/* roulang page: index */
:root {
            --primary: #0f2c59;
            --primary-light: #1e4a8a;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --cyan: #0ea5e9;
            --bg: #f8fafc;
            --bg-dark: #0b1120;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --card-bg: #ffffff;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.14);
            --spacing: 90px;
            --spacing-sm: 50px;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--primary-light);
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding: var(--spacing) 0;
            position: relative;
        }

        .section-head {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-head .tag {
            display: inline-block;
            background: rgba(14, 165, 233, 0.1);
            color: var(--cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-head p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
        }

        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 12px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            justify-content: center;
        }

        .btn-custom i {
            font-size: 14px;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            box-shadow: 0 8px 24px rgba(15, 44, 89, 0.3);
        }

        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(15, 44, 89, 0.4);
            color: #fff;
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(15, 44, 89, 0.2);
        }

        .btn-accent-custom {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
        }

        .btn-accent-custom:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.4);
        }

        /* Header */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
            box-shadow: 0 2px 20px rgba(15, 23, 42, 0.04);
        }

        .site-header .navbar {
            padding-top: 16px;
            padding-bottom: 16px;
        }

        .site-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .site-brand i {
            color: var(--accent);
            font-size: 26px;
        }

        .site-brand:hover {
            color: var(--primary);
        }

        .navbar-nav {
            gap: 4px;
            align-items: center;
        }

        .navbar-nav .nav-link {
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 50px;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 44, 89, 0.05);
        }

        .navbar-nav .nav-link.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(15, 44, 89, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            padding: 9px 24px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(245, 158, 11, 0.35);
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 8px 12px;
            background: #fff;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(11, 17, 32, 0.92) 0%, rgba(15, 44, 89, 0.85) 60%, rgba(30, 74, 138, 0.7) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 120px 0 100px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

        .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, 0.25);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            color: #f1f5f9;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

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

        .hero h1 {
            font-size: clamp(38px, 6vw, 62px);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
            max-width: 720px;
        }

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

        .hero p.lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin-bottom: 36px;
            line-height: 1.8;
        }

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

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            flex-wrap: wrap;
        }

        .hero-stats .stat {
            text-align: left;
        }

        .hero-stats .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stats .stat-num i {
            color: var(--accent);
            font-size: 24px;
            margin-right: 4px;
        }

        .hero-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
            letter-spacing: 2px;
            text-transform: uppercase;
            z-index: 2;
            transition: var(--transition);
        }

        .hero-scroll i {
            font-size: 18px;
            margin-top: 4px;
            animation: bounceDown 2s infinite;
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(6px);
            }
        }

        /* About / Core */
        .about-section {
            background: #fff;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .about-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 17, 32, 0.3), transparent);
        }

        .about-content .tag {
            display: inline-block;
            background: rgba(14, 165, 233, 0.1);
            color: var(--cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .about-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 18px;
            line-height: 1.2;
        }

        .about-content p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .about-list {
            list-style: none;
            padding: 0;
            margin: 0 0 30px;
        }

        .about-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 14px;
            font-size: 15px;
            color: var(--text);
        }

        .about-list li i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
        }

        /* Categories */
        .categories-section {
            background: var(--bg);
        }

        .category-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 40px 30px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--cyan));
            opacity: 0;
            transition: var(--transition);
        }

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

        .category-card:hover::before {
            opacity: 1;
        }

        .category-icon {
            width: 70px;
            height: 70px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 28px;
            color: #fff;
        }

        .category-card:nth-child(1) .category-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }

        .category-card:nth-child(2) .category-icon {
            background: linear-gradient(135deg, var(--cyan), #38bdf8);
        }

        .category-card:nth-child(3) .category-icon {
            background: linear-gradient(135deg, var(--accent), #fbbf24);
        }

        .category-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }

        .category-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* Latest News */
        .news-section {
            background: #fff;
        }

        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .news-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 30px;
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateX(4px);
            background: #fff;
        }

        .news-badge {
            flex-shrink: 0;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-top: 4px;
        }

        .news-content {
            flex: 1;
        }

        .news-content h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-content h3 a {
            color: var(--text);
        }

        .news-content h3 a:hover {
            color: var(--primary);
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .news-meta {
            display: flex;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-meta i {
            font-size: 12px;
            margin-right: 4px;
            color: var(--accent);
        }

        .news-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 16px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* Stats */
        .stats-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
            padding: var(--spacing) 0;
            color: #fff;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stat-card {
            padding: 30px 20px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(4px);
        }

        .stat-card i {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .stat-card .num {
            font-size: 40px;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 10px;
        }

        .stat-card .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Content Cards */
        .content-section {
            background: var(--bg);
        }

        .content-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }

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

        .content-card .card-img {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .content-card:hover .card-img img {
            transform: scale(1.06);
        }

        .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 44, 89, 0.9);
            color: #fff;
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            z-index: 2;
            backdrop-filter: blur(4px);
        }

        .card-body {
            padding: 24px;
        }

        .card-body h5 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            color: var(--primary);
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .card-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-more:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* Process */
        .process-section {
            background: #fff;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
            z-index: 0;
        }

        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-num {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 26px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 10px 24px rgba(15, 44, 89, 0.25);
            border: 5px solid #fff;
        }

        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
        }

        .faq-accordion .accordion-button {
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: #fff;
            border: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary);
            color: #fff;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

        .faq-accordion .accordion-button::after {
            filter: none;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1a3a6e 100%);
            padding: var(--spacing) 0;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.1);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(14, 165, 233, 0.1);
        }

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

        .cta-section h2 {
            font-size: clamp(32px, 5vw, 44px);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 30px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #94a3b8;
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

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

        .footer-brand .site-brand i {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-links h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-links a i {
            font-size: 10px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        .footer-bottom a {
            color: #94a3b8;
        }

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

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                padding: 20px;
                border-radius: 16px;
                margin-top: 12px;
                box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
            }

            .navbar-nav {
                align-items: stretch;
            }

            .navbar-nav .nav-link {
                border-radius: 10px;
            }

            .nav-cta {
                margin-top: 10px;
                justify-content: center;
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

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

            .process-steps::before {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 767.98px) {
            section {
                padding: 50px 0;
            }

            .hero {
                padding: 80px 0 80px;
                min-height: auto;
            }

            .hero h1 {
                font-size: 34px;
            }

            .hero p.lead {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn-custom {
                width: 100%;
            }

            .hero-stats {
                gap: 24px;
            }

            .news-item {
                flex-direction: column;
                gap: 10px;
            }

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

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

            .section-head h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 575.98px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .site-brand {
                font-size: 20px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .category-card {
                padding: 28px 20px;
            }

            .news-item {
                padding: 20px;
            }

            .news-meta {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: article */
:root {
    --primary: #4f6ef7;
    --primary-dark: #3853c9;
    --primary-light: #edf1ff;
    --accent: #f0a63a;
    --accent-light: #fff3e2;
    --bg: #f7f8fc;
    --bg-deep: #101c36;
    --bg-card: #ffffff;
    --text: #1e2a3a;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e4e8f0;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 12px rgba(30, 42, 58, 0.06);
    --shadow-md: 0 6px 28px rgba(30, 42, 58, 0.08);
    --shadow-lg: 0 16px 48px rgba(30, 42, 58, 0.12);
    --spacer-section: 80px;
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all .3s ease;
}

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

.container {
    max-width: 1200px;
}

.btn {
    border-radius: 50px;
    padding: .65rem 1.6rem;
    font-weight: 600;
    font-size: .95rem;
    border: none;
    transition: all .3s ease;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 110, 247, .35);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 110, 247, .4);
    color: #fff;
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, .8);
    color: #fff;
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, .2);
    color: #fff;
    transform: translateY(-2px);
}

/* ===== Header ===== */
.site-header {
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(228, 232, 240, .7);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(30, 42, 58, .05);
}

.site-header .navbar {
    padding: 14px 0;
}

.site-brand {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: .55rem;
    letter-spacing: .5px;
}

.site-brand i {
    color: var(--primary);
    font-size: 1.5rem;
    background: var(--primary-light);
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transition: transform .3s ease;
}

.site-brand:hover i {
    transform: rotate(20deg);
}

.navbar .navbar-nav {
    gap: .1rem;
}

.navbar .nav-link {
    color: var(--text-light);
    font-weight: 600;
    font-size: .94rem;
    padding: .5rem 1.1rem !important;
    border-radius: 50px;
    transition: all .3s ease;
}

.navbar .nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.navbar .nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 700;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    background: linear-gradient(135deg, var(--primary), #6d8dff);
    color: #fff !important;
    padding: .55rem 1.4rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: .9rem;
    box-shadow: 0 4px 16px rgba(79, 110, 247, .3);
    transition: all .3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 110, 247, .42);
    color: #fff;
}

.navbar-toggler {
    border: none;
    color: var(--text);
    padding: .4rem .7rem;
}

.navbar-toggler i {
    font-size: 1.4rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

/* ===== 面包屑 ===== */
.breadcrumb-sec {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}

.breadcrumb-sec .breadcrumb {
    margin: 0;
    font-size: .9rem;
}

.breadcrumb-sec .breadcrumb-item a {
    color: var(--text-light);
    font-weight: 500;
}

.breadcrumb-sec .breadcrumb-item a:hover {
    color: var(--primary);
}

.breadcrumb-sec .breadcrumb-item.active {
    color: var(--text);
    font-weight: 600;
    max-width: 280px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.breadcrumb-sec .breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
}

/* ===== 文章 Hero ===== */
.article-hero {
    position: relative;
    padding: 70px 0 100px;
    background: var(--bg-deep);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: .55;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(16, 28, 54, .88) 0%, rgba(16, 28, 54, .7) 50%, rgba(79, 110, 247, .55) 100%);
}

.article-hero .container {
    position: relative;
    z-index: 2;
    max-width: 950px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    background: rgba(255, 255, 255, .15);
    backdrop-filter: blur(8px);
    color: #fff;
    font-size: .85rem;
    font-weight: 600;
    padding: .35rem 1.1rem;
    border-radius: 50px;
    margin-bottom: 1.3rem;
    border: 1px solid rgba(255, 255, 255, .25);
}

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

.article-hero h1 {
    color: #fff;
    font-weight: 800;
    font-size: 2.2rem;
    line-height: 1.35;
    margin-bottom: 1.1rem;
    letter-spacing: .5px;
}

.article-meta-line {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem 1.5rem;
    color: rgba(255, 255, 255, .85);
    font-size: .9rem;
}

.article-meta-line span {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
}

.article-meta-line i {
    color: rgba(255, 255, 255, .7);
}

/* ===== 正文卡片 ===== */
.article-main {
    padding: 0 0 var(--spacer-section);
}

.article-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-top: -56px;
    position: relative;
    z-index: 3;
    overflow: hidden;
    border: 1px solid rgba(228, 232, 240, .7);
}

.article-cover {
    width: 100%;
    height: auto;
    max-height: 430px;
    object-fit: cover;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.article-content {
    padding: 2.5rem 3rem;
    font-size: 1.05rem;
    line-height: 1.9;
    color: #334155;
}

.article-content > * + * {
    margin-top: 1.2rem;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
    font-weight: 700;
    color: var(--text);
    margin-top: 1.8rem;
    line-height: 1.4;
}

.article-content h2 {
    font-size: 1.55rem;
    padding-bottom: .6rem;
    border-bottom: 2px solid var(--primary-light);
}

.article-content h3 {
    font-size: 1.25rem;
}

.article-content p {
    margin-bottom: 1.1rem;
}

.article-content ul,
.article-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.1rem;
}

.article-content ul li,
.article-content ol li {
    margin-bottom: .4rem;
}

.article-content a {
    color: var(--primary);
    font-weight: 600;
    border-bottom: 1px solid rgba(79, 110, 247, .3);
}

.article-content a:hover {
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.article-content blockquote {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 1.2rem 1.5rem;
    color: var(--text);
    font-style: italic;
    margin: 1.6rem 0;
}

.article-content img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: .7rem 1rem;
    text-align: left;
}

.article-content th {
    background: var(--primary-light);
    font-weight: 600;
}

/* 标签区 */
.article-tags {
    padding: 1.4rem 3rem 2.2rem;
    border-top: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    align-items: center;
}

.tags-label {
    font-weight: 700;
    color: var(--text);
    font-size: .9rem;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
}

.article-tag {
    background: var(--bg);
    color: var(--text-light);
    font-size: .82rem;
    font-weight: 500;
    padding: .35rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--border);
    transition: all .3s ease;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}

.article-tag:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: rgba(79, 110, 247, .3);
}

/* 未找到 */
.not-found-box {
    padding: 6rem 2rem;
    text-align: center;
    background: var(--bg);
    border-radius: var(--radius-lg);
}

.not-found-box i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    display: block;
}

.not-found-box h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: .6rem;
}

.not-found-box p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: var(--spacer-section) 0 50px;
    background: linear-gradient(180deg, var(--bg) 0%, #f0f2f9 100%);
}

.related-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.related-header h2 {
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: .3rem;
}

.related-header p {
    color: var(--text-light);
    font-size: 1rem;
}

.news-card {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: block;
    height: 100%;
    transition: all .35s ease;
    border: 1px solid rgba(228, 232, 240, .6);
}

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

.news-cover {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.news-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.news-card:hover .news-cover img {
    transform: scale(1.06);
}

.news-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(16, 28, 54, .3), transparent);
}

.news-info {
    padding: 1.3rem 1.4rem 1.5rem;
}

.news-info h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: .5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-info p {
    font-size: .88rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: .8rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    font-size: .8rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: .4rem;
}

/* ===== CTA ===== */
.cta-section {
    padding: 0 0 70px;
    background: #f0f2f9;
}

.cta-box {
    background: linear-gradient(135deg, #1e2f5e 0%, #3853c9 60%, #5f7cf7 100%);
    border-radius: var(--radius-lg);
    padding: 3.5rem 3rem;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -40px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}

.cta-box::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -30px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .05);
}

.cta-box h2 {
    font-size: 1.9rem;
    font-weight: 800;
    margin-bottom: .6rem;
    position: relative;
    z-index: 1;
}

.cta-box p {
    color: rgba(255, 255, 255, .85);
    font-size: 1.05rem;
    margin-bottom: 1.8rem;
    position: relative;
    z-index: 1;
}

.cta-box .btn-group {
    gap: .8rem;
    position: relative;
    z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    color: rgba(255, 255, 255, .75);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .site-brand {
    color: #fff;
    margin-bottom: 1.1rem;
}

.footer-brand .site-brand i {
    background: rgba(255, 255, 255, .1);
    color: var(--accent);
}

.footer-brand p {
    font-size: .92rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, .6);
    max-width: 340px;
}

.footer-links h5 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.1rem;
}

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

.footer-links ul li {
    margin-bottom: .55rem;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, .6);
    font-size: .9rem;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    transition: all .3s ease;
}

.footer-links ul li a i {
    font-size: .7rem;
    color: rgba(255, 255, 255, .35);
}

.footer-links ul li a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    padding: 1.4rem 0;
    text-align: center;
    font-size: .85rem;
    color: rgba(255, 255, 255, .45);
}

.footer-bottom a {
    color: rgba(255, 255, 255, .65);
    transition: color .3s ease;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    :root {
        --spacer-section: 60px;
    }

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

    .footer-brand p {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --spacer-section: 50px;
    }

    .article-hero {
        padding: 45px 0 80px;
    }

    .article-hero h1 {
        font-size: 1.6rem;
    }

    .article-card {
        margin-top: -40px;
    }

    .article-content {
        padding: 1.8rem 1.4rem;
        font-size: 1rem;
    }

    .article-tags {
        padding: 1.2rem 1.4rem 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cta-box {
        padding: 2.5rem 1.5rem;
    }

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

    .navbar-collapse {
        background: #fff;
        border-radius: var(--radius-md);
        padding: 1rem 1.2rem;
        margin-top: .6rem;
        box-shadow: var(--shadow-md);
    }

    .navbar .nav-link {
        padding: .6rem 1rem !important;
    }

    .nav-cta {
        margin-top: .6rem;
        margin-left: 0 !important;
        justify-content: center;
        width: 100%;
    }
}

@media (max-width: 520px) {
    .breadcrumb-sec .breadcrumb-item.active {
        max-width: 170px;
    }

    .article-hero h1 {
        font-size: 1.35rem;
    }

    .article-meta-line {
        gap: .4rem .9rem;
        font-size: .82rem;
    }

    .news-cover {
        height: 150px;
    }

    .cta-box .btn-group {
        flex-direction: column;
        align-items: center;
    }
}

/* roulang page: category1 */
:root {
  --primary: #2a6df4;
  --primary-dark: #1e4fd6;
  --primary-light: #eaf1fe;
  --accent: #02c39a;
  --accent-dark: #019b7a;
  --accent-light: #e6faf5;
  --dark-bg: #0b1a2e;
  --dark-bg-2: #10233d;
  --body-bg: #f8fafd;
  --text-main: #16233a;
  --text-body: #47536b;
  --text-muted: #8494ab;
  --text-light: #b6c3d9;
  --border-color: #e6eaf2;
  --card-bg: #ffffff;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(16, 35, 61, 0.06);
  --shadow-md: 0 8px 30px rgba(16, 35, 61, 0.09);
  --shadow-lg: 0 18px 50px rgba(16, 35, 61, 0.14);
  --section-gap: 88px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--body-bg);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: all 0.25s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
h1, h2, h3, h4, h5 { color: var(--text-main); font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); margin-bottom: 18px; }
h3 { font-size: 1.25rem; }
p { color: var(--text-body); }
.btn-brand {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: 50px;
  background: var(--primary); color: #fff; border: none;
  font-weight: 600; transition: all 0.3s ease;
  box-shadow: 0 6px 20px rgba(42, 109, 244, 0.25);
}
.btn-brand:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 30px rgba(42, 109, 244, 0.32); }
.btn-outline-brand {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 24px; border-radius: 50px;
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary); font-weight: 600; transition: all 0.3s ease;
}
.btn-outline-brand:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 50px;
  background: rgba(255,255,255,0.12); color: #fff;
  border: 1px solid rgba(255,255,255,0.25); font-weight: 600;
  transition: all 0.3s ease; backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.22); color: #fff; transform: translateY(-2px); }
.badge-soft {
  display: inline-block; padding: 6px 14px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
  background: var(--primary-light); color: var(--primary); letter-spacing: 0.02em;
}
.badge-accent {
  display: inline-block; padding: 6px 14px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
  background: var(--accent-light); color: var(--accent-dark);
}
.badge-warn {
  display: inline-block; padding: 6px 14px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
  background: #fff5e6; color: #d67900;
}
.site-header {
  position: sticky; top: 0; z-index: 1050;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(230,234,242,0.7);
  box-shadow: 0 2px 20px rgba(16,35,61,0.04);
}
.site-header .navbar { padding: 14px 0; }
.site-brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 1.45rem; font-weight: 800;
  color: var(--text-main); letter-spacing: -0.02em;
}
.site-brand i {
  color: var(--primary); font-size: 1.5rem;
  background: var(--primary-light); width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px;
}
.site-header .navbar-nav { gap: 4px; }
.site-header .nav-link {
  color: var(--text-body); font-weight: 600; font-size: 15px;
  padding: 9px 18px !important; border-radius: 50px;
  transition: all 0.25s ease;
}
.site-header .nav-link:hover { color: var(--primary); background: var(--primary-light); }
.site-header .nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 700; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 50px;
  background: var(--primary); color: #fff !important;
  font-weight: 600; font-size: 14px; white-space: nowrap;
  transition: all 0.3s ease; box-shadow: 0 6px 18px rgba(42,109,244,0.25);
}
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); color: #fff; }
.navbar-toggler {
  border: none; background: var(--primary-light); color: var(--primary);
  width: 44px; height: 44px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.navbar-toggler:focus { box-shadow: none; }
.category-banner {
  position: relative; padding: 110px 0 90px;
  background: linear-gradient(135deg, #0b1a2e 0%, #10233d 60%, #1a3050 100%);
  overflow: hidden;
}
.category-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center; opacity: 0.16;
}
.category-banner::after {
  content: ""; position: absolute; top: -120px; right: -120px;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(42,109,244,0.35), transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.category-banner .container { position: relative; z-index: 2; }
.category-banner .banner-sub {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 50px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.18);
  color: #dfe8f6; font-size: 14px; font-weight: 600; backdrop-filter: blur(8px);
}
.category-banner .banner-sub i { color: #ffc25e; }
.category-banner h1 { color: #fff; margin: 22px 0 16px; }
.category-banner .lead { color: var(--text-light); font-size: 1.1rem; max-width: 640px; margin-bottom: 30px; }
.breadcrumb-custom {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 14px; color: var(--text-muted); margin-bottom: 18px;
}
.breadcrumb-custom a { color: rgba(255,255,255,0.7); }
.breadcrumb-custom a:hover { color: #fff; }
.breadcrumb-custom i { font-size: 12px; color: rgba(255,255,255,0.4); }
.section-block { padding: var(--section-gap) 0; }
.section-block.alt { background: #f0f4fa; }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .section-tag {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--primary); font-weight: 700; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px;
}
.section-head .section-tag::before {
  content: ""; width: 22px; height: 2px;
  background: var(--primary); border-radius: 2px;
}
.section-head.center .section-tag::after {
  content: ""; width: 22px; height: 2px;
  background: var(--primary); border-radius: 2px;
}
.section-head h2 { margin-bottom: 12px; }
.section-head p { margin-bottom: 0; }
.entry-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.entry-card {
  background: var(--card-bg); border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm); transition: all 0.35s ease;
  display: flex; flex-direction: column;
}
.entry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #cfdaf0; }
.entry-card .card-img { position: relative; height: 200px; overflow: hidden; }
.entry-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.entry-card:hover .card-img img { transform: scale(1.05); }
.entry-card .card-img .img-badge { position: absolute; top: 14px; left: 14px; }
.entry-card .card-body { padding: 26px; display: flex; flex-direction: column; flex: 1; }
.entry-card .card-body h3 { font-size: 1.12rem; margin-bottom: 10px; line-height: 1.4; }
.entry-card .card-body h3 a { color: var(--text-main); }
.entry-card .card-body h3 a:hover { color: var(--primary); }
.entry-card .card-body p { font-size: 14.5px; color: var(--text-body); margin-bottom: 16px; flex: 1; }
.card-meta {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; border-top: 1px solid var(--border-color);
  font-size: 13px; color: var(--text-muted);
}
.card-meta .card-link { color: var(--primary); font-weight: 600; }
.steps-section { background: var(--dark-bg); position: relative; overflow: hidden; }
.steps-section::before {
  content: ""; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center; opacity: 0.08;
}
.steps-section .container { position: relative; z-index: 1; }
.steps-section .section-head h2 { color: #fff; }
.steps-section .section-head p { color: var(--text-light); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-node {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg); padding: 32px 24px; text-align: center;
  transition: all 0.3s ease; backdrop-filter: blur(6px);
}
.step-node:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(42,109,244,0.4);
  transform: translateY(-4px);
}
.step-node .step-num {
  width: 56px; height: 56px; margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #5b8def);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 800; color: #fff;
  box-shadow: 0 8px 25px rgba(42,109,244,0.35);
}
.step-node h4 { color: #fff; font-size: 1.05rem; margin-bottom: 12px; }
.step-node p { color: var(--text-light); font-size: 14px; margin-bottom: 0; }
.stats-band {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 60px 0; border-radius: var(--radius-lg); position: relative; overflow: hidden;
}
.stats-band::before {
  content: ""; position: absolute; top: 0; right: 0;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.15), transparent 70%);
  border-radius: 50%;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; position: relative; z-index: 1; }
.stat-item { text-align: center; color: #fff; }
.stat-item .stat-num { font-size: 2.6rem; font-weight: 800; line-height: 1.2; }
.stat-item .stat-label { font-size: 14px; opacity: 0.85; margin-top: 4px; }
.notice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.notice-item {
  display: flex; gap: 16px;
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 24px; border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm); transition: all 0.3s ease;
}
.notice-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.notice-item .notice-icon {
  flex-shrink: 0; width: 46px; height: 46px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
}
.notice-item .notice-icon.warn { background: #fff5e6; color: #d67900; }
.notice-item .notice-icon.success { background: var(--accent-light); color: var(--accent-dark); }
.notice-item h4 { font-size: 1rem; margin-bottom: 6px; }
.notice-item p { font-size: 14px; margin-bottom: 0; }
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 26px 30px;
  margin-bottom: 16px; box-shadow: var(--shadow-sm); transition: all 0.3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item h4 {
  font-size: 1.05rem; margin-bottom: 10px;
  display: flex; align-items: center; gap: 10px; cursor: pointer;
}
.faq-item h4::before { content: "#"; color: var(--primary); font-weight: 800; font-size: 1.1rem; }
.faq-item p { margin-bottom: 0; font-size: 15px; }
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, #0b1a2e, #1a3050);
  border-radius: var(--radius-lg); position: relative; overflow: hidden; text-align: center;
}
.cta-section::before {
  content: ""; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover; background-position: center; opacity: 0.12;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: #fff; max-width: 620px; margin: 0 auto 16px; }
.cta-section p { color: var(--text-light); max-width: 540px; margin: 0 auto 30px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.site-footer { background: #0a1627; padding: 64px 0 0; margin-top: var(--section-gap); }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px; padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p {
  color: rgba(255,255,255,0.6); font-size: 14.5px;
  margin: 18px 0 0; max-width: 360px; line-height: 1.8;
}
.site-footer .site-brand { color: #fff; }
.footer-links h5 { color: #fff; font-size: 15px; margin-bottom: 18px; letter-spacing: 0.03em; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a {
  color: rgba(255,255,255,0.6); font-size: 14px;
  transition: all 0.25s ease; display: inline-flex; align-items: center; gap: 6px;
}
.footer-links ul li a i { font-size: 11px; transition: transform 0.25s ease; }
.footer-links ul li a:hover { color: #fff; padding-left: 4px; }
.footer-links ul li a:hover i { transform: translateX(3px); }
.footer-bottom { padding: 22px 0; text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.45); font-size: 13.5px; margin-bottom: 0; }
.footer-bottom a { color: rgba(255,255,255,0.7); }
.footer-bottom a:hover { color: #fff; }
@media (max-width: 991.98px) {
  .site-header .navbar-collapse {
    background: #fff; border-radius: var(--radius-md);
    box-shadow: var(--shadow-md); padding: 18px;
    margin-top: 12px; border: 1px solid var(--border-color);
  }
  .site-header .navbar-nav { gap: 2px; }
  .site-header .nav-link { border-radius: var(--radius-sm); }
  .nav-cta { margin-top: 10px; justify-content: center; }
  .entry-card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767.98px) {
  :root { --section-gap: 60px; }
  .category-banner { padding: 80px 0 60px; }
  .entry-card-grid { grid-template-columns: 1fr; }
  .notice-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .step-node { padding: 24px 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .breadcrumb-custom { font-size: 13px; }
}
@media (max-width: 520px) {
  .category-banner h1 { font-size: 1.7rem; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { gap: 18px; }
  .stat-item .stat-num { font-size: 2rem; }
  .section-head { margin-bottom: 32px; }
  .faq-item { padding: 20px; }
  .cta-actions .btn-brand, .cta-actions .btn-ghost { width: 100%; justify-content: center; }
}

/* roulang page: category2 */
:root {
            --primary: #1B2A4A;
            --primary-light: #2C3E6B;
            --primary-deep: #0F1830;
            --accent: #F08A3C;
            --accent-hover: #d9772c;
            --accent-light: #FFB37C;
            --bg: #F5F7FB;
            --bg-deep: #0B1122;
            --text: #1E2A3A;
            --text-light: #6B7A90;
            --border: #E4E9F2;
            --card-bg: #FFFFFF;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(27, 42, 74, .08);
            --shadow-hover: 0 16px 40px rgba(27, 42, 74, .14);
            --transition: all .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        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;
        }

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

        a:hover {
            color: var(--accent);
        }

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 576px) {
            .container {
                max-width: 540px;
            }
        }

        @media (min-width: 768px) {
            .container {
                max-width: 740px;
            }
        }

        @media (min-width: 992px) {
            .container {
                max-width: 960px;
            }
        }

        @media (min-width: 1200px) {
            .container {
                max-width: 1140px;
            }
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1240px;
            }
        }

        .section-head {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: rgba(240, 138, 60, .12);
            color: var(--accent-hover);
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 6px 18px;
            border-radius: 50rem;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(228, 233, 242, .8);
            box-shadow: 0 4px 24px rgba(15, 24, 48, .04);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .site-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: .2px;
        }

        .site-brand i {
            color: var(--accent);
            font-size: 1.4rem;
        }

        .site-brand:hover {
            color: var(--primary);
        }

        .navbar-nav {
            gap: 4px;
            align-items: center;
        }

        .navbar-nav .nav-link {
            font-size: .95rem;
            font-weight: 500;
            color: var(--text);
            padding: 8px 18px;
            border-radius: 50rem;
            transition: var(--transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            background: rgba(27, 42, 74, .06);
            color: var(--primary);
        }

        .navbar-nav .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(27, 42, 74, .25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: .92rem;
            padding: 10px 22px;
            border-radius: 50rem;
            box-shadow: 0 6px 20px rgba(240, 138, 60, .32);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(240, 138, 60, .4);
        }

        .navbar-toggler {
            border: none;
            color: var(--primary);
            font-size: 1.4rem;
            padding: 4px 10px;
            outline: none;
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 55%, var(--primary-light) 100%);
            overflow: hidden;
            color: #fff;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .18;
            z-index: 0;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            bottom: -80px;
            right: -40px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 138, 60, .3) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

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

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .14);
            padding: 6px 16px;
            border-radius: 50rem;
            font-size: .85rem;
            margin-bottom: 24px;
            color: rgba(255, 255, 255, .85);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--accent-light);
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: 1px;
            line-height: 1.25;
        }

        .page-banner p.lead {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, .88);
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .banner-actions .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            border-radius: 50rem;
            padding: 12px 28px;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(240, 138, 60, .35);
            transition: var(--transition);
        }

        .banner-actions .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(240, 138, 60, .45);
        }

        .banner-actions .btn-outline-light {
            border-radius: 50rem;
            padding: 12px 28px;
            font-weight: 600;
            border-width: 2px;
            transition: var(--transition);
        }

        .banner-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-2px);
        }

        .banner-meta {
            display: flex;
            gap: 26px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .78);
        }

