/* roulang page: index */
:root {
            --penguin-black: #1A1D23;
            --polar-cyan: #D4F0F7;
            --aurora-orange: #FF6B35;
            --graphite-blue: #2C3E50;
            --snow-gray: #F5F7FA;
            --tundra-green: #2E8B6F;
            --glacier-red: #E74C3C;
            --text-primary: #1A1D23;
            --text-secondary: #2C3E50;
            --text-light: #6B7280;
            --border-color: #E5E7EB;
            --card-white: #FFFFFF;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --radius-badge: 50px;
            --radius-hero-img: 20px;
            --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
            --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
            --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition-base: 0.3s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0;
            color: var(--text-primary);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }

        a:hover {
            color: var(--aurora-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        /* ========== 顶部导航 ========== */
        .navbar-custom {
            background-color: var(--penguin-black);
            padding: 0;
            min-height: 64px;
            z-index: 1030;
            box-shadow: var(--shadow-nav);
        }

        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
        }

        .navbar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--penguin-black);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            transition: border-color var(--transition-base);
        }

        .navbar-brand:hover .logo-icon {
            border-color: var(--aurora-orange);
        }

        .navbar-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .navbar-custom .nav-link {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 500;
            padding: 22px 16px;
            transition: color var(--transition-base);
            position: relative;
            white-space: nowrap;
        }

        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--aurora-orange);
        }

        .navbar-custom .nav-link.active {
            color: var(--aurora-orange);
        }

        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--aurora-orange);
            border-radius: 2px;
        }

        .navbar-custom .navbar-toggler {
            border: 1px solid var(--polar-cyan);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }

        .navbar-custom .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            width: 24px;
            height: 24px;
        }

        .navbar-custom .navbar-toggler-icon::before {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
        }

        /* 进度步骤导航条 */
        .step-progress-bar {
            background-color: var(--graphite-blue);
            padding: 10px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--aurora-orange) transparent;
        }

        .step-progress-bar .steps-wrapper {
            display: flex;
            align-items: center;
            gap: 0;
            min-width: max-content;
            padding: 0 12px;
        }

        .step-progress-bar .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
        }

        .step-progress-bar .step-item:hover {
            background-color: rgba(255, 255, 255, 0.08);
        }

        .step-item .step-circle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-base);
        }

        .step-item.completed .step-circle {
            background-color: var(--tundra-green);
            color: #fff;
            border: 2px solid var(--tundra-green);
        }

        .step-item.current .step-circle {
            background-color: var(--aurora-orange);
            color: #fff;
            border: 2px solid var(--aurora-orange);
        }

        .step-item.pending .step-circle {
            background-color: transparent;
            color: #B0B8C4;
            border: 2px solid var(--polar-cyan);
        }

        .step-item .step-name {
            font-size: 13px;
            font-weight: 500;
            color: #B0B8C4;
            letter-spacing: 0;
        }

        .step-item.current .step-name {
            color: #fff;
            font-weight: 600;
        }

        .step-item.completed .step-name {
            color: var(--polar-cyan);
        }

        .step-connector {
            width: 24px;
            height: 2px;
            background-color: var(--polar-cyan);
            opacity: 0.5;
            border-radius: 2px;
            flex-shrink: 0;
            margin: 0 4px;
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background-color: var(--aurora-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0;
        }

        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: #E85A2A;
            color: #fff;
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
        }

        .btn-primary-custom:active {
            background-color: #D14E1F;
            box-shadow: none;
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-btn);
            padding: 11px 24px;
            font-size: 16px;
            font-weight: 500;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0;
        }

        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: rgba(212, 240, 247, 0.15);
            border-color: var(--aurora-orange);
            color: var(--aurora-orange);
            outline: none;
        }

        .btn-outline-custom.on-dark {
            color: var(--polar-cyan);
            border-color: var(--polar-cyan);
        }

        .btn-outline-custom.on-dark:hover {
            background-color: rgba(212, 240, 247, 0.1);
            border-color: var(--aurora-orange);
            color: var(--aurora-orange);
        }

        .text-link {
            color: var(--aurora-orange);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
        }

        .text-link:hover {
            color: #E85A2A;
            gap: 10px;
        }

        .text-link .arrow {
            transition: transform var(--transition-base);
        }

        .text-link:hover .arrow {
            transform: translateX(4px);
        }

        /* ========== 标签/徽章 ========== */
        .badge-cyan {
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        .badge-orange {
            background-color: var(--aurora-orange);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        .badge-green {
            background-color: var(--tundra-green);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        .badge-dark {
            background-color: var(--graphite-blue);
            color: var(--polar-cyan);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        /* ========== Hero ========== */
        .hero-video-section {
            position: relative;
            min-height: 88vh;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-video-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 29, 35, 0.75) 0%, rgba(26, 29, 35, 0.55) 50%, rgba(26, 29, 35, 0.85) 100%);
            z-index: 1;
        }

        .hero-video-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
            background-size: 32px 32px;
            z-index: 2;
            pointer-events: none;
        }

        .hero-video-content {
            position: relative;
            z-index: 3;
            text-align: center;
            width: 100%;
            padding: 80px 0;
        }

        .hero-play-btn {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-size: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-base);
            margin-bottom: 28px;
            position: relative;
            animation: pulse-ring 2s infinite;
        }

        .hero-play-btn:hover {
            background: var(--aurora-orange);
            border-color: var(--aurora-orange);
            transform: scale(1.05);
        }

        @keyframes pulse-ring {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.4);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(255, 107, 53, 0);
            }
        }

        .hero-video-content h1 {
            color: #fff;
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
        }

        .hero-video-content .hero-subtitle {
            color: var(--polar-cyan);
            font-size: 20px;
            line-height: 1.6;
            max-width: 720px;
            margin: 0 auto 28px;
            letter-spacing: 0;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
        }

        .hero-video-content .hero-cta-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-data-points {
            display: flex;
            gap: 40px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-data-points .hd-item {
            text-align: center;
        }

        .hd-item .hd-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            line-height: 1.2;
        }

        .hd-item .hd-label {
            font-size: 13px;
            color: #B0B8C4;
            margin-top: 4px;
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: 80px 0;
        }

        .section-block.bg-snow {
            background-color: var(--snow-gray);
        }

        .section-block.bg-dark {
            background-color: var(--graphite-blue);
        }

        .section-block.bg-black {
            background-color: var(--penguin-black);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 10px;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .section-block.bg-dark .section-header h2 {
            color: #fff;
        }

        .section-block.bg-dark .section-header .section-desc {
            color: #B0B8C4;
        }

        .section-block.bg-black .section-header h2 {
            color: #fff;
        }

        .section-block.bg-black .section-header .section-desc {
            color: #B0B8C4;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .metric-card:hover {
            border-color: rgba(255, 107, 53, 0.4);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }

        .metric-card .metric-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .metric-card .metric-number.cyan {
            color: var(--polar-cyan);
        }

        .metric-card .metric-name {
            font-size: 14px;
            color: #fff;
            font-weight: 500;
            margin-top: 8px;
            letter-spacing: 0;
        }

        .metric-card .metric-trend {
            font-size: 13px;
            font-weight: 600;
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .metric-trend.up {
            color: var(--tundra-green);
        }

        .metric-trend.down {
            color: var(--glacier-red);
        }

        /* ========== 服务矩阵 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-4px);
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
        }

        .service-card .service-img {
            width: 100%;
            aspect-ratio: 3 / 2;
            object-fit: cover;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .service-card .service-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card .service-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }

        .service-card .service-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .service-card.wide {
            grid-column: span 2;
        }

        .service-card.wide .service-img {
            aspect-ratio: 4 / 2;
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro-wrapper {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .brand-intro-text {
            flex: 5;
        }

        .brand-intro-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .brand-intro-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .brand-intro-img-wrapper {
            flex: 7;
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .brand-intro-img-wrapper img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        /* ========== 结果对比 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .compare-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px;
            box-shadow: var(--shadow-card-hover);
        }

        .compare-card.compare-left {
            border: 1px solid var(--tundra-green);
        }

        .compare-card.compare-right {
            border: 1px solid var(--border-color);
        }

        .compare-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }

        .compare-card.compare-left h3 {
            color: var(--tundra-green);
        }

        .compare-card .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-bottom: 1px solid #F3F4F6;
        }

        .compare-list li:last-child {
            border-bottom: none;
        }

        .compare-list li .compare-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            margin-top: 3px;
        }

        .compare-icon.icon-check {
            background-color: var(--tundra-green);
            color: #fff;
        }

        .compare-icon.icon-x {
            background-color: var(--glacier-red);
            color: #fff;
        }

        /* ========== 优惠阶梯 ========== */
        .ladder-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .ladder-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .ladder-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .ladder-card.featured {
            border-color: var(--aurora-orange);
            border-width: 2px;
        }

        .ladder-card .ladder-badge {
            display: inline-block;
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .ladder-card.featured .ladder-badge {
            background-color: var(--aurora-orange);
            color: #fff;
        }

        .ladder-card .ladder-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
        }

        .ladder-card .ladder-price {
            font-size: 28px;
            font-weight: 700;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            margin-bottom: 4px;
        }

        .ladder-card .ladder-limit {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 14px;
        }

        .ladder-card .ladder-perks {
            list-style: none;
            padding: 0;
            margin: 0 0 18px;
            text-align: left;
        }

        .ladder-perks li {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 5px 0;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }

        .ladder-perks li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--aurora-orange);
            flex-shrink: 0;
        }

        /* ========== 嘉宾亮点 ========== */
        .guest-scroll-wrapper {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--aurora-orange) transparent;
            padding-bottom: 16px;
            scroll-snap-type: x mandatory;
        }

        .guest-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .guest-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .guest-card img {
            width: 100%;
            aspect-ratio: 3 / 2;
            object-fit: cover;
        }

        .guest-card .guest-body {
            padding: 16px 20px;
        }

        .guest-card .guest-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
        }

        .guest-card .guest-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        /* ========== 新闻中心 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0 48px;
        }

        .news-item {
            padding: 20px 16px;
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-base);
            position: relative;
            border-left: 3px solid transparent;
        }

        .news-item:hover {
            border-left-color: var(--aurora-orange);
            background-color: rgba(255, 107, 53, 0.03);
        }

        .news-item .news-date {
            font-size: 13px;
            color: #9CA3AF;
            margin-bottom: 6px;
            letter-spacing: 0;
        }

        .news-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
            line-height: 1.4;
        }

        .news-item .news-summary {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        /* ========== 媒体精选 ========== */
        .media-scroll-wrapper {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--aurora-orange) transparent;
            padding-bottom: 16px;
            scroll-snap-type: x mandatory;
        }

        .media-card {
            flex: 0 0 320px;
            scroll-snap-align: start;
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .media-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .media-card img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }

        .media-card .media-body {
            padding: 16px 20px;
        }

        .media-card .media-body h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
            line-height: 1.4;
        }

        .media-card .media-body .media-type {
            font-size: 12px;
            color: var(--aurora-orange);
            font-weight: 600;
            display: inline-block;
            margin-bottom: 4px;
        }

        /* ========== 深度内容区 ========== */
        .deep-content-area {
            max-width: 820px;
            margin: 0 auto;
        }

        .deep-content-area h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .deep-content-area h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 24px;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .deep-content-area p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
            letter-spacing: 0;
        }

        /* ========== 三步上手 ========== */
        .steps-horizontal {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .step-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
            font-feature-settings: "tnum";
        }

        .step-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 用户口碑 ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .testimonial-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
        }

        .testimonial-card .testimonial-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }

        .testimonial-card .testimonial-author {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .testimonial-author .avatar-placeholder {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--graphite-blue);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
            background: var(--card-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .faq-wrapper .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background: transparent;
        }

        .faq-wrapper .accordion-item:last-child {
            border-bottom: none;
        }

        .faq-wrapper .accordion-button {
            background: var(--card-white);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            letter-spacing: -0.3px;
        }

        .faq-wrapper .accordion-button:not(.collapsed) {
            background-color: rgba(212, 240, 247, 0.4);
            color: var(--aurora-orange);
            box-shadow: none;
        }

        .faq-wrapper .accordion-button::after {
            content: '\2b';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            color: var(--aurora-orange);
            font-size: 14px;
            transition: transform var(--transition-base);
        }

        .faq-wrapper .accordion-button:not(.collapsed)::after {
            content: '\f068';
            font-weight: 900;
            transform: rotate(0deg);
        }

        .faq-wrapper .accordion-body {
            padding: 4px 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== 转化表单 ========== */
        .form-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 36px;
            box-shadow: var(--shadow-form);
            max-width: 680px;
            margin: 0 auto;
        }

        .form-card .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--graphite-blue);
            margin-bottom: 6px;
        }

        .form-card .form-control {
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 14px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all var(--transition-base);
            min-height: 44px;
        }

        .form-card .form-control:focus {
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
            outline: none;
        }

        .form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }

        .form-card .btn-submit {
            width: 100%;
            background-color: var(--aurora-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px;
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition-base);
            letter-spacing: 0;
        }

        .form-card .btn-submit:hover {
            background-color: #E85A2A;
        }

        .form-card .btn-submit:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
        }

        .trust-indicators {
            display: flex;
            gap: 24px;
            justify-content: center;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .trust-indicators .ti-item {
            color: #B0B8C4;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .trust-indicators .ti-item i {
            color: var(--tundra-green);
            font-size: 14px;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background-color: var(--graphite-blue);
            padding: 48px 0 24px;
            color: #B0B8C4;
        }

        .footer-custom .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .footer-brand .brand-text {
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.3px;
        }

        .footer-custom .footer-desc {
            font-size: 14px;
            color: #B0B8C4;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-custom .footer-heading {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0;
        }

        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links li a {
            color: var(--polar-cyan);
            font-size: 14px;
            transition: color var(--transition-base);
        }

        .footer-links li a:hover {
            color: var(--aurora-orange);
        }

        .footer-custom .footer-contact {
            font-size: 14px;
            color: #B0B8C4;
            line-height: 1.8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 32px;
            font-size: 13px;
            color: #8B94A3;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .footer-bottom a {
            color: var(--polar-cyan);
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--aurora-orange);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199.98px) {
            .service-grid {
                gap: 20px;
            }
            .metrics-grid {
                gap: 16px;
            }
        }

        @media (max-width: 991.98px) {
            .hero-video-content h1 {
                font-size: 34px;
            }
            .hero-video-content .hero-subtitle {
                font-size: 18px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-card.wide {
                grid-column: span 2;
            }
            .brand-intro-wrapper {
                flex-direction: column;
                gap: 28px;
            }
            .brand-intro-text,
            .brand-intro-img-wrapper {
                flex: none;
                width: 100%;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .ladder-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .steps-horizontal {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .form-card {
                padding: 28px;
            }
            .section-block {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-video-section {
                min-height: 72vh;
            }
            .hero-video-content h1 {
                font-size: 28px;
            }
            .hero-video-content .hero-subtitle {
                font-size: 16px;
                max-width: 100%;
            }
            .hero-play-btn {
                width: 64px;
                height: 64px;
                font-size: 24px;
                margin-bottom: 20px;
            }
            .hero-data-points {
                gap: 20px;
            }
            .hd-item .hd-number {
                font-size: 22px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card.wide {
                grid-column: span 1;
            }
            .service-card .service-img {
                aspect-ratio: 2 / 1;
            }
            .service-card.wide .service-img {
                aspect-ratio: 2 / 1;
            }
            .compare-card {
                padding: 20px;
            }
            .form-card {
                padding: 20px;
            }
            .trust-indicators {
                gap: 14px;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .section-header .section-desc {
                font-size: 14px;
            }
            .guest-card {
                flex: 0 0 240px;
            }
            .media-card {
                flex: 0 0 280px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .step-progress-bar .step-name {
                font-size: 11px;
            }
            .step-connector {
                width: 12px;
            }
            .navbar-custom .nav-link {
                padding: 12px 16px;
                font-size: 14px;
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            body {
                font-size: 15px;
            }
            .hero-video-content h1 {
                font-size: 24px;
                letter-spacing: -0.5px;
            }
            .hero-video-content .hero-subtitle {
                font-size: 15px;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                padding: 10px 20px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero-video-content .hero-cta-group {
                flex-direction: column;
                gap: 12px;
                width: 100%;
                max-width: 300px;
                margin-left: auto;
                margin-right: auto;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .metric-card .metric-number {
                font-size: 28px;
            }
            .ladder-card {
                padding: 20px 16px;
            }
            .faq-wrapper .accordion-button {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-wrapper .accordion-body {
                padding: 4px 16px 14px;
                font-size: 14px;
            }
            .deep-content-area h3 {
                font-size: 20px;
            }
            .deep-content-area p {
                font-size: 15px;
            }
        }

/* roulang page: category3 */
:root {
            --penguin-black: #1A1D23;
            --polar-cyan: #D4F0F7;
            --aurora-orange: #FF6B35;
            --graphite-blue: #2C3E50;
            --snow-gray: #F5F7FA;
            --tundra-green: #2E8B6F;
            --glacier-red: #E74C3C;
            --text-primary: #1A1D23;
            --text-secondary: #2C3E50;
            --text-light: #6B7280;
            --border-color: #E5E7EB;
            --card-white: #FFFFFF;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --radius-badge: 50px;
            --radius-hero-img: 20px;
            --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
            --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
            --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition-base: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0;
            color: var(--text-primary);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--aurora-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 顶部导航 ========== */
        .navbar-custom {
            background-color: var(--penguin-black);
            padding: 0;
            min-height: 64px;
            z-index: 1030;
            box-shadow: var(--shadow-nav);
        }
        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
        }
        .navbar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--penguin-black);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            transition: border-color var(--transition-base);
        }
        .navbar-brand:hover .logo-icon {
            border-color: var(--aurora-orange);
        }
        .navbar-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .navbar-custom .nav-link {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 500;
            padding: 22px 16px;
            transition: color var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--aurora-orange);
            border-radius: 2px;
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid var(--polar-cyan);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }
        .navbar-custom .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            width: 24px;
            height: 24px;
        }
        .navbar-custom .navbar-toggler-icon::before {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
        }

        /* ========== 进度步骤导航 ========== */
        .step-progress-bar {
            background-color: var(--graphite-blue);
            min-height: 48px;
            display: flex;
            align-items: center;
            overflow-x: auto;
            overflow-y: hidden;
            z-index: 1029;
            position: relative;
            scrollbar-width: thin;
            scrollbar-color: rgba(212,240,247,0.3) transparent;
        }
        .step-progress-bar::-webkit-scrollbar {
            height: 4px;
        }
        .step-progress-bar::-webkit-scrollbar-thumb {
            background-color: rgba(212,240,247,0.3);
            border-radius: 4px;
        }
        .step-progress-bar .steps-wrapper {
            display: flex;
            align-items: center;
            gap: 0;
            min-width: max-content;
            padding: 0 12px;
        }
        .step-progress-bar .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
        }
        .step-progress-bar .step-item:hover {
            background-color: rgba(255, 255, 255, 0.08);
        }
        .step-item .step-circle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-base);
            font-feature-settings: "tnum";
        }
        .step-item.completed .step-circle {
            background-color: var(--tundra-green);
            color: #fff;
            border: 2px solid var(--tundra-green);
        }
        .step-item.current .step-circle {
            background-color: var(--aurora-orange);
            color: #fff;
            border: 2px solid var(--aurora-orange);
        }
        .step-item.pending .step-circle {
            background-color: transparent;
            color: #B0B8C4;
            border: 2px solid var(--polar-cyan);
        }
        .step-item .step-name {
            font-size: 13px;
            color: #D1D5DB;
            font-weight: 500;
            letter-spacing: 0.2px;
        }
        .step-item.current .step-name {
            color: #FFFFFF;
            font-weight: 600;
        }
        .step-item.completed .step-name {
            color: #A7F3D0;
        }
        .step-connector {
            width: 24px;
            height: 2px;
            background-color: var(--polar-cyan);
            opacity: 0.4;
            flex-shrink: 0;
            margin: 0 4px;
            border-radius: 2px;
        }
        @media (max-width: 575.98px) {
            .step-item .step-name {
                font-size: 12px;
                max-width: 70px;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .step-connector {
                width: 14px;
            }
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background-color: var(--aurora-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: #E85A2A;
            color: #fff;
            box-shadow: 0 0 0 3px rgba(255,107,53,0.2);
        }
        .btn-primary-custom:active {
            background-color: #D14E1F;
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: rgba(212,240,247,0.2);
            color: var(--graphite-blue);
            border-color: var(--aurora-orange);
        }
        .text-link-custom {
            color: var(--aurora-orange);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
            background: none;
            border: none;
            padding: 0;
        }
        .text-link-custom i {
            transition: transform var(--transition-base);
        }
        .text-link-custom:hover {
            color: #E85A2A;
        }
        .text-link-custom:hover i {
            transform: translateX(4px);
        }

        /* ========== 卡片 ========== */
        .card-custom {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card-custom:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .card-custom .card-img-top {
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            aspect-ratio: 3 / 2;
            object-fit: cover;
            width: 100%;
        }
        .card-custom .card-body {
            padding: 24px;
        }
        .card-custom .card-title {
            font-weight: 700;
            font-size: 18px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            margin-bottom: 8px;
        }

        /* ========== 徽章/标签 ========== */
        .badge-custom {
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background-color: var(--aurora-orange);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            letter-spacing: 0.3px;
        }
        .badge-success {
            background-color: var(--tundra-green);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            letter-spacing: 0.3px;
        }

        /* ========== 分区通用 ========== */
        .section-padding {
            padding: 80px 0;
        }
        .section-heading {
            margin-bottom: 40px;
        }
        .section-heading .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .section-heading .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
            max-width: 680px;
        }
        .bg-snow {
            background-color: var(--snow-gray);
        }
        .bg-dark-custom {
            background-color: var(--penguin-black);
        }
        .bg-graphite {
            background-color: var(--graphite-blue);
        }

        /* ========== Hero ========== */
        .hero-inner {
            background-color: var(--penguin-black);
            background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                              radial-gradient(rgba(212,240,247,0.05) 1px, transparent 1px);
            background-size: 28px 28px, 56px 56px;
            padding: 72px 0 64px;
            min-height: 55vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .hero-inner .hero-title {
            color: #fff;
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .hero-inner .hero-subtitle {
            color: var(--polar-cyan);
            font-size: 18px;
            line-height: 1.7;
            font-weight: 400;
            margin-bottom: 24px;
            max-width: 560px;
        }
        .hero-inner .hero-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .hero-inner .hero-badges .hero-badge-item {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(212,240,247,0.25);
            border-radius: var(--radius-card);
            padding: 12px 18px;
            color: #fff;
            display: flex;
            flex-direction: column;
            align-items: center;
            min-width: 110px;
        }
        .hero-badge-item .badge-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            letter-spacing: -0.5px;
        }
        .hero-badge-item .badge-label {
            font-size: 12px;
            color: #B0B8C4;
            margin-top: 2px;
        }
        .hero-inner .hero-image-wrapper {
            border-radius: var(--radius-hero-img);
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0,0,0,0.35);
        }
        .hero-inner .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-hero-img);
            aspect-ratio: 16 / 10;
        }

        /* ========== 评测榜单 ========== */
        .rank-list .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-bottom: 12px;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .rank-list .rank-item:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
        }
        .rank-item .rank-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            font-feature-settings: "tnum";
        }
        .rank-number.top1 {
            background-color: var(--aurora-orange);
            color: #fff;
        }
        .rank-number.top2 {
            background-color: var(--graphite-blue);
            color: #fff;
        }
        .rank-number.top3 {
            background-color: var(--tundra-green);
            color: #fff;
        }
        .rank-number.normal-rank {
            background-color: var(--snow-gray);
            color: var(--text-light);
        }
        .rank-item .rank-info {
            flex-grow: 1;
        }
        .rank-item .rank-name {
            font-weight: 700;
            font-size: 16px;
            color: var(--text-primary);
            margin-bottom: 2px;
        }
        .rank-item .rank-meta {
            font-size: 13px;
            color: var(--text-light);
        }
        .rank-item .rank-score {
            flex-shrink: 0;
            text-align: right;
        }
        .rank-score .score-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            letter-spacing: -0.5px;
        }
        .rank-score .score-label {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ========== 评测方法论 ========== */
        .methodology-block {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-large);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
        }
        .methodology-block .method-step {
            display: flex;
            gap: 16px;
            margin-bottom: 20px;
            align-items: flex-start;
        }
        .method-step .step-indicator {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--polar-cyan);
            color: var(--graphite-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .method-step .step-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .method-step .step-content p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== 数据指标 ========== */
        .metric-card {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(212,240,247,0.15);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,107,53,0.4);
        }
        .metric-card .metric-number {
            font-size: 34px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            letter-spacing: -0.5px;
        }
        .metric-card .metric-label {
            font-size: 14px;
            color: #D1D5DB;
            margin-top: 4px;
        }
        .metric-card .metric-trend {
            font-size: 12px;
            font-weight: 600;
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .trend-up {
            color: var(--tundra-green);
        }
        .trend-down {
            color: var(--glacier-red);
        }

        /* ========== 对比区 ========== */
        .compare-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px 28px;
            box-shadow: var(--shadow-card-hover);
            height: 100%;
        }
        .compare-card.compare-positive {
            border: 1px solid var(--tundra-green);
        }
        .compare-card.compare-negative {
            border: 1px solid var(--border-color);
        }
        .compare-card .compare-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
        }
        .compare-card.compare-positive .compare-title {
            color: var(--tundra-green);
        }
        .compare-card.compare-negative .compare-title {
            color: var(--text-light);
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-list li {
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .compare-list li .check-icon {
            color: var(--tundra-green);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .compare-list li .cross-icon {
            color: var(--glacier-red);
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ========== 选购指南深度内容 ========== */
        .guide-content {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-large);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 2.0;
        }
        .guide-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 24px;
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .guide-content h3:first-child {
            margin-top: 0;
        }
        .guide-content p {
            margin-bottom: 16px;
        }
        .guide-content .highlight-box {
            background: var(--snow-gray);
            border-left: 4px solid var(--aurora-orange);
            border-radius: var(--radius-btn);
            padding: 16px 20px;
            margin: 16px 0;
            font-weight: 500;
            color: var(--text-primary);
        }

        /* ========== FAQ ========== */
        .accordion-custom {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background: transparent;
        }
        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-custom .accordion-button {
            background: #fff;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 20px;
            box-shadow: none;
            border: none;
            transition: all var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(212,240,247,0.25);
            color: var(--aurora-orange);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255,107,53,0.15);
            border: none;
        }
        .accordion-custom .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            color: var(--aurora-orange);
            font-size: 14px;
            transition: transform var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '\f068';
            transform: rotate(0deg);
        }
        .accordion-custom .accordion-body {
            padding: 16px 20px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            background: #fff;
        }

        /* ========== 转化表单 ========== */
        .form-section {
            background-color: var(--penguin-black);
            background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 30px 30px;
        }
        .form-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 36px 32px;
            box-shadow: var(--shadow-form);
        }
        .form-card .form-label {
            color: var(--graphite-blue);
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 6px;
        }
        .form-card .form-control {
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 12px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all var(--transition-base);
            background: #fff;
        }
        .form-card .form-control:focus {
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255,107,53,0.15);
            outline: none;
        }
        .form-card .form-select {
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 12px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all var(--transition-base);
            background-color: #fff;
        }
        .form-card .form-select:focus {
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255,107,53,0.15);
        }
        .form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .trust-badges {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .trust-badge-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #D1D5DB;
            font-size: 13px;
        }
        .trust-badge-item i {
            color: var(--tundra-green);
            font-size: 16px;
        }

        /* ========== 用户评价 ========== */
        .review-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: all var(--transition-base);
        }
        .review-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--polar-cyan);
        }
        .review-card .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .review-card .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--graphite-blue);
            flex-shrink: 0;
        }
        .review-card .review-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-primary);
        }
        .review-card .review-meta {
            font-size: 12px;
            color: var(--text-light);
        }
        .review-card .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .review-stars {
            color: var(--aurora-orange);
            font-size: 13px;
            letter-spacing: 1px;
        }
        .rating-summary {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .rating-overall {
            text-align: center;
            padding: 16px 24px;
            background: var(--card-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
        }
        .rating-overall .rating-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            letter-spacing: -1px;
        }
        .rating-overall .rating-total {
            font-size: 13px;
            color: var(--text-light);
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background-color: var(--graphite-blue);
            color: #D1D5DB;
            padding: 48px 0 24px;
        }
        .footer-custom .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 16px;
            font-weight: 800;
        }
        .footer-brand .brand-text {
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }
        .footer-custom .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #B0B8C4;
            max-width: 340px;
        }
        .footer-custom .footer-heading {
            font-size: 14px;
            font-weight: 700;
            color: var(--polar-cyan);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom .footer-links li {
            margin-bottom: 8px;
        }
        .footer-custom .footer-links a {
            color: #D1D5DB;
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-custom .footer-links a:hover {
            color: var(--aurora-orange);
        }
        .footer-custom .footer-contact {
            font-size: 14px;
            color: #B0B8C4;
            line-height: 1.8;
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(212,240,247,0.15);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #9CA3AF;
        }
        .footer-custom .footer-bottom a {
            color: var(--polar-cyan);
            transition: color var(--transition-base);
        }
        .footer-custom .footer-bottom a:hover {
            color: var(--aurora-orange);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .hero-inner .hero-title {
                font-size: 32px;
            }
            .hero-inner .hero-subtitle {
                font-size: 16px;
            }
            .section-padding {
                padding: 60px 0;
            }
        }
        @media (max-width: 767.98px) {
            .navbar-custom .nav-link {
                padding: 12px 0;
                font-size: 15px;
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .hero-inner {
                padding: 48px 0 40px;
                min-height: auto;
            }
            .hero-inner .hero-title {
                font-size: 28px;
            }
            .hero-inner .hero-subtitle {
                font-size: 15px;
            }
            .section-heading .section-title {
                font-size: 24px;
            }
            .compare-card {
                padding: 24px 20px;
                margin-bottom: 16px;
            }
            .guide-content {
                padding: 24px 20px;
                font-size: 14px;
            }
            .form-card {
                padding: 24px 20px;
            }
            .methodology-block {
                padding: 24px 20px;
            }
            .metric-card .metric-number {
                font-size: 28px;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-inner .hero-badges {
                gap: 8px;
            }
            .hero-inner .hero-badges .hero-badge-item {
                min-width: 90px;
                padding: 10px 12px;
            }
            .hero-badge-item .badge-number {
                font-size: 22px;
            }
            .rank-list .rank-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .rank-score .score-num {
                font-size: 20px;
            }
            .rating-overall .rating-number {
                font-size: 32px;
            }
            .section-padding {
                padding: 48px 0;
            }
        }

