/* ============================================================
   文章列表页 + 文章详情页 · 页面专属样式（墨韵东方）
   来源：design/articles.html 与 design/article-detail.html
   设计令牌与通用组件（.container/.btn/.text-link 等）复用 site.css
   ============================================================ */

/* ============ 页头（列表页） ============ */
.page-hero {
  position: relative; overflow: hidden; padding: 88px 0 72px;
  background:
    radial-gradient(900px 380px at 15% -20%, rgba(168, 50, 45, .05), transparent 55%),
    radial-gradient(900px 380px at 85% -20%, rgba(46, 71, 86, .07), transparent 60%),
    var(--paper);
}
.page-hero .eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: .3em; color: var(--ink-50); margin-bottom: 22px;
}
.page-hero .eyebrow::before { content: ""; width: 36px; height: 1px; background: var(--faint); }
.page-hero h1 {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(34px, 5vw, 52px); letter-spacing: .05em;
  line-height: 1.3; margin-bottom: 20px;
}
.page-hero h1 em { font-style: normal; color: var(--cinnabar); }
.page-hero .lede { font-size: 16.5px; color: var(--ink-70); max-width: 620px; }
.page-hero .hero-no {
  position: absolute; right: 6%; top: 44px;
  font-family: "Zhi Mang Xing", var(--serif); font-weight: 400; font-size: 190px; line-height: 1;
  color: rgba(168, 50, 45, .09); pointer-events: none;
}
.page-hero .mountains { position: absolute; left: 0; right: 0; bottom: -4px; pointer-events: none; }
.page-hero .mountains svg { display: block; width: 100%; height: 120px; }

/* ============ 分类筛选条 ============ */
.cat-filter {
  position: sticky; top: 77px; z-index: 40;
  background: rgba(247, 244, 237, .95); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--faint);
  box-shadow: 0 10px 24px -18px rgba(28, 28, 28, .35);
}
.filter-inner {
  display: flex; gap: 8px; max-width: var(--container);
  margin: 0 auto; padding: 14px 32px; overflow-x: auto;
}
.filter-pill {
  flex: none; display: inline-flex; align-items: baseline; gap: 8px;
  padding: 8px 18px; border: 1px solid var(--faint); border-radius: 2px;
  font-size: 14px; color: var(--ink-70); background: transparent;
  transition: border-color .2s, color .2s, background-color .2s;
}
.filter-pill b { font-family: var(--serif); color: var(--ink-50); font-weight: 600; font-size: 13px; font-variant-numeric: tabular-nums; }
.filter-pill:hover { border-color: var(--cinnabar); color: var(--ink); }
.filter-pill:hover b { color: var(--cinnabar); }
.filter-pill.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.filter-pill.active b { color: #E8B4B0; }

/* ============ 文章列表 ============ */
.articles-section { padding: 72px 0 96px; }

/* 置顶特写 */
.feature-post {
  position: relative;
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 0;
  background: var(--paper-2); border: 1px solid var(--faint); border-radius: 4px;
  overflow: hidden; margin-bottom: 56px;
  transition: border-color .2s, box-shadow .25s;
}
.card-link { position: absolute; inset: 0; z-index: 2; }
.feature-post:hover { border-color: var(--cinnabar); box-shadow: 0 20px 44px -24px rgba(28, 28, 28, .3); }
.feature-cover { position: relative; background: #242424; min-height: 320px; display: block; }
.feature-body { padding: 40px 44px; display: flex; flex-direction: column; gap: 14px; }
.feature-body .post-meta { justify-content: flex-start; }
.feature-body h2 { font-family: var(--serif); font-size: 26px; font-weight: 700; line-height: 1.5; letter-spacing: .02em; }
.feature-post:hover h2 { color: var(--cinnabar-dark); }
.feature-body p { font-size: 15.5px; color: var(--ink-70); }
.feature-foot {
  margin-top: auto; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-top: 18px; border-top: 1px dashed var(--faint);
}
.read-time { font-size: 12.5px; color: var(--ink-50); letter-spacing: .1em; }
.read-more { font-size: 13.5px; letter-spacing: .2em; color: var(--ink-70); display: inline-flex; align-items: center; gap: 6px; }
.feature-post:hover .read-more { color: var(--cinnabar); }
.read-more .arrow { transition: transform .25s var(--ease); display: inline-block; }
.feature-post:hover .read-more .arrow { transform: translateX(5px); }

/* 常规卡片网格 */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.post-card {
  position: relative;
  background: var(--paper-2); border: 1px solid var(--faint); border-radius: 4px;
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color .2s, transform .25s var(--ease), box-shadow .25s;
}
.post-card:hover { border-color: var(--cinnabar); transform: translateY(-5px); box-shadow: 0 18px 38px -22px rgba(28, 28, 28, .28); }
.post-cover { aspect-ratio: 16 / 10; position: relative; background: #242424; overflow: hidden; display: block; }
.post-cat {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: rgba(28, 28, 28, .82); color: var(--paper);
  font-size: 12px; letter-spacing: .16em; padding: 3px 12px; border-radius: 2px;
}
.post-cat-static { position: static; background: var(--ink); }
.feature-cover img, .post-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.post-body { padding: 22px 22px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.post-meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--ink-50); letter-spacing: .06em; font-variant-numeric: tabular-nums; }
.post-meta .pin { color: var(--cinnabar); letter-spacing: .12em; }
.post-body h2 { font-family: var(--serif); font-size: 18.5px; font-weight: 700; line-height: 1.55; letter-spacing: .01em; }
.post-card:hover h2 { color: var(--cinnabar-dark); }
.post-body p {
  font-size: 13.5px; color: var(--ink-70); flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.post-foot { display: flex; gap: 14px; font-size: 12.5px; color: var(--ink-50); letter-spacing: .06em; font-variant-numeric: tabular-nums; }

/* 无封面时的墨格底纹占位 */
.cover-art { position: absolute; inset: 0; background: #242424; }
.cover-art::before {
  content: ""; position: absolute; inset: 0; opacity: .6;
  background:
    repeating-linear-gradient(to right, #3D3D3B 0 1px, transparent 1px 80px),
    repeating-linear-gradient(to bottom, #3D3D3B 0 1px, transparent 1px 80px);
}
.cover-art::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 11px; height: 11px; background: var(--cinnabar); border-radius: 2px;
  transform: translate(-50%, -50%) rotate(45deg);
}

/* 空状态 */
.empty-state { text-align: center; padding: 72px 0 48px; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.empty-state .empty-glyph {
  width: 72px; height: 72px; border: 1px dashed var(--faint); border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 30px; color: var(--ink-50);
}
.empty-state p { color: var(--ink-70); font-size: 15.5px; }

/* 分页 */
.pager { display: flex; justify-content: center; align-items: center; gap: 10px; margin-top: 56px; }
.pager a, .pager span {
  min-width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--faint); border-radius: 2px; font-size: 14px; color: var(--ink-70);
  font-variant-numeric: tabular-nums; transition: border-color .2s, color .2s; padding: 0 12px;
}
.pager a:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.pager .cur { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.pager .gap { border: none; color: var(--ink-50); }

/* ============ 文末 CTA（浅色变体，区别于首页深色 .cta） ============ */
.page-cta { position: relative; overflow: hidden; padding: 96px 0; background: var(--paper-2); border-top: 1px solid var(--faint-2); }
.page-cta-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 18px; position: relative; z-index: 2; }
.page-cta-inner::before {
  content: "知行合一"; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: "Ma Shan Zheng", var(--serif); font-weight: 400; font-size: 150px;
  color: rgba(28, 28, 28, .045); letter-spacing: .2em; white-space: nowrap; pointer-events: none;
}
.page-cta h2 { font-family: var(--serif); font-size: clamp(28px, 4vw, 40px); font-weight: 900; letter-spacing: .06em; }
.page-cta p { color: var(--ink-70); font-size: 16px; max-width: 520px; }

/* ============ 文章详情 · 页头 ============ */
.art-hero {
  padding: 48px 0 40px; border-bottom: 1px solid var(--faint);
  background: radial-gradient(700px 280px at 88% -40%, rgba(46, 71, 86, .06), transparent 60%), var(--paper);
}
.crumbs {
  font-size: 13px; color: var(--ink-50); letter-spacing: .05em;
  margin-bottom: 26px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.crumbs a:hover { color: var(--cinnabar); }
.crumbs .sep { opacity: .5; }
.art-hero h1 {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(28px, 4vw, 42px); letter-spacing: .02em; line-height: 1.45; max-width: 840px;
}
.art-meta {
  display: flex; align-items: center; gap: 16px; margin-top: 20px;
  flex-wrap: wrap; font-size: 13.5px; color: var(--ink-50); font-variant-numeric: tabular-nums;
}
.art-meta .cat { background: var(--ink); color: var(--paper); padding: 4px 14px; border-radius: 2px; letter-spacing: .16em; font-size: 12.5px; }
.art-meta .dot { opacity: .4; }
.art-lede {
  margin-top: 22px; font-size: 16.5px; color: var(--ink-70); max-width: 760px;
  border-left: 3px solid var(--cinnabar); padding-left: 18px; line-height: 1.9;
}
.art-actions { display: flex; gap: 16px; margin-top: 30px; flex-wrap: wrap; }

/* ============ 详情主体两栏 ============ */
.art-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; padding: 56px 0 72px; align-items: start; }
.art-content { max-width: 720px; min-width: 0; }
.art-content .cover { width: 100%; aspect-ratio: 21 / 9; object-fit: cover; border-radius: 4px; margin-bottom: 40px; display: block; border: 1px solid var(--faint); }

/* ---------- 正文排版 ---------- */
.article-body h2 {
  font-family: var(--serif); font-size: 25px; font-weight: 700; letter-spacing: .04em;
  margin: 52px 0 18px; padding-left: 16px; border-left: 4px solid var(--cinnabar); scroll-margin-top: 96px;
}
.article-body h2:first-child { margin-top: 0; }
.article-body h3 { font-family: var(--serif); font-size: 19px; font-weight: 700; margin: 34px 0 12px; scroll-margin-top: 96px; }
.article-body p { font-size: 15.5px; color: var(--ink-70); margin-bottom: 16px; line-height: 2; }
.article-body strong { color: var(--ink); }
.article-body a { color: var(--cinnabar-dark); border-bottom: 1px solid rgba(168, 50, 45, .35); }
.article-body blockquote {
  background: var(--paper-2); border-left: 3px solid var(--cinnabar);
  padding: 18px 22px; margin: 24px 0; border-radius: 0 4px 4px 0;
  font-family: var(--serif); font-size: 16px; color: var(--ink); line-height: 1.95;
}
.article-body blockquote p { margin-bottom: 0; font-size: 16px; color: var(--ink); }
.article-body ul, .article-body ol { padding-left: 22px; margin: 0 0 18px; display: flex; flex-direction: column; gap: 8px; }
.article-body li { font-size: 15.5px; color: var(--ink-70); }
.article-body code {
  font-family: Consolas, "JetBrains Mono", monospace; font-size: 13.5px;
  background: var(--faint-2); padding: 2px 7px; border-radius: 3px; color: var(--cinnabar-dark);
}
.article-body pre { background: #1E1E1C; color: #E8E3D8; padding: 20px 24px; border-radius: 6px; overflow-x: auto; margin: 24px 0; font-size: 13.5px; line-height: 1.8; }
.article-body pre code { background: none; padding: 0; color: inherit; }
.article-body img { max-width: 100%; border-radius: 4px; border: 1px solid var(--faint); }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-body th { background: var(--ink); color: var(--paper); font-weight: 500; letter-spacing: .08em; padding: 10px 14px; text-align: left; }
.article-body td { border-bottom: 1px solid var(--faint); padding: 10px 14px; color: var(--ink-70); }
.article-body tr td:first-child { color: var(--ink); font-weight: 500; }
.article-body hr { border: none; border-top: 1px solid var(--faint); margin: 32px 0; }

/* 文末标签 / 转载提示 */
.art-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 48px; padding-top: 28px; border-top: 1px dashed var(--faint); }
.art-tags span {
  border: 1px solid var(--faint); padding: 5px 16px; border-radius: 2px;
  font-size: 13px; color: var(--ink-70); letter-spacing: .06em;
}
.reprint-note {
  margin-top: 28px; font-size: 13px; color: var(--ink-50); letter-spacing: .04em;
  border: 1px dashed var(--faint); padding: 10px 16px; border-radius: 2px; background: var(--paper-2);
}

/* 文末转化卡 */
.end-card {
  margin-top: 32px; background: var(--paper-2); border: 1px solid var(--faint); border-radius: 4px;
  padding: 30px 32px; display: flex; align-items: center; justify-content: space-between;
  gap: 24px; position: relative; overflow: hidden;
}
.end-card::after {
  content: "聊"; position: absolute; right: 18px; bottom: -30px;
  font-family: "Zhi Mang Xing", var(--serif); font-weight: 400; font-size: 120px;
  color: rgba(168, 50, 45, .06); pointer-events: none;
}
.end-card h3 { font-family: var(--serif); font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.end-card p { font-size: 14px; color: var(--ink-50); }

/* 上下篇 */
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.post-nav a, .post-nav .none {
  border: 1px solid var(--faint); border-radius: 4px; padding: 16px 20px;
  display: flex; flex-direction: column; gap: 4px; background: var(--paper-2);
  transition: border-color .2s;
}
.post-nav a:hover { border-color: var(--cinnabar); }
.post-nav .none { border-style: dashed; background: transparent; }
.post-nav .dir { font-size: 12px; letter-spacing: .2em; color: var(--ink-50); }
.post-nav b { font-family: var(--serif); font-size: 15px; font-weight: 700; line-height: 1.5; }
.post-nav a.next, .post-nav .none.next { text-align: right; }

/* 相关文章 */
.related-posts { margin-top: 56px; }
.related-posts h3 { font-family: var(--serif); font-size: 21px; font-weight: 700; letter-spacing: .06em; margin-bottom: 20px; display: flex; align-items: center; gap: 12px; }
.related-posts h3::before { content: ""; width: 26px; height: 3px; background: var(--cinnabar); }
.rel-grid { display: flex; flex-direction: column; }
.rel-row { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; padding: 14px 4px; border-bottom: 1px dashed var(--faint); }
.rel-row a { font-family: var(--serif); font-size: 15.5px; font-weight: 600; transition: color .2s; }
.rel-row a:hover { color: var(--cinnabar); }
.rel-row span { font-size: 12.5px; color: var(--ink-50); flex: none; font-variant-numeric: tabular-nums; }

/* ---------- 侧栏 ---------- */
.art-side { position: sticky; top: 104px; display: flex; flex-direction: column; gap: 20px; }
.side-card { background: var(--paper-2); border: 1px solid var(--faint); border-radius: 4px; padding: 24px; }
.side-card h3 { font-size: 13px; letter-spacing: .28em; color: var(--ink-50); font-weight: 500; margin-bottom: 16px; }
.author-card { display: flex; gap: 16px; align-items: flex-start; }
.author-seal {
  width: 52px; height: 52px; flex: none; border-radius: 2px;
  background: var(--cinnabar); color: #FFF7F2;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 22px; font-weight: 700;
}
.author-card b { font-family: var(--serif); font-size: 16.5px; display: block; margin-bottom: 2px; }
.author-card span { font-size: 12.5px; color: var(--ink-50); display: block; line-height: 1.6; }
.author-card .text-link { display: inline-block; margin-top: 12px; font-size: 13px; letter-spacing: .1em; }
.tip-card { text-align: center; }
.tip-card img.qr {
  width: 148px; height: 148px; margin: 4px auto 12px; display: block;
  border: 1px solid var(--faint); border-radius: 4px;
}
.tip-card p { font-size: 12.5px; color: var(--ink-50); }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .posts-grid { grid-template-columns: 1fr 1fr; }
  .feature-post { grid-template-columns: 1fr; }
  .feature-cover { min-height: 240px; aspect-ratio: 21 / 9; }
  .page-hero .hero-no { font-size: 130px; right: 4%; }
  .art-layout { grid-template-columns: 1fr; gap: 40px; }
  .art-side { position: static; flex-direction: row; flex-wrap: wrap; }
  .art-side .side-card { flex: 1 1 260px; }
}
@media (max-width: 640px) {
  .cat-filter { position: static; }
  .page-hero { padding: 56px 0 48px; }
  .articles-section { padding: 48px 0 64px; }
  .posts-grid { grid-template-columns: 1fr; }
  .feature-post { margin-bottom: 40px; }
  .feature-body { padding: 24px 22px; }
  .art-hero { padding: 32px 0; }
  .art-lede { padding-left: 14px; }
  .art-layout { padding: 40px 0 56px; }
  .article-body h2 { font-size: 21px; margin: 40px 0 14px; }
  .end-card { flex-direction: column; align-items: flex-start; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav a.next, .post-nav .none.next { text-align: left; }
  .page-cta-inner::before { font-size: 80px; }
}