/* roulang page: index */
:root {
            --primary: #1E293B;
            --accent: #0EA5E9;
            --warm: #F59E0B;
            --bg-light: #F8FAFC;
            --text-main: #334155;
        }
        body {
            color: var(--text-main);
            background-color: var(--bg-light);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .hero-overlay {
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.75) 0%, rgba(15, 23, 42, 0.92) 100%);
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .dark-glass {
            background: rgba(30, 41, 59, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(51, 65, 85, 0.6);
        }