/* roulang page: category2 */
:root {
    --penguin-black: #1A1D23;
    --polar-cyan: #D4F0F7;
    --aurora-orange: #FF6B35;
    --graphite-blue: #2C3E50;
    --snow-gray: #F5F7FA;
    --tundra-green: #2E8B6F;
    --glacier-red: #E74C3C;
    --text-primary: #1A1D23;
    --text-secondary: #2C3E50;
    --text-light: #6B7280;
    --border-color: #E5E7EB;
    --card-white: #FFFFFF;
    --radius-card: 12px;
    --radius-large: 16px;
    --radius-btn: 8px;
    --radius-badge: 50px;
    --radius-hero-img: 20px;
    --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
    --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
    --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
    --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
    --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    --transition-base: 0.3s ease;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-stack);
    font-size: 16px;
    line-height: 1.8;
    letter-spacing: 0;
    color: var(--text-primary);
    background-color: #FFFFFF;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}
a:hover {
    color: var(--aurora-orange);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button,
input,
select,
textarea {
    font-family: inherit;
}
.container {
    max-width: 1200px;
}
/* ========== 导航 ========== */
.navbar-custom {
    background-color: var(--penguin-black);
    padding: 0;
    min-height: 64px;
    z-index: 1030;
    box-shadow: var(--shadow-nav);
}
.navbar-custom .navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
}
.navbar-brand .logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--penguin-black);
    border: 2px solid var(--polar-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--polar-cyan);
    font-size: 20px;
    font-weight: 800;
    flex-shrink: 0;
    transition: border-color var(--transition-base);
}
.navbar-brand:hover .logo-icon {
    border-color: var(--aurora-orange);
}
.navbar-brand .brand-text {
    color: #FFFFFF;
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.5px;
    white-space: nowrap;
}
.navbar-custom .nav-link {
    color: #FFFFFF;
    font-size: 15px;
    font-weight: 500;
    padding: 22px 16px;
    transition: color var(--transition-base);
    position: relative;
    white-space: nowrap;
}
.navbar-custom .nav-link:hover,
.navbar-custom .nav-link:focus {
    color: var(--aurora-orange);
}
.navbar-custom .nav-link.active {
    color: var(--aurora-orange);
}
.navbar-custom .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 16px;
    right: 16px;
    height: 2px;
    background-color: var(--aurora-orange);
    border-radius: 2px;
}
.navbar-custom .navbar-toggler {
    border: 1px solid var(--polar-cyan);
    padding: 8px 10px;
    border-radius: var(--radius-btn);
}
.navbar-custom .navbar-toggler-icon {
    background-image: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--polar-cyan);
    font-size: 20px;
    width: 24px;
    height: 24px;
}
.navbar-custom .navbar-toggler-icon::before {
    content: '\f0c9';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}
/* 进度步骤条 */
.step-progress-bar {
    background-color: var(--graphite-blue);
    min-height: 48px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(212, 240, 247, 0.15);
}
.step-progress-bar .container {
    overflow-x: auto;
    scrollbar-width: none;
}
.step-progress-bar .container::-webkit-scrollbar {
    display: none;
}
.step-progress-bar .steps-wrapper {
    display: flex;
    align-items: center;
    gap: 0;
    min-width: max-content;
    padding: 0 8px;
}
.step-progress-bar .step-item {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius-btn);
    transition: background-color var(--transition-base);
}
.step-progress-bar .step-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
}
.step-item .step-circle {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
    transition: all var(--transition-base);
}
.step-item.completed .step-circle {
    background-color: var(--tundra-green);
    color: #fff;
    border: 2px solid var(--tundra-green);
}
.step-item.current .step-circle {
    background-color: var(--aurora-orange);
    color: #fff;
    border: 2px solid var(--aurora-orange);
}
.step-item.pending .step-circle {
    background-color: transparent;
    color: #B0B8C4;
    border: 2px solid var(--polar-cyan);
}
.step-item .step-name {
    color: #E5E7EB;
    font-size: 13px;
    font-weight: 500;
}
.step-item.current .step-name {
    color: #FFFFFF;
    font-weight: 700;
}
.step-connector {
    width: 24px;
    height: 2px;
    background-color: var(--polar-cyan);
    opacity: 0.4;
    border-radius: 2px;
    flex-shrink: 0;
}
/* ========== 按钮 ========== */
.btn-primary-custom {
    background-color: var(--aurora-orange);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-btn);
    padding: 10px 20px;
    font-weight: 600;
    font-size: 15px;
    transition: background-color var(--transition-base), transform var(--transition-base);
    display: inline-block;
    cursor: pointer;
}
.btn-primary-custom:hover,
.btn-primary-custom:focus {
    background-color: #E85A2A;
    color: #FFFFFF;
    transform: translateY(-1px);
}
.btn-primary-custom:active {
    background-color: #D14E1F;
    transform: translateY(0);
}
.btn-outline-custom {
    background-color: transparent;
    border: 1px solid var(--polar-cyan);
    color: var(--polar-cyan);
    border-radius: var(--radius-btn);
    padding: 10px 20px;
    font-weight: 600;
    font-size: 15px;
    transition: background-color var(--transition-base), color var(--transition-base);
    display: inline-block;
}
.btn-outline-custom:hover,
.btn-outline-custom:focus {
    background-color: rgba(212, 240, 247, 0.1);
    color: #FFFFFF;
    border-color: var(--aurora-orange);
}
.btn-outline-dark-custom {
    background-color: transparent;
    border: 1px solid var(--graphite-blue);
    color: var(--graphite-blue);
    border-radius: var(--radius-btn);
    padding: 10px 20px;
    font-weight: 600;
    font-size: 15px;
    transition: background-color var(--transition-base), color var(--transition-base);
    display: inline-block;
}
.btn-outline-dark-custom:hover,
.btn-outline-dark-custom:focus {
    background-color: var(--snow-gray);
    color: var(--aurora-orange);
    border-color: var(--aurora-orange);
}
.text-link {
    color: var(--aurora-orange);
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition-base);
}
.text-link:hover {
    gap: 10px;
    color: #E85A2A;
}
/* ========== 通用板块 ========== */
.section-block {
    padding: 80px 0;
}
.section-block-sm {
    padding: 50px 0;
}
.section-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.section-subtitle {
    font-size: 17px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 720px;
}
/* ========== 卡片 ========== */
.card-custom {
    background: var(--card-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 24px;
    transition: all var(--transition-base);
    height: 100%;
}
.card-custom:hover {
    border-color: var(--aurora-orange);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}
.card-custom .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background-color: var(--polar-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--graphite-blue);
    margin-bottom: 16px;
}
.card-custom h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}
.card-custom p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 0;
}
/* ========== 徽章 ========== */
.badge-custom {
    background-color: var(--polar-cyan);
    color: var(--graphite-blue);
    border-radius: var(--radius-badge);
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}
.badge-accent {
    background-color: var(--aurora-orange);
    color: #FFFFFF;
    border-radius: var(--radius-badge);
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}
.badge-success {
    background-color: var(--tundra-green);
    color: #FFFFFF;
    border-radius: var(--radius-badge);
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}
.badge-dark {
    background-color: var(--graphite-blue);
    color: var(--polar-cyan);
    border-radius: var(--radius-badge);
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}
/* ========== 列表 ========== */
.list-check {
    list-style: none;
    padding: 0;
    margin: 0;
}
.list-check li {
    padding-left: 32px;
    position: relative;
    margin-bottom: 12px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}
.list-check li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--tundra-green);
    font-size: 16px;
}
.list-cross {
    list-style: none;
    padding: 0;
    margin: 0;
}
.list-cross li {
    padding-left: 32px;
    position: relative;
    margin-bottom: 12px;
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}
.list-cross li::before {
    content: '\f00d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--glacier-red);
    font-size: 16px;
}
/* ========== 深色区块 ========== */
.section-dark {
    background-color: var(--graphite-blue);
    color: #FFFFFF;
}
.section-dark .section-title {
    color: #FFFFFF;
}
.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}
.section-black {
    background-color: var(--penguin-black);
    color: #FFFFFF;
}
.section-black .section-title {
    color: #FFFFFF;
}
.section-black .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}
.section-light {
    background-color: var(--snow-gray);
}
.section-cyan-light {
    background-color: rgba(212, 240, 247, 0.3);
}
/* ========== 表单 ========== */
.form-control-custom {
    display: block;
    width: 100%;
    padding: 10px 12px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: #FFFFFF;
    border: 1px solid #D1D5DB;
    border-radius: var(--radius-btn);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.form-control-custom:focus {
    border-color: var(--aurora-orange);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
    outline: none;
}
.form-label-custom {
    font-size: 14px;
    font-weight: 700;
    color: var(--graphite-blue);
    margin-bottom: 6px;
    display: block;
}
textarea.form-control-custom {
    min-height: 120px;
    resize: vertical;
}
select.form-control-custom {
    appearance: auto;
}
/* ========== FAQ ========== */
.accordion-custom .accordion-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card) !important;
    margin-bottom: 12px;
    overflow: hidden;
    background-color: #FFFFFF;
}
.accordion-custom .accordion-button {
    background-color: #FFFFFF;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 16px;
    padding: 18px 20px;
    border: none;
    box-shadow: none;
    line-height: 1.5;
}
.accordion-custom .accordion-button:not(.collapsed) {
    background-color: rgba(212, 240, 247, 0.3);
    color: var(--aurora-orange);
    box-shadow: none;
}
.accordion-custom .accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.12);
    border-color: transparent;
}
.accordion-custom .accordion-button::after {
    filter: none;
    background-image: none;
    content: '\f067';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--aurora-orange);
    font-size: 14px;
    width: auto;
    height: auto;
    transition: transform var(--transition-base);
}
.accordion-custom .accordion-button:not(.collapsed)::after {
    content: '\f068';
    transform: rotate(0deg);
}
.accordion-custom .accordion-body {
    padding: 0 20px 18px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}
/* ========== 页脚 ========== */
.footer-custom {
    background-color: var(--graphite-blue);
    color: #FFFFFF;
    padding: 50px 0 0;
}
.footer-custom .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.footer-custom .footer-brand .logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--graphite-blue);
    border: 2px solid var(--polar-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--polar-cyan);
    font-size: 18px;
    flex-shrink: 0;
}
.footer-custom .footer-brand .brand-text {
    color: #FFFFFF;
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.5px;
}
.footer-custom .footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.75;
    margin-bottom: 20px;
}
.footer-custom .footer-heading {
    color: #FFFFFF;
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 16px;
}
.footer-custom .footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-custom .footer-links li {
    margin-bottom: 8px;
}
.footer-custom .footer-links a {
    color: var(--polar-cyan);
    font-size: 14px;
    transition: color var(--transition-base);
}
.footer-custom .footer-links a:hover {
    color: var(--aurora-orange);
}
.footer-custom .footer-contact {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.75;
}
.footer-custom .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 32px;
    padding: 16px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    align-items: center;
}
.footer-custom .footer-bottom a {
    color: var(--polar-cyan);
    transition: color var(--transition-base);
}
.footer-custom .footer-bottom a:hover {
    color: var(--aurora-orange);
}
/* ========== 指标卡（深色） ========== */
.metric-card-dark {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(212, 240, 247, 0.15);
    border-radius: var(--radius-card);
    padding: 24px;
    text-align: center;
    height: 100%;
    transition: border-color var(--transition-base), transform var(--transition-base);
}
.metric-card-dark:hover {
    border-color: rgba(255, 107, 53, 0.5);
    transform: translateY(-2px);
}
.metric-card-dark .metric-number {
    font-size: 36px;
    font-weight: 700;
    font-feature-settings: "tnum";
    color: var(--aurora-orange);
    line-height: 1.2;
    margin-bottom: 8px;
}
.metric-card-dark .metric-name {
    font-size: 14px;
    color: #FFFFFF;
    font-weight: 500;
    margin-bottom: 6px;
}
.metric-card-dark .metric-trend {
    font-size: 13px;
    font-weight: 600;
}
.metric-card-dark .metric-trend.up {
    color: var(--tundra-green);
}
.metric-card-dark .metric-trend.down {
    color: var(--glacier-red);
}
/* ========== Hero ========== */
.hero-category {
    background-color: var(--penguin-black);
    padding: 60px 0 70px;
    position: relative;
    overflow: hidden;
    min-height: 55vh;
    display: flex;
    align-items: center;
}
.hero-category::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
}
.hero-category .hero-content {
    position: relative;
    z-index: 2;
}
.hero-category h1 {
    color: #FFFFFF;
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.35;
    margin-bottom: 16px;
}
.hero-category .hero-subtitle {
    color: var(--polar-cyan);
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 540px;
}
.hero-category .hero-img-wrap {
    position: relative;
    z-index: 2;
    border-radius: var(--radius-hero-img);
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}
.hero-category .hero-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 16/10;
}
/* ========== 流程步骤 ========== */
.flow-item {
    text-align: center;
    padding: 24px 16px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    height: 100%;
    transition: all var(--transition-base);
}
.flow-item:hover {
    border-color: var(--aurora-orange);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}
.flow-item .flow-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--polar-cyan);
    color: var(--graphite-blue);
    font-weight: 700;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}
.flow-item h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}
.flow-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 0;
}
/* ========== 对比卡 ========== */
.compare-card {
    background: #FFFFFF;
    border-radius: var(--radius-large);
    padding: 28px;
    height: 100%;
    box-shadow: var(--shadow-form);
}
.compare-card.compare-green {
    border: 1px solid var(--tundra-green);
}
.compare-card.compare-gray {
    border: 1px solid var(--border-color);
}
.compare-card .compare-heading {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.compare-card .compare-heading .icon-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}
.compare-card .compare-heading .icon-circle.green {
    background-color: var(--tundra-green);
    color: #FFFFFF;
}
.compare-card .compare-heading .icon-circle.gray {
    background-color: #E5E7EB;
    color: var(--text-light);
}
/* ========== 深度阅读区 ========== */
.deep-read {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-large);
    padding: 32px;
    box-shadow: var(--shadow-card);
}
.deep-read h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.deep-read p {
    font-size: 15px;
    line-height: 1.85;
    color: var(--text-secondary);
    margin-bottom: 16px;
}
.deep-read .highlight-stat {
    background-color: var(--snow-gray);
    border-left: 3px solid var(--aurora-orange);
    padding: 16px 20px;
    border-radius: 0 8px 8px 0;
    margin: 16px 0;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}
/* ========== 案例卡 ========== */
.case-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-card);
    height: 100%;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--aurora-orange);
    border-radius: var(--radius-card) var(--radius-card) 0 0;
}
.case-card:hover {
    border-color: var(--aurora-orange);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}
.case-card .case-tag {
    margin-bottom: 12px;
}
.case-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.case-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 0;
}
/* ========== 响应式 ========== */
@media (max-width: 991.98px) {
    .navbar-custom .nav-link {
        padding: 12px 20px;
        font-size: 14px;
    }
    .navbar-custom .nav-link.active::after {
        display: none;
    }
    .navbar-custom .nav-link.active {
        background-color: rgba(255, 107, 53, 0.12);
        border-radius: var(--radius-btn);
    }
    .hero-category {
        min-height: auto;
        padding: 40px 0 50px;
    }
    .hero-category h1 {
        font-size: 28px;
    }
    .hero-category .hero-subtitle {
        font-size: 16px;
    }
    .section-title {
        font-size: 24px;
    }
}
@media (max-width: 767.98px) {
    .section-block {
        padding: 50px 0;
    }
    .hero-category h1 {
        font-size: 24px;
    }
    .metric-card-dark .metric-number {
        font-size: 28px;
    }
    .deep-read {
        padding: 20px;
    }
    .footer-custom .footer-bottom {
        flex-direction: column;
        gap: 6px;
        align-items: flex-start;
    }
    .step-progress-bar .step-item {
        padding: 4px 6px;
    }
    .step-item .step-name {
        font-size: 12px;
    }
    .step-connector {
        width: 16px;
    }
}
@media (max-width: 575.98px) {
    .hero-category {
        padding: 30px 0 40px;
    }
    .hero-category h1 {
        font-size: 22px;
    }
    .hero-category .hero-subtitle {
        font-size: 15px;
    }
    .section-title {
        font-size: 21px;
    }
    .btn-primary-custom,
    .btn-outline-custom,
    .btn-outline-dark-custom {
        padding: 8px 16px;
        font-size: 14px;
    }
    .card-custom {
        padding: 18px;
    }
    .compare-card {
        padding: 20px;
    }
}

/* roulang page: category1 */
:root {
            --penguin-black: #1A1D23;
            --polar-cyan: #D4F0F7;
            --aurora-orange: #FF6B35;
            --graphite-blue: #2C3E50;
            --snow-gray: #F5F7FA;
            --tundra-green: #2E8B6F;
            --glacier-red: #E74C3C;
            --text-primary: #1A1D23;
            --text-secondary: #2C3E50;
            --text-light: #6B7280;
            --border-color: #E5E7EB;
            --card-white: #FFFFFF;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --radius-badge: 50px;
            --radius-hero-img: 20px;
            --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
            --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
            --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition-base: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0;
            color: var(--text-primary);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--aurora-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 576px) {
            .section-padding {
                padding: 60px 0;
            }
        }

        /* ========== 顶部导航 ========== */
        .navbar-custom {
            background-color: var(--penguin-black);
            padding: 0;
            min-height: 64px;
            z-index: 1030;
            box-shadow: var(--shadow-nav);
        }
        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
        }
        .navbar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--penguin-black);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            transition: border-color var(--transition-base);
        }
        .navbar-brand:hover .logo-icon {
            border-color: var(--aurora-orange);
        }
        .navbar-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .navbar-custom .nav-link {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 500;
            padding: 22px 14px;
            transition: color var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--aurora-orange);
            border-radius: 2px;
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid var(--polar-cyan);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }
        .navbar-custom .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            width: 24px;
            height: 24px;
        }
        .navbar-custom .navbar-toggler-icon::before {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
        }
        .step-progress-bar {
            background-color: var(--graphite-blue);
            padding: 10px 0;
            z-index: 1025;
            border-top: 1px solid rgba(212, 240, 247, 0.15);
        }
        .step-progress-bar .steps-wrapper {
            display: flex;
            align-items: center;
            gap: 0;
            min-width: max-content;
            padding: 0 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .step-progress-bar .steps-wrapper::-webkit-scrollbar {
            display: none;
        }
        .step-progress-bar .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
            flex-shrink: 0;
        }
        .step-progress-bar .step-item:hover {
            background-color: rgba(255, 255, 255, 0.08);
        }
        .step-item .step-circle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-base);
        }
        .step-item.completed .step-circle {
            background-color: var(--tundra-green);
            color: #fff;
            border: 2px solid var(--tundra-green);
        }
        .step-item.current .step-circle {
            background-color: var(--aurora-orange);
            color: #fff;
            border: 2px solid var(--aurora-orange);
        }
        .step-item.pending .step-circle {
            background-color: transparent;
            color: #B0B8C4;
            border: 2px solid var(--polar-cyan);
        }
        .step-item .step-name {
            font-size: 13px;
            color: #D0D5DC;
            font-weight: 500;
        }
        .step-item.current .step-name {
            color: #FFFFFF;
            font-weight: 600;
        }
        .step-item.completed .step-name {
            color: #A8C9B5;
        }
        .step-connector {
            width: 24px;
            height: 2px;
            background-color: rgba(212, 240, 247, 0.4);
            flex-shrink: 0;
            margin: 0 2px;
            border-radius: 2px;
        }
        @media (max-width: 576px) {
            .step-item .step-name {
                font-size: 12px;
                max-width: 52px;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .step-connector {
                width: 12px;
            }
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background-color: var(--aurora-orange);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            transition: background-color var(--transition-base), transform var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: #E85A2A;
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            background-color: #D14E1F;
            transform: translateY(0);
        }
        .btn-outline-custom {
            background-color: transparent;
            border: 1px solid var(--polar-cyan);
            color: var(--polar-cyan);
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            transition: background-color var(--transition-base), color var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: rgba(212, 240, 247, 0.1);
            color: #FFFFFF;
        }
        .text-link-arrow {
            color: var(--aurora-orange);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
        }
        .text-link-arrow i {
            transition: transform var(--transition-base);
        }
        .text-link-arrow:hover {
            color: #E85A2A;
            gap: 10px;
        }
        .text-link-arrow:hover i {
            transform: translateX(3px);
        }

        /* ========== 徽章/标签 ========== */
        .badge-polar {
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-orange {
            background-color: var(--aurora-orange);
            color: #FFFFFF;
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-green {
            background-color: var(--tundra-green);
            color: #FFFFFF;
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-graphite {
            background-color: var(--graphite-blue);
            color: var(--polar-cyan);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        /* ========== 卡片 ========== */
        .service-card {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
        }
        .service-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            aspect-ratio: 3 / 2;
        }
        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .service-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .service-card .card-body {
            padding: 22px 24px;
        }
        .service-card .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .service-card .card-text {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 14px;
            line-height: 1.7;
        }

        /* ========== Hero 分类页 ========== */
        .hero-category {
            background-color: var(--penguin-black);
            background-image: linear-gradient(rgba(26, 29, 35, 0.82), rgba(26, 29, 35, 0.9)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 56vh;
            display: flex;
            align-items: center;
            position: relative;
            padding: 60px 0;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 20% 30%, rgba(212, 240, 247, 0.12) 0, transparent 28%), radial-gradient(circle at 80% 70%, rgba(255, 107, 53, 0.1) 0, transparent 30%), radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 100% 100%, 100% 100%, 32px 32px;
            pointer-events: none;
        }
        .hero-category .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-category h1 {
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .hero-category .hero-subtitle {
            font-size: 18px;
            color: var(--polar-cyan);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 680px;
        }
        .hero-category .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        .countdown-bar {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 28px;
        }
        .countdown-bar .countdown-label {
            color: #B0B8C4;
            font-size: 13px;
            font-weight: 500;
        }
        .countdown-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            line-height: 1.2;
            min-width: 44px;
            text-align: center;
        }
        .countdown-unit {
            font-size: 13px;
            color: #B0B8C4;
            text-align: center;
        }
        .countdown-block {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        @media (max-width: 576px) {
            .hero-category {
                min-height: auto;
                padding: 50px 0 40px;
            }
            .hero-category h1 {
                font-size: 28px;
            }
            .hero-category .hero-subtitle {
                font-size: 16px;
            }
            .countdown-number {
                font-size: 24px;
                min-width: 32px;
            }
            .countdown-bar {
                gap: 10px;
            }
        }

        /* ========== 训练服务矩阵 ========== */
        .service-section {
            background-color: var(--snow-gray);
        }
        .service-section .section-heading {
            margin-bottom: 40px;
        }
        .section-heading h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .section-heading p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 720px;
            margin-bottom: 0;
        }
        .service-list-item {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
            height: 100%;
        }
        .service-list-item:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .service-list-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--graphite-blue);
            font-size: 20px;
            flex-shrink: 0;
        }
        .service-list-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .service-list-body p {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== 深度正文区 ========== */
        .deep-content-section {
            background-color: #FFFFFF;
        }
        .deep-content-card {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-large);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
        }
        .deep-content-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .deep-content-card p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .deep-content-card p:last-child {
            margin-bottom: 0;
        }
        @media (max-width: 576px) {
            .deep-content-card {
                padding: 24px 20px;
            }
        }

        /* ========== 训练流程 ========== */
        .process-section {
            background-color: var(--graphite-blue);
        }
        .process-section h2 {
            color: #FFFFFF;
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }
        .process-section .section-sub {
            color: #B0B8C4;
            font-size: 16px;
            margin-bottom: 40px;
        }
        .process-step-card {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            height: 100%;
            transition: background-color var(--transition-base), border-color var(--transition-base);
        }
        .process-step-card:hover {
            background-color: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 107, 53, 0.4);
        }
        .process-step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--aurora-orange);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
        }
        .process-step-card h4 {
            color: #FFFFFF;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step-card p {
            color: #C8CDD5;
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== 数据指标 ========== */
        .metrics-section {
            background-color: var(--penguin-black);
            padding: 70px 0;
        }
        .metrics-section .section-heading h2 {
            color: #FFFFFF;
        }
        .metrics-section .section-heading p {
            color: #A0A8B4;
        }
        .metric-card-dark {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            text-align: center;
            height: 100%;
        }
        .metric-card-dark .metric-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            line-height: 1.3;
            margin-bottom: 4px;
        }
        .metric-card-dark .metric-name {
            font-size: 13px;
            color: #FFFFFF;
            font-weight: 500;
        }
        .metric-card-dark .metric-trend {
            font-size: 12px;
            font-weight: 600;
            margin-top: 6px;
        }
        .metric-trend.up {
            color: var(--tundra-green);
        }
        .metric-trend.down {
            color: var(--glacier-red);
        }

        /* ========== 对比卡片 ========== */
        .compare-section {
            background-color: #FFFFFF;
        }
        .compare-card {
            background-color: var(--card-white);
            border-radius: var(--radius-large);
            padding: 28px 30px;
            box-shadow: var(--shadow-form);
            height: 100%;
        }
        .compare-card.compare-ours {
            border: 2px solid var(--tundra-green);
        }
        .compare-card.compare-theirs {
            border: 2px solid var(--border-color);
        }
        .compare-card .compare-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
        }
        .compare-card.compare-ours .compare-title {
            color: var(--tundra-green);
        }
        .compare-card.compare-theirs .compare-title {
            color: var(--text-light);
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .compare-list li:last-child {
            margin-bottom: 0;
        }
        .compare-list .icon-check {
            color: var(--tundra-green);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .compare-list .icon-x {
            color: var(--glacier-red);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ========== 适用场景 ========== */
        .scenario-section {
            background-color: var(--snow-gray);
        }
        .scenario-card {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            text-align: center;
            height: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
        }
        .scenario-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .scenario-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin: 0 auto 14px;
        }
        .scenario-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--snow-gray);
        }
        .faq-accordion {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background-color: transparent;
        }
        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }
        .faq-accordion .accordion-button {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            background-color: #FFFFFF;
            box-shadow: none;
            border: none;
            transition: color var(--transition-base), background-color var(--transition-base);
            line-height: 1.5;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--aurora-orange);
            background-color: rgba(212, 240, 247, 0.25);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
            border: none;
        }
        .faq-accordion .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--aurora-orange);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform var(--transition-base);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: '-';
        }
        .faq-accordion .accordion-body {
            padding: 4px 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== CTA表单 ========== */
        .cta-section {
            background-color: var(--penguin-black);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 15% 80%, rgba(255, 107, 53, 0.08) 0, transparent 35%), radial-gradient(circle at 85% 20%, rgba(212, 240, 247, 0.08) 0, transparent 30%);
            pointer-events: none;
        }
        .cta-section h2 {
            color: #FFFFFF;
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            text-align: center;
            margin-bottom: 12px;
        }
        .cta-section .cta-sub {
            color: #B0B8C4;
            font-size: 16px;
            text-align: center;
            margin-bottom: 36px;
        }
        .cta-form-card {
            background-color: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px;
            max-width: 680px;
            margin: 0 auto;
            box-shadow: var(--shadow-form);
        }
        .cta-form-card .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--graphite-blue);
            margin-bottom: 6px;
        }
        .cta-form-card .form-control,
        .cta-form-card .form-select {
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 14px;
            font-size: 15px;
            color: var(--text-primary);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            min-height: 46px;
        }
        .cta-form-card .form-control:focus,
        .cta-form-card .form-select:focus {
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
        }
        .cta-form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .cta-form-card .btn-submit {
            width: 100%;
            padding: 13px 20px;
            font-size: 16px;
            font-weight: 700;
            background-color: var(--aurora-orange);
            color: #ffffff;
            border: none;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
            margin-top: 8px;
        }
        .cta-form-card .btn-submit:hover {
            background-color: #E85A2A;
        }
        .trust-badges {
            display: flex;
            gap: 22px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 26px;
            text-align: center;
        }
        .trust-badge-item {
            color: #C8CDD5;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .trust-badge-item i {
            color: var(--tundra-green);
            font-size: 16px;
        }
        @media (max-width: 576px) {
            .cta-form-card {
                padding: 22px 18px;
            }
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background-color: var(--graphite-blue);
            padding: 50px 0 28px;
            color: #C8CDD5;
        }
        .footer-custom .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-custom .footer-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
        }
        .footer-custom .footer-desc {
            font-size: 14px;
            color: #A0A8B4;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .footer-custom .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom .footer-links li {
            margin-bottom: 8px;
        }
        .footer-custom .footer-links a {
            color: var(--polar-cyan);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-custom .footer-links a:hover {
            color: var(--aurora-orange);
        }
        .footer-custom .footer-contact {
            font-size: 14px;
            color: #A0A8B4;
            line-height: 2;
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #9098A3;
        }
        .footer-custom .footer-bottom a {
            color: var(--polar-cyan);
            transition: color var(--transition-base);
        }
        .footer-custom .footer-bottom a:hover {
            color: var(--aurora-orange);
        }
        @media (max-width: 768px) {
            .footer-custom {
                padding: 36px 0 20px;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category6 */
:root {
            --penguin-black: #1A1D23;
            --polar-cyan: #D4F0F7;
            --aurora-orange: #FF6B35;
            --graphite-blue: #2C3E50;
            --snow-gray: #F5F7FA;
            --tundra-green: #2E8B6F;
            --glacier-red: #E74C3C;
            --text-primary: #1A1D23;
            --text-secondary: #2C3E50;
            --text-light: #6B7280;
            --border-color: #E5E7EB;
            --card-white: #FFFFFF;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --radius-badge: 50px;
            --radius-hero-img: 20px;
            --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
            --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
            --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition-base: 0.3s ease;
        }

        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0;
            color: var(--text-primary);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--aurora-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 顶部导航 ========== */
        .navbar-custom {
            background-color: var(--penguin-black);
            padding: 0;
            min-height: 64px;
            z-index: 1030;
            box-shadow: var(--shadow-nav);
        }
        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
        }
        .navbar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--penguin-black);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            transition: border-color var(--transition-base);
        }
        .navbar-brand:hover .logo-icon {
            border-color: var(--aurora-orange);
        }
        .navbar-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .navbar-custom .nav-link {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 500;
            padding: 22px 14px;
            transition: color var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--aurora-orange);
            border-radius: 2px;
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid var(--polar-cyan);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }
        .navbar-custom .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            width: 24px;
            height: 24px;
        }
        .navbar-custom .navbar-toggler-icon::before {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
        }

        /* 步骤进度条 */
        .step-progress-bar {
            background-color: var(--graphite-blue);
            border-top: 1px solid rgba(212, 240, 247, 0.15);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .step-progress-bar .steps-wrapper {
            display: flex;
            align-items: center;
            gap: 0;
            min-width: max-content;
            padding: 0;
            height: 48px;
        }
        .step-progress-bar .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
        }
        .step-progress-bar .step-item:hover {
            background-color: rgba(255, 255, 255, 0.08);
        }
        .step-item .step-circle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-base);
        }
        .step-item.completed .step-circle {
            background-color: var(--tundra-green);
            color: #fff;
            border: 2px solid var(--tundra-green);
        }
        .step-item.current .step-circle {
            background-color: var(--aurora-orange);
            color: #fff;
            border: 2px solid var(--aurora-orange);
        }
        .step-item.pending .step-circle {
            background-color: transparent;
            color: #B0B8C4;
            border: 2px solid var(--polar-cyan);
        }
        .step-item .step-name {
            font-size: 13px;
            color: #FFFFFF;
            font-weight: 500;
        }
        .step-item.current .step-name {
            color: #FFFFFF;
            font-weight: 700;
        }
        .step-item.pending .step-name {
            color: #B0B8C4;
        }
        .step-connector {
            width: 24px;
            height: 2px;
            background-color: var(--polar-cyan);
            opacity: 0.4;
            flex-shrink: 0;
            border-radius: 2px;
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            background-color: var(--aurora-orange);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: background-color var(--transition-base), transform var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: #E85A2A;
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-primary-custom:active {
            background-color: #D14E1F;
            transform: translateY(0);
        }
        .btn-outline-custom {
            background-color: transparent;
            color: var(--graphite-blue);
            border: 1px solid var(--polar-cyan);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: background-color var(--transition-base), color var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: rgba(212, 240, 247, 0.1);
            color: var(--aurora-orange);
            border-color: var(--aurora-orange);
        }
        .btn-text-link {
            color: var(--aurora-orange);
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
            background: none;
            border: none;
            padding: 0;
        }
        .btn-text-link:hover {
            gap: 10px;
            color: #E85A2A;
        }
        .btn-white-outline {
            background-color: transparent;
            color: #FFFFFF;
            border: 1px solid var(--polar-cyan);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: background-color var(--transition-base), border-color var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-white-outline:hover,
        .btn-white-outline:focus {
            background-color: rgba(212, 240, 247, 0.1);
            border-color: var(--aurora-orange);
            color: var(--aurora-orange);
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            overflow: hidden;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--aurora-orange);
        }

        /* ========== 徽章/标签 ========== */
        .badge-custom {
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-accent {
            background-color: var(--aurora-orange);
            color: #FFFFFF;
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-success {
            background-color: var(--tundra-green);
            color: #FFFFFF;
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        /* ========== 板块通用间距 ========== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== Hero区 ========== */
        .hero-banner {
            background-color: var(--penguin-black);
            background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px), radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 32px 32px, 48px 48px;
            background-position: 0 0, 16px 16px;
            padding: 70px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.12), transparent 70%);
            pointer-events: none;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 240, 247, 0.08), transparent 70%);
            pointer-events: none;
        }
        .hero-banner .container {
            position: relative;
            z-index: 2;
        }
        .hero-banner .hero-h1 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .hero-banner .hero-sub {
            font-size: 18px;
            color: var(--polar-cyan);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 640px;
        }
        .hero-banner .hero-img-wrap {
            border-radius: var(--radius-hero-img);
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
            height: 100%;
            min-height: 280px;
        }
        .hero-banner .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        /* ========== 品牌起源区 ========== */
        .origin-section {
            background-color: #FFFFFF;
        }
        .origin-section .origin-img {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .origin-section .origin-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .origin-paragraph {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        /* ========== 时间线 ========== */
        .timeline-section {
            background-color: var(--snow-gray);
        }
        .timeline-container {
            position: relative;
            padding-left: 32px;
        }
        .timeline-container::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--polar-cyan);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 16px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -27px;
            top: 8px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--aurora-orange);
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 2px var(--aurora-orange);
        }
        .timeline-item .timeline-year {
            font-size: 18px;
            font-weight: 700;
            color: var(--aurora-orange);
            margin-bottom: 4px;
        }
        .timeline-item .timeline-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .timeline-item .timeline-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== 数据与成就 ========== */
        .metrics-dark {
            background-color: var(--graphite-blue);
            padding: 70px 0;
        }
        .metrics-dark .metric-card {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            padding: 28px 20px;
            text-align: center;
            transition: transform var(--transition-base), border-color var(--transition-base);
        }
        .metrics-dark .metric-card:hover {
            transform: translateY(-4px);
            border-color: var(--aurora-orange);
        }
        .metrics-dark .metric-number {
            font-size: 36px;
            font-weight: 700;
            font-feature-settings: "tnum";
            color: var(--aurora-orange);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .metrics-dark .metric-name {
            font-size: 14px;
            color: #FFFFFF;
            font-weight: 500;
        }

        /* ========== 价值观卡片 ========== */
        .values-section {
            background-color: #FFFFFF;
        }
        .value-card {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px;
            height: 100%;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .value-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--aurora-orange);
        }
        .value-card .value-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--graphite-blue);
            font-size: 20px;
            margin-bottom: 16px;
        }
        .value-card .value-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .value-card .value-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== 团队区 ========== */
        .team-section {
            background-color: var(--snow-gray);
        }
        .team-card {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .team-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .team-card .team-img-wrap {
            aspect-ratio: 3/2;
            overflow: hidden;
        }
        .team-card .team-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .team-card:hover .team-img-wrap img {
            transform: scale(1.04);
        }
        .team-card .team-info {
            padding: 20px;
        }
        .team-card .team-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .team-card .team-role {
            font-size: 14px;
            color: var(--aurora-orange);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .team-card .team-bio {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 社会责任 ========== */
        .responsibility-section {
            background-color: #FFFFFF;
        }
        .resp-card {
            background-color: var(--snow-gray);
            border-radius: var(--radius-large);
            padding: 32px;
            height: 100%;
            border: 1px solid transparent;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .resp-card:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card);
        }
        .resp-card .resp-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .resp-card .resp-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--snow-gray);
        }
        .accordion-custom {
            background-color: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background-color: transparent;
        }
        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-custom .accordion-button {
            background-color: var(--card-white);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 700;
            padding: 16px 24px;
            border: none;
            box-shadow: none;
            transition: color var(--transition-base), background-color var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--aurora-orange);
            background-color: rgba(212, 240, 247, 0.15);
        }
        .accordion-custom .accordion-button::after {
            content: '+';
            background-image: none;
            color: var(--aurora-orange);
            font-size: 22px;
            font-weight: 700;
            width: auto;
            height: auto;
            transition: transform var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: none;
            color: var(--aurora-orange);
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border: none;
        }
        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 16px 24px 20px;
        }

        /* ========== CTA 表单区 ========== */
        .cta-section {
            background-color: var(--penguin-black);
            padding: 80px 0;
        }
        .cta-section .cta-form-card {
            background-color: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px;
            box-shadow: var(--shadow-form);
        }
        .form-control-custom {
            background-color: #FFFFFF;
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 12px;
            font-size: 15px;
            color: var(--text-primary);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            width: 100%;
        }
        .form-control-custom:focus {
            outline: none;
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
        }
        .form-label-custom {
            font-size: 14px;
            font-weight: 700;
            color: var(--graphite-blue);
            margin-bottom: 6px;
            display: block;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-size: 14px;
            margin-bottom: 12px;
        }
        .trust-item .trust-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: rgba(212, 240, 247, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 14px;
            flex-shrink: 0;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background-color: var(--graphite-blue);
            color: #FFFFFF;
            padding: 60px 0 30px;
        }
        .footer-custom .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-custom .footer-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .footer-custom .footer-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
        }
        .footer-custom .footer-desc {
            font-size: 15px;
            color: #B0B8C4;
            line-height: 1.8;
        }
        .footer-custom .footer-heading {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom .footer-links li {
            margin-bottom: 8px;
        }
        .footer-custom .footer-links a {
            color: var(--polar-cyan);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-custom .footer-links a:hover {
            color: var(--aurora-orange);
        }
        .footer-custom .footer-contact {
            color: #B0B8C4;
            font-size: 14px;
            line-height: 2;
        }
        .footer-custom .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: #B0B8C4;
        }
        .footer-custom .footer-bottom a {
            color: var(--polar-cyan);
            transition: color var(--transition-base);
        }
        .footer-custom .footer-bottom a:hover {
            color: var(--aurora-orange);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .hero-banner .hero-h1 {
                font-size: 32px;
            }
            .hero-banner .hero-sub {
                font-size: 16px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .navbar-custom .nav-link {
                padding: 14px 16px;
                font-size: 14px;
            }
            .navbar-custom .nav-link.active::after {
                bottom: 6px;
                left: 14px;
                right: 14px;
            }
            .navbar-custom .navbar-collapse {
                background-color: var(--penguin-black);
                border-top: 1px solid rgba(212, 240, 247, 0.15);
                padding: 12px 16px;
                border-radius: 0 0 8px 8px;
            }
        }
        @media (max-width: 767px) {
            .hero-banner {
                padding: 40px 0 50px;
            }
            .hero-banner .hero-h1 {
                font-size: 28px;
            }
            .hero-banner .hero-img-wrap {
                min-height: 200px;
                margin-top: 24px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .metrics-dark .metric-number {
                font-size: 28px;
            }
            .timeline-container {
                padding-left: 24px;
            }
            .timeline-container::before {
                left: 4px;
            }
            .timeline-item::before {
                left: -21px;
                width: 12px;
                height: 12px;
            }
            .cta-section .cta-form-card {
                padding: 20px;
            }
        }
        @media (max-width: 575px) {
            .hero-banner .hero-h1 {
                font-size: 24px;
            }
            .hero-banner .hero-sub {
                font-size: 15px;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
            .step-progress-bar .step-name {
                font-size: 12px;
            }
            .step-item .step-circle {
                width: 20px;
                height: 20px;
                font-size: 11px;
            }
        }

/* roulang page: category5 */
:root {
            --penguin-black: #1A1D23;
            --polar-cyan: #D4F0F7;
            --aurora-orange: #FF6B35;
            --graphite-blue: #2C3E50;
            --snow-gray: #F5F7FA;
            --tundra-green: #2E8B6F;
            --glacier-red: #E74C3C;
            --text-primary: #1A1D23;
            --text-secondary: #2C3E50;
            --text-light: #6B7280;
            --border-color: #E5E7EB;
            --card-white: #FFFFFF;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --radius-badge: 50px;
            --radius-hero-img: 20px;
            --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
            --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
            --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition-base: 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0;
            color: var(--text-primary);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }

        a:hover {
            color: var(--aurora-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        h1 {
            font-size: 36px;
            font-weight: 800;
        }

        h2 {
            font-size: 30px;
            font-weight: 700;
        }

        h3 {
            font-size: 22px;
            font-weight: 600;
        }

        h4 {
            font-size: 17px;
            font-weight: 600;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

        .section-block {
            padding: 80px 0;
        }

        .section-block-sm {
            padding: 56px 0;
        }

        .section-label {
            display: inline-block;
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* ========== 顶部导航 ========== */
        .navbar-custom {
            background-color: var(--penguin-black);
            padding: 0;
            min-height: 64px;
            z-index: 1030;
            box-shadow: var(--shadow-nav);
        }

        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
        }

        .navbar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--penguin-black);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            transition: border-color var(--transition-base);
        }

        .navbar-brand:hover .logo-icon {
            border-color: var(--aurora-orange);
        }

        .navbar-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .navbar-custom .nav-link {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 500;
            padding: 22px 14px;
            transition: color var(--transition-base);
            position: relative;
            white-space: nowrap;
        }

        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--aurora-orange);
        }

        .navbar-custom .nav-link.active {
            color: var(--aurora-orange);
        }

        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--aurora-orange);
            border-radius: 2px;
        }

        .navbar-custom .navbar-toggler {
            border: 1px solid var(--polar-cyan);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }

        .navbar-custom .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            width: 24px;
            height: 24px;
        }

        .navbar-custom .navbar-toggler-icon::before {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
        }

        .step-progress-bar {
            background-color: var(--graphite-blue);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .step-progress-bar .steps-wrapper {
            display: flex;
            align-items: center;
            gap: 0;
            min-width: max-content;
            padding: 0 12px;
        }

        .step-progress-bar .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
        }

        .step-progress-bar .step-item:hover {
            background-color: rgba(255, 255, 255, 0.08);
        }

        .step-item .step-circle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-base);
        }

        .step-item.completed .step-circle {
            background-color: var(--tundra-green);
            color: #fff;
            border: 2px solid var(--tundra-green);
        }

        .step-item.current .step-circle {
            background-color: var(--aurora-orange);
            color: #fff;
            border: 2px solid var(--aurora-orange);
        }

        .step-item.pending .step-circle {
            background-color: transparent;
            color: #B0B8C4;
            border: 2px solid var(--polar-cyan);
        }

        .step-item .step-name {
            font-size: 13px;
            color: #FFFFFF;
            font-weight: 500;
        }

        .step-item.completed .step-name {
            color: var(--tundra-green);
        }

        .step-item.current .step-name {
            color: #FFFFFF;
            font-weight: 700;
        }

        .step-item.pending .step-name {
            color: #B0B8C4;
        }

        .step-connector {
            width: 24px;
            height: 2px;
            background-color: var(--polar-cyan);
            opacity: 0.4;
            flex-shrink: 0;
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background-color: var(--aurora-orange);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: #E85A2A;
            color: #FFFFFF;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.35);
        }

        .btn-primary-custom:active {
            background-color: #D14E1F;
            box-shadow: 0 2px 6px rgba(255, 107, 53, 0.25);
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--polar-cyan);
            border: 1px solid var(--polar-cyan);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: rgba(212, 240, 247, 0.1);
            color: var(--polar-cyan);
            border-color: var(--polar-cyan);
        }

        .btn-light-custom {
            background-color: #FFFFFF;
            color: var(--penguin-black);
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-light-custom:hover {
            background-color: var(--polar-cyan);
            color: var(--penguin-black);
        }

        .text-link {
            color: var(--aurora-orange);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }

        .text-link i {
            transition: transform var(--transition-base);
        }

        .text-link:hover {
            color: #E85A2A;
        }

        .text-link:hover i {
            transform: translateX(4px);
        }

        /* ========== Hero区 ========== */
        .hero-member {
            background-color: var(--penguin-black);
            background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 24px 24px;
            padding: 72px 0 64px;
            min-height: 52vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .hero-member::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 240, 247, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-member .hero-badge {
            display: inline-block;
            background: rgba(255, 107, 53, 0.15);
            color: var(--aurora-orange);
            border-radius: var(--radius-badge);
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .hero-member h1 {
            color: #FFFFFF;
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.8px;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .hero-member h1 .highlight {
            color: var(--aurora-orange);
        }

        .hero-member .hero-subtitle {
            color: var(--polar-cyan);
            font-size: 18px;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-member .hero-image-wrap {
            border-radius: var(--radius-hero-img);
            overflow: hidden;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
            position: relative;
        }

        .hero-member .hero-image-wrap img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: var(--radius-hero-img);
            transition: transform 0.5s ease;
        }

        .hero-member .hero-image-wrap:hover img {
            transform: scale(1.02);
        }

        .hero-member .countdown-ring {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(26, 29, 35, 0.85);
            border-radius: 50%;
            width: 80px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            border: 3px solid var(--aurora-orange);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
        }

        .hero-member .countdown-ring span {
            font-size: 10px;
            font-weight: 400;
            color: var(--polar-cyan);
            letter-spacing: 0.5px;
        }

        .hero-member .carousel-dots {
            display: flex;
            gap: 8px;
            margin-top: 20px;
            align-items: center;
        }

        .hero-member .carousel-dots .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.3);
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
        }

        .hero-member .carousel-dots .dot.active {
            background-color: var(--aurora-orange);
            width: 28px;
            border-radius: 5px;
        }

        /* ========== 会员等级卡片 ========== */
        .membership-tier-section {
            background-color: var(--snow-gray);
        }

        .tier-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-large);
            padding: 32px 28px;
            height: 100%;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .tier-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--aurora-orange);
            transform: translateY(-4px);
        }

        .tier-card.featured {
            border: 2px solid var(--aurora-orange);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.12);
        }

        .tier-card .tier-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--aurora-orange);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .tier-card .tier-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .tier-card .tier-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            letter-spacing: -1px;
            margin-bottom: 4px;
        }

        .tier-card .tier-price small {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-light);
            letter-spacing: 0;
        }

        .tier-card .tier-desc {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .tier-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .tier-card ul li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }

        .tier-card ul li i {
            color: var(--tundra-green);
            font-size: 14px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ========== 权益列表 ========== */
        .benefits-section {
            background-color: #FFFFFF;
        }

        .benefit-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px;
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            transition: all var(--transition-base);
        }

        .benefit-item:hover {
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .benefit-item .benefit-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--polar-cyan);
            color: var(--graphite-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .benefit-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .benefit-item p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== 积分体系 ========== */
        .points-section {
            background: var(--graphite-blue);
            color: #fff;
        }

        .points-section .section-title {
            color: #FFFFFF;
        }

        .points-section .section-subtitle {
            color: #B0B8C4;
        }

        .points-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: center;
            height: 100%;
            transition: all var(--transition-base);
        }

        .points-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 107, 53, 0.4);
        }

        .points-card .points-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--aurora-orange);
            font-feature-settings: "tnum";
            letter-spacing: -1px;
            margin-bottom: 6px;
        }

        .points-card .points-label {
            font-size: 14px;
            color: var(--polar-cyan);
            font-weight: 500;
        }

        /* ========== 对比卡 ========== */
        .compare-section {
            background-color: var(--snow-gray);
        }

        .compare-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px 28px;
            height: 100%;
            position: relative;
        }

        .compare-card.compare-positive {
            border: 1px solid var(--tundra-green);
            box-shadow: 0 4px 16px rgba(46, 139, 111, 0.1);
        }

        .compare-card.compare-negative {
            border: 1px solid var(--border-color);
        }

        .compare-card .compare-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-card .compare-title i {
            color: var(--tundra-green);
        }

        .compare-card.compare-negative .compare-title i {
            color: var(--glacier-red);
        }

        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-card ul li {
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.7;
            border-bottom: 1px solid #F0F2F5;
        }

        .compare-card ul li:last-child {
            border-bottom: none;
        }

        .compare-card ul li .icon-check {
            color: var(--tundra-green);
            font-size: 16px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .compare-card ul li .icon-x {
            color: var(--glacier-red);
            font-size: 16px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ========== 会员故事 ========== */
        .stories-section {
            background-color: #FFFFFF;
        }

        .story-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px;
            height: 100%;
            transition: all var(--transition-base);
        }

        .story-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--polar-cyan);
        }

        .story-card .story-tag {
            display: inline-block;
            background: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 12px;
        }

        .story-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .story-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 深度正文 ========== */
        .deep-content-section {
            background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFB 100%);
        }

        .deep-content-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        .deep-content-card h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .deep-content-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            margin-top: 24px;
            color: var(--text-secondary);
        }

        .deep-content-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--snow-gray);
            padding: 80px 0;
        }

        .accordion-custom {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .accordion-custom .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--border-color);
        }

        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-custom .accordion-button {
            background: var(--card-white);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 24px;
            box-shadow: none;
            transition: all var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(212, 240, 247, 0.25);
            color: var(--aurora-orange);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
            border-color: transparent;
        }

        .accordion-custom .accordion-button::after {
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\f067';
            background-image: none;
            color: var(--aurora-orange);
            font-size: 14px;
            transition: transform var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--aurora-orange);
            transform: rotate(0deg);
        }

        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            padding: 18px 24px;
            background: #FAFBFC;
        }

        /* ========== CTA表单 ========== */
        .cta-form-section {
            background: var(--penguin-black);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 139, 111, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-form-section h2 {
            color: #FFFFFF;
            text-align: center;
            margin-bottom: 12px;
        }

        .cta-form-section .cta-subtitle {
            color: var(--polar-cyan);
            text-align: center;
            margin-bottom: 32px;
            font-size: 16px;
            line-height: 1.7;
        }

        .form-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px;
            box-shadow: var(--shadow-form);
            max-width: 640px;
            margin: 0 auto;
        }

        .form-card .form-label {
            color: var(--graphite-blue);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .form-card .form-control {
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 14px;
            font-size: 14px;
            transition: all var(--transition-base);
            margin-bottom: 16px;
        }

        .form-card .form-control:focus {
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
            outline: none;
        }

        .form-card .form-control::placeholder {
            color: #9CA3AF;
        }

        .form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }

        .form-card .btn-submit-full {
            width: 100%;
            padding: 12px;
            font-size: 16px;
            font-weight: 700;
            background-color: var(--aurora-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            transition: all var(--transition-base);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            cursor: pointer;
        }

        .form-card .btn-submit-full:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
        }

        .form-card .btn-submit-full:active {
            background-color: #D14E1F;
        }

        .trust-badges {
            display: flex;
            justify-content: center;
            gap: 28px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .trust-badges span {
            color: #B0B8C4;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .trust-badges i {
            color: var(--tundra-green);
            font-size: 14px;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background-color: var(--graphite-blue);
            color: #B0B8C4;
            padding: 48px 0 24px;
        }

        .footer-custom .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-custom .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: transparent;
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 16px;
            flex-shrink: 0;
        }

        .footer-custom .footer-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.3px;
        }

        .footer-custom .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #B0B8C4;
            margin-bottom: 0;
        }

        .footer-custom .footer-heading {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-custom .footer-links li {
            margin-bottom: 8px;
        }

        .footer-custom .footer-links a {
            color: var(--polar-cyan);
            font-size: 14px;
            transition: color var(--transition-base);
        }

        .footer-custom .footer-links a:hover {
            color: var(--aurora-orange);
        }

        .footer-custom .footer-contact {
            font-size: 13px;
            line-height: 1.8;
            color: #B0B8C4;
        }

        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(212, 240, 247, 0.1);
            padding-top: 20px;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            font-size: 13px;
            color: #8C95A3;
        }

        .footer-custom .footer-bottom a {
            color: var(--polar-cyan);
            font-size: 13px;
            transition: color var(--transition-base);
        }

        .footer-custom .footer-bottom a:hover {
            color: var(--aurora-orange);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .navbar-custom .nav-link {
                padding: 12px 16px;
                font-size: 14px;
            }
            .navbar-custom .navbar-collapse {
                background-color: var(--penguin-black);
                padding: 12px 0;
                border-top: 1px solid rgba(212, 240, 247, 0.1);
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .hero-member {
                padding: 48px 0;
                min-height: auto;
            }
            .hero-member h1 {
                font-size: 30px;
            }
            .hero-member .hero-image-wrap img {
                height: 260px;
            }
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding: 56px 0;
            }
            .section-block-sm {
                padding: 40px 0;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 24px;
            }
            .section-title {
                font-size: 24px;
            }
            .hero-member h1 {
                font-size: 26px;
            }
            .hero-member .hero-subtitle {
                font-size: 16px;
            }
            .hero-member .hero-image-wrap img {
                height: 220px;
                margin-top: 20px;
            }
            .hero-member .countdown-ring {
                width: 64px;
                height: 64px;
                font-size: 15px;
            }
            .hero-member .countdown-ring span {
                font-size: 8px;
            }
            .tier-card {
                padding: 24px 20px;
            }
            .form-card {
                padding: 24px 20px;
            }
            .trust-badges {
                gap: 16px;
                justify-content: flex-start;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
            .deep-content-card {
                padding: 24px 20px;
            }
        }

