/* 抖阴植物视频社区 - 主样式文件 | dyhnsiv.cn */
/* ========================================= */

:root {
  --primary: #1a7a3c;
  --primary-dark: #0f5228;
  --primary-light: #2ecc71;
  --secondary: #27ae60;
  --accent: #f39c12;
  --accent2: #8e44ad;
  --bg-dark: #0d1f0f;
  --bg-mid: #122b15;
  --bg-light: #1a3d1e;
  --text-light: #e8f5e9;
  --text-muted: #a5d6a7;
  --card-bg: #162c19;
  --border-color: #2d5a32;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
  --radius: 12px;
  --transition: 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", "Hiragino Sans GB", sans-serif;
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--primary-dark);
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}
.top-bar a { color: var(--primary-light); text-decoration: none; margin: 0 8px; }
.top-bar a:hover { color: var(--accent); }

/* ===== 头部导航 ===== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,31,15,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}
.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: 8px;
  object-fit: cover;
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-light);
  letter-spacing: 1px;
}
.logo-text span { color: var(--accent); }

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

.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-join {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  color: #fff !important;
  padding: 8px 18px !important;
  border-radius: 20px !important;
  font-weight: 600 !important;
  font-size: 13px !important;
}
.btn-join:hover { opacity: 0.9; transform: translateY(-1px); }

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--bg-mid);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-form {
  display: flex;
  flex: 1;
  max-width: 680px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
}
.search-form:focus-within { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(46,204,113,0.15); }
.search-form input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 10px 18px;
  color: var(--text-light);
  font-size: 14px;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: var(--primary);
  border: none;
  padding: 10px 20px;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
}
.search-form button:hover { background: var(--primary-light); }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}
.search-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

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

/* ===== 通用容器 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }
.section-alt { background: var(--bg-mid); }

/* ===== 区块标题 ===== */
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}
.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  border-radius: 2px;
}
.section-header p { color: var(--text-muted); font-size: 15px; margin-top: 16px; }

/* ===== Banner ===== */
.hero-banner {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
  transform: scale(1.03);
  transition: transform 8s ease;
}
.hero-banner:hover .hero-bg { transform: scale(1.0); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,30,12,0.85) 0%, rgba(13,31,15,0.5) 60%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 20px;
}
.hero-badge {
  display: inline-block;
  background: rgba(46,204,113,0.2);
  border: 1px solid var(--primary-light);
  color: var(--primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 16px;
}
.hero-content h1 {
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.hero-content h1 em { color: var(--primary-light); font-style: normal; }
.hero-content p {
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 32px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  color: #fff;
  padding: 14px 30px;
  border-radius: 28px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 20px rgba(46,204,113,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(46,204,113,0.4); }
.btn-outline {
  background: transparent;
  color: var(--text-light);
  padding: 14px 30px;
  border-radius: 28px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid rgba(255,255,255,0.3);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat-item { text-align: center; }
.hero-stat-item .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-light);
  display: block;
}
.hero-stat-item .label { font-size: 13px; color: var(--text-muted); }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  border-color: var(--primary);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a1a0c;
}
.video-thumb img {
  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);
  transition: background 0.3s ease;
}
.video-card:hover .video-play-btn { background: rgba(0,0,0,0.45); }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(46,204,113,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(46,204,113,0.5);
}
.video-card:hover .play-icon { opacity: 1; transform: scale(1); }
.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}
.video-info { padding: 14px; }
.video-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta .views::before { content: '▶ '; }
.video-meta .likes::before { content: '♥ '; color: #e74c3c; }
.video-author {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}
.video-author img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}
.video-author span { font-size: 12px; color: var(--text-muted); }

/* ===== 模块标签页 ===== */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.tab-btn {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}
.tab-btn:hover, .tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.expert-avatar {
  width: 88px;
  height: 88px;
  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; margin-bottom: 4px; }
.expert-role { color: var(--primary-light); font-size: 13px; margin-bottom: 10px; }
.expert-desc { color: var(--text-muted); font-size: 13px; line-height: 1.6; margin-bottom: 14px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 14px; }
.award-tag {
  background: rgba(243,156,18,0.15);
  border: 1px solid rgba(243,156,18,0.3);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 14px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid;
}
.btn-sm-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-sm-outline { background: transparent; color: var(--primary-light); border-color: var(--primary-light); }
.btn-sm:hover { opacity: 0.85; transform: translateY(-1px); }

/* ===== FAQ ===== */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-question {
  padding: 18px 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 15px;
  color: var(--text-light);
}
.faq-question::after {
  content: '+';
  font-size: 22px;
  color: var(--primary-light);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 20px 18px; }

/* ===== 评论 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.review-card:hover { border-color: var(--primary); 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(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-weight: 600; font-size: 15px; }
.review-date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: var(--accent); font-size: 14px; margin-bottom: 10px; }
.review-text { color: var(--text-muted); font-size: 14px; line-height: 1.7; }
.review-tag { color: var(--primary-light); font-size: 12px; margin-top: 8px; }

/* ===== 合作品牌 ===== */
.brands-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.brand-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.brand-item:hover { border-color: var(--primary-light); color: var(--primary-light); transform: translateY(-2px); }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow); }
.contact-icon { font-size: 36px; margin-bottom: 14px; display: block; }
.contact-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.contact-card p { color: var(--text-muted); font-size: 14px; line-height: 1.7; }
.qr-code {
  width: 100px;
  height: 100px;
  background: #fff;
  border-radius: 8px;
  margin: 12px auto 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.qr-code img { width: 100%; height: 100%; object-fit: cover; }

/* ===== 社交分享 ===== */
.share-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 16px;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* ===== AI赋能模块 ===== */
.ai-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.ai-card {
  background: linear-gradient(135deg, var(--card-bg), var(--bg-light));
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(46,204,113,0.15), transparent);
  border-radius: 50%;
}
.ai-card:hover { transform: translateY(-4px); border-color: var(--primary-light); box-shadow: var(--shadow); }
.ai-icon { font-size: 40px; margin-bottom: 14px; display: block; }
.ai-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--primary-light); }
.ai-card p { color: var(--text-muted); font-size: 13px; line-height: 1.7; }

/* ===== 统计数字 ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--primary-dark), var(--bg-mid));
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: 36px;
  font-weight: 900;
  color: var(--primary-light);
  display: block;
  line-height: 1;
}
.stat-item .label { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

/* ===== 页脚 ===== */
footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  padding: 50px 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-wrap { margin-bottom: 14px; }
.footer-brand p { color: var(--text-muted); font-size: 13px; line-height: 1.8; margin-bottom: 16px; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-light);
  position: relative;
  padding-bottom: 8px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-light);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-qr-row { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-qr-item { text-align: center; }
.footer-qr-item .qr-box {
  width: 80px;
  height: 80px;
  background: #fff;
  border-radius: 6px;
  margin: 0 auto 6px;
  overflow: hidden;
}
.footer-qr-item .qr-box img { width: 100%; height: 100%; object-fit: cover; }
.footer-qr-item span { font-size: 11px; color: var(--text-muted); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 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(--text-light);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 内页横幅 ===== */
.page-banner {
  background: linear-gradient(135deg, var(--bg-mid), var(--bg-light));
  padding: 50px 0;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}
.page-banner h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; margin-bottom: 10px; }
.page-banner p { color: var(--text-muted); font-size: 15px; }

/* ===== 精选视频专区 ===== */
.featured-section { position: relative; }
.featured-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(243,156,18,0.15);
  border: 1px solid rgba(243,156,18,0.3);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
}
.featured-label::before { content: '★'; }

/* ===== 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); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  nav { display: none; position: fixed; top: 68px; left: 0; right: 0; background: var(--bg-dark); padding: 16px; flex-direction: column; border-bottom: 1px solid var(--border-color); z-index: 999; }
  nav.open { display: flex; }
  nav a { padding: 12px 16px; border-radius: 8px; }
  .hamburger { display: flex; }
  .header-actions .btn-join { display: none; }
  .hero-banner { min-height: 420px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .expert-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 26px; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { text-align: center; justify-content: center; }
  .search-tags { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 加载动画 ===== */
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }
@keyframes spin { to{transform:rotate(360deg)} }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }

.loading-skeleton {
  background: linear-gradient(90deg, var(--card-bg) 25%, var(--bg-light) 50%, var(--card-bg) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ===== 视频播放模态框 ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.video-modal-inner {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  max-width: 800px;
  width: 90%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
  background: none;
  border: none;
  line-height: 1;
}
.modal-close:hover { color: #fff; }
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 15px;
}

/* ===== 通知提示 ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
  border: none;
  font-size: 18px;
  box-shadow: var(--shadow);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-light); }

/* ===== 标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 12px;
  text-decoration: none;
  transition: var(--transition);
}
.tag-item:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 进度条 ===== */
.progress-bar-wrap { background: var(--border-color); border-radius: 4px; height: 6px; overflow: hidden; margin: 6px 0; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--primary-light), var(--accent)); border-radius: 4px; transition: width 1s ease; }

/* ===== 内页侧边栏 ===== */
.page-layout { display: grid; grid-template-columns: 1fr 300px; gap: 30px; }
.sidebar { position: sticky; top: 90px; height: fit-content; }
.sidebar-widget {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
}
.sidebar-widget h4 { font-size: 15px; font-weight: 700; margin-bottom: 14px; color: var(--primary-light); }

@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

/* ===== 娱乐专区 ===== */
.ent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 30px;
}
.ent-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 28px 22px;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ent-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--primary-light); }
.ent-card-tiktok { border-top: 3px solid #ff4d4d; }
.ent-card-protect { border-top: 3px solid #52c41a; }
.ent-card-journey { border-top: 3px solid #1890ff; }
.ent-card-showcase { border-top: 3px solid var(--accent); }
.ent-icon { font-size: 36px; line-height: 1; }
.ent-card h3 { font-size: 17px; font-weight: 700; color: var(--text-light); }
.ent-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; flex: 1; }
.ent-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ent-tags span { background: rgba(255,255,255,0.06); border: 1px solid var(--border-color); border-radius: 20px; padding: 2px 10px; font-size: 12px; color: var(--text-muted); }
/* ===== 社区功能网格 ===== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 22px;
  margin-top: 30px;
}
.community-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 26px 20px;
  text-align: center;
  transition: transform 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.community-card:hover { transform: translateY(-4px); border-color: var(--primary-light); }
.community-icon { font-size: 38px; }
.community-card h3 { font-size: 16px; font-weight: 700; color: var(--text-light); }
.community-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
  .ent-grid { grid-template-columns: 1fr 1fr; }
  .community-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .ent-grid, .community-grid { grid-template-columns: 1fr; }
}