/* roulang page: index */
:root {
            --primary: #0D5C75;
            --primary-light: #1B7598;
            --accent: #FF8C38;
            --bg-page: #F8FAFB;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-body);
            -webkit-font-smoothing: antialiased;
        }
        .text-gradient {
            background: linear-gradient(135deg, #0D5C75 0%, #1B7598 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-bg {
            background-image: linear-gradient(135deg, rgba(13, 92, 117, 0.94) 0%, rgba(10, 63, 80, 0.96) 100%), url('/assets/images/e73ab0a0f4bf5027.webp');
            background-size: cover;
            background-position: center;
        }
        .dark-section-bg {
            background-image: radial-gradient(circle at 80% 20%, rgba(27, 117, 152, 0.18) 0%, transparent 60%), linear-gradient(180deg, #0F172A 0%, #0A101D 100%);
        }
        .scroll-smooth {
            scroll-behavior: smooth;
        }