/* ===== 蘑菇视频 主样式 ===== */
:root {
  --primary: #e8420a;
  --primary-dark: #c23508;
  --secondary: #ff7043;
  --accent: #ff9800;
  --bg: #f5f5f5;
  --white: #ffffff;
  --text: #222222;
  --text-muted: #666666;
  --border: #e0e0e0;
  --card-shadow: 0 2px 12px rgba(0,0,0,0.08);
  --radius: 8px;
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; scroll-behavior:smooth; }
body { font-family:var(--font); background:var(--bg); color:var(--text); line-height:1.7; }
a { color:inherit; text-decoration:none; }
img { max-width:100%; height:auto; display:block; }
ul { list-style:none; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background:var(--primary);
  color:#fff;
  font-size:13px;
  padding:6px 0;
  text-align:center;
  letter-spacing:0.5px;
}
.top-bar a { color:#ffe0b2; margin:0 8px; }
.top-bar a:hover { color:#fff; text-decoration:underline; }

/* ===== 头部导航 ===== */
.site-header {
  background:var(--white);
  box-shadow:0 2px 8px rgba(0,0,0,0.1);
  position:sticky;
  top:0;
  z-index:1000;
}
.header-inner {
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:64px;
}
.site-logo {
  display:flex;
  align-items:center;
  gap:10px;
  font-size:22px;
  font-weight:700;
  color:var(--primary);
}
.site-logo .logo-icon {
  width:40px; height:40px;
  background:var(--primary);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:20px;
}
.main-nav { display:flex; align-items:center; gap:4px; }
.main-nav a {
  padding:8px 14px;
  border-radius:4px;
  font-size:15px;
  font-weight:500;
  transition:all 0.2s;
  color:var(--text);
}
.main-nav a:hover, .main-nav a.active {
  background:var(--primary);
  color:#fff;
}
.header-actions { display:flex; align-items:center; gap:12px; }
.btn-primary {
  background:var(--primary);
  color:#fff;
  padding:8px 20px;
  border-radius:20px;
  font-size:14px;
  font-weight:600;
  transition:background 0.2s;
  border:none;
  cursor:pointer;
}
.btn-primary:hover { background:var(--primary-dark); }

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background:var(--white);
  border-bottom:1px solid var(--border);
  padding:12px 0;
}
.search-bar-inner {
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:12px;
}
.search-form {
  display:flex;
  flex:1;
  max-width:600px;
  border:2px solid var(--primary);
  border-radius:24px;
  overflow:hidden;
  background:#fff;
}
.search-form input {
  flex:1;
  border:none;
  outline:none;
  padding:9px 18px;
  font-size:15px;
  font-family:var(--font);
  color:var(--text);
}
.search-form button {
  background:var(--primary);
  color:#fff;
  border:none;
  padding:9px 22px;
  font-size:15px;
  cursor:pointer;
  font-family:var(--font);
  font-weight:600;
  transition:background 0.2s;
}
.search-form button:hover { background:var(--primary-dark); }
.search-hot-tags { display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.search-hot-tags span { font-size:13px; color:var(--text-muted); }
.search-hot-tags a {
  font-size:13px;
  color:var(--primary);
  background:#fff3ee;
  padding:3px 10px;
  border-radius:12px;
  transition:all 0.2s;
}
.search-hot-tags a:hover { background:var(--primary); color:#fff; }

/* ===== 面包屑 ===== */
.breadcrumb {
  max-width:1200px;
  margin:0 auto;
  padding:10px 20px;
  font-size:13px;
  color:var(--text-muted);
}
.breadcrumb a { color:var(--primary); }
.breadcrumb span { margin:0 6px; }

/* ===== 容器 ===== */
.container { max-width:1200px; margin:0 auto; padding:0 20px; }
.section { padding:40px 0; }
.section-header {
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:24px;
  border-bottom:2px solid var(--primary);
  padding-bottom:12px;
}
.section-title {
  font-size:20px;
  font-weight:700;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:8px;
}
.section-title::before {
  content:'';
  display:inline-block;
  width:4px; height:20px;
  background:var(--primary);
  border-radius:2px;
}
.section-more {
  font-size:14px;
  color:var(--primary);
  display:flex;
  align-items:center;
  gap:4px;
}
.section-more:hover { text-decoration:underline; }

/* ===== Hero Banner ===== */
.hero-banner {
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  margin-bottom:0;
}
.hero-banner img {
  width:100%;
  height:420px;
  object-fit:cover;
}
.hero-overlay {
  position:absolute;
  inset:0;
  background:linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
  display:flex;
  align-items:center;
  padding:40px;
}
.hero-content { max-width:520px; color:#fff; }
.hero-tag {
  display:inline-block;
  background:var(--primary);
  color:#fff;
  font-size:12px;
  font-weight:700;
  padding:3px 10px;
  border-radius:3px;
  margin-bottom:12px;
  letter-spacing:1px;
}
.hero-content h1 {
  font-size:28px;
  font-weight:800;
  line-height:1.4;
  margin-bottom:12px;
  text-shadow:0 2px 4px rgba(0,0,0,0.3);
}
.hero-content p {
  font-size:15px;
  opacity:0.9;
  margin-bottom:20px;
  line-height:1.6;
}
.hero-meta { display:flex; align-items:center; gap:16px; font-size:13px; opacity:0.8; }
.hero-meta span { display:flex; align-items:center; gap:4px; }

/* ===== 视频卡片 ===== */
.video-grid {
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:20px;
}
.video-card {
  background:var(--white);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--card-shadow);
  transition:transform 0.25s, box-shadow 0.25s;
  cursor:pointer;
}
.video-card:hover {
  transform:translateY(-4px);
  box-shadow:0 8px 24px rgba(0,0,0,0.15);
}
.video-thumb {
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
}
.video-thumb img {
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 0.3s;
}
.video-card:hover .video-thumb img { transform:scale(1.05); }
.video-play-btn {
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(0,0,0,0.35);
  opacity:0;
  transition:opacity 0.25s;
}
.video-card:hover .video-play-btn { opacity:1; }
.play-circle {
  width:52px; height:52px;
  background:rgba(255,255,255,0.92);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 4px 16px rgba(0,0,0,0.3);
  transition:transform 0.2s;
}
.video-card:hover .play-circle { transform:scale(1.1); }
.play-circle svg { width:22px; height:22px; fill:var(--primary); margin-left:3px; }
.video-duration {
  position:absolute;
  bottom:8px;
  right:8px;
  background:rgba(0,0,0,0.75);
  color:#fff;
  font-size:12px;
  padding:2px 6px;
  border-radius:3px;
}
.video-info { padding:12px; }
.video-title {
  font-size:14px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  color:var(--text);
}
.video-card:hover .video-title { color:var(--primary); }
.video-meta {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-muted);
}
.video-stats { display:flex; gap:10px; }
.video-stats span { display:flex; align-items:center; gap:3px; }
.video-category {
  background:#fff3ee;
  color:var(--primary);
  padding:2px 8px;
  border-radius:10px;
  font-size:11px;
  font-weight:600;
}

/* ===== 新闻列表 ===== */
.news-grid {
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
}
.news-card {
  background:var(--white);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--card-shadow);
  transition:transform 0.25s;
}
.news-card:hover { transform:translateY(-3px); }
.news-card-img {
  aspect-ratio:16/9;
  overflow:hidden;
}
.news-card-img img {
  width:100%; height:100%;
  object-fit:cover;
  transition:transform 0.3s;
}
.news-card:hover .news-card-img img { transform:scale(1.05); }
.news-card-body { padding:16px; }
.news-card-tag {
  display:inline-block;
  background:var(--primary);
  color:#fff;
  font-size:11px;
  font-weight:700;
  padding:2px 8px;
  border-radius:3px;
  margin-bottom:8px;
}
.news-card-title {
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card:hover .news-card-title { color:var(--primary); }
.news-card-desc {
  font-size:13px;
  color:var(--text-muted);
  line-height:1.6;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:10px;
}
.news-card-meta {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-muted);
}
.news-card-author { display:flex; align-items:center; gap:6px; }
.news-card-author img {
  width:22px; height:22px;
  border-radius:50%;
  object-fit:cover;
}

/* ===== 主内容+侧边栏布局 ===== */
.content-layout {
  display:grid;
  grid-template-columns:1fr 300px;
  gap:30px;
  align-items:start;
}
.sidebar { display:flex; flex-direction:column; gap:24px; }
.sidebar-card {
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--card-shadow);
  overflow:hidden;
}
.sidebar-card-header {
  background:var(--primary);
  color:#fff;
  padding:12px 16px;
  font-size:15px;
  font-weight:700;
}
.sidebar-card-body { padding:16px; }

/* 热门标签 */
.tag-cloud { display:flex; flex-wrap:wrap; gap:8px; }
.tag-item {
  background:#f5f5f5;
  color:var(--text);
  padding:5px 12px;
  border-radius:14px;
  font-size:13px;
  transition:all 0.2s;
  border:1px solid var(--border);
}
.tag-item:hover { background:var(--primary); color:#fff; border-color:var(--primary); }

/* 热门视频排行 */
.rank-list { display:flex; flex-direction:column; gap:12px; }
.rank-item { display:flex; gap:12px; align-items:flex-start; }
.rank-num {
  width:22px; height:22px;
  border-radius:4px;
  background:#f0f0f0;
  color:var(--text-muted);
  font-size:12px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-top:2px;
}
.rank-item:nth-child(1) .rank-num { background:var(--primary); color:#fff; }
.rank-item:nth-child(2) .rank-num { background:#ff7043; color:#fff; }
.rank-item:nth-child(3) .rank-num { background:#ff9800; color:#fff; }
.rank-title { font-size:13px; line-height:1.5; color:var(--text); }
.rank-title:hover { color:var(--primary); }
.rank-views { font-size:11px; color:var(--text-muted); margin-top:2px; }

/* ===== 专题策划 ===== */
.topics-grid {
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
}
.topic-card {
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:16/9;
  cursor:pointer;
}
.topic-card img {
  width:100%; height:100%;
  object-fit:cover;
  transition:transform 0.3s;
}
.topic-card:hover img { transform:scale(1.06); }
.topic-overlay {
  position:absolute;
  inset:0;
  background:linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 60%);
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:16px;
  color:#fff;
}
.topic-tag {
  display:inline-block;
  background:var(--accent);
  color:#fff;
  font-size:11px;
  font-weight:700;
  padding:2px 8px;
  border-radius:3px;
  margin-bottom:6px;
  width:fit-content;
}
.topic-title { font-size:15px; font-weight:700; line-height:1.4; }
.topic-count { font-size:12px; opacity:0.8; margin-top:4px; }

/* ===== 推荐作者 ===== */
.authors-grid {
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:20px;
}
.author-card {
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--card-shadow);
  padding:24px 16px;
  text-align:center;
  transition:transform 0.25s;
}
.author-card:hover { transform:translateY(-4px); }
.author-avatar {
  width:72px; height:72px;
  border-radius:50%;
  object-fit:cover;
  margin:0 auto 12px;
  border:3px solid var(--primary);
}
.author-name { font-size:15px; font-weight:700; margin-bottom:4px; }
.author-desc { font-size:12px; color:var(--text-muted); margin-bottom:12px; line-height:1.5; }
.author-stats { display:flex; justify-content:center; gap:20px; margin-bottom:14px; }
.author-stat { text-align:center; }
.author-stat .num { font-size:16px; font-weight:700; color:var(--primary); }
.author-stat .label { font-size:11px; color:var(--text-muted); }
.btn-follow {
  background:transparent;
  border:1.5px solid var(--primary);
  color:var(--primary);
  padding:6px 20px;
  border-radius:16px;
  font-size:13px;
  cursor:pointer;
  transition:all 0.2s;
  font-family:var(--font);
}
.btn-follow:hover { background:var(--primary); color:#fff; }

/* ===== FAQ ===== */
.faq-list { display:flex; flex-direction:column; gap:12px; }
.faq-item {
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--card-shadow);
  overflow:hidden;
}
.faq-question {
  padding:16px 20px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  transition:background 0.2s;
}
.faq-question:hover { background:#fff8f5; }
.faq-question.active { background:#fff3ee; color:var(--primary); }
.faq-icon {
  width:22px; height:22px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  flex-shrink:0;
  transition:transform 0.3s;
}
.faq-question.active .faq-icon { transform:rotate(45deg); }
.faq-answer {
  display:none;
  padding:0 20px 16px;
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
  border-top:1px solid var(--border);
}
.faq-answer.show { display:block; }

/* ===== 用户评论 ===== */
.reviews-grid {
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:20px;
}
.review-card {
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--card-shadow);
  padding:20px;
}
.review-header { display:flex; align-items:center; gap:10px; margin-bottom:12px; }
.review-avatar {
  width:40px; height:40px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:700;
  flex-shrink:0;
}
.review-user-info .name { font-size:14px; font-weight:600; }
.review-user-info .date { font-size:12px; color:var(--text-muted); }
.review-stars { color:#f59e0b; font-size:14px; margin-bottom:8px; }
.review-text { font-size:13px; color:var(--text-muted); line-height:1.7; }

/* ===== 投稿联系 ===== */
.contact-section {
  background:linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color:#fff;
  border-radius:var(--radius);
  padding:48px 40px;
  text-align:center;
}
.contact-section h2 { font-size:26px; font-weight:800; margin-bottom:12px; }
.contact-section p { font-size:15px; opacity:0.9; margin-bottom:28px; }
.contact-btns { display:flex; justify-content:center; gap:16px; flex-wrap:wrap; }
.btn-white {
  background:#fff;
  color:var(--primary);
  padding:12px 28px;
  border-radius:24px;
  font-size:15px;
  font-weight:700;
  transition:all 0.2s;
  border:none;
  cursor:pointer;
  display:inline-block;
}
.btn-white:hover { background:#ffe0b2; transform:translateY(-2px); }
.btn-outline-white {
  background:transparent;
  color:#fff;
  padding:12px 28px;
  border-radius:24px;
  font-size:15px;
  font-weight:700;
  border:2px solid rgba(255,255,255,0.7);
  transition:all 0.2s;
  display:inline-block;
}
.btn-outline-white:hover { background:rgba(255,255,255,0.15); }

