/* roulang page: index */
:root {
            --color-primary: #e8a817;
            --color-primary-dark: #c98d0a;
            --color-primary-light: #fef3c7;
            --color-navy: #0f1b2d;
            --color-navy-light: #1a2d47;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16), 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(232, 168, 23, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* ============ 容器 ============ */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 1024px) {
            .container-custom {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }
        @media (max-width: 640px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ============ 导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-navy);
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.85;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #e8a817 0%, #f59e0b 50%, #d97706 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(232, 168, 23, 0.3);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            gap: 0.35rem;
        }
        .nav-links a:hover {
            color: var(--color-navy);
            background: var(--color-bg-alt);
        }
        .nav-links a.active {
            color: var(--color-navy);
            background: var(--color-bg-alt);
            font-weight: 600;
        }
        /* Mega Menu trigger */
        .mega-trigger {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-soft);
            cursor: pointer;
            background: transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .mega-trigger:hover {
            color: var(--color-navy);
            background: var(--color-bg-alt);
        }
        .mega-trigger .fa-chevron-down {
            font-size: 0.7rem;
            transition: transform var(--transition-smooth);
        }
        .mega-container {
            position: relative;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            width: 520px;
            background: #ffffff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border);
            padding: 1.5rem;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition-smooth);
            pointer-events: none;
            z-index: 999;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
        }
        .mega-container:hover .mega-panel,
        .mega-trigger:hover+.mega-panel,
        .mega-panel:hover {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
            pointer-events: auto;
        }
        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.875rem 1rem;
            border-radius: var(--radius-lg);
            background: var(--color-bg);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .mega-card:hover {
            background: #ffffff;
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .mega-card-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #b45309;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .mega-card-info h4 {
            margin: 0 0 0.2rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-navy);
        }
        .mega-card-info p {
            margin: 0;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            line-height: 1.4;
        }
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: var(--color-bg-alt);
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--color-text);
            cursor: pointer;
            border: none;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .mobile-menu-btn:hover {
            background: #e2e8f0;
        }
        .mobile-menu-btn.active {
            background: var(--color-navy);
            color: #fff;
        }
        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 27, 45, 0.6);
            z-index: 998;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer-panel {
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            max-width: 85vw;
            height: 100%;
            background: #ffffff;
            padding: 1.5rem;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform var(--transition-smooth);
            box-shadow: var(--shadow-xl);
        }
        .mobile-drawer.open .mobile-drawer-panel {
            transform: translateX(0);
        }
        .mobile-drawer .mobile-nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }
        .mobile-drawer .mobile-nav-links a {
            display: block;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition-fast);
        }
        .mobile-drawer .mobile-nav-links a:hover,
        .mobile-drawer .mobile-nav-links a.active {
            background: var(--color-bg-alt);
            color: var(--color-navy);
            font-weight: 600;
        }
        .mobile-drawer .mobile-mega-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0.5rem;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid var(--color-border-light);
        }

        @media (max-width: 768px) {
            .nav-links,
            .mega-container {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .header-inner {
                height: 56px;
            }
            .logo-link {
                font-size: 1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 0.5rem;
            }
        }

        /* ============ 板块间距 ============ */
        .section {
            padding: 4rem 0;
        }
        .section-sm {
            padding: 2.5rem 0;
        }
        .section-lg {
            padding: 5rem 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-lg {
                padding: 3rem 0;
            }
            .section-sm {
                padding: 1.75rem 0;
            }
        }

        /* ============ 板块标题 ============ */
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 0.3rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: #b45309;
            background: #fef3c7;
            border-radius: var(--radius-full);
            margin-bottom: 0.75rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-navy);
            margin: 0 0 0.625rem;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            margin: 0;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
            .section-header {
                margin-bottom: 2rem;
            }
        }

        /* ============ Hero ============ */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #0f1b2d 0%, #1a2d47 40%, #1f3a57 100%);
            color: #ffffff;
            padding: 5rem 0 4.5rem;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(232, 168, 23, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 1rem;
            letter-spacing: -0.025em;
            color: #ffffff;
        }
        .hero-text h1 .highlight {
            color: #e8a817;
            position: relative;
        }
        .hero-text .hero-desc {
            font-size: 1.15rem;
            color: #cbd5e1;
            margin: 0 0 2rem;
            line-height: 1.7;
            max-width: 480px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, #e8a817 0%, #d97706 100%);
            color: #1a1a1a;
            box-shadow: 0 2px 10px rgba(232, 168, 23, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(232, 168, 23, 0.45);
        }
        .btn-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.35);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.65);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 0.5rem 1.25rem;
            font-size: 0.85rem;
            border-radius: var(--radius-md);
        }
        .btn-lg {
            padding: 0.9rem 2.25rem;
            font-size: 1.05rem;
            border-radius: var(--radius-xl);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 420px;
        }
        .hero-card-main {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: 1.75rem;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .hero-card-main .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #ef4444;
            color: #fff;
            padding: 0.3rem 0.8rem;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            animation: pulse-badge 2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
            }
            50% {
                box-shadow: 0 0 0 12px rgba(239, 68, 68, 0);
            }
        }
        .hero-card-main .match-info {
            margin-top: 1rem;
            font-size: 1.1rem;
            font-weight: 600;
            color: #e2e8f0;
        }
        .hero-card-main .match-score {
            font-size: 2.5rem;
            font-weight: 800;
            color: #ffffff;
            margin: 0.5rem 0;
            letter-spacing: 0.04em;
        }
        .hero-card-sub {
            position: absolute;
            bottom: -40px;
            right: -20px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 1rem 1.25rem;
            z-index: 1;
            font-size: 0.85rem;
            color: #cbd5e1;
        }
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .hero-visual {
                order: -1;
            }
            .hero-card-stack {
                max-width: 300px;
            }
            .hero-card-sub {
                right: 0;
                bottom: -30px;
            }
        }
        @media (max-width: 640px) {
            .hero-section {
                padding: 3rem 0 2.5rem;
                min-height: auto;
                text-align: center;
            }
            .hero-text h1 {
                font-size: 1.75rem;
            }
            .hero-text .hero-desc {
                font-size: 0.95rem;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-card-stack {
                max-width: 240px;
                margin: 0 auto;
            }
            .hero-card-main .match-score {
                font-size: 1.8rem;
            }
            .hero-card-sub {
                display: none;
            }
        }

        /* ============ 优势卡片 ============ */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .advantage-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .advantage-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #e8a817, #f59e0b);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #e2e8f0;
        }
        .advantage-card:hover::before {
            opacity: 1;
        }
        .advantage-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-lg);
            background: #fef3c7;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            font-size: 1.5rem;
            color: #b45309;
            transition: all var(--transition-smooth);
        }
        .advantage-card:hover .advantage-icon {
            background: #e8a817;
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 168, 23, 0.35);
        }
        .advantage-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-navy);
            margin: 0 0 0.5rem;
        }
        .advantage-card p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .advantage-card {
                padding: 1.5rem 1.25rem;
            }
        }

        /* ============ 功能特色卡片网格 ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 1.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-smooth);
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #d9e2ec;
        }
        .feature-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #64748b;
            flex-shrink: 0;
            transition: all var(--transition-smooth);
        }
        .feature-card:hover .feature-card-icon {
            background: #0f1b2d;
            color: #e8a817;
        }
        .feature-card-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-navy);
            margin: 0 0 0.3rem;
        }
        .feature-card-info p {
            font-size: 0.83rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.55;
        }
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 0.75rem;
            }
            .feature-card {
                padding: 1.25rem;
            }
        }

        /* ============ 赛事卡片 ============ */
        .matches-scroll {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }
        .match-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 1.25rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .match-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #e2e8f0;
        }
        .match-card .match-status {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: var(--radius-full);
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 0.75rem;
        }
        .match-status.live {
            background: #fef2f2;
            color: #dc2626;
        }
        .match-status.upcoming {
            background: #eff6ff;
            color: #2563eb;
        }
        .match-status.finished {
            background: #f8fafc;
            color: #64748b;
        }
        .match-card .match-teams {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-navy);
            margin-bottom: 0.35rem;
        }
        .match-card .match-time {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .matches-scroll {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .matches-scroll {
                grid-template-columns: 1fr 1fr;
                gap: 0.65rem;
            }
            .match-card {
                padding: 1rem;
            }
        }

        /* ============ 数据统计 ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-navy);
            letter-spacing: -0.02em;
            margin-bottom: 0.25rem;
            line-height: 1.1;
        }
        .stat-number .stat-suffix {
            color: #e8a817;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .stat-card {
                padding: 1.25rem 1rem;
            }
            .stat-number {
                font-size: 1.75rem;
            }
        }

        /* ============ 使用流程 ============ */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 2.5rem;
            left: 12%;
            right: 12%;
            height: 2px;
            background: #e2e8f0;
            z-index: 0;
        }
        .step-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 2rem 1.25rem 1.5rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            position: relative;
            z-index: 1;
            transition: all var(--transition-smooth);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #0f1b2d;
            color: #e8a817;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 12px rgba(15, 27, 45, 0.3);
        }
        .step-card h4 {
            font-weight: 700;
            color: var(--color-navy);
            margin: 0 0 0.4rem;
            font-size: 1rem;
        }
        .step-card p {
            font-size: 0.83rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
        }
        @media (max-width: 640px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 0.75rem;
            }
            .step-card {
                padding: 1.5rem 1.25rem;
                display: flex;
                align-items: center;
                gap: 1rem;
                text-align: left;
            }
            .step-number {
                margin: 0;
                width: 40px;
                height: 40px;
                font-size: 1rem;
                flex-shrink: 0;
            }
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: #d9e2ec;
        }
        .faq-item summary {
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-navy);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            user-select: none;
            transition: all var(--transition-fast);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: #e8a817;
        }
        .faq-item[open] summary {
            color: #0f1b2d;
            background: #fefce8;
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .faq-item summary {
                padding: 1rem 1.25rem;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 1.25rem 1rem;
                font-size: 0.85rem;
            }
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(160deg, #0f1b2d 0%, #1a2d47 100%);
            color: #ffffff;
            text-align: center;
            border-radius: var(--radius-3xl);
            padding: 3.5rem 2rem;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(232, 168, 23, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: #cbd5e1;
            margin: 0 0 1.75rem;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1rem;
            padding: 0.85rem 2.5rem;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 2.5rem 1.25rem;
                border-radius: var(--radius-xl);
            }
            .cta-section h3 {
                font-size: 1.35rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: #0f1b2d;
            color: #cbd5e1;
            padding: 3rem 0 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
        }
        .footer-brand .footer-logo {
            font-weight: 700;
            font-size: 1.15rem;
            color: #ffffff;
            margin-bottom: 0.75rem;
            display: block;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.6;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            font-weight: 600;
            font-size: 0.9rem;
            color: #e2e8f0;
            margin: 0 0 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #e8a817;
        }
        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 480px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
        }

        /* ============ 通用工具类 ============ */
        .text-center {
            text-align: center;
        }
        .bg-white-section {
            background: #ffffff;
        }
        .bg-alt-section {
            background: #f8fafc;
        }
        .bg-navy-section {
            background: #0f1b2d;
            color: #ffffff;
        }