/* roulang page: index */
:root {
            --brand-primary: #10B981;
            --brand-primary-hover: #059669;
            --brand-accent: #F97316;
            --brand-accent-hover: #EA580C;
            --bg-body: #F8FAFC;
            --text-title: #0F172A;
            --text-body: #475569;
            --text-muted: #94A3B8;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-body);
            color: var(--text-body);
            font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, sans-serif;
            line-height: 1.75;
        }
        .hero-bg-overlay {
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.82) 100%), url('/assets/images/387554dbee586731.webp');
            background-size: cover;
            background-position: center;
        }
        .btn-cta-primary {
            background-color: var(--brand-accent);
            color: #ffffff;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-cta-primary:hover {
            background-color: var(--brand-accent-hover);
            transform: scale(1.02);
        }
        .btn-cta-primary:active {
            transform: scale(0.98);
        }
        .btn-cta-secondary {
            border: 1px solid var(--brand-primary);
            color: var(--brand-primary);
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-cta-secondary:hover {
            background-color: rgba(16, 185, 129, 0.08);
            color: var(--brand-primary-hover);
        }
        .glass-header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }