/* roulang page: index */
:root {
            --bg-base: #060913;
            --bg-deep: #0b132b;
            --glass-card: rgba(17, 24, 39, 0.72);
            --glass-border: rgba(56, 189, 248, 0.18);
            --brand-cyan: #00f2fe;
            --brand-blue: #4facfe;
            --laser-green: #10b981;
            --text-high: #f8fafc;
            --text-muted: #94a3b8;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-high);
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            overflow-x: hidden;
        }

        .font-mono-code {
            font-family: "JetBrains Mono", Menlo, Consolas, Monaco, monospace;
        }

        .glass-panel {
            background: var(--glass-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .glass-panel:hover {
            border-color: rgba(56, 189, 248, 0.45);
            box-shadow: 0 10px 30px -10px rgba(0, 242, 254, 0.2);
            transform: translateY(-2px);
        }

        .btn-glow {
            background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
            box-shadow: 0 0 20px rgba(0, 242, 254, 0.35);
            transition: all 0.25s ease-in-out;
        }

        .btn-glow:hover {
            box-shadow: 0 0 30px rgba(0, 242, 254, 0.65);
            transform: translateY(-2px);
        }

        .pulse-indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--laser-green);
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: pulse-ring 2s infinite cubic-bezier(0.45, 0, 0.55, 1);
        }

        @keyframes pulse-ring {
            0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
            100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

        details summary::-webkit-details-marker {
            display: none;
        }
        details summary {
            list-style: none;
        }