:root {
  --bo-paper: #d9e4dc;
  --bo-ink: #1b2b22;
  --bo-rust: #b4441f;
  --bo-rust-deep: #963816;
  --bo-ivory: #fbf8ef;
  --bo-line: #b9c9bd;
  --bo-sub: #f3f7f3;
  --bo-mute: #4a5d50;
  --bo-r-big: 25px;
  --bo-r-small: 5px;
  --bo-cjk: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --bo-latin: "Maiandra GD", "Corbel", sans-serif;
  color-scheme: light;
}

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

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

body {
  margin: 0;
  background: var(--bo-paper);
  color: var(--bo-ink);
  font-family: var(--bo-cjk);
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: break-word;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--bo-ink); text-decoration-color: var(--bo-rust); text-decoration-thickness: 2px; text-underline-offset: 4px; }
a:hover { color: var(--bo-rust-deep); }

:focus-visible { outline: 3px solid var(--bo-rust); outline-offset: 3px; border-radius: 3px; }

.bo-skip {
  position: absolute; left: 12px; top: -60px; z-index: 10;
  background: var(--bo-ink); color: var(--bo-ivory); padding: 10px 16px; border-radius: var(--bo-r-small);
  min-height: 44px; display: inline-flex; align-items: center;
}
.bo-skip:focus { top: 8px; color: var(--bo-ivory); }

.bo-main:focus { outline: none; }

/* ---------- 页头 ---------- */
.bo-top { border-bottom: 1px solid var(--bo-line); background: var(--bo-paper); }
.bo-top-in {
  max-width: 1180px; margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 12px;
}
.bo-brand { display: inline-flex; align-items: center; min-height: 44px; color: var(--bo-ink); text-decoration: none; }
.bo-logo { display: block; width: 132px; height: 36px; }
.bo-nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.bo-nav-list a {
  display: inline-flex; align-items: center; min-height: 44px; min-width: 44px; justify-content: center;
  padding: 0 12px; text-decoration: none; font-size: 16px; border-radius: var(--bo-r-small);
}
.bo-nav-list a:hover { background: var(--bo-sub); color: var(--bo-ink); }
.bo-nav-list a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--bo-rust); }

/* ---------- 首页首屏：钥匙环 ---------- */
.bo-hero {
  max-width: 1180px; margin: 0 auto; padding: 36px 32px 40px;
  display: grid; grid-template-columns: minmax(0, 1fr) 540px; column-gap: 40px;
  grid-template-areas: "biao huan" "dao huan" "tui huan"; align-items: start;
}
.bo-hero-biao {
  grid-area: biao; margin: 12px 0 0;
  font-size: 82px; line-height: 1.08; font-weight: 800; letter-spacing: -0.01em;
  line-break: strict; text-wrap: balance;
}
.bo-duan { display: inline-block; }
.bo-hero-dao { grid-area: dao; margin: 22px 0 0; font-size: 18px; color: var(--bo-mute); max-width: 30em; }
.bo-hero-huan { grid-area: huan; }

.bo-huan { position: relative; width: 520px; height: 282px; margin: 0 auto; }
.bo-huan-quan {
  position: absolute; left: 185px; top: 4px; width: 150px; height: 150px; border-radius: 50%;
  border: 16px solid var(--bo-ink);
  box-shadow: inset 2px 3px 0 rgba(251, 248, 239, .28), 0 3px 0 rgba(27, 43, 34, .12);
}
.bo-sheng {
  position: absolute; width: 2px; background: var(--bo-ink); transform-origin: 1px 0;
}
.bo-diao {
  position: absolute; transform-origin: 50% 0;
  background: var(--bo-ivory); border: 2px solid var(--bo-ink); border-radius: var(--bo-r-small);
  padding: 17px 14px 6px; font-size: 15px; line-height: 1.3; white-space: nowrap;
  box-shadow: 2px 3px 0 rgba(27, 43, 34, .14);
}
.bo-diao::before {
  content: ""; position: absolute; left: 50%; top: 5px; width: 9px; height: 9px; margin-left: -4.5px;
  border-radius: 50%; border: 2px solid var(--bo-ink); background: var(--bo-paper);
}
.bo-diao-c, .bo-diao-d, .bo-diao-e { font-family: var(--bo-latin); font-size: 16px; }

.bo-sheng-e { left: 193.3px; top: 84.8px; height: 116px; transform: rotate(77.5deg); }
.bo-diao-e { left: 80px; top: 110px; transform: translateX(-50%) rotate(-8deg); }
.bo-sheng-a { left: 205.1px; top: 117.4px; height: 94.6px; transform: rotate(52.5deg); }
.bo-diao-a { left: 130px; top: 175px; transform: translateX(-50%) rotate(6deg); }
.bo-sheng-b { left: 231.7px; top: 139.7px; height: 86.5px; transform: rotate(18deg); }
.bo-diao-b { left: 205px; top: 222px; transform: translateX(-50%) rotate(-4deg); }
.bo-sheng-c { left: 293.5px; top: 137px; height: 77.2px; transform: rotate(-28.2deg); }
.bo-diao-c { left: 330px; top: 205px; transform: translateX(-50%) rotate(5deg); }
.bo-sheng-d { left: 323px; top: 101.9px; height: 108.3px; transform: rotate(-63.6deg); }
.bo-diao-d { left: 420px; top: 150px; transform: translateX(-50%) rotate(-7deg); }
.bo-sheng-z { left: 259px; top: 146px; height: 136px; }

/* 码牌：环下最宽的一枚牌子 */
.bo-pai {
  position: relative; background: var(--bo-ivory); border: 2px solid var(--bo-ink);
  border-radius: var(--bo-r-big); padding: 34px 28px 22px;
  box-shadow: 4px 6px 0 rgba(27, 43, 34, .16);
}
.bo-pai-shouye { width: 460px; max-width: 100%; margin: 0 auto; }
.bo-pai-kong {
  position: absolute; left: 50%; top: 10px; width: 16px; height: 16px; margin-left: -8px;
  border-radius: 50%; border: 2px solid var(--bo-ink); background: var(--bo-paper);
}
.bo-pai-ming { margin: 0; font-size: 15px; color: var(--bo-mute); }
.bo-pai-hang { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 2px; }
.bo-pai-ma {
  font-family: var(--bo-latin); font-size: 40px; font-weight: 700; letter-spacing: .06em; line-height: 1.2;
  color: var(--bo-ink); border-bottom: 3px solid var(--bo-rust);
}
.bo-fuzhi {
  font: inherit; font-size: 16px; min-height: 44px; min-width: 88px; padding: 0 18px; cursor: pointer;
  background: var(--bo-rust); color: var(--bo-ivory); border: 2px solid var(--bo-ink); border-radius: var(--bo-r-small);
}
.bo-fuzhi:hover { background: var(--bo-rust-deep); }
.bo-fuzhi.bo-is-done { background: var(--bo-ink); }
.bo-pai-shuo { margin: 12px 0 0; font-size: 15px; line-height: 1.7; }
.bo-pai-qu {
  display: flex; align-items: center; justify-content: center; min-height: 48px; margin-top: 16px;
  background: var(--bo-ink); color: var(--bo-ivory); text-decoration: none; border-radius: var(--bo-r-small);
  font-size: 17px; font-weight: 700; padding: 8px 16px;
}
.bo-pai-qu:hover { color: var(--bo-ivory); background: #2c4336; }
.bo-pai-pi { margin: 10px 0 0; font-size: 14px; line-height: 1.7; color: var(--bo-mute); }
.bo-pai-pi a { display: inline-flex; align-items: center; min-height: 44px; margin-left: 4px; }

/* 推荐入口 */
.bo-tuijian {
  grid-area: tui; margin-top: 28px; padding: 22px 26px; max-width: 34em;
  background: var(--bo-ivory); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big);
}
.bo-tuijian-biao { margin: 0; font-size: 15px; color: var(--bo-rust-deep); font-weight: 700; }
.bo-tuijian-ti { display: inline-block; margin-top: 6px; font-size: 22px; line-height: 1.45; font-weight: 700; line-break: strict; }
.bo-tuijian-yu { margin: 10px 0 0; font-size: 16px; }
.bo-tuijian-shu { margin: 8px 0 0; font-size: 14px; color: var(--bo-mute); text-align: right; }

/* 首页下方 */
.bo-shou-wen { max-width: 1180px; margin: 0 auto; padding: 8px 32px 56px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 40px; }
.bo-shou-wen > h2 { grid-column: 1 / -1; }
.bo-shou-wen h2 { font-size: 26px; line-height: 1.35; margin: 28px 0 0; line-break: strict; text-wrap: balance; }
.bo-shou-wen h2::before {
  content: ""; display: inline-block; width: 15px; height: 15px; margin-right: 12px; vertical-align: 1px;
  border: 4px solid var(--bo-ink); border-radius: 50%;
}
.bo-shou-wen p, .bo-shou-wen ul { margin: 0; max-width: 38em; }
.bo-shou-wen > * { grid-column: 1 / -1; }
.bo-shou-wen ul { padding-left: 1.2em; }
.bo-shou-wen li { margin: 6px 0; }
.bo-shou-lie { padding: 6px 0 0; }
.bo-shou-geng a { display: inline-flex; align-items: center; min-height: 44px; }

.bo-card-list { list-style: none; margin: 18px 0 0; padding: 0; }
.bo-card {
  background: var(--bo-ivory); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big);
  padding: 20px 24px; margin-bottom: 14px; max-width: 46em;
}
.bo-card-ti { font-size: 20px; font-weight: 700; line-height: 1.5; display: inline-block; padding: 6px 0; }
.bo-card-yao { margin: 6px 0 0; font-size: 16px; }
.bo-card-ri { margin: 6px 0 0; font-size: 14px; color: var(--bo-mute); }

/* ---------- 面包屑 ---------- */
.bo-xie { display: flex; flex-wrap: wrap; align-items: center; font-size: 15px; color: var(--bo-mute); }
.bo-xie a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 4px; }
.bo-xie a { min-width: 44px; justify-content: center; }
.bo-foot-links a { min-width: 44px; }
.bo-xie-fen { padding: 0 6px; }
.bo-xie-ben { display: inline-flex; align-items: center; min-height: 44px; padding: 0 4px; }

/* ---------- 文章页 ---------- */
.bo-wen { max-width: 1180px; margin: 0 auto; padding: 20px 32px 48px; }
.bo-wen-tou { max-width: 980px; }
.bo-wen-h1 {
  margin: 10px 0 0; font-size: 58px; line-height: 1.16; font-weight: 800; letter-spacing: -0.01em;
  line-break: strict; text-wrap: balance;
}
.bo-shuming { display: flex; flex-wrap: wrap; gap: 4px 0; margin-top: 18px; font-size: 15px; color: var(--bo-mute); }
.bo-shuming span { padding-right: 14px; margin-right: 14px; border-right: 1px solid var(--bo-line); }
.bo-shuming span:last-child { border-right: 0; }

.bo-fengmian { margin: 28px 0 0; max-width: 980px; }
.bo-fengmian img { border-radius: var(--bo-r-big); border: 2px solid var(--bo-ink); }
.bo-fengmian figcaption { margin-top: 8px; font-size: 14px; color: var(--bo-mute); }

.bo-wen-ti { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 40px; margin-top: 36px; align-items: start; }
.bo-mulu-wai { position: sticky; top: 16px; }
.bo-mulu { background: var(--bo-sub); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big); padding: 8px 18px 12px; }
.bo-mulu summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 700; font-size: 16px; }
.bo-mulu-list { list-style: none; margin: 4px 0 0; padding: 0; counter-reset: bo-m; }
.bo-mulu-list li { counter-increment: bo-m; border-top: 1px dashed var(--bo-line); }
.bo-mulu-list a {
  display: flex; gap: 10px; align-items: baseline; min-height: 44px; padding: 10px 0; font-size: 15px; line-height: 1.5; text-decoration: none;
}
.bo-mulu-list a::before {
  content: counter(bo-m); flex: none; font-family: var(--bo-latin); font-size: 13px; width: 22px; height: 22px; line-height: 18px; text-align: center;
  border: 2px solid var(--bo-ink); border-radius: 50%;
}
.bo-mulu-list a:hover { color: var(--bo-rust-deep); }

.bo-zheng {
  background: var(--bo-ivory); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big);
  padding: 36px 44px 40px; min-width: 0;
}
.bo-zheng > * { max-width: 38em; }
.bo-zheng p, .bo-zheng li { line-height: 1.9; }
.bo-zheng p { margin: 0 0 1.1em; }
.bo-zheng h2 {
  font-size: 29px; line-height: 1.4; margin: 1.9em 0 .7em; padding-top: 6px; line-break: strict; text-wrap: balance;
  scroll-margin-top: 16px;
}
.bo-zheng h2::before {
  content: ""; display: block; width: 26px; height: 26px; margin-bottom: 10px;
  border: 5px solid var(--bo-ink); border-radius: 50%;
}
.bo-zheng h3 { font-size: 21px; line-height: 1.5; margin: 1.6em 0 .5em; scroll-margin-top: 16px; }
.bo-zheng ol, .bo-zheng ul { padding-left: 1.4em; margin: 0 0 1.1em; }
.bo-zheng li { margin: .35em 0; }
.bo-zheng strong { font-weight: 700; }
.bo-zheng blockquote {
  margin: 1.4em 0; padding: 14px 20px; background: var(--bo-sub); border-left: 5px solid var(--bo-rust); border-radius: 0 var(--bo-r-small) var(--bo-r-small) 0;
}
.bo-zheng blockquote p:last-child { margin-bottom: 0; }
.bo-zheng .bo-jiucuo {
  margin: 1.4em 0; padding: 16px 20px; border: 2px dashed var(--bo-ink); border-radius: var(--bo-r-small); background: var(--bo-sub);
}
.bo-zheng a { word-break: break-all; }

.bo-zheng .bo-pai-jiaocheng { margin: 2.6em 0 1.6em; max-width: 520px; }
.bo-pai-jiaocheng::after {
  content: ""; position: absolute; left: 50%; top: -30px; width: 2px; height: 22px; background: var(--bo-ink);
}

.bo-tu { margin: 1.6em 0; }
.bo-tu img { border: 1px solid var(--bo-line); border-radius: var(--bo-r-small); background: #fff; }
.bo-tu figcaption { margin-top: 8px; font-size: 14px; line-height: 1.7; color: var(--bo-mute); }

.bo-biao-wai { overflow-x: auto; margin: 1.4em 0 1.6em; border: 1px solid var(--bo-line); border-radius: var(--bo-r-small); background: var(--bo-sub); max-width: 100%; }
.bo-zheng > .bo-biao-wai { max-width: 100%; }
.bo-biao { border-collapse: collapse; width: 100%; min-width: 600px; font-size: 15px; line-height: 1.7; }
.bo-biao th, .bo-biao td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--bo-line); }
.bo-biao thead th { background: var(--bo-ink); color: var(--bo-ivory); font-weight: 700; }
.bo-biao tbody tr:last-child th, .bo-biao tbody tr:last-child td { border-bottom: 0; }
.bo-biao tbody th { font-weight: 400; width: 8.5em; }
.bo-xiaopai {
  position: relative; display: inline-block; padding: 3px 10px 3px 22px; background: var(--bo-ivory);
  border: 2px solid var(--bo-ink); border-radius: var(--bo-r-small); font-weight: 700; font-size: 14px; line-height: 1.5;
}
.bo-xiaopai::before {
  content: ""; position: absolute; left: 7px; top: 50%; width: 8px; height: 8px; margin-top: -4px;
  border-radius: 50%; border: 2px solid var(--bo-ink); background: var(--bo-paper);
}

/* 问答与去处 */
.bo-wenda, .bo-quchu { max-width: 980px; margin: 36px 0 0 290px; }
.bo-wenda h2 { font-size: 28px; line-height: 1.4; margin: 0 0 8px; line-break: strict; }
.bo-wenda-tiao { border-top: 2px dashed var(--bo-line); padding: 16px 0 6px; max-width: 40em; }
.bo-wenda-tiao h3 { margin: 0; font-size: 19px; line-height: 1.5; }
.bo-wenda-tiao p { margin: 8px 0 0; line-height: 1.85; }
.bo-quchu { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 24px; background: var(--bo-sub); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big); }
.bo-quchu-ming { margin: 0 0 8px; font-weight: 700; }
.bo-quchu-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.bo-quchu-list span, .bo-quchu-list a { display: inline-flex; align-items: center; min-height: 36px; padding: 2px 12px; border: 2px solid var(--bo-ink); border-radius: var(--bo-r-small); background: var(--bo-ivory); font-size: 15px; }
.bo-quchu-links { list-style: none; margin: 0; padding: 0; }
.bo-quchu-links a { display: inline-flex; align-items: center; min-height: 44px; }

/* ---------- 站务页、列表页、搜索、404 ---------- */
.bo-ye { max-width: 860px; margin: 0 auto; padding: 20px 32px 56px; }
.bo-ye-h1 { margin: 8px 0 0; font-size: 46px; line-height: 1.2; font-weight: 800; line-break: strict; text-wrap: balance; }
.bo-ye-ri { margin-top: 10px; font-size: 14px; color: var(--bo-mute); }
.bo-ye-zheng, .bo-lie-dao {
  margin-top: 26px; background: var(--bo-ivory); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big); padding: 30px 36px;
}
.bo-ye-zheng > *, .bo-lie-dao > * { max-width: 38em; }
.bo-ye-zheng p, .bo-ye-zheng li { line-height: 1.9; }
.bo-ye-zheng p { margin: 0 0 1em; }
.bo-ye-zheng h2 { font-size: 23px; line-height: 1.45; margin: 1.5em 0 .5em; line-break: strict; }
.bo-ye-zheng h2:first-child { margin-top: .2em; }
.bo-ye-zheng ul, .bo-ye-zheng ol { padding-left: 1.3em; }
.bo-ye-zheng a { word-break: break-all; }
.bo-lie-dao p { margin: 0; line-height: 1.9; }
.bo-lie-shu { margin: 22px 0 0; font-size: 15px; color: var(--bo-mute); }
.bo-lie-tong { margin: 8px 0 0; color: var(--bo-mute); }
.bo-fanye { display: flex; align-items: center; gap: 16px; margin-top: 18px; }
.bo-fanye a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px; border: 2px solid var(--bo-ink); border-radius: var(--bo-r-small); background: var(--bo-ivory); text-decoration: none; }
.bo-pai-qiang { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.bo-pai-qiang-shu { margin-left: 6px; color: var(--bo-mute); font-size: 14px; }
.bo-que-qu { list-style: none; padding: 0; }
.bo-que-qu a { display: inline-flex; align-items: center; min-height: 44px; }

.bo-sou-kuang { margin-top: 24px; }
.bo-sou-ming { display: block; font-size: 15px; margin-bottom: 8px; }
.bo-sou-ru {
  width: 100%; font: inherit; font-size: 18px; min-height: 52px; padding: 8px 16px;
  border: 2px solid var(--bo-ink); border-radius: var(--bo-r-small); background: var(--bo-ivory); color: var(--bo-ink);
}
.bo-sou-zhuang { margin: 10px 0 0; font-size: 15px; color: var(--bo-mute); }
.bo-sou-jie { list-style: none; padding: 0; margin: 12px 0 0; }
.bo-sou-jie li { background: var(--bo-ivory); border: 1px solid var(--bo-line); border-radius: var(--bo-r-big); padding: 14px 20px; margin-bottom: 10px; }
.bo-sou-jie a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; }
.bo-sou-jie p { margin: 0; font-size: 15px; }

/* ---------- 页脚 ---------- */
.bo-foot { background: var(--bo-ink); color: var(--bo-ivory); margin-top: 24px; }
.bo-foot-in { max-width: 1180px; margin: 0 auto; padding: 36px 32px 28px; }
.bo-foot a { color: var(--bo-ivory); text-decoration-color: #e9a184; }
.bo-foot a:hover { color: #f6d8c8; }
.bo-foot-brand { display: inline-flex; min-height: 44px; align-items: center; text-decoration: none; }
.bo-foot-say { margin: 8px 0 0; font-size: 15px; line-height: 1.75; max-width: 40em; }
.bo-foot-say a { display: inline-flex; align-items: center; min-height: 44px; }
.bo-foot-links { list-style: none; margin: 18px 0 0; padding: 14px 0 0; border-top: 1px solid #3c5245; display: flex; flex-wrap: wrap; gap: 0 22px; }
.bo-foot-links a { display: inline-flex; align-items: center; min-height: 44px; font-size: 15px; }
.bo-foot-year { margin: 12px 0 0; font-size: 14px; color: #c9d5cc; font-family: var(--bo-latin); }

/* ---------- 窄屏 ---------- */
@media (max-width: 999px) {
  .bo-hero { grid-template-columns: minmax(0, 1fr); grid-template-areas: "biao" "huan" "tui" "dao"; padding: 16px 16px 28px; }
  .bo-hero-biao { font-size: 42px; line-height: 1.15; margin-top: 4px; }
  .bo-hero-huan { margin-top: 14px; }
  .bo-tuijian { margin-top: 18px; padding: 16px 18px; max-width: none; }
  .bo-tuijian-ti { font-size: 19px; }
  .bo-tuijian-yu { font-size: 15px; }
  .bo-hero-dao { font-size: 16px; margin-top: 18px; }

  .bo-huan { width: 328px; height: 168px; }
  .bo-huan-quan { left: 118px; top: 4px; width: 92px; height: 92px; border-width: 11px; }
  .bo-diao { font-size: 13px; padding: 13px 9px 4px; }
  .bo-diao::before { top: 3px; width: 7px; height: 7px; margin-left: -3.5px; border-width: 1.5px; }
  .bo-diao-c, .bo-diao-d, .bo-diao-e { font-size: 13px; }
  .bo-sheng-e { left: 123.7px; top: 53.5px; height: 69.8px; transform: rotate(79.7deg); }
  .bo-diao-e { left: 55px; top: 66px; }
  .bo-sheng-a { left: 133px; top: 76px; height: 67.1px; transform: rotate(65.4deg); }
  .bo-diao-a { left: 72px; top: 104px; }
  .bo-sheng-b { left: 150.1px; top: 88.1px; height: 51.9px; transform: rotate(27.7deg); }
  .bo-diao-b { left: 126px; top: 134px; }
  .bo-sheng-c { left: 181.1px; top: 86.7px; height: 50px; transform: rotate(-38.2deg); }
  .bo-diao-c { left: 212px; top: 126px; }
  .bo-sheng-d { left: 202.1px; top: 63.9px; height: 73.5px; transform: rotate(-67.5deg); }
  .bo-diao-d { left: 270px; top: 92px; }
  .bo-sheng-z { left: 163px; top: 90.5px; height: 77.5px; }

  .bo-pai { padding: 28px 18px 16px; border-radius: 20px; }
  .bo-pai-kong { top: 7px; width: 14px; height: 14px; margin-left: -7px; }
  .bo-pai-ma { font-size: 32px; }
  .bo-pai-shuo { font-size: 14px; margin-top: 8px; line-height: 1.65; }

  .bo-shou-wen { padding: 0 16px 40px; display: block; }
  .bo-shou-wen h2 { font-size: 22px; margin-top: 30px; }
  .bo-shou-wen p, .bo-shou-wen ul { margin-top: 12px; }

  .bo-wen { padding: 12px 16px 36px; }
  .bo-wen-h1 { font-size: 34px; line-height: 1.25; }
  .bo-shuming { display: block; font-size: 14px; }
  .bo-shuming span { display: inline-block; white-space: nowrap; border-right: 0; padding-right: 0; margin-right: 12px; }
  .bo-fengmian { margin-top: 18px; }
  .bo-fengmian img { border-radius: 16px; }
  .bo-wen-ti { display: block; margin-top: 20px; }
  .bo-mulu-wai { position: static; margin-bottom: 18px; }
  .bo-zheng { padding: 22px 18px 26px; border-radius: 18px; }
  .bo-zheng h2 { font-size: 23px; }
  .bo-zheng h3 { font-size: 19px; }
  .bo-wenda, .bo-quchu { margin: 28px 0 0; }
  .bo-quchu { grid-template-columns: 1fr; padding: 18px; }
  .bo-ye { padding: 12px 16px 40px; }
  .bo-ye-h1 { font-size: 34px; }
  .bo-ye-zheng, .bo-lie-dao { padding: 22px 18px; border-radius: 18px; }
  .bo-foot-in { padding: 28px 16px 22px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .bo-top-in { padding: 0 8px 0 12px; min-height: 58px; }
  .bo-logo { width: 104px; height: 28px; }
  .bo-nav-list a { padding: 0 9px; font-size: 15px; }
  .bo-biao { min-width: 560px; font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

@media print {
  .bo-top, .bo-foot, .bo-mulu-wai, .bo-skip { display: none; }
  body { background: #fff; }
}