/* ============================================================
 * site.css — Frontend Enhancement Components
 * Reading progress / Back-to-top / Search / Float consult
 * Mobile bottom nav / TOC / Search results / Site network
 * Color: Muted Blue + Champagne Gold + Warm Ivory
 * ============================================================ */

/* 阅读进度条 */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 9999;
  transition: width 0.15s ease;
}

/* 头部搜索框 */
.header-search {
  display: flex;
  align-items: center;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  background: var(--bg);
  flex-shrink: 0;
}
.header-search input {
  border: none;
  outline: none;
  padding: 6px 14px;
  font-size: 0.82rem;
  width: 160px;
  background: transparent;
  font-family: inherit;
  color: var(--text);
}
.header-search button {
  border: none;
  background: transparent;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-lighter);
}
.header-search button:hover { color: var(--primary); }
@media (max-width: 768px) {
  .header-search { display: none; }
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 76px;
  width: 42px;
  height: 42px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 9998;
  box-shadow: var(--shadow-md);
  border: none;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* 在线咨询浮动入口 */
.float-consult {
  position: fixed;
  right: 20px;
  bottom: 130px;
  z-index: 9997;
}
.float-consult-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--primary);
  color: #fff;
  padding: 10px 14px;
  border-radius: var(--radius);
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}
.float-consult-btn:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
}
.float-consult-icon { font-size: 20px; }
.float-consult-text {
  font-size: 0.72rem;
  margin-top: 2px;
  white-space: nowrap;
}
@media (max-width: 768px) {
  .float-consult { display: none; }
}

/* 移动端底部导航 */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 1px solid var(--border);
  z-index: 9996;
  padding: 4px 0;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.04);
}
.mobile-bottom-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--text-light);
  padding: 5px 0;
  font-size: 0.7rem;
}
.mobile-bottom-nav a.active { color: var(--primary); }
.mobile-bottom-nav .mbn-icon { font-size: 19px; line-height: 1; }
.mobile-bottom-nav .mbn-label { margin-top: 2px; }
.mobile-bottom-nav .mbn-appointment { flex: 1.2; color: var(--primary); }
.mobile-bottom-nav .mbn-appointment .mbn-icon { font-size: 21px; }
@media (max-width: 768px) {
  .mobile-bottom-nav { display: flex; }
  body { padding-bottom: 56px; }
}

/* TOC 目录 */
.article-toc {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 18px 0;
}
.article-toc-title {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.article-toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}
.article-toc li { padding: 3px 0; }
.article-toc li.toc-level-3 { padding-left: 18px; }
.article-toc a {
  color: var(--primary);
  text-decoration: none;
  font-size: 0.85rem;
}
.article-toc a:hover { text-decoration: underline; }

/* 搜索结果高亮 */
mark {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 1px 3px;
  border-radius: 2px;
}

/* 搜索结果页 */
.search-results {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}
.search-results h1 { font-size: 1.4rem; margin-bottom: 18px; font-weight: 700; }
.search-meta { color: var(--text-light); margin-bottom: 18px; font-size: 0.88rem; }
.search-results .search-box { margin-bottom: 20px; }
.search-results .search-box input {
  width: 70%;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--text);
}
.search-results .search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(107,140,170,0.12);
}
.search-results .search-box button {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
}
.search-results .search-box button:hover { background: var(--primary-dark); }
.search-result-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
}
.search-result-item h3 { margin: 0 0 5px; font-size: 1rem; font-weight: 600; }
.search-result-item h3 a { color: var(--primary); text-decoration: none; }
.search-result-item h3 a:hover { text-decoration: underline; }
.search-result-item .excerpt {
  color: var(--text-light);
  font-size: 0.85rem;
  line-height: 1.6;
}
.search-result-item .meta {
  color: var(--text-lighter);
  font-size: 0.75rem;
  margin-top: 4px;
}
.search-hot-keywords { margin-top: 12px; }
.search-hot-keywords p { color: var(--text-light); margin-bottom: 8px; font-size: 0.85rem; }
.search-hot-keywords a {
  display: inline-block;
  background: var(--bg-alt);
  color: var(--text);
  padding: 4px 12px;
  border-radius: 14px;
  margin: 3px 3px 0 0;
  font-size: 0.8rem;
  text-decoration: none;
  transition: all var(--transition);
}
.search-hot-keywords a:hover { background: var(--primary-light); color: var(--primary); }

