/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #2c3e50;
  --color-text-light: #6b7280;
  --color-text-lighter: #9ca3af;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --color-danger: #ef4444;
  --color-success: #10b981;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
  --max-width: 1100px;
  --sidebar-width: 280px;
  --header-height: 60px;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* ========== Header ========== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.5px;
}
.site-logo:hover { text-decoration: none; color: var(--color-primary); }

.site-nav { display: flex; gap: 4px; }
.site-nav .nav-link {
  padding: 6px 14px;
  border-radius: var(--radius);
  color: var(--color-text-light);
  font-size: 0.9rem;
  transition: all 0.2s;
}
.site-nav .nav-link:hover,
.site-nav .nav-link.active {
  background: #f3f4f6;
  color: var(--color-text);
  text-decoration: none;
}
.header-actions { display: flex; gap: 8px; align-items: center; }
.search-toggle, .menu-toggle {
  background: none;
  border: 1px solid var(--color-border);
  padding: 6px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.1rem;
}
.menu-toggle { display: none; }

.search-box { display: none; padding: 0 20px 16px; max-width: var(--max-width); margin: 0 auto; }
.search-box.show { display: block; }
.search-form { display: flex; gap: 8px; }
.search-input { flex: 1; padding: 10px 14px; border: 2px solid var(--color-border); border-radius: var(--radius); font-size: 1rem; outline: none; }
.search-input:focus { border-color: var(--color-primary); }
.search-btn { padding: 10px 20px; background: var(--color-primary); color: white; border: none; border-radius: var(--radius); cursor: pointer; font-size: 0.95rem; }

/* ========== Main Layout ========== */
.main-container { max-width: var(--max-width); margin: 0 auto; padding: 32px 20px; }
.content-wrapper { display: flex; gap: 40px; }
.content-main { flex: 1; min-width: 0; }

/* ========== Sidebar ========== */
.sidebar { width: var(--sidebar-width); flex-shrink: 0; }
.sidebar-widget {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.widget-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-lighter);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.category-list { list-style: none; }
.category-list li { margin-bottom: 6px; }
.category-list a {
  display: flex; justify-content: space-between;
  color: var(--color-text); padding: 6px 8px;
  border-radius: 4px; font-size: 0.9rem;
}
.category-list a:hover { background: #f3f4f6; text-decoration: none; }
.category-list .count, .tag-item .count { color: var(--color-text-lighter); font-size: 0.8rem; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-item {
  padding: 4px 10px; background: #f3f4f6;
  border-radius: 20px; font-size: 0.85rem;
  color: var(--color-text-light);
}
.tag-item:hover { background: var(--color-primary); color: white; text-decoration: none; }
.tag-item:hover .count { color: rgba(255,255,255,0.7); }

.widget-about { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.6; }

/* ========== Page Header ========== */
.page-header { margin-bottom: 32px; }
.page-header h1 { font-size: 2rem; font-weight: 700; }

/* ========== Article Card ========== */
.article-card {
 position: relative;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  overflow: visible;
  transition: box-shadow 0.2s;
}
.article-card:hover { box-shadow: var(--shadow-lg); }
.article-cover img {
  width: 100%; height: 220px; object-fit: cover;
}
.article-card-body { padding: 24px; }
.article-card-title { font-size: 1.3rem; margin-bottom: 10px; line-height: 1.4; }
.article-card-title a { color: var(--color-text); }
.article-card-title a:hover { color: var(--color-primary); text-decoration: none; }
.article-card-meta {
  display: flex; flex-wrap: wrap; gap: 16px;
  font-size: 0.8rem; color: var(--color-text-lighter); margin-bottom: 12px;
}
.article-card-meta a { color: var(--color-text-lighter); }
.article-card-summary { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }
.read-more { font-size: 0.85rem; font-weight: 600; margin-top: 8px; display: inline-block; }

/* ========== Article Detail ========== */
.article-detail {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
}
.article-header { margin-bottom: 32px; }
.article-title { font-size: 2rem; font-weight: 700; line-height: 1.3; margin-bottom: 12px; }
.article-meta { display: flex; gap: 16px; font-size: 0.85rem; color: var(--color-text-lighter); flex-wrap: wrap; }
.article-meta a { color: var(--color-text-lighter); }
.article-tags { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.tag-badge {
  padding: 3px 10px; background: #eff6ff; color: var(--color-primary);
  border-radius: 20px; font-size: 0.8rem;
}
.tag-badge:hover { background: var(--color-primary); color: white; text-decoration: none; }
.article-cover-full { margin-bottom: 32px; border-radius: var(--radius); overflow: hidden; }
.article-cover-full img { width: 100%; max-height: 400px; object-fit: cover; }

/* Markdown Content */
.markdown-body { font-size: 1.05rem; line-height: 1.8; }
.markdown-body h1 { font-size: 1.8rem; margin: 32px 0 16px; }
.markdown-body h2 { font-size: 1.5rem; margin: 28px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--color-border); }
.markdown-body h3 { font-size: 1.2rem; margin: 24px 0 10px; }
.markdown-body p { margin-bottom: 16px; }
.markdown-body ul, .markdown-body ol { margin: 12px 0 12px 24px; }
.markdown-body li { margin-bottom: 6px; }
.markdown-body code {
  background: #f1f5f9; padding: 2px 6px; border-radius: 4px;
  font-family: 'Fira Code', Consolas, 'Courier New', monospace; font-size: 0.9em;
}
.markdown-body pre {
  background: #1e293b; color: #e2e8f0; padding: 20px;
  border-radius: var(--radius); overflow-x: auto; margin: 16px 0;
}
.markdown-body pre code { background: none; padding: 0; color: inherit; }
.markdown-body blockquote {
  border-left: 4px solid var(--color-primary); padding: 8px 16px;
  margin: 16px 0; background: #f8fafc; color: var(--color-text-light);
}
.markdown-body img { border-radius: var(--radius); margin: 12px 0; }
.markdown-body a { border-bottom: 1px solid transparent; }
.markdown-body a:hover { border-bottom-color: var(--color-primary); }
.markdown-body table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.markdown-body th, .markdown-body td { border: 1px solid var(--color-border); padding: 10px 14px; text-align: left; }
.markdown-body th { background: #f8fafc; font-weight: 600; }

.article-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--color-border); }
.article-nav { display: flex; justify-content: space-between; gap: 16px; }
.article-nav-link { max-width: 45%; font-size: 0.9rem; color: var(--color-text-light); }
.article-nav-link:hover { color: var(--color-primary); }

/* ========== Category Grid ========== */
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.category-card {
  background: var(--color-surface); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow); text-align: center;
  transition: all 0.2s;
}
.category-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); text-decoration: none; }
.category-card h3 { color: var(--color-text); margin-bottom: 8px; }
.category-card .count { color: var(--color-text-lighter); font-size: 0.85rem; }

/* ========== Tag Cloud Large ========== */
.tag-cloud-large { display: flex; flex-wrap: wrap; gap: 12px; padding: 20px; }
.tag-cloud-item {
  padding: 6px 16px; background: #f3f4f6;
  border-radius: 24px; color: var(--color-text);
  transition: all 0.2s;
}
.tag-cloud-item:hover { background: var(--color-primary); color: white; text-decoration: none; }

/* ========== Archive ========== */
.archive-year { margin-bottom: 32px; }
.archive-year-title { font-size: 1.4rem; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 2px solid var(--color-text); }
.archive-month-title { font-size: 1rem; color: var(--color-text-light); margin: 12px 0 8px; }
.archive-list { list-style: none; }
.archive-list li {
  padding: 8px 0; border-bottom: 1px dashed var(--color-border);
  display: flex; align-items: center; gap: 16px;
}
.archive-date { color: var(--color-text-lighter); font-size: 0.85rem; min-width: 50px; }
.archive-list a { flex: 1; }

/* ========== Photo Grid ========== */
.album-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filter-btn {
  padding: 6px 16px; border-radius: 20px; background: #f3f4f6;
  color: var(--color-text-light); font-size: 0.85rem; border: none; cursor: pointer;
}
.filter-btn.active, .filter-btn:hover { background: var(--color-primary); color: white; text-decoration: none; }

.photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.photo-card {
  background: var(--color-surface); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; cursor: pointer;
  transition: all 0.2s;
}
.photo-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.photo-thumb { aspect-ratio: 4/3; overflow: hidden; }
.photo-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.photo-card:hover .photo-thumb img { transform: scale(1.05); }
.photo-info { padding: 12px; }
.photo-title { font-size: 0.9rem; margin-bottom: 4px; }
.photo-date, .photo-album { font-size: 0.75rem; color: var(--color-text-lighter); display: block; }

/* Lightbox */
.lightbox {
  display: none; position: fixed; top: 0; left: 0;
  width: 100%; height: 100%; background: rgba(0,0,0,0.9);
  z-index: 1000; justify-content: center; align-items: center; flex-direction: column;
}
.lightbox.show { display: flex; }
.lightbox-content { max-width: 90%; max-height: 80vh; object-fit: contain; border-radius: 4px; }
.lightbox-close { position: absolute; top: 20px; right: 30px; color: white; font-size: 2rem; cursor: pointer; z-index: 1001; }
.lightbox-caption { color: white; margin-top: 16px; font-size: 0.9rem; text-align: center; max-width: 80%; }

/* ========== About ========== */
.about-content { background: var(--color-surface); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }

/* ========== Pagination ========== */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 32px; flex-wrap: wrap; }
.page-link {
  padding: 8px 14px; border: 1px solid var(--color-border);
  border-radius: var(--radius); color: var(--color-text-light);
  font-size: 0.85rem; transition: all 0.2s;
}
.page-link:hover { background: #f3f4f6; text-decoration: none; }
.page-link.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.page-dots { padding: 8px 6px; color: var(--color-text-lighter); }

/* ========== Footer ========== */
.site-footer { text-align: center; padding: 32px 20px; color: var(--color-text-lighter); font-size: 0.85rem; border-top: 1px solid var(--color-border); margin-top: 40px; }

/* ========== Error Pages ========== */
.error-page { text-align: center; padding: 80px 20px; }
.error-page h1 { font-size: 5rem; color: var(--color-text-lighter); margin-bottom: 16px; }
.error-page p { font-size: 1.1rem; color: var(--color-text-light); margin-bottom: 24px; }

/* ========== Empty State ========== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-lighter); font-size: 1.05rem; }
.empty-state a { color: var(--color-primary); }

/* ========== Buttons ========== */
.btn { display: inline-block; padding: 10px 20px; border-radius: var(--radius); font-size: 0.9rem; font-weight: 600; cursor: pointer; border: none; transition: all 0.2s; text-align: center; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-outline { background: transparent; border: 1px solid var(--color-border); color: var(--color-text); }
.btn-outline:hover { background: #f3f4f6; }
.btn-danger { background: var(--color-danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* ========== Admin ========== */
.admin-body { background: #f1f5f9; }
.admin-wrapper { display: flex; min-height: 100vh; }

.admin-sidebar {
  width: 240px; background: #1e293b; color: #e2e8f0;
  padding: 0; position: fixed; top: 0; left: 0; bottom: 0;
  overflow-y: auto; z-index: 200;
}
.admin-brand { padding: 20px; border-bottom: 1px solid #334155; }
.admin-brand a { color: white; font-size: 1.1rem; font-weight: 600; }
.admin-brand a:hover { text-decoration: none; }
.admin-nav { padding: 12px 0; }
.admin-nav hr { border: none; border-top: 1px solid #334155; margin: 8px 16px; }
.admin-nav-link {
  display: block; padding: 10px 20px; color: #94a3b8;
  font-size: 0.9rem; transition: all 0.2s;
}
.admin-nav-link:hover { background: #334155; color: white; text-decoration: none; }
.admin-nav-link.active { background: #334155; color: white; border-left: 3px solid var(--color-primary); }

.admin-main { margin-left: 240px; flex: 1; min-height: 100vh; }
.admin-topbar {
  background: white; padding: 16px 24px; border-bottom: 1px solid var(--color-border);
  display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0; z-index: 50;
}
.admin-topbar h2 { font-size: 1.2rem; }
.admin-topbar-right { display: flex; gap: 12px; align-items: center; }
.admin-user { font-size: 0.9rem; color: var(--color-text-light); }

.admin-content { padding: 24px; }
.admin-page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.admin-page-header h3 { font-size: 1.3rem; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card {
  background: white; border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow); text-align: center;
}
.stat-icon { font-size: 2rem; margin-bottom: 8px; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-label { font-size: 0.8rem; color: var(--color-text-lighter); margin-top: 4px; }

/* Admin Table */
.admin-table { width: 100%; background: white; border-radius: var(--radius); box-shadow: var(--shadow); border-collapse: collapse; }
.admin-table th {
  background: #f8fafc; padding: 12px 16px; text-align: left;
  font-size: 0.8rem; text-transform: uppercase; color: var(--color-text-lighter);
  border-bottom: 2px solid var(--color-border);
}
.admin-table td { padding: 12px 16px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
.admin-table tr:hover td { background: #fafbfc; }
.table-actions { white-space: nowrap; display: flex; gap: 6px; }
.table-thumb { width: 60px; height: 45px; object-fit: cover; border-radius: 4px; }

/* Admin Forms */
.admin-form { background: white; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); max-width: 900px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.85rem; font-weight: 600; color: var(--color-text); }
.form-input, .form-input[type="text"], .form-input[type="password"], .form-input[type="date"], .form-input[type="file"], .form-input[type="url"], .form-input[type="number"], .form-input select, .form-input textarea {
  width: 100%; padding: 10px 14px; border: 1px solid var(--color-border);
  border-radius: var(--radius); font-size: 0.95rem; outline: none;
  font-family: inherit; background: white;
}
.form-input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-row { display: flex; gap: 16px; }
.form-group-half { flex: 1; }
.form-row-inline { display: flex; gap: 8px; align-items: flex-end; }
.form-actions { margin-top: 24px; display: flex; gap: 12px; }

/* Editor */
.editor-wrapper { position: relative; }
.editor-textarea {
  font-family: 'Fira Code', Consolas, 'Courier New', monospace;
  font-size: 0.9rem; line-height: 1.6;
  min-height: 400px; resize: vertical;
}
.editor-preview {
  display: none; background: white; padding: 20px;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  min-height: 400px; overflow-y: auto;
}
.editor-split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.editor-split .editor-textarea { grid-column: 1; min-height: 400px; }
.editor-split .editor-preview { grid-column: 2; display: block; }
.editor-tabs { margin-top: 8px; display: flex; gap: 8px; }

/* Cover Input */
.cover-input-row { display: flex; gap: 8px; }
.cover-preview { margin-top: 8px; }
.cover-preview img { max-width: 300px; max-height: 150px; object-fit: cover; border-radius: var(--radius); }

/* Alerts */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; }
.alert-error { background: #fef2f2; color: var(--color-danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: var(--color-success); border: 1px solid #bbf7d0; }

/* Login Page */
.login-page { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #f1f5f9; padding: 20px; }
.login-card { background: white; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-lg); width: 100%; max-width: 400px; }
.login-title { text-align: center; margin-bottom: 24px; font-size: 1.3rem; }
.login-footer { text-align: center; margin-top: 20px; font-size: 0.85rem; }

/* Admin Search */
.admin-search { margin-bottom: 20px; }
.search-form-inline { display: flex; gap: 8px; }
.search-form-inline .form-input { flex: 1; }

/* Photo Edit Preview */
.photo-edit-preview { text-align: center; margin-bottom: 20px; }
.photo-edit-preview p { margin-top: 8px; font-size: 0.85rem; color: var(--color-text-lighter); }

/* Category/Tag detail */
.category-detail-title, .tag-detail-title { margin-bottom: 20px; font-size: 1.2rem; }
.category-detail-title .count, .tag-detail-title .count { color: var(--color-text-lighter); font-weight: normal; }

/* Search results */
.search-result-count { color: var(--color-text-lighter); margin-bottom: 20px; }

/* Dashboard actions */
.dashboard-actions { display: flex; gap: 12px; }

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .content-wrapper { flex-direction: column; }
  .sidebar { width: 100%; }
  .admin-sidebar { width: 200px; }
  .admin-main { margin-left: 200px; }
}

@media (max-width: 768px) {
  .site-nav { display: none; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: white; padding: 12px; border-bottom: 1px solid var(--color-border); }
  .site-nav.open { display: flex; }
  .menu-toggle { display: block; }
  .article-detail { padding: 24px; }
  .article-title { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .admin-sidebar { width: 60px; overflow: hidden; }
  .admin-sidebar .admin-brand a { font-size: 0; }
  .admin-sidebar .admin-brand a::before { content: '⚙️'; font-size: 1.2rem; }
  .admin-sidebar .admin-nav-link { font-size: 0; padding: 12px; text-align: center; }
  .admin-sidebar .admin-nav-link::first-letter { font-size: 1rem; }
  .admin-main { margin-left: 60px; }
  .form-row { flex-direction: column; }
  .editor-split { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .photo-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .article-card-meta { flex-direction: row; flex-wrap: wrap; gap: 4px 12px; align-items: center; }
  .article-nav { flex-direction: column; }
  .article-nav-link { max-width: 100%; }
  .admin-page-header { flex-direction: column; gap: 12px; align-items: flex-start; }
}

/* Quill Editor */
#editor-container {
  min-height: 400px;
  font-size: 16px;
}
#editor-container .ql-editor {
  min-height: 400px;
  max-height: none;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
}
#editor-container .ql-toolbar {
  border-radius: 8px 8px 0 0;
  border-color: #e0e0e0;
  background: #fafafa;
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}
#editor-container .ql-container {
  border-radius: 0 0 8px 8px;
  border-color: #e0e0e0;
}
@media (max-width: 768px) {
  #editor-container .ql-toolbar .ql-formats { margin-right: 4px; }
  #editor-container .ql-toolbar button { padding: 2px 4px; }
}

/* Article Content Responsive */
.article-content {
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
}
.article-content img { max-width: 100%; height: auto; }
.article-content table { width: 100%; overflow-x: auto; display: block; }
.article-content pre { overflow-x: auto; white-space: pre-wrap; word-wrap: break-word; }
.article-content iframe { max-width: 100%; }
.article-content * { max-width: 100%; box-sizing: border-box; }
.ql-font-arial { font-family: Arial, sans-serif !important; }
.ql-font-times-new-roman { font-family: 'Times New Roman', Times, serif !important; }
.ql-font-georgia { font-family: Georgia, serif !important; }
.ql-font-verdana { font-family: Verdana, sans-serif !important; }
.ql-font-courier-new { font-family: 'Courier New', Courier, monospace !important; }

.preview-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.6); z-index: 9999; display: flex;
  align-items: flex-start; justify-content: center;
  overflow-y: auto; padding: 40px 20px;
}
.preview-container {
  background: #fff; border-radius: 12px; width: 100%; max-width: 860px;
  min-height: 400px; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.preview-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 24px; border-bottom: 1px solid #e0e0e0;
}
.preview-header h3 { margin: 0; font-size: 1.1rem; }
.preview-content { padding: 24px; }
.preview-title { font-size: 1.8rem; margin-bottom: 12px; line-height: 1.3; }
.preview-meta { color: #888; font-size: 0.9rem; margin-bottom: 20px; }
.preview-body { font-size: 16px; line-height: 1.8; word-wrap: break-word; overflow-wrap: break-word; }
.preview-body img { max-width: 100%; height: auto; }
.preview-body table { width: 100%; overflow-x: auto; display: block; }
.preview-body pre { overflow-x: auto; white-space: pre-wrap; word-wrap: break-word; }
.preview-body * { max-width: 100%; box-sizing: border-box; }
.btn-danger { color: #e53e3e; border-color: #e53e3e; }
.btn-danger:hover { background: #e53e3e; color: #fff !important; }

.ql-picker.ql-font .ql-picker-label::before { content: "字体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="songti"]::before { content: "宋体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="heiti"]::before { content: "黑体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="kaiti"]::before { content: "楷体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="weiruan-yahei"]::before { content: "微软雅黑" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="fangsong"]::before { content: "仿宋" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="youyuan"]::before { content: "幼圆" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="arial"]::before { content: "Arial" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="times-new-roman"]::before { content: "Times New Roman" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="georgia"]::before { content: "Georgia" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="verdana"]::before { content: "Verdana" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="courier-new"]::before { content: "Courier New" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="sans-serif"]::before { content: "Sans Serif" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="serif"]::before { content: "Serif" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before { content: "Monospace" !important; }
.ql-picker.ql-size .ql-picker-label::before { content: "字号" !important; }
.ql-picker.ql-size .ql-picker-item[data-value="small"]::before { content: "极小" !important; }
.ql-picker.ql-size .ql-picker-item[data-value="large"]::before { content: "大" !important; }
.ql-picker.ql-size .ql-picker-item[data-value="huge"]::before { content: "超大" !important; }
.ql-picker.ql-size .ql-picker-item:not([data-value="small"]):not([data-value="large"]):not([data-value="huge"])::before { content: "正常" !important; }

.btn, .btn-sm, .btn-primary, .btn-outline, .btn-danger, .btn-block {
  color: #1a1a1a !important;
}
.btn-primary { background: var(--color-primary); color: #fff !important; }
.btn-primary:hover { background: var(--color-primary-hover, #2b6cb0); color: #fff !important; }
.btn-outline:hover { color: #fff !important; }
.btn-danger:hover { color: #fff !important; }
.ql-font-songti { font-family: 'SimSun', '宋体', serif !important; }
.ql-font-heiti { font-family: 'SimHei', '黑体', sans-serif !important; }
.ql-font-kaiti { font-family: 'KaiTi', '楷体', serif !important; }
.ql-font-weiruan-yahei { font-family: 'Microsoft YaHei', '微软雅黑', sans-serif !important; }
.ql-font-fangsong { font-family: 'FangSong', '仿宋', serif !important; }
.ql-font-youyuan { font-family: 'YouYuan', '幼圆', sans-serif !important; }
.ql-font-arial { font-family: Arial, sans-serif !important; }
.ql-font-times-new-roman { font-family: 'Times New Roman', Times, serif !important; }
.ql-font-georgia { font-family: Georgia, serif !important; }
.ql-font-verdana { font-family: Verdana, sans-serif !important; }
.ql-font-courier-new { font-family: 'Courier New', Courier, monospace !important; }
.ql-font-sans-serif { font-family: sans-serif !important; }
.ql-font-serif { font-family: serif !important; }
.ql-font-monospace { font-family: monospace !important; }
.ql-picker.ql-font .ql-picker-label::before { content: "字体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="songti"]::before { content: "宋体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="heiti"]::before { content: "黑体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="kaiti"]::before { content: "楷体" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="weiruan-yahei"]::before { content: "微软雅黑" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="fangsong"]::before { content: "仿宋" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="youyuan"]::before { content: "幼圆" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="arial"]::before { content: "Arial" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="times-new-roman"]::before { content: "Times New Roman" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="georgia"]::before { content: "Georgia" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="verdana"]::before { content: "Verdana" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="courier-new"]::before { content: "Courier New" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="sans-serif"]::before { content: "无衬线" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="serif"]::before { content: "衬线" !important; }
.ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before { content: "等宽" !important; }
.ql-picker.ql-size .ql-picker-label::before { content: "字号" !important; }
.ql-picker.ql-size .ql-picker-item[data-value="small"]::before { content: "小" !important; }
.ql-picker.ql-size .ql-picker-item[data-value="large"]::before { content: "大" !important; }
.ql-picker.ql-size .ql-picker-item[data-value="huge"]::before { content: "超大" !important; }
.ql-picker.ql-size .ql-picker-item:not([data-value])::before { content: "正常" !important; }
.ql-editor { font-weight: normal !important; }
.ql-editor strong, .ql-editor b { font-weight: bold !important; }
/* ========== 公告板 ========== */
.announcement-board {
  background: #f8f9fa;
  border-left: 4px solid #4a90d9;
  border-radius: 6px;
  padding: 16px 20px;
  margin-bottom: 32px;
}
.announcement-label {
  font-size: 13px;
  font-weight: 600;
  color: #4a90d9;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.announcement-content {
  font-size: 14px;
  color: #333;
  line-height: 1.7;
}
.announcement-content p {
  margin: 0 0 8px 0;
}
.announcement-content p:last-child {
  margin-bottom: 0;
}

/* ========== 留言板 ========== */
.section-header {
  margin-bottom: 24px;
}
.section-header h1 {
  font-size: 22px;
  margin-bottom: 4px;
}
.section-desc {
  font-size: 13px;
  color: #999;
}

/* 留言表单 */
.message-form-wrap {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 32px;
}
.message-form .form-row {
  margin-bottom: 12px;
}
.message-form .form-row:last-child {
  margin-bottom: 0;
}
.input-name {
  width: 240px;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.input-name:focus {
  border-color: #4a90d9;
}
.char-hint {
  font-size: 12px;
  color: #999;
  margin-left: 12px;
}
.input-content {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.input-content:focus {
  border-color: #4a90d9;
}
.form-actions {
  text-align: right;
}
.btn-submit {
  background: #4a90d9;
  color: #fff;
  border: none;
  padding: 8px 24px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-submit:hover {
  background: #3a7bc8;
}

/* 留言列表 */
.message-list {
  margin-bottom: 32px;
}
.message-item {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
  position: relative;
  transition: box-shadow 0.2s;
}
.message-item:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.message-pinned {
  border-left: 3px solid #ff6b35;
  background: #fffcf8;
}
.pinned-badge {
  position: absolute;
  top: 12px;
  right: 16px;
  background: #ff6b35;
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
}
.floor-badge {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 0.75rem;
  color: #999;
  pointer-events: none;
}
.pinned-badge ~ .floor-badge {
  top: 36px;
}

.message-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 13px;
  color: #999;
}
.message-name {
  font-weight: 600;
  color: #333;
}
.message-ip {
  font-family: monospace;
  font-size: 12px;
  color: #bbb;
}
.message-time {
  color: #bbb;
}
.message-content {
  font-size: 14px;
  color: #333;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

/* 管理员表格中的留言列 */
.cell-content {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}
.cell-ip {
  font-family: monospace;
  font-size: 12px;
  color: #999;
}
.cell-time {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}
.cell-actions {
  white-space: nowrap;
}
.row-pinned {
  background: #fffcf8;
}
.badge-pinned {
  background: #fff3e0;
  color: #ff6b35;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 3px;
}
.badge-normal {
  background: #f0f0f0;
  color: #666;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 3px;
}

/* 内联表单 */
.inline-form {
  display: inline-block;
  margin-right: 6px;
}
.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-sm:hover {
  opacity: 0.85;
}
.btn-primary {
  background: #4a90d9;
  color: #fff;
}
.btn-warning {
  background: #ff9800;
  color: #fff;
}
.btn-danger {
  background: #e74c3c;
  color: #fff;
}
.btn-secondary {
  background: #f0f0f0;
  color: #666;
  border: 1px solid #ddd;
}

/* 表单提示 */
.form-hint {
  font-size: 12px;
  color: #999;
  margin-top: 6px;
}
/* ========== 公告板 ========== */
.announcement-board {
  background: #f8f9fa;
  border-left: 4px solid #4a90d9;
  border-radius: 6px;
  padding: 16px 20px;
  margin-bottom: 32px;
}
.announcement-label {
  font-size: 13px;
  font-weight: 600;
  color: #4a90d9;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.announcement-content {
  font-size: 14px;
  color: #333;
  line-height: 1.7;
}
.announcement-content p {
  margin: 0 0 8px 0;
}
.announcement-content p:last-child {
  margin-bottom: 0;
}

/* ========== 留言板 ========== */
.section-header {
  margin-bottom: 24px;
}
.section-header h1 {
  font-size: 22px;
  margin-bottom: 4px;
}
.section-desc {
  font-size: 13px;
  color: #999;
}

/* 留言表单 */
.message-form-wrap {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 32px;
}
.message-form .form-row {
  margin-bottom: 12px;
}
.message-form .form-row:last-child {
  margin-bottom: 0;
}
.input-name {
  width: 240px;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.input-name:focus {
  border-color: #4a90d9;
}
.char-hint {
  font-size: 12px;
  color: #999;
  margin-left: 12px;
}
.input-content {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.input-content:focus {
  border-color: #4a90d9;
}
.form-actions {
  text-align: right;
}
.btn-submit {
  background: #4a90d9;
  color: #fff;
  border: none;
  padding: 8px 24px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-submit:hover {
  background: #3a7bc8;
}

/* 留言列表 */
.message-list {
  margin-bottom: 32px;
}
.message-item {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
  position: relative;
  transition: box-shadow 0.2s;
}
.message-item:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.message-pinned {
  border-left: 3px solid #ff6b35;
  background: #fffcf8;
}
.pinned-badge {
  position: absolute;
  top: 12px;
  right: 16px;
  background: #ff6b35;
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
}
.floor-badge {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 0.75rem;
  color: #999;
  pointer-events: none;
}
.pinned-badge ~ .floor-badge {
  top: 36px;
}

.message-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 13px;
  color: #999;
}
.message-name {
  font-weight: 600;
  color: #333;
}
.message-ip {
  font-family: monospace;
  font-size: 12px;
  color: #bbb;
}
.message-time {
  color: #bbb;
}
.message-content {
  font-size: 14px;
  color: #333;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

/* 管理员表格中的留言列 */
.cell-content {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}
.cell-ip {
  font-family: monospace;
  font-size: 12px;
  color: #999;
}
.cell-time {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}
.cell-actions {
  white-space: nowrap;
}
.row-pinned {
  background: #fffcf8;
}
.badge-pinned {
  background: #fff3e0;
  color: #ff6b35;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 3px;
}
.badge-normal {
  background: #f0f0f0;
  color: #666;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 3px;
}

/* 内联表单 */
.inline-form {
  display: inline-block;
  margin-right: 6px;
}
.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-sm:hover {
  opacity: 0.85;
}
.btn-primary {
  background: #4a90d9;
  color: #fff;
}
.btn-warning {
  background: #ff9800;
  color: #fff;
}
.btn-danger {
  background: #e74c3c;
  color: #fff;
}
.btn-secondary {
  background: #f0f0f0;
  color: #666;
  border: 1px solid #ddd;
}

/* 表单提示 */
.form-hint {
  font-size: 12px;
  color: #999;
  margin-top: 6px;
}

/* 转载/原创 标签样式 */
.badge-original {
  display: inline-block;
  background: #e6f4f0;
  color: #3d8b7a;
  font-size: 12px;
  padding: 1px 8px;
  border-radius: 3px;
  margin-left: 4px;
  font-weight: 500;
  white-space: nowrap;
}
.badge-reprint {
  display: inline-block;
  background: #fdf3e0;
  color: #b8860b;
  font-size: 12px;
  padding: 1px 8px;
  border-radius: 3px;
  margin-left: 4px;
  font-weight: 500;
  white-space: nowrap;
}
.badge-original-sm {
  display: inline-block;
  background: #e6f4f0;
  color: #3d8b7a;
  font-size: 11px;
  padding: 0 6px;
  border-radius: 2px;
  margin-right: 6px;
  font-weight: 500;
  vertical-align: middle;
}
.badge-reprint-sm {
  display: inline-block;
  background: #fdf3e0;
  color: #b8860b;
  font-size: 11px;
  padding: 0 6px;
  border-radius: 2px;
  margin-right: 6px;
  font-weight: 500;
  vertical-align: middle;
}
/* 文章详情页转载出处区块 */
.article-source {
  margin: 30px 0 20px;
  padding: 16px 20px;
  background: #faf7f2;
  border-left: 3px solid #c4954a;
  border-radius: 4px;
  font-size: 14px;
  color: #6b5a3e;
}
.article-source h4 {
  margin: 0 0 8px;
  color: #8b6914;
  font-size: 15px;
}
.article-source p {
  margin: 4px 0;
  overflow-wrap: break-word;
  word-break: break-all;
}