/* roulang page: index */
:root {
            --primary: #0F2D6B;
            --primary-dark: #0A1E4A;
            --primary-light: #1E3A8A;
            --accent: #0284C7;
            --accent-gold: #D97706;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(10, 30, 74, 0.92) 0%, rgba(15, 45, 107, 0.85) 60%, rgba(2, 132, 199, 0.75) 100%);
        }
        .text-shadow-sm {
            text-shadow: 0 2px 4px rgba(0,0,0,0.4);
        }
        .transition-all-300 {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }