/* roulang page: index */
:root {
            --primary: #5B21B6;
            --primary-dark: #4C1D95;
            --accent-cyan: #06B6D4;
            --accent-rose: #F43F5E;
            --text-main: #0F172A;
            --text-muted: #475569;
            --bg-light: #F8FAFC;
        }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--text-main); background-color: var(--bg-light); }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(76, 29, 149, 0.88) 100%), url('/assets/images/a9cf2750e91c7275.png') center/cover no-repeat;
        }
        .circuit-pattern {
            background-image: radial-gradient(rgba(6, 182, 212, 0.15) 1px, transparent 1px);
            background-size: 24px 24px;
        }