:root {
  --uf-paper: #fff3e8;
  --uf-ink: #2a1f3d;
  --uf-ink-soft: #55466a;
  --uf-purple: #5b2a86;
  --uf-purple-deep: #46206a;
  --uf-apricot: #f59e5b;
  --uf-line: #f0d6c0;
  --uf-surf: #fffaf5;
  --uf-r-lg: 28px;
  --uf-r-sm: 14px;
  --uf-latin: "Tw Cen MT", "Segoe UI", sans-serif;
  --uf-cjk: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --uf-wide: 1180px;
  --uf-read: 38em;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--uf-paper);
  color: var(--uf-ink);
  font-family: var(--uf-cjk);
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: break-word;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--uf-purple); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--uf-purple-deep); text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--uf-purple); outline-offset: 2px; border-radius: 4px; }
.uf-num, .uf-card-code { font-family: var(--uf-latin); }

.uf-skip {
  position: absolute; left: 12px; top: -60px; z-index: 50;
  background: var(--uf-ink); color: var(--uf-paper); padding: 10px 16px; border-radius: var(--uf-r-sm);
}
.uf-skip:focus { top: 12px; color: var(--uf-paper); }

/* 页头 */
.uf-mast { border-bottom: 1px solid var(--uf-line); }
.uf-mast-in {
  max-width: var(--uf-wide); margin: 0 auto; padding: 8px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.uf-brand { display: inline-flex; align-items: center; min-height: 44px; }
.uf-logo { display: block; }
.uf-nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.uf-nav-a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px;
  color: var(--uf-ink); text-decoration: none; border-radius: var(--uf-r-sm); font-size: 15px;
}
.uf-nav-a:hover { background: var(--uf-surf); color: var(--uf-purple); }
.uf-nav-a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--uf-apricot); border-radius: 0; }

.uf-main { display: block; }

/* 首屏 */
.uf-hero { max-width: var(--uf-wide); margin: 0 auto; padding: 26px 24px 8px; }
.uf-asof { margin: 0 0 6px; font-size: 14px; color: var(--uf-ink-soft); }
.uf-h1 {
  margin: 0; font-size: 65px; line-height: 1.12; font-weight: 800; letter-spacing: 0.01em;
  line-break: strict; max-width: 15em;
}
.uf-nb { display: inline-block; white-space: nowrap; }
.uf-lede { margin: 10px 0 0; font-size: 16px; color: var(--uf-ink-soft); }

/* 时间标尺（本站唯一的大动作） */
.uf-line {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  column-gap: 0;
  row-gap: 0;
  position: relative;
}
.uf-seg { position: relative; padding: 0 10px 0 0; grid-row: 1; }
.uf-seg-1 { grid-column: 1; }
.uf-seg-2 { grid-column: 2; }
.uf-seg-3 { grid-column: 3; }
.uf-seg-4 { grid-column: 4; }
.uf-seg-5 { grid-column: 5; }
.uf-seg-6 { grid-column: 6; }
.uf-seg::before {
  content: ""; position: absolute; left: 0; top: -8px; width: 3px; height: 34px; background: var(--uf-ink); border-radius: 2px;
}
.uf-seg-6::after {
  content: ""; position: absolute; right: 0; top: -8px; width: 3px; height: 34px; background: var(--uf-ink); border-radius: 2px;
}
.uf-seg-bar {
  display: block; height: 12px; margin: 3px 0 0 8px; border-radius: 6px; background: var(--uf-apricot);
}
.uf-seg-open .uf-seg-bar {
  background: repeating-linear-gradient(90deg, var(--uf-line) 0 10px, transparent 10px 16px);
}
.uf-seg-a {
  display: flex; flex-direction: column; gap: 2px; margin-top: 12px; padding: 6px 8px 8px 8px; min-height: 44px;
  text-decoration: none; color: var(--uf-ink); border-radius: var(--uf-r-sm);
}
.uf-seg-a:hover { background: var(--uf-surf); color: var(--uf-ink); }
.uf-seg-name { font-weight: 700; font-size: 17px; line-height: 1.4; }
.uf-seg-dur { font-size: 15px; line-height: 1.4; color: var(--uf-purple); font-weight: 600; }
.uf-seg-open .uf-seg-dur { color: var(--uf-ink-soft); font-weight: 400; }

