/* roulang page: index */
:root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --secondary: #f97316;
            --bg-light: #f8fafc;
            --text-main: #0f172a;
            --text-muted: #475569;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            color: var(--text-main);
            background-color: #ffffff;
            scroll-behavior: smooth;
        }
        .section-py {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (min-width: 1024px) {
            .section-py {
                padding-top: 6.5rem;
                padding-bottom: 6.5rem;
            }
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -4px rgba(79, 70, 229, 0.12);
        }
        .hero-bg {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 27, 75, 0.88) 100%), url('/assets/images/cd28c418a6ce83b4.webp') center/cover no-repeat;
        }
        .workflow-bg {
            background: linear-gradient(rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.95)), url('/assets/images/2f124e0038a1d78e.webp') center/cover no-repeat;
        }
        .cta-banner-bg {
            background: linear-gradient(135deg, #3730a3 0%, #4f46e5 50%, #06b6d4 100%);
        }