/* ============================================================
   DecodeNews AI · 单篇文章页视觉 v1（2026-11-05）
   ------------------------------------------------------------
   作用域：只挂单篇页（生成器 extra_css="post-2026.css"），
   全站 style.css / polish.css / cat-colors.css / site-v2.js 一行未动。

   设计原则
   1. 阅读优先：正文一栏 38.5rem（≈37 个汉字/行 @16px），行高 1.95；
      字号用 rem，跟随站上「字号」控件缩放，每行字数不变。
   2. 标题区做层次：大标题（sans 700，负字距）+ 栏目色数据行 + 一道细线，
      而不是一行灰字堆在大标题下面。
   3. 桌面端目录进右栏（sticky），窄屏折叠成一行「本篇要点」；
      折叠/展开与滚动高亮由模板里的内联脚本加 class，不依赖 site-v2.js。
   4. 收尾的四个区块（来源 / 关键词 / 相关 / 评论）统一用「小标 + 发丝线」
      分隔，不再一层层套卡片；来源列表做成带 [1][2] 的参考文献样式。
   5. 颜色全部走站点变量（polish.css 的 --bg-card/--text-primary/…，
      回退到 style.css 的 --card/--fg/…），暗色由 html[data-theme="dark"]
      的变量覆盖自动跟随，本文件不写死任何主题色。

   少量 !important 只用于对抗生成器写在标签上的行内 style
   （题图 figure/img、来源块 section/h2/ul）——那些行内样式无法用
   提高特异度解决，这也是唯一「必须用 !important」的地方。
   ============================================================ */

/* ── 1. 作用域变量：别名站内变量，单一开关点 ───────────────── */
body[data-page="post"] {
  --post-measure: 38.5rem;          /* 正文栏宽（阅读行宽） */
  --post-rail: 15.5rem;             /* 桌面右栏（目录）宽 */
  --post-gap: clamp(2rem, 3.2vw, 3.25rem);

  --post-ink:    var(--text-primary, var(--fg));
  --post-muted:  var(--text-secondary, var(--muted));
  --post-line:   var(--border-color, var(--line));
  --post-card:   var(--bg-card, var(--card));
  --post-accent: var(--accent-color, var(--accent));
  --post-accent-soft: var(--accent-glow, rgba(15, 118, 110, .15));

  background: var(--bg-main, var(--bg));
  color: var(--post-ink);
}

/* ── 2. 骨架：单栏正文，桌面加右栏 ─────────────────────────── */
body[data-page="post"] .post-main {
  max-width: var(--post-measure);
  margin: 0 auto;
}

body[data-page="post"] .post-head {
  padding: 0 0 1.25rem;
  margin: 0 0 1.5rem;
  border-bottom: 1px solid var(--post-line);
}

/* ── 3. 标题区 ─────────────────────────────────────────────── */
/* 小竖条：视觉上把标题从上方导航里「拎」出来 */
body[data-page="post"] .post-head::before {
  content: "";
  display: block;
  width: 2.1rem;
  height: 3px;
  border-radius: 2px;
  margin: 0 0 .9rem;
  background: var(--post-accent);
}

body[data-page="post"] h1.art {
  margin: 0 0 .7rem;
  padding: 0;
  border: 0;
  font-size: clamp(1.55rem, 3.4vw, 2.05rem);
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: -.006em;
  color: var(--post-ink);
  text-wrap: pretty;                  /* 比 balance 更不容易把「手机」这种词拆到两行 */
  word-break: normal;
  word-break: auto-phrase;            /* 支持的浏览器按词组断行（Chrome 119+），不支持的退回上一行 */
}

