/* roulang page: index */
:root {
            --primary: #0F172A;
            --accent: #EA580C;
            --bg-alt: #F8FAFC;
            --border-ui: #E2E8F0;
        }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif; }
        .hero-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.96)), url('/assets/images/01b7a11a58bbbc44.webp');
            background-size: cover;
            background-position: center;
        }
        .pattern-grid {
            background-size: 24px 24px;
            background-image: linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
        }