/* ============================================
   DevCore — 文章详情页独有样式
   detail.html 专用：文章头部 / 正文排版 / 代码块 / 表格 / 引用 / TOC目录 / 相关文章
   ============================================ */

/* ============================
   阅读进度条
============================ */
.progress-bar {
  position: fixed;
  top: 64px; left: 0;
  height: 2px;
  background: var(--gradient-main);
  z-index: 99;
  transition: width 0.1s linear;
  width: 0%;
}

/* ============================
   主布局
============================ */
.main-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  position: relative;
  z-index: 1;
}

/* ============================
   文章主体
============================ */
.article-wrap { padding-top: 40px; min-width: 0; }

/* 文章头部 */
.article-header { margin-bottom: 32px; }

.article-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }

.article-title {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
  word-break: break-word;
  overflow-wrap: break-word;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.author-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.author-avatar-sm {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.author-name-sm { font-size: 14px; font-weight: 600; }
.author-date { font-size: 12px; color: var(--text-muted); margin-top: 1px; }

.meta-divider {
  width: 1px; height: 30px;
  background: var(--border-color);
}

.meta-stats { display: flex; align-items: center; gap: 16px; }

.meta-stat {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

.article-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.action-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 14px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
}

.action-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0,212,255,0.06);
}

.action-btn.liked {
  border-color: #ff6b9d;
  color: #ff6b9d;
  background: rgba(255,107,157,0.08);
}

/* ============================
   文章目录 (浮动)
============================ */
.toc-float {
  position: fixed;
  left: max(24px, calc((100vw - 1280px) / 2 - 200px));
  top: 50%;
  transform: translateY(-50%);
  width: 180px;
  z-index: 50;
}

.toc-float-inner {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 14px;
}

.toc-float-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
}

.toc-item {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all 0.2s;
  line-height: 1.5;
}

.toc-item:hover, .toc-item.active {
  color: var(--accent-cyan);
  border-left-color: var(--accent-cyan);
  background: rgba(0,212,255,0.05);
}

.toc-item.level2 { padding-left: 18px; font-size: 11px; }

/* ============================
   文章正文
============================ */
.article-body {
  max-width: var(--content-width);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 44px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h2::before {
  content: '#';
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 18px;
}

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 32px 0 12px;
}

.article-body h3::before {
  content: '## ';
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-size: 14px;
}

.article-body p { margin-bottom: 18px; }

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-body em { color: var(--accent-cyan); font-style: normal; }

/* 代码块 */
.code-block,
.article-body pre {
  background: #0d1117;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  margin: 24px 0;
  overflow: hidden;
}

.article-body pre {
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.9;
  color: #c9d1d9;
  white-space: pre-wrap;
  word-break: break-word;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.code-lang {
  font-size: 12px;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-weight: 600;
}

.code-file {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.copy-btn {
  font-size: 12px;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  padding: 3px 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover { color: var(--accent-cyan); border-color: var(--accent-cyan); }

.code-content {
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.9;
  color: #c9d1d9;
}

.code-content .kw { color: #ff79c6; }
.code-content .fn { color: #50fa7b; }
.code-content .str { color: #f1fa8c; }
.code-content .cm { color: #6272a4; font-style: italic; }
.code-content .num { color: #bd93f9; }
.code-content .var { color: #8be9fd; }
.code-content .type { color: #ffb86c; }
.code-content .key { color: #ff79c6; }
.code-content .op { color: #ff79c6; }

/* 行内代码 */
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 6px;
  padding: 3px 8px;
  color: var(--accent-cyan);
  font-weight: 500;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.1);
  display: inline-block;
  line-height: 1.5;
}

/* 引用块 */
.article-body blockquote {
  border-left: 3px solid var(--accent-cyan);
  background: rgba(0,212,255,0.04);
  padding: 14px 18px;
  margin: 20px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* 提示框 */
.tip-box {
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 24px 0;
  border-left: 4px solid;
  display: flex;
  gap: 12px;
}