/* 元信息：颜色沿用栏目色（cat-colors.css 给 .art-meta.cat-* 的 color），
   这里只调字号、字距与数字对齐。
   文案本身保持生成器原样——英文镜像靠「　·　N 字　·　」「约N分钟」等
   精确文本替换，所以只给分段套 nowrap 的 span（不拆字），让换行落在分隔点上。 */
body[data-page="post"] .art-meta {
  margin: 0;
  font-size: .8rem;
  line-height: 1.75;
  letter-spacing: .012em;
  font-variant-numeric: tabular-nums;
}
body[data-page="post"] .art-meta .view-count {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
/* 来源家数不拆行（「（网络）」被拦腰折断很难看）；
   英文镜像的「依据 N 家来源（网络）」是纯文本正则替换，span 不影响匹配。 */
body[data-page="post"] .art-meta .art-src,
body[data-page="post"] .art-meta .art-now,
body[data-page="post"] .art-meta .vw { white-space: nowrap; }

/* ── 4. 目录（nav.toc.toc-post）────────────────────────────── */
/* 窄屏：一行可点的「本篇要点」，点开才是列表；桌面：右栏常驻。 */
body[data-page="post"] .toc-post {
  display: block;                    /* 压掉 style.css 里 .toc 的列表网格 */
  margin: 0 0 1.4rem;
  padding: .7rem .9rem;
  border: 1px solid var(--post-line);
  border-radius: .7rem;
  background: var(--post-card);
}
body[data-page="post"] .toc-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  width: 100%;
  min-height: 2rem;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: var(--post-muted);
  font: inherit;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-align: left;
  cursor: pointer;
}
body[data-page="post"] .toc-chev {
  flex: none;
  width: .46rem;
  height: .46rem;
  margin-right: .1rem;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg);
  transition: transform .18s ease;
}
body[data-page="post"] .toc-post.is-open .toc-chev { transform: rotate(-135deg); }

body[data-page="post"] .toc-post ol {
  display: none;
  margin: .55rem 0 0;
  padding: .55rem 0 0;
  border-top: 1px solid var(--post-line);
  list-style: none;
  counter-reset: toc;
}
body[data-page="post"] .toc-post.is-open ol { display: block; }

/* 压掉 style.css 「往期目录」把 .toc li 当卡片的那套 */
body[data-page="post"] .toc-post li {
  counter-increment: toc;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
}
body[data-page="post"] .toc-post li a {
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  gap: .3rem;
  padding: .3rem 0;
  border: 0;                          /* nav a 的 2px 下划线在目录里不要 */
  color: var(--post-muted);
  font-size: .86rem;
  font-weight: 500;
  line-height: 1.55;
  text-decoration: none;
  word-break: normal;                 /* 压掉 style.css 给往期目录的 break-all（英文会拆词） */
  overflow-wrap: break-word;
  text-wrap: pretty;                  /* 避免末行只剩一个字 */
}
body[data-page="post"] .toc-post li a::before {
  content: counter(toc, decimal-leading-zero);
  padding-top: .16em;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .04em;
  color: var(--post-muted);
  opacity: .75;
}
body[data-page="post"] .toc-post li a:hover { color: var(--post-accent); }
body[data-page="post"] .toc-post li a[aria-current] {
  color: var(--post-ink);
  font-weight: 600;
}
body[data-page="post"] .toc-post li a[aria-current]::before {
  color: var(--post-accent);
  opacity: 1;
  font-weight: 700;
}

/* ── 5. 题图 ───────────────────────────────────────────────── */
/* figure/img/figcaption 都带行内 style，只能用 !important 盖。 */
body[data-page="post"] .post-main > .hero {
  margin: 0 0 1.8rem !important;
}
body[data-page="post"] .hero img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 14px !important;
  background: var(--post-line);
}
body[data-page="post"] .hero figcaption {
  margin-top: .55rem !important;
  font-size: .75rem !important;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--post-muted) !important;
}

/* ── 6. 正文 ───────────────────────────────────────────────── */
body[data-page="post"] .post-body {
  font-size: 1.03rem;
  line-height: 1.95;
  letter-spacing: .012em;
  color: var(--post-ink);
  overflow-wrap: break-word;
  word-break: normal;
  text-align: start;
  hanging-punctuation: allow-end;
}

body[data-page="post"] .post-body p {
  margin: 0 0 1.35em;
}
body[data-page="post"] .post-body > p:first-child {
  font-size: 1.06em;
  line-height: 1.9;
}
body[data-page="post"] .post-body > p:last-child { margin-bottom: 0; }

/* 小节标题：编号 + 实词，编号与目录序号一致（01、02…） */
body[data-page="post"] .post-body h2 {
  counter-increment: sec;
  margin: 2.5rem 0 .95rem;
  padding: 0;
  border: 0;
  font-size: 1.14rem;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--post-ink);
  scroll-margin-top: 5.5rem;
}
body[data-page="post"] .post-body { counter-reset: sec; }
body[data-page="post"] .post-body h2::before {
  content: counter(sec, decimal-leading-zero);
  display: inline-block;
  min-width: 1.55rem;
  margin-right: .45rem;
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--post-accent);
  transform: translateY(-.12em);
}
body[data-page="post"] .post-body h2::after { content: none; }  /* style.css 的装饰线不要 */

body[data-page="post"] .post-body h3 {
  margin: 1.9rem 0 .6rem;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--post-ink);
}

body[data-page="post"] .post-body a {
  color: var(--post-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
}
body[data-page="post"] .post-body a:hover { text-decoration-thickness: 2px; }

body[data-page="post"] .post-body strong,
body[data-page="post"] .post-body b { font-weight: 700; }

body[data-page="post"] .post-body ul,
body[data-page="post"] .post-body ol {
  margin: 0 0 1.35em;
  padding-left: 1.5em;
  list-style: revert;                 /* style.css 全局 ul{list-style:none} 会吃掉项目符号 */
}
body[data-page="post"] .post-body li { margin: .35em 0; }
body[data-page="post"] .post-body li::marker { color: var(--post-muted); }

body[data-page="post"] .post-body blockquote {
  margin: 1.7rem 0;
  padding: .15rem 0 .15rem 1.15rem;
  border-left: 3px solid var(--post-accent);
  color: var(--post-muted);
  font-size: 1.01em;
  line-height: 1.9;
}
body[data-page="post"] .post-body blockquote p:last-child { margin-bottom: 0; }

body[data-page="post"] .post-body code {
  padding: .08em .34em;
  border: 1px solid var(--post-line);
  border-radius: .3rem;
  background: var(--post-card);
  font-family: var(--mono);
  font-size: .88em;
}
body[data-page="post"] .post-body pre {
  margin: 1.6rem 0;
  padding: .9rem 1rem;
  border: 1px solid var(--post-line);
  border-radius: .6rem;
  background: var(--post-card);
  font-size: .86rem;
  line-height: 1.65;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
body[data-page="post"] .post-body pre code {
  padding: 0;
  border: 0;
  background: none;
  font-size: inherit;
}

body[data-page="post"] .post-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem auto;
  border-radius: 10px;
}
body[data-page="post"] .post-body figure { margin: 1.5rem 0; }
body[data-page="post"] .post-body figcaption {
  margin-top: .45rem;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--post-muted);
}

body[data-page="post"] .post-body table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: .9rem;
  line-height: 1.65;
}
body[data-page="post"] .post-body th,
body[data-page="post"] .post-body td {
  padding: .45rem .6rem;
  border-bottom: 1px solid var(--post-line);
  text-align: left;
}
body[data-page="post"] .post-body th { font-weight: 700; }

body[data-page="post"] .post-body hr {
  margin: 2.2rem 0;
  border: 0;
  border-top: 1px solid var(--post-line);
}

/* 广告位（ADS_ENABLED 打开后才会出现，预留间距，不抢阅读） */
body[data-page="post"] .post-body ins.adsbygoogle {
  display: block;
  margin: 1.8rem 0;
}

/* ── 7. 收尾区块共用的「小标」样式 ─────────────────────────── */
body[data-page="post"] .src-block > h2,
body[data-page="post"] .related .rhead,
body[data-page="post"] .discuss .discuss-title,
body[data-page="post"] .c-note,
body[data-page="post"] .discuss .c-title {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--post-muted);
  /* 压掉 style.css 给「单篇页 h2」的左侧色条 + 底部短横线 */
  padding: 0;
  border: 0;
}
body[data-page="post"] .src-block > h2::after,
body[data-page="post"] .discuss .discuss-title::after { content: none; }

/* ── 8. 来源块：参考文献式 ─────────────────────────────────── */
/* section/h2/ul 上有生成器写的行内 style，必须 !important。 */
body[data-page="post"] .post-main > section.src-block {
  margin: 2.6rem 0 0 !important;
  padding: 1.5rem 0 0 !important;
  border: 0 !important;
  border-top: 1px solid var(--post-line) !important;
  border-radius: 0 !important;
  background: none !important;
}
body[data-page="post"] .src-block > h2 {
  margin: 0 0 .8rem !important;
  font-size: .78rem !important;
  line-height: 1.6;
  display: flex;
  align-items: center;
  gap: .45rem;
}
body[data-page="post"] .src-block h2.src-toggle { cursor: pointer; }
body[data-page="post"] .src-block h2.src-toggle::after {
  content: "";
  width: .42rem;
  height: .42rem;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  transition: transform .18s ease;
}
body[data-page="post"] .src-block.is-collapsed h2.src-toggle::after {
  transform: rotate(-135deg) translateY(-1px);
}
body[data-page="post"] .src-block h2.src-toggle:focus-visible {
  outline: 2px solid var(--post-accent);
  outline-offset: 3px;
  border-radius: .2rem;
}

body[data-page="post"] .src-block > ul {
  margin: 0 !important;
  padding: 0 !important;
  list-style: none;
  counter-reset: ref;
  font-size: .86rem !important;
  line-height: 1.7 !important;
  color: var(--post-muted);
}
body[data-page="post"] .src-block li {
  position: relative;
  counter-increment: ref;
  padding: .5rem 0 .5rem 2rem;
  border-top: 1px solid var(--post-line);
}
body[data-page="post"] .src-block li:first-child { border-top: 0; padding-top: .1rem; }
body[data-page="post"] .src-block li::before {
  content: "[" counter(ref) "]";
  position: absolute;
  left: 0;
  top: .6rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--post-muted);
  opacity: .85;
}
body[data-page="post"] .src-block li:first-child::before { top: .2rem; }
body[data-page="post"] .src-block a {
  color: var(--post-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--post-line);
  transition: color .15s ease, border-color .15s ease;
}
body[data-page="post"] .src-block a:hover {
  color: var(--post-accent);
  border-bottom-color: currentColor;
}
body[data-page="post"] .src-block.is-collapsed > ul { display: none; }

/* ── 9. 关键词 + 相关阅读 ──────────────────────────────────── */
body[data-page="post"] .post-main > div.related.kwrow {
  margin: 1.9rem 0 0;
  padding: 1.4rem 0 0;
  border: 0;
  border-top: 1px solid var(--post-line);
  border-radius: 0;
  background: none;
}
body[data-page="post"] .related.kwrow .rhead {
  margin: 0 0 .75rem;
  padding: 0;
  border: 0;
}
body[data-page="post"] .related.kwrow ul {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
body[data-page="post"] .related.kwrow .kw {
  padding: .26rem .7rem;
  border: 1px solid var(--post-line);
  border-radius: 999px;
  background: var(--post-card);
  color: var(--post-ink);
  font-size: .82rem;
  text-decoration: none;
}
body[data-page="post"] .related.kwrow .kw:hover {
  color: var(--post-accent);
  border-color: currentColor;
}
body[data-page="post"] .related.kwrow .kw-solo {
  padding: .26rem .7rem;
  border: 1px dashed var(--post-line);
  border-radius: 999px;
  color: var(--post-muted);
  font-size: .82rem;
}

