/* roulang page: index */
:root {
            --primary: #0D9488;
            --primary-dark: #0F766E;
            --accent: #F97316;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --border-soft: #E2E8F0;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #334155;
            background-color: #FFFFFF;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(13, 148, 136, 0.82) 100%);
        }
        .soft-card-shadow {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
        }
        .soft-card-shadow:hover {
            box-shadow: 0 25px 30px -5px rgba(13, 148, 136, 0.12), 0 10px 12px -5px rgba(0, 0, 0, 0.04);
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }