/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d4f7c;
            --primary-dark: #122742;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-light: #f8fafc;
            --bg-gray: #f1f5f9;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --border-soft: #e2e8f0;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --font-main: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-main);
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

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

        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-soft);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .desktop-nav a {
            padding: 10px 18px;
            border-radius: 8px;
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        .desktop-nav a:hover {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.06);
        }

        .desktop-nav a.active {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.1);
            font-weight: 600;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), #d97706);
            color: #fff !important;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 24px;
            border-radius: 50px;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
        }

        .header-cta i {
            font-size: 0.85rem;
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-soft);
            padding: 6px 0 10px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
        }

        .mobile-bottom-tab a {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            font-size: 0.72rem;
            color: var(--text-muted);
            padding: 6px 0;
            border-radius: 10px;
        }

        .mobile-bottom-tab a i {
            font-size: 1.15rem;
        }

        .mobile-bottom-tab a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-bottom-tab a.active i {
            transform: translateY(-1px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
            color: #fff;
            padding: 100px 0 90px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 39, 66, 0.94) 0%, rgba(30, 58, 95, 0.82) 50%, rgba(45, 79, 124, 0.6) 100%);
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 28px;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .hero h1 span {
            color: var(--accent);
        }

        .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), #d97706);
            color: #fff;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 0.95rem;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.45);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 500;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            background: transparent;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            max-width: 720px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
        }

        .hero-stat {
            text-align: center;
            padding: 8px;
        }

        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat .num i {
            color: var(--accent);
            font-style: normal;
            font-size: 1.2rem;
            margin-right: 2px;
        }

        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        .hero-stat + .hero-stat {
            border-left: 1px solid rgba(255, 255, 255, 0.15);
        }

        /* ===== Section General ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-gray);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head h2 span {
            color: var(--primary);
        }

        .section-head p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .section-eye {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
        }

        /* ===== Features ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.3s;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card:hover::after {
            opacity: 1;
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 24px;
            box-shadow: 0 6px 16px rgba(30, 58, 95, 0.25);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== Category Entry ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .category-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .category-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .category-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
            padding: 4px 12px;
            border-radius: 50px;
            align-self: flex-start;
            margin-bottom: 14px;
        }

        .category-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .category-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            flex: 1;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
        }

        .category-link i {
            transition: transform 0.3s;
        }

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

        /* ===== Latest Info ===== */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .info-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .info-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .info-content {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .info-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .info-meta .badge {
            background: rgba(30, 58, 95, 0.08);
            color: var(--primary);
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            font-size: 0.75rem;
        }

        .info-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 16px;
        }

        .info-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .info-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 50px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-soft);
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ===== Stats Section ===== */
        .stats-section {
            background: var(--primary-dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.15), transparent 70%);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            transition: all 0.3s;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .stat-item .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .stat-item .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }

        .stat-item .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* ===== Process ===== */
        .process-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            counter-reset: step;
        }

        .process-step {
            text-align: center;
            padding: 32px 20px;
            position: relative;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .process-step:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.3);
        }

        .process-step .step-icon {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 16px;
            margin-top: 8px;
        }

        .process-step h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
            transition: box-shadow 0.3s;
        }

        .faq-item:hover {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
        }

        .faq-question {
            width: 100%;
            background: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: rgba(30, 58, 95, 0.02);
        }

        .faq-question i {
            color: var(--accent);
            font-size: 0.9rem;
            flex-shrink: 0;
            transition: transform 0.3s;
        }

        .faq-question.open i {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }

        .faq-answer.open {
            padding: 0 24px 20px;
            max-height: 200px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid var(--border-soft);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 90px 0;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 39, 66, 0.92), rgba(30, 58, 95, 0.78));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--deepdark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            background: linear-gradient(135deg, var(--accent), #d97706);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.3s;
        }

        .footer-col ul a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.8;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 24px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .mobile-bottom-tab {
                display: flex;
            }

            .header-inner {
                height: 64px;
                justify-content: center;
            }

            .hero {
                padding: 80px 0 70px;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .hero-sub {
                font-size: 1rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-stats {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 20px;
            }

            .hero-stat + .hero-stat {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, 0.12);
            }