.uf-hang { grid-row: 2; grid-column: 2 / 4; position: relative; padding: 20px 14px 0 0; }
.uf-hang::before {
  content: ""; position: absolute; left: 0; top: -66px; height: 86px; width: 3px; background: var(--uf-ink); border-radius: 2px;
}
.uf-pick { grid-row: 2; grid-column: 4 / 7; padding: 20px 0 0 14px; align-self: start; }
.uf-legend { grid-row: 2; grid-column: 1; margin: 22px 14px 0 0; font-size: 13px; color: var(--uf-ink-soft); line-height: 2; }
.uf-legend-item { display: block; white-space: nowrap; }
.uf-legend-on, .uf-legend-off { display: inline-block; width: 22px; height: 8px; border-radius: 4px; vertical-align: middle; margin-right: 6px; }
.uf-legend-on { background: var(--uf-apricot); }
.uf-legend-off { background: repeating-linear-gradient(90deg, var(--uf-line) 0 6px, transparent 6px 9px); }

/* 码卡 */
.uf-card {
  background: var(--uf-surf); border: 1px solid var(--uf-line); border-radius: var(--uf-r-lg);
  padding: 18px 22px 16px; position: relative;
}
.uf-card-label { margin: 0; font-size: 14px; font-weight: 700; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; }
.uf-card-hint { font-weight: 400; color: var(--uf-ink-soft); font-size: 13px; }
.uf-card-row { display: flex; align-items: center; gap: 14px; margin: 6px 0 4px; flex-wrap: wrap; }
.uf-card-code {
  font-size: 34px; font-weight: 700; letter-spacing: 0.08em; color: var(--uf-purple); line-height: 1.2;
  background: none; padding: 0; user-select: all;
}
.uf-copy {
  min-height: 44px; min-width: 88px; padding: 0 18px; border: 0; border-radius: var(--uf-r-sm);
  background: var(--uf-purple); color: var(--uf-paper); font: inherit; font-size: 15px; font-weight: 700; cursor: pointer;
}
.uf-copy:hover { background: var(--uf-purple-deep); }
.uf-copy-done { background: var(--uf-ink); }
.uf-card-gain { margin: 0; font-size: 16px; font-weight: 600; }
.uf-star { color: var(--uf-purple); font-weight: 700; margin-left: 1px; }
.uf-card-foot { margin: 6px 0 0; font-size: 13px; line-height: 1.6; color: var(--uf-ink-soft); }
.uf-card-note { margin: 8px 0 0; font-size: 14px; line-height: 1.7; color: var(--uf-ink-soft); }
.uf-go {
  display: inline-flex; align-items: center; min-height: 48px; margin-top: 12px; padding: 0 22px;
  background: var(--uf-ink); color: var(--uf-paper); border-radius: var(--uf-r-sm); text-decoration: none; font-weight: 700;
}
.uf-go:hover { background: var(--uf-purple); color: var(--uf-paper); }

.uf-pick-tag { margin: 0; font-size: 14px; color: var(--uf-ink-soft); }
.uf-pick-a { display: inline-block; margin-top: 2px; font-size: 21px; line-height: 1.5; font-weight: 700; }
.uf-pick-why { margin: 6px 0 0; font-size: 15px; line-height: 1.75; color: var(--uf-ink-soft); max-width: 30em; }

/* 首页正文 */
.uf-home-body { max-width: var(--uf-wide); margin: 0 auto; padding: 30px 24px 56px; display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 48px; }
.uf-home-prose { border-top: 1px solid var(--uf-line); padding-top: 8px; }
.uf-home-list { border-top: 1px solid var(--uf-line); padding-top: 8px; }
.uf-h2 { font-size: 22px; margin: 18px 0 10px; line-height: 1.4; }
.uf-more { margin: 14px 0 0; }
.uf-more a { display: inline-flex; align-items: center; min-height: 44px; }

/* 列表行 */
.uf-rows { list-style: none; margin: 0; padding: 0; }
.uf-row { padding: 14px 0; border-bottom: 1px dashed var(--uf-line); }
.uf-row-a { font-size: 18px; font-weight: 700; line-height: 1.55; display: inline-block; padding: 4px 0; }
.uf-row-sum { margin: 4px 0 0; font-size: 15px; color: var(--uf-ink-soft); line-height: 1.75; }
.uf-row-meta { margin: 4px 0 0; font-size: 13px; color: var(--uf-ink-soft); }

/* 正文排版 */
.uf-prose { font-size: 17px; line-height: 1.9; }
.uf-prose > * { max-width: var(--uf-read); }
.uf-prose h2 {
  font-size: 26px; line-height: 1.4; margin: 2.2em 0 0.6em; padding-top: 18px; position: relative; scroll-margin-top: 80px;
}
.uf-prose h2::before {
  content: ""; position: absolute; left: 0; top: 0; width: 44px; height: 6px; border-radius: 3px; background: var(--uf-apricot);
}
.uf-prose h3 { font-size: 20px; line-height: 1.5; margin: 1.8em 0 0.4em; scroll-margin-top: 80px; }
.uf-prose p { margin: 0 0 1.05em; }
.uf-prose ul, .uf-prose ol { padding-left: 1.4em; margin: 0 0 1.1em; }
.uf-prose li { margin: 0.3em 0; }
.uf-prose code {
  font-family: var(--uf-latin); font-size: 0.92em; background: var(--uf-surf); border: 1px solid var(--uf-line);
  padding: 1px 6px; border-radius: 6px; overflow-wrap: anywhere;
}
.uf-prose strong { font-weight: 700; color: var(--uf-ink); }
.uf-prose blockquote { margin: 1.2em 0; padding: 4px 0 4px 18px; border-left: 4px solid var(--uf-apricot); color: var(--uf-ink-soft); }
.uf-prose .uf-card { max-width: 34em; margin: 1.6em 0; }
.uf-prose .uf-card p { margin-bottom: 0; }
.uf-card .uf-card-code { font-size: 34px; border: 0; background: none; padding: 0; border-radius: 0; }
.uf-prose .uf-aside {
  background: var(--uf-surf); border: 1px solid var(--uf-line); border-radius: var(--uf-r-sm); padding: 14px 18px; font-size: 16px;
}
.uf-prose .uf-risk { border-left: 4px solid var(--uf-purple); padding-left: 14px; font-size: 16px; }

.uf-table-wrap { overflow-x: auto; margin: 1.2em 0 1.4em; max-width: var(--uf-read); border: 1px solid var(--uf-line); border-radius: var(--uf-r-sm); background: var(--uf-surf); }
.uf-table { border-collapse: collapse; width: 100%; min-width: 540px; font-size: 15px; line-height: 1.65; }
.uf-table th, .uf-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--uf-line); vertical-align: top; }
.uf-table th { font-weight: 700; background: var(--uf-paper); }
.uf-table tr:last-child td { border-bottom: 0; }

.uf-shot { margin: 1.6em 0; width: fit-content; max-width: min(34em, 100%); }
.uf-shot-frame { display: block; padding: 10px; background: var(--uf-ink); border-radius: var(--uf-r-sm); }
.uf-shot-frame img { border-radius: 8px; margin: 0 auto; }
.uf-shot-cap { margin-top: 8px; font-size: 14px; line-height: 1.7; color: var(--uf-ink-soft); }

/* 文章页 */
.uf-art-wrap, .uf-plain-wrap { max-width: var(--uf-wide); margin: 0 auto; padding: 8px 24px 56px; }
.uf-crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; font-size: 14px; }
.uf-crumbs li { display: inline-flex; align-items: center; }
.uf-crumbs li + li::before { content: "/"; margin: 0 8px; color: var(--uf-ink-soft); }
.uf-crumbs a, .uf-crumbs span { display: inline-flex; align-items: center; min-height: 44px; }
.uf-crumbs span { color: var(--uf-ink-soft); }
.uf-art-h1 { font-size: 44px; line-height: 1.25; margin: 6px 0 10px; line-break: strict; max-width: 22em; }
.uf-byline { margin: 0 0 18px; font-size: 14px; color: var(--uf-ink-soft); }
.uf-gap { display: inline-block; width: 1.2em; }
.uf-by-item { white-space: nowrap; }

.uf-mini {
  position: sticky; top: 0; z-index: 10; background: var(--uf-paper); border-bottom: 1px solid var(--uf-line);
  margin: 0 -24px 22px; padding: 6px 24px;
}
.uf-mini-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); }
.uf-mini-seg { border-left: 2px solid var(--uf-ink); }
.uf-mini-seg:last-child { border-right: 2px solid var(--uf-ink); }
.uf-mini-a {
  display: flex; flex-direction: column; justify-content: center; min-height: 44px; padding: 2px 8px;
  text-decoration: none; color: var(--uf-ink); border-top: 5px solid var(--uf-apricot); line-height: 1.35;
}
.uf-mini-seg.uf-seg-open .uf-mini-a { border-top-color: var(--uf-line); }
.uf-mini-name { font-size: 13px; font-weight: 700; }
.uf-mini-dur { font-size: 13px; color: var(--uf-ink-soft); }
.uf-mini-a:hover, .uf-mini-a:target { background: var(--uf-surf); }
.uf-mini-a.uf-mini-on { background: var(--uf-purple); color: var(--uf-paper); border-top-color: var(--uf-purple); }
.uf-mini-a.uf-mini-on .uf-mini-dur { color: var(--uf-line); }

.uf-cover { margin: 0 0 22px; max-width: 46em; }
.uf-cover img { border-radius: var(--uf-r-lg); border: 1px solid var(--uf-line); }
.uf-cover figcaption { font-size: 14px; color: var(--uf-ink-soft); margin-top: 8px; }

.uf-toc {
  max-width: var(--uf-read); background: var(--uf-surf); border: 1px solid var(--uf-line); border-radius: var(--uf-r-lg);
  padding: 16px 24px 12px; margin: 0 0 10px;
}
.uf-toc-h { margin: 0 0 4px; font-weight: 700; font-size: 15px; }
.uf-toc-list { margin: 0; padding-left: 1.5em; font-size: 15px; line-height: 1.6; }
.uf-toc-list li { padding: 5px 0; }
.uf-toc-list a { display: inline; }

.uf-faq { max-width: var(--uf-read); margin-top: 40px; border-top: 3px solid var(--uf-ink); padding-top: 6px; }
.uf-faq-h { font-size: 24px; margin: 14px 0 6px; }
.uf-faq-list { margin: 0; }
.uf-faq-item { padding: 14px 0; border-bottom: 1px dashed var(--uf-line); }
.uf-faq-q { font-weight: 700; font-size: 17px; line-height: 1.6; }
.uf-faq-a { margin: 6px 0 0; font-size: 16px; line-height: 1.85; }

.uf-art-end { max-width: var(--uf-read); margin-top: 36px; }
.uf-tags-h, .uf-next-h { margin: 0 0 8px; font-weight: 700; font-size: 15px; }
.uf-tags-list { list-style: none; margin: 0 0 22px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.uf-tag { display: inline-flex; align-items: center; min-height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--uf-line); background: var(--uf-surf); font-size: 14px; }
.uf-tag-plain { color: var(--uf-ink-soft); }
.uf-next ul { margin: 0 0 20px; padding-left: 1.3em; }
.uf-next a { display: inline-flex; align-items: center; min-height: 44px; }
.uf-author { font-size: 14px; color: var(--uf-ink-soft); border-top: 1px solid var(--uf-line); padding-top: 14px; }

/* 站务页 / 列表页 */
.uf-plain-h1 { font-size: 40px; line-height: 1.3; margin: 8px 0 8px; line-break: strict; }
.uf-plain-date { margin: 0 0 18px; font-size: 14px; color: var(--uf-ink-soft); }
.uf-list-intro { margin-bottom: 8px; }
.uf-count { font-size: 15px; color: var(--uf-ink-soft); margin: 10px 0 0; }
.uf-list-main { max-width: var(--uf-read); }
.uf-pages { display: flex; gap: 16px; align-items: center; margin-top: 18px; }
.uf-pages-a { display: inline-flex; align-items: center; min-height: 44px; }
.uf-syn { color: var(--uf-ink-soft); font-size: 14px; }
.uf-us-more { max-width: var(--uf-read); margin-top: 34px; border-top: 1px solid var(--uf-line); padding-top: 10px; }
.uf-us-more ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0 18px; }
.uf-us-more a { display: inline-flex; align-items: center; min-height: 44px; font-size: 15px; }

/* 搜索 */
.uf-find { max-width: var(--uf-read); margin: 10px 0 6px; }
.uf-find-label { display: block; font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.uf-find-row { display: flex; gap: 10px; flex-wrap: wrap; }
.uf-find-q {
  flex: 1 1 220px; min-height: 48px; padding: 0 14px; font: inherit; font-size: 16px; color: var(--uf-ink);
  background: var(--uf-surf); border: 2px solid var(--uf-line); border-radius: var(--uf-r-sm);
}
.uf-find-q:focus { border-color: var(--uf-purple); }
.uf-find-btn {
  min-height: 48px; padding: 0 20px; border: 0; border-radius: var(--uf-r-sm); background: var(--uf-purple); color: var(--uf-paper);
  font: inherit; font-weight: 700; cursor: pointer;
}
.uf-find-state { color: var(--uf-ink-soft); font-size: 15px; }
.uf-find-out { max-width: var(--uf-read); }

/* 404 */
.uf-lost-num { font-size: 80px; font-weight: 800; color: var(--uf-apricot); margin: 20px 0 0; line-height: 1; }
.uf-lost-list a { display: inline-flex; align-items: center; min-height: 44px; }

/* 页脚 */
.uf-foot { background: var(--uf-surf); border-top: 1px solid var(--uf-line); }
.uf-foot-in { max-width: var(--uf-wide); margin: 0 auto; padding: 28px 24px 30px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 10px 48px; }
.uf-foot-own { margin: 8px 0 0; font-size: 14px; line-height: 1.75; color: var(--uf-ink-soft); max-width: 34em; }
.uf-foot-own a { display: inline-block; padding: 10px 0; margin: -10px 0; }
.uf-foot-nav ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; }
.uf-foot-nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 15px; }
.uf-foot-rss, .uf-foot-copy { margin: 0; font-size: 14px; color: var(--uf-ink-soft); }
.uf-foot-rss a { display: inline-flex; align-items: center; min-height: 44px; }

/* 平板 */
@media (max-width: 1060px) {
  .uf-h1 { font-size: 52px; }
  .uf-home-body { grid-template-columns: minmax(0, 1fr); gap: 20px; }
}

/* 手机：标尺改竖向 */
@media (max-width: 760px) {
  .uf-mast-in { padding: 4px 16px; gap: 8px; }
  .uf-logo { width: 104px; height: 28px; }
  .uf-nav-a { padding: 0 9px; font-size: 15px; }
  .uf-hero { padding: 14px 16px 6px; }
  .uf-asof { font-size: 13px; margin-bottom: 2px; }
  .uf-h1 { font-size: 36px; line-height: 1.2; }
  .uf-lede { font-size: 14px; margin-top: 6px; }
  .uf-line { display: block; margin: 12px 0 0 6px; padding-left: 18px; border-left: 3px solid var(--uf-ink); }
  .uf-seg { padding: 0; }
  .uf-seg::before { left: -26px; top: 15px; width: 13px; height: 13px; border-radius: 50%; background: var(--uf-apricot); border: 3px solid var(--uf-ink); }
  .uf-seg-open::before { background: var(--uf-paper); }
  .uf-seg-6::after { display: none; }
  .uf-seg-bar { display: none; }
  .uf-seg-a { flex-direction: row; justify-content: space-between; align-items: center; gap: 10px; margin: 0; padding: 4px 6px; min-height: 44px; }
  .uf-seg-name { font-size: 16px; }
  .uf-seg-dur { font-size: 14px; text-align: right; }
  .uf-hang { padding: 2px 0 8px; }
  .uf-hang::before { display: none; }
  .uf-card { padding: 12px 16px 12px; border-radius: 22px; }
  .uf-card-row { margin: 2px 0; gap: 12px; }
  .uf-card .uf-card-code { font-size: 28px; }
  .uf-card-gain { font-size: 15px; }
  .uf-card-foot { margin-top: 4px; }
  .uf-pick { padding: 6px 0 10px; }
  .uf-pick-tag { font-size: 13px; }
  .uf-pick-a { font-size: 17px; line-height: 1.5; }
  .uf-pick-why { display: none; }
  .uf-legend { margin: 6px 0 4px; }
  .uf-legend-item { display: inline-block; margin-right: 14px; }
  .uf-home-body { padding: 18px 16px 40px; }
  .uf-art-wrap, .uf-plain-wrap { padding: 4px 16px 44px; }
  .uf-art-h1 { font-size: 30px; }
  .uf-plain-h1 { font-size: 30px; }
  .uf-mini { margin: 0 -16px 18px; padding: 4px 0; }
  .uf-mini-list { display: flex; overflow-x: auto; scrollbar-width: none; padding: 0 16px; }
  .uf-mini-seg { flex: 0 0 auto; }
  .uf-mini-a { padding: 2px 10px; }
  .uf-mini-dur { display: none; }
  .uf-prose { font-size: 16px; line-height: 1.85; }
  .uf-prose h2 { font-size: 22px; }
  .uf-prose h3 { font-size: 18px; }
  .uf-toc { padding: 14px 18px 10px; border-radius: 22px; }
  .uf-foot-in { grid-template-columns: minmax(0, 1fr); padding: 22px 16px 26px; }
}

@media (prefers-reduced-motion: no-preference) {
  .uf-nav-a, .uf-seg-a, .uf-copy, .uf-go, .uf-mini-a { transition: background-color 0.15s ease, color 0.15s ease; }
  html { scroll-behavior: smooth; }
}