/* roulang page: index */
:root {
            --primary: #0f766e;
            --primary-light: #14b8a6;
            --secondary: #1e293b;
            --accent: #f59e0b;
            --bg-base: #f8fafc;
            --text-dark: #0f172a;
            --text-muted: #64748b;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-dark);
            overflow-x: hidden;
        }
        .smooth-scroll {
            scroll-behavior: smooth;
        }
        .hero-bg {
            background-image: linear-gradient(to bottom, rgba(15, 23, 42, 0.88), rgba(2, 6, 23, 0.94)), url('/assets/images/d2af357879fdc0dc.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-bg {
            background-image: linear-gradient(135deg, rgba(15, 118, 110, 0.95), rgba(19, 78, 74, 0.98)), url('/assets/images/996fa53bc5630846.webp');
            background-size: cover;
            background-position: center;
        }