/* 蘑菇视频 - 主样式文件 */
/* 全局重置 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #e8520a;
  --primary-dark: #c44008;
  --secondary: #3a7d44;
  --accent: #f5a623;
  --bg: #f7f8fa;
  --card-bg: #ffffff;
  --text: #2c2c2c;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 10px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.14);
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* 容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  padding: 6px 0;
  text-align: center;
}
.top-bar a { color: #ffe0c8; }
.top-bar a:hover { color: #fff; }

/* ===== 头部 ===== */
.site-header {
  background: #fff;
  border-bottom: 2px solid var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(232,82,10,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
}
.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: 700;
  color: var(--primary);
  letter-spacing: 1px;
}
.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  line-height: 1.2;
}

/* 导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s;
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  background: var(--primary);
  color: #fff;
}

/* 头部右侧 */
.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-submit {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
  white-space: nowrap;
}
.btn-submit:hover { background: var(--primary-dark); }

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: #fff4ee;
  border-bottom: 1px solid #fde0cc;
  padding: 10px 0;
}
.search-inner {
  display: flex;
  align-items: center;
  max-width: 700px;
  margin: 0 auto;
  background: #fff;
  border: 2px solid var(--primary);
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(232,82,10,0.08);
}
.search-inner input {
  flex: 1;
  border: none;
  outline: none;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text);
  background: transparent;
}
.search-inner input::placeholder { color: #bbb; }
.search-inner button {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.search-inner button:hover { background: var(--primary-dark); }
.search-tips {
  text-align: center;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.search-tips span {
  display: inline-block;
  margin: 0 6px;
  padding: 2px 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.search-tips span:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== Banner ===== */
.banner-section { position: relative; overflow: hidden; }
.banner-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
  display: flex;
  align-items: center;
}
.banner-content { padding: 0 60px; color: #fff; }
.banner-tag {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 12px;
  font-weight: 600;
}
.banner-content h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.banner-content p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 20px;
  max-width: 500px;
}
.banner-btns { display: flex; gap: 12px; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: 25px;
  font-weight: 700;
  font-size: 15px;
  transition: all 0.2s;
  border: 2px solid var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 12px 28px;
  border-radius: 25px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid rgba(255,255,255,0.7);
  transition: all 0.2s;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* ===== 统计栏 ===== */
.stats-bar {
  background: var(--primary);
  color: #fff;
  padding: 16px 0;
}
.stats-inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.stat-item { text-align: center; }
.stat-num { font-size: 26px; font-weight: 800; display: block; }
.stat-label { font-size: 12px; opacity: 0.85; }

/* ===== 通用区块 ===== */
.section { padding: 50px 0; }
.section-alt { background: #fff; }
.section-header { margin-bottom: 30px; }
.section-header h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
  position: relative;
  padding-left: 14px;
}
.section-header h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--primary);
  border-radius: 2px;
}
.section-header p { color: var(--text-muted); font-size: 14px; }
.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
}
.more-link {
  font-size: 13px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}
.more-link:hover { color: var(--primary-dark); }

/* ===== 视频卡片网格 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.25s;
  cursor: pointer;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #111;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity 0.25s;
}
.video-card:hover .play-btn { opacity: 1; }
.play-icon {
  width: 54px;
  height: 54px;
  background: rgba(232,82,10,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.play-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  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-author { display: flex; align-items: center; gap: 6px; }
.video-author img {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
}
.video-stats { display: flex; gap: 10px; }
.video-stats span { display: flex; align-items: center; gap: 3px; }

/* ===== 热门资讯列表 ===== */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex;
  gap: 16px;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
  transition: all 0.2s;
}
.news-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); }
.news-thumb {
  position: relative;
  width: 140px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #eee;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-thumb .play-btn { opacity: 0; }
.news-item:hover .news-thumb .play-btn { opacity: 1; }
.news-content { flex: 1; min-width: 0; }
.news-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-title:hover { color: var(--primary); }
.news-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.news-tags { display: flex; gap: 6px; }
.tag {
  background: #fff4ee;
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

/* ===== 专题卡片 ===== */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.topic-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.25s;
}
.topic-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.topic-cover {
  position: relative;
  height: 130px;
  overflow: hidden;
}
.topic-cover img { width: 100%; height: 100%; object-fit: cover; }
.topic-cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
  display: flex;
  align-items: flex-end;
  padding: 10px;
}
.topic-count { color: #fff; font-size: 12px; }
.topic-info { padding: 12px; }
.topic-title { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.topic-desc { font-size: 12px; color: var(--text-muted); }

/* ===== 作者卡片 ===== */
.author-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.author-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.25s;
}
.author-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.author-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 10px;
  border: 3px solid var(--primary);
}
.author-name { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.author-fans { font-size: 12px; color: var(--primary); margin-bottom: 8px; font-weight: 600; }
.author-desc { font-size: 12px; color: var(--text-muted); line-height: 1.5; margin-bottom: 12px; }
.btn-follow {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 6px 20px;
  border-radius: 16px;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.2s;
  border: none;
  cursor: pointer;
}
.btn-follow:hover { background: var(--primary-dark); color: #fff; }

