.writing-index {
  max-width: 40rem;
}

.writing-index .post-list {
  gap: 1.75rem;
}

.article {
  max-width: 40rem;
}

.article-header {
  margin-bottom: 2rem;
}

.article-back {
  display: inline-block;
  margin-bottom: 1.25rem;
  color: var(--slate);
  font-size: 0.95rem;
  text-decoration: none;
}

.article-back:hover {
  color: var(--pacific-deep);
}

.article-title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 2.85rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.article-meta {
  margin: 0.85rem 0 0;
  color: var(--slate);
  font-size: 0.95rem;
}

.article-body {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.75;
}

.article-body > * + * {
  margin-top: 1.15rem;
}

.article-body h2 {
  margin-top: 2.4rem;
  margin-bottom: 0.7rem;
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.article-body h3 {
  margin-top: 1.8rem;
  margin-bottom: 0.55rem;
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 500;
}

.article-body p,
.article-body li {
  max-width: 40rem;
}

.article-body ul,
.article-body ol {
  padding-left: 1.25rem;
}

.article-body li + li {
  margin-top: 0.4rem;
}

.article-body a {
  color: var(--pacific-deep);
}

.article-body strong {
  font-weight: 600;
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border-radius: 3px;
  background: rgba(21, 32, 40, 0.06);
}

.article-body pre {
  margin: 1.5rem 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #edf2f5;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.55;
}

.article-body .mermaid {
  width: min(100vw - 2rem, 56rem);
  max-width: none;
  margin: 1.5rem 0;
  margin-left: 50%;
  transform: translateX(-50%);
  overflow-x: auto;
  font-family: var(--font-sans);
  text-align: center;
}

.article-body pre.mermaid {
  border: none;
  background: transparent;
  padding: 0.5rem 0;
}

.article-body pre code {
  padding: 0;
  background: transparent;
  font-size: inherit;
}

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 0 0 0 1rem;
  border-left: 3px solid var(--pacific);
  color: var(--slate);
}

.article-footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}