/* roulang page: index */
:root {
            --primary: #0C7C59;
            --primary-dark: #062C22;
            --secondary: #2B9348;
            --accent: #0284C7;
            --bg-base: #F8FAFC;
            --text-main: #1E293B;
            --text-sub: #475569;
            --border-color: #E2E8F0;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-base);
            line-height: 1.75;
        }
        .container-custom {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-py {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 768px) {
            .section-py {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }
        .badge-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.875rem;
            border-radius: 9999px;
            font-size: 0.8125rem;
            font-weight: 600;
        }
        .tab-btn.active {
            background-color: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }