/* ============================================================
   博客区布局 · 编辑杂志风
   依赖 design-language.css 的变量与基础元素
   ============================================================ */

*{ box-sizing: border-box; }
html, body{ margin:0; padding:0; }

/* —— 页头 —— */
.blog-header{
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.blog-header .brand{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
}
.blog-header nav{
  display: flex;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 14px;
}
.blog-header nav a{
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 7px;
  color: var(--sub);
  text-decoration: none;
}
.blog-header nav a:hover, .blog-header nav a[aria-current="page"]{ color: var(--accent); }

/* —— 列表页 —— */
.blog-index{
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}
.blog-index .index-head{ margin-bottom: 56px; }
.blog-index h1{
  font-size: clamp(34px, 5vw, 52px);
  margin: 10px 0 14px;
}
.blog-index .index-intro{
  font-family: var(--font-serif);
  color: var(--sub);
  max-width: 56ch;
  margin: 0;
}

.post-list{ list-style: none; margin: 0; padding: 0; }
.post-list li{
  border-top: 1px solid var(--line);
  padding: 30px 0;
}
.post-list li:last-child{ border-bottom: 1px solid var(--line); }
.post-list .post-date{
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--faint);
  letter-spacing: .04em;
}
.post-list h2{
  font-size: clamp(21px, 2.6vw, 27px);
  margin: 6px 0 10px;
  line-height: 1.3;
}
.post-list h2 a{ color: var(--ink); text-decoration: none; }
.post-list h2 a:hover{ color: var(--accent); }
.post-list .post-excerpt{
  font-family: var(--font-serif);
  color: var(--sub);
  margin: 0;
  max-width: 62ch;
}

/* —— 文章页 —— */
.article{
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.article-head{ margin-bottom: 48px; }
.article-head h1{
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1.22;
  margin: 12px 0 18px;
}
.article-meta{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 13.5px;
  color: var(--faint);
  letter-spacing: .04em;
}
.article-meta a{ color: inherit; }
.article-meta .sep{ margin: 0 2px; color: var(--line); }

.article .prose{
  margin: 0 auto;
  font-size: 17.5px;
}
.article .prose h2{
  font-size: clamp(22px, 2.8vw, 28px);
  margin: 2em 0 .7em;
  line-height: 1.35;
}
.article .prose h3{
  font-size: clamp(18px, 2.2vw, 21px);
  margin: 1.8em 0 .6em;
  font-family: var(--font-hei);
  font-weight: 700;
}
.article .prose ul, .article .prose ol{ padding-left: 1.4em; margin: 0 0 1.1em; }
.article .prose li{ margin-bottom: .4em; }
.article .prose strong{ font-weight: 700; }
.article .prose .pullquote{
  font-family: var(--font-kai);
  color: var(--accent);
  font-size: 1.25em;
  line-height: 1.6;
  border: none;
  padding: 0;
  margin: 2em 0;
  text-align: center;
}

/* —— 独立内容页 —— */
.content-page{
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.content-head{ margin-bottom: 46px; }
.content-head h1{
  font-size: clamp(36px, 5vw, 58px);
  margin: 10px 0 16px;
}
.content-lede{
  max-width: 62ch;
  margin: 0;
  color: var(--sub);
  font-family: var(--font-serif);
  font-size: 19px;
}
.content-section{
  margin-top: 52px;
  max-width: var(--measure);
}
.content-section h2{
  font-size: clamp(24px, 3vw, 31px);
  margin: 0 0 18px;
}
.content-section p{ margin: 0 0 1.1em; }
.content-section ul{ padding-left: 1.25em; }
.content-section li{ margin-bottom: .55em; }
.evidence-list{
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  border-top: 1px solid var(--line);
}
.evidence-list li{
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 20px;
  padding: 13px 0;
  margin: 0;
  border-bottom: 1px solid var(--line);
}
.evidence-list strong{ font-family: var(--font-sans); font-size: 14px; }
.link-list{ list-style: none; padding: 0; }
.link-list li{ margin: 0; border-top: 1px solid var(--line); }
.link-list li:last-child{ border-bottom: 1px solid var(--line); }
.link-list a{ display: block; padding: 15px 0; color: var(--ink); text-decoration: none; }
.link-list a:hover{ color: var(--accent); }

/* —— 文末 —— */
.article-foot{
  max-width: var(--measure);
  margin: 64px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: 14.5px;
  color: var(--sub);
}
.article-foot .related-reading{ margin: 0; }
.article-foot .back-link{ display:inline-block; margin-top: 10px; }

/* —— 页脚 —— */
.blog-footer{
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 40px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  color: var(--faint);
  text-align: center;
}
.blog-footer a{ color: var(--faint); }

@media (max-width: 560px){
  .blog-index, .article, .content-page{ padding-top: 40px; }
  .blog-header{ align-items: flex-start; flex-direction: column; gap: 4px; }
  .blog-header nav{ width: 100%; justify-content: space-between; gap: 0; }
  .blog-header nav a{ padding: 0 5px; }
  .evidence-list li{ grid-template-columns: 1fr; gap: 3px; }
}