/* roulang page: index */
:root {
            --primary-dark: #0A1118;
            --primary-navy: #0F2038;
            --accent-teal: #008080;
            --accent-cyan: #0EA5E9;
            --bg-base: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-body);
            -webkit-font-smoothing: antialiased;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(10, 17, 24, 0.94) 0%, rgba(15, 32, 56, 0.92) 100%);
        }
        .glow-card {
            box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .glow-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px -4px rgba(0, 128, 128, 0.12);
        }