/* ===== 页脚 ===== */
.site-footer {
  background:#1a1a1a;
  color:#ccc;
  padding:48px 0 0;
  margin-top:60px;
}
.footer-grid {
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  margin-bottom:40px;
}
.footer-brand .logo { font-size:20px; font-weight:700; color:#fff; margin-bottom:12px; }
.footer-brand p { font-size:13px; line-height:1.8; color:#aaa; }
.footer-col h4 { font-size:15px; font-weight:700; color:#fff; margin-bottom:16px; }
.footer-col ul { display:flex; flex-direction:column; gap: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 #333;
  padding:20px;
  text-align:center;
  font-size:13px;
  color:#777;
  max-width:1200px;
  margin:0 auto;
}
.footer-bottom a { color:#aaa; }
.footer-bottom a:hover { color:var(--primary); }
.footer-domain { color:var(--secondary); font-weight:600; }

/* ===== 页面内容区 ===== */
.page-hero {
  background:linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color:#fff;
  padding:48px 0;
  text-align:center;
}
.page-hero h1 { font-size:32px; font-weight:800; margin-bottom:10px; }
.page-hero p { font-size:16px; opacity:0.9; }

/* ===== 文章页 ===== */
.article-layout {
  display:grid;
  grid-template-columns:1fr 300px;
  gap:30px;
  align-items:start;
}
.article-body { background:var(--white); border-radius:var(--radius); box-shadow:var(--card-shadow); padding:32px; }
.article-header { margin-bottom:24px; border-bottom:1px solid var(--border); padding-bottom:20px; }
.article-title { font-size:24px; font-weight:800; line-height:1.4; margin-bottom:12px; }
.article-meta { display:flex; flex-wrap:wrap; gap:16px; font-size:13px; color:var(--text-muted); }
.article-meta span { display:flex; align-items:center; gap:4px; }
.article-content { font-size:15px; line-height:1.9; color:#333; }
.article-content h2 { font-size:20px; font-weight:700; margin:28px 0 14px; color:var(--text); }
.article-content h3 { font-size:17px; font-weight:700; margin:22px 0 10px; color:var(--text); }
.article-content p { margin-bottom:16px; }
.article-content img { border-radius:var(--radius); margin:16px 0; }
.article-tags { margin-top:24px; padding-top:20px; border-top:1px solid var(--border); display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
.article-tags span { font-size:13px; color:var(--text-muted); }

/* ===== 分页 ===== */
.pagination { display:flex; justify-content:center; gap:8px; margin-top:32px; }
.page-btn {
  width:36px; height:36px;
  border-radius:4px;
  border:1px solid var(--border);
  background:var(--white);
  color:var(--text);
  font-size:14px;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:all 0.2s;
  font-family:var(--font);
}
.page-btn:hover, .page-btn.active { background:var(--primary); color:#fff; border-color:var(--primary); }

/* ===== 响应式 ===== */
@media (max-width:1024px) {
  .video-grid { grid-template-columns:repeat(3, 1fr); }
  .authors-grid { grid-template-columns:repeat(2, 1fr); }
  .reviews-grid { grid-template-columns:repeat(2, 1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:768px) {
  .header-inner { height:56px; }
  .main-nav { display:none; }
  .video-grid { grid-template-columns:repeat(2, 1fr); }
  .news-grid { grid-template-columns:1fr; }
  .topics-grid { grid-template-columns:repeat(2, 1fr); }
  .authors-grid { grid-template-columns:repeat(2, 1fr); }
  .reviews-grid { grid-template-columns:1fr; }
  .content-layout { grid-template-columns:1fr; }
  .article-layout { grid-template-columns:1fr; }
  .hero-banner img { height:260px; }
  .hero-content h1 { font-size:20px; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .contact-section { padding:32px 20px; }
}
@media (max-width:480px) {
  .video-grid { grid-template-columns:1fr; }
  .topics-grid { grid-template-columns:1fr; }
  .authors-grid { grid-template-columns:1fr; }
}

/* ===== 工具类 ===== */
.text-primary { color:var(--primary); }
.text-muted { color:var(--text-muted); }
.font-bold { font-weight:700; }
.mt-8 { margin-top:8px; }
.mt-16 { margin-top:16px; }
.mb-16 { margin-bottom:16px; }
.flex { display:flex; }
.items-center { align-items:center; }
.gap-8 { gap:8px; }
.w-full { width:100%; }