/* roulang page: index */
:root {
            --bg-base: #060B19;
            --primary-glow: #00F0FF;
            --secondary-glow: #2563EB;
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-active: rgba(0, 240, 255, 0.4);
        }
        body {
            background-color: var(--bg-base);
            color: #F8FAFC;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            overflow-x: hidden;
        }
        .glass-panel {
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            box-shadow: inset 0 1px 1px 0 rgba(255, 255, 255, 0.08);
        }
        .glass-panel:hover {
            border-color: var(--border-active);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2), inset 0 1px 1px 0 rgba(255, 255, 255, 0.15);
        }
        .text-glow {
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
        }
        .bg-grid-pattern {
            background-image: radial-gradient(rgba(0, 240, 255, 0.08) 1px, transparent 1px);
            background-size: 28px 28px;
        }
        .btn-glow {
            background: linear-gradient(135deg, #00F0FF 0%, #2563EB 100%);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-glow:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline-glow {
            border: 1px solid rgba(0, 240, 255, 0.4);
            background: rgba(0, 240, 255, 0.05);
            transition: all 0.3s ease;
        }
        .btn-outline-glow:hover {
            background: rgba(0, 240, 255, 0.15);
            border-color: #00F0FF;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }