/* roulang page: index */
:root {
            --primary: #F95738;
            --primary-hover: #e04627;
            --dark: #111827;
            --accent: #10B981;
            --bg-light: #F8FAFC;
            --text-main: #1F2937;
            --text-muted: #4B5563;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .text-stroke-title {
            letter-spacing: -0.02em;
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
        }
        .accordion-content.active {
            max-height: 500px;
            transition: max-height 0.3s ease-in-out;
        }
        .rotate-arrow {
            transition: transform 0.25s ease;
        }
        .rotate-arrow.active {
            transform: rotate(180deg);
        }