/* 创作档案：卷宗柜。纸 = 偏冷的档案灰绿，字 = 墨，链接 = 铁蓝；黄铜 = 最新校准，封蜡红 = 停用 / 出错 */
:root {
  --paper: #eceee9;
  --sheet: #f7f8f5;
  --ink: #1f252b;
  --ink-2: #4b545c;
  --ink-3: #7b838a;
  --rule: #d3d8d0;
  --iron: #2c4a6b;
  --iron-soft: #dfe6ec;
  --brass: #8a6a1f;
  --brass-soft: #f1ead6;
  --wax: #9b2d2a;
  --wax-soft: #f4e1de;
  --add: #e3eedf; --add-ink: #2f5a2a;
  --del: #f4e1de; --del-ink: #8a2b27;
  --serif: 'Noto Serif SC', 'Songti SC', 'Source Han Serif SC', serif;
  --sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --side: 292px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14181c; --sheet: #1a1f24; --ink: #dfe3dd; --ink-2: #aab2b8; --ink-3: #7c858c; --rule: #2c343b;
    --iron: #8fb2d6; --iron-soft: #1f2c39; --brass: #d2b064; --brass-soft: #2a2516; --wax: #e08a83; --wax-soft: #3a1f1d;
    --add: #1d2c1b; --add-ink: #a7d39c; --del: #361d1b; --del-ink: #f0a59d; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #14181c; --sheet: #1a1f24; --ink: #dfe3dd; --ink-2: #aab2b8; --ink-3: #7c858c; --rule: #2c343b;
  --iron: #8fb2d6; --iron-soft: #1f2c39; --brass: #d2b064; --brass-soft: #2a2516; --wax: #e08a83; --wax-soft: #3a1f1d;
  --add: #1d2c1b; --add-ink: #a7d39c; --del: #361d1b; --del-ink: #f0a59d; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 15px/1.6 var(--sans); }
a { color: var(--iron); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--iron); outline-offset: 2px; border-radius: 2px; }
button { font: inherit; color: inherit; }

/* ---------- 侧栏 ---------- */
.side { position: fixed; inset: 0 auto 0 0; width: var(--side); display: flex; flex-direction: column; gap: 14px; padding: 22px 16px 16px 20px; border-right: 1px solid var(--rule); background: var(--paper); overflow: hidden; z-index: 20; }
.brand { display: block; color: var(--ink); text-decoration: none !important; }
.brand-name { display: block; font: 700 22px/1.2 var(--serif); letter-spacing: .08em; }
.brand-sub { display: block; margin-top: 2px; color: var(--ink-3); font-size: 12.5px; letter-spacing: .04em; }
.search input { width: 100%; padding: 8px 11px; border: 1px solid var(--rule); border-radius: 6px; background: var(--sheet); color: var(--ink); font: inherit; font-size: 14px; }
.search input::placeholder { color: var(--ink-3); }
.nav { display: flex; gap: 4px; }
.nav-top { flex: 1; padding: 6px 8px; border-radius: 6px; color: var(--ink-2); font-size: 13.5px; text-align: center; border: 1px solid transparent; }
.nav-top:hover { text-decoration: none; background: var(--sheet); }
.nav-top.is-on { background: var(--sheet); border-color: var(--rule); color: var(--ink); font-weight: 500; }
.tree { flex: 1; overflow: auto; margin: 0 -6px 0 -4px; padding: 0 6px 20px 4px; overscroll-behavior: contain; }
.tree details { margin: 2px 0; }
.tree summary { list-style: none; cursor: pointer; padding: 5px 4px; color: var(--ink-2); font-size: 13px; font-weight: 500; border-radius: 4px; display: flex; justify-content: space-between; align-items: baseline; }
.tree summary::-webkit-details-marker { display: none; }
.tree summary::before { content: '▸'; color: var(--ink-3); font-size: 10px; margin-right: 6px; transition: transform .15s; }
.tree details[open] > summary::before { transform: rotate(90deg); }
.tree summary span { flex: 1; }
.tree summary small { color: var(--ink-3); font-weight: 400; font-size: 11.5px; }
.tree .sub { margin-left: 12px; border-left: 1px solid var(--rule); padding-left: 6px; }
.tree a { display: block; padding: 4px 8px; border-radius: 4px; color: var(--ink); font-size: 13.5px; line-height: 1.45; }
.tree a:hover { text-decoration: none; background: var(--sheet); }
.tree a.is-on { background: var(--iron-soft); color: var(--iron); font-weight: 500; }
.tree a .n { float: right; color: var(--brass); font-size: 11px; margin-left: 6px; }
.source { margin: 0; color: var(--ink-3); font-size: 11.5px; line-height: 1.5; word-break: break-all; }

/* ---------- 主区 ---------- */
.main { margin-left: var(--side); min-height: 100vh; padding: 40px 48px 120px; }
.main:focus { outline: none; }
.loading, .empty { color: var(--ink-3); font-size: 14px; }
.page-head { max-width: 760px; margin: 0 0 28px; }
.page-head h1 { margin: 0; font: 700 28px/1.3 var(--serif); letter-spacing: .02em; }
.page-head p { margin: 6px 0 0; color: var(--ink-2); font-size: 14px; }

/* 档案页：正文 + 右侧导航 */
.doc-grid { display: grid; grid-template-columns: minmax(0, 720px) 220px; gap: 56px; align-items: start; }
.crumbs { color: var(--ink-3); font-size: 12.5px; margin-bottom: 10px; word-break: break-all; }
.crumbs a { color: var(--ink-3); }
.doc-title { margin: 0 0 6px; font: 700 30px/1.3 var(--serif); letter-spacing: .02em; }
.doc-meta { color: var(--ink-3); font-size: 13px; margin-bottom: 26px; }
.doc-meta b { color: var(--brass); font-weight: 500; }

/* 校准便签：一张张按日期叠起来（这一页唯一出挑的东西） */
.notes { margin: 0 0 36px; }
.notes-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.notes-head h2 { margin: 0; font: 600 15px/1.4 var(--sans); color: var(--brass); }
.notes-head button { border: 0; background: none; color: var(--ink-3); font-size: 13px; cursor: pointer; padding: 2px 4px; }
.note { position: relative; margin: 0 0 10px; padding: 14px 18px 12px 18px; background: var(--brass-soft); border-left: 3px solid var(--brass); border-radius: 0 6px 6px 0; }
.note + .note { margin-top: -2px; }
.note-date { display: block; color: var(--brass); font-size: 12.5px; font-weight: 500; margin-bottom: 2px; }
.note-title { margin: 0 0 6px; font: 600 15.5px/1.5 var(--serif); }
.note .md { font-size: 14.5px; }
.note .md p, .note .md li { line-height: 1.75; }
.notes.is-folded .note:nth-child(n + 4) { display: none; }
.note.is-old { background: transparent; border-left-color: var(--rule); }
.note.is-old .note-date { color: var(--ink-3); }

/* Markdown 正文 */
.md { font: 400 16.5px/1.95 var(--serif); color: var(--ink); max-width: 720px; overflow-wrap: anywhere; }
.md h1 { display: none; }
.md h2 { margin: 2.2em 0 .7em; padding-top: .9em; border-top: 1px solid var(--rule); font: 700 20px/1.45 var(--serif); }
.md h3 { margin: 1.8em 0 .5em; font: 700 17px/1.5 var(--serif); }
.md h4 { margin: 1.5em 0 .4em; font: 600 16px/1.5 var(--serif); color: var(--ink-2); }
.md p { margin: .7em 0; }
.md ul, .md ol { padding-left: 1.4em; margin: .5em 0; }
.md li { margin: .25em 0; }
.md li::marker { color: var(--ink-3); }
.md strong { font-weight: 700; }
.md blockquote { margin: 1em 0; padding: .4em 0 .4em 1em; border-left: 2px solid var(--rule); color: var(--ink-2); font-size: 15.5px; }
.md code { font: 13.5px/1.5 ui-monospace, 'Cascadia Mono', Consolas, monospace; background: var(--sheet); padding: 1px 5px; border-radius: 3px; border: 1px solid var(--rule); }
.md pre { background: var(--sheet); border: 1px solid var(--rule); padding: 12px 14px; border-radius: 6px; overflow: auto; }
.md pre code { border: 0; padding: 0; background: none; }
.md hr { border: 0; border-top: 1px solid var(--rule); margin: 2em 0; }
.md hr + h2 { border-top: 0; padding-top: 0; margin-top: 1.2em; }
.md table { border-collapse: collapse; margin: 1em 0; font: 400 14px/1.6 var(--sans); display: block; overflow-x: auto; max-width: 100%; }
.md th, .md td { border: 1px solid var(--rule); padding: 6px 10px; text-align: left; vertical-align: top; }
.md th { background: var(--sheet); font-weight: 500; }
.md a.term { color: inherit; border-bottom: 1px dotted var(--iron); }
.md a.term:hover { color: var(--iron); text-decoration: none; }
.md .stale { background: var(--wax-soft); box-shadow: -10px 0 0 var(--wax-soft), 10px 0 0 var(--wax-soft); border-radius: 2px; }
.md .stale-tag { display: inline-block; margin-right: 6px; padding: 0 5px; border-radius: 3px; background: var(--wax); color: var(--sheet); font: 500 11px/1.6 var(--sans); vertical-align: 2px; }
.md mark { background: var(--brass-soft); color: inherit; padding: 0 2px; border-radius: 2px; }

/* 右侧导航 */
.rail { position: sticky; top: 32px; max-height: calc(100vh - 64px); overflow: auto; font-size: 13px; }
.rail h3 { margin: 0 0 8px; font: 500 12.5px/1.4 var(--sans); color: var(--ink-3); }
.rail section + section { margin-top: 26px; }
.rail ol, .rail ul { list-style: none; margin: 0; padding: 0; }
.rail li a { display: block; padding: 3px 0 3px 10px; border-left: 2px solid var(--rule); color: var(--ink-2); line-height: 1.45; }
.rail li a:hover { color: var(--iron); border-left-color: var(--iron); text-decoration: none; }
.rail li.l3 a { padding-left: 20px; font-size: 12.5px; }
.rail .refs a { border-left: 0; padding-left: 0; }
.rail .refs small { color: var(--ink-3); }

/* ---------- 最近更改 ---------- */
.log { max-width: 820px; }
.commit { border-top: 1px solid var(--rule); padding: 18px 0 16px; }
.commit:first-child { border-top: 0; padding-top: 0; }
.commit-head { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.commit-date { color: var(--ink-3); font-size: 13px; min-width: 7.5em; }
.commit-msg { font: 600 16px/1.5 var(--serif); flex: 1; min-width: 12em; }
.commit-files { margin: 10px 0 0; padding: 0; list-style: none; display: grid; gap: 2px; }
.commit-files li { display: flex; gap: 10px; align-items: baseline; font-size: 13.5px; }
.commit-files .fname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.commit-files .fpath { color: var(--ink-3); font-size: 12px; margin-left: 6px; }
.num { font: 12px/1.4 ui-monospace, Consolas, monospace; white-space: nowrap; }
.num .a { color: var(--add-ink); } .num .d { color: var(--del-ink); }
.more { border: 0; background: none; color: var(--iron); cursor: pointer; padding: 6px 0 0; font-size: 13px; }

/* 差异 */
.diff-file { margin: 26px 0; max-width: 980px; }
.diff-file h2 { font: 600 16px/1.5 var(--serif); margin: 0 0 6px; display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.diff { border: 1px solid var(--rule); border-radius: 6px; overflow: hidden; background: var(--sheet); font: 400 14px/1.75 var(--serif); }
.diff .hunk { padding: 4px 12px; color: var(--ink-3); font: 12px/1.6 ui-monospace, Consolas, monospace; background: var(--paper); border-top: 1px solid var(--rule); }
.diff .hunk:first-child { border-top: 0; }
.diff .ln { padding: 2px 12px 2px 28px; position: relative; white-space: pre-wrap; overflow-wrap: anywhere; }
.diff .ln::before { position: absolute; left: 10px; color: var(--ink-3); }
.diff .ln.a { background: var(--add); } .diff .ln.a::before { content: '+'; color: var(--add-ink); }
.diff .ln.d { background: var(--del); } .diff .ln.d::before { content: '−'; color: var(--del-ink); }
.diff .ln.c { color: var(--ink-2); }
.diff .gap { padding: 2px 12px; color: var(--ink-3); font-size: 12px; text-align: center; background: var(--paper); }
.tag { display: inline-block; padding: 0 6px; border-radius: 3px; font: 500 11.5px/1.7 var(--sans); }
.tag.added { background: var(--add); color: var(--add-ink); } .tag.removed { background: var(--del); color: var(--del-ink); } .tag.modified { background: var(--iron-soft); color: var(--iron); }

