:root {
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
    --blur-val: blur(16px);
    --text-main: #1E293B;
    --text-muted: #475569;
    --accent-blue: #3B82F6;
    --accent-purple: #8B5CF6;
    --accent-green: #10B981;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif; color: var(--text-main); line-height: 1.6; overflow-x: hidden; background: #E0EAFC; background: linear-gradient(135deg, #E0EAFC 0%, #CFDEF3 50%, #E2D1F9 100%); background-attachment: fixed; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* 玻璃拟物面板通用类 */
.glass-panel { background: var(--glass-bg); backdrop-filter: var(--blur-val); -webkit-backdrop-filter: var(--blur-val); border: 1px solid var(--glass-border); box-shadow: var(--glass-shadow); border-radius: 16px; }

/* 导航 */
.header { position: sticky; top: 0; z-index: 1000; margin: 10px 20px; border-radius: 20px; background: rgba(255, 255, 255, 0.7); backdrop-filter: blur(20px); border: 1px solid rgba(255, 255, 255, 0.6); box-shadow: 0 4px 15px rgba(0,0,0,0.05); }
.nav-wrap { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 64px; padding: 0 30px; }
.logo { font-size: 20px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 10px; background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.logo img { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 15px; font-weight: 600; color: var(--text-muted); padding: 5px 10px; border-radius: 8px; }
.nav-links a:hover, .nav-links a.active { color: var(--accent-blue); background: rgba(255,255,255,0.5); }

.container { max-width: 1200px; margin: 0 auto; padding: 60px 20px; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 30px; border-radius: 30px; font-size: 16px; font-weight: 700; cursor: pointer; transition: 0.3s; box-shadow: 0 4px 15px rgba(0,0,0,0.05); }
.btn-primary { background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)); color: #FFF; border: none; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3); }
.btn-outline { background: rgba(255, 255, 255, 0.5); color: var(--text-main); border: 1px solid rgba(255, 255, 255, 0.8); backdrop-filter: blur(5px); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.9); transform: translateY(-3px); }

/* 首屏 Hero 区 (模拟浏览器窗口) */
.hero { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 80px 20px; max-width: 1000px; margin: 40px auto; position: relative; }
.browser-window { width: 100%; padding: 40px 60px; position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; }
.browser-dots { position: absolute; top: 15px; left: 20px; display: flex; gap: 8px; }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

/* 搜索栏与AI入口 */
.search-container { width: 100%; max-width: 600px; margin: 30px 0; position: relative; display: flex; align-items: center; background: rgba(255, 255, 255, 0.8); border-radius: 30px; padding: 5px; box-shadow: inset 0 2px 5px rgba(0,0,0,0.02), 0 5px 15px rgba(0,0,0,0.05); border: 1px solid rgba(255,255,255,1); }
.search-container input { flex: 1; background: transparent; border: none; outline: none; padding: 12px 20px; font-size: 16px; color: var(--text-main); }
.ai-entry { background: linear-gradient(135deg, #FF9A9E, #FECFEF); padding: 10px 20px; border-radius: 25px; font-weight: bold; color: #FFF; font-size: 14px; display: flex; align-items: center; gap: 5px; cursor: pointer; box-shadow: 0 4px 10px rgba(255, 154, 158, 0.3); }

.hero-content h1 { font-size: 48px; font-weight: 900; margin-bottom: 10px; background: linear-gradient(to right, #1E293B, #3B82F6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-content .subtitle { font-size: 20px; color: var(--accent-purple); font-weight: 600; margin-bottom: 20px; }
.hero-content .desc { font-size: 15px; color: var(--text-muted); margin-bottom: 30px; max-width: 500px; line-height: 1.8; }
.hero-btns { display: flex; gap: 20px; margin-bottom: 40px; }
.hero-visual img { border-radius: 12px; margin-top: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); border: 2px solid rgba(255,255,255,0.6); }

/* 模块标题 */
.sec-title { text-align: center; font-size: 32px; font-weight: 800; color: var(--text-main); margin-bottom: 50px; text-shadow: 0 2px 4px rgba(255,255,255,0.5); }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.f-box { padding: 30px 20px; text-align: center; transition: 0.3s; }
.f-box:hover { transform: translateY(-5px); background: rgba(255,255,255,0.8); }
.f-box img { width: 48px; height: 48px; margin: 0 auto 15px; filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1)); }
.f-box h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text-main); }
.f-box p { font-size: 13px; color: var(--text-muted); }

/* 功能详情 (悬浮视窗) */
.detail-box { display: flex; align-items: center; gap: 50px; margin-bottom: 60px; padding: 40px; }
.detail-box:nth-child(even) { flex-direction: row-reverse; }
.d-text { flex: 1; }
.d-text h3 { font-size: 28px; font-weight: 800; color: var(--text-main); margin-bottom: 15px; }
.d-text p { font-size: 15px; color: var(--text-muted); margin-bottom: 25px; line-height: 1.8; }
.d-data { display: inline-block; padding: 8px 16px; background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); font-weight: 700; border-radius: 8px; border: 1px solid rgba(59, 130, 246, 0.2); }
.d-visual { flex: 1.2; position: relative; }
.d-visual img { border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.08); border: 2px solid rgba(255,255,255,0.8); }

/* 浏览器对比 */
.compare-box { padding: 40px; overflow-x: auto; }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 18px 25px; border-bottom: 1px solid rgba(0,0,0,0.05); }
.compare-table th { color: var(--text-muted); font-size: 14px; font-weight: 700; background: rgba(255,255,255,0.4); }
.compare-table td { font-size: 14px; color: var(--text-main); }
.compare-table .hl { font-weight: 800; color: var(--accent-blue); background: rgba(255,255,255,0.6); }
.compare-table tr:last-child td { border-bottom: none; }

/* 下载版本区 */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { padding: 40px 30px; text-align: center; transition: 0.3s; display: flex; flex-direction: column; }
.dl-card:hover { transform: translateY(-8px); background: rgba(255,255,255,0.8); }
.dl-card.rec { border: 2px solid var(--accent-purple); box-shadow: 0 10px 30px rgba(139, 92, 246, 0.15); }
.dl-card h3 { font-size: 22px; font-weight: 800; color: var(--text-main); margin-bottom: 15px; }
.dl-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; line-height: 1.6; flex: 1; }
.dl-card .btn { width: 100%; }

/* 数据背书 */
.data-sec { margin: 80px 20px; padding: 50px; text-align: center; }
.data-inner { display: flex; justify-content: space-around; max-width: 1000px; margin: 0 auto; }
.data-item h4 { font-size: 48px; font-weight: 900; background: linear-gradient(135deg, var(--accent-blue), var(--accent-green)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 10px; line-height: 1; }
.data-item p { font-size: 16px; font-weight: 600; color: var(--text-muted); }

/* FAQ */
.faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 15px; }
.faq-box { padding: 25px 30px; transition: 0.3s; }
.faq-box:hover { background: rgba(255,255,255,0.8); }
.faq-box h4 { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.faq-box h4::before { content: ''; width: 8px; height: 8px; background: var(--accent-blue); border-radius: 50%; }
.faq-box p { font-size: 14px; color: var(--text-muted); line-height: 1.6; padding-left: 18px; }

/* Footer */
.footer { padding: 40px 20px; text-align: center; color: var(--text-muted); font-size: 14px; margin-top: 60px; }