/* ============================================
   糖心 - 原创主题「霞光映雪」
   配色：雪域白#f8f9fc + 霞光橘#ff6b35 + 暮霭紫#7c3aed + 冰川蓝#0ea5e9 + 炭墨#1e293b
   ============================================ */

/* --- CSS变量 --- */
:root {
  --snow: #f8f9fc;
  --glow: #ff6b35;
  --dusk: #7c3aed;
  --ice: #0ea5e9;
  --ink: #1e293b;
  --ink-light: #475569;
  --ink-pale: #94a3b8;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(30,41,59,.08);
  --shadow-md: 0 4px 16px rgba(30,41,59,.1);
  --shadow-lg: 0 12px 40px rgba(30,41,59,.15);
  --radius: 12px;
  --radius-lg: 20px;
  --glow-gradient: linear-gradient(135deg, var(--glow), #ff8c42);
  --dusk-gradient: linear-gradient(135deg, var(--dusk), #a855f7);
  --ice-gradient: linear-gradient(135deg, var(--ice), #38bdf8);
}

/* --- 全局重置 --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--snow);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s; }
a:hover { color: var(--glow); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* --- 容器 --- */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* --- 滚动揭示（JS控制） --- */
.js-on .emerge { opacity: 0; transform: translateY(36px); transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }
.js-on .emerge.shown { opacity: 1; transform: translateY(0); }

/* ============================================
   顶部导航 - 磨砂玻璃条
   ============================================ */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  background: rgba(248,249,252,.82);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}
.topbar.scrolled { box-shadow: var(--shadow-md); }
.topbar-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 38px; height: 38px; border-radius: 8px; }
.brand span { font-size: 1.25rem; font-weight: 700; color: var(--ink); }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: .95rem; font-weight: 500; color: var(--ink-light);
  position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ""; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--glow-gradient); border-radius: 2px; transition: width .3s;
}
.nav-links a:hover { color: var(--glow); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--glow); }
.nav-links a.active::after { width: 100%; }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ============================================
   Hero区 - 左右分栏（文字+大图）
   ============================================ */
.hero {
  margin-top: 68px;
  background: linear-gradient(160deg, #f8f9fc 0%, #ede9fe 50%, #fef3c7 100%);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; top: -120px; right: -120px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,53,.15), transparent 70%);
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
}
.hero-text h1 { font-size: 2.8rem; font-weight: 800; line-height: 1.25; margin-bottom: 16px; color: var(--ink); }
.hero-text h1 em { font-style: normal; background: var(--glow-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-text .subtitle { font-size: 1.15rem; color: var(--ink-light); margin-bottom: 28px; line-height: 1.8; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.hero-tags span {
  padding: 6px 16px; border-radius: 20px; font-size: .85rem; font-weight: 500;
  background: rgba(255,107,53,.1); color: var(--glow); border: 1px solid rgba(255,107,53,.2);
}
.hero-btns { display: flex; gap: 14px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; font-size: 1rem; font-weight: 600;
  background: var(--glow-gradient); color: #fff; border: none; cursor: pointer;
  box-shadow: 0 4px 20px rgba(255,107,53,.35); transition: transform .2s, box-shadow .2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,107,53,.45); color: #fff; }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; font-size: 1rem; font-weight: 600;
  background: transparent; color: var(--dusk); border: 2px solid var(--dusk); cursor: pointer;
  transition: background .2s, color .2s;
}
.btn-outline:hover { background: var(--dusk); color: #fff; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.hero-badge {
  position: absolute; bottom: -16px; left: 24px;
  background: var(--card-bg); padding: 12px 20px; border-radius: var(--radius);
  box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 10px;
}
.hero-badge .dot { width: 10px; height: 10px; border-radius: 50%; background: #22c55e; animation: pulse-dot 1.5s infinite; }
@keyframes pulse-dot { 0%,100% { box-shadow: 0 0 0 0 rgba(34,197,94,.4); } 50% { box-shadow: 0 0 0 8px rgba(34,197,94,0); } }
.hero-badge span { font-size: .9rem; font-weight: 600; color: var(--ink); }

/* ============================================
   统计数字条
   ============================================ */
.stats-bar {
  background: var(--card-bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 36px 0;
}
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item .stat-num { font-size: 2.2rem; font-weight: 800; color: var(--glow); }
.stat-item .stat-label { font-size: .9rem; color: var(--ink-pale); margin-top: 4px; }

/* ============================================
   章节通用标题
   ============================================ */
.sec { padding: 80px 0; }
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-head .tag {
  display: inline-block; padding: 6px 18px; border-radius: 20px; font-size: .8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px;
}
.tag-orange { background: rgba(255,107,53,.1); color: var(--glow); }
.tag-purple { background: rgba(124,58,237,.1); color: var(--dusk); }
.tag-blue { background: rgba(14,165,233,.1); color: var(--ice); }
.sec-head h2 { font-size: 2rem; font-weight: 800; color: var(--ink); margin-bottom: 12px; }
.sec-head p { font-size: 1.05rem; color: var(--ink-light); max-width: 640px; margin: 0 auto; }

/* ============================================
   视频卡片网格 - 3列瀑布
   ============================================ */
.vid-mosaic { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.vid-tile {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--card-bg); box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s; cursor: pointer;
}
.vid-tile:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.vid-thumb { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.vid-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.vid-tile:hover .vid-thumb img { transform: scale(1.06); }
.vid-play {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%) scale(0);
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,107,53,.9); display: flex; align-items: center; justify-content: center;
  transition: transform .3s cubic-bezier(.34,1.56,.64,1); box-shadow: 0 4px 20px rgba(255,107,53,.4);
}
.vid-tile:hover .vid-play { transform: translate(-50%,-50%) scale(1); }
.vid-play::after {
  content: ""; width: 0; height: 0;
  border-left: 18px solid #fff; border-top: 11px solid transparent; border-bottom: 11px solid transparent;
  margin-left: 3px;
}
.vid-dur {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,.7); color: #fff; font-size: .75rem; padding: 2px 8px; border-radius: 4px;
}
.vid-info { padding: 14px 16px; }
.vid-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.vid-meta { display: flex; align-items: center; gap: 12px; font-size: .82rem; color: var(--ink-pale); }
.vid-meta span { display: flex; align-items: center; gap: 4px; }

/* ============================================
   影视传媒服务 - 横向滚动卡片带
   ============================================ */
.svc-scroll { overflow-x: auto; padding-bottom: 16px; -webkit-overflow-scrolling: touch; }
.svc-scroll::-webkit-scrollbar { height: 6px; }
.svc-scroll::-webkit-scrollbar-track { background: var(--border); border-radius: 3px; }
.svc-scroll::-webkit-scrollbar-thumb { background: var(--ink-pale); border-radius: 3px; }
.svc-track { display: flex; gap: 20px; min-width: max-content; }
.svc-card {
  flex: 0 0 220px; padding: 28px 20px; border-radius: var(--radius);
  text-align: center; transition: transform .3s, box-shadow .3s; cursor: pointer;
}
.svc-card:nth-child(odd) { background: linear-gradient(160deg, #fff7ed, #fff); border: 1px solid rgba(255,107,53,.15); }
.svc-card:nth-child(even) { background: linear-gradient(160deg, #f5f3ff, #fff); border: 1px solid rgba(124,58,237,.15); }
.svc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.svc-icon { font-size: 2.4rem; margin-bottom: 12px; }
.svc-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.svc-card p { font-size: .85rem; color: var(--ink-light); line-height: 1.6; }

/* ============================================
   AI赋能 - 左图右文交替
   ============================================ */
.ai-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 56px; }
.ai-block.reverse { direction: rtl; }
.ai-block.reverse > * { direction: ltr; }
.ai-img img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.ai-content .ai-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px; font-size: 1.1rem; font-weight: 800;
  background: var(--glow-gradient); color: #fff; margin-bottom: 16px;
}
.ai-content h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 12px; }
.ai-content p { font-size: 1rem; color: var(--ink-light); margin-bottom: 16px; line-height: 1.8; }
.ai-features { display: flex; flex-wrap: wrap; gap: 8px; }
.ai-features span {
  padding: 5px 14px; border-radius: 6px; font-size: .82rem; font-weight: 500;
  background: rgba(14,165,233,.08); color: var(--ice); border: 1px solid rgba(14,165,233,.15);
}

/* ============================================
   专家团队 - 横排卡片
   ============================================ */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card {
  background: var(--card-bg); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s; text-align: center;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.team-photo { aspect-ratio: 1; overflow: hidden; }
.team-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.team-card:hover .team-photo img { transform: scale(1.05); }
.team-detail { padding: 18px 16px; }
.team-detail h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.team-detail .role { font-size: .85rem; color: var(--dusk); font-weight: 500; margin-bottom: 8px; }
.team-detail p { font-size: .82rem; color: var(--ink-light); line-height: 1.6; }

/* ============================================
   社区功能 - 双列特色卡
   ============================================ */
.comm-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.comm-card {
  display: flex; gap: 20px; padding: 28px; border-radius: var(--radius);
  background: var(--card-bg); box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s;
}
.comm-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.comm-card .comm-icon {
  flex: 0 0 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
}
.comm-card:nth-child(1) .comm-icon { background: rgba(255,107,53,.1); }
.comm-card:nth-child(2) .comm-icon { background: rgba(124,58,237,.1); }
.comm-card:nth-child(3) .comm-icon { background: rgba(14,165,233,.1); }
.comm-card:nth-child(4) .comm-icon { background: rgba(34,197,94,.1); }
.comm-card:nth-child(5) .comm-icon { background: rgba(234,179,8,.1); }
.comm-card:nth-child(6) .comm-icon { background: rgba(236,72,153,.1); }
.comm-text h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.comm-text p { font-size: .88rem; color: var(--ink-light); line-height: 1.7; }

/* ============================================
   用户评价 - 三列卡片
   ============================================ */
.review-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: transform .3s;
}
.review-card:hover { transform: translateY(-4px); }
.review-stars { color: #f59e0b; font-size: 1rem; margin-bottom: 12px; letter-spacing: 2px; }
.review-card blockquote { font-size: .95rem; color: var(--ink-light); line-height: 1.8; margin-bottom: 16px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--dusk-gradient); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: .9rem; }
.review-name { font-size: .9rem; font-weight: 600; }
.review-role { font-size: .78rem; color: var(--ink-pale); }

/* ============================================
   FAQ - 手风琴
   ============================================ */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden; background: var(--card-bg);
}
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 24px; cursor: pointer; font-weight: 600; font-size: 1rem;
  transition: background .2s;
}
.faq-q:hover { background: rgba(255,107,53,.04); }
.faq-q .arrow { font-size: 1.2rem; transition: transform .3s; color: var(--ink-pale); }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height .4s, padding .4s; }
.faq-item.open .faq-a { max-height: 300px; padding: 0 24px 18px; }
.faq-a p { font-size: .92rem; color: var(--ink-light); line-height: 1.8; }

/* ============================================
   页脚
   ============================================ */
.site-footer {
  background: var(--ink); color: rgba(255,255,255,.7); padding: 56px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand img { width: 42px; height: 42px; border-radius: 8px; margin-bottom: 12px; }
.footer-brand p { font-size: .88rem; line-height: 1.7; max-width: 280px; }
.footer-col h5 { color: #fff; font-size: .95rem; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; font-size: .88rem; margin-bottom: 10px; color: rgba(255,255,255,.6); transition: color .2s; }
.footer-col a:hover { color: var(--glow); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center; font-size: .82rem;
}

/* ============================================
   面包屑
   ============================================ */
.breadcrumb {
  margin-top: 68px; padding: 16px 0; background: var(--card-bg); border-bottom: 1px solid var(--border);
}
.breadcrumb-list { display: flex; align-items: center; gap: 8px; font-size: .88rem; color: var(--ink-pale); }
.breadcrumb-list a { color: var(--ink-light); }
.breadcrumb-list a:hover { color: var(--glow); }
.breadcrumb-list .sep { color: var(--ink-pale); }

/* ============================================
   内页 - 页面头部Banner
   ============================================ */
.page-banner {
  background: linear-gradient(160deg, #ede9fe 0%, #fef3c7 100%);
  padding: 56px 0 48px; text-align: center;
}
.page-banner h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
.page-banner p { font-size: 1.05rem; color: var(--ink-light); max-width: 560px; margin: 0 auto; }

/* ============================================
   标签筛选
   ============================================ */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.filter-btn {
  padding: 8px 20px; border-radius: 20px; font-size: .88rem; font-weight: 500;
  background: var(--card-bg); border: 1px solid var(--border); cursor: pointer;
  transition: all .2s; color: var(--ink-light);
}
.filter-btn:hover, .filter-btn.on { background: var(--glow-gradient); color: #fff; border-color: transparent; }

/* ============================================
   排行榜
   ============================================ */
.rank-list { max-width: 700px; margin: 0 auto; }
.rank-item {
  display: flex; align-items: center; gap: 16px; padding: 14px 20px;
  border-bottom: 1px solid var(--border); transition: background .2s;
}
.rank-item:hover { background: rgba(255,107,53,.03); }
.rank-num {
  flex: 0 0 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .9rem; color: #fff;
}
.rank-num.top1 { background: var(--glow-gradient); }
.rank-num.top2 { background: var(--dusk-gradient); }
.rank-num.top3 { background: var(--ice-gradient); }
.rank-num.normal { background: var(--border); color: var(--ink-light); }
.rank-title { flex: 1; font-weight: 600; font-size: .95rem; }
.rank-views { font-size: .85rem; color: var(--ink-pale); }

/* ============================================
   创作中心 - 时间轴
   ============================================ */
.timeline { position: relative; max-width: 700px; margin: 0 auto; padding-left: 40px; }
.timeline::before { content: ""; position: absolute; left: 15px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.tl-item { position: relative; margin-bottom: 36px; }
.tl-dot {
  position: absolute; left: -33px; top: 4px; width: 18px; height: 18px;
  border-radius: 50%; border: 3px solid var(--glow); background: var(--card-bg);
}
.tl-item:nth-child(2) .tl-dot { border-color: var(--dusk); }
.tl-item:nth-child(3) .tl-dot { border-color: var(--ice); }
.tl-item:nth-child(4) .tl-dot { border-color: #22c55e; }
.tl-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
}
.tl-card h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.tl-card p { font-size: .92rem; color: var(--ink-light); line-height: 1.7; }

/* ============================================
   创作者卡片
   ============================================ */
.creator-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.creator-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px; text-align: center;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border); 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 14px; }
.creator-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.creator-card .creator-tag { font-size: .82rem; color: var(--dusk); margin-bottom: 10px; }
.creator-card p { font-size: .85rem; color: var(--ink-light); }

/* ============================================
   社区 - 话题卡片
   ============================================ */
.topic-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.topic-card {
  display: flex; align-items: center; gap: 16px; padding: 20px;
  background: var(--card-bg); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: transform .2s;
}
.topic-card:hover { transform: translateX(4px); }
.topic-icon { font-size: 2rem; flex: 0 0 auto; }
.topic-card h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.topic-card p { font-size: .85rem; color: var(--ink-pale); }

/* ============================================
   工具展示
   ============================================ */
.tool-showcase { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tool-item {
  background: var(--card-bg); border-radius: var(--radius); padding: 32px 24px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  text-align: center; transition: transform .3s, box-shadow .3s;
}
.tool-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.tool-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 14px; font-size: 1.2rem; font-weight: 800;
  margin-bottom: 16px; color: #fff;
}
.tool-item:nth-child(1) .tool-num { background: var(--glow-gradient); }
.tool-item:nth-child(2) .tool-num { background: var(--dusk-gradient); }
.tool-item:nth-child(3) .tool-num { background: var(--ice-gradient); }
.tool-item:nth-child(4) .tool-num { background: linear-gradient(135deg, #22c55e, #4ade80); }
.tool-item:nth-child(5) .tool-num { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.tool-item:nth-child(6) .tool-num { background: linear-gradient(135deg, #ec4899, #f472b6); }
.tool-item h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.tool-item p { font-size: .88rem; color: var(--ink-light); line-height: 1.7; }
.tool-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-top: 12px; }
.tool-tags span { padding: 3px 10px; border-radius: 4px; font-size: .75rem; background: rgba(14,165,233,.08); color: var(--ice); }

/* ============================================
   优势对比
   ============================================ */
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.adv-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border); text-align: center;
}
.adv-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.adv-card p { font-size: .88rem; color: var(--ink-light); }

/* ============================================
   直播卡片
   ============================================ */
.live-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.live-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: transform .3s;
}
.live-card:hover { transform: translateY(-4px); }
.live-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.live-badge {
  position: absolute; top: 12px; left: 12px;
  background: #ef4444; color: #fff; font-size: .75rem; font-weight: 600;
  padding: 3px 10px; border-radius: 4px; display: flex; align-items: center; gap: 4px;
}
.live-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #fff; animation: pulse-dot 1s infinite; }
.live-info { padding: 14px 16px; background: var(--card-bg); }
.live-info h4 { font-size: .95rem; font-weight: 600; margin-bottom: 4px; }
.live-info p { font-size: .82rem; color: var(--ink-pale); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { max-width: 520px; margin: 0 auto; }
  .hero-btns { justify-content: center; }
  .hero-tags { justify-content: center; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-block, .ai-block.reverse { grid-template-columns: 1fr; direction: ltr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: fixed; top: 68px; left: 0; right: 0; background: rgba(248,249,252,.98); backdrop-filter: blur(18px); flex-direction: column; padding: 24px; gap: 16px; border-bottom: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .hero-text h1 { font-size: 2rem; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .vid-mosaic { grid-template-columns: repeat(2, 1fr); }
  .comm-duo { grid-template-columns: 1fr; }
  .review-cols { grid-template-columns: 1fr; }
  .creator-grid { grid-template-columns: 1fr; }
  .tool-showcase { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .live-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 480px) {
  .vid-mosaic { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .team-grid { grid-template-columns: 1fr; }
  .live-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
}