/* ---------- 搜索 ---------- */
.hits { max-width: 820px; }
.hit { display: block; padding: 14px 0; border-top: 1px solid var(--rule); color: var(--ink); }
.hit:hover { text-decoration: none; }
.hit:hover .hit-title { color: var(--iron); }
.hit-title { font: 600 16px/1.5 var(--serif); }
.hit-path { color: var(--ink-3); font-size: 12px; margin-left: 8px; }
.hit-snip { margin: 4px 0 0; color: var(--ink-2); font: 400 14px/1.75 var(--serif); }
.hit-snip + .hit-snip { margin-top: 2px; }

/* ---------- 检查 ---------- */
.checks { max-width: 880px; }
.check { margin: 0 0 34px; }
.check h2 { margin: 0 0 4px; font: 700 18px/1.4 var(--serif); display: flex; gap: 10px; align-items: baseline; }
.check h2 .count { font: 500 13px/1 var(--sans); padding: 3px 8px; border-radius: 10px; background: var(--wax-soft); color: var(--wax); }
.check h2 .count.ok { background: var(--add); color: var(--add-ink); }
.check > p { margin: 0 0 10px; color: var(--ink-2); font-size: 14px; }
.check ul { margin: 0; padding: 0; list-style: none; border: 1px solid var(--rule); border-radius: 6px; background: var(--sheet); }
.check li { padding: 8px 14px; border-top: 1px solid var(--rule); font-size: 14px; display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.check li:first-child { border-top: 0; }
.check li .where { flex: 1; min-width: 12em; }
.check li .what { color: var(--ink-2); font-size: 13px; word-break: break-all; }
.check li .bar { display: inline-block; height: 6px; border-radius: 3px; background: var(--brass); vertical-align: middle; margin-right: 6px; }

/* ---------- 窄屏 ---------- */
.bar { display: none; }
.scrim { display: none; }
@media (max-width: 1180px) {
  .doc-grid { grid-template-columns: minmax(0, 720px); gap: 0; }
  .rail { position: static; max-height: none; margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--rule); }
  .rail .toc { display: none; }
}
@media (max-width: 900px) {
  .bar { display: flex; position: sticky; top: 0; z-index: 15; align-items: center; justify-content: space-between; gap: 8px; padding: 10px max(14px, env(safe-area-inset-left)) 10px max(14px, env(safe-area-inset-right)); background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
  .bar-title { font: 700 17px/1 var(--serif); color: var(--ink); letter-spacing: .06em; }
  .bar-title:hover { text-decoration: none; }
  .bar-btn { border: 1px solid var(--rule); background: var(--sheet); border-radius: 6px; padding: 5px 12px; font-size: 13.5px; cursor: pointer; min-height: 34px; }
  .side { transform: translateX(-102%); transition: transform .22s ease; width: min(86vw, 340px); box-shadow: 0 0 40px rgba(0, 0, 0, .18); padding-top: max(22px, env(safe-area-inset-top)); }
  body.is-menu .side { transform: none; }
  body.is-menu .scrim { display: block; position: fixed; inset: 0; z-index: 19; background: rgba(10, 14, 18, .35); }
  .main { margin-left: 0; padding: 22px 18px 100px; }
  .doc-title { font-size: 24px; }
  .md { font-size: 16px; line-height: 1.9; }
  .tree a, .tree summary { padding-top: 7px; padding-bottom: 7px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }