/* ==========================================================================
   苔痕 CMS · 前台样式
   L1 色板 → L2 语义 → L3 重置 → L4 布局
   ========================================================================== */

:root {
  /* L1 色板（原始值只在这里出现） */
  --c-paper: #f7f6f2;
  --c-paper-2: #fbfaf7;
  --c-ink: #1e2320;
  --c-ink-2: #3a423e;
  --c-grey: #5f6863;
  --c-grey-2: #8d948f;
  --c-line: #e5e2d9;
  --c-white: #ffffff;
  --c-mint: #1f6f52;
  --c-mint-ink: #14503b;
  --c-mint-soft: #e7f2ec;
  --c-brown: #a9764f;

  /* L2 语义（组件只用这一层） */
  --bg: var(--c-paper);
  --bg-soft: var(--c-paper-2);
  --card: var(--c-white);
  --line: var(--c-line);
  --line-soft: #eeebe3;
  --text: var(--c-ink);
  --text-2: var(--c-ink-2);
  --muted: var(--c-grey);
  --faint: var(--c-grey-2);
  --pri: var(--c-mint);
  --pri-ink: var(--c-mint-ink);
  --pri-soft: var(--c-mint-soft);
  --accent: var(--c-brown);

  /* L4 布局 */
  --wrap: 1160px;
  --wrap-narrow: 760px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(24, 34, 28, .04), 0 14px 34px -26px rgba(24, 34, 28, .5);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", monospace;
}

/* 暗色：重新定义 L2，而不是简单反色 */
html[data-theme="dark"] {
  --bg: #111513;
  --bg-soft: #151a18;
  --card: #191f1c;
  --line: #2a322e;
  --line-soft: #232b27;
  --text: #e9ece9;
  --text-2: #cfd5d1;
  --muted: #9aa49e;
  --faint: #77817b;
  --pri: #7fc4a6;
  --pri-ink: #9ad8bd;
  --pri-soft: #1c2b25;
  --accent: #c8a07a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 18px 40px -30px rgba(0, 0, 0, .9);
}

/* --------------------------------------------------------------------------
   L3 重置
   -------------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 600; letter-spacing: -.018em; line-height: 1.35; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
i { font-style: normal; }
::selection { background: var(--pri-soft); color: var(--pri-ink); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--pri); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.ico { flex: 0 0 auto; vertical-align: -2px; }

/* --------------------------------------------------------------------------
   L4 布局骨架
   -------------------------------------------------------------------------- */

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* 头部 */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-head.is-scrolled { border-bottom-color: var(--line); }
.site-head__inner { display: flex; align-items: center; gap: 28px; height: 66px; }

.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand__mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--pri); color: #fff;
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 17px; font-weight: 600;
  box-shadow: 0 2px 6px rgba(31, 111, 82, .22);
}
.brand__text b { display: block; font-family: var(--serif); font-size: 16px; font-weight: 600; letter-spacing: .01em; line-height: 1.2; }
.brand__text i { display: block; font-size: 9.5px; letter-spacing: .18em; color: var(--faint); font-style: normal; }

.site-nav { display: flex; align-items: center; gap: 22px; flex: 1; }
.site-nav a {
  font-size: 13.5px; color: var(--muted); position: relative; padding: 4px 0;
  transition: color .16s ease;
}
.site-nav a:hover { color: var(--text); }
.site-nav a.on { color: var(--pri-ink); font-weight: 500; }
.site-nav a.on::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1.5px;
  background: var(--pri); border-radius: 2px;
}

.site-tools { display: flex; align-items: center; gap: 4px; }
.icon-btn {
  width: 34px; height: 34px; display: grid; place-items: center;
  border: 1px solid transparent; border-radius: 8px; background: none; color: var(--muted);
  transition: .16s ease;
}
.icon-btn:hover { background: var(--pri-soft); color: var(--pri-ink); }
.icon-btn--menu { display: none; }
.ico-moon { display: none; }
html[data-theme="dark"] .ico-sun { display: none; }
html[data-theme="dark"] .ico-moon { display: block; }

/* 搜索层 */
.search-layer {
  position: fixed; inset: 0; z-index: 60;
  background: color-mix(in oklab, var(--text) 34%, transparent);
  backdrop-filter: blur(6px);
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 14vh;
}
.search-layer[hidden] { display: none; }
.search-layer__box { width: min(620px, calc(100vw - 32px)); }
.search-layer__form {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 0 16px; height: 56px;
  box-shadow: 0 24px 60px -20px rgba(20, 30, 25, .4);
  color: var(--muted);
}
.search-layer__form input {
  flex: 1; border: 0; outline: none; background: none; font-size: 16px; color: var(--text);
}
.search-layer__form kbd {
  font-family: var(--mono); font-size: 10px; color: var(--faint);
  border: 1px solid var(--line); border-radius: 4px; padding: 2px 6px;
}
.search-layer__hint { margin-top: 10px; text-align: center; font-size: 11.5px; color: rgba(255,255,255,.72); }

/* 移动抽屉 */
.drawer { position: fixed; inset: 0; z-index: 70; background: color-mix(in oklab, var(--text) 40%, transparent); }
.drawer[hidden] { display: none; }
.drawer__panel {
  width: min(300px, 82vw); height: 100%; background: var(--card);
  border-right: 1px solid var(--line); padding: 18px 20px;
  animation: slide-in .22s ease;
}
@keyframes slide-in { from { transform: translateX(-14px); opacity: .6; } to { transform: none; opacity: 1; } }
.drawer__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.drawer__head b { font-family: var(--serif); font-size: 16px; }
.drawer__nav { display: grid; gap: 2px; }
.drawer__nav a { padding: 11px 10px; border-radius: 8px; font-size: 14.5px; color: var(--text-2); }
.drawer__nav a:hover { background: var(--pri-soft); color: var(--pri-ink); }

/* --------------------------------------------------------------------------
   首页
   -------------------------------------------------------------------------- */

.hero { padding: 62px 0 46px; max-width: 780px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--muted); letter-spacing: .02em; margin-bottom: 18px;
}
.dot-live { width: 6px; height: 6px; border-radius: 50%; background: var(--pri); box-shadow: 0 0 0 4px var(--pri-soft); }
.hero__title {
  font-size: clamp(28px, 4.4vw, 44px); line-height: 1.28; letter-spacing: -.03em; margin-bottom: 16px;
}
.hero__desc { font-size: 16px; color: var(--muted); max-width: 620px; line-height: 1.85; }
.hero__meta { display: flex; align-items: center; gap: 14px; margin-top: 22px; font-size: 12.5px; color: var(--faint); }
.hero__meta b { color: var(--text-2); font-weight: 600; font-variant-numeric: tabular-nums; }
.hero__meta > i { width: 1px; height: 11px; background: var(--line); flex: 0 0 auto; }

.feature {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--card); box-shadow: var(--shadow); margin-bottom: 54px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.feature:hover { transform: translateY(-2px); border-color: color-mix(in oklab, var(--pri) 30%, var(--line)); box-shadow: 0 22px 50px -34px rgba(20, 40, 30, .6); }
.feature__cover { position: relative; min-height: 300px; overflow: hidden; background: var(--pri-soft); }
.feature__cover svg { width: 100%; height: 100%; object-fit: cover; }
.feature__body { padding: 34px 36px; display: flex; flex-direction: column; justify-content: center; }
.feature__tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.feature__title { font-size: 24px; line-height: 1.4; margin-bottom: 12px; letter-spacing: -.02em; }
.feature__excerpt { font-size: 14px; color: var(--muted); line-height: 1.85; }
.feature__meta { display: flex; align-items: center; gap: 10px; margin-top: 20px; font-size: 12px; color: var(--faint); }
.feature__meta > i { width: 1px; height: 10px; background: var(--line); flex: 0 0 auto; }
.feature__more { display: inline-flex; align-items: center; gap: 5px; color: var(--pri); font-weight: 500; }
.feature:hover .feature__more .ico { transform: translateX(3px); transition: transform .2s ease; }

.chip {
  display: inline-flex; align-items: center; height: 22px; padding: 0 9px;
  border-radius: 999px; font-size: 11.5px; line-height: 1; border: 1px solid var(--line);
  color: var(--muted); background: transparent; white-space: nowrap;
}
.chip--pri { color: var(--pri-ink); background: var(--pri-soft); border-color: transparent; font-weight: 500; }
.chip--soft { color: var(--muted); background: var(--bg-soft); }

.layout-2col { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; padding-bottom: 72px; }

.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.section-head h2 { font-size: 19px; }
.section-head a { font-size: 12.5px; color: var(--faint); display: inline-flex; align-items: center; gap: 4px; }
.section-head a:hover { color: var(--pri); }

.post-list { display: grid; }
.post-row {
  display: grid; grid-template-columns: 168px minmax(0, 1fr); gap: 22px;
  padding: 24px 0; border-bottom: 1px solid var(--line-soft);
}
.post-row:last-child { border-bottom: 0; }
.post-row__thumb { border-radius: 10px; overflow: hidden; aspect-ratio: 4 / 3; background: var(--pri-soft); }
.post-row__thumb svg { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.post-row:hover .post-row__thumb svg { transform: scale(1.04); }
.post-row__meta { display: flex; align-items: center; gap: 10px; font-size: 11.5px; color: var(--faint); margin-bottom: 8px; }
.post-row__title { font-size: 19px; line-height: 1.45; margin-bottom: 7px; }
.post-row__title a:hover { color: var(--pri-ink); }
.post-row__excerpt { font-size: 13.5px; color: var(--muted); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-row__foot { display: flex; gap: 12px; margin-top: 10px; flex-wrap: wrap; }
.tag-link { font-size: 11.5px; color: var(--faint); transition: color .16s ease; }
.tag-link:hover { color: var(--pri); }

/* 侧栏 */
.side-col { display: grid; gap: 26px; align-content: start; padding-top: 10px; }
.side-card { border-top: 1px solid var(--line); padding-top: 18px; }
.side-card h3 { font-size: 13px; font-family: var(--sans); font-weight: 600; letter-spacing: .04em; color: var(--faint); margin-bottom: 14px; text-transform: none; }
.cat-list { display: grid; gap: 2px; }
.cat-list a { display: flex; align-items: center; gap: 9px; padding: 7px 8px; margin: 0 -8px; border-radius: 7px; font-size: 13.5px; color: var(--text-2); }
.cat-list a:hover { background: var(--bg-soft); }
.cat-list__dot { width: 6px; height: 6px; border-radius: 50%; flex: 0 0 auto; }
.cat-list__name { flex: 1; }
.cat-list__count { font-family: var(--mono); font-size: 11px; color: var(--faint); }

.rank-list { display: grid; gap: 10px; counter-reset: r; }
.rank-list li { display: flex; gap: 9px; font-size: 13px; line-height: 1.6; }
.rank-list__no { font-family: var(--mono); font-size: 11px; color: var(--pri); flex: 0 0 auto; padding-top: 2px; }
.rank-list a { color: var(--text-2); }
.rank-list a:hover { color: var(--pri); }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-cloud a {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--muted); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px 9px; transition: .16s ease;
}
.tag-cloud a:hover { border-color: var(--pri); color: var(--pri-ink); background: var(--pri-soft); }
.tag-cloud i { font-family: var(--mono); font-size: 9.5px; color: var(--faint); }

.side-card--sub { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.side-card--sub p { font-size: 12.5px; color: var(--muted); line-height: 1.75; margin-bottom: 12px; }

/* 分页 */
.pager { display: flex; align-items: center; justify-content: space-between; margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line-soft); }
.pager__btn { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; color: var(--text-2); border: 1px solid var(--line); border-radius: 8px; padding: 7px 13px; background: var(--card); }
.pager__btn:hover { border-color: var(--pri); color: var(--pri-ink); }
.pager__btn.is-disabled { opacity: .4; pointer-events: none; }
.pager__info { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; padding: 0 16px; border-radius: 9px; border: 1px solid transparent;
  background: var(--pri); color: #fff; font-size: 13.5px; font-weight: 500;
  transition: .16s ease; white-space: nowrap;
}
.btn:hover { background: var(--pri-ink); }
.btn--ghost { background: var(--card); border-color: var(--line); color: var(--text-2); }
.btn--ghost:hover { background: var(--pri-soft); border-color: var(--pri); color: var(--pri-ink); }
.btn--sm { height: 32px; padding: 0 12px; font-size: 12.5px; border-radius: 8px; }
.btn--pri { background: var(--pri); color: #fff; }

.empty { padding: 56px 0; text-align: center; color: var(--faint); font-size: 13.5px; display: grid; gap: 14px; justify-items: center; }
.empty--soft { padding: 40px 0; }

/* --------------------------------------------------------------------------
   文章页
   -------------------------------------------------------------------------- */

.article { padding-top: 26px; }

.crumb { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--faint); margin-bottom: 26px; flex-wrap: wrap; }
.crumb a:hover { color: var(--pri); }
.crumb__current { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 60ch; }

.article__head { max-width: 820px; margin-bottom: 30px; }
.article__kicker { display: flex; gap: 6px; margin-bottom: 16px; }
.article__title { font-size: clamp(26px, 3.6vw, 38px); line-height: 1.32; letter-spacing: -.028em; margin-bottom: 14px; }
.article__excerpt { font-size: 16px; color: var(--muted); line-height: 1.85; max-width: 700px; }
.article__meta { display: flex; align-items: center; gap: 12px; margin-top: 20px; font-size: 12.5px; color: var(--faint); flex-wrap: wrap; }
.article__meta > i { width: 1px; height: 11px; background: var(--line); flex: 0 0 auto; }
.article__meta span { display: inline-flex; align-items: center; gap: 5px; }
.article__author { gap: 7px !important; color: var(--text-2); }

.avatar {
  width: 22px; height: 22px; border-radius: 50%; display: inline-grid; place-items: center;
  background: var(--pri-soft); color: var(--pri-ink);
  font-family: var(--serif); font-size: 11px; font-style: normal; flex: 0 0 auto;
}
.avatar--sm { width: 20px; height: 20px; font-size: 10px; }

.article__cover {
  border-radius: var(--radius); overflow: hidden; margin-bottom: 44px;
  background: var(--pri-soft); aspect-ratio: 21 / 9; box-shadow: var(--shadow);
}
.article__cover svg { width: 100%; height: 100%; object-fit: cover; }

.article__layout { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 64px; padding-bottom: 40px; }
.article__layout.is-single { grid-template-columns: minmax(0, 800px); }
.article__body { min-width: 0; }

/* 正文排版 */
.prose { font-size: 16.5px; line-height: 1.95; color: var(--text-2); }
.prose > * + * { margin-top: 1.15em; }
.prose h2 {
  font-size: 24px; margin-top: 2.1em; margin-bottom: .7em; padding-bottom: .35em;
  border-bottom: 1px solid var(--line-soft); scroll-margin-top: 90px;
}
.prose h3 { font-size: 19px; margin-top: 1.8em; margin-bottom: .6em; scroll-margin-top: 90px; }
.prose h4 { font-size: 16.5px; margin-top: 1.6em; font-family: var(--sans); font-weight: 600; }
.prose p { margin: 1.05em 0; }
.prose a { color: var(--pri); border-bottom: 1px solid color-mix(in oklab, var(--pri) 34%, transparent); }
.prose a:hover { border-bottom-color: var(--pri); }
.prose strong { color: var(--text); font-weight: 600; }
.prose em { color: var(--text); }
.prose ul, .prose ol { margin: 1.1em 0; padding-left: 1.4em; }
.prose ul li { list-style: none; position: relative; padding-left: .2em; margin: .45em 0; }
.prose ul li::before {
  content: ""; position: absolute; left: -1em; top: .78em;
  width: 5px; height: 5px; border-radius: 50%; background: color-mix(in oklab, var(--pri) 60%, transparent);
}
.prose ol { list-style: decimal; }
.prose ol li { margin: .45em 0; padding-left: .2em; }
.prose ol li::marker { color: var(--pri); font-family: var(--mono); font-size: .85em; }
.prose blockquote {
  margin: 1.6em 0; padding: 14px 20px; border-left: 2.5px solid var(--pri);
  background: var(--bg-soft); border-radius: 0 10px 10px 0; color: var(--text-2);
  font-family: var(--serif); font-size: 16px;
}
.prose blockquote p { margin: 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }
.prose code {
  font-family: var(--mono); font-size: .86em; background: var(--pri-soft);
  color: var(--pri-ink); padding: .16em .42em; border-radius: 5px;
}
.prose pre.code {
  margin: 1.5em 0; padding: 18px 20px; border-radius: 11px; overflow-x: auto;
  background: #1b211e; border: 1px solid #2a322e;
}
html[data-theme="dark"] .prose pre.code { background: #0e1210; }
.prose pre.code code { background: none; color: #d7ded9; font-size: 13px; line-height: 1.75; padding: 0; }
.prose img { border-radius: 10px; margin: 1.6em auto; }
.prose .table-wrap { overflow-x: auto; margin: 1.6em 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; }
.prose th, .prose td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.prose th { font-family: var(--sans); font-size: 12.5px; font-weight: 600; color: var(--muted); background: var(--bg-soft); }

/* 目录 */
.article__toc { position: relative; }
.toc { position: sticky; top: 90px; font-size: 12.5px; }
.toc__title { display: block; font-size: 11px; letter-spacing: .08em; color: var(--faint); margin-bottom: 12px; }
.toc nav { display: grid; gap: 1px; border-left: 1px solid var(--line); }
.toc a {
  display: block; padding: 5px 0 5px 12px; color: var(--faint); line-height: 1.55;
  border-left: 2px solid transparent; margin-left: -1px; transition: .16s ease;
}
.toc a:hover { color: var(--text-2); }
.toc a.is-active { color: var(--pri-ink); border-left-color: var(--pri); font-weight: 500; }
.toc__l3 { padding-left: 22px !important; font-size: 12px; }
.toc__foot { margin-top: 14px; padding-left: 12px; }
.toc__foot a { font-size: 11.5px; color: var(--faint); }
.toc__foot a:hover { color: var(--pri); }

/* FAQ */
.faq { margin-top: 46px; padding-top: 26px; border-top: 1px solid var(--line); }
.faq h2 { font-size: 19px; margin-bottom: 14px; }
.faq__item { border-bottom: 1px solid var(--line-soft); padding: 12px 0; }
.faq__item summary { cursor: pointer; font-size: 14.5px; color: var(--text); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; color: var(--faint); font-family: var(--mono); }
.faq__item[open] summary::after { content: "−"; }
.faq__item p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.85; }

.article__tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 36px; }
.article__tags .tag-link { border: 1px solid var(--line); border-radius: 999px; padding: 4px 11px; font-size: 12px; color: var(--muted); }
.article__tags .tag-link:hover { border-color: var(--pri); color: var(--pri-ink); background: var(--pri-soft); }

.article__pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 44px; padding-top: 26px; border-top: 1px solid var(--line); }
.article__pager-item { display: grid; gap: 5px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; transition: .16s ease; background: var(--card); }
.article__pager-item:hover { border-color: var(--pri); background: var(--pri-soft); }
.article__pager-item span { font-size: 11px; color: var(--faint); display: inline-flex; align-items: center; gap: 4px; }
.article__pager-item b { font-size: 13.5px; font-weight: 500; line-height: 1.5; }
.article__pager-item--next { text-align: right; }
.article__pager-item--next span { justify-content: flex-end; }

.related { margin-top: 52px; }
.related h2 { font-size: 19px; margin-bottom: 18px; }
.related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.related__card { display: grid; gap: 9px; }
.related__cover { border-radius: 10px; overflow: hidden; aspect-ratio: 16 / 9; background: var(--pri-soft); }
.related__cover svg { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related__card:hover .related__cover svg { transform: scale(1.05); }
.related__card b { font-size: 14px; font-weight: 500; line-height: 1.5; }
.related__card:hover b { color: var(--pri-ink); }
.related__card span { font-size: 11px; color: var(--faint); }

/* 评论 */
.comments { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); }
.comments__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 22px; }
.comments__head h2 { font-size: 19px; }
.comments__head h2 i { font-family: var(--mono); font-size: 12px; color: var(--faint); font-style: normal; margin-left: 4px; }
.comments__head span { font-size: 11.5px; color: var(--faint); }
.comments__empty { font-size: 13px; color: var(--faint); padding: 10px 0 24px; }
.comment-list { display: grid; gap: 18px; margin-bottom: 30px; }
.comment { display: grid; grid-template-columns: 32px 1fr; gap: 12px; }
.comment .avatar { width: 32px; height: 32px; font-size: 13px; }
.comment__head { display: flex; align-items: center; gap: 10px; margin-bottom: 3px; }
.comment__head b { font-size: 13.5px; font-weight: 600; }
.comment__head span { font-size: 11px; color: var(--faint); }
.comment p { font-size: 14px; color: var(--text-2); line-height: 1.8; }

.comment-form { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.comment-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 6px; margin-bottom: 13px; }
.field > span { font-size: 12px; color: var(--muted); }
.field input, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--card);
  padding: 9px 12px; font-size: 13.5px; outline: none; transition: .16s ease; resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--pri); box-shadow: 0 0 0 3px color-mix(in oklab, var(--pri) 12%, transparent); }
.comment-form__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.comment-form__note { font-size: 11.5px; color: var(--faint); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%);
  z-index: 90; display: inline-flex; align-items: center; gap: 8px;
  background: var(--text); color: var(--bg); border-radius: 999px;
  padding: 10px 18px; font-size: 13px; box-shadow: 0 16px 40px -18px rgba(0, 0, 0, .6);
  animation: toast-in .24s ease;
}
.toast--inline { position: static; transform: none; margin: 0 0 16px; animation: none; }
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* --------------------------------------------------------------------------
   归档 / 搜索 / 404 / 页脚
   -------------------------------------------------------------------------- */

.archive-head { padding: 46px 0 34px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.archive-head__crumb { display: flex; gap: 8px; font-size: 11.5px; color: var(--faint); margin-bottom: 14px; }
.archive-head__crumb .on { color: var(--pri); }
.archive-head h1 { font-size: clamp(26px, 3.6vw, 34px); margin-bottom: 8px; }
.archive-head p { font-size: 14px; color: var(--muted); }
.archive-head__count { margin-top: 14px; font-size: 12px; color: var(--faint); }
.archive-head__count b { color: var(--text-2); font-family: var(--mono); }

.archive-list { display: grid; }
.archive-row {
  display: grid; grid-template-columns: 92px minmax(0, 1fr) 116px; gap: 20px;
  align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--line-soft);
  transition: .16s ease;
}
.archive-row:hover { background: linear-gradient(90deg, var(--bg-soft), transparent 65%); }
.archive-row time { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }
.archive-row__main b { display: block; font-family: var(--serif); font-size: 16.5px; font-weight: 500; letter-spacing: -.01em; margin-bottom: 3px; }
.archive-row:hover .archive-row__main b { color: var(--pri-ink); }
.archive-row__main span { font-size: 12.5px; color: var(--faint); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.archive-row__meta { display: flex; flex-direction: column; gap: 2px; text-align: right; font-size: 11px; color: var(--faint); }

.search-head { padding: 46px 0 26px; }
.search-head h1 { font-size: 30px; margin-bottom: 18px; }
.search-head__form {
  display: flex; align-items: center; gap: 10px; max-width: 620px;
  border: 1px solid var(--line); border-radius: 11px; background: var(--card); padding: 0 6px 0 14px; height: 48px;
}
.search-head__form input { flex: 1; border: 0; outline: none; background: none; font-size: 14.5px; }
.search-head__meta { margin-top: 14px; font-size: 12.5px; color: var(--faint); }
.search-head__meta b { color: var(--text); font-family: var(--mono); }
.search-results { display: grid; }
.search-result { padding: 18px 0; border-bottom: 1px solid var(--line-soft); }
.search-result__head { display: flex; align-items: center; gap: 10px; margin-bottom: 5px; }
.search-result__head b { font-family: var(--serif); font-size: 17px; font-weight: 500; }
.search-result:hover b { color: var(--pri-ink); }
.search-result p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.search-result__meta { display: flex; align-items: center; gap: 8px; margin-top: 6px; font-size: 11px; color: var(--faint); }
.search-result__meta > i { width: 1px; height: 9px; background: var(--line); flex: 0 0 auto; }

.notfound { padding: 90px 0 60px; max-width: 560px; }
.notfound__code { font-family: var(--mono); font-size: 13px; letter-spacing: .2em; color: var(--pri); margin-bottom: 14px; }
.notfound h1 { font-size: 34px; margin-bottom: 12px; }
.notfound__text { font-size: 15px; color: var(--muted); line-height: 1.85; }
.notfound__actions { display: flex; gap: 10px; margin-top: 24px; }
.notfound__more { margin-top: 46px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--faint); }
.notfound__more ul { margin-top: 10px; display: grid; gap: 6px; }
.notfound__more a { color: var(--text-2); }
.notfound__more a:hover { color: var(--pri); }

.page-view { padding-top: 26px; padding-bottom: 60px; }
.page-view__head { margin-bottom: 30px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.page-view__head h1 { font-size: clamp(26px, 3.4vw, 34px); }
.page-view__meta { margin-top: 8px; font-size: 12px; color: var(--faint); }
.page-view__layout { max-width: 760px; }

.site-foot { border-top: 1px solid var(--line); margin-top: 40px; background: var(--bg-soft); }
.site-foot__inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; padding: 46px 24px 34px; }
.site-foot__brand b { font-family: var(--serif); font-size: 17px; }
.site-foot__brand p { font-size: 12.5px; color: var(--faint); margin-top: 8px; line-height: 1.8; max-width: 34ch; }
.site-foot__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.site-foot__cols > div { display: grid; gap: 7px; align-content: start; }
.site-foot__cols span { font-size: 11px; letter-spacing: .06em; color: var(--faint); margin-bottom: 4px; }
.site-foot__cols a { font-size: 12.5px; color: var(--muted); }
.site-foot__cols a:hover { color: var(--pri); }
.site-foot__bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 24px 26px; border-top: 1px solid var(--line-soft);
  font-size: 11.5px; color: var(--faint); flex-wrap: wrap;
}
.site-foot__meta { display: flex; gap: 14px; }
.site-foot__meta a:hover { color: var(--pri); }

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .layout-2col { grid-template-columns: minmax(0, 1fr) 260px; gap: 40px; }
  .article__layout { grid-template-columns: minmax(0, 1fr) 190px; gap: 44px; }
  .article__layout.is-single { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .site-nav { display: none; }
  .icon-btn--menu { display: grid; }
  .layout-2col { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .side-col { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; padding-top: 0; }
  .side-col .side-card--sub { grid-column: 1 / -1; }
  .article__layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .article__toc { order: -1; }
  .toc { position: static; }
  .toc nav { border-left: 0; display: flex; flex-wrap: wrap; gap: 6px; }
  .toc a { border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font-size: 11.5px; }
  .toc a.is-active { border-color: var(--pri); background: var(--pri-soft); }
  .toc__l3 { display: none !important; }
  .toc__foot { display: none; }
  .feature { grid-template-columns: 1fr; }
  .feature__cover { min-height: 210px; aspect-ratio: 16 / 9; }
  .feature__body { padding: 24px; }
  .related__grid { grid-template-columns: repeat(2, 1fr); }
  .site-foot__inner { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .wrap { padding: 0 18px; }
  .hero { padding: 38px 0 30px; }
  .hero__title { font-size: 27px; }
  .hero__desc { font-size: 14.5px; }
  .hero__meta { flex-wrap: wrap; gap: 10px; }
  .post-row { grid-template-columns: 108px minmax(0, 1fr); gap: 14px; padding: 18px 0; }
  .post-row__title { font-size: 16.5px; }
  .post-row__excerpt { -webkit-line-clamp: 2; font-size: 13px; }
  .post-row__foot { display: none; }
  .article__title { font-size: 25px; }
  .article__excerpt { font-size: 15px; }
  .prose { font-size: 16px; line-height: 1.9; }
  .prose h2 { font-size: 21px; }
  .article__cover { aspect-ratio: 16 / 10; margin-bottom: 28px; }
  .article__pager { grid-template-columns: 1fr; }
  .article__pager-item--next { text-align: left; }
  .related__grid { grid-template-columns: 1fr; }
  .comment-form__row { grid-template-columns: 1fr; }
  .side-col { grid-template-columns: 1fr; }
  .archive-row { grid-template-columns: 1fr; gap: 6px; }
  .archive-row__meta { flex-direction: row; gap: 12px; text-align: left; }
  .site-foot__cols { grid-template-columns: repeat(2, 1fr); }
  .search-head { padding: 30px 0 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* ==========================================================================
   v1.1：页面模板（历史文章 / 标签云 / 网站地图 / 留言板）
   ========================================================================== */

.drawer__nav a.on { background: var(--pri-soft); color: var(--pri-ink); font-weight: 500; }

.kicker {
  display: inline-block; font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 8px;
}
.page-view__head--wide { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.page-view__lead { margin-top: 8px; font-size: 14px; color: var(--muted); max-width: 620px; line-height: 1.75; }
.page-view__stat { text-align: right; display: grid; gap: 2px; }
.page-view__stat b { font-family: var(--serif); font-size: 32px; font-weight: 600; line-height: 1; color: var(--pri-ink); }
.page-view__stat span { font-size: 11.5px; color: var(--faint); }
.page-view__intro { max-width: 720px; margin-bottom: 34px; color: var(--muted); font-size: 14px; }

/* 历史文章 */
.year-timeline { display: grid; gap: 34px; max-width: 860px; }
.year-block__head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.year-block__head h2 { font-family: var(--serif); font-size: 26px; letter-spacing: -.02em; color: var(--pri-ink); }
.year-block__head span { font-size: 11.5px; color: var(--faint); font-family: var(--mono); }
.year-list { list-style: none; margin: 0; padding: 0; }
.year-list li {
  display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; gap: 14px; align-items: baseline;
  padding: 9px 0; border-bottom: 1px dashed var(--line-soft);
}
.year-list li:last-child { border-bottom: 0; }
.year-list time { font-family: var(--mono); font-size: 11px; color: var(--faint); }
.year-list a { font-size: 14.5px; color: var(--text); transition: color .16s; }
.year-list a:hover { color: var(--pri); }
.year-list__meta { font-size: 11px; color: var(--faint); white-space: nowrap; }

/* 标签云 */
.tag-cloud {
  display: flex; flex-wrap: wrap; gap: 14px 18px; align-items: center;
  padding: 28px 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--card);
  max-width: 860px;
}
.tag-cloud__item {
  display: inline-flex; align-items: baseline; gap: 6px; line-height: 1.15;
  color: var(--text-2); padding: 3px 7px; border-radius: 8px; transition: .16s;
}
.tag-cloud__item:hover { background: var(--pri-soft); color: var(--pri-ink); }
.tag-cloud__item i {
  font-style: normal; font-family: var(--mono); font-size: 10px; color: var(--faint);
  background: color-mix(in oklab, var(--bg) 55%, var(--card));
  border: 1px solid var(--line); border-radius: 999px; padding: 0 5px; line-height: 15px;
}
.tag-cloud__item:hover i { border-color: var(--pri); color: var(--pri-ink); }

/* 网站地图 */
.sitemap-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 920px; margin-bottom: 34px; }
.sitemap-card { border: 1px solid var(--line); border-radius: 12px; background: var(--card); padding: 18px 20px; }
.sitemap-card h2 { font-size: 13px; font-family: var(--sans); font-weight: 600; color: var(--faint); letter-spacing: .06em; margin-bottom: 10px; }
.sitemap-card h2:not(:first-child) { margin-top: 18px; }
.sitemap-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.sitemap-card li a { font-size: 13.5px; display: flex; justify-content: space-between; gap: 10px; color: var(--text-2); }
.sitemap-card li a:hover { color: var(--pri); }
.sitemap-card li i { font-style: normal; font-family: var(--mono); font-size: 10.5px; color: var(--faint); }
.sitemap-articles { max-width: 920px; }
.sitemap-articles > h2 { font-size: 13px; font-family: var(--sans); color: var(--faint); letter-spacing: .06em; margin-bottom: 14px; }
.sitemap-year { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 14px; padding: 10px 0; border-top: 1px dashed var(--line-soft); }
.sitemap-year > b { font-family: var(--mono); font-size: 12px; color: var(--pri-ink); padding-top: 2px; }
.sitemap-year ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 5px; }
.sitemap-year a { font-size: 13.5px; color: var(--text-2); }
.sitemap-year a:hover { color: var(--pri); }

/* 留言板 */
.guestbook__head { display: flex; align-items: center; gap: 14px; }
.guestbook__mark {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--pri-soft); color: var(--pri-ink); flex: 0 0 auto;
}
.guestbook__grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 40px; align-items: start; }
.guestbook__intro { color: var(--muted); font-size: 14px; }
.guestbook__panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; }
.guestbook__panel .comments { margin-top: 0; }
.guestbook__panel .comment-form { border-top: 1px dashed var(--line); padding-top: 18px; }

@media (max-width: 880px) {
  .guestbook__grid { grid-template-columns: 1fr; gap: 24px; }
  .sitemap-grid { grid-template-columns: 1fr; }
  .page-view__stat { text-align: left; }
  .year-list li { grid-template-columns: 44px minmax(0, 1fr); }
  .year-list__meta { display: none; }
  .tag-cloud { padding: 20px 16px; }
}

.guestbook__tips { list-style: none; margin: 22px 0 0; padding: 16px 18px; border: 1px dashed var(--line); border-radius: 10px; display: grid; gap: 9px; }
.guestbook__tips li { display: flex; gap: 8px; align-items: flex-start; font-size: 12.5px; color: var(--muted); }
.guestbook__tips .ico { color: var(--pri); flex: 0 0 auto; margin-top: 3px; }