/* roulang page: index */
:root {
            --brand-primary: #10B981;
            --brand-accent: #F59E0B;
            --bg-dark: #09090B;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }
        .hero-mask {
            background: linear-gradient(180deg, rgba(9, 9, 11, 0.72) 0%, rgba(9, 9, 11, 0.94) 100%);
        }
        .card-surface {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-surface:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -8px rgba(16, 185, 129, 0.15);
        }