        @media (max-width: 519.98px) {
            .step-progress-bar .step-name {
                font-size: 11px;
            }
            .step-progress-bar .step-item {
                gap: 5px;
                padding: 3px 5px;
            }
            .step-connector {
                width: 12px;
            }
            .hero-member h1 {
                font-size: 23px;
            }
            .hero-member .hero-subtitle {
                font-size: 15px;
            }
            .cta-form-section h2 {
                font-size: 22px;
            }
            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category4 */
:root {
            --penguin-black: #1A1D23;
            --polar-cyan: #D4F0F7;
            --aurora-orange: #FF6B35;
            --graphite-blue: #2C3E50;
            --snow-gray: #F5F7FA;
            --tundra-green: #2E8B6F;
            --glacier-red: #E74C3C;
            --text-primary: #1A1D23;
            --text-secondary: #2C3E50;
            --text-light: #6B7280;
            --border-color: #E5E7EB;
            --card-white: #FFFFFF;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --radius-badge: 50px;
            --radius-hero-img: 20px;
            --shadow-card: 0 2px 8px rgba(26, 29, 35, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 29, 35, 0.12);
            --shadow-nav: 0 1px 0 rgba(26, 29, 35, 0.08);
            --shadow-form: 0 4px 16px rgba(26, 29, 35, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition-base: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0;
            color: var(--text-primary);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--aurora-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 顶部导航 ========== */
        .navbar-custom {
            background-color: var(--penguin-black);
            padding: 0;
            min-height: 64px;
            z-index: 1030;
            box-shadow: var(--shadow-nav);
        }
        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
        }
        .navbar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--penguin-black);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            transition: border-color var(--transition-base);
        }
        .navbar-brand:hover .logo-icon {
            border-color: var(--aurora-orange);
        }
        .navbar-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .navbar-custom .nav-link {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 500;
            padding: 22px 16px;
            transition: color var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active {
            color: var(--aurora-orange);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--aurora-orange);
            border-radius: 2px;
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid var(--polar-cyan);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }
        .navbar-custom .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            width: 24px;
            height: 24px;
        }
        .navbar-custom .navbar-toggler-icon::before {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
        }

        /* ========== 步骤进度条 ========== */
        .step-progress-bar {
            background-color: var(--graphite-blue);
            min-height: 48px;
            display: flex;
            align-items: center;
            overflow-x: auto;
            border-top: 1px solid rgba(212, 240, 247, 0.15);
        }
        .step-progress-bar::-webkit-scrollbar {
            height: 3px;
        }
        .step-progress-bar::-webkit-scrollbar-thumb {
            background-color: rgba(212, 240, 247, 0.3);
            border-radius: 3px;
        }
        .step-progress-bar .steps-wrapper {
            display: flex;
            align-items: center;
            gap: 0;
            min-width: max-content;
            padding: 0 12px;
        }
        .step-progress-bar .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base);
        }
        .step-progress-bar .step-item:hover {
            background-color: rgba(255, 255, 255, 0.08);
        }
        .step-item .step-circle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-base);
        }
        .step-item.completed .step-circle {
            background-color: var(--tundra-green);
            color: #fff;
            border: 2px solid var(--tundra-green);
        }
        .step-item.current .step-circle {
            background-color: var(--aurora-orange);
            color: #fff;
            border: 2px solid var(--aurora-orange);
        }
        .step-item.pending .step-circle {
            background-color: transparent;
            color: #B0B8C4;
            border: 2px solid var(--polar-cyan);
        }
        .step-item.completed .step-name,
        .step-item.current .step-name {
            color: #FFFFFF;
            font-weight: 600;
        }
        .step-item.pending .step-name {
            color: #B0B8C4;
        }
        .step-item .step-name {
            font-size: 13px;
            letter-spacing: 0.5px;
        }
        .step-connector {
            width: 24px;
            height: 1px;
            background-color: var(--polar-cyan);
            opacity: 0.45;
            flex-shrink: 0;
            margin: 0 2px;
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            background-color: var(--aurora-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            transition: background-color var(--transition-base), transform var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: #E85A2A;
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            background-color: #D14E1F;
            transform: translateY(0);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            transition: background-color var(--transition-base), border-color var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom.light {
            border-color: var(--polar-cyan);
            color: var(--polar-cyan);
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: rgba(212, 240, 247, 0.1);
            border-color: var(--aurora-orange);
            color: var(--aurora-orange);
        }
        .text-link {
            color: var(--aurora-orange);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
            background: none;
            border: none;
            padding: 0;
            cursor: pointer;
        }
        .text-link:hover {
            gap: 10px;
            color: var(--aurora-orange);
        }
        .text-link i {
            font-size: 13px;
        }

        /* ========== 卡片 ========== */
        .base-card {
            background: var(--card-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            overflow: hidden;
            height: 100%;
        }
        .base-card:hover {
            transform: translateY(-4px);
            border-color: var(--aurora-orange);
            box-shadow: var(--shadow-card-hover);
        }
        .deep-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            color: #fff;
        }

        /* ========== 徽章 ========== */
        .badge-cyan {
            background-color: var(--polar-cyan);
            color: var(--graphite-blue);
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-orange {
            background-color: var(--aurora-orange);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-green {
            background-color: var(--tundra-green);
            color: #fff;
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
        }

        /* ========== Hero ========== */
        .hero-category {
            background-color: var(--penguin-black);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 22px 22px;
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        .hero-category h1 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .hero-category h1 .highlight {
            color: var(--aurora-orange);
        }
        .hero-category .hero-subtitle {
            font-size: 18px;
            color: var(--polar-cyan);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 680px;
        }
        .hero-category .hero-img-wrap {
            border-radius: var(--radius-hero-img);
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }
        .hero-category .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* ========== 板块间距 ========== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 40px;
            max-width: 720px;
        }
        .section-title.light {
            color: #FFFFFF;
        }
        .section-subtitle.light {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== 产品网格 ========== */
        .product-grid .base-card .card-img {
            aspect-ratio: 3/2;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .product-grid .base-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .product-grid .base-card:hover .card-img img {
            transform: scale(1.04);
        }
        .product-grid .base-card .card-body-content {
            padding: 20px 24px 24px;
        }
        .product-grid .base-card .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .product-grid .base-card .card-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .product-grid .base-card .rating {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .product-grid .base-card .rating .stars {
            color: var(--aurora-orange);
        }

        /* ========== 对比区块 ========== */
        .compare-section {
            background-color: var(--snow-gray);
        }
        .compare-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            box-shadow: var(--shadow-card);
            padding: 28px 28px 32px;
            height: 100%;
            border: 1px solid var(--border-color);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .compare-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .compare-card.winner {
            border: 1.5px solid var(--tundra-green);
        }
        .compare-card .compare-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 2px solid var(--border-color);
        }
        .compare-card .compare-header h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0;
        }
        .compare-card.winner .compare-header h3 {
            color: var(--tundra-green);
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
            line-height: 1.7;
        }
        .compare-list li:last-child {
            border-bottom: none;
        }
        .compare-list li .icon-check {
            color: var(--tundra-green);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .compare-list li .icon-x {
            color: var(--glacier-red);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ========== 深度正文区 ========== */
        .deep-content {
            background-color: #FFFFFF;
        }
        .deep-content .content-body {
            font-size: 16px;
            line-height: 2.0;
            color: var(--text-secondary);
        }
        .deep-content .content-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 32px;
            margin-bottom: 14px;
        }
        .deep-content .content-body p {
            margin-bottom: 16px;
        }
        .deep-content .content-body ul {
            padding-left: 20px;
            margin-bottom: 16px;
        }
        .deep-content .content-body ul li {
            margin-bottom: 8px;
            position: relative;
            list-style: none;
            padding-left: 20px;
        }
        .deep-content .content-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--aurora-orange);
        }
        .deep-content .img-inline {
            border-radius: var(--radius-large);
            overflow: hidden;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }
        .deep-content .img-inline img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        /* ========== 流程区块 ========== */
        .process-section {
            background-color: var(--penguin-black);
            position: relative;
        }
        .process-step-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(212, 240, 247, 0.15);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            height: 100%;
            transition: border-color var(--transition-base), background-color var(--transition-base);
        }
        .process-step-card:hover {
            border-color: var(--aurora-orange);
            background: rgba(255, 107, 53, 0.08);
        }
        .process-step-card .step-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--aurora-orange);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
        }
        .process-step-card h4 {
            color: #FFFFFF;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step-card p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin: 0;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--snow-gray);
        }
        .accordion-custom {
            background: var(--card-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background: transparent;
        }
        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-custom .accordion-button {
            background: var(--card-white);
            color: var(--text-primary);
            font-size: 17px;
            font-weight: 700;
            padding: 20px 28px;
            border: none;
            box-shadow: none;
            transition: color var(--transition-base), background-color var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--aurora-orange);
            background-color: rgba(212, 240, 247, 0.05);
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            color: var(--aurora-orange);
            font-size: 14px;
            transition: transform var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '\f068';
            transform: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-custom .accordion-body {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            padding: 0 28px 22px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background-color: var(--penguin-black);
            padding: 72px 0;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 20px 20px;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-form-card {
            background: var(--card-white);
            border-radius: var(--radius-large);
            padding: 32px;
            box-shadow: var(--shadow-form);
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-form-card .form-label {
            font-weight: 600;
            font-size: 14px;
            color: var(--graphite-blue);
            margin-bottom: 6px;
        }
        .cta-form-card .form-control {
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 10px 12px;
            font-size: 15px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .cta-form-card .form-control:focus {
            border-color: var(--aurora-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
            outline: none;
        }
        .cta-form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .cta-form-card .submit-btn {
            background-color: var(--aurora-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 20px;
            font-weight: 600;
            font-size: 16px;
            width: 100%;
            transition: background-color var(--transition-base);
        }
        .cta-form-card .submit-btn:hover {
            background-color: #E85A2A;
        }
        .cta-trust {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 24px;
        }
        .cta-trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
        }
        .cta-trust-item i {
            color: var(--tundra-green);
            font-size: 16px;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background-color: var(--graphite-blue);
            padding: 56px 0 0;
            color: #fff;
        }
        .footer-custom .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-custom .footer-brand .brand-text {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
        }
        .footer-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--graphite-blue);
            border: 2px solid var(--polar-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--polar-cyan);
            font-size: 20px;
            flex-shrink: 0;
        }
        .footer-custom .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }
        .footer-custom .footer-heading {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
        }
        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom .footer-links li {
            margin-bottom: 10px;
        }
        .footer-custom .footer-links a {
            color: var(--polar-cyan);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-custom .footer-links a:hover {
            color: var(--aurora-orange);
        }
        .footer-custom .footer-contact {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 2.0;
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-custom .footer-bottom a {
            color: var(--polar-cyan);
            transition: color var(--transition-base);
        }
        .footer-custom .footer-bottom a:hover {
            color: var(--aurora-orange);
            text-decoration: none;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .navbar-custom .nav-link {
                padding: 12px 16px;
            }
            .navbar-custom .nav-link.active::after {
                display: none;
            }
            .hero-category {
                padding: 40px 0 36px;
            }
            .hero-category h1 {
                font-size: 28px;
            }
            .section-padding {
                padding: 60px 0;
            }
            .section-padding-sm {
                padding: 48px 0;
            }
            .section-title {
                font-size: 26px;
            }
        }
        @media (max-width: 767.98px) {
            .hero-category h1 {
                font-size: 24px;
            }
            .hero-category .hero-subtitle {
                font-size: 16px;
            }
            .step-progress-bar .step-name {
                font-size: 11px;
                letter-spacing: 0;
            }
            .step-connector {
                width: 12px;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-form-card {
                padding: 20px;
            }
            .cta-form-card .submit-btn {
                font-size: 15px;
                padding: 10px 16px;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .product-grid .base-card .card-body-content {
                padding: 16px 18px 18px;
            }
            .compare-card {
                padding: 20px 18px 24px;
                margin-bottom: 16px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-category h1 {
                font-size: 22px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 28px;
            }
            .deep-content .content-body {
                font-size: 15px;
            }
            .cta-trust {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }
        }