/* roulang page: index */
:root {
            --primary: #0f766e;
            --primary-light: #14b8a6;
            --accent: #f97316;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 118, 110, 0.85) 100%);
        }
        .custom-card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .custom-card-shadow:hover {
            box-shadow: 0 16px 32px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.08);
            transform: translateY(-4px);
        }
        .tab-btn.active {
            background-color: #0f766e;
            color: #ffffff;
            border-color: #0f766e;
        }