/* JS 注入的相关阅读（div.related.sem），锚点是 section.discuss[data-slug] */
body[data-page="post"] .post-main > div.related.sem {
  margin: 1.9rem 0 0;
  padding: 1.4rem 0 0;
  border-top: 1px solid var(--post-line);
}
body[data-page="post"] .related.sem .rhead { margin: 0 0 .6rem; }
body[data-page="post"] .related.sem ul {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: rel;
}
body[data-page="post"] .related.sem li {
  position: relative;
  counter-increment: rel;
  padding: .5rem 0 .5rem 1.7rem;
  border-top: 1px solid var(--post-line);
}
body[data-page="post"] .related.sem li:first-child { border-top: 0; padding-top: .1rem; }
body[data-page="post"] .related.sem li::before {
  content: counter(rel, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .62rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--post-muted);
  opacity: .8;
}
body[data-page="post"] .related.sem li:first-child::before { top: .22rem; }
body[data-page="post"] .related.sem a {
  color: var(--post-ink);
  font-size: .98rem;
  font-weight: 600;
  line-height: 1.6;
  text-decoration: none;
}
body[data-page="post"] .related.sem a:hover {
  color: var(--post-accent);
  text-decoration: underline;
  text-underline-offset: .16em;
}

/* 栏目标签块：站上早已隐藏（生成器仍输出该槽位，保留 DOM 不动） */
body[data-page="post"] .post-main > div.tags { display: none; }

/* ── 10. 评论区 ────────────────────────────────────────────── */
/* 生成器在 section 里内联了一段 <style>（.discuss 系列），
   这里用更高特异度覆盖，不改那段标记。 */
body[data-page="post"] .post-main > section.discuss {
  margin: 2.4rem 0 0;
  padding: 1.5rem 0 0;
  border: 0;
  border-top: 1px solid var(--post-line);
  border-radius: 0;
  background: none;
}
body[data-page="post"] .discuss .discuss-title {
  margin: 0 0 .9rem;
  font-size: .78rem;
  line-height: 1.6;
}
body[data-page="post"] .discuss-empty,
body[data-page="post"] .discuss .c-note {
  margin: .4rem 0 1.1rem;
  color: var(--post-muted);
  font-size: .9rem;
  letter-spacing: normal;
  text-transform: none;
  font-weight: 400;
}
body[data-page="post"] .discuss-list { margin: 0 0 .4rem; }
body[data-page="post"] .discuss-item {
  padding: .9rem 0;
  border: 0;
  border-top: 1px solid var(--post-line);
  border-radius: 0;
  background: none;
}
body[data-page="post"] .discuss-item:first-child { border-top: 0; }
body[data-page="post"] .discuss-item .who {
  margin: 0 0 .3rem;
  font-size: .8rem;
  color: var(--post-muted);
}
body[data-page="post"] .discuss-item .who time { margin-left: .5rem; opacity: .8; }
body[data-page="post"] .discuss-item .what {
  font-size: .95rem;
  line-height: 1.8;
  color: var(--post-ink);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