            .section {
                padding: 60px 0;
            }

            .section-head h2 {
                font-size: 1.7rem;
            }

            .feature-grid {
                grid-template-columns: 1fr;
            }

            .category-grid {
                grid-template-columns: 1fr;
            }

            .info-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-item {
                padding: 16px 12px;
            }

            .stat-item .stat-num {
                font-size: 1.8rem;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            body {
                padding-bottom: 56px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-badge {
                font-size: 0.78rem;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .hero-actions {
                width: 100%;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item .stat-num {
                font-size: 1.4rem;
            }

            .stat-item .stat-icon {
                font-size: 1.5rem;
            }

            .section-head h2 {
                font-size: 1.4rem;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 16px 18px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category1 */
/* ============ Design Tokens ============ */
        :root {
            --primary: #1e40af;
            --primary-dark: #172554;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --success: #10b981;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
            --transition: all .3s ease;
        }

        /* ============ Base Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ============ Container ============ */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ Site Header ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            color: #fff;
            border-radius: 12px;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .desktop-nav a {
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            padding: 8px 4px;
            position: relative;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .3s ease;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a:hover::after,
        .desktop-nav a.active::after {
            transform: scaleX(1);
        }
        .desktop-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #1e40af, #2563eb);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 22px;
            border-radius: 999px;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .header-cta:hover {
            box-shadow: 0 6px 24px rgba(30, 64, 175, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .header-cta:active {
            transform: translateY(0);
        }
        .header-cta:focus-visible {
            outline: 3px solid rgba(59, 130, 246, 0.5);
            outline-offset: 2px;
        }

        /* ============ Mobile Tab Bar ============ */
        .mobile-tabbar {
            display: none;
        }

        /* ============ Hero Section ============ */
        .hero-section {
            position: relative;
            padding: 160px 0 90px;
            background: linear-gradient(135deg, rgba(12, 26, 58, 0.92), rgba(23, 37, 84, 0.78)),
                url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg);
            clip-path: polygon(0 100%, 100% 100%, 100% 100%, 0 30%);
            opacity: 0.6;
        }
        .hero-content {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        .hero-badge i {
            color: #fbbf24;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            background: linear-gradient(120deg, #60a5fa, #a5b4fc);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            max-width: 620px;
            margin: 0 auto 32px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 36px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-tag i {
            color: #34d399;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            margin-bottom: 52px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 30px;
            border-radius: 999px;
            box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
            transition: var(--transition);
        }
        .btn-primary:hover {
            box-shadow: 0 8px 30px rgba(59, 130, 246, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(147, 197, 253, 0.5);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            padding: 11px 28px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            padding: 30px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            max-width: 860px;
            margin: 0 auto;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat .num i {
            font-size: 20px;
            color: #fbbf24;
            margin-right: 2px;
        }
        .hero-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ============ Section Common ============ */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            padding: 6px 16px;
            background: rgba(59, 130, 246, 0.08);
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }

        /* ============ Login Method Cards ============ */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .method-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(59, 130, 246, 0.3);
        }
        .method-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .method-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .method-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .method-card .card-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 50%, rgba(15, 23, 42, 0.35));
        }
        .method-icon {
            position: absolute;
            bottom: 16px;
            left: 20px;
            z-index: 2;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 6px 16px rgba(30, 64, 175, 0.35);
        }
        .method-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .method-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .method-body .desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .method-list {
            margin-bottom: 20px;
        }
        .method-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: #475569;
            padding: 4px 0;
        }
        .method-list li i {
            color: var(--success);
            font-size: 13px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .method-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .method-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .method-link:hover i {
            transform: translateX(2px);
        }
        .method-link i {
            transition: transform .3s ease;
        }

        /* ============ Process Timeline ============ */
        .process-section {
            background: #fff;
        }
        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(90deg, #e2e8f0, #93c5fd, #e2e8f0);
            z-index: 0;
        }
        .timeline-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 6px 20px rgba(30, 64, 175, 0.3);
            position: relative;
            z-index: 2;
            border: 3px solid #fff;
        }
        .timeline-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .timeline-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 200px;
            margin: 0 auto;
        }

        /* ============ Prep Section ============ */
        .prep-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .prep-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .prep-img img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .prep-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.06), transparent);
        }
        .prep-content h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .prep-content .prep-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .prep-list {
            display: grid;
            gap: 14px;
        }
        .prep-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 18px;
            transition: var(--transition);
        }
        .prep-list li:hover {
            box-shadow: var(--shadow);
            border-color: rgba(59, 130, 246, 0.25);
        }
        .prep-list .prep-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(16, 185, 129, 0.1);
            color: var(--success);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .prep-list .prep-text h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }
        .prep-list .prep-text p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ FAQ Section ============ */
        .faq-section {
            background: #fff;
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.3);
        }
        .faq-item.open {
            border-color: rgba(59, 130, 246, 0.45);
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            margin-top: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-item.open .faq-answer-inner {
            padding-top: 16px;
            border-top-color: rgba(226, 232, 240, 0.8);
        }

        /* ============ Security Section ============ */
        .security-section {
            padding: 90px 0;
            background: linear-gradient(135deg, #0c1a3a, #172554);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .security-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 360px;
            height: 360px;
            background: rgba(59, 130, 246, 0.15);
            border-radius: 50%;
            filter: blur(60px);
        }
        .security-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: rgba(16, 185, 129, 0.1);
            border-radius: 50%;
            filter: blur(60px);
        }
        .security-section .section-head {
            position: relative;
            z-index: 2;
        }
        .security-section .section-title {
            color: #fff;
        }
        .security-section .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }
        .security-section .section-eyebrow {
            background: rgba(255, 255, 255, 0.1);
            color: #93c5fd;
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
            max-width: 1000px;
            margin: 0 auto;
        }
        .security-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            transition: var(--transition);
        }
        .security-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(147, 197, 253, 0.4);
        }
        .security-card .sec-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(59, 130, 246, 0.2);
            color: #93c5fd;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .security-card h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .security-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            padding: 80px 0;
            position: relative;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-2.png') center center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            max-width: 1000px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(12px);
            padding: 48px 56px;
            border-radius: var(--radius-lg);
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 800;
            color: #0c1a3a;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .cta-inner p {
            font-size: 15px;
            color: rgba(12, 26, 58, 0.75);
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #0c1a3a;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 999px;
            transition: var(--transition);
            flex-shrink: 0;
            box-shadow: 0 6px 24px rgba(12, 26, 58, 0.25);
        }
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(12, 26, 58, 0.35);
            color: #fff;
        }
        .cta-btn:active {
            transform: translateY(0);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #0c1a3a;
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 30px;
        }
        .site-footer .logo {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 50px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-col ul {
            display: grid;
            gap: 12px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: #fff;
            gap: 10px;
        }
        .footer-col ul a i {
            font-size: 11px;
            color: #60a5fa;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.8;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 38px;
            }
            .method-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline {
                gap: 20px;
            }
            .timeline::before {
                left: 30px;
                right: 30px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .site-header {
                /* Keep visible on mobile, simple */
            }
            .header-inner {
                height: 64px;
            }
            .desktop-nav {
                display: none;
            }
            .header-cta {
                font-size: 13px;
                padding: 8px 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
                border-radius: 10px;
            }

            .hero-section {
                padding: 130px 0 70px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
                padding: 0 10px;
            }
            .hero-tags {
                gap: 8px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
                max-width: 300px;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                padding: 20px;
            }
            .hero-stat .num {
                font-size: 26px;
            }

            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 26px;
            }

            .method-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                max-width: 420px;
                margin: 0 auto;
            }

            .timeline {
                grid-template-columns: 1fr;
                gap: 28px;
                max-width: 320px;
            }
            .timeline::before {
                display: none;
            }
            .timeline-step {
                display: flex;
                align-items: flex-start;
                gap: 16px;
                text-align: left;
            }
            .timeline-step .step-num {
                margin: 0;
                flex-shrink: 0;
            }
            .timeline-step p {
                margin: 0;
                max-width: none;
            }

            .prep-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .prep-img img {
                height: 260px;
            }
            .prep-content h2 {
                font-size: 24px;
            }

            .faq-question {
                padding: 16px 16px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 13px;
            }

            .security-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .security-card {
                padding: 20px 14px;
            }

            .cta-inner {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
                gap: 24px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .cta-btn {
                padding: 12px 28px;
                font-size: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }

            /* Mobile tab bar */
            .mobile-tabbar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 200;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                border-top: 1px solid var(--border);
                box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.06);
                padding-bottom: env(safe-area-inset-bottom);
                height: 64px;
            }
            .mobile-tabbar .tab-item {
                flex: 1;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 4px;
                font-size: 11px;
                color: #64748b;
                transition: var(--transition);
            }
            .mobile-tabbar .tab-item i {
                font-size: 18px;
                transition: var(--transition);
            }
            .mobile-tabbar .tab-item.active {
                color: var(--primary);
            }
            .mobile-tabbar .tab-item.active i {
                color: var(--primary);
                transform: translateY(-2px);
            }
            .mobile-tabbar .tab-item:hover {
                color: var(--primary);
            }
            .mobile-tabbar .tab-item:focus-visible {
                outline: 2px solid rgba(59, 130, 246, 0.5);
                outline-offset: -2px;
                border-radius: 8px;
            }

            body {
                padding-bottom: 64px;
            }
            .site-footer {
                padding-bottom: calc(30px + 64px);
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 25px;
            }
            .hero-badge {
                font-size: 12px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-tag {
                font-size: 12px;
                padding: 4px 10px;
            }
            .hero-stats {
                gap: 14px;
            }
            .hero-stat .num {
                font-size: 22px;
            }
            .hero-stat .label {
                font-size: 12px;
            }
            .section-title {
                font-size: 23px;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .security-card {
                display: flex;
                align-items: center;
                text-align: left;
                gap: 14px;
                padding: 16px;
            }
            .security-card .sec-icon {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
            }
            .security-card h4 {
                margin-bottom: 2px;
            }
            .footer-grid {
                gap: 28px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
            }
            .logo {
                font-size: 17px;
            }
            .prep-list li {
                padding: 14px;
            }
        }

        @media (max-width: 400px) {
            .hero-content h1 {
                font-size: 22px;
            }
            .hero-subtitle {
                font-size: 13px;
            }
            .hero-stats {
                padding: 16px 10px;
            }
            .hero-stat .num {
                font-size: 19px;
            }
            .hero-stat .label {
                font-size: 11px;
            }
        }

/* roulang page: article */
/* ============ 设计变量 ============ */
        :root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --primary-light: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fffbeb;
            --ink: #0f172a;
            --ink-2: #334155;
            --ink-3: #64748b;
            --line: #e2e8f0;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 2px 20px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 14px 36px rgba(37, 99, 235, 0.12);
            --shadow-cta: 0 12px 28px rgba(37, 99, 235, 0.25);
        }

        /* ============ 基础 ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-page);
            color: var(--ink-2);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        summary {
            cursor: pointer;
        }
        :focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
            border-radius: 6px;
        }

        /* ============ 容器 ============ */
        .container {
            width: min(1200px, 100% - 2rem);
            margin-inline: auto;
        }

        /* ============ 站点头部 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.02em;
            line-height: 1;
            white-space: nowrap;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            border-radius: 13px;
            background: linear-gradient(135deg, var(--primary) 0%, #0ea5e9 100%);
            color: #fff;
            font-size: 1.15rem;
            box-shadow: 0 8px 22px rgba(37, 99, 235, 0.3);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .desktop-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.94rem;
            color: var(--ink-2);
            transition: all 0.22s ease;
        }
        .desktop-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .desktop-nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 18px rgba(37, 99, 235, 0.22);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: 999px;
            background: var(--ink);
            color: #fff;
            font-weight: 600;
            font-size: 0.94rem;
            line-height: 1;
            white-space: nowrap;
            transition: all 0.25s ease;
        }
        .header-cta:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(37, 99, 235, 0.3);
        }

