/* 避免 Markdown 内容撑宽正文 */
.post-article,
.post-content {
  min-width: 0;
  max-width: 100%;
}

/* 块级公式过长时独立横向滚动 */
.post-content .katex-display {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  box-sizing: border-box;
  padding: 0.25rem 0;
  -webkit-overflow-scrolling: touch;
}

.post-content .katex-display > .katex {
  display: inline-block;
  min-width: max-content;
  white-space: nowrap;
}

/* =========================
   Markdown details 下拉栏
   ========================= */

.post-content details {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  margin: 1.5rem 0;
  overflow: hidden;

  border-top: 2px solid #1e3a5f;
  border-radius: 0 0 0.5rem 0.5rem;
  background: rgba(128, 128, 128, 0.14);
}

.post-content details summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;

  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0.8rem 0.9rem;

  cursor: pointer;
  font-weight: 600;
  user-select: none;
  list-style: none;
}

.post-content details summary::-webkit-details-marker {
  display: none;
}

.post-content details summary::before {
  content: "›";
  display: inline-block;
  flex: 0 0 auto;
  font-size: 1.25rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.post-content details[open] summary::before {
  transform: rotate(90deg);
}

.post-content details > :not(summary) {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  margin-top: 0;
  margin-bottom: 0;
  padding-right: 1rem;
}

.post-content details > ol,
.post-content details > ul {
  padding: 0.6rem 1rem 1rem 3rem;
}

.post-content details li {
  margin: 0.8rem 0;
}

blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--deep-red);
  background: rgba(128, 128, 128, 0.1);
  border-radius: 0 0.4rem 0.4rem 0;
}

blockquote p {
  margin: 0;
}

blockquote p + p {
  margin-top: 0.75rem;
}