/* roulang page: index */
:root {
            --bg-deep: #060B18;
            --primary-glow: rgba(0, 242, 254, 0.45);
            --blue-glow: rgba(30, 107, 255, 0.55);
        }
        body {
            background-color: var(--bg-deep);
            color: #E2E8F0;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #1E6BFF 0%, #00F2FE 100%);
            box-shadow: 0 0 25px -5px rgba(0, 242, 254, 0.45);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 35px 0 rgba(0, 242, 254, 0.7);
            filter: brightness(1.1);
            transform: translateY(-1px);
        }
        .glow-btn:active {
            transform: translateY(1px);
        }
        .glass-card {
            background: rgba(15, 23, 42, 0.65);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: inset 0 1px 1px 0 rgba(255, 255, 255, 0.08);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }
        .glass-card:hover {
            border-color: rgba(0, 242, 254, 0.4);
            box-shadow: 0 12px 30px -10px rgba(0, 242, 254, 0.18), inset 0 1px 1px 0 rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        .circuit-bg {
            background-image: radial-gradient(rgba(30, 107, 255, 0.15) 1px, transparent 1px);
            background-size: 32px 32px;
        }