/* roulang page: index */
:root {
            --cyber-bg: #090D16;
            --cyber-panel: #0F172A;
            --cyber-neon: #00FF9D;
            --cyber-purple: #8A2BE2;
        }
        body {
            background-color: var(--cyber-bg);
            color: #E2E8F0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .neon-glow-btn {
            box-shadow: 0 0 20px rgba(0, 255, 157, 0.4);
        }
        .neon-glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 255, 157, 0.7);
        }
        .neon-border {
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
        }
        .neon-border:hover {
            border-color: rgba(0, 255, 157, 0.5);
            box-shadow: 0 0 20px rgba(0, 255, 157, 0.1);
        }
        .text-gradient {
            background: linear-gradient(135deg, #00FF9D 0%, #38BDF8 50%, #A855F7 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }