/* post.css — 文章详情页：正文排版、封面、目录、阅读进度、评论区。 */

/* 文章卡片 */
.article-card {
  margin-bottom: 30px;
  align-items: flex-start;
  border-left: 4px solid var(--accent-color);
  cursor: default;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

.article-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

.article-title {
  font-size: 1.5rem;
  margin: 0 0 10px 0;
  color: var(--text-primary);
}

.article-excerpt {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

@media (max-width: 768px) {

  .article-title {
    font-size: 1.3rem;
  }
}

/* 正文排版 */
.post-content,
.article-content {
  max-width: 860px;
  margin: 40px auto;
  line-height: 1.8;
  font-size: 1.1rem;
  color: var(--text-primary);
  padding: 40px;
  cursor: default;
  transform: none;
  box-shadow: none;
  border: 1px solid var(--border-color);
}

.post-content pre,
.article-content pre {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  padding: 18px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 24px 0;
}

.post-content code,
.article-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #d63384;
}

.post-content:hover,
.article-content:hover {
  transform: none;
  box-shadow: none;
}

.post-content h2,
.article-content h2 {
  font-size: 1.5rem;
  margin-top: 30px;
  margin-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

.post-content blockquote,
.article-content blockquote {
  border-left: 4px solid var(--accent-color);
  margin: 20px 0;
  padding-left: 20px;
  color: var(--text-secondary);
  color: var(--text-secondary);
  background: rgba(128, 128, 128, 0.05);
  padding: 15px;
  border-radius: 0 8px 8px 0;
}

.post-content img,
.article-content img {
  width: 100%;
  border-radius: 12px;
  margin: 20px 0;
}

@media (max-width: 768px) {

  .article-content {
    padding: 20px;
    font-size: 1rem;
  }
}

/* --- 博客封面图 --- */

.article-card {
  padding: 0;
  overflow: hidden;
  border-left: none;
  flex-direction: column;
}

.article-cover {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.article-body {
  padding: 30px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card:hover .article-cover img {
  transform: scale(1.05);
}

@media (max-width: 768px) {

  .article-cover {
    height: 180px;
  }
  .article-body {
    padding: 20px;
  }
}

/* Article reading experience */
.reading-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1100;
  height: 3px;
  background: transparent;
}

.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--accent-color);
  transition: width 80ms linear;
}

.article-page {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 88px 0 100px;
}

.article-hero {
  max-width: 900px;
  margin: 0 auto 54px;
  padding: 0 0 36px;
  border-bottom: 1px solid var(--border-color);
}

.article-back {
  display: inline-flex;
  margin-bottom: 46px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: .9rem;
}

.article-back:hover { color: var(--accent-color); }

.article-hero-cover {
  position: relative;
  display: block;
  width: 100%;
  max-height: 460px;
  aspect-ratio: 2.55 / 1;
  margin: 0 0 42px;
  border: 1px solid var(--border-color);
  border-radius: 22px;
  background: var(--card-bg);
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  outline-offset: 4px;
}

.article-hero-cover.is-dragging-cover { cursor: grabbing; }

.article-hero-cover[hidden] { display: none; }

.article-hero-cover-backdrop {
  position: absolute;
  inset: -24px;
  background-position: center;
  background-size: cover;
  filter: blur(24px) brightness(.48);
  transform: scale(1.08);
}

.article-hero-cover img {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  user-select: none;
  -webkit-user-drag: none;
}

.article-cover-hint {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 1;
  padding: 7px 11px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  background: rgba(0,0,0,.52);
  color: #fff;
  font-size: .75rem;
  pointer-events: none;
}

.article-hero h1 {
  max-width: 850px;
  margin: 0;
  color: var(--text-primary);
  font-family: Georgia, "Songti SC", "Noto Serif SC", serif;
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  line-height: 1.16;
  letter-spacing: -.045em;
  overflow-wrap: anywhere;
}

.article-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  color: var(--text-secondary);
  font-size: .88rem;
}

.article-meta-dot { opacity: .55; }

.article-tag-list { display: inline-flex; flex-wrap: wrap; gap: 7px; }

.article-tag {
  padding: 4px 10px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: .76rem;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 740px) 220px;
  justify-content: center;
  gap: 64px;
  align-items: start;
}

.article-main { min-width: 0; grid-column: 1; grid-row: 1; }

.article-toc {
  position: sticky;
  top: 96px;
  grid-column: 2;
  grid-row: 1;
  max-height: calc(100vh - 120px);
  overflow: auto;
  padding: 18px 0 18px 18px;
  border-left: 1px solid var(--border-color);
}

.article-toc[hidden] { display: none; }

/* 正文还在加载时目录是空的，但它这时候已经是一个带背景和边框的圆角框了——
   会在正文左侧闪出一个空方块。:empty 让它在填进内容之前完全不渲染。 */
.article-toc:empty { display: none; }

.article-toc-title { margin-bottom: 12px; color: var(--text-primary); font-size: .82rem; font-weight: 700; }

.article-toc-list { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }

.article-toc-item a { color: var(--text-secondary); font-size: .78rem; line-height: 1.5; text-decoration: none; transition: color 160ms ease; }

.article-toc-item a:hover { color: var(--accent-color); }

/* 滚动到当前章节时由 post.js 的 initTOCScrollSpy 打上 is-active */
.article-toc-item a.is-active { color: var(--accent-color); font-weight: 600; }

.article-toc-item--sub { padding-left: 12px; }

.post-content {
  color: var(--text-primary);
  font-size: 1.08rem;
  line-height: 1.95;
  overflow-wrap: anywhere;
}

.post-content > :first-child { margin-top: 0; }

.post-content p { margin: 0 0 1.45em; color: var(--text-primary); }

.post-content h2, .post-content h3, .post-content h4 {
  scroll-margin-top: 90px;
  color: var(--text-primary);
  font-family: Georgia, "Songti SC", "Noto Serif SC", serif;
  line-height: 1.4;
}

.post-content h2 { margin: 2.5em 0 .8em; padding-bottom: .35em; border-bottom: 1px solid var(--border-color); font-size: 1.8rem; }

.post-content h3 { margin: 2em 0 .65em; font-size: 1.35rem; }

.post-content h4 { margin: 1.8em 0 .6em; font-size: 1.12rem; }

.post-content a { color: var(--accent-color); text-underline-offset: 3px; }

.post-content img { display: block; max-width: 100%; height: auto; margin: 2em auto; border-radius: 16px; }

.post-content blockquote { margin: 1.8em 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--accent-color); color: var(--text-secondary); }

.post-content blockquote p:last-child { margin-bottom: 0; color: inherit; }

.post-content ul, .post-content ol { margin: 0 0 1.5em; padding-left: 1.5em; }

.post-content li { padding-left: .25em; margin: .35em 0; }

.post-content pre { --code-pad-top: 22px; margin: 1.8em 0; padding: var(--code-pad-top) 24px; overflow: auto; border: 1px solid var(--border-color); border-radius: 14px; background: rgba(127, 127, 127, .12); font-size: .88rem; line-height: 1.7; }

/* 代码块行号（post.js 的 renderCodeLines 渲染）。
   结构是「每行一个 .code-line，内部两列 grid」：行号占第一列、代码占第二列。
   代码折行时只撑高它自己那一格，行号仍停在该行的第一行位置——「永远显示行号」
   与「长行软换行」能同时成立，全靠这个结构。

   别再改回"整列数字塞进一个伪元素"的写法：那种做法假设一个逻辑行等于一个视觉行，
   某行一折行，后面的数字就全部错位。 */
.post-content pre .code-line { display: grid; grid-template-columns: auto 1fr; column-gap: 1.1em; }

.post-content pre .code-line-no {
  text-align: right;
  color: var(--text-secondary);
  opacity: .45;
  user-select: none;
  -webkit-user-select: none;
}

/* pre-wrap 才能保住行首缩进，同时允许长行折断。
   overflow-wrap 用 break-word 而不是 anywhere：只在"整个词放不下"时才断，
   正常能换行的位置仍按空格断，长 URL / 无空格长串也不会把块撑破。 */
.post-content pre .code-line-text { white-space: pre-wrap; overflow-wrap: break-word; min-width: 0; }

.post-content code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }

.post-content :not(pre) > code { padding: .15em .4em; border-radius: 5px; background: rgba(127, 127, 127, .16); font-size: .88em; }

.post-content table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; margin: 1.8em 0; font-size: .94rem; }

.post-content th, .post-content td { padding: 10px 14px; border: 1px solid var(--border-color); text-align: left; }

.post-content th { background: rgba(127, 127, 127, .12); }

#article-comments { margin-top: 72px; padding-top: 28px; border-top: 1px solid var(--border-color); }

.comments-title { margin-bottom: 20px; color: var(--text-primary); font-size: 1.2rem; font-weight: 700; }

.comments-count { margin-left: 8px; color: var(--text-secondary); font-size: .82rem; font-weight: 500; }

.comment-form { position: relative; display: grid; gap: 9px; margin-bottom: 34px; }

.comment-label { color: var(--text-secondary); font-size: .8rem; font-weight: 600; }

.comment-form .comment-nickname,
.comment-form .comment-content {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border-color);
  border-radius: 11px;
  background: color-mix(in srgb, var(--bg-color), var(--card-bg) 45%);
  color: var(--text-primary);
  font: inherit;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.comment-form .comment-nickname { min-height: 44px; padding: 0 13px; }

.comment-form .comment-content { min-height: 112px; padding: 13px 14px; resize: vertical; line-height: 1.75; }

.comment-form .comment-nickname:focus,
.comment-form .comment-content:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent-color), transparent 25%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-color), transparent 88%);
}

.comment-form .comment-nickname::placeholder,
.comment-form .comment-content::placeholder { color: var(--text-secondary); opacity: .65; }

/* 蜜罐字段：真人看不到，只用来识别自动提交的脚本 */
.comment-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.comment-form-footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 2px; }

.comment-status { color: var(--text-secondary); font-size: .84rem; }

.comment-status.is-error { color: #e0533f; }

[data-theme="light"] .comment-status.is-error { color: #b3261e; }

.comment-submit {
  flex: none;
  padding: 11px 22px;
  border: none;
  border-radius: 999px;
  background: var(--accent-color);
  color: #06121c;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  transition: transform .18s ease, opacity .18s ease;
}

.comment-submit:hover { transform: translateY(-1px); }

.comment-submit:disabled { opacity: .55; cursor: progress; transform: none; }

.comment-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }

.comment-item { padding: 15px 17px; border: 1px solid var(--border-color); border-radius: 13px; background: var(--card-bg); }

.comment-item-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 7px; }

.comment-item-name { color: var(--text-primary); font-size: .9rem; font-weight: 700; }

.comment-item-time { color: var(--text-secondary); font-size: .75rem; }

.comment-item-body { margin: 0; color: var(--text-primary); font-size: .95rem; line-height: 1.78; overflow-wrap: anywhere; }

.comment-md-line { margin: 0; }

.comment-md-blank { height: .85em; }

.comment-md-quote { padding-left: 11px; border-left: 2px solid color-mix(in srgb, var(--accent-color), transparent 55%); color: var(--text-secondary); }

.comment-md-strong { font-weight: 700; }

.comment-md-em { font-style: italic; }

.comment-md-code { padding: 1px 5px; border-radius: 5px; background: color-mix(in srgb, var(--text-primary), transparent 92%); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em; }

.comment-md-link { color: var(--accent-color); text-decoration: underline; text-underline-offset: 2px; overflow-wrap: anywhere; }

.comment-sort { display: flex; width: fit-content; gap: 3px; margin: 0 0 16px; padding: 3px; border: 1px solid var(--border-color); border-radius: 999px; background: var(--card-bg); }

.comment-sort-btn { padding: 4px 12px; border: 0; border-radius: 999px; background: transparent; color: var(--text-secondary); font-family: inherit; font-size: .78rem; line-height: 1.4; cursor: pointer; transition: background-color .18s ease, color .18s ease; }

.comment-sort-btn:hover { color: var(--text-primary); }

.comment-sort-btn.is-active { background: color-mix(in srgb, var(--accent-color), transparent 88%); color: var(--accent-color); font-weight: 700; }

.comment-item--reply { margin-left: 26px; border-left: 2px solid color-mix(in srgb, var(--accent-color), transparent 68%); }

.comment-item-replyto { margin-left: 2px; color: var(--accent-color); font-size: .76rem; font-weight: 600; }

.comment-reply-btn { margin-left: auto; padding: 4px 8px; border: 0; border-radius: 8px; background: transparent; color: var(--text-secondary); font-family: inherit; font-size: .76rem; line-height: 1.4; cursor: pointer; transition: background-color .16s ease, color .16s ease; }

.comment-reply-btn:hover { background: color-mix(in srgb, var(--accent-color), transparent 92%); color: var(--accent-color); }

.comment-replying { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 6px 11px; border: 1px dashed color-mix(in srgb, var(--accent-color), transparent 58%); border-radius: 10px; background: color-mix(in srgb, var(--accent-color), transparent 94%); color: var(--text-secondary); font-size: .78rem; }

.comment-replying[hidden] { display: none; }

.comment-replying-cancel { border: 0; background: transparent; color: var(--accent-color); font-family: inherit; font-size: .76rem; cursor: pointer; }

@media (max-width: 850px) {

  .comment-item--reply { margin-left: 12px; }
}

.comment-item--notice { color: var(--text-secondary); font-size: .88rem; background: transparent; border-style: dashed; }

.comment-reactions { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 11px; }

.comment-reaction { display: inline-flex; align-items: center; min-height: 28px; padding: 2px 10px; border: 1px solid var(--border-color); border-radius: 999px; background: transparent; color: var(--text-secondary); font-family: inherit; font-size: .8rem; line-height: 1; cursor: pointer; transition: transform .16s ease, border-color .16s ease, background-color .16s ease; }

.comment-reaction:hover { border-color: color-mix(in srgb, var(--accent-color), transparent 55%); background: color-mix(in srgb, var(--accent-color), transparent 92%); transform: translateY(-1px); }

.comment-reaction.is-tapped { border-color: color-mix(in srgb, var(--accent-color), transparent 52%); background: color-mix(in srgb, var(--accent-color), transparent 88%); color: var(--accent-color); font-weight: 700; }

.comment-reaction.is-busy { opacity: .55; cursor: progress; }

@media (max-width: 850px) {

  .comment-form-footer { flex-direction: column; align-items: stretch; gap: 10px; }
  .comment-submit { width: 100%; }
}

@media (max-width: 850px) {

  .article-page { width: min(740px, calc(100% - 36px)); padding-top: 58px; }
  .article-hero { margin-bottom: 36px; }
  .article-back { margin-bottom: 32px; }
  .article-layout { display: flex; flex-direction: column; gap: 28px; }
  .article-toc { position: static; order: 0; width: 100%; max-height: none; padding: 14px 16px; border: 1px solid var(--border-color); border-radius: 12px; }
  .article-main { width: 100%; }
  .post-content { font-size: 1rem; line-height: 1.9; }
}

@media (max-width: 520px) {

  .article-page { width: calc(100% - 32px); padding: 42px 0 70px; }
  .article-hero h1 { font-size: clamp(2rem, 10vw, 3rem); }
  .article-meta-row { gap: 8px; font-size: .8rem; }
  .post-content h2 { font-size: 1.55rem; }
  .post-content h3 { font-size: 1.22rem; }
  .post-content pre { --code-pad-top: 16px; padding: var(--code-pad-top) 16px; border-radius: 10px; font-size: .8rem; }
  .article-hero-cover { max-height: 300px; margin-bottom: 30px; border-radius: 15px; }
}

/* Final article layout overrides: keep the reading column balanced with the title. */
.article-page { width: min(1240px, calc(100% - 48px)); }

.article-hero { max-width: 1080px; }

.article-layout {
  display: block;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0;
}

.article-main {
  display: block;
  width: 100%;
  max-width: none;
  margin: 0;
  clear: both;
}

.article-layout .post-content {
  width: 100%;
  max-width: none;
  margin: 0;
}

.article-toc {
  float: none;
  position: static;
  width: 100%;
  max-width: none;
  max-height: none;
  margin: 0 0 34px;
  padding: 16px 20px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  background: var(--card-bg);
}

.article-toc-list { display: flex; flex-flow: row wrap; gap: 5px 12px; }

.article-toc-item--sub { padding-left: 0; }

#article-comments { width: 100%; max-width: none; }

@media (max-width: 850px) {

  .article-page { width: min(740px, calc(100% - 36px)); }
  .article-layout { padding: 0; }
}

@media (max-width: 520px) {

  .article-page { width: calc(100% - 32px); }
}

/* 文章目录 + 侧边栏布局
   ──────────────────────────────────────────────────────────────────
   目录有两种摆放形态，按窗口宽度二选一：
     · ≥1440px —— 挂进正文左侧的沟槽（float + 负边距 + sticky）
     · <1440px —— 正文上方的横向标签式目录

   为什么必须分档：沟槽版靠 `margin-left: calc(-200px - 48px)` 把自己拉出正文列，
   窗口不够宽时沟槽放不下这 248px，目录就会被推到屏幕左边外面。实测：
   1440 起左边缘才有 32px 余量，1399 只剩 12px，1280 被切 48px、1000 只剩 12px 可见，
   ≤900 完全不可见（手机上目录一直是空白的就是这个原因）。

   以前这里把沟槽版写在文件末尾、且不带媒体查询，源顺序上盖掉了前面所有窄屏规则
   （媒体查询不会降低优先级，同特异性比的是源顺序）——所以窄屏规则写了等于没写。 */
.article-layout {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 两种形态共用的外观 */
.article-toc {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 22px 20px;
  font-size: 0.9rem;
}

.article-toc-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.article-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

@media (min-width: 1440px) {

  /* 沟槽版：左侧外面，随滚动吸顶 */
  .article-toc {
    float: left;
    position: sticky;
    top: 90px;
    width: 200px;
    margin-left: calc(-200px - 48px);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }
}

@media (max-width: 1439.98px) {

  /* 窄窗口版：正文上方的横向标签，不再往侧边挤 */
  .article-toc {
    float: none;
    position: static;
    width: 100%;
    max-width: none;
    max-height: none;
    margin: 0 0 28px;
  }

  .article-toc-list {
    flex-flow: row wrap;
    gap: 5px 12px;
  }
}

.article-toc-item a {
  display: block;
  padding: 5px 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  border-radius: 5px;
  transition: all 0.15s;
}

.article-toc-item a:hover {
  color: var(--accent-color);
  background: rgba(128, 128, 128, 0.05);
}

.article-toc-item--sub a {
  padding-left: 22px;
  font-size: 0.82rem;
}

/* 文章主体 */
.article-main {
  flex: 1;
  min-width: 0;
  clear: none;
}

.article-layout .post-content {
  max-width: none;
  margin: 0;
  border: none;
}

/* 评论区 */
#article-comments {
  max-width: none;
  margin: 60px 0 0;
}

@media (max-width: 900px) {

  .article-layout {
    flex-direction: column;
    gap: 20px;
    padding: 0 12px;
  }
  .article-toc {
    position: static;
    width: auto;
    max-height: none;
    padding: 16px 18px;
  }
}

.comments-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.blog-page .article-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 700px) {

  .blog-page .article-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }
}
/* --- 系列导航（article-series，post.js initSeriesNav 注入；系列定义在 series.js）---
   放在正文之前：要解决的就是"读者进来时不知道还有前后文"，藏到文末等于没做。 */
.article-series { margin: 0 0 30px; padding: 18px 20px; border: 1px solid var(--border-color); border-left: 3px solid var(--accent-color); border-radius: 14px; background: color-mix(in srgb, var(--card-bg), transparent 35%); }
.article-series-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 9px; margin-bottom: 13px; }
.article-series-label { padding: 2px 8px; border-radius: 20px; background: color-mix(in srgb, var(--accent-color), transparent 82%); color: var(--accent-color); font-size: .72rem; font-weight: 600; letter-spacing: .06em; }
.article-series-name { color: var(--text-primary); font-size: .95rem; font-weight: 600; text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent-color), transparent 55%); }
.article-series-name:hover { color: var(--accent-color); }
.article-series-count { color: var(--text-secondary); font-size: .78rem; font-variant-numeric: tabular-nums; }
.article-series-list { display: flex; flex-direction: column; gap: 2px; margin: 0; padding: 0; list-style: none; counter-reset: none; }
.article-series-item { display: flex; align-items: baseline; gap: 10px; padding: 5px 0; font-size: .9rem; }
.article-series-index { flex: none; width: 1.8em; color: var(--text-secondary); font-size: .76rem; font-variant-numeric: tabular-nums; opacity: .7; }
.article-series-link { color: var(--text-secondary); text-decoration: none; }
.article-series-link:hover { color: var(--accent-color); }
.article-series-here { color: var(--text-primary); font-weight: 600; }

/* --- 上一篇/下一篇导航（article-neighbors，post.js renderNeighbors 注入）--- */
.article-neighbors { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 44px; }
.article-neighbor { display: flex; flex-direction: column; gap: 5px; min-width: 0; padding: 14px 16px; border: 1px solid var(--border-color); border-radius: 14px; background: color-mix(in srgb, var(--card-bg), transparent 35%); color: var(--text-primary); text-decoration: none; transition: border-color .18s ease, transform .18s ease; }
.article-neighbor:hover { border-color: color-mix(in srgb, var(--accent-color), transparent 45%); transform: translateY(-2px); }
.article-neighbor--newer { text-align: right; align-items: flex-end; }
.article-neighbor-label { color: var(--text-secondary); font-size: .78rem; }
.article-neighbor-title { font-size: .92rem; font-weight: 600; line-height: 1.5; }
@media (max-width: 700px) { .article-neighbors { grid-template-columns: 1fr; } .article-neighbor--newer { text-align: left; align-items: flex-start; } }

/* --- 文章级表情回应（article-reactions，post.js initArticleReactions 注入）--- */
.article-reactions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.article-reaction { display: inline-flex; align-items: center; min-height: 32px; padding: 3px 13px; border: 1px solid var(--border-color); border-radius: 999px; background: transparent; color: var(--text-secondary); font-family: inherit; font-size: .85rem; line-height: 1; cursor: pointer; transition: transform .16s ease, border-color .16s ease, background-color .16s ease; }
.article-reaction:hover { border-color: color-mix(in srgb, var(--accent-color), transparent 55%); background: color-mix(in srgb, var(--accent-color), transparent 92%); transform: translateY(-1px); }
.article-reaction.is-tapped { border-color: color-mix(in srgb, var(--accent-color), transparent 52%); background: color-mix(in srgb, var(--accent-color), transparent 88%); color: var(--accent-color); font-weight: 700; }
.article-reaction.is-busy { opacity: .55; cursor: progress; }

/* --- 相关阅读（article-related，post.js initRelatedPosts 注入；按共同标签推荐）--- */
.article-related { margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--border-color); }
.article-related-title { margin: 0 0 14px; font-size: .95rem; font-weight: 600; color: var(--text-primary); letter-spacing: .02em; }
.article-related-list { display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 0; list-style: none; }
.article-related-item { display: flex; flex-direction: column; gap: 5px; min-width: 0; padding: 13px 16px; border: 1px solid var(--border-color); border-radius: 14px; background: color-mix(in srgb, var(--card-bg), transparent 35%); transition: border-color .18s ease, transform .18s ease; }
.article-related-item:hover { border-color: color-mix(in srgb, var(--accent-color), transparent 45%); transform: translateY(-2px); }
.article-related-link { color: var(--text-primary); text-decoration: none; font-size: .93rem; font-weight: 600; line-height: 1.5; transition: color .16s ease; }
.article-related-link:hover { color: var(--accent-color); }
.article-related-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.article-related-date { color: var(--text-secondary); font-size: .78rem; font-variant-numeric: tabular-nums; }
.article-related-tags { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.article-related-tag { padding: 2px 9px; border: 1px solid var(--border-color); border-radius: 999px; color: var(--text-secondary); font-size: .72rem; }

/* --- 代码块复制按钮（post.js enhanceCodeBlocks 注入）+ 高亮底色让位给 pre --- */
.post-content pre { position: relative; }
.post-content pre code.hljs { background: transparent; padding: 0; }
.code-copy-btn { position: absolute; top: 10px; right: 10px; min-height: 26px; padding: 2px 10px; border: 1px solid var(--border-color); border-radius: 8px; background: color-mix(in srgb, var(--bg-color), transparent 20%); color: var(--text-secondary); font-family: inherit; font-size: .72rem; line-height: 1; opacity: 0; cursor: pointer; transition: opacity .16s ease, border-color .16s ease, color .16s ease; }
.post-content pre:hover .code-copy-btn, .code-copy-btn:focus-visible { opacity: 1; }
.code-copy-btn:hover { color: var(--text-primary); border-color: color-mix(in srgb, var(--accent-color), transparent 55%); }

/* --- 图片灯箱（post.js initLightbox 注入）--- */
.post-content img.lightboxable { cursor: zoom-in; }
.lightbox-overlay { position: fixed; inset: 0; z-index: 999; display: flex; align-items: center; justify-content: center; padding: 24px; background: rgba(0, 0, 0, .82); cursor: zoom-out; animation: lightbox-in .18s ease; }
.lightbox-overlay img { max-width: 100%; max-height: 100%; border-radius: 10px; }
html.lightbox-open { overflow: hidden; }
@keyframes lightbox-in { from { opacity: 0; } to { opacity: 1; } }

/* --- 404 页 --- */
.notfound-page { max-width: 640px; margin: 0 auto; padding: 140px 20px 80px; text-align: center; }
.notfound-code { margin: 0; font-size: 4.6rem; font-weight: 800; letter-spacing: .04em; line-height: 1; color: color-mix(in srgb, var(--accent-color), transparent 25%); }
.notfound-title { margin: 14px 0 10px; font-size: 1.5rem; color: var(--text-primary); }
.notfound-text { margin: 0 0 26px; color: var(--text-secondary); line-height: 1.8; }
.notfound-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.notfound-btn { display: inline-flex; align-items: center; min-height: 42px; padding: 0 22px; border-radius: 999px; background: var(--accent-color); color: #fff; text-decoration: none; font-weight: 600; transition: transform .16s ease, opacity .16s ease; }
.notfound-btn:hover { transform: translateY(-1px); opacity: .92; }
.notfound-btn--ghost { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); }

/* --- 页脚备注行（footer.js）--- */
.footer-note { margin-top: 6px; color: var(--text-secondary); font-size: .78rem; }

