/* roulang page: index */
:root {
            --brand-primary: #0F5132;
            --brand-primary-light: #059669;
            --brand-accent: #EA580C;
            --brand-dark: #0F172A;
            --brand-surface: #F4F7F5;
            --brand-border: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            background-color: #FAFAFA;
            color: #1E293B;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(15, 81, 50, 0.94) 0%, rgba(15, 23, 42, 0.92) 100%);
        }
        .card-shadow {
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .countdown-pulse {
            animation: pulse-orange 2s infinite;
        }
        @keyframes pulse-orange {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.75; }
        }