        .banner-meta i {
            color: var(--accent-light);
        }

        /* Feature Tabs */
        .feature-tabs {
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .feature-tabs .tabs-wrap {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 18px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 50rem;
            border: 1px solid var(--border);
            background: #fff;
            font-size: .92rem;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-chip i {
            font-size: .85rem;
        }

        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(27, 42, 74, .03);
        }

        .filter-chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(27, 42, 74, .22);
        }

        /* Core Features */
        .core-features {
            padding: 80px 0 30px;
        }

        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(27, 42, 74, .04);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(240, 138, 60, .35);
        }

        .feature-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
            background: var(--bg);
        }

        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .feature-card:hover .card-img img {
            transform: scale(1.05);
        }

        .card-img .tag-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .94);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 50rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
        }

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

        .feature-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: .92rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .feature-card .card-link {
            font-size: .9rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .feature-card .card-link i {
            transition: var(--transition);
        }

        .feature-card .card-link:hover {
            color: var(--accent-hover);
        }

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

        /* Usage Flow */
        .usage-flow {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }

        .flow-grid::before {
            content: "";
            position: absolute;
            top: 44px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--accent-light) 0 8px, transparent 8px 14px);
            z-index: 0;
            opacity: .5;
        }

        .flow-step {
            text-align: center;
            padding: 30px 22px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            position: relative;
            z-index: 1;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(27, 42, 74, .04);
        }

        .flow-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .flow-step .step-num {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 22px rgba(27, 42, 74, .25);
        }

        .flow-step:nth-child(2) .step-num {
            background: var(--accent);
            box-shadow: 0 8px 22px rgba(240, 138, 60, .3);
        }

        .flow-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .flow-step p {
            font-size: .88rem;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* Data Stats */
        .data-stats {
            padding: 80px 0;
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }

        .data-stats::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .1;
        }

        .data-stats .container {
            position: relative;
            z-index: 1;
        }

        .data-stats .section-head h2 {
            color: #fff;
        }

        .data-stats .section-head p {
            color: rgba(255, 255, 255, .7);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, .08);
            transform: translateY(-4px);
            border-color: rgba(240, 138, 60, .4);
        }

        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent-light);
            margin-bottom: 14px;
        }

        .stat-card .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-card .stat-label {
            font-size: .9rem;
            color: rgba(255, 255, 255, .7);
            margin-top: 6px;
        }

        /* Advanced Guide */
        .advanced-guide {
            padding: 80px 0;
            background: var(--bg);
        }

        .advanced-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            gap: 18px;
            box-shadow: 0 4px 16px rgba(27, 42, 74, .04);
        }

        .advanced-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(240, 138, 60, .3);
        }

        .advanced-card .advanced-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            opacity: .5;
        }

        .advanced-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .advanced-card p {
            font-size: .9rem;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(27, 42, 74, .03);
            transition: var(--transition);
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-button {
            background-color: #fff;
            color: var(--primary);
            font-weight: 600;
            font-size: .98rem;
            padding: 20px 24px;
            box-shadow: none;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary);
            color: #fff;
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

        .accordion-button::after {
            background-size: 18px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
        }

        .accordion-body {
            padding: 20px 24px;
            color: var(--text-light);
            font-size: .92rem;
            line-height: 1.75;
            border-top: 1px solid var(--border);
        }

        .accordion-button:not(.collapsed) + .accordion-body {
            border-top-color: rgba(255, 255, 255, .15);
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-deep), var(--primary-light));
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: .15;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(240, 138, 60, .25) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, .8);
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }

        .cta-section .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            border-radius: 50rem;
            padding: 14px 36px;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 8px 28px rgba(240, 138, 60, .4);
            transition: var(--transition);
        }

        .cta-section .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(240, 138, 60, .5);
        }

        .cta-note {
            margin-top: 16px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .6);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            padding: 70px 0 0;
            font-size: .9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

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

        .footer-brand p {
            color: rgba(255, 255, 255, .65);
            line-height: 1.8;
            margin: 0;
            max-width: 340px;
        }

        .footer-links h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

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

        .footer-links ul li a {
            color: rgba(255, 255, 255, .65);
            font-size: .88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .footer-links ul li a i {
            font-size: .7rem;
            color: var(--accent);
        }

        .footer-links ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            color: rgba(255, 255, 255, .5);
            font-size: .85rem;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .7);
        }

        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .page-banner {
                padding: 80px 0;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .navbar-collapse {
                margin-top: 14px;
                background: #fff;
                border-radius: var(--radius-sm);
                padding: 16px;
                box-shadow: var(--shadow);
            }
            .navbar-nav {
                align-items: stretch;
                gap: 6px;
            }
            .navbar-nav .nav-link {
                padding: 10px 16px;
            }
            .nav-cta {
                margin-top: 10px;
                justify-content: center;
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .flow-grid::before {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .core-features {
                padding: 60px 0 20px;
            }
            .usage-flow,
            .advanced-guide,
            .faq-section,
            .cta-section,
            .data-stats {
                padding: 56px 0;
            }
            .feature-tabs .tabs-wrap {
                justify-content: flex-start;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding: 14px;
            }
            .filter-chip {
                white-space: nowrap;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.55rem;
            }
            .page-banner p.lead {
                font-size: .98rem;
            }
            .banner-actions .btn {
                width: 100%;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .advanced-card {
                flex-direction: column;
                gap: 10px;
            }
            .section-head h2 {
                font-size: 1.35rem;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0E1E3C;
            --primary-light: #1B3A6B;
            --primary-dark: #081225;
            --accent: #D9972E;
            --accent-light: #F0BE5E;
            --accent-dark: #B57C1E;
            --bg: #F4F7FC;
            --surface: #FFFFFF;
            --text: #1C2940;
            --text-light: #64748B;
            --border: #E2E9F2;
            --success: #1F9D73;
            --warning: #E6A73A;
            --danger: #DE5A5A;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(14, 30, 60, .06);
            --shadow-md: 0 10px 30px rgba(14, 30, 60, .08);
            --shadow-lg: 0 24px 56px rgba(14, 30, 60, .14);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== 基础 Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        a:hover {
            text-decoration: none;
            color: var(--accent);
        }

        button {
            border: none;
            background: transparent;
            cursor: pointer;
            font-family: inherit;
        }

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-pad {
            padding: 96px 0;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 233, 242, .7);
            position: sticky;
            top: 0;
            z-index: 1060;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(14, 30, 60, .08);
        }

        .site-header .navbar {
            padding: 16px 0;
            min-height: 74px;
        }

        .site-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .site-brand i {
            font-size: 1.5rem;
            color: var(--accent);
            -webkit-text-fill-color: var(--accent);
            background: rgba(217, 151, 46, .12);
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            transition: var(--transition);
        }

        .site-brand:hover i {
            transform: rotate(-8deg) scale(1.04);
        }

        .navbar-nav .nav-item {
            margin: 0 4px;
        }

        .navbar-nav .nav-link {
            color: var(--text);
            font-weight: 500;
            font-size: .95rem;
            padding: 10px 18px;
            border-radius: 50px;
            position: relative;
            transition: var(--transition);
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .3s ease;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(14, 30, 60, .04);
        }

        .navbar-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(14, 30, 60, .06);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 600;
            font-size: .92rem;
            padding: 11px 24px;
            border-radius: 50px;
            box-shadow: 0 6px 20px rgba(217, 151, 46, .3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(217, 151, 46, .4);
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            color: var(--primary);
            font-size: 1.2rem;
            outline: none !important;
            box-shadow: none !important;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(217, 151, 46, .25) !important;
        }

        /* ===== 页面横幅 Hero Banner ===== */
        .page-banner {
            position: relative;
            padding: 120px 0 96px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(8, 18, 37, .92) 0%, rgba(14, 30, 60, .78) 50%, rgba(27, 58, 107, .62) 100%);
            z-index: -1;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            right: -10%;
            top: -20%;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(217, 151, 46, .2) 0%, transparent 65%);
            z-index: -1;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(217, 151, 46, .15);
            color: var(--accent-light);
            font-size: .85rem;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 50px;
            border: 1px solid rgba(217, 151, 46, .3);
            margin-bottom: 20px;
            letter-spacing: .04em;
        }

        .page-banner h1 {
            color: #fff;
            font-size: clamp(2rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            max-width: 680px;
            margin-bottom: 18px;
        }

        .page-banner h1 .accent-text {
            color: var(--accent-light);
            position: relative;
        }

        .page-banner .banner-desc {
            color: rgba(255, 255, 255, .82);
            font-size: 1.08rem;
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 28px;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            color: rgba(255, 255, 255, .65);
            font-size: .9rem;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, .75);
            transition: var(--transition);
        }

        .banner-breadcrumb a:hover {
            color: var(--accent-light);
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, .4);
            margin: 0 2px;
        }

        .banner-stat {
            display: flex;
            align-items: center;
            gap: 30px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, .14);
            flex-wrap: wrap;
        }

        .banner-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, .8);
            font-size: .9rem;
        }

        .banner-stat-item i {
            color: var(--accent-light);
            font-size: 1.1rem;
        }

        .banner-stat-item strong {
            color: #fff;
            font-size: 1.1rem;
            margin-right: 4px;
        }

        /* ===== 板块标题 ===== */
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(217, 151, 46, .12);
            color: var(--accent-dark);
            font-size: .8rem;
            font-weight: 700;
            padding: 6px 18px;
            border-radius: 50px;
            letter-spacing: .06em;
            margin-bottom: 16px;
            border: 1px solid rgba(217, 151, 46, .2);
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            margin-bottom: 14px;
            line-height: 1.25;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 1.02rem;
            line-height: 1.7;
        }

        /* ===== FAQ 主题标签 ===== */
        .faq-topics {
            padding: 44px 0 10px;
            background: var(--surface);
        }

        .topic-chips {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            padding: 24px;
            background: var(--bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
        }

        .topic-chip {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 12px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            color: var(--text);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .topic-chip i {
            color: var(--accent);
            font-size: 1rem;
        }

        .topic-chip:hover {
            border-color: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .topic-chip.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-color: transparent;
            color: #fff;
            box-shadow: 0 8px 24px rgba(14, 30, 60, .24);
        }

        .topic-chip.active i {
            color: var(--accent-light);
        }

        /* ===== FAQ 分组 ===== */
        .faq-section {
            padding: 60px 0 88px;
            background: var(--surface);
        }

        .faq-group {
            margin-bottom: 72px;
        }

        .faq-group:last-child {
            margin-bottom: 0;
        }

        .faq-group-header {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .faq-group-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 16px;
            color: var(--accent-light);
            font-size: 1.25rem;
            box-shadow: 0 8px 20px rgba(14, 30, 60, .18);
        }

        .faq-group-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: -0.01em;
        }

        .faq-group-header p {
            color: var(--text-light);
            font-size: .94rem;
            margin: 0;
        }

        .faq-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-accordion .accordion-item:last-child {
            margin-bottom: 0;
        }

        .faq-accordion .accordion-item:hover {
            border-color: rgba(217, 151, 46, .35);
            box-shadow: var(--shadow-md);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 1.02rem;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button .question-icon {
            color: var(--accent);
            font-size: 1.05rem;
            flex-shrink: 0;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary);
            color: #fff;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(217, 151, 46, .22);
            border-radius: var(--radius-md);
        }

        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            filter: none;
            opacity: .6;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
            opacity: .9;
        }

        .faq-accordion .accordion-body {
            padding: 20px 24px;
            color: var(--text-light);
            line-height: 1.85;
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .faq-accordion .accordion-body p {
            margin-bottom: 12px;
        }

        .faq-accordion .accordion-body p:last-child {
            margin-bottom: 0;
        }

        .faq-accordion .accordion-body .faq-tips {
            background: rgba(217, 151, 46, .08);
            border-left: 3px solid var(--accent);
            padding: 14px 16px;
            border-radius: 0 8px 8px 0;
            margin-top: 14px;
            font-size: .92rem;
            color: var(--text);
        }

        .faq-accordion .accordion-body .faq-tips i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* ===== 快速速查卡片 ===== */
        .quick-guide {
            padding: 96px 0;
            background: var(--bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .quick-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }

        .quick-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(217, 151, 46, .3);
        }

        .quick-card-img {
            position: relative;
            height: 168px;
            overflow: hidden;
        }

        .quick-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .quick-card:hover .quick-card-img img {
            transform: scale(1.06);
        }

        .quick-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 30, 60, .5), transparent);
        }

        .quick-card-img .type-badge {
            position: absolute;
            left: 14px;
            bottom: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 50px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            backdrop-filter: blur(6px);
        }

        .quick-card-body {
            padding: 22px 22px 24px;
        }

        .quick-card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .quick-card-body p {
            color: var(--text-light);
            font-size: .9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .quick-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .88rem;
            font-weight: 600;
            color: var(--accent-dark);
            transition: var(--transition);
        }

        .quick-card-link:hover {
            gap: 10px;
            color: var(--primary);
        }

        /* ===== 流程指引 ===== */
        .process-guide {
            padding: 96px 0;
            background: linear-gradient(160deg, #fff 0%, var(--bg) 100%);
        }

        .process-guide .process-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .process-guide .process-image img {
            width: 100%;
            height: auto;
        }

        .process-guide .process-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 30, 60, .25), transparent);
        }

        .process-list {
            position: relative;
            padding-left: 0;
            margin: 0;
        }

        .process-step {
            position: relative;
            display: flex;
            gap: 20px;
            margin-bottom: 36px;
            padding-left: 48px;
        }

        .process-step:last-child {
            margin-bottom: 0;
        }

        .process-step::before {
            content: "";
            position: absolute;
            left: 20px;
            top: 52px;
            bottom: -20px;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), rgba(217, 151, 46, .15));
        }

        .process-step:last-child::before {
            display: none;
        }

        .process-step-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            background: var(--primary);
            color: var(--accent-light);
            box-shadow: 0 6px 16px rgba(14, 30, 60, .18);
            z-index: 2;
        }

        .process-step-content {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            flex: 1;
            transition: var(--transition);
        }

        .process-step-content:hover {
            border-color: rgba(217, 151, 46, .35);
            box-shadow: var(--shadow-md);
        }

        .process-step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .process-step-content p {
            color: var(--text-light);
            font-size: .9rem;
            margin: 0;
            line-height: 1.65;
        }

        /* ===== CTA ===== */
        .faq-cta {
            padding: 72px 0;
            background: var(--surface);
        }

        .cta-inner {
            position: relative;
            border-radius: var(--radius-lg);
            background-size: cover;
            background-position: center;
            padding: 64px 48px;
            overflow: hidden;
            isolation: isolate;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-inner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(8, 18, 37, .92), rgba(14, 30, 60, .8));
            z-index: -1;
        }

        .cta-content h2 {
            color: #fff;
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .78);
            font-size: .98rem;
            max-width: 420px;
            margin: 0;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            padding: 14px 28px;
            border-radius: 50px;
            box-shadow: 0 8px 24px rgba(217, 151, 46, .35);
            transition: var(--transition);
            border: none;
            white-space: nowrap;
        }

        .btn-accent:hover {
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(217, 151, 46, .45);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .4);
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            padding: 12px 24px;
            border-radius: 50px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-outline-light:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .7);
            padding: 72px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand .site-brand {
            color: #fff;
            -webkit-text-fill-color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .site-brand i {
            -webkit-text-fill-color: var(--accent);
            background: rgba(217, 151, 46, .15);
        }

        .footer-brand p {
            color: rgba(255, 255, 255, .6);
            font-size: .94rem;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-links h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .footer-links ul li a {
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-links ul li a i {
            font-size: .7rem;
            color: var(--accent);
        }

        .footer-links ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: .86rem;
        }

        .footer-bottom p {
            margin: 0;
            color: rgba(255, 255, 255, .45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .7);
        }

        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 991.98px) {
            .section-pad {
                padding: 72px 0;
            }

            .quick-guide,
            .process-guide {
                padding: 72px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .navbar-collapse {
                background: var(--surface);
                border-radius: var(--radius-md);
                padding: 18px;
                margin-top: 12px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
            }

            .navbar-nav .nav-item {
                margin: 2px 0;
            }

            .navbar-nav .nav-link {
                border-radius: var(--radius-sm);
                padding: 12px 16px;
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .nav-cta {
                margin-top: 14px;
                justify-content: center;
                width: 100%;
            }

            .process-step {
                padding-left: 44px;
            }

            .process-step::before {
                left: 20px;
            }

            .process-step-num {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }

            .cta-inner {
                padding: 48px 32px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }

            .page-banner {
                padding: 80px 0 64px;
            }

            .banner-stat {
                gap: 18px;
            }

            .section-head {
                margin-bottom: 40px;
            }

            .quick-guide,
            .process-guide {
                padding: 60px 0;
            }

            .faq-topics {
                padding: 30px 0 6px;
            }

            .topic-chips {
                padding: 16px;
                gap: 10px;
            }

            .topic-chip {
                padding: 10px 18px;
                font-size: .88rem;
            }

            .faq-group-header {
                flex-direction: row;
                gap: 14px;
            }

            .faq-group-icon {
                width: 44px;
                height: 44px;
                font-size: 1.05rem;
                border-radius: 12px;
            }

            .faq-group-header h2 {
                font-size: 1.3rem;
            }

            .cta-inner {
                padding: 40px 24px;
            }

            .cta-content h2 {
                font-size: 1.4rem;
            }

            .cta-actions {
                width: 100%;
            }

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

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .page-banner h1 {
                font-size: 1.8rem;
            }

            .page-banner .banner-desc {
                font-size: .95rem;
            }

            .banner-stat {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .faq-group-header p {
                font-size: .88rem;
            }

            .faq-accordion .accordion-button {
                font-size: .95rem;
                padding: 16px 16px;
            }

            .faq-accordion .accordion-body {
                padding: 16px;
            }

            .process-step {
                padding-left: 40px;
                gap: 14px;
            }

            .process-step::before {
                left: 19px;
            }

            .process-step-num {
                width: 38px;
                height: 38px;
            }

            .process-step-content {
                padding: 16px 14px;
            }

            .process-step-content p {
                font-size: .85rem;
            }

            .cta-inner {
                padding: 36px 20px;
                border-radius: var(--radius-md);
            }
        }

        @media (max-width: 380px) {
            .site-brand {
                font-size: 1.2rem;
            }

            .site-brand i {
                width: 36px;
                height: 36px;
                font-size: 1.2rem;
            }

            .topic-chip {
                font-size: .82rem;
                padding: 8px 14px;
            }
        }