/* roulang page: index */
:root {
            --primary: #0F172A;
            --accent: #06B6D4;
            --accent-green: #10B981;
            --bg-light: #F8FAFC;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --radius-md: 12px;
            --radius-lg: 16px;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.75;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.25;
            letter-spacing: -0.015em;
        }
        .glow-hover:hover {
            box-shadow: 0 0 25px -5px rgba(6, 182, 212, 0.4);
            border-color: rgba(6, 182, 212, 0.8);
        }
        .glass-panel {
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }