/* roulang page: index */
:root {
            --color-primary: #0F2937;
            --color-accent: #0284C7;
            --color-warning: #D97706;
            --color-bg-light: #F8FAFC;
            --color-text-main: #1E293B;
            --color-text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        .hero-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% calc(100% - 3.5vw), 0 100%);
        }
        .text-balance {
            text-wrap: balance;
        }
        .transition-base {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -6px rgba(15, 41, 55, 0.12);
        }