/* ===== 鲁班尺频道页共享样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: #F5F0EB;
  font-family: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  color: #3E2723;
  display: flex;
  flex-direction: column;
}

a { text-decoration: none; color: inherit; }

/* ===== 顶部导航 ===== */
.channel-top-bar {
  background: linear-gradient(135deg, #5D4037 0%, #4E342E 100%);
  padding: 0 48px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid #D1A36B;
  position: sticky;
  top: 0;
  z-index: 100;
}

.channel-top-bar .logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.channel-top-bar .logo-icon {
  font-size: 28px;
  line-height: 1;
}

.channel-top-bar .logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #F5F0EB;
  font-family: "Songti SC", "Noto Serif SC", serif;
  letter-spacing: 4px;
}

.channel-top-bar .logo-sub {
  font-size: 12px;
  color: #BCAAA4;
  margin-left: 8px;
}

.channel-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.channel-nav a {
  color: #BCAAA4;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.channel-nav a:hover {
  color: #F5F0EB;
}

.channel-nav a.active {
  color: #D1A36B;
  border-bottom-color: #D1A36B;
}

/* ===== 面包屑 ===== */
.channel-breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 16px 24px 0;
  font-size: 13px;
  color: #8D6E63;
}

.channel-breadcrumb a {
  color: #8D6E63;
  transition: color 0.2s;
}

.channel-breadcrumb a:hover {
  color: #5D4037;
}

.channel-breadcrumb .sep {
  margin: 0 8px;
  color: #BCAAA4;
}

.channel-breadcrumb .current {
  color: #5D4037;
  font-weight: 500;
}

/* ===== 频道头部 ===== */
.channel-header {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 24px 24px 20px;
  border-bottom: 1px solid rgba(209, 163, 107, 0.15);
}

.channel-header h1 {
  font-family: "Songti SC", "Noto Serif SC", serif;
  font-size: 32px;
  font-weight: 700;
  color: #3E2723;
  margin-bottom: 8px;
}

.channel-header .channel-desc {
  font-size: 14px;
  color: #8D6E63;
  line-height: 1.6;
}

.channel-header .channel-count {
  margin-top: 10px;
  font-size: 12px;
  color: #BCAAA4;
}

.channel-header .channel-count span {
  color: #D1A36B;
  font-weight: 600;
  font-size: 14px;
}

/* ===== 文章卡片网格 ===== */
.article-card-grid {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  flex: 1;
}

/* ===== 单篇文章卡片 ===== */
.article-card {
  background: #FFFDFB;
  border: 1px solid rgba(209, 163, 107, 0.12);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.article-card:hover {
  box-shadow: 0 4px 24px rgba(62, 39, 35, 0.1);
  border-color: rgba(209, 163, 107, 0.3);
}

.article-card .card-cover {
  width: 160px;
  min-width: 160px;
  height: 120px;
  background: linear-gradient(135deg, #D7CCC8 0%, #BCAAA4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.article-card .card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-card .card-cover .cover-placeholder {
  font-size: 36px;
  color: rgba(255, 255, 255, 0.6);
}

.article-card .card-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.article-card .card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.article-card .card-tag {
  font-size: 11px;
  color: #D1A36B;
  background: rgba(209, 163, 107, 0.1);
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 500;
}

.article-card .card-date {
  font-size: 12px;
  color: #BCAAA4;
}

.article-card .card-title {
  font-size: 16px;
  font-weight: 600;
  color: #3E2723;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}

.article-card:hover .card-title {
  color: #5D4037;
}

.article-card .card-summary {
  font-size: 13px;
  color: #8D6E63;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
  flex: 1;
}

.article-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-card .card-views {
  font-size: 12px;
  color: #BCAAA4;
}

.article-card .card-link {
  font-size: 13px;
  color: #D1A36B;
  font-weight: 500;
  transition: color 0.2s;
}

.article-card .card-link:hover {
  color: #C9973B;
}

.article-card .card-link i {
  font-size: 11px;
  margin-left: 4px;
}

/* ===== 加载更多 ===== */
.load-more-wrap {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 8px 24px 40px;
  text-align: center;
}

.load-more-btn {
  display: inline-block;
  padding: 12px 40px;
  background: #FFFDFB;
  border: 1px solid rgba(209, 163, 107, 0.3);
  border-radius: 24px;
  color: #8D6E63;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.load-more-btn:hover {
  background: rgba(209, 163, 107, 0.08);
  border-color: #D1A36B;
  color: #5D4037;
}

.load-more-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.load-more-btn.loading {
  pointer-events: none;
}

/* ===== 加载/空状态 ===== */
.channel-loading {
  text-align: center;
  padding: 60px 20px;
  color: #BCAAA4;
  grid-column: 1 / -1;
}

.channel-loading .spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(209, 163, 107, 0.2);
  border-top-color: #D1A36B;
  border-radius: 50%;
  animation: channelSpin 0.8s linear infinite;
  margin: 0 auto 12px;
}

@keyframes channelSpin { to { transform: rotate(360deg); } }

.channel-empty {
  text-align: center;
  padding: 60px 20px;
  color: #BCAAA4;
  grid-column: 1 / -1;
}

.channel-empty .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.channel-empty p {
  font-size: 14px;
}

/* ===== 底部 ===== */
.channel-footer {
  background: #3E2723;
  padding: 24px 48px;
  text-align: center;
  margin-top: auto;
}

.channel-footer .copyright {
  font-size: 12px;
  color: #BCAAA4;
  line-height: 1.6;
  margin-bottom: 8px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.channel-footer .icp {
  font-size: 12px;
  color: #8D6E63;
}

.channel-footer .icp a {
  color: #8D6E63;
  transition: color 0.2s;
}

.channel-footer .icp a:hover {
  color: #BCAAA4;
}

.channel-footer .icp .sep {
  margin: 0 8px;
  color: #5D4037;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .channel-top-bar {
    padding: 0 16px;
    height: 56px;
  }

  .channel-top-bar .logo-text {
    font-size: 16px;
    letter-spacing: 2px;
  }

  .channel-top-bar .logo-sub {
    display: none;
  }

  .channel-nav {
    gap: 16px;
  }

  .channel-nav a {
    font-size: 13px;
  }

  .channel-breadcrumb {
    padding: 12px 16px 0;
    font-size: 12px;
  }

  .channel-header {
    padding: 16px 16px 14px;
  }

  .channel-header h1 {
    font-size: 24px;
  }

  .channel-header .channel-desc {
    font-size: 13px;
  }

  .article-card-grid {
    grid-template-columns: 1fr;
    padding: 16px;
    gap: 14px;
  }

  .article-card .card-cover {
    width: 120px;
    min-width: 120px;
    height: 90px;
  }

  .article-card .card-body {
    padding: 12px 14px;
  }

  .article-card .card-title {
    font-size: 14px;
    -webkit-line-clamp: 2;
  }

  .article-card .card-summary {
    font-size: 12px;
    -webkit-line-clamp: 1;
  }

  .load-more-wrap {
    padding: 8px 16px 32px;
  }

  .channel-footer {
    padding: 20px 16px;
  }

  .channel-footer .copyright {
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  .channel-nav {
    gap: 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .channel-nav::-webkit-scrollbar { display: none; }

  .channel-nav a {
    white-space: nowrap;
    font-size: 12px;
  }

  .article-card .card-cover {
    width: 100px;
    min-width: 100px;
    height: 80px;
  }

  .article-card .card-cover .cover-placeholder {
    font-size: 28px;
  }
}