/* roulang page: index */
:root {
            --primary: #0D9488;
            --primary-hover: #0F766E;
            --accent: #EA580C;
            --accent-hover: #C2410C;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-body);
            background-color: #FFFFFF;
            scroll-behavior: smooth;
        }
        .text-main { color: var(--text-main); }
        .text-muted { color: var(--text-muted); }
        .bg-light { background-color: var(--bg-light); }
        .transition-card {
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .transition-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
        }
        .countdown-circle {
            background: conic-gradient(#0D9488 78%, #E2E8F0 0deg);
        }