/* roulang page: index */
:root {
            --brand-primary: #10b981;
            --brand-dark: #0f172a;
            --brand-accent: #3b82f6;
            --surface-card: rgba(30, 41, 59, 0.7);
            --border-glow: rgba(16, 185, 129, 0.25);
        }
        body {
            background-color: #0b1120;
            color: #f1f5f9;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .glass-panel {
            background: var(--surface-card);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 20px 40px -15px rgba(0,0,0,0.5);
        }
        .glass-card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card-hover:hover {
            transform: translateY(-4px);
            border-color: var(--brand-primary);
            box-shadow: 0 20px 30px -10px rgba(16, 185, 129, 0.2);
        }
        .coupon-cutout-left, .coupon-cutout-right {
            position: absolute;
            top: 50%;
            width: 20px;
            height: 20px;
            background-color: #0b1120;
            border-radius: 50%;
            transform: translateY(-50%);
        }
        .coupon-cutout-left { left: -10px; }
        .coupon-cutout-right { right: -10px; }
        .grid-tech-pattern {
            background-image: radial-gradient(rgba(16, 185, 129, 0.12) 1px, transparent 1px);
            background-size: 28px 28px;
        }