/* 白皮书查看器样式 */

.wp-layout {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--nav-height) + 32px) 24px 60px;
  gap: 40px;
}

/* 目录侧边栏 */
.wp-toc {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  width: 220px;
  flex-shrink: 0;
  max-height: calc(100vh - var(--nav-height) - 48px);
  overflow-y: auto;
  padding: 16px 0;
}
.wp-toc-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  padding-left: 12px;
}
.wp-toc a {
  display: block;
  padding: 5px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all .2s;
}
.wp-toc a:hover, .wp-toc a.active {
  color: var(--text-primary);
  border-left-color: var(--accent-blue);
  opacity: 1;
}
.wp-toc a.toc-h3 { padding-left: 24px; font-size: 12px; }

/* 文章主体 — 浅色阅读区 */
.wp-article {
  flex: 1;
  min-width: 0;
  background: #ffffff;
  color: #1e293b;
  border-radius: var(--radius);
  padding: 48px 56px;
  box-shadow: var(--shadow-card);
  line-height: 1.8;
  font-size: 15px;
}

/* 标题 */
.wp-article h1 { font-size: 28px; font-weight: 800; margin: 0 0 8px; color: #0f172a; }
.wp-article h2 {
  font-size: 22px; font-weight: 700; margin: 40px 0 16px;
  padding-bottom: 8px; border-bottom: 2px solid #e2e8f0; color: #0f172a;
}
.wp-article h3 { font-size: 18px; font-weight: 600; margin: 28px 0 12px; color: #1e293b; }
.wp-article h4 { font-size: 15px; font-weight: 600; margin: 20px 0 8px; color: #334155; }
.wp-article p { margin: 0 0 16px; }
.wp-article strong { font-weight: 600; color: #0f172a; }

/* 引用块 */
.wp-article blockquote {
  border-left: 4px solid #5b93f5;
  background: #f1f5f9;
  padding: 16px 20px;
  margin: 0 0 20px;
  border-radius: 0 8px 8px 0;
  font-size: 14px;
  color: #475569;
}
.wp-article blockquote p:last-child { margin-bottom: 0; }

/* 表格 */
.wp-article table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: 14px; }
.wp-article th {
  background: #f1f5f9; font-weight: 600; text-align: left;
  padding: 10px 14px; border: 1px solid #e2e8f0; color: #334155;
}
.wp-article td { padding: 10px 14px; border: 1px solid #e2e8f0; color: #475569; }
.wp-article tr:hover td { background: #f8fafc; }

/* 列表 */
.wp-article ul, .wp-article ol { margin: 0 0 16px; padding-left: 24px; }
.wp-article li { margin-bottom: 6px; color: #334155; }

/* 代码 */
.wp-article code {
  background: #f1f5f9; padding: 2px 6px; border-radius: 4px;
  font-size: 13px; font-family: 'SF Mono', 'Fira Code', monospace; color: #7c3aed;
}
.wp-article pre {
  background: #1e293b; color: #e2e8f0; padding: 16px 20px;
  border-radius: 8px; overflow-x: auto; margin: 0 0 20px;
}
.wp-article pre code { background: none; padding: 0; color: inherit; }

/* SVG 图表 */
.wp-figure { margin: 24px 0; text-align: center; }
.wp-figure img, .wp-svg-container { max-width: 100%; border-radius: 8px; overflow: hidden; }
.wp-svg-container svg { display: block; width: 100%; height: auto; }

/* 分隔线 */
.wp-article hr { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }

/* 加载提示 */
.wp-loading { text-align: center; padding: 60px; color: #94a3b8; font-size: 16px; }

/* 返回按钮 */
.wp-back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-secondary); margin-bottom: 16px;
}
.wp-back:hover { color: var(--text-primary); }

/* 响应式 */
@media (max-width: 900px) {
  .wp-toc { display: none; }
  .wp-article { padding: 32px 24px; }
}
@media (max-width: 600px) {
  .wp-layout { padding-top: calc(var(--nav-height) + 16px); }
  .wp-article { padding: 24px 16px; border-radius: 0; }
  .wp-article h1 { font-size: 22px; }
  .wp-article h2 { font-size: 18px; }
  .wp-article h3 { font-size: 16px; }
}