/* roulang page: index */
:root {
            --color-dark: #1A2B49;
            --color-orange: #E65100;
            --color-light: #F4F6F9;
            --color-success: #0D8A5B;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #FFFFFF;
            color: #2C3E50;
            line-height: 1.75;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(26, 43, 73, 0.95) 0%, rgba(15, 23, 42, 0.88) 100%);
        }
        .metric-card-border {
            border-left: 3px solid #E65100;
        }