/* ============================================
   麻豆 全新原创CSS主题
   配色方案：深紫(#1A0A2E) + 品红(#D946A8) + 暖粉(#FF6B9D) + 浅金(#FFD93D)
   布局：左右分栏Hero + 瀑布流视频 + 卡片网格
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --bg-deep: #1A0A2E;
  --bg-card: #241442;
  --bg-card2: #2D1B54;
  --accent: #D946A8;
  --accent2: #FF6B9D;
  --gold: #FFD93D;
  --text-main: #F0E6FF;
  --text-dim: #A89CC8;
  --text-bright: #FFFFFF;
  --grad-main: linear-gradient(135deg, #D946A8 0%, #FF6B9D 50%, #FFD93D 100%);
  --grad-dark: linear-gradient(180deg, #1A0A2E 0%, #0D0519 100%);
  --radius: 14px;
  --shadow: 0 8px 32px rgba(217,70,168,0.15);
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body { font-family: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif; background: var(--bg-deep); color: var(--text-main); line-height:1.7; overflow-x:hidden; }
a { color: var(--accent2); text-decoration:none; transition: color .25s; }
a:hover { color: var(--gold); }
img { max-width:100%; height:auto; display:block; }
ul,ol { list-style:none; }

/* === 容器 === */
.container { max-width:1240px; margin:0 auto; padding:0 24px; }

/* === 顶部导航 - 毛玻璃效果 === */
.site-nav { position:fixed; top:0; left:0; right:0; z-index:999; background:rgba(26,10,46,0.85); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px); border-bottom:1px solid rgba(217,70,168,0.2); transition:background .3s; }
.site-nav.scrolled { background:rgba(13,5,25,0.95); }
.nav-wrap { display:flex; align-items:center; justify-content:space-between; height:68px; max-width:1240px; margin:0 auto; padding:0 24px; }
.nav-brand { display:flex; align-items:center; gap:10px; }
.nav-brand img { width:40px; height:40px; border-radius:8px; }
.nav-brand-text { font-size:1.25rem; font-weight:700; background:var(--grad-main); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.nav-links { display:flex; align-items:center; gap:28px; }
.nav-links a { color:var(--text-dim); font-size:.95rem; font-weight:500; position:relative; padding:4px 0; }
.nav-links a::after { content:''; position:absolute; bottom:-2px; left:0; width:0; height:2px; background:var(--grad-main); transition:width .3s; border-radius:2px; }
.nav-links a:hover, .nav-links a.active { color:var(--text-bright); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }

/* 搜索框 */
.search-bar { position:relative; }
.search-bar input { width:200px; height:36px; border:1px solid rgba(217,70,168,0.3); border-radius:20px; background:rgba(255,255,255,0.06); color:var(--text-main); padding:0 36px 0 16px; font-size:.85rem; outline:none; transition:border-color .3s, width .3s; }
.search-bar input:focus { border-color:var(--accent); width:260px; }
.search-bar button { position:absolute; right:4px; top:50%; transform:translateY(-50%); background:none; border:none; color:var(--accent2); cursor:pointer; font-size:1.1rem; padding:6px; }

/* 移动端菜单 */
.menu-toggle { display:none; background:none; border:none; color:var(--text-main); font-size:1.5rem; cursor:pointer; }
.mobile-menu { display:none; position:fixed; top:68px; left:0; right:0; bottom:0; background:rgba(13,5,25,0.98); z-index:998; flex-direction:column; align-items:center; padding-top:40px; gap:24px; }
.mobile-menu.open { display:flex; }
.mobile-menu a { color:var(--text-main); font-size:1.2rem; font-weight:500; }

/* === Hero区域 - 左右分栏布局 === */
.hero { margin-top:68px; min-height:calc(100vh - 68px); display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:40px; padding:60px 24px; max-width:1240px; margin-left:auto; margin-right:auto; position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-50%; right:-30%; width:80%; height:200%; background:radial-gradient(ellipse, rgba(217,70,168,0.12) 0%, transparent 70%); pointer-events:none; }
.hero-content { position:relative; z-index:2; }
.hero-badge { display:inline-flex; align-items:center; gap:6px; background:rgba(217,70,168,0.15); border:1px solid rgba(217,70,168,0.3); border-radius:24px; padding:6px 18px; font-size:.8rem; color:var(--accent2); margin-bottom:20px; }
.hero-badge i { font-size:.7rem; }
.hero h1 { font-size:2.8rem; font-weight:800; line-height:1.25; margin-bottom:16px; }
.hero h1 .highlight { background:var(--grad-main); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero-desc { font-size:1.05rem; color:var(--text-dim); margin-bottom:32px; line-height:1.8; }
.hero-btns { display:flex; gap:16px; flex-wrap:wrap; }
.btn-primary { display:inline-flex; align-items:center; gap:8px; background:var(--grad-main); color:#fff; padding:14px 32px; border-radius:30px; font-weight:600; font-size:1rem; border:none; cursor:pointer; transition:transform .2s, box-shadow .2s; box-shadow:0 4px 20px rgba(217,70,168,0.35); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 30px rgba(217,70,168,0.5); color:#fff; }
.btn-outline { display:inline-flex; align-items:center; gap:8px; background:transparent; color:var(--accent2); padding:14px 32px; border-radius:30px; font-weight:600; font-size:1rem; border:2px solid rgba(217,70,168,0.4); cursor:pointer; transition:all .2s; }
.btn-outline:hover { background:rgba(217,70,168,0.1); border-color:var(--accent); color:var(--accent); }
.hero-visual { position:relative; z-index:2; }
.hero-img-wrap { position:relative; border-radius:20px; overflow:hidden; box-shadow:0 20px 60px rgba(0,0,0,0.4); }
.hero-img-wrap img { width:100%; display:block; }
.hero-float-card { position:absolute; background:rgba(36,20,66,0.9); backdrop-filter:blur(12px); border:1px solid rgba(217,70,168,0.2); border-radius:12px; padding:12px 18px; }
.hero-float-card.card-views { bottom:20px; left:20px; display:flex; align-items:center; gap:10px; }
.hero-float-card.card-live { top:20px; right:20px; display:flex; align-items:center; gap:8px; }
.live-dot { width:8px; height:8px; border-radius:50%; background:#FF4444; animation:pulse-dot 1.5s infinite; }
@keyframes pulse-dot { 0%,100%{opacity:1;} 50%{opacity:.4;} }
.hero-stats { display:flex; gap:32px; margin-top:36px; }
.stat-item { text-align:center; }
.stat-num { font-size:1.6rem; font-weight:800; background:var(--grad-main); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:.78rem; color:var(--text-dim); margin-top:2px; }

/* === 通用板块标题 === */
.section { padding:80px 0; }
.section-head { text-align:center; margin-bottom:50px; }
.section-tag { display:inline-block; background:rgba(217,70,168,0.12); color:var(--accent2); font-size:.78rem; font-weight:600; padding:5px 16px; border-radius:20px; margin-bottom:12px; letter-spacing:1px; }
.section-head h2 { font-size:2rem; font-weight:700; margin-bottom:10px; }
.section-head h2 .hl { color:var(--accent); }
.section-head p { color:var(--text-dim); font-size:1rem; max-width:600px; margin:0 auto; }

/* === 视频卡片网格 === */
.video-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }
.video-card { background:var(--bg-card); border-radius:var(--radius); overflow:hidden; transition:transform .3s, box-shadow .3s; cursor:pointer; position:relative; }
.video-card:hover { transform:translateY(-6px); box-shadow:var(--shadow); }
.video-thumb { position:relative; padding-top:56.25%; overflow:hidden; }
.video-thumb img { position:absolute; top:0; left:0; width:100%; height:100%; object-fit:cover; transition:transform .4s; }
.video-card:hover .video-thumb img { transform:scale(1.06); }
.play-overlay { position:absolute; top:0; left:0; width:100%; height:100%; display:flex; align-items:center; justify-content:center; background:rgba(26,10,46,0.5); opacity:0; transition:opacity .3s; }
.video-card:hover .play-overlay { opacity:1; }
.play-btn { width:56px; height:56px; border-radius:50%; background:var(--grad-main); display:flex; align-items:center; justify-content:center; box-shadow:0 4px 20px rgba(217,70,168,0.4); }
.play-btn::after { content:''; display:block; width:0; height:0; border-style:solid; border-width:10px 0 10px 18px; border-color:transparent transparent transparent #fff; margin-left:3px; }
.video-duration { position:absolute; bottom:8px; right:8px; background:rgba(0,0,0,0.7); color:#fff; font-size:.72rem; padding:2px 8px; border-radius:4px; }
.video-info { padding:16px; }
.video-info h3 { font-size:.95rem; font-weight:600; margin-bottom:8px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.video-meta { display:flex; align-items:center; gap:12px; font-size:.78rem; color:var(--text-dim); }
.video-meta span { display:flex; align-items:center; gap:4px; }
.video-tag { display:inline-block; background:rgba(217,70,168,0.12); color:var(--accent2); font-size:.7rem; padding:2px 8px; border-radius:10px; margin-top:8px; }

/* === 服务模块 - 六宫格 === */
.service-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }
.service-card { background:var(--bg-card); border:1px solid rgba(217,70,168,0.1); border-radius:var(--radius); padding:32px 24px; text-align:center; transition:all .3s; position:relative; overflow:hidden; }
.service-card::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:var(--grad-main); transform:scaleX(0); transition:transform .3s; }
.service-card:hover::before { transform:scaleX(1); }
.service-card:hover { border-color:rgba(217,70,168,0.3); transform:translateY(-4px); box-shadow:var(--shadow); }
.service-icon { width:64px; height:64px; border-radius:16px; background:rgba(217,70,168,0.1); display:flex; align-items:center; justify-content:center; margin:0 auto 16px; font-size:1.8rem; }
.service-card h3 { font-size:1.1rem; font-weight:600; margin-bottom:8px; }
.service-card p { font-size:.88rem; color:var(--text-dim); line-height:1.6; }

/* === AI赋能区 - 左图右文交替 === */
.ai-row { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; margin-bottom:60px; }
.ai-row.reverse { direction:rtl; }
.ai-row.reverse > * { direction:ltr; }
.ai-img { border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); }
.ai-img img { width:100%; display:block; }
.ai-text h3 { font-size:1.5rem; font-weight:700; margin-bottom:12px; }
.ai-text p { color:var(--text-dim); margin-bottom:16px; line-height:1.8; }
.ai-features { display:flex; flex-wrap:wrap; gap:10px; }
.ai-feat-tag { background:rgba(255,217,61,0.1); color:var(--gold); font-size:.8rem; padding:5px 14px; border-radius:20px; border:1px solid rgba(255,217,61,0.2); }

/* === 社区互动 - 横向滚动卡片 === */
.community-scroll { display:flex; gap:20px; overflow-x:auto; padding-bottom:16px; scroll-snap-type:x mandatory; -webkit-overflow-scrolling:touch; }
.community-scroll::-webkit-scrollbar { height:6px; }
.community-scroll::-webkit-scrollbar-track { background:rgba(255,255,255,0.05); border-radius:3px; }
.community-scroll::-webkit-scrollbar-thumb { background:var(--accent); border-radius:3px; }
.comm-card { min-width:280px; flex-shrink:0; scroll-snap-align:start; background:var(--bg-card); border-radius:var(--radius); padding:24px; border:1px solid rgba(217,70,168,0.1); transition:all .3s; }
.comm-card:hover { border-color:var(--accent); transform:translateY(-4px); }
.comm-card-icon { font-size:2rem; margin-bottom:12px; }
.comm-card h3 { font-size:1.05rem; font-weight:600; margin-bottom:8px; }
.comm-card p { font-size:.85rem; color:var(--text-dim); line-height:1.6; }

/* === 弹幕动画 === */
.danmu-area { position:relative; height:200px; overflow:hidden; margin:40px 0; background:rgba(26,10,46,0.3); border-radius:var(--radius); }
.danmu-item { position:absolute; white-space:nowrap; font-size:.85rem; padding:6px 16px; border-radius:20px; background:rgba(217,70,168,0.15); color:var(--text-main); animation:danmu-fly linear infinite; }
@keyframes danmu-fly { from{transform:translateX(100vw);} to{transform:translateX(-100%);} }

/* === 专家团队 === */
.expert-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:24px; }
.expert-card { background:var(--bg-card); border-radius:var(--radius); overflow:hidden; text-align:center; transition:transform .3s; }
.expert-card:hover { transform:translateY(-6px); }
.expert-avatar { width:100%; aspect-ratio:1; overflow:hidden; }
.expert-avatar img { width:100%; height:100%; object-fit:cover; transition:transform .4s; }
.expert-card:hover .expert-avatar img { transform:scale(1.05); }
.expert-info { padding:20px 16px; }
.expert-info h4 { font-size:1rem; font-weight:600; margin-bottom:4px; }
.expert-info .role { color:var(--accent2); font-size:.82rem; margin-bottom:8px; }
.expert-info p { font-size:.8rem; color:var(--text-dim); line-height:1.5; }
.expert-btns { display:flex; gap:8px; justify-content:center; margin-top:12px; }
.expert-btns a { font-size:.75rem; padding:5px 14px; border-radius:16px; border:1px solid rgba(217,70,168,0.3); color:var(--accent2); transition:all .2s; }
.expert-btns a:hover { background:var(--accent); color:#fff; border-color:var(--accent); }

/* === 用户评价 === */
.review-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }
.review-card { background:var(--bg-card); border-radius:var(--radius); padding:28px; border:1px solid rgba(217,70,168,0.08); position:relative; }
.review-card::before { content:'\201C'; position:absolute; top:12px; left:20px; font-size:3rem; color:rgba(217,70,168,0.2); font-family:Georgia,serif; line-height:1; }
.review-text { font-size:.9rem; color:var(--text-dim); line-height:1.7; margin-bottom:16px; padding-top:12px; }
.review-user { display:flex; align-items:center; gap:12px; }
.review-user img { width:40px; height:40px; border-radius:50%; object-fit:cover; }
.review-user-info .name { font-size:.88rem; font-weight:600; }
.review-user-info .desc { font-size:.75rem; color:var(--text-dim); }
.stars { color:var(--gold); font-size:.8rem; letter-spacing:2px; }

/* === FAQ手风琴 === */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { background:var(--bg-card); border-radius:var(--radius); margin-bottom:12px; overflow:hidden; border:1px solid rgba(217,70,168,0.08); }
.faq-q { padding:18px 24px; cursor:pointer; display:flex; justify-content:space-between; align-items:center; font-weight:600; font-size:.95rem; transition:background .2s; }
.faq-q:hover { background:rgba(217,70,168,0.05); }
.faq-q .arrow { transition:transform .3s; color:var(--accent2); }
.faq-item.open .faq-q .arrow { transform:rotate(180deg); }
.faq-a { max-height:0; overflow:hidden; transition:max-height .4s ease, padding .3s; }
.faq-item.open .faq-a { max-height:300px; padding:0 24px 18px; }
.faq-a p { font-size:.88rem; color:var(--text-dim); line-height:1.7; }

/* === 合作品牌墙 === */
.brand-wall { display:flex; flex-wrap:wrap; justify-content:center; gap:32px; align-items:center; padding:20px 0; }
.brand-wall-item { background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.08); border-radius:12px; padding:16px 28px; font-size:1rem; font-weight:600; color:var(--text-dim); transition:all .3s; }
.brand-wall-item:hover { border-color:var(--accent); color:var(--accent2); background:rgba(217,70,168,0.05); }

/* === 页脚 === */
.site-footer { background:linear-gradient(180deg, var(--bg-deep) 0%, #0D0519 100%); border-top:1px solid rgba(217,70,168,0.1); padding:60px 0 0; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; margin-bottom:40px; }
.footer-brand img { width:120px; margin-bottom:12px; }
.footer-brand p { font-size:.85rem; color:var(--text-dim); line-height:1.6; margin-bottom:12px; }
.footer-col h4 { font-size:1rem; font-weight:600; margin-bottom:16px; color:var(--text-bright); }
.footer-col a { display:block; font-size:.85rem; color:var(--text-dim); margin-bottom:10px; transition:color .2s; }
.footer-col a:hover { color:var(--accent2); }
.footer-contact p { font-size:.85rem; color:var(--text-dim); margin-bottom:8px; }
.footer-qr { width:100px; height:100px; border-radius:8px; margin-top:8px; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.06); padding:20px 0; text-align:center; font-size:.8rem; color:var(--text-dim); }

/* === 面包屑 === */
.breadcrumb { padding:20px 0; font-size:.85rem; color:var(--text-dim); }
.breadcrumb a { color:var(--accent2); }
.breadcrumb span { margin:0 8px; }

/* === 内页通用Banner === */
.page-banner { margin-top:68px; padding:60px 0; background:linear-gradient(135deg, rgba(217,70,168,0.1) 0%, rgba(26,10,46,0.8) 100%); text-align:center; }
.page-banner h1 { font-size:2.2rem; font-weight:700; margin-bottom:10px; }
.page-banner p { color:var(--text-dim); font-size:1rem; }

/* === 标签筛选 === */
.filter-tags { display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin-bottom:36px; }
.filter-tag { padding:8px 20px; border-radius:24px; font-size:.85rem; border:1px solid rgba(217,70,168,0.25); color:var(--text-dim); cursor:pointer; transition:all .2s; background:transparent; }
.filter-tag:hover, .filter-tag.active { background:var(--accent); color:#fff; border-color:var(--accent); }

/* === 创作者卡片 === */
.creator-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:20px; }
.creator-card { background:var(--bg-card); border-radius:var(--radius); padding:24px; text-align:center; transition:transform .3s; }
.creator-card:hover { transform:translateY(-4px); }
.creator-card img { width:80px; height:80px; border-radius:50%; object-fit:cover; margin:0 auto 12px; border:3px solid rgba(217,70,168,0.3); }
.creator-card h4 { font-size:.95rem; font-weight:600; margin-bottom:4px; }
.creator-card .fans { font-size:.78rem; color:var(--text-dim); }

/* === 步骤流程 === */
.steps { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:24px; counter-reset:step; }
.step-item { background:var(--bg-card); border-radius:var(--radius); padding:28px 20px; text-align:center; position:relative; counter-increment:step; }
.step-item::before { content:counter(step); display:flex; align-items:center; justify-content:center; width:40px; height:40px; border-radius:50%; background:var(--grad-main); color:#fff; font-weight:700; font-size:1.1rem; margin:0 auto 14px; }
.step-item h4 { font-size:1rem; font-weight:600; margin-bottom:8px; }
.step-item p { font-size:.82rem; color:var(--text-dim); }

/* === 等级体系 === */
.level-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:20px; }
.level-card { background:var(--bg-card); border-radius:var(--radius); padding:24px; text-align:center; border:2px solid transparent; transition:all .3s; }
.level-card:nth-child(1) { border-color:rgba(192,192,192,0.3); }
.level-card:nth-child(2) { border-color:rgba(255,215,0,0.3); }
.level-card:nth-child(3) { border-color:rgba(217,70,168,0.3); }
.level-card:nth-child(4) { border-color:rgba(255,107,157,0.3); }
.level-card h4 { font-size:1.1rem; font-weight:700; margin-bottom:6px; }
.level-card .level-name { color:var(--accent2); font-size:.85rem; margin-bottom:10px; }
.level-card p { font-size:.82rem; color:var(--text-dim); line-height:1.6; }

/* === 工具卡片 === */
.tool-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }
.tool-card { background:var(--bg-card); border-radius:var(--radius); padding:28px; border:1px solid rgba(217,70,168,0.08); transition:all .3s; }
.tool-card:hover { border-color:var(--accent); transform:translateY(-4px); box-shadow:var(--shadow); }
.tool-card .tool-icon { font-size:2.2rem; margin-bottom:14px; }
.tool-card h3 { font-size:1.05rem; font-weight:600; margin-bottom:8px; }
.tool-card p { font-size:.85rem; color:var(--text-dim); line-height:1.6; margin-bottom:12px; }
.tool-card .tool-btn { display:inline-block; padding:7px 20px; border-radius:20px; font-size:.8rem; background:rgba(217,70,168,0.12); color:var(--accent2); transition:all .2s; }
.tool-card .tool-btn:hover { background:var(--accent); color:#fff; }

/* === 直播卡片 === */
.live-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:20px; }
.live-card { background:var(--bg-card); border-radius:var(--radius); overflow:hidden; position:relative; transition:transform .3s; }
.live-card:hover { transform:translateY(-4px); }
.live-card .live-badge { position:absolute; top:12px; left:12px; background:rgba(255,68,68,0.9); color:#fff; font-size:.72rem; padding:3px 10px; border-radius:10px; display:flex; align-items:center; gap:4px; z-index:2; }
.live-card .live-badge::before { content:''; width:6px; height:6px; border-radius:50%; background:#fff; animation:pulse-dot 1s infinite; }
.live-card .live-thumb { aspect-ratio:16/9; overflow:hidden; }
.live-card .live-thumb img { width:100%; height:100%; object-fit:cover; }
.live-card .live-info { padding:14px; }
.live-card .live-info h4 { font-size:.9rem; font-weight:600; margin-bottom:4px; }
.live-card .live-info p { font-size:.78rem; color:var(--text-dim); }

/* === 话题标签 === */
.topic-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:16px; }
.topic-item { background:var(--bg-card); border-radius:var(--radius); padding:20px; display:flex; align-items:center; gap:14px; transition:all .3s; cursor:pointer; }
.topic-item:hover { background:var(--bg-card2); }
.topic-rank { font-size:1.4rem; font-weight:800; background:var(--grad-main); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; min-width:30px; }
.topic-item h4 { font-size:.92rem; font-weight:600; margin-bottom:2px; }
.topic-item p { font-size:.75rem; color:var(--text-dim); }

/* === 社交分享 === */
.share-row { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.share-btn { display:inline-flex; align-items:center; gap:6px; padding:10px 20px; border-radius:24px; font-size:.85rem; font-weight:500; border:1px solid rgba(255,255,255,0.1); color:var(--text-dim); transition:all .2s; cursor:pointer; background:transparent; }
.share-btn:hover { border-color:var(--accent); color:var(--accent2); background:rgba(217,70,168,0.05); }

/* === 数字滚动 === */
.counter-row { display:grid; grid-template-columns:repeat(4, 1fr); gap:24px; padding:40px 0; }
.counter-box { text-align:center; padding:28px 16px; background:var(--bg-card); border-radius:var(--radius); }
.counter-num { font-size:2.2rem; font-weight:800; background:var(--grad-main); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.counter-label { font-size:.85rem; color:var(--text-dim); margin-top:4px; }

/* === 响应式 === */
@media (max-width:1024px) {
  .hero { grid-template-columns:1fr; text-align:center; padding:40px 24px; }
  .hero-visual { max-width:600px; margin:0 auto; }
  .hero-btns { justify-content:center; }
  .hero-stats { justify-content:center; }
  .video-grid, .service-grid, .tool-grid, .live-grid { grid-template-columns:repeat(2, 1fr); }
  .expert-grid, .level-grid, .creator-grid { grid-template-columns:repeat(2, 1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .ai-row, .ai-row.reverse { grid-template-columns:1fr; direction:ltr; }
  .review-grid, .topic-grid { grid-template-columns:repeat(2, 1fr); }
  .counter-row { grid-template-columns:repeat(2, 1fr); }
}
@media (max-width:768px) {
  .nav-links { display:none; }
  .search-bar { display:none; }
  .menu-toggle { display:block; }
  .hero h1 { font-size:2rem; }
  .section { padding:50px 0; }
  .section-head h2 { font-size:1.5rem; }
  .video-grid, .service-grid, .tool-grid, .live-grid, .review-grid, .topic-grid { grid-template-columns:1fr; }
  .expert-grid, .level-grid, .creator-grid { grid-template-columns:repeat(2, 1fr); }
  .footer-grid { grid-template-columns:1fr; }
  .counter-row { grid-template-columns:1fr 1fr; }
  .steps { grid-template-columns:1fr 1fr; }
}
@media (max-width:480px) {
  .hero h1 { font-size:1.6rem; }
  .hero-stats { flex-wrap:wrap; gap:16px; }
  .expert-grid, .level-grid, .creator-grid, .counter-row, .steps { grid-template-columns:1fr; }
}