/* ===== 互动专区 ===== */
.interaction-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.interaction-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: all 0.2s;
  border-left: 4px solid var(--primary);
}
.interaction-card:hover { box-shadow: var(--shadow-hover); }
.interaction-icon { font-size: 28px; margin-bottom: 10px; }
.interaction-title { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.interaction-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; }
.interaction-num { font-size: 20px; font-weight: 800; color: var(--primary); }
.interaction-num-label { font-size: 12px; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.faq-q {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.2s;
}
.faq-q:hover { background: #fff4ee; }
.faq-q::after {
  content: '+';
  font-size: 20px;
  color: var(--primary);
  font-weight: 300;
  transition: transform 0.2s;
}
.faq-item.open .faq-q::after { content: '−'; }
.faq-a {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--border);
}
.faq-item.open .faq-a { max-height: 200px; padding: 14px 20px; }

/* ===== 用户评论 ===== */
.comments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.comment-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s;
}
.comment-card:hover { box-shadow: var(--shadow-hover); }
.comment-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.comment-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  background: #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.comment-user { font-size: 14px; font-weight: 600; }
.comment-time { font-size: 12px; color: var(--text-muted); }
.comment-stars { color: #f5a623; font-size: 14px; margin-bottom: 6px; }
.comment-text { font-size: 13px; color: var(--text); line-height: 1.6; }
.comment-actions { margin-top: 10px; display: flex; gap: 14px; font-size: 12px; color: var(--text-muted); }
.comment-actions span { cursor: pointer; display: flex; align-items: center; gap: 3px; }
.comment-actions span:hover { color: var(--primary); }

/* ===== 帮助中心 ===== */
.help-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.help-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.25s;
  cursor: pointer;
}
.help-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); background: #fff4ee; }
.help-icon { font-size: 36px; margin-bottom: 12px; }
.help-title { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.help-desc { font-size: 13px; color: var(--text-muted); }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.contact-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow);
}
.contact-icon { font-size: 32px; margin-bottom: 10px; }
.contact-title { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.contact-val { font-size: 14px; color: var(--primary); font-weight: 600; }

/* ===== 最新更新 ===== */
.latest-list { display: flex; flex-direction: column; gap: 10px; }
.latest-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: var(--shadow);
  transition: all 0.2s;
}
.latest-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); }
.latest-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.latest-num.hot { background: var(--accent); }
.latest-title { flex: 1; font-size: 14px; color: var(--text); font-weight: 500; }
.latest-title:hover { color: var(--primary); }
.latest-time { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

/* ===== 底部 Logo区 ===== */
.footer-logo-section {
  background: var(--primary);
  padding: 30px 0;
  text-align: center;
}
.footer-logo-section img {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  margin: 0 auto 10px;
  object-fit: cover;
}
.footer-logo-section h3 { color: #fff; font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.footer-logo-section p { color: rgba(255,255,255,0.8); font-size: 13px; }

/* ===== 底部主体 ===== */
.site-footer {
  background: #1a1a2e;
  color: #ccc;
  padding: 40px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
}
.footer-brand h3 { color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: #aaa; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: #aaa; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid #2d2d4a;
  padding: 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: #888;
}
.footer-bottom a { color: #888; }
.footer-bottom a:hover { color: var(--primary); }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 12px 0;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #ccc; }
.breadcrumb .current { color: var(--text); }

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  font-size: 14px;
  border: 1px solid var(--border);
  color: var(--text);
  transition: all 0.2s;
}
.pagination a:hover, .pagination .active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== 移动端适配 ===== */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .banner-content h1 { font-size: 24px; }
  .banner-content { padding: 0 30px; }
  .banner-img { height: 240px; }
}
@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; gap: 10px; }
  .main-nav { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .banner-img { height: 180px; }
  .banner-content h1 { font-size: 18px; }
  .stats-inner { gap: 20px; }
  .news-thumb { width: 100px; }
  .section { padding: 32px 0; }
}
@media (max-width: 400px) {
  .video-grid { grid-template-columns: 1fr; }
}

/* ===== 懒加载占位 ===== */
img[data-src] { background: #f0f0f0; }

/* ===== 通知弹窗 ===== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: rgba(0,0,0,0.8);
  color: #fff;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 14px;
  z-index: 9999;
  transition: transform 0.3s;
  pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ===== 内页样式 ===== */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  padding: 40px 0;
  text-align: center;
}
.page-hero h1 { font-size: 32px; font-weight: 800; margin-bottom: 8px; }
.page-hero p { font-size: 15px; opacity: 0.85; }

.sidebar { position: sticky; top: 80px; }
.sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.sidebar-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 2px solid var(--primary); }

.content-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  align-items: start;
}
@media (max-width: 900px) {
  .content-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

/* 热度标签 */
.hot-badge {
  display: inline-block;
  background: #ff4d4f;
  color: #fff;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: 4px;
  font-weight: 600;
  vertical-align: middle;
}
.new-badge {
  display: inline-block;
  background: var(--secondary);
  color: #fff;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: 4px;
  font-weight: 600;
  vertical-align: middle;
}