/* --- highlight.js 亮色覆盖：默认引 github-dark，亮色主题换 github 配色（pre 底色保持全站半透明灰）--- */
[data-theme="light"] .post-content .hljs { color: #24292e; }
[data-theme="light"] .post-content .hljs-doctag, [data-theme="light"] .post-content .hljs-keyword, [data-theme="light"] .post-content .hljs-meta .hljs-keyword, [data-theme="light"] .post-content .hljs-template-tag, [data-theme="light"] .post-content .hljs-template-variable, [data-theme="light"] .post-content .hljs-type, [data-theme="light"] .post-content .hljs-variable.constant_ { color: #d73a49; }
[data-theme="light"] .post-content .hljs-title, [data-theme="light"] .post-content .hljs-title.class_, [data-theme="light"] .post-content .hljs-title.class_.inherited__, [data-theme="light"] .post-content .hljs-title.function_ { color: #6f42c1; }
[data-theme="light"] .post-content .hljs-attr, [data-theme="light"] .post-content .hljs-attribute, [data-theme="light"] .post-content .hljs-literal, [data-theme="light"] .post-content .hljs-meta, [data-theme="light"] .post-content .hljs-number, [data-theme="light"] .post-content .hljs-operator, [data-theme="light"] .post-content .hljs-selector-attr, [data-theme="light"] .post-content .hljs-selector-class, [data-theme="light"] .post-content .hljs-selector-id, [data-theme="light"] .post-content .hljs-variable { color: #005cc5; }
[data-theme="light"] .post-content .hljs-string, [data-theme="light"] .post-content .hljs-regexp { color: #032f62; }
[data-theme="light"] .post-content .hljs-built_in, [data-theme="light"] .post-content .hljs-symbol { color: #e36209; }
[data-theme="light"] .post-content .hljs-code, [data-theme="light"] .post-content .hljs-comment, [data-theme="light"] .post-content .hljs-formula { color: #6a737d; }
[data-theme="light"] .post-content .hljs-name, [data-theme="light"] .post-content .hljs-quote, [data-theme="light"] .post-content .hljs-selector-tag, [data-theme="light"] .post-content .hljs-selector-pseudo, [data-theme="light"] .post-content .hljs-tag { color: #22863a; }
[data-theme="light"] .post-content .hljs-meta .hljs-string, [data-theme="light"] .post-content .hljs-section { color: #005cc5; }
[data-theme="light"] .post-content .hljs-bullet { color: #735c0f; }
[data-theme="light"] .post-content .hljs-emphasis { font-style: italic; }
[data-theme="light"] .post-content .hljs-strong { font-weight: 700; }
[data-theme="light"] .post-content .hljs-addition { color: #22863a; background-color: #f0fff4; }
[data-theme="light"] .post-content .hljs-deletion { color: #b31d28; background-color: #ffeef0; }

/* hidden 属性必须真正隐藏（上面两条 display 规则会盖过 UA 样式的 [hidden]）*/
.article-neighbors[hidden], .article-reactions[hidden], .article-related[hidden], .article-series[hidden] { display: none; }

/* =========================================
   正文元素滚动渐入
   类由 post.js 的 initContentReveal 打上，且只在允许动效时才打。
   只用 opacity + transform，不碰任何布局属性，避免累积布局偏移（CLS）。
   ========================================= */
.content-reveal {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 420ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.content-reveal.is-revealed {
  opacity: 1;
  transform: none;
}

/* =========================================
   减少动效偏好（文章页）
   中和位移/缩放类动效，保留颜色与透明度反馈——
   颜色变化不是前庭触发源，砍掉反而损失交互反馈。
   ========================================= */
@media (prefers-reduced-motion: reduce) {

  /* 阅读进度条：宽度变化本身就是"移动的几何"，改成跳变 */
  .reading-progress span {
    transition: none;
  }

  /* 封面拖动定位 */
  .post-cover {
    transition: none !important;
  }

  .comment-submit,
  .comment-reaction,
  .article-neighbor,
  .article-reaction,
  .article-related-item,
  .notfound-btn {
    transition: none !important;
  }

  /* 悬停不再位移——注意要连同 transform 一起中和，
     只取消 transition 会让元素瞬间"跳"过去，比动画更难受。 */
  .comment-submit:hover,
  .comment-reaction:hover,
  .article-neighbor:hover,
  .article-reaction:hover,
  .article-related-item:hover,
  .notfound-btn:hover {
    transform: none;
  }

  /* 文章封面悬停缩放 */
  .article-card:hover .article-cover img {
    transform: none;
  }

  /* 灯箱淡入 */
  .lightbox-overlay {
    animation: none;
  }

  /* 双保险：.content-reveal 本来就只在允许动效时才会被 post.js 打上 */
  .content-reveal,
  .content-reveal.is-revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }
}