/* roulang page: index */
:root {
            --primary: #1E40AF;
            --secondary: #0EA5E9;
            --bg-canvas: #F8FAFC;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-ui: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-canvas);
            color: var(--text-body);
            letter-spacing: 0;
            line-height: 1.68;
        }
        .hero-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
        }
        @media (max-width: 1023px) {
            .hero-diagonal {
                clip-path: none;
            }
        }