/* roulang page: index */
:root {
            --primary: #10B981;
            --primary-dark: #059669;
            --secondary: #F97316;
            --bg-light: #F8FAFC;
            --card-shadow: 0 10px 25px -5px rgba(16, 185, 129, 0.08);
            --card-hover-shadow: 0 20px 30px -10px rgba(16, 185, 129, 0.18);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: #1E293B;
        }
        .hero-banner-bg {
            background-image: linear-gradient(rgba(4, 120, 87, 0.88), rgba(2, 44, 34, 0.94)), url('/assets/images/caa2eaf9e20d5a5d.png');
            background-size: cover;
            background-position: center;
        }
        .deep-gradient-bg {
            background: linear-gradient(135deg, #064E3B 0%, #022C22 100%);
        }
        .card-custom {
            box-shadow: var(--card-shadow);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-hover-shadow);
        }