/* ============================================
   Blog — 只处理博客页特有的排版（列表卡、文章正文、RSS/元信息）
   颜色与字体全部复用 style.css 的 :root 变量，不硬编码色值。
   站点浅色主题（2026-09-23 定）：无深色模式、无切换按钮。
   ============================================ */

.blog-hero {
  padding: 56px 0 32px;
}
.blog-hero h1 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.blog-hero p {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 62ch;
}
.blog-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 18px;
}
.blog-back:hover { color: var(--text-primary); }

/* ---------- 文章列表 ---------- */
.post-list {
  display: grid;
  gap: 20px;
  padding-bottom: 72px;
}
.post-card {
  display: block;
  padding: 26px 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  text-decoration: none;
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.post-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.post-card h2 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.post-card p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.post-meta .dot { color: var(--text-faint); }
.tag {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-inset);
}

/* ---------- 文章页 ---------- */
.post-header {
  padding: 48px 0 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}
.post-header h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.4rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
  max-width: 30ch;
}
.post {
  max-width: 74ch;
  padding-bottom: 40px;
}
.post-body { font-size: 1.0625rem; line-height: 1.78; color: var(--text-secondary); }
.post-body > * + * { margin-top: 1.1em; }
.post-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-top: 2.2em;
  margin-bottom: 0.5em;
}
.post-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 1.8em;
  margin-bottom: 0.4em;
}
.post-body strong { color: var(--text-primary); font-weight: 650; }
.post-body a { color: var(--text-primary); text-decoration: underline; text-underline-offset: 3px; }
.post-body ul, .post-body ol { padding-left: 1.3em; }
.post-body li { margin-top: 0.45em; }
.post-body li::marker { color: var(--text-faint); }
.post-body blockquote {
  border-left: 3px solid var(--border-strong);
  padding: 4px 0 4px 18px;
  color: var(--text-secondary);
  font-style: italic;
}
.post-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
}
.post-body pre {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
}
.post-body pre code { background: none; border: 0; padding: 0; }
.post-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.post-body th, .post-body td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}
.post-body th {
  background: var(--bg-inset);
  color: var(--text-primary);
  font-weight: 650;
}
.post-body img { max-width: 100%; height: auto; border-radius: 10px; }
.post-body hr { border: 0; border-top: 1px solid var(--border); margin: 2.4em 0; }

/* ---------- 文末：上下篇 + CTA ---------- */
.post-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  padding: 28px 0 8px;
  border-top: 1px solid var(--border);
  margin-top: 44px;
}
.post-nav a {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  background: var(--bg-card);
}
.post-nav a:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.post-nav .label { display: block; font-size: 0.75rem; color: var(--text-muted); margin-bottom: 6px; }
.post-nav .title { font-size: 0.9375rem; font-weight: 650; color: var(--text-primary); }

.post-cta {
  margin: 40px 0 72px;
  padding: 26px 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
}
.post-cta p { margin-bottom: 14px; color: var(--text-secondary); }

/* ---------- 特色文章：顶部示意图 + 文章右栏关联产品 ---------- */
.post--featured { max-width: none; }
.post-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  gap: 42px;
  align-items: stretch;
  padding: 18px 0 34px;
  border-bottom: 1px solid var(--border);
}
.post-hero-copy { min-width: 0; display: flex; flex-direction: column; }
.post-hero-copy .post-header { margin: auto 0 0; padding: 34px 0 0; border-bottom: 0; }
.post-hero-media {
  margin: 0;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-inset);
}
.post-hero-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.post-hero-media figcaption {
  padding: 10px 14px 12px;
  color: var(--text-muted);
  font-size: .75rem;
  line-height: 1.45;
  background: var(--bg-card);
}
.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 42px;
  align-items: start;
  padding-top: 38px;
}
.post-main { min-width: 0; }
.post-related {
  position: sticky;
  top: 104px;
  padding: 22px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.post-related h2 { margin: 0 0 8px; color: var(--text-primary); font-size: 1.15rem; }
.post-related-intro { margin: 0 0 18px; color: var(--text-secondary); font-size: .875rem; line-height: 1.55; }
.post-related-list { display: grid; gap: 12px; }
.post-related-card {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--border);
  color: inherit;
  text-decoration: none;
  background: var(--bg-inset);
  transition: border-color .18s ease, transform .18s ease;
}
.post-related-card:hover { border-color: var(--cyan); transform: translateY(-2px); }
.post-related-media { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-card); }
.post-related-media img { display: block; width: 100%; height: 100%; object-fit: contain; }
.post-related-copy { min-width: 0; display: grid; gap: 4px; }
.post-related-kicker { color: var(--cyan); font: 600 .7rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; }
.post-related-name { color: var(--text-primary); font-size: .9rem; line-height: 1.25; }
.post-related-link { color: var(--text-secondary); font-size: .75rem; }

@media (max-width: 640px) {
  .post-card { padding: 22px 20px; }
  .post-header { padding: 34px 0 22px; }
}

@media (max-width: 900px) {
  .post-hero, .post-layout { grid-template-columns: 1fr; gap: 26px; }
  .post-hero-media { order: -1; min-height: 0; }
  .post-hero-media img { height: auto; aspect-ratio: 16 / 10; }
  .post-related { position: static; }
}

/* ---------- 新闻式列表（2026-10-05 站长："每条一张封面图 + 标题 + 摘要，
   不要一长条纯文字"）。写成覆盖段而不是改原段：blog.css 那份留着给别的引用方，
   本文件是 /blog/ 唯一使用的那份，文件名换掉是为了打穿 css 的 7 天缓存档期。 ---------- */
.post-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.post-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}
.post-cover { display: block; line-height: 0; }
.post-cover img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.post-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1 1 auto;
  padding: 20px 22px 22px;
}
.post-card h2 { font-size: 1.1875rem; margin: 0; }
.post-card p { margin: 0; }
.post-meta { margin-top: auto; padding-top: 6px; }
@media (max-width: 900px) {
  .post-list { grid-template-columns: 1fr; }
}