/* roulang page: index */
:root {
            --color-bg: #0A0E1A;
            --color-panel: rgba(16, 23, 42, 0.75);
            --color-border: rgba(255, 255, 255, 0.08);
            --color-primary: #0066FF;
            --color-cyan: #00F2FE;
            --color-text-main: #FFFFFF;
            --color-text-sub: #94A3B8;
        }
        body {
            background-color: var(--color-bg);
            color: var(--color-text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .glass-panel {
            background: var(--color-panel);
            backdrop-filter: blur(16px);
            border: 1px solid var(--color-border);
        }
        .glass-panel:hover {
            border-color: rgba(0, 242, 254, 0.35);
        }
        .btn-glow {
            background: linear-gradient(135deg, #0066FF 0%, #00F2FE 100%);
            box-shadow: 0 0 15px rgba(0, 242, 254, 0.35);
            transition: all 0.25s ease-in-out;
        }
        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(0, 242, 254, 0.65);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all 0.2s ease;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #00F2FE;
            color: #00F2FE;
        }
        .neon-text-gradient {
            background: linear-gradient(135deg, #FFFFFF 20%, #00F2FE 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .clip-slant {
            clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
        }