:root {
  --bg: #ffffff;
  --fg: #0f1419;
  --muted: #536471;
  --muted-2: #7a8b98;
  --border: #e9eef2;
  --border-strong: #d3dce2;
  --link: #1d9bf0;
  --card: #f7f9fa;
  --card-hover: #f0f4f6;
  --star: #f5a524;
  --ok: #0f7b45;
  --ok-soft: #e8f5ee;
  --radius: 14px;
  --pad-x: 20px;
  --header-h: 56px;
}
* { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
/* 兜底：任何漏网的长串（网址、代码、表格）都不让整页横向滚动 */
body { overflow-x: clip; }
::selection { background: color-mix(in srgb, var(--link) 20%, transparent); }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }
button { font-family: inherit; }
picture { display: contents; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--link); outline-offset: 2px; border-radius: 6px;
}
.wrap { max-width: 875px; margin: 0 auto; padding: 0 var(--pad-x) 72px; }
.index-wrap { max-width: 1000px; }

/* 顶部导航：不吸顶，随页面滚动离开视口 */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
  margin: 0 calc(var(--pad-x) * -1) 24px;
  padding: 0 var(--pad-x);
  border-bottom: 1px solid var(--border);
}
.post-header { justify-content: flex-start; }
.back-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-left: -10px; padding: 8px 10px;
  color: var(--muted); font-size: 14px; border-radius: 8px;
}
.back-link:hover { color: var(--fg); background: var(--card); text-decoration: none; }
.site-header .brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 17px; letter-spacing: -.01em; color: var(--fg);
}
.site-header .brand:hover { text-decoration: none; }
.site-header .brand-mark {
  display: block; width: 26px; height: 26px; border-radius: 6px;
}
.site-header nav { display: flex; align-items: center; gap: 2px; }
.site-header nav a {
  display: inline-block; padding: 7px 12px;
  color: var(--muted); font-size: 14px; border-radius: 999px;
  -webkit-tap-highlight-color: transparent;
}
.site-header nav a:hover { color: var(--fg); background: var(--card); text-decoration: none; }
.site-header nav a.active { background: var(--fg); color: #fff; }
.site-header nav a.active:hover { background: var(--fg); color: #fff; }
.site-header nav .gh-link { margin-left: 4px; }

/* 作者与标题 */
.author { display: flex; gap: 12px; align-items: center; margin: 2px 0 18px; }
.author img, .author .avatar-empty {
  flex: none; width: 46px; height: 46px; border-radius: 50%;
  object-fit: cover; background: var(--card);
}
.author .name { font-weight: 700; font-size: 16px; line-height: 1.45; }
.author .meta {
  color: var(--muted); font-size: 13.5px; line-height: 1.55; overflow-wrap: anywhere;
}
h1.title {
  font-size: clamp(26px, 4vw, 32px);
  line-height: 1.32; font-weight: 800; letter-spacing: -.012em;
  margin: 4px 0 16px;
  text-wrap: wrap;
  overflow-wrap: anywhere;
}

/* 正文：中文阅读以行高和段距为主，链接加淡淡下划线便于识别 */
.article { overflow-wrap: anywhere; }
.article p { margin: 0 0 1.1em; white-space: normal; }
.article a {
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--link) 32%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.article a:hover { text-decoration-color: currentColor; }
.article h2 {
  font-size: 23px; line-height: 1.4; margin: 38px 0 14px;
  font-weight: 800; letter-spacing: -.008em;
}
.article h3 { font-size: 19.5px; line-height: 1.45; margin: 30px 0 10px; font-weight: 700; }
.article h4 { font-size: 17px; line-height: 1.5; margin: 24px 0 8px; font-weight: 700; }
.article ul, .article ol { padding-left: 1.35em; margin: 0 0 1.1em; }
.article li { margin: 4px 0; }
.article li::marker { color: var(--muted-2); }
.article figure.media { position: relative; margin: 20px 0; }
.article figure.media .media-link {
  display: block; overflow-x: auto; -webkit-overflow-scrolling: touch;
}
.article figure.media img {
  display: block; width: calc(100% * var(--img-zoom, 1)); max-width: none; height: auto;
  margin: 0 auto; border-radius: 12px;
  border: 1px solid var(--border); background: var(--card);
}
.article img { max-width: 100%; height: auto; }
.media-link { display: block; }
/* 正文图片缩放控件：按需出现在右下角，状态跨设备同步 */
.img-zoom-controls {
  position: absolute; right: 8px; bottom: 8px; z-index: 2;
  display: inline-flex; align-items: center; gap: 2px;
  padding: 2px; border-radius: 999px;
  background: rgba(15, 20, 25, .58);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(4px) scale(.97);
  transition: opacity .16s ease, transform .16s ease, visibility .16s ease;
}
.img-zoom-controls.is-visible {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateY(0) scale(1);
}
.img-zoom-btn {
  width: 28px; height: 28px; border: 0; border-radius: 50%;
  background: transparent; color: #fff; font-size: 18px; line-height: 1;
  font-family: inherit; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.img-zoom-btn:hover { background: rgba(255, 255, 255, .18); }
.img-zoom-btn:focus-visible { outline: 2px solid #fff; outline-offset: 1px; }
.img-zoom-preview { font-size: 15px; }
.img-zoom-field {
  display: inline-flex; align-items: center; justify-content: center;
  height: 24px; padding: 0 5px; border-radius: 999px;
  transition: background .15s ease, box-shadow .15s ease;
}
.img-zoom-field:focus-within {
  background: rgba(255, 255, 255, .18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .55);
}
.img-zoom-input {
  width: 27px; padding: 0; border: 0; background: transparent;
  color: #fff; font-size: 11px; font-family: inherit; font-weight: 500;
  text-align: right; font-variant-numeric: tabular-nums; caret-color: #fff;
  -webkit-appearance: none; appearance: none;
}
.img-zoom-input:focus { outline: none; }
.img-zoom-pct { color: #fff; font-size: 11px; line-height: 1; }
/* 正文图片预览：点击图片外的区域关闭 */
body.img-lightbox-open { overflow: hidden; }
.img-lightbox {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background: rgba(8, 10, 12, .86);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  opacity: 0; transition: opacity .2s ease;
}
.img-lightbox[hidden] { display: none; }
.img-lightbox.is-open { opacity: 1; }
.img-lightbox-img {
  max-width: min(96vw, 1600px); max-height: 88vh;
  width: auto; height: auto;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .45);
  transform: scale(.96);
  transition: transform .2s ease;
  object-fit: contain;
}
.img-lightbox.is-open .img-lightbox-img { transform: scale(1); }
.img-lightbox-close {
  position: absolute; top: 16px; right: 18px;
  width: 40px; height: 40px; border: 0; border-radius: 50%;
  background: rgba(255, 255, 255, .14); color: #fff;
  font-size: 24px; line-height: 1; font-family: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.img-lightbox-close:hover { background: rgba(255, 255, 255, .24); }
.article pre {
  background: #0f1419; color: #e7e9ea;
  margin: 18px 0; padding: 14px 16px; border-radius: 12px;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 13px; line-height: 1.6;
}
.article pre code { font: inherit; color: inherit; }
.inline-code {
  padding: .1em .34em;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #f6f8fa;
  color: #24364b;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .88em;
  line-height: 1.45;
  white-space: break-spaces;
  overflow-wrap: anywhere;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.article blockquote {
  margin: 18px 0; padding: 2px 0 2px 16px;
  border-left: 3px solid var(--border-strong);
  color: var(--muted);
}
.article .callout {
  margin: 22px 0; padding: 18px 20px;
  background: #f1f8fe;
  border: 1px solid #d5e8f8;
  border-left: 4px solid var(--link);
  border-radius: 12px;
}
.callout__title {
  margin-bottom: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: .04em;
  color: var(--link);
}
.article .callout ul { margin: 0; padding-left: 20px; }
.article .callout li { margin: 6px 0; line-height: 1.75; }
.article .callout p { margin: 8px 0 0; }
.table-wrap {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  margin: 18px 0 22px;
}
.article table { border-collapse: collapse; width: 100%; font-size: 14px; line-height: 1.55; }
.article th, .article td {
  border: 1px solid var(--border); padding: 9px 12px;
  text-align: left; vertical-align: top;
}
.article th { background: var(--card); font-weight: 600; color: var(--fg); white-space: nowrap; }
.article td { overflow-wrap: anywhere; }
.article tbody tr:nth-child(even) td { background: #fbfcfd; }
.orig-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin: 2px 0 22px; padding: 4px 0;
  font-size: 13.5px; color: var(--muted);
}
.orig-link:hover { color: var(--fg); }
.fidelity {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; margin: 28px 0 0;
  font-size: 12.5px; line-height: 1.65; color: var(--muted);
  overflow-wrap: anywhere;
}
.img-missing { color: #f4212e; font-size: 14px; }

/* 右侧目录：宽屏显示，整块可隐藏，可全折叠到只剩一级 */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .img-zoom-controls { transition: none; }
}
/* 目录：宽屏固定侧栏；窄屏默认折叠，点「目录」按钮展开浮层 */
.toc {
  position: fixed; top: 92px; right: 16px; z-index: 20;
  width: 200px; max-width: 82vw; max-height: calc(100vh - 130px); overflow-y: auto;
  padding: 12px; border: 1px solid var(--border); border-radius: 12px;
  background: rgba(255, 255, 255, .95);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  font-size: 12.5px; line-height: 1.55;
}
.toc-open {
  position: fixed; top: 92px; right: 16px; z-index: 21;
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; padding: 0;
  border: 0; background: transparent; color: var(--muted);
  cursor: grab; touch-action: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none; user-select: none;
}
.toc-open:hover { color: var(--fg); }
.toc-open.is-dragging { cursor: grabbing; opacity: .7; }
.toc-open-icon {
  width: 20px; height: 20px; pointer-events: none;
  fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.toc[hidden], .toc-open[hidden] { display: none; }
.toc-head { display: flex; align-items: center; gap: 4px; margin-bottom: 8px; }
.toc-title { flex: 1; font-weight: 700; color: var(--fg); font-size: 12.5px; }
.toc-fold, .toc-close {
  border: 0; background: none; padding: 2px 6px; border-radius: 6px;
  color: var(--muted); font: inherit; font-size: 11.5px; cursor: pointer;
}
.toc-fold:hover, .toc-close:hover { background: var(--card); color: var(--fg); }
.toc-close { font-size: 15px; line-height: 1; padding: 1px 6px; }
.toc-nav ul { list-style: none; margin: 0; padding: 0; }
.toc-nav .toc-l2-list {
  margin: 2px 0 2px 8px; padding-left: 8px; border-left: 1px solid var(--border);
}
.toc-nav a {
  display: block; padding: 3px 6px; border-radius: 6px;
  color: var(--muted); text-decoration: none; overflow-wrap: anywhere;
}
.toc-nav a:hover { color: var(--fg); background: var(--card); text-decoration: none; }
.toc-nav .toc-l1 { color: color-mix(in srgb, var(--fg) 84%, var(--link)); font-weight: 600; }
.toc.is-folded .toc-l2-list { display: none; }
h2[id], h3[id] { scroll-margin-top: 20px; }

/* 聊天记录：微信式左头像气泡；整块默认折叠，点击 summary 展开 */
.chat-block { display: flex; flex-direction: column; gap: 12px; margin: 22px 0 26px; }
.chat-appendix {
  border: 1px solid var(--border); border-radius: 12px; background: var(--card);
  overflow: hidden;
}
/* 作者样式里的 display 会盖过浏览器对 details 的默认隐藏，这里显式收起 */
.chat-appendix:not([open]) > :not(summary) { display: none; }
.chat-log {
  display: flex; flex-direction: column; gap: 18px;
  padding: 18px 20px;
}
.chat-msg {
  display: grid; grid-template-columns: 38px minmax(0, 1fr);
  align-items: start; gap: 10px; min-width: 0;
}
.chat-avatar {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%; overflow: hidden;
  background: var(--card); box-shadow: inset 0 0 0 1px rgba(15, 20, 25, .06);
}
.chat-avatar img { width: 100%; height: 100%; display: block; object-fit: cover; }
.chat-avatar__initial {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%; background: var(--chat-avatar-bg, #4a5568);
  color: #fff; font-size: 15px; font-weight: 750; line-height: 1;
}
.chat-message { min-width: 0; }
.chat-meta {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 8px;
  margin: 0 0 5px; color: var(--muted); font-size: 13px; line-height: 1.45;
}
.chat-user { color: color-mix(in srgb, var(--fg) 84%, var(--muted)); font-weight: 700; }
.chat-time { color: var(--muted-2); font-size: 11.5px; font-weight: 400; }
.chat-bubble {
  position: relative; display: inline-block;
  max-width: min(100%, 680px); padding: 10px 14px;
  border: 1px solid #e0e9e2; border-radius: 4px 14px 14px 14px;
  background: #f1f7f2;
}
.chat-bubble::before {
  content: ""; position: absolute; top: 13px; left: -5px;
  width: 9px; height: 9px; border-left: 1px solid #e0e9e2;
  border-bottom: 1px solid #e0e9e2; background: #f1f7f2;
  transform: rotate(45deg);
}
.chat-text {
  color: var(--fg); font-size: 16px; line-height: 1.7;
  white-space: pre-wrap; overflow-wrap: anywhere;
}
.chat-appendix > summary {
  cursor: pointer; padding: 12px 16px;
  color: var(--muted); font-size: 14px; font-weight: 600; line-height: 1.6;
  list-style: none; user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.chat-appendix > summary::-webkit-details-marker { display: none; }
.chat-appendix > summary::before { content: "▸ "; color: var(--muted-2); }
.chat-appendix[open] > summary { border-bottom: 1px solid var(--border); }
.chat-appendix[open] > summary::before { content: "▾ "; }
.chat-note {
  padding: 14px 20px 0; color: var(--muted-2);
  font-size: 13px; line-height: 1.65;
}
@media (max-width: 640px) {
  .chat-log { padding: 14px; }
  .chat-note { padding: 12px 14px 0; }
  .chat-msg { grid-template-columns: 34px minmax(0, 1fr); gap: 8px; }
  .chat-avatar { width: 34px; height: 34px; }
  .chat-avatar__initial { font-size: 14px; }
  .chat-text { font-size: 15.5px; }
}

/* 目录：筛选与排序 */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 20px; }
.filters button {
  border: 1px solid transparent; background: var(--card); border-radius: 999px;
  padding: 6px 13px; cursor: pointer; font-size: 13.5px; color: var(--muted);
  transition: background .12s ease, color .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.filters button:hover { background: var(--card-hover); color: var(--fg); }
/* 分类筛选按钮（#filters 内 data-cat）比其余小按钮略大、颜色略偏链接色 */
.filters button[data-cat] {
  font-size: 14.5px; color: color-mix(in srgb, var(--fg) 82%, var(--link));
}
.filters button.active { background: var(--fg); color: #fff; border-color: var(--fg); }
.search {
  width: 100%; height: 44px; padding: 0 16px; margin-bottom: 12px;
  border: 1px solid var(--border); border-radius: 999px;
  background: var(--bg); color: var(--fg);
  font-size: 16px;
  transition: border-color .12s ease, box-shadow .12s ease;
}
.search::placeholder { color: var(--muted-2); }
.search:focus {
  outline: none; border-color: var(--link);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--link) 16%, transparent);
}
.index-intro { color: var(--muted); font-size: 14.5px; line-height: 1.75; margin: -6px 0 20px; }
.filter-bar { margin: 0 0 8px; }
.filter-toggle {
  width: 100%; display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border: 1px solid var(--border); border-radius: 12px;
  background: var(--card); color: var(--fg); font: inherit; cursor: pointer; text-align: left;
  -webkit-tap-highlight-color: transparent;
}
.filter-toggle:hover { border-color: var(--border-strong); }
.filter-toggle-label { font-weight: 700; font-size: 14px; white-space: nowrap; }
.filter-summary {
  flex: 1; min-width: 0; color: var(--muted); font-size: 13px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.filter-toggle.has-active .filter-summary { color: var(--link); }
.filter-chevron { color: var(--muted); font-size: 12px; transition: transform .15s ease; }
.filter-toggle[aria-expanded="true"] .filter-chevron { transform: rotate(180deg); }
.filter-panel { padding: 2px 0 0; }
.filter-panel .filters { margin: 10px 0 12px; }
.filter-panel .filter-rows { margin-bottom: 8px; }
.filter-rows { display: flex; flex-direction: column; gap: 6px; margin: 6px 0 14px; }
.filter-row { display: flex; align-items: center; gap: 10px; }
.filter-row .flabel { flex: 0 0 34px; color: var(--muted); font-size: 12.5px; }
.filter-row .filters { margin: 0; gap: 6px; }
.filter-row .filters button { padding: 4px 11px; font-size: 12.5px; }
.meta-status { min-height: 1.2em; margin: -4px 0 16px; color: var(--muted); font-size: 12px; }
#meta-count { margin-left: 10px; }

/* 分类标题与卡片 */
.cat {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 8px;
  margin: 26px 0 12px; padding: 10px 14px;
  border: 1px solid transparent; border-radius: 10px;
  background: var(--card);
  color: color-mix(in srgb, var(--fg) 80%, var(--link));
  font-size: 17px; font-weight: 700; user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.cat:hover { background: var(--card-hover); }
.cat .cat-toggle {
  flex: 1; min-width: 0; display: flex; align-items: center; gap: 8px;
  border: 0; padding: 0; background: transparent; color: inherit;
  font: inherit; text-align: left; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.cat .cat-toggle:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 6px; }
.cat .cat-name { flex: 1; min-width: 0; }
.cat .cat-count {
  color: var(--muted); font-size: 12px; font-weight: 600; background: var(--bg);
  border: 1px solid var(--border); border-radius: 999px; padding: 1px 8px; white-space: nowrap;
}
.cat .cat-chevron { color: var(--muted); font-size: 12px; transition: transform .15s ease; }
.cat .cat-drag {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; padding: 0;
  border: 0; border-radius: 7px; background: transparent;
  color: var(--muted-2); cursor: grab; touch-action: none;
  -webkit-tap-highlight-color: transparent;
}
.cat .cat-drag:hover { background: var(--bg); color: var(--fg); }
.cat .cat-drag:focus-visible { outline: 2px solid var(--link); outline-offset: 1px; }
.cat .cat-drag[aria-disabled="true"] {
  opacity: .32; cursor: default; pointer-events: none;
}
.cat .cat-drag-icon { width: 15px; height: 15px; fill: currentColor; }
.cat.is-dragging {
  border-color: var(--link);
  box-shadow: 0 10px 30px rgba(15, 20, 25, .12);
  opacity: .76;
}
.cat.is-collapsed .cat-chevron { transform: rotate(-90deg); }
.cat.is-collapsed { background: transparent; }
.cat.is-static, .cat.is-static:hover { background: var(--card); }
.cat.is-static .cat-toggle { cursor: default; }
#list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
#list .cat { margin-top: 24px; }
#list .cat:first-child { margin-top: 4px; }
.card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 16px 18px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); color: inherit;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
  -webkit-tap-highlight-color: transparent;
}
.card:active { background: var(--card); }
@media (hover: hover) {
  .card:hover {
    border-color: var(--border-strong);
    box-shadow: 0 8px 24px rgba(15, 20, 25, .06);
  }
}
.card .ctitle {
  font-weight: 700; font-size: 16.5px; line-height: 1.5; margin-bottom: 7px;
  overflow-wrap: anywhere;
  padding-right: 38px; /* 给右上角图钉留位置 */
}
.card .cmeta {
  color: var(--muted); font-size: 12.5px; line-height: 1.5; margin-bottom: 8px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.list-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 12px; margin: 2px 0 4px;
}
.list-count { color: var(--muted); font-size: 13px; }
.cat-order-hint { color: var(--muted-2); font-size: 12px; }
.empty-state {
  margin: 28px 0; padding: 32px 20px; text-align: center;
  border: 1px dashed var(--border-strong); border-radius: var(--radius);
  color: var(--muted); font-size: 14px;
}
.empty-state p { margin: 0 0 14px; }
.empty-state button {
  border: 1px solid var(--border); background: var(--bg); border-radius: 999px;
  padding: 6px 16px; font: inherit; font-size: 13px; color: var(--fg); cursor: pointer;
}
.empty-state button:hover { background: var(--card-hover); }
.list-actions { display: flex; gap: 8px; }
.list-actions button {
  border: 1px solid var(--border); background: var(--bg); border-radius: 999px;
  padding: 4px 11px; font: inherit; font-size: 12.5px; color: var(--muted); cursor: pointer;
}
.list-actions button:hover { color: var(--fg); border-color: var(--border-strong); }

/* 目录页置顶区 */
.pinned { margin: 18px 0 8px; }
.pinned-title { margin: 0 0 10px; font-size: 17px; font-weight: 700; color: var(--fg); }
.pinned-title.is-toggle {
  display: flex; align-items: center; gap: 8px;
  cursor: pointer; user-select: none; -webkit-tap-highlight-color: transparent;
}
.pinned-title.is-toggle .cat-chevron {
  color: var(--muted); font-size: 12px; transition: transform .15s ease;
}
.pinned.is-collapsed .pinned-title.is-toggle .cat-chevron { transform: rotate(-90deg); }
.pinned.is-collapsed .pinned-list { display: none; }
.pinned-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.pinned-item { display: block; }
.pinned-item .card { height: 100%; }
.footer {
  margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--border);
  color: var(--muted-2); font-size: 12px;
}

/* 评分 / 已读 */
.xr-stars { display: inline-flex; gap: 1px; line-height: 1; color: #cfd6dc; font-size: 12px; }
.xr-stars .xr-star { font-size: inherit; cursor: default; }
.xr-rating { display: inline-flex; gap: 2px; align-items: center; }
.xr-star {
  appearance: none; -webkit-appearance: none; border: 0; background: none;
  padding: 3px 2px; margin: 0; font-family: inherit; font-size: 24px; line-height: 1;
  color: #cfd6dc; cursor: pointer; transition: color .12s ease, transform .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.xr-star.on { color: var(--star); }
.xr-rating .xr-star:hover { transform: translateY(-1px) scale(1.08); }
.xr-star:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 6px; }
.card-badges { display: inline-flex; align-items: center; gap: 6px; margin-left: 8px; vertical-align: middle; }
.badge-read {
  background: var(--ok-soft); color: var(--ok); font-size: 11px; font-weight: 600;
  line-height: 1.6; padding: 0 7px; border-radius: 999px;
}
/* 卡片右上角图钉：未置顶为灰色空心，已置顶仅换橙色，不加底色 */
.card-pin {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 999px;
  border: 1px solid transparent; background: transparent; color: var(--muted);
  cursor: pointer; transition: background .12s ease, color .12s ease, border-color .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.card-pin:hover { color: var(--fg); }
.card-pin.on { color: #b45309; }
.card-pin-icon { display: block; width: 15px; height: 15px; }
.source-badge {
  display: inline-flex; align-items: center; gap: 4px;
  margin-left: 8px; vertical-align: middle;
  border: 1px solid var(--border); border-radius: 999px; padding: 0 7px;
  color: var(--muted); font-size: 11px; font-weight: 600;
  line-height: 1.7; white-space: nowrap;
}
/* 文章页分类标签：与「查看原文」同一行、同字号，点击回目录定位分类 */
.post-meta-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px;
  margin: 0 0 12px;
}
.post-meta-row .orig-link { margin: 0; }
.post-meta-row .source-badge { margin-left: 0; }
.cat-badge {
  display: inline-flex; align-items: center;
  border: 0; padding: 0;
  color: var(--muted-2); font-size: 13px; font-weight: 500;
  line-height: 1.6; white-space: nowrap;
}
.cat-badge::before { content: "分类："; color: var(--muted-2); }
.cat-badge:hover { color: var(--link); text-decoration: none; }
.tag-list {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  margin: 0 0 14px;
}
.tag-list--compact { gap: 5px; margin: 9px 0 0; }
.tag-list__label {
  color: var(--muted-2); font-size: 12px; font-weight: 600;
  margin-right: 2px;
}
.tag-badge {
  display: inline-flex; align-items: center;
  border: 1px solid var(--border); border-radius: 6px;
  padding: 1px 7px; background: #fafbfc;
  color: var(--muted); font-size: 11.5px; font-weight: 500;
  line-height: 1.65;
}
.tag-list--compact .tag-badge { padding: 0 6px; font-size: 11px; }
.source-badge .src-icon {
  display: inline-block; width: 12px; height: 12px;
  font-size: 11px; line-height: 1; text-align: center;
}
.source-badge svg.src-icon { fill: none; stroke: currentColor; stroke-width: 1.2; }
.card-linkonly { cursor: default; }
.card-linkonly .ctitle a { color: inherit; }
.card-linkonly .ctitle a:hover { color: var(--link); text-decoration: underline; }
/* 徽标按来源类型配色：淡底深字 */
.source-badge[data-source-type="x_article"] {
  background: #f2ecfc; color: #6b21c4; border-color: #e2d5f5;
}
.source-badge[data-source-type="x_post"] {
  background: #fff1e6; color: #c2410c; border-color: #f6dcc3;
}
.source-badge[data-source-type="web_article"] {
  background: #e9f2f1; color: #1f5f5b; border-color: #d2e3e1;
}
.source-badge[data-source-type="talk"] {
  background: #e8f4ff; color: #0b63a8; border-color: #cfe6fa;
}
.source-badge[data-source-type="webcafe"] {
  background: #eef4ff; color: #1d4ed8; border-color: #dbe7ff;
}
.source-badge[data-source-type="wechat"] {
  background: #e8f7ee; color: #14803c; border-color: #cfead9;
}
.source-badge[data-source-type="reddit"] {
  background: #fff0e8; color: #c93a00; border-color: #ffd5c0;
}
.source-badge[data-source-type="reddit"] svg.src-icon { color: #ff4500; }
.source-badge[data-source-type="note"] {
  background: #fff8e1; color: #9a6700; border-color: #f2e3b3;
}
.card-controls {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px;
  margin-top: 8px; font-size: 13px;
}
.card-controls .cc-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.card-controls .xr-star { font-size: 19px; padding: 4px 3px; }
.card-controls .pc-read { padding: 4px 11px; font-size: 12.5px; }
.post-controls {
  --post-rating-size: 13.5px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px;
  margin: 0 0 12px; padding: 0;
  background: transparent; border: 0; border-radius: 0;
  font-size: 14px;
}
.post-controls .pc-row { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; }
.post-controls .pc-label { color: var(--muted); font-size: var(--post-rating-size); }
.post-controls .xr-star {
  padding: 1px; font-size: var(--post-rating-size); line-height: 1;
}
.post-controls .pc-rating-text { color: var(--muted); font-size: 12.5px; }
.post-controls .pc-read {
  border: 0; background: transparent; padding: 3px 0;
}
.post-controls .pc-read:hover { color: var(--fg); text-decoration: underline; }
.post-controls .pc-read.on {
  background: transparent; border: 0; color: var(--ok);
}
.post-controls .pc-pin {
  width: 28px; height: 28px; padding: 0; justify-content: center;
  border: 0; background: transparent;
}
.post-controls .pc-pin.on { background: transparent; color: #b45309; }
.pc-read {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--muted);
  border-radius: 999px; padding: 5px 12px; font-size: 13px; font-family: inherit;
  cursor: pointer; transition: background .12s ease, color .12s ease, border-color .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.pc-read:hover { border-color: var(--border-strong); color: var(--fg); }
.pc-read.on { background: var(--ok-soft); border-color: #b7e0c6; color: var(--ok); font-weight: 600; }
.pc-read .pc-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .45; }
.pc-read.on .pc-dot { opacity: 1; }
.pc-pin {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--muted);
  border-radius: 999px; padding: 5px 12px; font-size: 13px; font-family: inherit;
  cursor: pointer; transition: background .12s ease, color .12s ease, border-color .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.pc-pin:hover { border-color: var(--border-strong); color: var(--fg); }
.pc-pin.on { background: #fff4e5; border-color: #f0d3a8; color: #b45309; font-weight: 600; }
.pc-pin-icon { display: block; width: 13px; height: 13px; flex: none; }
.card-controls .pc-pin { padding: 4px 11px; font-size: 12.5px; }

/* 网站收藏 */
#sites { display: block; }
.site-group { margin: 0 0 26px; }
.site-group .cat { margin: 0 0 12px; }
.sites-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.site-card {
  display: flex; align-items: center; gap: 8px;
  padding: 13px 12px 13px 15px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); color: inherit;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
  -webkit-tap-highlight-color: transparent;
}
.site-main {
  flex: 1; min-width: 0;
  display: flex; align-items: center; gap: 12px;
  color: inherit;
}
.site-card:active { background: var(--card); }
@media (hover: hover) {
  .site-card:hover {
    border-color: var(--border-strong);
    box-shadow: 0 8px 24px rgba(15, 20, 25, .06);
  }
  .site-main:hover { text-decoration: none; }
}
.site-pin {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 999px;
  border: 1px solid transparent; background: transparent; color: var(--muted);
  cursor: pointer; transition: background .12s ease, color .12s ease, border-color .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.site-pin:hover { background: var(--card); color: var(--fg); }
.site-pin.on { color: #b45309; }
.site-pin-icon { display: block; width: 15px; height: 15px; }
.site-logo {
  flex: none; width: 40px; height: 40px; border-radius: 10px;
  object-fit: contain; background: var(--card);
}
.site-logo-fallback {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: var(--muted);
}
.site-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.site-title { font-weight: 600; font-size: 15.5px; line-height: 1.4; overflow-wrap: anywhere; }
.site-host { color: var(--muted); font-size: 12.5px; line-height: 1.4; overflow-wrap: anywhere; }

/* 手机端：单列、更大触控区、正文不出现横向滚动 */
@media (max-width: 760px) {
  #list { grid-template-columns: 1fr; }
  .pinned-list { grid-template-columns: 1fr; }
  .sites-grid { grid-template-columns: 1fr; }
  .index-wrap { max-width: 700px; }
}
@media (max-width: 560px) {
  :root { --pad-x: 16px; --header-h: 52px; }
  body { line-height: 1.8; }
  .wrap { padding-bottom: 56px; }
  .site-header { margin-bottom: 20px; }
  .site-header .brand { font-size: 16.5px; }
  .site-header .brand-mark { width: 24px; height: 24px; }
  .site-header nav .gh-link { display: none; }
  .site-header nav a { padding: 6px 10px; font-size: 13.5px; }
  h1.title { font-size: 25px; line-height: 1.36; margin-bottom: 14px; }
  .index-wrap h1.title { font-size: 24px; }
  .author { margin-bottom: 16px; }
  .author img, .author .avatar-empty { width: 42px; height: 42px; }
  .article { line-height: 1.85; }
  .article h2 { font-size: 21px; margin: 32px 0 12px; }
  .article h3 { font-size: 18.5px; margin: 26px 0 9px; }
  .article h4 { font-size: 16.5px; margin: 22px 0 8px; }
  .article pre {
    white-space: pre-wrap; overflow-wrap: anywhere;
    font-size: 12.5px; padding: 12px 14px;
  }
  .article figure.media { margin: 18px -4px; }
  .article table { font-size: 13.5px; }
  .article th, .article td { padding: 8px 10px; }
  .post-controls { gap: 8px 12px; }
  .card-controls .xr-star { font-size: 22px; padding: 5px 3px; }
  .pc-read { padding: 7px 14px; }
  .card-controls .pc-read { padding: 6px 12px; }
  .card { padding: 15px 16px; }
  .card .cmeta { white-space: normal; }
  .pinned-title { font-size: 16px; }
  .pc-pin { padding: 7px 14px; }
  .card-controls .pc-pin { padding: 6px 12px; }
  .filters button { padding: 8px 14px; font-size: 14px; }
  .filter-row { align-items: flex-start; }
  .filter-row .flabel { flex-basis: 34px; padding-top: 8px; font-size: 12.5px; }
  .filter-row .filters button { padding: 7px 12px; font-size: 13px; }
  .list-actions button { padding: 6px 12px; min-height: 32px; }
  .footer { margin-top: 40px; }
}