body[data-page="post"] .discuss-form { margin: 1.1rem 0 0; gap: .55rem; }
body[data-page="post"] .discuss-nick,
body[data-page="post"] .discuss-body {
  width: 100%;
  max-width: 100%;
  padding: .6rem .75rem;
  border: 1px solid var(--post-line);
  border-radius: .55rem;
  background: var(--post-card);
  color: var(--post-ink);
  font: inherit;
  font-size: .95rem;
  transition: border-color .15s ease;
}
body[data-page="post"] .discuss-nick { max-width: 17rem; }
body[data-page="post"] .discuss-body { min-height: 5rem; line-height: 1.75; resize: vertical; }
body[data-page="post"] .discuss-nick:focus,
body[data-page="post"] .discuss-body:focus {
  outline: none;
  border-color: var(--post-accent);
  box-shadow: 0 0 0 3px var(--post-accent-soft);
}
body[data-page="post"] .discuss-submit {
  align-self: flex-start;
  min-height: 2.6rem;
  padding: .55rem 1.5rem;
  border: 0;
  border-radius: .55rem;
  background: var(--post-accent);
  color: var(--accent-ink, #fff);
  font: inherit;
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s ease;
}
body[data-page="post"] .discuss-submit:hover { opacity: .9; }
body[data-page="post"] .discuss-hp,
body[data-page="post"] .c-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}
body[data-page="post"] .discuss-msg {
  margin: .1rem 0 0;
  font-size: .84rem;
  color: var(--post-muted);
}

/* 旧评论骨架（#c-list / .c-*）：站上已换 discuss-*，这里保留同款外观，
   钩子类名一个没删，将来回切也不会裸奔。 */
body[data-page="post"] #c-list { margin: 0 0 .4rem; }
body[data-page="post"] .c-item {
  padding: .9rem 0;
  border: 0;
  border-top: 1px solid var(--post-line);
  border-radius: 0;
  background: none;
}
body[data-page="post"] .c-head { font-size: .8rem; color: var(--post-muted); margin: 0 0 .3rem; }
body[data-page="post"] .c-body { font-size: .95rem; line-height: 1.8; white-space: pre-wrap; }
body[data-page="post"] .c-form input[type=text],
body[data-page="post"] .c-form textarea {
  background: var(--post-card);
  border: 1px solid var(--post-line);
  border-radius: .55rem;
}
body[data-page="post"] .c-form button { border-radius: .55rem; font-weight: 600; }
body[data-page="post"] .c-msg { font-size: .84rem; color: var(--post-muted); }
body[data-page="post"] .c-report {
  font-size: .78rem;
  color: var(--post-muted);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: .15em;
}
body[data-page="post"] .c-link { margin-top: .6rem; font-size: .86rem; }
body[data-page="post"] .c-link a { color: var(--post-accent); font-weight: 600; text-decoration: none; }

/* ── 11. 页脚与浮动件 ──────────────────────────────────────── */
body[data-page="post"] .wrap > footer {
  max-width: var(--post-measure);
  margin: 2.6rem auto 0;
  padding: 1.2rem 0 0;
  border: 0;
  border-top: 1px solid var(--post-line);
  border-radius: 0;
  background: none;
}
/* 桌面：页脚左边缘要和正文栏对齐（.wrap 比 .post-main 宽，居中会错开半条缝隙） */
@media (min-width: 1100px) {
  body[data-page="post"] .wrap > footer {
    margin-left: calc((100% - (var(--post-measure) + var(--post-rail) + var(--post-gap))) / 2);
    margin-right: auto;
  }
}
body[data-page="post"] .read-progress { height: 2px; }
body[data-page="post"] .back-top-float { border-radius: .7rem 0 0 .7rem; }

/* ── 12. 桌面：右栏目录 ────────────────────────────────────── */
@media (min-width: 1100px) {
  body[data-page="post"] .post-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--post-rail);
    grid-template-rows: auto;
    column-gap: var(--post-gap);
    align-items: start;
    max-width: calc(var(--post-measure) + var(--post-rail) + var(--post-gap));
  }
  body[data-page="post"] .post-head {
    grid-column: 1;
    grid-row: 1;
  }
  /* 其余内容一律落回正文栏（顺序不变，只是不再占满整行） */
  body[data-page="post"] .post-main > .hero,
  body[data-page="post"] .post-main > .post-body,
  body[data-page="post"] .post-main > section.src-block,
  body[data-page="post"] .post-main > div.related,
  body[data-page="post"] .post-main > div.tags,
  body[data-page="post"] .post-main > section.discuss {
    grid-column: 1;
  }

  body[data-page="post"] .toc-post {
    grid-column: 2;
    grid-row: 1 / -1;
    position: sticky;
    top: 1.25rem;
    align-self: start;
    margin: 0;
    padding: 0 0 0 1.1rem;
    border: 0;
    border-left: 1px solid var(--post-line);
    border-radius: 0;
    background: none;
    transition: top .28s ease;
  }
  /* 站头可见时让开（站头高约 9.9rem @16px，随字号缩放）；站头收起时贴顶 */
  body[data-page="post"]:not(.hdr-hide) .toc-post { top: 10.5rem; }

  body[data-page="post"] .toc-title {
    cursor: default;
    padding: 0;
    min-height: 0;
    margin: 0 0 .6rem;
  }
  body[data-page="post"] .toc-chev { display: none; }
  body[data-page="post"] .toc-post ol {
    display: block;
    margin: 0;
    padding: 0;
    border-top: 0;
  }
  body[data-page="post"] .toc-post li a {
    padding: .32rem 0;
    font-size: .84rem;
  }
}

/* ── 13. 窄屏 ──────────────────────────────────────────────── */
@media (max-width: 600px) {
  body[data-page="post"] .post-head { padding-bottom: 1.05rem; margin-bottom: 1.25rem; }
  body[data-page="post"] .post-body { font-size: 1.005rem; line-height: 1.92; }
  body[data-page="post"] .post-body h2 { font-size: 1.08rem; margin-top: 2.1rem; }
  body[data-page="post"] .hero img { border-radius: 10px !important; }
  body[data-page="post"] .discuss-nick { max-width: 100%; }
  body[data-page="post"] .discuss-body { min-height: 6rem; resize: none; }  /* 手机上的拖拽手柄只会误触 */
  body[data-page="post"] .discuss-submit { width: 100%; min-height: 2.9rem; }
}

@media (max-width: 380px) {
  body[data-page="post"] h1.art { font-size: 1.42rem; }
  body[data-page="post"] .art-meta { font-size: .75rem; }
  body[data-page="post"] .post-body { font-size: 1rem; letter-spacing: .008em; }
  body[data-page="post"] .post-body h2::before { min-width: 1.35rem; margin-right: .3rem; }
}

/* ── 14. 打印：只留标题、正文、来源 ────────────────────────── */
@media print {
  body[data-page="post"] .toc-post,
  body[data-page="post"] .discuss,
  body[data-page="post"] .back-top,
  body[data-page="post"] .read-progress,
  body[data-page="post"] .related.sem,
  body[data-page="post"] .kwrow { display: none !important; }
  body[data-page="post"] .post-main { display: block; max-width: none; }
  body[data-page="post"] .post-body { font-size: 11pt; line-height: 1.7; }
}

/* ── 15. 动效收敛 ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  body[data-page="post"] .toc-post,
  body[data-page="post"] .toc-chev,
  body[data-page="post"] .src-block h2.src-toggle::after { transition: none; }
}


/* ── 16. 答案段（AEO 2026-11-06）──────────────────────────────
   AI 摘要优先吃正文第一段；这里只做视觉区分，不改字号与行高，
   免得和「正文首段」的排版规则打架。 */
body[data-page="post"] .post-body p.art-answer {
  font-size: 1.04em;
  line-height: 1.75;
  color: var(--fg, #1a1a1a);
  border-left: 3px solid var(--accent, #c0392b);
  padding: .1rem 0 .1rem .9rem;
  margin: 0 0 1.3rem;
  background: color-mix(in srgb, var(--accent, #c0392b) 4%, transparent);
}
html[data-theme="dark"] body[data-page="post"] .post-body p.art-answer {
  border-left-color: var(--accent, #ff6b5e);
  background: color-mix(in srgb, var(--accent, #ff6b5e) 8%, transparent);
}