/* ============================================
   母狗官网 - 动物写真与视频社区 主样式表
   域名: 133152.cn
   版本: 1.0
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --primary: #0d6e6e;
  --primary-dark: #094d4d;
  --primary-light: #12a3a3;
  --secondary: #f5a623;
  --accent: #e8573a;
  --bg-main: #f7f9fc;
  --bg-card: #ffffff;
  --bg-dark: #1a2332;
  --bg-darker: #0f1722;
  --text-main: #2c3e50;
  --text-light: #6b7c93;
  --text-white: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background: var(--bg-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* === 干扰标签隐藏 === */
.noise-wrap {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  z-index: -9999;
}

/* === 头部导航 === */
.site-header {
  background: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-area img {
  height: 42px;
  width: auto;
}

.logo-area .brand-name {
  color: var(--text-white);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  color: rgba(255,255,255,0.85);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-white);
  background: rgba(255,255,255,0.1);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* === 搜索框 === */
.search-bar {
  background: var(--primary-dark);
  padding: 12px 0;
}

.search-bar .container {
  display: flex;
  justify-content: center;
}

.search-form {
  display: flex;
  max-width: 600px;
  width: 100%;
  position: relative;
}

.search-form input {
  flex: 1;
  padding: 12px 20px;
  border: 2px solid var(--primary-light);
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
  font-size: 0.95rem;
  outline: none;
  background: rgba(255,255,255,0.95);
  color: var(--text-main);
}

.search-form input::placeholder {
  color: var(--text-light);
}

.search-form button {
  padding: 12px 28px;
  background: var(--secondary);
  color: var(--text-white);
  border: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.search-form button:hover {
  background: #e09520;
}

/* === 面包屑导航 === */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.88rem;
  color: var(--text-light);
}

.breadcrumb a {
  color: var(--text-light);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb span {
  margin: 0 6px;
}

/* === Banner区域 === */
.hero-banner {
  position: relative;
  height: 520px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-banner .banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-banner .banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(13,110,110,0.85) 0%, rgba(9,77,77,0.7) 50%, rgba(0,0,0,0.4) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--text-white);
  max-width: 800px;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  line-height: 1.3;
}

.hero-content p {
  font-size: 1.15rem;
  opacity: 0.95;
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--secondary);
  color: var(--text-white);
}

.btn-primary:hover {
  background: #e09520;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245,166,35,0.4);
  color: var(--text-white);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255,255,255,0.6);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--text-white);
  color: var(--text-white);
}

/* === 区块通用样式 === */
.section {
  padding: 70px 0;
}

.section-alt {
  background: var(--bg-card);
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-white);
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-dark .section-title h2 {
  color: var(--text-white);
}

.section-title p {
  color: var(--text-light);
  font-size: 1.05rem;
  max-width: 650px;
  margin: 0 auto;
}

.section-dark .section-title p {
  color: rgba(255,255,255,0.7);
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}

.video-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.08);
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 56px;
  height: 56px;
  background: rgba(245,166,35,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 5;
}

.play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent white;
  margin-left: 3px;
}

.video-card:hover .play-btn {
  transform: translate(-50%, -50%) scale(1);
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  z-index: 5;
}

.video-info {
  padding: 14px 16px;
}

.video-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  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;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-light);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* === 模块卡片 === */
.module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.module-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-top: 4px solid var(--primary);
}

.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.module-card .icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  color: white;
}

.module-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.module-card p {
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.expert-card .avatar {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.expert-card .info {
  padding: 20px 16px;
}

.expert-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.expert-card .role {
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 10px;
}

.expert-card .desc {
  color: var(--text-light);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 14px;
}

.expert-card .btn-sm {
  display: inline-block;
  padding: 8px 20px;
  background: var(--primary);
  color: white;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}

.expert-card .btn-sm:hover {
  background: var(--primary-dark);
  color: white;
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .arrow {
  transition: transform 0.3s ease;
  font-size: 1.2rem;
  color: var(--text-light);
}

.faq-item.active .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  padding: 0 24px 20px;
  max-height: 300px;
}

/* === 用户评价 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  position: relative;
}

.review-card::before {
  content: '\201C';
  position: absolute;
  top: 12px;
  left: 20px;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.15;
  font-family: Georgia, serif;
  line-height: 1;
}

.review-card .stars {
  color: var(--secondary);
  font-size: 1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-card .content {
  color: var(--text-main);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.review-card .author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-card .author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
}

.review-card .author-info .name {
  font-weight: 600;
  font-size: 0.95rem;
}

.review-card .author-info .date {
  color: var(--text-light);
  font-size: 0.82rem;
}

/* === 合作品牌墙 === */
.brand-wall {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 30px 0;
}

.brand-wall .brand-item {
  width: 140px;
  height: 70px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  padding: 12px;
  transition: var(--transition);
  font-weight: 700;
  color: var(--text-light);
  font-size: 0.9rem;
}

.brand-wall .brand-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  align-items: start;
}

.contact-info-list {
  list-style: none;
}

.contact-info-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.95rem;
}

.contact-info-list li:last-child {
  border-bottom: none;
}

.contact-info-list .label {
  font-weight: 600;
  min-width: 80px;
  color: var(--text-main);
}

.contact-info-list .value {
  color: var(--text-light);
}

.qrcode-area {
  display: flex;
  gap: 30px;
  justify-content: center;
}

.qrcode-item {
  text-align: center;
}

.qrcode-item img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.qrcode-item p {
  font-size: 0.88rem;
  color: var(--text-light);
  font-weight: 500;
}

/* === 社交分享 === */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  padding: 20px 0;
}

.share-bar .share-label {
  font-weight: 600;
  font-size: 0.95rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
  transition: var(--transition);
}

.share-btn:hover {
  transform: translateY(-3px);
  color: white;
}

.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.douyin { background: #161823; }
.share-btn.bilibili { background: #00a1d6; }

/* === 页脚 === */
.site-footer {
  background: var(--bg-darker);
  color: rgba(255,255,255,0.7);
  padding: 50px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo-area {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-col h4 {
  color: var(--text-white);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--text-white);
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.6);
}

/* === How-To指南 === */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.howto-step {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
  counter-increment: step;
}

.howto-step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 16px;
}

.howto-step h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.howto-step p {
  color: var(--text-light);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* === 数据统计 === */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 0;
}

.stat-item {
  text-align: center;
}

.stat-item .number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.2;
}

.stat-item .label {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  margin-top: 6px;
}

/* === 内页通用 === */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 50px 0;
  text-align: center;
  color: var(--text-white);
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-header p {
  font-size: 1.05rem;
  opacity: 0.85;
}

.page-content {
  padding: 50px 0;
}

.page-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}

.page-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-main);
}

.page-content p {
  margin-bottom: 16px;
  line-height: 1.8;
  color: var(--text-light);
}

.content-img {
  border-radius: var(--radius);
  margin: 24px 0;
  box-shadow: var(--shadow);
}

/* === 社区话题标签 === */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(13,110,110,0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
}

.tag:hover {
  background: var(--primary);
  color: white;
}

/* === MCP服务前端 === */
.mcp-widget {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-top: 30px;
}

.mcp-widget h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-main);
}

.mcp-widget .mcp-input {
  display: flex;
  gap: 10px;
}

.mcp-widget input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  outline: none;
}

.mcp-widget input:focus {
  border-color: var(--primary);
}

.mcp-widget button {
  padding: 10px 24px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
}

.mcp-widget button:hover {
  background: var(--primary-dark);
}

.mcp-result {
  margin-top: 14px;
  padding: 14px;
  background: var(--bg-main);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-light);
  min-height: 40px;
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .expert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .howto-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 56px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  }
  .main-nav.show {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-banner {
    height: 400px;
  }
  .hero-content h1 {
    font-size: 1.8rem;
  }
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .module-grid {
    grid-template-columns: 1fr;
  }
  .expert-grid {
    grid-template-columns: 1fr;
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .howto-steps {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 45px 0;
  }
  .section-title h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
  .hero-banner {
    height: 340px;
  }
  .hero-content h1 {
    font-size: 1.5rem;
  }
  .qrcode-area {
    flex-direction: column;
    align-items: center;
  }
}

/* === 懒加载 === */
img[data-src] {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img[data-src].loaded {
  opacity: 1;
}

/* === 动画 === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* === Logo补丁样式 === */
.logo-area .nav-logo {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}
.logo-area .footer-logo {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}
.logo-area .site-icon {
  width: 32px;
  height: 32px;
  border-radius: 4px;
}
.logo-area .site-logo {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  margin-left: 4px;
}
.footer-brand .logo-area img {
  width: 50px;
  height: 50px;
  border-radius: 8px;
}

/* === Video标签样式 === */
.video-thumb video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.video-thumb:hover video {
  opacity: 1;
}
.video-thumb video + img {
  transition: opacity 0.3s ease;
}
.video-thumb:hover video + img {
  opacity: 0;
}

/* === EEAT作者信息样式 === */
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-light);
}
.article-meta .author {
  font-weight: 600;
  color: var(--primary);
}
.article-meta .date {
  color: var(--text-light);
}
.article-meta .update {
  color: var(--text-light);
}

@media (max-width: 768px) {
  .logo-area .site-logo {
    width: 36px;
    height: 36px;
  }
  .logo-area .site-icon {
    width: 28px;
    height: 28px;
  }
  .article-meta {
    flex-wrap: wrap;
    gap: 8px;
  }
}