/* roulang page: index */
:root {
            --primary: #0F2F57;
            --secondary: #1D4ED8;
            --accent: #0D9488;
            --warning: #F59E0B;
            --bg-light: #F8FAFC;
            --bg-dark: #0A192F;
            --text-main: #0F172A;
            --text-sub: #475569;
            --border-color: #E2E8F0;
        }
        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            line-height: 1.75;
        }
        .scroll-mt-header {
            scroll-margin-top: 110px;
        }
        .shadow-custom {
            box-shadow: 0 4px 20px -2px rgba(15, 47, 87, 0.08);
        }
        .shadow-card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .shadow-card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -4px rgba(15, 47, 87, 0.12);
        }