/* roulang page: index */
:root {
            --bg-base: #0B0F19;
            --bg-card: rgba(15, 23, 42, 0.72);
            --border-card: rgba(255, 255, 255, 0.08);
            --primary-glow: #38BDF8;
            --emerald-pulse: #10B981;
            --accent-gradient: linear-gradient(135deg, #00F2FE 0%, #2563EB 100%);
        }

        body {
            background-color: var(--bg-base);
            color: #F8FAFC;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }

        .glass-panel {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-card);
        }

        .glass-card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card-hover:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 12px 32px -8px rgba(37, 99, 235, 0.25);
        }

        .glow-btn {
            background: var(--accent-gradient);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
        }

        .glow-btn-alt {
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #38BDF8;
            transition: all 0.3s ease;
        }
        .glow-btn-alt:hover {
            background: rgba(56, 189, 248, 0.1);
            border-color: #38BDF8;
            box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
        }

        .clip-hero-band {
            clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
        }

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