/* roulang page: index */
:root {
            --primary: #0D9488;
            --primary-hover: #0f766e;
            --accent: #F59E0B;
            --dark: #0F172A;
            --light-bg: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #1E293B;
            background-color: #FFFFFF;
        }
        .hero-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
        }
        @media (max-width: 768px) {
            .hero-diagonal {
                clip-path: none;
            }
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .accordion-open .accordion-content {
            max-height: 250px;
        }
        .accordion-open .accordion-icon {
            transform: rotate(180deg);
        }