/* roulang page: index */
:root {
            --brand-primary: #6366f1;
            --brand-dark: #0b0f19;
            --brand-surface: #111827;
            --brand-card: #1f2937;
            --brand-accent: #f59e0b;
            --brand-glow: rgba(99, 102, 241, 0.35);
        }
        body {
            background-color: var(--brand-dark);
            color: #e5e7eb;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .hero-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
        }
        .hero-glow {
            background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.25) 0%, rgba(11, 15, 25, 0) 70%);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 30px -10px rgba(99, 102, 241, 0.25);
            border-color: rgba(99, 102, 241, 0.5);
        }
        .hide-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .hide-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

/* roulang page: category1 */
:root {
            --brand-primary: #6366f1;
            --brand-dark: #0b0f19;
            --brand-surface: #111827;
            --brand-card: #1f2937;
            --brand-accent: #f59e0b;
            --brand-glow: rgba(99, 102, 241, 0.35);
        }
        body {
            background-color: var(--brand-dark);
            color: #e5e7eb;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .hero-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
        }
        .hero-glow {
            background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.25) 0%, rgba(11, 15, 25, 0) 70%);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 30px -10px rgba(99, 102, 241, 0.25);
            border-color: rgba(99, 102, 241, 0.5);
        }
        .glass-panel {
            background: rgba(17, 24, 39, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }