/* 青柠视频植物视频社区 - 主样式表 | dt129390.cn */
:root {
  --primary: #1a6b3c;
  --primary-dark: #0f4a28;
  --primary-light: #2d9e5a;
  --gold: #c9a84c;
  --gold-light: #e8c97a;
  --dark: #1a1a1a;
  --gray: #555;
  --light-gray: #f5f5f5;
  --white: #fff;
  --border: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.1);
  --radius: 12px;
  --transition: all 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== 干扰标签隐藏 ===== */
.dy-noise { display: none !important; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  text-align: center;
  padding: 6px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: var(--gold-light); text-decoration: none; }

/* ===== 头部导航 ===== */
header {
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-wrap img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
}
.logo-text span { color: var(--gold); }

nav { display: flex; align-items: center; gap: 4px; }
nav a {
  padding: 8px 14px;
  color: var(--dark);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
  white-space: nowrap;
}
nav a:hover, nav a.active {
  background: var(--primary);
  color: var(--white);
}

.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-login {
  padding: 8px 20px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}
.btn-login:hover { background: var(--primary-dark); }

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--light-gray);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-bar-inner form {
  display: flex;
  flex: 1;
  max-width: 600px;
  border: 2px solid var(--primary);
  border-radius: 24px;
  overflow: hidden;
  background: var(--white);
}
.search-bar-inner input {
  flex: 1;
  border: none;
  outline: none;
  padding: 9px 18px;
  font-size: 14px;
  background: transparent;
}
.search-bar-inner button {
  padding: 9px 22px;
  background: var(--primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.search-bar-inner button:hover { background: var(--primary-dark); }
.search-hot-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-hot-tags a {
  font-size: 12px;
  color: var(--gray);
  text-decoration: none;
  padding: 3px 10px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
}
.search-hot-tags a:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 面包屑 ===== */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--gray);
}
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb span { margin: 0 6px; }

/* ===== Banner ===== */
.hero-banner {
  position: relative;
  width: 100%;
  min-height: 520px;
  background: var(--primary-dark);
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.5);
  z-index: 0;
}
.hero-banner-content {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  color: var(--white);
}
.hero-banner-content h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.hero-banner-content h1 em {
  color: var(--gold-light);
  font-style: normal;
}
.hero-banner-content p {
  font-size: clamp(14px, 2vw, 18px);
  opacity: 0.9;
  max-width: 600px;
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  padding: 13px 32px;
  background: var(--gold);
  color: var(--dark);
  border: none;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-outline {
  padding: 13px 32px;
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); }

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--gold-light);
}
.hero-stat span { font-size: 13px; opacity: 0.8; }

/* ===== 通用区块 ===== */
.section {
  padding: 64px 0;
}
.section-alt { background: var(--light-gray); }
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-header {
  text-align: center;
  margin-bottom: 44px;
}
.section-tag {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 12px;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.section-header h2 {
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}
.section-header h2 em {
  color: var(--primary);
  font-style: normal;
}
.section-header p {
  color: var(--gray);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto;
}
.section-more {
  text-align: center;
  margin-top: 36px;
}
.btn-more {
  display: inline-block;
  padding: 11px 36px;
  border: 2px solid var(--primary);
  color: var(--primary);
  border-radius: 24px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-more:hover { background: var(--primary); color: var(--white); }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,0.15); }
.video-thumb {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  background: var(--primary-dark);
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.video-play-btn svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gold);
  color: var(--dark);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 10px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: var(--white);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
}
.video-info { padding: 14px; }
.video-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--gray);
  margin-top: 8px;
}
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ===== 模块标题 ===== */
.module-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}
.module-title h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
}
.module-title-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(to right, var(--primary), transparent);
}

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-align: center;
  padding: 28px 20px;
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--primary);
  display: block;
}
.expert-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.expert-card .role {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
}
.expert-card p { font-size: 13px; color: var(--gray); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 14px; }
.expert-tag {
  font-size: 11px;
  padding: 3px 10px;
  background: var(--light-gray);
  border-radius: 10px;
  color: var(--gray);
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 16px;
  font-size: 12px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}
.btn-sm-primary { background: var(--primary); color: var(--white); }
.btn-sm-primary:hover { background: var(--primary-dark); }
.btn-sm-outline { border: 1px solid var(--primary); color: var(--primary); }
.btn-sm-outline:hover { background: var(--primary); color: var(--white); }

/* ===== 评价区 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 12px;
  left: 18px;
  font-size: 60px;
  color: var(--primary);
  opacity: 0.12;
  font-family: Georgia, serif;
  line-height: 1;
}
.review-stars { color: #f5a623; font-size: 14px; margin-bottom: 10px; }
.review-card p { font-size: 14px; color: var(--gray); line-height: 1.7; margin-bottom: 14px; }
.reviewer { display: flex; align-items: center; gap: 10px; }
.reviewer-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
}
.reviewer-info strong { display: block; font-size: 14px; color: var(--dark); }
.reviewer-info span { font-size: 12px; color: var(--gray); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  padding: 16px 20px;
  background: var(--white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  transition: var(--transition);
}
.faq-q:hover { background: var(--light-gray); }
.faq-q.active { background: var(--primary); color: var(--white); }
.faq-q .icon { font-size: 18px; transition: transform 0.3s; }
.faq-q.active .icon { transform: rotate(45deg); }
.faq-a {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
  background: #fafafa;
}
.faq-a.open { max-height: 300px; padding: 16px 20px; }

/* ===== 合作品牌 ===== */
.brand-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.brand-logo-item {
  padding: 14px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  transition: var(--transition);
}
.brand-logo-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }

/* ===== 社区加入指南 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.step-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 14px;
}
.step-card h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--gray); line-height: 1.6; }

/* ===== 联系区 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.contact-info h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 18px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}
.contact-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 16px;
  flex-shrink: 0;
}
.contact-item-text strong { display: block; font-size: 14px; color: var(--dark); }
.contact-item-text span { font-size: 13px; color: var(--gray); }
.qr-grid { display: flex; gap: 20px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-item img {
  width: 110px;
  height: 110px;
  border: 2px solid var(--border);
  border-radius: 8px;
  display: block;
  margin-bottom: 6px;
}
.qr-item span { font-size: 12px; color: var(--gray); }

/* ===== 社交分享 ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 0;
}
.share-label { font-size: 14px; color: var(--gray); font-weight: 600; }
.share-btn {
  padding: 7px 18px;
  border-radius: 18px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.share-wechat { background: #07c160; color: var(--white); }
.share-weibo { background: #e6162d; color: var(--white); }
.share-douyin { background: var(--dark); color: var(--white); }
.share-bilibili { background: #00a1d6; color: var(--white); }

/* ===== 页脚 ===== */
footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 48px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px 40px;
}
.footer-brand .logo-text { color: var(--white); font-size: 20px; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; line-height: 1.8; opacity: 0.7; margin-bottom: 16px; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 13px;
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 20px;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  opacity: 0.65;
}
.footer-bottom a { color: rgba(255,255,255,0.65); text-decoration: none; }
.footer-bottom a:hover { color: var(--gold-light); }

/* ===== AI赋能区 ===== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.ai-card {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius);
  padding: 28px 22px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.ai-card::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}
.ai-card-icon { font-size: 36px; margin-bottom: 14px; }
.ai-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.ai-card p { font-size: 13px; opacity: 0.85; line-height: 1.7; }

/* ===== 娱乐专区 ===== */
.ent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}
.ent-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.ent-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s;
}
.ent-card:hover img { transform: scale(1.08); }
.ent-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  padding: 20px 14px 14px;
  color: var(--white);
}
.ent-card-overlay h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.ent-card-overlay span { font-size: 12px; opacity: 0.8; }

/* ===== 汉堡菜单 ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 12px; box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
  nav.open { display: flex; }
  .hamburger { display: flex; }
  .hero-banner { min-height: 380px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .expert-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr 1fr; }
  .hero-banner-content h1 { font-size: 24px; }
  .section { padding: 40px 0; }
}

/* ===== 懒加载占位 ===== */
img[data-src] { background: var(--light-gray); }

/* ===== 视频模态框 ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--dark);
  border-radius: var(--radius);
  width: 90%;
  max-width: 720px;
  overflow: hidden;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  color: var(--white);
  font-size: 24px;
  cursor: pointer;
  z-index: 10;
  line-height: 1;
}
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 15px;
}
.modal-video video { width: 100%; height: 100%; }

/* ===== 内页 Hero ===== */
.inner-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 48px 0;
  color: var(--white);
  text-align: center;
}
.inner-hero h1 { font-size: clamp(24px, 4vw, 40px); font-weight: 800; margin-bottom: 10px; }
.inner-hero p { font-size: 15px; opacity: 0.85; max-width: 500px; margin: 0 auto; }

/* ===== 标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 14px;
  background: var(--light-gray);
  border-radius: 14px;
  font-size: 13px;
  color: var(--gray);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.tag:hover, .tag.active { background: var(--primary); color: var(--white); }

/* ===== 植物传媒区 ===== */
.media-tabs { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.media-tab {
  padding: 8px 20px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  background: var(--white);
  color: var(--dark);
}
.media-tab.active, .media-tab:hover { background: var(--primary); color: var(--white); border-color: var(--primary); }

/* ===== 滚动动画 ===== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== H5/H6 标题样式 ===== */
h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
  line-height: 1.5;
}
h6 {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 4px;
  line-height: 1.4;
}

/* ===== 联系页内联style替换 ===== */
.contact-h3-mt { margin-top: 24px; }
.contact-share-box {
  background: var(--light-gray);
  border-radius: 12px;
  padding: 20px;
}
.contact-share-box h4 { margin-bottom: 12px; color: var(--dark); }
.contact-qr-wrap { margin-bottom: 24px; }

/* ===== 关于页内联style替换 ===== */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}
.about-intro-title { color: var(--primary); margin-bottom: 16px; font-size: 22px; }
.about-intro-img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}
.about-intro-text { color: var(--gray); line-height: 1.9; margin-bottom: 14px; }

/* ===== 团队页内联style替换 ===== */
.team-social-label { font-size: 12px; opacity: 0.6; margin-bottom: 6px; }
.team-social-links { display: flex; gap: 8px; flex-wrap: wrap; }
.team-social-link { color: rgba(255,255,255,0.7); font-size: 12px; text-decoration: none; }

/* ===== 专题页内联style替换 ===== */
.topic-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
}
.topic-intro-img { width: 100%; border-radius: 14px; box-shadow: 0 6px 24px rgba(0,0,0,0.12); }
.topic-intro-text { color: var(--gray); line-height: 1.9; margin-bottom: 12px; }
.topic-stat-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 16px;
  margin-bottom: 32px;
}
.topic-stat-card {
  background: var(--light-gray);
  border-radius: 10px;
  padding: 18px;
  text-align: center;
}
.topic-stat-card strong { display: block; font-size: 24px; font-weight: 800; color: var(--primary); }
.topic-stat-card span { font-size: 13px; color: var(--gray); }

/* ===== 内页面包屑 ===== */
.breadcrumb-wrap {
  background: var(--light-gray);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  font-size: 13px;
  color: var(--gray);
}
.breadcrumb-inner a { color: var(--primary); text-decoration: none; }
.breadcrumb-inner a:hover { text-decoration: underline; }
.breadcrumb-inner span { margin: 0 6px; }

/* ===== 视频页筛选栏 ===== */
.video-filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  align-items: center;
}
.video-filter-label { font-size: 14px; color: var(--gray); font-weight: 600; }
.video-filter-btn {
  padding: 7px 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--white);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--dark);
}
.video-filter-btn.active, .video-filter-btn:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* ===== 社区帖子卡片 ===== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.post-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.post-card:hover { transform: translateY(-3px); }
.post-card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.post-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; flex-shrink: 0;
}
.post-author strong { display: block; font-size: 14px; color: var(--dark); }
.post-author span { font-size: 12px; color: var(--gray); }
.post-card h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.post-card p { font-size: 13px; color: var(--gray); line-height: 1.6; margin-bottom: 12px; }
.post-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.post-tag {
  font-size: 11px; padding: 2px 8px;
  background: var(--light-gray); border-radius: 8px; color: var(--gray);
}
.post-footer { display: flex; gap: 14px; font-size: 12px; color: var(--gray); }

/* ===== AI赋能页专用 ===== */
.ai-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.ai-feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: var(--transition);
}
.ai-feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,0.12); }
.ai-feature-icon { font-size: 40px; margin-bottom: 14px; }
.ai-feature-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.ai-feature-card h5 { color: var(--primary); margin-bottom: 8px; }
.ai-feature-card p { font-size: 14px; color: var(--gray); line-height: 1.7; }

/* ===== 创作中心页专用 ===== */
.creator-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  counter-reset: step-counter;
}
.creator-step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 18px;
  box-shadow: var(--shadow);
  text-align: center;
  position: relative;
}
.creator-step-num {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; margin: 0 auto 14px;
}
.creator-step h4 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.creator-step h5 { color: var(--primary); margin-bottom: 6px; }
.creator-step p { font-size: 13px; color: var(--gray); line-height: 1.6; }

/* ===== Sitemap页 ===== */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.sitemap-col h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 12px; padding-bottom: 8px; border-bottom: 2px solid var(--primary); }
.sitemap-col ul { list-style: none; }
.sitemap-col ul li { margin-bottom: 8px; }
.sitemap-col ul li a { color: var(--gray); text-decoration: none; font-size: 14px; transition: var(--transition); }
.sitemap-col ul li a:hover { color: var(--primary); }

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
  .about-intro-grid { grid-template-columns: 1fr; }
  .topic-intro-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .topic-stat-grid { grid-template-columns: repeat(2,1fr); }
  .ai-feature-grid { grid-template-columns: 1fr; }
  .creator-steps { grid-template-columns: 1fr 1fr; }
  .sitemap-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .topic-stat-grid { grid-template-columns: 1fr; }
  .creator-steps { grid-template-columns: 1fr; }
  .sitemap-grid { grid-template-columns: 1fr; }
}