        /* ============ 移动端底部标签 ============ */
        .mobile-bottom-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--line);
            padding: 8px 16px calc(8px + env(safe-area-inset-bottom));
            box-shadow: 0 -6px 24px rgba(15, 23, 42, 0.08);
        }
        .mobile-tab {
            flex: 1;
            max-width: 130px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 7px 12px;
            border-radius: 14px;
            color: var(--ink-3);
            font-size: 0.7rem;
            font-weight: 600;
            text-align: center;
            transition: all 0.2s ease;
        }
        .mobile-tab i {
            font-size: 1.2rem;
        }
        .mobile-tab.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-tab-cta {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
        }
        .mobile-tab-cta:hover {
            background: var(--primary-hover);
            color: #fff;
        }

        /* ============ 通用组件按钮 ============ */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 15px 30px;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            line-height: 1;
            box-shadow: var(--shadow-cta);
            transition: all 0.25s ease;
            border: none;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 18px 34px rgba(37, 99, 235, 0.35);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 15px 30px;
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, 0.45);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            line-height: 1;
            transition: all 0.25s ease;
            background: transparent;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            border: 1.5px solid var(--line);
            color: var(--ink-2);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.22s ease;
            background: #fff;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* ============ 区块头 ============ */
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .section-head.text-center {
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 8px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.3rem);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-top: 12px;
        }
        .section-desc {
            color: var(--ink-3);
            font-size: 1rem;
            margin-top: 10px;
            max-width: 560px;
        }

        /* ============ 页面主区块 ============ */
        .article-section {
            padding: 44px 0 72px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--ink-3);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--ink-3);
            padding: 4px 8px;
            border-radius: 6px;
            transition: all 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: #94a3b8;
        }
        .breadcrumb .current {
            color: var(--ink-2);
            font-weight: 600;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ============ 文章布局 ============ */
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 330px;
            gap: 32px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 44px;
        }
        .article-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin: 24px 0 28px;
            border: 1px solid var(--line);
        }
        .article-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-cover img:hover {
            transform: scale(1.02);
        }
        .article-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.35;
            letter-spacing: -0.02em;
            margin: 12px 0 18px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 4px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--line);
            font-size: 0.9rem;
            color: var(--ink-3);
        }
        .article-cat {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.82rem;
        }
        .article-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ============ 文章正文 ============ */
        .article-content {
            font-size: 1.04rem;
            line-height: 1.9;
            color: var(--ink-2);
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--ink);
            margin: 34px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            border-radius: 2px;
            line-height: 1.3;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--ink);
            margin: 26px 0 12px;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 1.4em;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(37, 99, 235, 0.3);
        }
        .article-content a:hover {
            color: var(--primary-hover);
            text-decoration-color: var(--primary);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 22px 0;
            border: 1px solid var(--line);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 18px 22px;
            margin: 22px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--ink-2);
            font-style: normal;
        }
        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        /* ============ 内容未找到 ============ */
        .article-empty {
            text-align: center;
            padding: 70px 20px;
        }
        .article-empty-icon {
            font-size: 4.2rem;
            color: #cbd5e1;
            margin-bottom: 22px;
        }
        .article-empty h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .article-empty p {
            color: var(--ink-3);
            margin-bottom: 28px;
        }

        /* ============ 侧边栏 ============ */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 22px;
            position: sticky;
            top: 96px;
        }
        .side-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 24px;
        }
        .side-card h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 9px;
        }
        .side-card p {
            font-size: 0.92rem;
            color: var(--ink-3);
            line-height: 1.7;
        }
        .side-card .btn-primary {
            width: 100%;
            margin-top: 16px;
            padding: 13px 20px;
            font-size: 0.94rem;
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: 999px;
            background: #f1f5f9;
            color: var(--ink-2);
            font-size: 0.84rem;
            font-weight: 600;
            transition: all 0.2s ease;
        }
        .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .side-cta {
            background: linear-gradient(135deg, #eff6ff 0%, #eef2ff 100%);
            border-color: #dbeafe;
        }
        .side-cta h3 {
            color: var(--primary);
        }
        .side-cta p {
            color: var(--ink-2);
        }

