/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --bg-primary: #0B0C10;
            --bg-secondary: #111318;
            --bg-card: rgba(255, 255, 255, 0.03);
            --bg-card-hover: rgba(255, 255, 255, 0.06);
            --bg-glass: rgba(20, 22, 27, 0.75);
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-medium: rgba(255, 255, 255, 0.10);
            --border-bright: rgba(255, 255, 255, 0.18);
            --text-primary: #E0E0E0;
            --text-heading: #FFFFFF;
            --text-secondary: #9CA3AF;
            --text-muted: #6B7280;
            --accent-red: #FF2A4B;
            --accent-red-glow: rgba(255, 42, 75, 0.5);
            --accent-purple: #9B30FF;
            --accent-purple-glow: rgba(155, 48, 255, 0.4);
            --accent-gold: #D4AF37;
            --accent-gold-glow: rgba(212, 175, 55, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 36px rgba(0, 0, 0, 0.55);
            --shadow-glow-red: 0 0 18px rgba(255, 42, 75, 0.35);
            --shadow-glow-purple: 0 0 18px rgba(155, 48, 255, 0.3);
            --shadow-glow-gold: 0 0 18px rgba(212, 175, 55, 0.3);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', monospace;
            --nav-width: 280px;
            --container-max: 1200px;
            --section-gap: 100px;
            --section-gap-mobile: 60px;
            --card-gap: 24px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        /* ============ 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-color: var(--bg-primary);
            min-height: 100vh;
            display: flex;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            line-height: 1.3;
            font-weight: 700;
        }

        /* ============ 左侧固定导航 ============ */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: rgba(11, 12, 16, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-right: 1px solid var(--border-subtle);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 20px 20px;
            transition: transform var(--transition-normal);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 36px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-red), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 14px rgba(255, 42, 75, 0.3);
        }

        .nav-logo-text {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            letter-spacing: 0.3px;
        }

        .nav-logo-text span {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1px;
        }

        .nav-menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            border-left: 2px solid transparent;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--text-heading);
            background: rgba(255, 255, 255, 0.04);
            border-left-color: var(--accent-red);
        }

        .nav-menu a .nav-icon {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .nav-menu a .nav-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }

        .nav-search {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--border-subtle);
        }

        .nav-search-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 9px 12px;
            transition: border-color var(--transition-fast);
        }

        .nav-search-inner:focus-within {
            border-color: var(--accent-red);
        }

        .nav-search-inner svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: var(--text-secondary);
            stroke-width: 2;
            flex-shrink: 0;
        }

        .nav-search-inner input {
            width: 100%;
            font-size: 13px;
            color: var(--text-primary);
            background: transparent;
        }

        .nav-search-inner input::placeholder {
            color: var(--text-muted);
        }

        /* ============ 主内容区域 ============ */
        .site-main {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            overflow-x: hidden;
        }

        /* ============ 移动端汉堡按钮 ============ */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 14px;
            right: 16px;
            z-index: 1100;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(11, 12, 16, 0.9);
            border: 1px solid var(--border-medium);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-heading);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .mobile-nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

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

        .container-wide {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ Hero 板块 ============ */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 12, 16, 0.88) 0%, rgba(11, 12, 16, 0.65) 40%, rgba(11, 12, 16, 0.75) 100%);
            z-index: 1;
        }

        .hero-noise {
            position: absolute;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.04'/%3E%3C/svg%3E");
            z-index: 1;
            pointer-events: none;
        }

        .hero-grid-lines {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 60px 60px;
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            padding: 0 24px;
            margin-left: 40px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 42, 75, 0.12);
            border: 1px solid rgba(255, 42, 75, 0.3);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-red);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-red);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 42, 75, 0.7);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 42, 75, 0);
            }
        }

        .hero-title {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.15;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-red), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent-red);
            color: #fff;
            border: none;
            box-shadow: 0 0 0 0 rgba(255, 42, 75, 0.4);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-red);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-heading);
            border: 1px solid var(--border-medium);
        }

        .btn-outline:hover {
            border-color: var(--accent-red);
            background: rgba(255, 42, 75, 0.08);
            color: var(--accent-red);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .hero-visual-accent {
            position: absolute;
            right: 60px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 2;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 42, 75, 0.08) 0%, rgba(155, 48, 255, 0.04) 50%, transparent 70%);
            pointer-events: none;
        }

        .hero-visual-accent::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 180px;
            height: 180px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.06);
            animation: rotate-slow 20s linear infinite;
        }

        @keyframes rotate-slow {
            from {
                transform: translate(-50%, -50%) rotate(0deg);
            }
            to {
                transform: translate(-50%, -50%) rotate(360deg);
            }
        }

        /* ============ 板块通用样式 ============ */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-red);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ============ 服务板块 ============ */
        .services-section {
            background: var(--bg-secondary);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--card-gap);
        }

        .service-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-normal);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: transparent;
            transition: background var(--transition-normal);
        }

        .service-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-bright);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .service-card:hover::before {
            background: var(--accent-red);
        }

        .service-card-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 42, 75, 0.08);
            transition: all var(--transition-normal);
        }

        .service-card:hover .service-card-icon {
            background: rgba(255, 42, 75, 0.15);
            box-shadow: 0 0 20px rgba(255, 42, 75, 0.2);
        }

        .service-card-icon svg {
            width: 26px;
            height: 26px;
            fill: none;
            stroke: var(--accent-red);
            stroke-width: 1.8;
        }

        .service-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-heading);
        }

        .service-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .service-card-img {
            width: 100%;
            height: 120px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            opacity: 0.7;
            transition: opacity var(--transition-normal);
        }

        .service-card:hover .service-card-img {
            opacity: 0.9;
        }

        /* ============ 优势数据板块 ============ */
        .stats-section {
            position: relative;
            background: var(--bg-primary);
        }

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

        .stat-item {
            padding: 28px 16px;
            border-radius: var(--radius-md);
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-normal);
        }

        .stat-item:hover {
            border-color: var(--border-bright);
            box-shadow: var(--shadow-card-hover);
        }

        .stat-icon {
            width: 40px;
            height: 40px;
            margin: 0 auto 12px;
            color: var(--accent-gold);
        }

        .stat-icon svg {
            width: 100%;
            height: 100%;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-heading);
            font-family: var(--font-mono);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }

        .stats-note {
            text-align: center;
            margin-top: 20px;
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }

        /* ============ 案例板块（热门帖子console风格） ============ */
        .cases-section {
            background: var(--bg-secondary);
        }

        .cases-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 900px;
            margin: 0 auto;
        }

        .case-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            transition: all var(--transition-fast);
            cursor: pointer;
            flex-wrap: wrap;
        }

        .case-card:hover {
            border-color: var(--accent-red);
            box-shadow: 0 0 16px rgba(255, 42, 75, 0.12);
            background: rgba(255, 255, 255, 0.05);
        }

        .case-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 4px 10px;
            border-radius: 3px;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }

        .case-tag.hot {
            background: rgba(255, 42, 75, 0.15);
            color: var(--accent-red);
            border: 1px solid rgba(255, 42, 75, 0.3);
        }

        .case-tag.featured {
            background: rgba(212, 175, 55, 0.12);
            color: var(--accent-gold);
            border: 1px solid rgba(212, 175, 55, 0.3);
        }

        .case-tag.new {
            background: rgba(155, 48, 255, 0.12);
            color: var(--accent-purple);
            border: 1px solid rgba(155, 48, 255, 0.3);
        }

        .case-title {
            flex: 1;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            min-width: 180px;
            transition: color var(--transition-fast);
        }

        .case-card:hover .case-title {
            color: var(--accent-red);
            text-decoration: underline;
        }

        .case-meta {
            display: flex;
            gap: 16px;
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .case-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .case-thumb {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            opacity: 0.6;
            transition: opacity var(--transition-fast);
        }

        .case-card:hover .case-thumb {
            opacity: 0.85;
        }

        /* ============ 资讯区（左列表+右推荐） ============ */
        .news-section {
            background: var(--bg-primary);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .news-item:hover {
            padding-left: 8px;
        }

        .news-item:hover .news-item-title {
            color: var(--accent-red);
        }

        .news-item-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-red);
            flex-shrink: 0;
        }

        .news-item-title {
            flex: 1;
            font-size: 14.5px;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .news-item-date {
            font-family: var(--font-mono);
            font-size: 11px;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .news-sidebar {
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .news-sidebar h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .news-sidebar-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .news-sidebar-item:hover .news-sidebar-title {
            color: var(--accent-purple);
        }

        .news-sidebar-num {
            font-family: var(--font-mono);
            font-size: 20px;
            font-weight: 700;
            color: var(--accent-gold);
            flex-shrink: 0;
            width: 28px;
            text-align: center;
        }

        .news-sidebar-title {
            font-size: 13px;
            color: var(--text-primary);
            transition: color var(--transition-fast);
            line-height: 1.4;
        }

        /* ============ 方案板块（会员等级） ============ */
        .plans-section {
            background: var(--bg-secondary);
        }

        .plans-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--card-gap);
        }

        .plan-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .plan-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
        }

        .plan-card.plan-free::before {
            background: var(--accent-red);
        }

        .plan-card.plan-vip::before {
            background: var(--accent-gold);
        }

        .plan-card.plan-supreme::before {
            background: var(--accent-purple);
        }

        .plan-card.plan-vip {
            border-color: rgba(212, 175, 55, 0.3);
            box-shadow: 0 0 30px rgba(212, 175, 55, 0.08);
        }

        .plan-card.plan-supreme {
            border-color: rgba(155, 48, 255, 0.25);
            box-shadow: 0 0 30px rgba(155, 48, 255, 0.08);
        }

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

        .plan-card.plan-vip:hover {
            box-shadow: var(--shadow-glow-gold), var(--shadow-card-hover);
        }

        .plan-card.plan-supreme:hover {
            box-shadow: var(--shadow-glow-purple), var(--shadow-card-hover);
        }

        .plan-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .plan-price-tag {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            padding: 4px 12px;
            border-radius: 12px;
            display: inline-block;
            background: rgba(255, 255, 255, 0.04);
        }

        .plan-features {
            text-align: left;
            margin-bottom: 24px;
        }

        .plan-features li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            padding: 7px 0;
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .plan-features li .check-icon {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            margin-top: 2px;
            color: var(--accent-gold);
        }

        .plan-features li .check-icon svg {
            width: 100%;
            height: 100%;
            fill: none;
            stroke: currentColor;
            stroke-width: 2.5;
        }

        .plan-btn {
            display: inline-block;
            padding: 11px 28px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .plan-free .plan-btn {
            background: transparent;
            border: 1px solid var(--border-medium);
            color: var(--text-heading);
        }

        .plan-free .plan-btn:hover {
            border-color: var(--accent-red);
            background: rgba(255, 42, 75, 0.08);
        }

        .plan-vip .plan-btn {
            background: var(--accent-gold);
            color: #1a1a1a;
        }

        .plan-vip .plan-btn:hover {
            box-shadow: var(--shadow-glow-gold);
        }

        .plan-supreme .plan-btn {
            background: var(--accent-purple);
            color: #fff;
        }

        .plan-supreme .plan-btn:hover {
            box-shadow: var(--shadow-glow-purple);
        }

        .plan-btn:active {
            transform: scale(0.97);
        }

        /* ============ 票种对比板块 ============ */
        .compare-section {
            background: var(--bg-primary);
        }

        .compare-table-wrap {
            max-width: 900px;
            margin: 0 auto;
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-glass);
        }

        .compare-table th,
        .compare-table td {
            padding: 16px 20px;
            text-align: center;
            font-size: 14px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .compare-table th {
            background: rgba(255, 255, 255, 0.03);
            font-weight: 600;
            color: var(--text-heading);
            font-size: 15px;
            letter-spacing: 0.3px;
        }

        .compare-table th:first-child {
            text-align: left;
            padding-left: 24px;
        }

        .compare-table td {
            color: var(--text-secondary);
        }

        .compare-table td:first-child {
            text-align: left;
            padding-left: 24px;
            font-weight: 500;
            color: var(--text-primary);
        }

        .compare-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .compare-table .check-col {
            color: var(--accent-gold);
            font-weight: 600;
        }

        .compare-table .cross-col {
            color: var(--text-muted);
        }

        .compare-cta-row {
            text-align: center;
            padding-top: 28px;
        }

        /* ============ 保障图标条 ============ */
        .trust-section {
            background: var(--bg-secondary);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--card-gap);
            text-align: center;
        }

        .trust-item {
            padding: 24px 16px;
            border-radius: var(--radius-md);
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-normal);
        }

        .trust-item:hover {
            border-color: var(--border-bright);
            box-shadow: var(--shadow-card-hover);
        }

        .trust-icon-wrap {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(212, 175, 55, 0.08);
            transition: all var(--transition-normal);
        }

        .trust-item:hover .trust-icon-wrap {
            background: rgba(212, 175, 55, 0.16);
            box-shadow: 0 0 16px rgba(212, 175, 55, 0.2);
        }

        .trust-icon-wrap svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: var(--accent-gold);
            stroke-width: 1.8;
        }

        .trust-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .trust-item p {
            font-size: 12px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

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

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-color: var(--border-bright);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: background var(--transition-fast);
            gap: 12px;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-q-label {
            color: var(--accent-red);
            font-weight: 700;
            flex-shrink: 0;
            font-family: var(--font-mono);
            font-size: 14px;
        }

        .faq-question-text {
            flex: 1;
        }

        .faq-arrow {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            color: var(--text-secondary);
        }

        .faq-arrow svg {
            width: 100%;
            height: 100%;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-red);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer-inner {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 28px;
            position: relative;
        }

        .faq-answer-inner::before {
            content: 'A:';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent-gold);
            font-weight: 700;
            font-family: var(--font-mono);
            font-size: 13px;
        }

        /* ============ 联系板块 ============ */
        .contact-section {
            background: var(--bg-secondary);
        }

        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            max-width: 900px;
            margin: 0 auto;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 13px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color var(--transition-fast);
            resize: vertical;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--accent-red);
            outline: none;
        }

        .contact-form input::placeholder,
        .contact-form textarea::placeholder {
            color: var(--text-muted);
        }

        .contact-form textarea {
            min-height: 120px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
            justify-content: center;
        }

        .contact-info-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .contact-info-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 42, 75, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .contact-info-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: var(--accent-red);
            stroke-width: 2;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #08090D;
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 28px;
            text-align: center;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .footer-social {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 20px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .footer-social a:hover {
            border-color: var(--accent-red);
            color: var(--accent-red);
            background: rgba(255, 42, 75, 0.06);
        }

        .footer-social svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }

        .footer-copyright {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }

        .footer-copyright a {
            color: var(--text-muted);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-copyright a:hover {
            color: var(--text-secondary);
        }

        /* ============ 移动端响应式 ============ */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .plans-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-visual-accent {
                width: 200px;
                height: 200px;
                right: 20px;
            }
            .hero-content {
                margin-left: 20px;
            }
            .hero-title {
                font-size: 36px;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .site-nav {
                transform: translateX(-100%);
                width: 260px;
            }
            .site-nav.mobile-open {
                transform: translateX(0);
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .site-main {
                margin-left: 0;
            }
            .hero-section {
                min-height: 80vh;
            }
            .hero-content {
                margin-left: 0;
                padding: 0 20px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-visual-accent {
                display: none;
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .plans-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .trust-grid {
                grid-template-columns: 1fr 1fr;
            }
            .contact-layout {
                grid-template-columns: 1fr;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .case-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .case-meta {
                gap: 10px;
            }
            .compare-table-wrap {
                font-size: 12px;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .container {
                padding: 0 16px;
            }
            .container-wide {
                padding: 0 16px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                justify-content: center;
                width: 100%;
            }
            .stat-number {
                font-size: 32px;
            }
            .news-layout {
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-section {
                min-height: 70vh;
            }
            .section-title {
                font-size: 22px;
            }
            .plan-card {
                padding: 24px 16px;
            }
            .case-card {
                padding: 12px 14px;
            }
            .case-title {
                font-size: 14px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .footer-links {
                gap: 14px;
            }
        }

        /* 移动端导航遮罩 */
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
        }
        .nav-overlay.active {
            display: block;
        }

        @media (min-width: 769px) {
            .nav-overlay {
                display: none !important;
            }
        }