/* roulang page: index */
:root {
            --primary: #10b981;
            --primary-dark: #064e3b;
            --accent-orange: #f97316;
            --accent-blue: #0ea5e9;
            --text-main: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --border-color: #e2e8f0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            color: var(--text-main);
            background-color: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .smooth-scroll {
            scroll-behavior: smooth;
        }
        .header-glass {
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
        }
        .hero-banner-bg {
            background-image: linear-gradient(to bottom, rgba(15, 23, 42, 0.82), rgba(6, 78, 59, 0.88)), url('/assets/images/b95e4df8c8ab562d.jpg');
            background-size: cover;
            background-position: center;
        }
        .card-hover-trans {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover-trans:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.12);
        }