/* roulang page: index */
:root {
            --primary: #15803D;
            --primary-hover: #166534;
            --accent: #84CC16;
            --dark: #0F172A;
            --bg-light: #F8FAFC;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        .hero-pattern {
            background-image: radial-gradient(rgba(21, 128, 61, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .pitch-lines {
            background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%),
                        repeating-linear-gradient(90deg, transparent, transparent 79px, rgba(255,255,255,0.05) 80px);
        }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.2s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.open {
            max-height: 280px;
            opacity: 1;
        }