/* roulang page: index */
:root {
            --bg-main: #0F1117;
            --bg-card: #181C26;
            --bg-card-hover: #222838;
            --primary: #7C3AED;
            --primary-hover: #6D28D9;
            --cyan: #06B6D4;
            --amber: #F59E0B;
            --text-main: #F9FAFB;
            --text-muted: #94A3B8;
            --border-line: #2D3748;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-main);
            color: var(--text-main);
        }
        body {
            overflow-x: hidden;
            line-height: 1.7;
        }
        .neon-shadow {
            box-shadow: 0 10px 25px -5px rgba(124, 58, 237, 0.2), 0 8px 10px -6px rgba(6, 182, 212, 0.15);
        }
        .border-glow {
            border: 1px solid rgba(124, 58, 237, 0.28);
        }
        .border-glow:hover {
            border-color: rgba(6, 182, 212, 0.6);
            transform: translateY(-4px);
            transition: all 0.3s ease;
        }
        .text-gradient {
            background: linear-gradient(135deg, #F9FAFB 30%, #06B6D4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .text-gradient-purple {
            background: linear-gradient(135deg, #C084FC 0%, #7C3AED 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }