/* roulang page: index */
:root {
            --primary-cyan: #00E5FF;
            --primary-glow: rgba(0, 229, 255, 0.35);
            --border-glass: rgba(0, 229, 255, 0.18);
            --bg-glass: rgba(11, 21, 40, 0.75);
        }
        body {
            background-color: #060B18;
            color: #94A3B8;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glass-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            transition: all 0.3s ease;
        }
        .glass-panel:hover {
            border-color: rgba(0, 229, 255, 0.5);
            box-shadow: 0 0 25px rgba(0, 229, 255, 0.12);
        }
        .glow-btn {
            background: linear-gradient(135deg, #00E5FF 0%, #0088FF 100%);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
            transition: all 0.25s ease;
        }
        .glow-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.6);
        }
        .glow-border-btn {
            border: 1px solid rgba(0, 229, 255, 0.5);
            background: rgba(0, 229, 255, 0.05);
            transition: all 0.25s ease;
        }
        .glow-border-btn:hover {
            background: rgba(0, 229, 255, 0.15);
            border-color: #00E5FF;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
        }
        .tech-grid-bg {
            background-image: radial-gradient(rgba(0, 229, 255, 0.08) 1px, transparent 1px);
            background-size: 32px 32px;
        }