/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-dark: #0f172a;
            --accent-green: #10b981;
            --accent-amber: #f59e0b;
            --bg-light: #f8fafc;
            --text-main: #0f172a;
            --text-muted: #475569;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
        }
        body {
            color: var(--text-main);
            background-color: #ffffff;
            line-height: 1.75;
        }
        .hero-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(30, 58, 138, 0.92)), url('/assets/images/cf748aec16640aa0.jpg');
            background-size: cover;
            background-position: center;
        }
        .banner-mask {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.75)), url('/assets/images/b96a248a8ca7bf63.png');
            background-size: cover;
            background-position: center;
        }