/* roulang page: index */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a832;
            --accent-light: #f0c060;
            --accent-dark: #c88a1e;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-muted: #7a8a9a;
            --text-white: #f0f4f8;
            --border: #e0e6ed;
            --border-light: #edf2f7;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.08);
            --shadow-md: 0 6px 24px rgba(26, 58, 92, 0.12);
            --shadow-lg: 0 16px 48px rgba(26, 58, 92, 0.16);
            --shadow-accent: 0 6px 24px rgba(232, 168, 50, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            line-height: 1.7;
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
        }

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

        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        .text-center {
            text-align: center;
        }

        .text-accent {
            color: var(--accent);
        }

        .bg-white {
            background: var(--bg-white);
        }

        .bg-light {
            background: var(--bg-light);
        }

        .bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            border-radius: 50px;
            background: var(--accent);
            color: var(--text-dark);
        }

        .badge-primary {
            background: var(--primary);
            color: var(--text-white);
        }

        .badge-light {
            background: var(--border-light);
            color: var(--text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            background: var(--primary);
            color: var(--text-white);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:hover {
            background: var(--primary-light);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--text-dark);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            color: var(--text-dark);
            box-shadow: var(--shadow-accent);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
        }

        .btn-white {
            background: var(--text-white);
            color: var(--primary);
        }
        .btn-white:hover {
            background: var(--bg-white);
            color: var(--primary-dark);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 0.875rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            text-decoration: none;
            line-height: 1.2;
        }
        .logo:hover {
            color: var(--primary-light);
        }
        .logo .logo-sub {
            font-weight: 400;
            font-size: 0.7rem;
            color: var(--text-muted);
            display: block;
            letter-spacing: 0.05em;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }

        .nav-menu li a {
            display: block;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 50px;
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-menu li a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }
        .nav-menu li a.active {
            color: var(--text-white);
            background: var(--primary);
        }
        .nav-menu li a.active:hover {
            background: var(--primary-light);
        }

        .nav-cta .btn {
            padding: 8px 24px;
            font-size: 0.9rem;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(26, 58, 92, 0.06);
        }
        .mobile-toggle:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.4;
            mix-blend-mode: overlay;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 0%, rgba(26, 58, 92, 0.80) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(232, 168, 50, 0.2);
            color: var(--accent-light);
            border: 1px solid rgba(232, 168, 50, 0.3);
            margin-bottom: 24px;
            letter-spacing: 0.04em;
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }

        .hero p {
            font-size: 1.2rem;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 600px;
        }

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

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(240, 244, 248, 0.6);
            margin-top: 4px;
        }

        /* ===== Features / Services ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-card .icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: rgba(26, 58, 92, 0.08);
            color: var(--primary);
        }

        .feature-card .icon.accent {
            background: rgba(232, 168, 50, 0.15);
            color: var(--accent-dark);
        }

        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Cover Cards ===== */
        .cover-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .cover-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .cover-card .cover-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cover-card .cover-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
        }

        .cover-card .cover-body {
            padding: 24px 24px 28px;
        }

        .cover-card .cover-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .cover-card .cover-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .cover-card .cover-body .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .cover-card .cover-body .meta i {
            margin-right: 4px;
        }

        /* ===== CMS List ===== */
        .cms-list-section {
            background: var(--bg-white);
        }

        .cms-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .cms-item {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            background: var(--bg-white);
        }
        .cms-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .cms-item .cms-thumb {
            width: 120px;
            min-height: 80px;
            border-radius: var(--radius-sm);
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }

        .cms-item .cms-info {
            flex: 1;
            min-width: 0;
        }

        .cms-item .cms-info .cms-cat {
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-dark);
            display: inline-block;
            margin-bottom: 4px;
        }

        .cms-item .cms-info h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-item .cms-info h4 a {
            color: inherit;
        }
        .cms-item .cms-info h4 a:hover {
            color: var(--primary);
        }

        .cms-item .cms-info .cms-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .cms-item .cms-info .cms-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .cms-item .cms-info .cms-meta i {
            margin-right: 4px;
        }

        .cms-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-light);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .stat-card .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }

        .stat-card .label {
            font-size: 0.95rem;
            color: rgba(240, 244, 248, 0.7);
            margin-top: 8px;
        }

        /* ===== Testimonials / Trust ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-sm);
        }

        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .testimonial-card .author .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--text-muted);
        }

        .testimonial-card .author .name {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.95rem;
        }
        .testimonial-card .author .role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 0;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            font-family: var(--font-sans);
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .faq-question .icon {
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open .icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 0 0 0;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-answer.open {
            max-height: 300px;
            padding: 12px 0 4px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 0;
        }

        .cta-content h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-content p {
            font-size: 1.15rem;
            color: rgba(240, 244, 248, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-content .btn {
            font-size: 1.1rem;
            padding: 14px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(240, 244, 248, 0.7);
            padding: 60px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand .logo .logo-sub {
            color: rgba(240, 244, 248, 0.5);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(240, 244, 248, 0.6);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: rgba(240, 244, 248, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(240, 244, 248, 0.6);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--text-dark);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid,
            .cover-grid,
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .mobile-toggle {
                display: block;
            }

            .hero {
                min-height: 480px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-item .num {
                font-size: 1.6rem;
            }

            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }

            .features-grid,
            .cover-grid,
            .testimonial-grid,
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .cms-grid {
                grid-template-columns: 1fr;
            }
            .cms-item {
                flex-direction: column;
            }
            .cms-item .cms-thumb {
                width: 100%;
                height: 160px;
            }

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

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-content h2 {
                font-size: 1.8rem;
            }
            .cta-content p {
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
                align-items: flex-start;
            }
            .hero-stat-item {
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .hero-stat-item .num {
                font-size: 1.4rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .num {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cover-card .cover-img {
                height: 160px;
            }
            .feature-card {
                padding: 28px 20px;
            }
        }

        /* ===== Utilities ===== */
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-muted {
            color: var(--text-muted);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-dark: #0f2640;
            --primary-light: #2c5f8a;
            --accent: #e67e22;
            --accent-hover: #d35400;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --text-primary: #1e2a3a;
            --text-secondary: #5a6a7e;
            --text-muted: #8899aa;
            --text-on-dark: #ffffff;
            --border: #e0e6ed;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --gutter: 20px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: var(--text-primary);
        }
        h1 { font-size: 2rem; }
        h2 { font-size: 1.5rem; }
        h3 { font-size: 1.2rem; }
        p { margin: 0 0 1em; }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--gutter);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 var(--gutter);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            min-height: 70px;
        }
        .logo {
            display: inline-flex;
            align-items: baseline;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        .logo:hover { color: var(--accent); }
        .logo-sub {
            font-size: 0.75rem;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 4px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-menu li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-menu li a:hover::after,
        .nav-menu li a.active::after {
            width: 100%;
        }
        .nav-menu li a.active {
            color: var(--primary);
        }
        .nav-cta .btn {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-cta .btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(230,126,34,0.3);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
        }

        /* ===== Hero / Banner for article ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 3rem 0 2.5rem;
            margin-bottom: 2rem;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-hero .container {
            color: var(--text-on-dark);
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .article-hero h1 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 0.5rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-meta {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-top: 0.5rem;
        }
        .article-meta i {
            margin-right: 4px;
        }
        .article-meta span {
            margin: 0 0.8rem;
        }

        /* ===== Main Content ===== */
        .article-main {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2.5rem;
            margin-bottom: 2rem;
            line-height: 1.8;
            color: var(--text-primary);
        }
        .article-main img {
            border-radius: var(--radius-sm);
            margin: 1.5rem auto;
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
        }
        .article-main p {
            margin-bottom: 1.2rem;
        }
        .article-main h2 {
            margin-top: 2rem;
            border-bottom: 2px solid var(--border);
            padding-bottom: 0.5rem;
        }
        .article-not-found {
            text-align: center;
            padding: 4rem 0;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--primary);
        }
        .article-not-found a {
            display: inline-block;
            margin-top: 1.5rem;
            background: var(--accent);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found a:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
        }

        /* ===== Related / CTA ===== */
        .related-section {
            padding: 2.5rem 0;
            background: var(--bg-light);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 2rem;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            cursor: default;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        .related-card .card-body {
            padding: 1.2rem;
        }
        .related-card .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .related-card .card-body .btn {
            margin-top: 1rem;
            background: var(--primary-light);
            color: #fff;
            border: none;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-block;
        }
        .related-card .card-body .btn:hover {
            background: var(--primary);
        }

        /* ===== CTA Block ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            padding: 3rem 0;
            text-align: center;
            color: #fff;
            margin-top: 2rem;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 1.8rem;
            margin-bottom: 0.8rem;
        }
        .cta-block p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 1.5rem;
        }
        .cta-block .btn {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 0.9rem 2.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            display: inline-block;
        }
        .cta-block .btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230,126,34,0.4);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.85);
            padding: 2.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo {
            color: #fff;
        }
        .footer-brand .logo-sub {
            color: rgba(255,255,255,0.6);
        }
        .footer-brand p {
            margin-top: 0.8rem;
            font-size: 0.9rem;
            line-height: 1.6;
            opacity: 0.8;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
            font-size: 0.9rem;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-col ul li i {
            margin-right: 8px;
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 1.2rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .footer-social a {
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            margin-left: 0.8rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media screen and (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 1rem 0;
                gap: 0.5rem;
                background: var(--bg-white);
                border-top: 1px solid var(--border);
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .site-header .container {
                flex-wrap: nowrap;
            }
            .logo {
                font-size: 1.3rem;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-main {
                padding: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        @media screen and (max-width: 520px) {
            .article-hero {
                padding: 2rem 0 1.5rem;
            }
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .cta-block h2 {
                font-size: 1.2rem;
            }
            .article-meta span {
                display: block;
                margin: 0.3rem 0;
            }
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }
        .button {
            transition: var(--transition);
        }
        .card {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: none;
        }
        /* utility */
        .text-center { text-align: center; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .py-3 { padding: 2rem 0; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4ba0;
            --primary-dark: #0f1a42;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --accent-dark: #c62840;
            --bg-light: #f8f9fc;
            --bg-alt: #eef1f7;
            --bg-dark: #0f1a42;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #7a7a9a;
            --text-white: #ffffff;
            --border-color: #e0e3ed;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 42, 108, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --nav-height: 76px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        .text-center {
            text-align: center;
        }

        .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            background: rgba(233, 69, 96, 0.12);
            color: var(--accent);
            margin-bottom: 12px;
        }
        .badge-primary {
            background: rgba(26, 42, 108, 0.10);
            color: var(--primary);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(224, 227, 237, 0.6);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(26, 42, 108, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: baseline;
            gap: 4px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.03em;
            transition: var(--transition);
        }
        .logo:hover {
            color: var(--accent);
        }
        .logo .logo-sub {
            font-weight: 400;
            font-size: 0.85rem;
            color: var(--text-light);
            letter-spacing: 0.05em;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-menu li a:hover {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.06);
        }
        .nav-menu li a.active {
            color: var(--primary-dark);
            background: rgba(26, 42, 108, 0.08);
            font-weight: 600;
        }
        .nav-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .nav-cta .btn {
            padding: 8px 24px;
            font-size: 0.9rem;
            border-radius: 50px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary-dark);
            border-radius: 4px;
            transition: var(--transition);
        }

        /* ===== Hero 区域 ===== */
        .hero-guide {
            padding: 140px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero-guide::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 66, 0.88) 0%, rgba(26, 42, 108, 0.72) 100%);
            z-index: 1;
        }
        .hero-guide .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-guide .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .hero-guide .hero-title span {
            color: var(--accent-light);
        }
        .hero-guide .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-guide .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.20);
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 42, 108, 0.25);
            color: var(--text-white);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.30);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            box-shadow: 0 8px 28px rgba(233, 69, 96, 0.35);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--text-white);
            box-shadow: none;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.8);
            color: var(--text-white);
            box-shadow: none;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== 板块通用 ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 56px 0;
        }
        .bg-alt {
            background: var(--bg-alt);
        }
        .bg-white {
            background: #ffffff;
        }
        .bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        /* ===== 卖点卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--primary);
            background: rgba(26, 42, 108, 0.08);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--primary);
            color: #ffffff;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 赛事分类卡片 ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .sport-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .sport-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .sport-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .sport-card .card-body {
            padding: 20px 22px 24px;
        }
        .sport-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--primary-dark);
        }
        .sport-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 14px;
        }
        .sport-card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(233, 69, 96, 0.10);
            color: var(--accent);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            counter-increment: step;
        }
        .step-item .step-num::before {
            content: counter(step);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== 证据/数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
            color: var(--text-light);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 66, 0.90) 0%, rgba(26, 42, 108, 0.78) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }
        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand .logo .logo-sub {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-col ul li i {
            width: 20px;
            margin-right: 8px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            color: var(--accent-light);
            transform: scale(1.15);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sport-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(26, 42, 108, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-menu li a {
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-menu li a.active::after {
                display: none;
            }
            .nav-cta {
                margin-top: 8px;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-guide {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .hero-guide .hero-title {
                font-size: 2.2rem;
            }
            .hero-guide .hero-desc {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.6rem;
            }
            .section-pad {
                padding: 56px 0;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sport-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-guide .hero-title {
                font-size: 1.8rem;
            }
            .hero-guide .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-guide .hero-actions .btn {
                justify-content: center;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .sport-card .card-img {
                height: 140px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* ===== 辅助 ===== */
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }

        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeUp 0.6s ease forwards;
        }
        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }