/* roulang page: index */
:root {
            --color-primary: #0284c7;
            --color-primary-dark: #0369a1;
            --color-accent: #10b981;
            --color-orange: #f97316;
            --color-dark: #0b0f19;
            --color-slate: #0f172a;
            --color-card-bg: #ffffff;
            --color-border: #e2e8f0;
            --color-text-main: #1e293b;
            --color-text-muted: #64748b;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--color-text-main);
            background-color: #f8fafc;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        .text-gradient {
            background: linear-gradient(135deg, #0284c7 0%, #10b981 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.85)), url('/assets/images/cec4abb0e60ff972.jpg');
            background-size: cover;
            background-position: center;
        }
        .card-hover {
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
        }
        .metric-card {
            background: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }