/* Hifengda blog / resources styles (2026-10-25)
   Loaded only on /blog and /blog/<slug>. Reuses :root vars from style.css. */

/* ---------- listing page ---------- */
.blog-hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 24px 24px;
  text-align: center;
}
.blog-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  color: var(--ink);
  margin: 0 0 14px;
  letter-spacing: -.5px;
}
.blog-hero p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--body);
  font-size: 17px;
  line-height: 1.7;
}
.blog-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 24px 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.post-card-cat {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
}
.post-card h3 {
  font-size: 19px;
  line-height: 1.35;
  color: var(--ink);
  margin: 0 0 10px;
}
.post-card p {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--body);
  margin: 0 0 16px;
  flex: 1;
}
.post-card-meta {
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

/* ---------- article page ---------- */
.article {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 24px 72px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 18px;
}
.article-meta .cat {
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--primary);
}
.article-meta .dot { color: var(--border); }
.article h1 {
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -.02em;
  font-weight: 800;
  margin: 0 0 12px;
}
.article h2 {
  font-size: 26px;
  color: var(--ink);
  margin: 38px 0 14px;
  letter-spacing: -.3px;
}
.article h3 {
  font-size: 20px;
  color: var(--ink);
  margin: 28px 0 10px;
}
.article p {
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--body);
  margin: 0 0 16px;
}
.article ul, .article ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.8;
}
.article li { margin: 6px 0; }
.article a {
  color: var(--primary-700);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article blockquote {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink);
  font-style: italic;
}
.article hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
.article code {
  background: var(--bg-tint);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 14px;
}

/* ---------- FAQ block ---------- */
.faq {
  margin: 40px 0 0;
  padding: 28px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.faq h2 { margin-top: 0; }
.faq-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; padding-bottom: 0; }
.faq-item h3 {
  font-size: 17px;
  color: var(--ink);
  margin: 0 0 8px;
}
.faq-item div { color: var(--body); line-height: 1.75; font-size: 15.5px; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .blog-grid { grid-template-columns: 1fr; }
  .article { padding: 28px 18px 56px; }
  .article h2 { font-size: 22px; }
}