.tip-box.info {
  background: rgba(0,212,255,0.05);
  border-color: var(--accent-cyan);
}

.tip-box.warning {
  background: rgba(255,140,0,0.05);
  border-color: #ffb347;
}

.tip-box.success {
  background: rgba(0,255,136,0.05);
  border-color: var(--accent-green);
}

.tip-icon { font-size: 18px; flex-shrink: 0; padding-top: 1px; }

.tip-content { flex: 1; }

.tip-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.tip-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 列表 */
.article-body ul, .article-body ol {
  padding-left: 20px;
  margin: 16px 0;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-body ul li::marker { color: var(--accent-cyan); }
.article-body ol li::marker { color: var(--accent-cyan); font-family: var(--font-mono); }

/* 表格 */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-body th {
  background: rgba(0,212,255,0.08);
  color: var(--text-primary);
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--border-color);
}

.article-body td {
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,0.06);
  color: var(--text-secondary);
}

.article-body tr:hover td { background: rgba(255,255,255,0.02); }

/* 架构图 */
.arch-diagram {
  background: #0d1117;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 24px;
  margin: 24px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 2;
  overflow-x: auto;
}

.arch-diagram .arch-title {
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.arch-diagram .box { color: #f8f8f2; }
.arch-diagram .arrow { color: var(--accent-blue); }
.arch-diagram .comment { color: #6272a4; }

/* ============================
   文章底部
============================ */
.article-footer { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border-color); }

.tags-section {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.tags-label { font-size: 13px; color: var(--text-muted); }

/* 点赞操作 */
.like-section {
  text-align: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 32px;
}

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border: 2px solid var(--border-color);
  border-radius: 40px;
  font-size: 15px;
  cursor: pointer;
  background: transparent;
  color: var(--text-secondary);
  transition: all 0.3s;
}

.like-btn:hover {
  border-color: #ff6b9d;
  color: #ff6b9d;
  background: rgba(255,107,157,0.08);
  transform: scale(1.05);
}

.like-btn.liked {
  border-color: #ff6b9d;
  color: #ff6b9d;
  background: rgba(255,107,157,0.1);
}

.like-count { font-size: 13px; color: var(--text-muted); margin-top: 8px; }

/* 版权声明 */
.copyright-notice {
  background: rgba(0,212,255,0.04);
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 32px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.8;
}

.copyright-notice strong { color: var(--text-secondary); }

/* 上下篇导航 */
.prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.prev-next-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all 0.25s;
}

.prev-next-item:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.prev-next-dir {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--font-mono);
  margin-bottom: 6px;
}

.prev-next-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.4;
  transition: color 0.2s;
}

.prev-next-item:hover .prev-next-title { color: var(--accent-cyan); }

/* ============================
   评论区
============================ */
.comments-section { }

.comments-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.comments-title {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.comments-title::before {
  content: '';
  width: 4px; height: 20px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.comment-count {
  font-size: 13px;
  background: rgba(0,212,255,0.1);
  color: var(--accent-cyan);
  padding: 2px 10px;
  border-radius: 20px;
  font-family: var(--font-mono);
}

/* 评论输入框 */
.comment-input-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 28px;
  display: flex;
  gap: 12px;
}

.comment-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--gradient-main);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}

.comment-input-right { flex: 1; }

.comment-textarea {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 14px;
  resize: none;
  min-height: 80px;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
}

.comment-textarea:focus { border-color: var(--accent-cyan); }
.comment-textarea::placeholder { color: var(--text-muted); }

.comment-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
}

.btn-comment {
  padding: 7px 20px;
  background: var(--gradient-main);
  border: none;
  border-radius: 20px;
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-comment:hover { opacity: 0.85; }

/* 评论列表 */
.comment-list { display: flex; flex-direction: column; gap: 20px; }

.comment-item {
  display: flex;
  gap: 12px;
}

.comment-body { flex: 1; }

.comment-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.comment-author {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.comment-date { font-size: 12px; color: var(--text-muted); }

.comment-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.comment-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 8px;
}

.comment-action {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s;
}

.comment-action:hover { color: var(--accent-cyan); }

.comment-reply {
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-top: 12px;
}

/* ============================
   侧边栏
============================ */
.sidebar { padding-top: 40px; min-width: 0; }

.sidebar-sticky {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 目录 */
.toc-list { padding: 12px; }

.toc-link {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all 0.2s;
  line-height: 1.4;
}

.toc-link:hover, .toc-link.active {
  color: var(--accent-cyan);
  border-left-color: var(--accent-cyan);
  background: rgba(0,212,255,0.05);
}

.toc-link.l2 { padding-left: 20px; font-size: 12px; }

/* 相关文章 */
.related-list { padding: 12px; }

.related-item {
  display: flex;
  gap: 10px;
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.related-item:hover { background: rgba(255,255,255,0.04); }

.related-num {
  font-size: 18px; line-height: 1; flex-shrink: 0; padding-top: 2px;
}

.related-title {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.related-item:hover .related-title { color: var(--accent-cyan); }

.related-meta { font-size: 11px; color: var(--text-muted); margin-top: 3px; }

/* ============================
   详情页响应式补充
============================ */
@media (max-width: 1200px) {
  .toc-float { display: none; }
}

@media (max-width: 1024px) {
  .main-container { grid-template-columns: 1fr; }
  .prev-next { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .article-meta-bar { flex-wrap: wrap; gap: 12px; }
  .article-actions { margin-left: 0; }
  .meta-divider { display: none; }
  .nav-links { display: none; }
  .article-body { font-size: 15px; }
}

/* ============================
   文章主体容器
============================ */
.article-main { min-width: 0; }

/* ============================
   文章头部
============================ */
.article-header { margin-bottom: 32px; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }

h1.article-title {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text-primary);
  word-break: break-word;
  overflow-wrap: break-word;
}

/* 文章元信息栏 */
.article-info-bar {
  display: flex; align-items: center; flex-wrap: wrap; gap: 20px;
  padding: 18px 22px; background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 32px;
}

.author-avatar-small {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0; border: 2px solid rgba(0,212,255,0.2);
}

.author-info { flex-shrink: 0; }
.author-name { font-weight: 700; font-size: 15px; }
.publish-date { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.info-stats {
  display: flex; align-items: center; gap: 16px;
  margin-left: auto; font-size: 13px; color: var(--text-muted); flex-wrap: wrap;
}
.stat-item { display: flex; align-items: center; gap: 4px; }

.action-buttons { display: flex; gap: 8px; margin-left: 12px; }

.btn-action {
  padding: 6px 14px; border-radius: 20px; font-size: 12px;
  border: 1px solid var(--border-color); background: transparent;
  color: var(--text-secondary); cursor: pointer; transition: all 0.2s;
  display: flex; align-items: center; gap: 4px;
}
.btn-action:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.btn-action.primary { background: var(--gradient-main); border: none; color: white; }
.btn-action.primary:hover { opacity: 0.85; }

/* ============================
   文章正文排版
============================ */
.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-primary);
}

.article-body p { margin-bottom: 20px; }
.article-body strong { color: var(--text-primary); font-weight: 600; }
.article-body em { color: var(--accent-cyan); font-style: normal; }

/* 正文标题 */
.article-body h2 {
  font-size: 24px; font-weight: 700; margin: 48px 0 20px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  display: flex; align-items: center; gap: 10px;
}
.article-body h2::before {
  content: ''; width: 4px; height: 24px; background: var(--gradient-main); border-radius: 2px;
}

.article-body h3 {
  font-size: 19px; font-weight: 600; margin: 36px 0 14px; color: var(--accent-cyan);
}

/* 列表 */
.article-body ul,
.article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body li { margin-bottom: 8px; color: var(--text-secondary); }

/* ============================
   代码块（详情页专用）
============================ */
.code-block {
  background: #0d1117;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 24px 0;
}

.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px; background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border-color);
  font-size: 12px; color: var(--text-muted);
}
.code-lang { font-family: var(--font-mono); color: var(--accent-green); font-weight: 600; }
.code-copy-btn {
  padding: 2px 10px; border-radius: 4px; background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color); color: var(--text-muted);
  cursor: pointer; font-size: 11px; transition: all 0.2s;
}
.code-copy-btn:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

pre {
  padding: 20px 24px; overflow-x: auto; font-size: 13px; line-height: 1.7;
  font-family: 'Fira Code', 'Cascadia Code', var(--font-mono), monospace;
  tab-size: 2;
}
pre code { color: var(--text-secondary); }
pre code .kw { color: #569cd6; }        /* keyword */
pre code .fn { color: #dcdcaa; }        /* function */
pre code .str { color: #ce9178; }       /* string */
pre code .num { color: #b5cea8; }       /* number */
pre code .cm { color: #6a9955; }        /* comment */
pre code .op { color: #d4d4d4; }        /* operator */
pre code .var { color: #9cdcfe; }       /* variable */
pre code .type { color: #4ec9b0; }      /* type */

/* 行内代码 */
code:not(pre code) {
  padding: 2px 7px; border-radius: 4px;
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan); font-family: var(--font-mono); font-size: 0.9em;
}

/* ============================
   引用块
============================ */
blockquote {
  margin: 24px 0; padding: 16px 20px;
  border-left: 4px solid var(--accent-cyan);
  background: rgba(0, 212, 255, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
blockquote p { margin-bottom: 0; }

/* ============================
   信息卡片
============================ */
.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px 24px; margin: 24px 0;
}
.info-card-title {
  font-size: 15px; font-weight: 700; margin-bottom: 12px;
  display: flex; align-items: center; gap: 8px;
}
.info-card ul { padding-left: 18px; margin: 0; }
.info-card li { font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; }

/* ============================
   提示框 (Callout)
============================ */
.callout {
  padding: 16px 20px; border-radius: var(--radius); margin: 24px 0; font-size: 14px;
  display: flex; gap: 12px; align-items: flex-start;
}
.callout-tip { background: rgba(0,255,136,0.06); border: 1px solid rgba(0,255,136,0.2); color: #00e676; }
.callout-warn { background: rgba(255,176,0,0.08); border: 1px solid rgba(255,176,0,0.2); color: #ffb347; }
.callout-error { background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2); color: #ef4444; }
.callout-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.callout-text { flex: 1; line-height: 1.7; }

/* ============================
   图片占位
============================ */
.figure {
  margin: 28px 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border-color);
}

.figure-placeholder {
  width: 100%; aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0f1629, #1a2645);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
  color: var(--text-muted); font-size: 13px;
}

.fig-caption {
  text-align: center; font-size: 13px; color: var(--text-muted);
  padding: 10px; background: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

/* ============================
   表格
============================ */
table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
  font-size: 14px;
}
th, td {
  padding: 12px 16px; text-align: left;
  border: 1px solid var(--border-color);
}
th {
  background: rgba(0, 212, 255, 0.06);
  color: var(--accent-cyan); font-weight: 600; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
td { color: var(--text-secondary); }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ============================
   目录导航 (TOC) — 粘性侧边栏
============================ */
.toc-card {
  position: sticky; top: 80px;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); overflow: hidden;
}
.toc-header {
  padding: 14px 18px; border-bottom: 1px solid var(--border-color);
  font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 8px;
}
.toc-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gradient-main); }
.toc-list { padding: 12px 0; max-height: calc(100vh - 160px); overflow-y: auto; }
.toc-list::-webkit-scrollbar { width: 4px; }
.toc-list::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.2); border-radius: 2px; }

.toc-item {
  display: block; padding: 7px 18px; padding-left: 30px;
  font-size: 13px; color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all 0.2s;
}
.toc-item:hover { color: var(--accent-cyan); background: rgba(0,212,255,0.04); border-left-color: var(--accent-cyan); }
.toc-item.active { color: var(--accent-cyan); background: rgba(0,212,255,0.06); border-left-color: var(--accent-cyan); font-weight: 600; }
.toc-sub { padding-left: 42px; font-size: 12px; }

/* ============================
   文章底部区域
============================ */
.article-footer {
  margin-top: 48px; padding-top: 28px;
  border-top: 1px solid var(--border-color);
}

/* 底部标签 */
.footer-tags { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.footer-tags-label { font-size: 13px; color: var(--text-muted); margin-right: 4px; }

.ftag {
  padding: 4px 12px; border-radius: 20px; font-size: 12px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--border-color);
  color: var(--text-secondary); cursor: pointer; transition: all 0.2s;
}
.ftag:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

/* 上下篇导航 */
.prev-next-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin-bottom: 32px;
}
.pn-card {
  padding: 18px 22px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); cursor: pointer; transition: all 0.25s; min-height: 80px;
  display: flex; flex-direction: column; justify-content: center;
}
.pn-card:hover { border-color: var(--border-glow); box-shadow: var(--shadow-glow); transform: translateY(-2px); }
.pn-label { font-size: 11px; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 1px; }
.pn-title { font-size: 14px; font-weight: 600; color: var(--text-secondary); transition: color 0.2s; line-height: 1.5; }
.pn-card:hover .pn-title { color: var(--accent-cyan); }

/* 相关文章推荐 */
.related-section { margin-top: 36px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.related-card {
  padding: 18px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); cursor: pointer; transition: all 0.25s;
}
.related-card:hover { border-color: var(--border-glow); transform: translateY(-2px); }
.related-tag {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  font-family: var(--font-mono); margin-bottom: 8px; display: inline-block;
}
.related-title { font-size: 14px; font-weight: 500; line-height: 1.5; color: var(--text-secondary); transition: color 0.2s; }
.related-card:hover .related-title { color: var(--accent-cyan); }
.related-meta { font-size: 11px; color: var(--text-muted); margin-top: 8px; }

/* ============================
   详情页侧边栏补充组件
============================ */

/* 作者信息大卡片 */
.author-box { padding: 20px; text-align: center; }
.author-avatar-lg {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--gradient-main); display: flex; align-items: center; justify-content: center;
  font-size: 32px; margin: 0 auto 12px; border: 3px solid rgba(0,212,255,0.25);
}
.follow-btn {
  width: 100%; padding: 8px; border-radius: 20px;
  background: var(--gradient-main); border: none; color: white;
  font-size: 13px; font-weight: 600; cursor: pointer; transition: opacity 0.2s;
}
.follow-btn:hover { opacity: 0.85; }

/* 推荐阅读迷你列表 */
.rec-list { padding: 10px; }
.rec-item {
  display: flex; gap: 10px; padding: 10px; border-radius: var(--radius-sm);
  cursor: pointer; transition: all 0.2s;
}
.rec-item:hover { background: rgba(255,255,255,0.04); }
.rec-num { width: 20px; font-size: 13px; font-weight: 700; color: var(--accent-cyan); flex-shrink: 0; font-family: var(--font-mono); }
.rec-title { font-size: 13px; line-height: 1.5; color: var(--text-secondary); transition: color 0.2s; }
.rec-item:hover .rec-title { color: var(--text-primary); }

/* ============================
   详情页响应式补充
============================ */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  /* 公共样式已处理 article-wrapper */
}

@media (max-width: 768px) {
  h1.article-title { font-size: 24px; }
  .article-info-bar { flex-direction: column; align-items: flex-start; }
  .info-stats { margin-left: 0; }
  .prev-next-nav { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}