/* roulang page: index */
:root {
            --primary-blue: #1e40af;
            --tech-cyan: #0284c7;
            --accent-orange: #f59e0b;
            --accent-green: #10b981;
            --bg-light: #f8fafc;
            --text-dark: #0f172a;
            --text-slate: #334155;
            --border-soft: #e2e8f0;
        }

        /* 基础样式微调与响应式基准 */
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-dark);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* 数据胶囊徽章 */
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.25rem 0.875rem;
            border-radius: 9999px;
            font-size: 0.8125rem;
            font-weight: 600;
            line-height: 1.25rem;
            transition: all 0.2s ease-in-out;
        }

        /* 圆角大卡通用交互增强 */
        .glass-card {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.9);
            box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05);
            transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 35px -8px rgba(30, 64, 175, 0.1);
            border-color: rgba(147, 197, 253, 0.9);
        }

        /* 手风琴平滑过度 */
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, opacity 0.25s ease-in-out;
            opacity: 0;
        }
        .faq-answer.open {
            max-height: 400px;
            opacity: 1;
        }

body { font-family: sans-serif; }
        .dynamic-content { margin-bottom: 20px; }