/* =============================================
   高清无码 - 原创样式表
   gxzb3q.cn | 影视传媒 · 动漫社区
   ============================================= */

/* ---- CSS 变量 ---- */
:root {
  --primary:    #ff5200;
  --primary-dk: #cc3d00;
  --accent:     #7c28c8;
  --accent-lt:  #a855f7;
  --navy:       #0d1128;
  --navy-md:    #151a35;
  --navy-lt:    #1e2547;
  --card-bg:    #1a2040;
  --card-bd:    rgba(255,255,255,.08);
  --text:       #e8eaf0;
  --text-muted: rgba(232,234,240,.55);
  --radius:     12px;
  --radius-lg:  20px;
  --shadow:     0 8px 32px rgba(0,0,0,.45);
  --shadow-card:0 4px 20px rgba(0,0,0,.35);
  --transition: .25s ease;
  --max-w:      1280px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy-md); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ---- 工具类 ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-sm { padding: 50px 0; }
.text-center { text-align: center; }
.text-orange { color: var(--primary); }
.text-purple { color: var(--accent-lt); }
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.badge-orange { background: rgba(255,82,0,.18); color: var(--primary); border: 1px solid rgba(255,82,0,.35); }
.badge-purple { background: rgba(124,40,200,.18); color: var(--accent-lt); border: 1px solid rgba(124,40,200,.35); }
.badge-green  { background: rgba(16,185,129,.18); color: #10b981; border: 1px solid rgba(16,185,129,.35); }

/* ---- 标题组 ---- */
.section-head { text-align: center; margin-bottom: 52px; }
.section-head .eyebrow {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
}
.section-head p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}
.divider {
  width: 52px; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  margin: 14px auto 0;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 700;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #ff7a00);
  color: #fff;
  box-shadow: 0 4px 18px rgba(255,82,0,.38);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,82,0,.5); }
.btn-outline {
  border: 1.5px solid rgba(255,255,255,.25);
  color: var(--text);
  background: rgba(255,255,255,.04);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(255,82,0,.06); }
.btn-purple {
  background: linear-gradient(135deg, var(--accent), var(--accent-lt));
  color: #fff;
  box-shadow: 0 4px 18px rgba(124,40,200,.38);
}
.btn-purple:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(124,40,200,.5); }

/* ---- 顶部导航 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,17,40,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--card-bd);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-wrap img { width: 44px; height: 44px; object-fit: contain; }
.logo-text {
  font-size: 1.25rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  padding: 7px 14px;
  border-radius: 8px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}
.nav-menu a:hover,
.nav-menu a.active { color: var(--primary); background: rgba(255,82,0,.1); }
.header-cta { display: flex; align-items: center; gap: 10px; }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ---- 搜索栏 ---- */
.search-bar {
  background: var(--navy-md);
  border-bottom: 1px solid var(--card-bd);
  padding: 10px 0;
}
.search-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}
.search-form {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 640px;
  background: var(--navy-lt);
  border: 1px solid var(--card-bd);
  border-radius: 30px;
  overflow: hidden;
  transition: var(--transition);
}
.search-form:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(255,82,0,.12); }
.search-form input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 9px 18px;
  font-size: .88rem;
  color: var(--text);
}
.search-form input::placeholder { color: var(--text-muted); }
.search-btn {
  padding: 9px 20px;
  background: var(--primary);
  color: #fff;
  font-size: .85rem;
  font-weight: 700;
  border-radius: 0 30px 30px 0;
  transition: var(--transition);
}
.search-btn:hover { background: var(--primary-dk); }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .75rem;
  background: var(--navy-lt);
  border: 1px solid var(--card-bd);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.search-tag:hover { border-color: var(--primary); color: var(--primary); }

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(.38) saturate(1.2);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(13,17,40,.88) 0%,
    rgba(124,40,200,.18) 50%,
    rgba(13,17,40,.72) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: 20px;
  background: rgba(255,82,0,.15);
  border: 1px solid rgba(255,82,0,.3);
  font-size: .78rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .08em;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 18px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 52px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 1.9rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: .78rem; color: var(--text-muted); margin-top: 2px; }

/* ---- 动漫卡片 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255,82,0,.4);
  box-shadow: 0 12px 36px rgba(255,82,0,.18);
}
.video-thumb {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.45);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .play-btn { opacity: 1; }
.play-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary), #ff7a00);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255,82,0,.5);
  transition: transform .2s;
}
.play-icon:hover { transform: scale(1.1); }
.play-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-meta {
  padding: 14px;
}
.video-meta h3 {
  font-size: .9rem;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-stats {
  display: flex;
  gap: 12px;
  font-size: .75rem;
  color: var(--text-muted);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.tag-item {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: .68rem;
  background: rgba(255,82,0,.12);
  color: var(--primary);
  border: 1px solid rgba(255,82,0,.2);
}

/* ---- 影视传媒模块 ---- */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.media-card {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.media-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(124,40,200,.35);
}
.media-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.media-body { padding: 20px; }
.media-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.media-body p { font-size: .85rem; color: var(--text-muted); line-height: 1.6; }
.media-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--card-bd);
}

/* ---- AI 赋能区 ---- */
.ai-section { background: var(--navy-md); }
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.ai-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.ai-img-wrap img { width: 100%; display: block; }
.ai-features { display: flex; flex-direction: column; gap: 20px; }
.ai-feat {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px;
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
  transition: var(--transition);
}
.ai-feat:hover { border-color: rgba(124,40,200,.4); }
.ai-feat-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-lt));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}
.ai-feat-body h4 { font-size: .95rem; font-weight: 700; margin-bottom: 4px; }
.ai-feat-body p { font-size: .82rem; color: var(--text-muted); }

/* ---- 专家展示 ---- */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,82,0,.35);
  box-shadow: var(--shadow-card);
}
.expert-avatar {
  width: 88px; height: 88px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--primary);
}
.expert-name { font-size: 1.05rem; font-weight: 800; margin-bottom: 4px; }
.expert-role { font-size: .8rem; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: .82rem; color: var(--text-muted); margin-bottom: 14px; line-height: 1.6; }
.expert-awards { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.expert-social { display: flex; gap: 8px; justify-content: center; }
.social-btn {
  padding: 5px 12px;
  border-radius: 8px;
  font-size: .72rem;
  font-weight: 600;
  background: var(--navy-lt);
  border: 1px solid var(--card-bd);
  color: var(--text-muted);
  transition: var(--transition);
}
.social-btn:hover { border-color: var(--primary); color: var(--primary); }
.expert-actions { display: flex; gap: 8px; justify-content: center; margin-top: 14px; }

/* ---- 合作品牌 ---- */
.partners-section { background: var(--navy-md); }
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}
.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ---- How To 加入 ---- */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  position: relative;
  transition: var(--transition);
}
.step-card:hover { border-color: rgba(255,82,0,.35); transform: translateY(-3px); }
.step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #ff7a00);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 14px;
}
.step-card h3 { font-size: .95rem; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: .82rem; color: var(--text-muted); }

/* ---- FAQ ---- */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: rgba(255,82,0,.3); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: .95rem;
  font-weight: 700;
  gap: 12px;
}
.faq-question:hover { color: var(--primary); }
.faq-arrow {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(255,82,0,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform .25s;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); background: var(--primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .25s;
  padding: 0 22px;
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.75;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 22px 18px; }

/* ---- 用户评论 ---- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: var(--transition);
}
.review-card:hover { border-color: rgba(255,82,0,.25); transform: translateY(-2px); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.review-info h4 { font-size: .9rem; font-weight: 700; }
.review-info span { font-size: .75rem; color: var(--text-muted); }
.review-stars { color: #fbbf24; font-size: .85rem; margin-bottom: 8px; }
.review-text { font-size: .85rem; color: var(--text-muted); line-height: 1.7; }

/* ---- 联系区 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.contact-info h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 20px; }
.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 18px;
  padding: 14px;
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
}
.contact-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #ff7a00);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-item h4 { font-size: .85rem; font-weight: 700; margin-bottom: 3px; }
.contact-item p { font-size: .82rem; color: var(--text-muted); }
.qr-group { display: flex; gap: 20px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-item img { width: 100px; height: 100px; border-radius: 8px; border: 2px solid var(--card-bd); }
.qr-item p { font-size: .72rem; color: var(--text-muted); margin-top: 6px; }

/* ---- 分享按钮 ---- */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
  border: 1px solid var(--card-bd);
  background: var(--card-bg);
  color: var(--text-muted);
  transition: var(--transition);
}
.share-btn:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }

/* ---- 社区区域 ---- */
.community-section { background: var(--navy-md); }
.community-banner-img {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
  max-height: 340px;
  object-fit: cover;
}
.community-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
}
.comm-feat {
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  transition: var(--transition);
}
.comm-feat:hover { border-color: rgba(124,40,200,.4); transform: translateY(-3px); }
.comm-feat-icon { font-size: 2rem; margin-bottom: 10px; }
.comm-feat h3 { font-size: .9rem; font-weight: 700; margin-bottom: 6px; }
.comm-feat p { font-size: .78rem; color: var(--text-muted); }

/* ---- 页脚 ---- */
.site-footer {
  background: var(--navy-md);
  border-top: 1px solid var(--card-bd);
  padding: 60px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .logo-wrap { margin-bottom: 14px; }
.footer-brand p { font-size: .85rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 18px; }
.footer-col h4 {
  font-size: .88rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: .82rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--card-bd);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .78rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

/* ---- 面包屑 ---- */
.breadcrumb {
  padding: 14px 0;
  font-size: .8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--text-muted); transition: var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { opacity: .4; }
.breadcrumb .current { color: var(--primary); }

/* ---- 内页 Hero ---- */
.page-hero {
  background: var(--navy-md);
  border-bottom: 1px solid var(--card-bd);
  padding: 48px 0 36px;
}
.page-hero h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 900; margin-bottom: 10px; }
.page-hero p { font-size: .95rem; color: var(--text-muted); }

/* ---- 弹幕 ---- */
.danmaku-bar {
  overflow: hidden;
  height: 36px;
  background: rgba(0,0,0,.25);
  border-radius: 8px;
  position: relative;
  margin: 16px 0;
}
.danmaku-track {
  display: flex;
  gap: 60px;
  position: absolute;
  white-space: nowrap;
  animation: danmaku 28s linear infinite;
  top: 50%;
  transform: translateY(-50%);
  left: 100%;
}
.danmaku-item {
  font-size: .78rem;
  color: rgba(255,255,255,.65);
  padding: 0 10px;
}
@keyframes danmaku { 0% { left: 100%; } 100% { left: -200%; } }

/* ---- 统计条 ---- */
.stats-bar {
  display: flex;
  gap: 0;
  background: var(--navy-md);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stats-bar .stat-col {
  flex: 1;
  padding: 24px 20px;
  text-align: center;
  border-right: 1px solid var(--card-bd);
  transition: var(--transition);
}
.stats-bar .stat-col:last-child { border-right: none; }
.stats-bar .stat-col:hover { background: rgba(255,82,0,.06); }
.stats-bar .num { font-size: 1.7rem; font-weight: 900; color: var(--primary); }
.stats-bar .lbl { font-size: .75rem; color: var(--text-muted); margin-top: 3px; }

/* ---- 渐入动画 ---- */
.fade-in { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---- 回到顶部 ---- */
#back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--primary), #ff7a00);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(255,82,0,.4);
}
#back-top.show { opacity: 1; pointer-events: auto; }
#back-top:hover { transform: translateY(-3px); }
#back-top svg { width: 18px; height: 18px; fill: #fff; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--navy-md); flex-direction: column; padding: 16px; border-bottom: 1px solid var(--card-bd); gap: 4px; }
  .nav-menu.open { display: flex; }
  .hamburger { display: flex; }
  .header-cta .btn { display: none; }
  .hero { min-height: 70vh; }
  .hero-stats { gap: 20px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .search-tags { display: none; }
  .stats-bar { flex-direction: column; }
  .stats-bar .stat-col { border-right: none; border-bottom: 1px solid var(--card-bd); }
  .stats-bar .stat-col:last-child { border-bottom: none; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .section { padding: 52px 0; }
}