/* 文章浏览量 */
.article-views { color: var(--text-lighter); font-size: 0.8rem; }

/* 搜索建议下拉 */
.search-suggest-dropdown {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  max-width: 400px;
  z-index: 9999;
  padding: 4px 0;
}
.search-suggest-dropdown > div {
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text);
}
.search-suggest-dropdown > div:hover { background: var(--primary-light); color: var(--primary); }

/* 广告位 */
.ad-header { text-align: center; background: var(--bg-alt); padding: 8px 0; }
.ad-header img { max-height: 80px; margin: 0 auto; }
.ad-footer { text-align: center; padding: 14px 0; border-top: 1px solid rgba(255,255,255,0.08); }
.ad-footer img { max-height: 56px; margin: 0 8px; display: inline-block; }

/* ── 分站互链网络（手风琴折叠）── */
.site-network {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0 14px 0;
  margin-top: 16px;
}

/* 头部：标题 + 展开/收起按钮 */
.site-network-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.site-network-header h4 {
  color: rgba(255,255,255,0.5);
  font-size: 0.88rem;
  margin: 0;
  font-weight: 600;
}
.site-network-header .site-count {
  font-weight: 400;
  color: rgba(255,255,255,0.3);
  font-size: 0.78rem;
}
.site-network-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.site-network-all-link {
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  text-decoration: none;
  transition: color var(--transition);
}
.site-network-all-link:hover {
  color: var(--accent, #c4a87a);
}
.site-network-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.45);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.site-network-toggle:hover {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
}
.site-network-toggle svg {
  transition: transform 0.25s ease;
}
.site-network-toggle.is-expanded svg {
  transform: rotate(180deg);
}

/* 手风琴容器 */
.site-network-accordion {
  display: flex;
  flex-wrap: wrap;
  gap: 0 20px;
}

/* 单个大区折叠面板 */
.sn-region {
  flex: 1 1 150px;
  min-width: 140px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.sn-region[open] {
  border-bottom-color: rgba(255,255,255,0.08);
}

/* summary = 大区标题行 */
.sn-region summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 8px 0;
  cursor: pointer;
  user-select: none;
  list-style: none;        /* 隐藏默认三角 */
  outline: none;
  transition: color var(--transition);
}
.sn-region summary::-webkit-details-marker { display: none; }
.sn-region summary:hover { color: rgba(255,255,255,0.8); }

.sn-region .sn-region-name {
  color: rgba(255,255,255,0.55);
  font-size: 0.82rem;
  font-weight: 600;
}
.sn-region .sn-region-count {
  color: rgba(255,255,255,0.25);
  font-size: 0.7rem;
  margin-left: auto;
  margin-right: 6px;
}
.sn-region .sn-arrow {
  color: rgba(255,255,255,0.3);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.sn-region[open] .sn-arrow {
  transform: rotate(180deg);
}
.sn-region[open] .sn-region-name {
  color: var(--accent, #c4a87a);
}

/* 站点列表 */
.sn-region-list {
  list-style: none;
  padding: 0 0 10px 4px;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 2px 8px;
}
.sn-region-list li {
  margin: 0;
  line-height: 1.6;
}
.sn-region-list a {
  color: rgba(255,255,255,0.42);
  font-size: 0.76rem;
  text-decoration: none;
  transition: color var(--transition);
  white-space: nowrap;
}
.sn-region-list a:hover {
  color: var(--accent, #c4a87a);
}
.sn-region-list .current {
  color: var(--accent, #c4a87a);
  font-size: 0.76rem;
  font-weight: 600;
  white-space: nowrap;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
  .site-network-accordion {
    gap: 0 12px;
  }
  .sn-region {
    flex: 1 1 130px;
    min-width: 120px;
  }
}
@media (max-width: 480px) {
  .site-network-accordion {
    gap: 0;
  }
  .sn-region {
    flex: 1 1 100%;
    min-width: 0;
  }
}

/* ============================================================
 * 全国分站导航页 (/sites)
 * ============================================================ */

/* 搜索框 */
.sites-search-box {
  position: relative;
  max-width: 480px;
  margin: 0 auto 28px;
}
.sites-search-box input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: 1px solid #e0e0e0;
  border-radius: 24px;
  font-size: 0.95rem;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.sites-search-box input:focus {
  border-color: var(--primary, #6b8caa);
  box-shadow: 0 0 0 3px rgba(107, 140, 170, 0.12);
}
.sites-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: #999;
  display: flex;
}

/* Tab 切换 */
.sites-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.sites-tab {
  padding: 10px 24px;
  border: 1px solid #e0e0e0;
  border-radius: 20px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  color: #666;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.sites-tab:hover {
  border-color: var(--primary, #6b8caa);
  color: var(--primary, #6b8caa);
}
.sites-tab.active {
  background: var(--primary, #6b8caa);
  border-color: var(--primary, #6b8caa);
  color: #fff;
}
.sites-tab .tab-count {
  font-size: 0.75rem;
  background: rgba(0,0,0,0.08);
  padding: 1px 8px;
  border-radius: 10px;
  font-weight: 600;
}
.sites-tab.active .tab-count {
  background: rgba(255,255,255,0.25);
  color: #fff;
}

/* 主站横幅 */
.sites-main-banner {
  text-align: center;
  margin-bottom: 32px;
}
.sites-main-banner a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--primary, #6b8caa), var(--accent, #c4a87a));
  color: #fff;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.sites-main-banner a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(107, 140, 170, 0.3);
}
.sites-main-banner .main-badge {
  background: rgba(255,255,255,0.25);
  padding: 2px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 600;
}
.sites-main-banner strong {
  font-size: 1.1rem;
}
.sites-main-banner .main-domain {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* Tab 内容 */
.sites-tab-content {
  display: none;
}
.sites-tab-content.active {
  display: block;
}

/* 大区块 */
.sites-region-block {
  margin-bottom: 28px;
}
.sites-region-title {
  font-size: 1.05rem;
  color: var(--text, #4a4a4a);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--bg, #f0ede8);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sites-region-title .region-count {
  font-size: 0.8rem;
  color: #999;
  font-weight: 400;
  background: var(--bg, #f0ede8);
  padding: 1px 10px;
  border-radius: 10px;
}

/* 链接卡片网格 */
.sites-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.site-link-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
}
.site-link-card:hover {
  border-color: var(--primary, #6b8caa);
  box-shadow: 0 2px 8px rgba(107, 140, 170, 0.12);
  transform: translateY(-1px);
}
.site-link-card.current {
  border-color: var(--accent, #c4a87a);
  background: rgba(196, 168, 122, 0.06);
}
.site-link-card .slc-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text, #4a4a4a);
}
.site-link-card .slc-domain {
  font-size: 0.75rem;
  color: #aaa;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.site-link-card.current .slc-name {
  color: var(--accent, #c4a87a);
}

/* 响应式 */
@media (max-width: 768px) {
  .sites-link-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 8px;
  }
  .site-link-card {
    padding: 10px 12px;
  }
  .sites-main-banner a {
    flex-wrap: wrap;
    justify-content: center;
    padding: 12px 20px;
  }
}
@media (max-width: 480px) {
  .sites-link-grid {
    grid-template-columns: 1fr 1fr;
  }
  .sites-tab {
    padding: 8px 16px;
    font-size: 0.82rem;
  }
}