/* roulang page: index */
:root {
            --bg-main: #070d18;
            --bg-secondary: #0b1528;
            --primary: #00d2ff;
            --primary-hover: #38bdf8;
            --accent: #2563eb;
            --border-glass: rgba(255, 255, 255, 0.08);
            --card-glass: rgba(15, 23, 42, 0.65);
        }
        body {
            background-color: var(--bg-main);
            color: #94a3b8;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .glass-panel {
            background: var(--card-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
        }
        .glass-card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card-hover:hover {
            border-color: rgba(0, 210, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 210, 255, 0.08);
        }
        .btn-glow {
            background: linear-gradient(135deg, #00d2ff 0%, #2563eb 100%);
            box-shadow: 0 0 20px rgba(0, 210, 255, 0.35);
            transition: all 0.3s ease;
        }
        .btn-glow:hover {
            box-shadow: 0 0 30px rgba(0, 210, 255, 0.6);
            transform: translateY(-1px);
        }
        .text-glow {
            text-shadow: 0 0 16px rgba(0, 210, 255, 0.4);
        }
        .glow-line {
            background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.3), transparent);
        }