/* roulang page: index */
:root {
            --primary: #1E40AF;
            --secondary: #0284C7;
            --accent: #0D9488;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            background-color: #FFFFFF;
            color: var(--text-body);
        }
        .hero-banner-bg {
            background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(240, 249, 255, 0.92) 100%), url('/assets/images/ca6a75f4c00f7f46.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-dark-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.95)), url('/assets/images/744865f54786a43d.webp');
            background-size: cover;
            background-position: center;
        }