        /* ============ 登录流程 ============ */
        .steps-section {
            position: relative;
            padding: 76px 0;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            overflow: hidden;
        }
        .steps-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        .steps-section .section-tag {
            background: rgba(255, 255, 255, 0.14);
            color: #bfdbfe;
        }
        .steps-section .section-title {
            color: #fff;
        }
        .steps-section .section-desc {
            color: #bfdbfe;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
            position: relative;
            z-index: 1;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 34px 28px;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.28);
        }
        .step-num {
            font-size: 0.8rem;
            font-weight: 800;
            letter-spacing: 0.2em;
            color: #60a5fa;
            margin-bottom: 14px;
        }
        .step-icon {
            width: 50px;
            height: 50px;
            display: grid;
            place-items: center;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 18px;
            border: 1px solid rgba(255, 255, 255, 0.16);
        }
        .step-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            line-height: 1.65;
            color: rgba(226, 232, 240, 0.82);
        }

        /* ============ 相关推荐 ============ */
        .related-section {
            padding: 76px 0;
            background: #fff;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .related-card {
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .related-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: #bfdbfe;
        }
        .related-card > a {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .related-img {
            overflow: hidden;
            border-radius: 0;
        }
        .related-img img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-img img {
            transform: scale(1.04);
        }
        .related-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 13px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 700;
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .related-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.45;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }
        .related-card:hover .related-body h3 {
            color: var(--primary);
        }
        .related-body p {
            font-size: 0.89rem;
            color: var(--ink-3);
            line-height: 1.65;
            flex: 1;
        }
        .related-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 0.86rem;
            font-weight: 600;
            color: var(--primary);
        }
        .related-more i {
            transition: transform 0.2s ease;
        }
        .related-card:hover .related-more i {
            transform: translateX(4px);
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 76px 0;
            background: var(--bg-page);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .faq-card[open] {
            border-color: #bfdbfe;
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.08);
        }
        .faq-card summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 26px;
            font-weight: 700;
            color: var(--ink);
            font-size: 1.02rem;
            line-height: 1.4;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .faq-card summary::-webkit-details-marker {
            display: none;
        }
        .faq-card summary:hover {
            background: #f8fafc;
        }
        .faq-card summary .fa-chevron-down {
            font-size: 0.85rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-card[open] summary .fa-chevron-down {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 26px 24px;
            color: var(--ink-3);
            font-size: 0.94rem;
            line-height: 1.75;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ============ CTA ============ */
        .cta-section {
            position: relative;
            padding: 88px 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-attachment: fixed;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 58, 138, 0.82) 100%);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #bfdbfe;
            font-size: 0.84rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
        }
        .cta-inner h2 {
            font-size: clamp(1.9rem, 4vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 1.05rem;
            color: rgba(226, 232, 240, 0.9);
            margin-bottom: 32px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 0;
            font-size: 0.94rem;
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.75;
            margin-top: 12px;
            max-width: 340px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .footer-col a {
            color: #94a3b8;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col a:hover {
            color: #60a5fa;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 26px 0;
            margin-top: 52px;
            text-align: center;
            font-size: 0.86rem;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .steps-grid,
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .container {
                width: min(100% - 1.2rem, 100%);
            }
            .header-inner {
                height: 64px;
            }
            .desktop-nav {
                display: none;
            }
            .header-cta {
                padding: 9px 16px;
                font-size: 0.86rem;
            }
            .logo {
                font-size: 1.16rem;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
                border-radius: 11px;
            }
            .mobile-bottom-tabs {
                display: flex;
                justify-content: center;
                gap: 10px;
            }
            body {
                padding-bottom: 78px;
            }
            .article-section {
                padding: 28px 0 56px;
            }
            .article-main {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-title {
                font-size: 1.35rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-section {
                padding: 60px 0;
            }
            .steps-grid,
            .related-grid {
                grid-template-columns: 1fr;
            }
            .faq-section {
                padding: 60px 0;
            }
            .cta-section {
                padding: 68px 0;
                background-attachment: scroll;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                margin-top: 36px;
            }
        }
        @media (max-width: 520px) {
            .header-cta span.cta-text {
                display: none;
            }
            .header-cta {
                padding: 10px 14px;
            }
            .mobile-tab {
                max-width: 110px;
                padding: 6px 8px;
                font-size: 0.66rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .article-content {
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
        }