/* roulang page: index */
:root {
            --primary: #6366F1;
            --neon: #06B6D4;
            --bg-dark: #0B0F19;
            --card-dark: #111827;
            --text-main: #F8FAFC;
            --text-sub: #94A3B8;
            --border-line: #1E293B;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
            line-height: 1.6;
        }
        .glow-border {
            border: 1px solid rgba(99, 102, 241, 0.25);
            box-shadow: 0 0 20px rgba(99, 102, 241, 0.08);
        }
        .glow-border:hover {
            border-color: rgba(6, 182, 212, 0.6);
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.2);
        }
        .glass-panel {
            background: rgba(17, 24, 39, 0.85);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.07);
        }
        .code-pattern {
            background-image: radial-gradient(rgba(99, 102, 241, 0.15) 1px, transparent 1px);
            background-size: 24px 24px;
        }