/* roulang page: index */
:root {
            --bg-base: #0D1117;
            --bg-card: #161B22;
            --border-color: #30363D;
            --accent-green: #00FF9D;
            --accent-blue: #0EA5E9;
            --text-main: #F0F6FC;
            --text-muted: #8B949E;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .matrix-glow {
            box-shadow: 0 0 25px -5px rgba(0, 255, 157, 0.15);
        }
        .border-glow:hover {
            border-color: rgba(0, 255, 157, 0.4);
            box-shadow: 0 0 15px -3px rgba(0, 255, 157, 0.2);
        }
        .code-pattern {
            background-image: radial-gradient(rgba(48, 54, 61, 0.4) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .scanline {
            background: linear-gradient(180deg, rgba(0,255,157,0) 0%, rgba(0,255,157,0.03) 50%, rgba(0,255,157,0) 100%);
        }