:root {
            --bg-color: #0B132B;
            --bg-gradient: radial-gradient(circle at 50% 0%, #1C2E59 0%, #0B132B 75%);
            --card-bg: rgba(17, 27, 56, 0.7);
            --card-border: rgba(64, 128, 255, 0.15);
            --card-hover-border: rgba(64, 128, 255, 0.4);
            
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            
            --brand-primary: #3B82F6;
            --brand-gradient: linear-gradient(135deg, #60A5FA 0%, #2563EB 100%);
            
            --shadow-glass: 0 10px 30px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.15);
            
            --radius-lg: 16px;
            --radius-pill: 9999px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            background-color: var(--bg-color);
            background-image: var(--bg-gradient);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
        }

        /* 商务风格顶部导航条 */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 19, 43, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo::before {
            content: "";
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--brand-primary);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--brand-primary);
        }

        .btn-header {
            background: var(--brand-gradient);
            color: white;
            text-decoration: none;
            padding: 10px 22px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
            transition: var(--transition);
        }

        .btn-header:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
        }

        /* 页面主视觉与企业级英雄区 */
        .hero {
            text-align: center;
            padding: 70px 20px 40px;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #FFFFFF, #93C5FD);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .promo-code {
            display: inline-flex;
            align-items: center;
            background: rgba(30, 48, 96, 0.5);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(96, 165, 250, 0.3);
            padding: 10px 20px 10px 24px;
            border-radius: var(--radius-pill);
            font-size: 1rem;
            font-weight: 500;
            color: #BFDBFE;
            box-shadow: var(--shadow-glass);
        }

        .promo-code span {
            background: var(--brand-gradient);
            color: white;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-left: 12px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 现代网格系统 */
        .main-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px 60px;
            flex: 1;
            width: 100%;
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
            gap: 24px;
        }

        /* 企业级高质感深色卡片 */
        .card {
            background: var(--card-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-glass);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .card:hover {
            transform: translateY(-6px);
            border-color: var(--card-hover-border);
            box-shadow: var(--shadow-glow), 0 20px 40px rgba(0, 0, 0, 0.4);
            background: rgba(22, 35, 72, 0.85);
        }

        .card-header {
            margin-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding-bottom: 16px;
        }

        .product-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.2px;
        }

        .price-wrap {
            margin-bottom: 24px;
            display: flex;
            align-items: baseline;
        }

        .price {
            font-size: 2.2rem;
            font-weight: 800;
            color: #60A5FA;
            letter-spacing: -1px;
        }

        .price-period {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-left: 4px;
            font-weight: 400;
        }

        .features {
            list-style: none;
            margin-bottom: 28px;
            flex: 1;
        }

        .features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* 科技感的精致蓝色打勾标记.jmsgw.com */
        .features li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 2px;
            width: 18px;
            height: 18px;
            background-color: #3B82F6;
            mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
            -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
            mask-size: contain;
            -webkit-mask-size: contain;
            mask-repeat: no-repeat;
            -webkit-mask-repeat: no-repeat;
        }

        .btn-order {
            display: block;
            text-align: center;
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.3);
            color: #93C5FD;
            text-decoration: none;
            padding: 12px 0;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .card:hover .btn-order {
            background: var(--brand-gradient);
            border-color: transparent;
            color: white;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
        }

        /* ==========================================================================
           数据对比表格 (Data Table)
           ========================================================================== */
        .table-section {
            max-width: 1280px;
            margin: 0 auto 80px;
            padding: 0 24px;
        }

        .table-section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .table-section-title::before {
            content: "";
            display: block;
            width: 4px;
            height: 20px;
            background: var(--brand-primary);
            border-radius: 4px;
        }

        .table-wrapper {
            background: var(--card-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            overflow-x: auto;
            box-shadow: var(--shadow-glass);
            /* 自定义滚动条 */
            scrollbar-width: thin;
            scrollbar-color: rgba(59, 130, 246, 0.5) transparent;
        }

        .table-wrapper::-webkit-scrollbar {
            height: 8px;
        }
        .table-wrapper::-webkit-scrollbar-track {
            background: transparent;
        }
        .table-wrapper::-webkit-scrollbar-thumb {
            background-color: rgba(59, 130, 246, 0.5);
            border-radius: 20px;
        }

        .pricing-table {
            width: 100%;
            min-width: 800px; /* 保证移动端不会被挤扁 */
            border-collapse: collapse;
            text-align: left;
        }

        .pricing-table th, 
        .pricing-table td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            font-size: 0.95rem;
            vertical-align: middle;
        }

        .pricing-table th {
            background: rgba(22, 35, 72, 0.6);
            color: #BFDBFE;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-size: 0.85rem;
            border-bottom: 1px solid rgba(64, 128, 255, 0.2);
        }

        .pricing-table tbody tr {
            transition: var(--transition);
        }

        .pricing-table tbody tr:last-child td {
            border-bottom: none;
        }

        .pricing-table tbody tr:hover {
            background: rgba(59, 130, 246, 0.08);
        }

        .pricing-table tbody tr:hover td {
            color: var(--text-main);
        }

        /* 突出名称和价格 */
        .td-name {
            font-weight: 700;
            color: var(--text-main) !important;
        }
        .td-price {
            font-weight: 700;
            color: #60A5FA !important;
            font-size: 1.1rem;
        }
        .td-action .btn-order {
            display: inline-block;
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .pricing-table tbody tr:hover .btn-order {
            background: var(--brand-gradient);
            border-color: transparent;
            color: white;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        /* 企业级深色页脚 */
        footer {
            background: #070C1D;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            padding: 40px 20px;
            margin-top: auto;
        }

        footer p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 6px;
        }

        /* 移动端响应式微调 */
        @media (max-width: 768px) {
            .hero {
                padding: 40px 16px 24px;
            }
            .promo-code {
                flex-direction: column;
                gap: 8px;
                padding: 14px;
                width: 100%;
                border-radius: var(--radius-lg);
            }
            .promo-code span {
                margin-left: 0;
                width: 100%;
                text-align: center;
            }
            .products-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .table-section {
                padding: 0 16px;
                margin-bottom: 50px;
            }
            .pricing-table th, .pricing-table td {
                padding: 14px 16px;
            }
        }