:root{
  --brand:#d6006f;
  --brand-dark:#9f0757;
  --brand-soft:#fff2f8;
  --brand-line:#ffd2e6;
  --accent:#2563eb;
  --accent-soft:#eff6ff;
  --safe:#047857;
  --safe-soft:#ecfdf5;
  --warn:#b45309;
  --warn-soft:#fffbeb;
  --danger:#b91c1c;
  --danger-soft:#fef2f2;
  --ink:#111827;
  --text:#374151;
  --sub:#6b7280;
  --muted:#9ca3af;
  --line:#e5e7eb;
  --soft:#f7f8fb;
  --card:#ffffff;
  --shadow:0 14px 32px rgba(17,24,39,.08);
  --radius:8px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:#fff;
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  line-height:1.72;
  letter-spacing:0;
}
a{color:inherit}
.skip-link{
  position:absolute;
  left:16px;
  top:-44px;
  z-index:80;
  padding:8px 12px;
  border-radius:var(--radius);
  background:var(--ink);
  color:#fff;
  text-decoration:none;
}
.skip-link:focus{top:12px}
.topbar{
  position:sticky;
  top:0;
  z-index:40;
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(14px);
}
.topbar-inner{
  width:min(100%,1120px);
  margin:0 auto;
  padding:12px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.brand{
  display:flex;
  align-items:center;
  min-width:0;
  gap:10px;
  color:var(--ink);
  text-decoration:none;
}
.brand img{
  width:36px;
  height:36px;
  object-fit:contain;
  flex:0 0 auto;
}
.brand-title{
  display:block;
  font-size:15px;
  font-weight:900;
  line-height:1.2;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand-sub{
  display:block;
  margin-top:2px;
  font-size:11px;
  color:var(--sub);
  line-height:1.2;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.nav-links{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:8px;
  flex-wrap:wrap;
}
.nav-links a,
.pill-btn{
  min-height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:7px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  color:var(--sub);
  font-size:12px;
  font-weight:800;
  text-decoration:none;
  cursor:pointer;
}
.nav-links a:hover,
.pill-btn:hover{
  border-color:var(--brand-line);
  color:var(--brand);
}
.page{
  width:min(100%,1120px);
  margin:0 auto;
  padding:0 20px 56px;
}
.hero{
  padding:48px 0 30px;
  border-bottom:1px solid var(--line);
}
.kicker{
  width:max-content;
  max-width:100%;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:12px;
  font-weight:900;
}
.dot{
  width:8px;
  height:8px;
  border-radius:999px;
  background:var(--brand);
  box-shadow:0 0 0 5px rgba(214,0,111,.1);
  flex:0 0 auto;
}
h1{
  max-width:850px;
  margin:16px 0 12px;
  color:var(--ink);
  font-size:clamp(32px,4.8vw,56px);
  line-height:1.06;
  letter-spacing:0;
}
.lead{
  max-width:760px;
  margin:0;
  color:var(--sub);
  font-size:16px;
}
.hero-actions{
  margin-top:22px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.mobile-teacher{
  display:none;
}
.teacher-question label{
  display:block;
  color:var(--ink);
  font-size:13px;
  font-weight:950;
}
.teacher-search-row{
  margin-top:8px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:8px;
}
.teacher-search-row input{
  width:100%;
  min-height:42px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:9px 11px;
  color:var(--ink);
  font:inherit;
  outline:none;
}
.teacher-search-row input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(214,0,111,.1);
}
.teacher-search-row button,
.teacher-quick-row button{
  min-height:42px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  color:var(--ink);
  padding:8px 11px;
  font-size:12px;
  font-weight:950;
  cursor:pointer;
}
.teacher-quick-row{
  margin-top:10px;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
}
.teacher-quick-row button.is-active{
  border-color:var(--brand);
  background:var(--brand-soft);
  color:var(--brand-dark);
}
.teacher-result{
  margin-top:12px;
  padding:12px;
  border:1px solid var(--brand-line);
  border-radius:var(--radius);
  background:linear-gradient(180deg,#fff,var(--brand-soft));
}
.teacher-result h2{
  margin:8px 0 10px;
  color:var(--ink);
  font-size:18px;
  line-height:1.28;
}
.teacher-result-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
}
.teacher-result-grid > div{
  min-width:0;
  padding:10px;
  border:1px solid rgba(255,210,230,.92);
  border-radius:var(--radius);
  background:#fff;
}
.teacher-result-grid strong{
  display:block;
  color:var(--brand-dark);
  font-size:12px;
  font-weight:950;
}
.teacher-result-grid p{
  margin:5px 0 0;
  color:var(--text);
  font-size:12px;
  line-height:1.55;
  overflow-wrap:anywhere;
}
.teacher-actions{
  margin-top:6px;
  display:grid;
  gap:6px;
}
.teacher-actions .primary-btn,
.teacher-actions .secondary-btn{
  min-height:34px;
  width:100%;
  padding:7px 9px;
  font-size:11px;
  box-shadow:none;
}
.primary-btn,
.secondary-btn{
  min-height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:9px 14px;
  border-radius:var(--radius);
  font-size:13px;
  font-weight:900;
  text-decoration:none;
  border:1px solid transparent;
  cursor:pointer;
}
.primary-btn{
  background:var(--brand);
  color:#fff;
  box-shadow:0 12px 24px rgba(214,0,111,.18);
}
.secondary-btn{
  background:#fff;
  color:var(--ink);
  border-color:var(--line);
}
.primary-btn:hover{background:var(--brand-dark)}
.secondary-btn:hover{border-color:var(--brand-line);color:var(--brand)}
.summary-grid,
.tutorial-grid,
.topic-grid,
.role-grid,
.contact-grid,
.link-grid,
.shortcut-grid,
.rules-grid{
  display:grid;
  gap:14px;
}
.summary-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin-top:22px}
.tutorial-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.role-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.contact-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.shortcut-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.rules-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.metric,
.card,
.tutorial-step,
.shortcut-card,
.rule-card,
.topic-card,
.contact-card,
.article-card,
.notice,
.tool-panel,
.guide-panel,
.guide-result,
.coach-panel{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card);
}
.metric{
  padding:14px;
}
.metric .num{
  color:var(--ink);
  font-size:22px;
  font-weight:950;
  line-height:1.1;
}
.metric .label{
  margin-top:6px;
  color:var(--sub);
  font-size:12px;
  font-weight:800;
}
.section{
  padding:34px 0 0;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:16px;
}
.section h2,
.article h2{
  margin:0;
  color:var(--ink);
  font-size:24px;
  line-height:1.2;
}
.section-desc{
  max-width:720px;
  margin:8px 0 0;
  color:var(--sub);
  font-size:14px;
}
.tool-panel{
  padding:16px;
  box-shadow:var(--shadow);
}
.search-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:10px;
  align-items:center;
}
.search-input{
  width:100%;
  min-height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:10px 12px;
  color:var(--ink);
  font:inherit;
  outline:none;
}
.search-input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(214,0,111,.1);
}
.filter-row{
  margin-top:12px;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.filter-btn{
  min-height:34px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  padding:6px 10px;
  color:var(--sub);
  font-size:12px;
  font-weight:900;
  cursor:pointer;
}
.filter-btn.is-active{
  background:var(--ink);
  color:#fff;
  border-color:var(--ink);
}
.result-line{
  min-height:22px;
  margin-top:10px;
  color:var(--sub);
  font-size:12px;
}
.smart-guide-layout{
  display:grid;
  grid-template-columns:minmax(0,1.02fr) minmax(320px,.98fr);
  gap:16px;
  align-items:start;
}
.guide-advanced{
  min-width:0;
}
.guide-advanced > summary{
  display:none;
}
.mobile-fold-toggle{
  display:none;
}
.guide-panel,
.guide-result,
.coach-panel{
  padding:18px;
  box-shadow:var(--shadow);
}
.guide-choice-group + .guide-choice-group{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.guide-choice-title{
  color:var(--ink);
  font-size:13px;
  font-weight:950;
}
.guide-choice-row{
  margin-top:10px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.guide-choice{
  min-height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  padding:7px 11px;
  color:var(--text);
  font-size:12px;
  font-weight:900;
  cursor:pointer;
}
.guide-choice:hover{
  border-color:var(--brand-line);
  color:var(--brand);
}
.guide-choice.is-active{
  border-color:var(--brand);
  background:var(--brand-soft);
  color:var(--brand-dark);
}
.guide-choice.danger-choice.is-active{
  border-color:#fecaca;
  background:var(--danger-soft);
  color:var(--danger);
}
.guide-result{
  position:sticky;
  top:74px;
}
.guide-result-head h3,
.coach-panel h3{
  margin:10px 0 8px;
  color:var(--ink);
  font-size:20px;
  line-height:1.25;
}
.guide-result-head p,
.coach-panel p,
.guide-result-note,
.material-note{
  margin:0;
  color:var(--sub);
  font-size:13px;
}
.coach-step-list{
  counter-reset:guide-step;
  margin:16px 0 0;
  padding:0;
  list-style:none;
  display:grid;
  gap:10px;
}
.coach-step{
  counter-increment:guide-step;
  position:relative;
  min-height:34px;
  padding:9px 10px 9px 42px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--soft);
  color:var(--text);
  font-size:13px;
  line-height:1.55;
}
.coach-step:before{
  content:counter(guide-step);
  position:absolute;
  left:10px;
  top:10px;
  width:22px;
  height:22px;
  border-radius:999px;
  display:grid;
  place-items:center;
  background:var(--brand);
  color:#fff;
  font-size:11px;
  font-weight:950;
}
.material-checklist{
  margin-top:14px;
  padding:12px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
}
.material-title{
  color:var(--ink);
  font-size:12px;
  font-weight:950;
}
.material-chip{
  display:inline-flex;
  max-width:100%;
  margin:8px 6px 0 0;
  padding:5px 8px;
  border-radius:999px;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:11px;
  font-weight:900;
  overflow-wrap:anywhere;
}
.material-note{
  margin-top:10px;
}
.quick-entry-row{
  margin-top:14px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.quick-entry-row .primary-btn,
.quick-entry-row .secondary-btn{
  min-height:38px;
  padding:8px 11px;
  font-size:12px;
  box-shadow:none;
}
.guide-result-note{
  margin-top:12px;
}
.coach-panel{
  margin-top:18px;
}
.coach-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
}
.coach-progress{
  flex:0 0 auto;
  min-height:30px;
  display:inline-flex;
  align-items:center;
  padding:5px 9px;
  border-radius:999px;
  background:var(--safe-soft);
  color:var(--safe);
  font-size:11px;
  font-weight:950;
}
.coach-material-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px;
  margin-top:12px;
}
.coach-material{
  min-width:0;
  display:flex;
  align-items:flex-start;
  gap:8px;
  padding:9px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--soft);
  color:var(--text);
  font-size:13px;
  line-height:1.45;
  cursor:pointer;
}
.coach-material input{
  flex:0 0 auto;
  width:16px;
  height:16px;
  margin-top:2px;
  accent-color:var(--brand);
}
.coach-material span{
  min-width:0;
  overflow-wrap:anywhere;
}
.coach-note{
  margin-top:12px;
  padding:11px 12px;
  border-radius:var(--radius);
  background:var(--warn-soft);
  color:var(--warn);
  font-size:13px;
  font-weight:800;
}
.coach-panel .quick-entry-row{
  margin-top:12px;
}
.coach-more{
  margin-top:12px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  overflow:hidden;
}
.coach-more summary,
.mobile-more-entries summary{
  min-height:38px;
  padding:9px 11px;
  cursor:pointer;
  list-style:none;
  color:var(--ink);
  font-size:13px;
  font-weight:950;
  background:var(--soft);
}
.coach-more summary::-webkit-details-marker,
.mobile-more-entries summary::-webkit-details-marker{
  display:none;
}
.coach-more summary:after,
.mobile-more-entries summary:after{
  content:"展开";
  float:right;
  color:var(--brand);
  font-size:12px;
}
.coach-more[open] summary:after,
.mobile-more-entries[open] summary:after{
  content:"收起";
}
.coach-more-body,
.mobile-more-grid{
  padding:10px;
}
.topic-card,
.card,
.tutorial-step,
.shortcut-card,
.rule-card,
.contact-card,
.article-card{
  padding:18px;
  text-decoration:none;
}
.tutorial-step,
.shortcut-card,
.rule-card{
  min-width:0;
}
.topic-card{
  display:flex;
  flex-direction:column;
  min-height:190px;
}
.topic-card:hover,
.tutorial-step:hover,
.shortcut-card:hover,
.rule-card:hover,
.card:hover,
.contact-card:hover{
  border-color:var(--brand-line);
  box-shadow:var(--shadow);
}
.tutorial-step{
  position:relative;
  overflow:hidden;
  min-height:210px;
  padding-top:46px;
}
.tutorial-step:before{
  content:"";
  position:absolute;
  inset:0 0 auto;
  height:4px;
  background:var(--brand);
}
.tutorial-step.danger:before{
  background:var(--danger);
}
.step-index{
  position:absolute;
  left:18px;
  top:16px;
  color:var(--brand);
  font-size:12px;
  font-weight:950;
  letter-spacing:0;
}
.tutorial-step.danger .step-index{
  color:var(--danger);
}
.shortcut-card,
.rule-card{
  min-height:168px;
}
.topic-top{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
}
.tag{
  display:inline-flex;
  align-items:center;
  width:max-content;
  max-width:100%;
  padding:4px 8px;
  border-radius:999px;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:11px;
  font-weight:900;
}
.tag.warn{background:var(--warn-soft);color:var(--warn)}
.tag.safe{background:var(--safe-soft);color:var(--safe)}
.tag.danger{background:var(--danger-soft);color:var(--danger)}
.topic-card h3,
.card h3,
.tutorial-step h3,
.shortcut-card h3,
.rule-card h3,
.contact-card h3{
  margin:12px 0 8px;
  color:var(--ink);
  font-size:18px;
  line-height:1.25;
  overflow-wrap:anywhere;
}
.topic-card p,
.card p,
.tutorial-step p,
.shortcut-card p,
.rule-card p,
.contact-card p{
  margin:0;
  color:var(--sub);
  font-size:13px;
  overflow-wrap:anywhere;
}
.topic-card ul,
.card ul{
  margin:14px 0 0;
  padding:0;
  list-style:none;
  color:var(--text);
  font-size:13px;
}
.topic-card li,
.card li{
  position:relative;
  padding-left:14px;
  margin-top:6px;
}
.topic-card li:before,
.card li:before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--brand);
}
.topic-link{
  margin-top:auto;
  padding-top:16px;
  color:var(--brand);
  font-size:13px;
  font-weight:900;
}
.notice{
  padding:16px;
  background:var(--warn-soft);
  border-color:#fde68a;
}
.notice.danger{
  background:var(--danger-soft);
  border-color:#fecaca;
}
.notice.safe{
  background:var(--safe-soft);
  border-color:#bbf7d0;
}
.notice-title{
  margin:0 0 8px;
  color:var(--ink);
  font-weight:950;
}
.notice p{
  margin:0;
  color:var(--text);
  font-size:13px;
}
.toc-layout{
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  gap:24px;
  align-items:start;
}
.side-nav{
  position:sticky;
  top:72px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:14px;
}
.side-nav-title{
  color:var(--ink);
  font-size:13px;
  font-weight:950;
}
.side-nav a{
  display:block;
  margin-top:8px;
  padding:7px 8px;
  border-radius:var(--radius);
  color:var(--sub);
  font-size:12px;
  font-weight:800;
  text-decoration:none;
}
.side-nav a:hover{
  background:var(--brand-soft);
  color:var(--brand-dark);
}
.article{
  min-width:0;
}
.article-card{
  margin-bottom:14px;
}
.article-card h2{
  margin-bottom:10px;
}
.article-card h3{
  margin:18px 0 8px;
  color:var(--ink);
  font-size:16px;
}
.article-card p{
  margin:8px 0 0;
}
.article-card ul,
.article-card ol{
  margin:10px 0 0;
  padding-left:22px;
}
.article-card li{
  margin-top:6px;
}
.step-list{
  counter-reset:step;
  margin:12px 0 0;
  padding:0;
  list-style:none;
}
.step-list li{
  counter-increment:step;
  position:relative;
  min-height:34px;
  margin-top:10px;
  padding-left:44px;
}
.step-list li:before{
  content:counter(step);
  position:absolute;
  left:0;
  top:0;
  width:28px;
  height:28px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--brand);
  color:#fff;
  font-size:12px;
  font-weight:950;
}
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
}
.check-box{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:12px;
  background:var(--soft);
}
.check-box strong{
  display:block;
  color:var(--ink);
  margin-bottom:6px;
}

.business-policy-doc .page{
  width:min(100%,980px);
}
.business-policy-doc .hero{
  padding:28px 0 18px;
}
.business-policy-doc h1{
  max-width:760px;
  margin:12px 0 8px;
  font-size:clamp(28px,3.2vw,40px);
  line-height:1.12;
}
.business-policy-doc .lead{
  max-width:860px;
  font-size:14px;
  line-height:1.58;
}
.privacy-doc.business-policy-doc .privacy-meta{
  gap:6px;
  margin-top:10px;
}
.privacy-doc.business-policy-doc .privacy-meta span{
  min-height:24px;
  padding:3px 8px;
  font-size:11px;
}
.privacy-doc.business-policy-doc .notice-strip{
  gap:6px;
  margin-top:10px;
}
.privacy-doc.business-policy-doc .notice-strip .notice{
  padding:8px 10px;
  font-size:12px;
  line-height:1.5;
}
.business-policy-doc .section{
  padding-top:18px;
}
.business-policy-doc .toc-layout{
  gap:16px;
}
.business-policy-doc .article-card{
  padding:14px;
  margin-bottom:10px;
  border-radius:10px;
}
.business-policy-doc .article-card h2{
  margin-bottom:6px;
  font-size:18px;
  line-height:1.25;
}
.business-policy-doc .article-card p{
  color:var(--text);
  font-size:13px;
  line-height:1.56;
}
.business-policy-doc .side-nav a.is-current{
  background:var(--brand-soft);
  color:var(--brand-dark);
  box-shadow:inset 3px 0 0 var(--brand);
}
.business-policy-doc .policy-toolbar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:6px;
  margin-bottom:8px;
}
.business-policy-doc .policy-toolbar .secondary-btn{
  width:auto;
  min-height:30px;
  padding:5px 10px;
  font-size:11px;
  text-decoration:none;
}
.business-policy-doc .policy-toolbar-note{
  flex:1 1 220px;
  min-width:0;
  color:var(--sub);
  font-size:11px;
  font-weight:800;
  line-height:1.45;
}
.policy-brief{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:7px;
  margin:8px 0 0;
  padding:0;
  list-style:none;
}
.policy-brief li{
  min-width:0;
  margin:0;
  padding:8px 9px;
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--soft);
  color:var(--sub);
  font-size:11px;
  line-height:1.45;
}
.policy-brief strong{
  display:block;
  margin-bottom:3px;
  color:var(--ink);
  font-size:12px;
}
.policy-brief span{
  display:block;
}
.business-policy-doc .policy-note{
  margin-top:8px;
  padding:7px 9px;
  border-radius:8px;
  background:#fff7ed;
  border:1px solid rgba(251,146,60,.28);
  color:#9a3412;
  font-size:11px;
  line-height:1.45;
}
.policy-detail{
  margin-top:8px;
  border:1px solid rgba(99,102,241,.18);
  border-radius:8px;
  background:#fff;
  overflow:hidden;
}
.policy-detail summary{
  cursor:pointer;
  min-height:32px;
  padding:7px 10px;
  color:var(--brand-dark);
  background:linear-gradient(135deg,#f8fafc 0%,#eef2ff 100%);
  font-size:12px;
  font-weight:950;
  list-style:none;
}
.policy-detail summary::-webkit-details-marker{
  display:none;
}
.policy-detail summary:after{
  content:"展开";
  float:right;
  color:var(--sub);
  font-size:11px;
  font-weight:800;
}
.policy-detail[open] summary:after{
  content:"收起";
}
.policy-detail-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:6px;
  padding:8px;
}
.policy-detail-grid div{
  min-width:0;
  padding:8px;
  border:1px solid rgba(226,232,240,.95);
  border-radius:8px;
  background:#f8fafc;
  color:var(--sub);
  font-size:11px;
  line-height:1.5;
}
.policy-detail-grid strong{
  display:block;
  margin-bottom:3px;
  color:var(--ink);
  font-size:12px;
}
.policy-detail-grid span{
  display:block;
}
.policy-detail-grid a{
  color:var(--brand-dark);
  font-weight:850;
  text-decoration:none;
}
.policy-detail-grid a:hover{
  text-decoration:underline;
  text-underline-offset:3px;
}
.contact-strip{
  margin-top:10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  flex-wrap:wrap;
  padding:10px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--soft);
}
.contact-strip strong{
  color:var(--ink);
}
.version-page .topbar-inner{
  padding:9px 18px;
}
body.version-page{
  overflow-x:hidden;
}
.version-page .brand img{
  width:32px;
  height:32px;
}
.version-page .brand-title{
  font-size:14px;
}
.version-page .brand-sub{
  font-size:10px;
}
.version-page .nav-links a{
  min-height:32px;
  padding:5px 10px;
  font-size:11px;
}
.version-page .page{
  width:min(100%,980px);
  padding-bottom:42px;
}
.version-page .hero{
  padding:30px 0 20px;
}
.version-page .kicker{
  padding:5px 9px;
  font-size:11px;
}
.version-page h1{
  max-width:720px;
  margin:13px 0 8px;
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.08;
}
.version-page .lead{
  max-width:700px;
  font-size:14px;
}
.version-page .section{
  padding-top:24px;
}
.version-page .toc-layout{
  grid-template-columns:200px minmax(0,1fr);
  gap:16px;
  min-width:0;
}
.version-page .side-nav{
  top:58px;
  padding:12px;
}
.version-page .article{
  min-width:0;
  width:100%;
}
.version-page .side-nav a{
  margin-top:6px;
  padding:6px 7px;
  font-size:11px;
}
.version-page .article-card{
  margin-bottom:12px;
  padding:14px;
}
.version-page .article-card h2{
  margin-bottom:8px;
  font-size:20px;
}
.version-page .article-card p,
.version-page .article-card li,
.version-page .check-box{
  font-size:13px;
  line-height:1.68;
}
.version-hero{
  padding-bottom:24px;
}
.version-summary{
  margin-top:18px;
  display:grid;
  grid-template-columns:minmax(220px,280px) minmax(0,1fr);
  gap:10px;
  align-items:stretch;
}
.version-summary-main,
.version-summary-meta,
.version-facts{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
}
.version-summary-main{
  display:flex;
  align-items:center;
  gap:12px;
  padding:13px;
  box-shadow:var(--shadow);
}
.version-summary-icon{
  width:34px;
  height:34px;
  object-fit:contain;
  flex:0 0 auto;
}
.version-summary-main span,
.version-summary-meta span,
.version-facts span{
  display:block;
  color:var(--sub);
  font-size:11px;
  font-weight:800;
}
.version-summary-main strong{
  display:block;
  margin-top:4px;
  color:var(--brand);
  font-size:26px;
  line-height:1.1;
}
.version-summary-meta,
.version-facts{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;
  overflow:hidden;
}
.version-page .version-facts{
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.version-summary-meta div,
.version-facts div{
  min-width:0;
  padding:13px;
  background:var(--soft);
}
.version-summary-meta strong,
.version-facts strong{
  display:block;
  margin-top:5px;
  color:var(--ink);
  font-size:14px;
  line-height:1.35;
  overflow-wrap:anywhere;
}
.version-highlight-list{
  display:grid;
  gap:8px;
}
.version-highlight-item{
  position:relative;
  padding:10px 12px 10px 32px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--accent-soft);
  color:var(--text);
  font-size:13px;
}
.version-highlight-item:before{
  content:"";
  position:absolute;
  left:13px;
  top:1.25em;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
}
.version-page .version-stage-grid,
.version-page .version-feature-grid{
  display:grid;
  gap:10px;
}
.version-page .version-stage-grid{
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.version-page .version-feature-grid{
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.version-page .version-stage-item,
.version-page .version-feature-card{
  min-width:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:12px;
  text-decoration:none;
}
.version-page .version-stage-item{
  background:linear-gradient(180deg,#fff,var(--soft));
}
.version-page .version-stage-item span,
.version-page .version-feature-card span{
  display:block;
  color:var(--sub);
  font-size:11px;
  font-weight:900;
  line-height:1.25;
}
.version-page .version-stage-item strong,
.version-page .version-feature-card strong{
  display:block;
  margin-top:5px;
  color:var(--ink);
  font-size:17px;
  line-height:1.25;
  overflow-wrap:anywhere;
}
.version-page .version-stage-item p,
.version-page .version-feature-card p{
  margin:7px 0 0;
  color:var(--text);
  font-size:12px;
  line-height:1.55;
  overflow-wrap:anywhere;
}
.version-page .version-stage-item[data-level="major"]{
  border-color:var(--brand-line);
  background:var(--brand-soft);
}
.version-page .version-stage-item[data-level="minor"]{
  border-color:#bfdbfe;
  background:var(--accent-soft);
}
.version-page .version-stage-item[data-level="patch"]{
  border-color:#bbf7d0;
  background:var(--safe-soft);
}
.version-page .version-feature-card{
  border-color:var(--brand-line);
  background:linear-gradient(180deg,#fff,var(--brand-soft));
}
.version-page .version-feature-card:hover{
  border-color:var(--brand);
  box-shadow:var(--shadow);
}
.version-page .version-section-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  margin-bottom:10px;
}
.version-page .version-section-head h2{
  margin-bottom:6px;
}
.version-page .version-section-head p{
  margin:0;
  color:var(--sub);
  font-size:12px;
  line-height:1.55;
}
.version-page .version-history-actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:8px;
  flex-wrap:wrap;
  flex:0 0 auto;
}
.version-page .version-history-actions .secondary-btn{
  min-height:34px;
  padding:6px 10px;
  font-size:12px;
}
.version-page .version-release-tree,
.version-page .version-minor-list,
.version-page .version-release-list{
  display:grid;
  gap:9px;
}
.version-page .version-major-group,
.version-page .version-minor-group{
  min-width:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  overflow:hidden;
}
.version-page .version-major-group[open]{
  border-color:var(--brand-line);
}
.version-page .version-minor-group{
  background:var(--soft);
}
.version-page .version-minor-list{
  padding:9px;
}
.version-page .version-release-list{
  padding:9px;
}
.version-page .version-group-summary{
  list-style:none;
  min-width:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 12px;
  cursor:pointer;
}
.version-page .version-group-summary::-webkit-details-marker{
  display:none;
}
.version-page .version-group-summary:after{
  content:"+";
  width:22px;
  height:22px;
  border-radius:999px;
  display:grid;
  place-items:center;
  background:var(--soft);
  color:var(--brand);
  font-size:16px;
  font-weight:950;
  flex:0 0 auto;
}
.version-page .version-major-group[open] > .version-group-summary:after,
.version-page .version-minor-group[open] > .version-group-summary:after{
  content:"-";
}
.version-page .version-group-summary span{
  min-width:0;
}
.version-page .version-group-summary strong,
.version-page .version-group-summary em,
.version-page .version-group-summary b{
  display:block;
  min-width:0;
  overflow-wrap:anywhere;
}
.version-page .version-group-summary strong{
  color:var(--ink);
  font-size:14px;
  line-height:1.25;
}
.version-page .version-group-summary em{
  margin-top:3px;
  color:var(--sub);
  font-size:11px;
  font-style:normal;
  line-height:1.4;
}
.version-page .version-group-summary b{
  margin-left:auto;
  color:var(--brand);
  font-size:11px;
  line-height:1.3;
  white-space:nowrap;
}
.version-page .version-minor-summary{
  background:#fff;
}
.version-page .version-release-item{
  min-width:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:11px;
  scroll-margin-top:82px;
}
.version-page .version-release-item:target{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(214,0,111,.1);
}
.version-page .version-release-item.is-featured{
  border-color:var(--brand-line);
  background:linear-gradient(180deg,#fff,var(--brand-soft));
}
.version-page .version-release-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
}
.version-page .version-release-head strong,
.version-page .version-release-date{
  display:block;
}
.version-page .version-release-date{
  color:var(--sub);
  font-size:11px;
  font-weight:900;
  line-height:1.2;
}
.version-page .version-release-head strong{
  margin-top:3px;
  color:var(--brand);
  font-size:16px;
  line-height:1.15;
}
.version-page .version-release-badges{
  display:flex;
  gap:6px;
  justify-content:flex-end;
  flex-wrap:wrap;
}
.version-page .version-level-badge,
.version-page .version-feature-badge{
  display:inline-flex;
  align-items:center;
  min-height:24px;
  padding:4px 8px;
  border-radius:999px;
  font-size:11px;
  font-weight:950;
  line-height:1.15;
}
.version-page .version-level-badge{
  background:var(--accent-soft);
  color:var(--accent);
}
.version-page .version-level-badge[data-level="major"]{
  background:var(--brand-soft);
  color:var(--brand-dark);
}
.version-page .version-level-badge[data-level="minor"]{
  background:var(--safe-soft);
  color:var(--safe);
}
.version-page .version-feature-badge{
  background:var(--brand);
  color:#fff;
}
.version-page .version-release-item h3{
  margin:9px 0 0;
  color:var(--ink);
  font-size:15px;
  line-height:1.3;
}
.version-page .version-release-item p{
  margin:6px 0 0;
  color:var(--text);
  font-size:12px;
  line-height:1.6;
}
.version-page .version-release-item ul{
  margin:8px 0 0;
  padding-left:18px;
}
.version-page .version-release-item li{
  margin-top:4px;
  line-height:1.55;
}
.version-timeline{
  display:grid;
  gap:8px;
}
.version-timeline-item{
  display:grid;
  grid-template-columns:116px minmax(0,1fr);
  gap:9px;
  align-items:start;
}
.version-timeline-date{
  border:1px solid var(--brand-line);
  border-radius:var(--radius);
  background:var(--brand-soft);
  color:var(--brand-dark);
  padding:7px 8px;
  font-size:11px;
  font-weight:950;
  text-align:center;
}
.version-timeline-date span,
.version-timeline-date strong{
  display:block;
}
.version-timeline-date strong{
  margin-top:2px;
  color:var(--ink);
  font-size:12px;
  line-height:1.15;
}
.version-timeline-body{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:10px 11px;
}
.version-timeline-body h3{
  margin:0 0 5px;
  font-size:14px;
  line-height:1.28;
}
.version-timeline-body ul{
  margin:0;
  padding-left:18px;
}
.version-timeline-body li{
  margin-top:4px;
  line-height:1.55;
}
.site-footer{
  border-top:1px solid var(--line);
  background:#fff;
}
.footer-inner{
  width:min(100%,1120px);
  margin:0 auto;
  padding:22px 20px 34px;
  color:var(--sub);
  font-size:12px;
}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 14px;
  margin-bottom:10px;
}
.footer-links a{
  color:var(--text);
  font-weight:800;
  text-decoration:none;
}
.footer-links a:hover{color:var(--brand)}
.is-hidden{display:none!important}
.empty-state{
  padding:18px;
  border:1px dashed var(--line);
  border-radius:var(--radius);
  color:var(--sub);
  background:var(--soft);
  font-size:13px;
}
.compat-page{
  min-height:100vh;
  display:grid;
  place-items:center;
  padding:24px;
  background:var(--soft);
}
.compat-card{
  width:min(100%,560px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:28px;
  box-shadow:var(--shadow);
}
.compat-card h1{
  margin-top:12px;
  font-size:32px;
}
.compat-card p{
  color:var(--sub);
}
@media (max-width:900px){
  .smart-guide-layout{
    grid-template-columns:1fr;
  }
  .guide-result{
    position:relative;
    top:auto;
  }
  .role-grid,
  .tutorial-grid,
  .topic-grid,
  .contact-grid,
  .link-grid,
  .shortcut-grid,
  .rules-grid,
  .check-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .toc-layout{
    grid-template-columns:1fr;
  }
  .side-nav{
    position:relative;
    top:auto;
  }
  .business-policy-doc .policy-brief,
  .business-policy-doc .policy-detail-grid{
    grid-template-columns:1fr;
  }
  .version-page .toc-layout{
    grid-template-columns:minmax(0,1fr);
  }
  .version-page .side-nav{
    position:relative;
    top:auto;
  }
}
@media (max-width:760px){
  body{
    overflow-x:hidden;
  }
  .topbar-inner{
    padding:10px 12px;
    align-items:center;
  }
  .brand img{
    width:30px;
    height:30px;
  }
  .brand-title{
    font-size:13px;
  }
  .brand-sub{
    display:none;
  }
  .page{
    padding-left:10px;
    padding-right:10px;
    padding-bottom:34px;
  }
  .hero{
    padding:18px 0 14px;
  }
  .kicker{
    padding:4px 8px;
    font-size:10px;
  }
  h1{
    margin:10px 0 7px;
    font-size:29px;
    line-height:1.16;
  }
  .lead{
    display:-webkit-box;
    max-width:100%;
    font-size:13px;
    line-height:1.55;
    overflow:hidden;
    -webkit-box-orient:vertical;
    -webkit-line-clamp:2;
  }
  .hero-actions,
  .summary-grid{
    display:none;
  }
  .mobile-teacher{
    display:block;
    margin-top:12px;
  }
  .teacher-search-row input{
    min-height:42px;
    font-size:16px;
  }
  .teacher-search-row button{
    min-width:58px;
  }
  .teacher-quick-row{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .teacher-quick-row button{
    min-width:0;
    padding:8px 6px;
    line-height:1.25;
    overflow-wrap:anywhere;
  }
  .teacher-result{
    padding:10px;
  }
  .teacher-result h2{
    font-size:17px;
  }
  .teacher-result-grid{
    grid-template-columns:1fr;
    gap:7px;
  }
  .teacher-result-grid > div{
    padding:9px;
  }
  .teacher-actions{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .section{
    padding-top:16px;
  }
  .section-head{
    align-items:flex-start;
    margin-bottom:10px;
  }
  .section h2,
  .article h2{
    font-size:20px;
  }
  .section-desc{
    margin-top:5px;
    font-size:12px;
    line-height:1.55;
  }
  .smart-guide-layout{
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .guide-result{
    order:-1;
    top:auto;
    padding:12px;
    box-shadow:none;
  }
  .guide-result-head h3,
  .coach-panel h3{
    margin:8px 0 5px;
    font-size:18px;
  }
  .guide-advanced{
    width:100%;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    overflow:hidden;
  }
  .guide-advanced > summary{
    min-height:40px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    padding:9px 12px;
    list-style:none;
    color:var(--ink);
    font-size:13px;
    font-weight:950;
    cursor:pointer;
  }
  .guide-advanced > summary::-webkit-details-marker{
    display:none;
  }
  .guide-advanced > summary:after{
    content:"展开";
    color:var(--brand);
    font-size:12px;
  }
  .guide-advanced[open] > summary:after{
    content:"收起";
  }
  .guide-advanced .guide-panel{
    border-width:1px 0 0;
    border-radius:0;
    padding:12px;
    box-shadow:none;
  }
  .coach-step-list{
    margin-top:10px;
    gap:7px;
  }
  .coach-step{
    min-height:30px;
    padding:8px 9px 8px 36px;
    font-size:12px;
    line-height:1.48;
  }
  .coach-step:before{
    left:9px;
    top:9px;
    width:19px;
    height:19px;
    font-size:10px;
  }
  .material-checklist{
    margin-top:10px;
    padding:10px;
  }
  .material-chip{
    margin-top:6px;
  }
  .quick-entry-row{
    margin-top:10px;
  }
  .coach-panel{
    margin-top:10px;
    padding:12px;
    box-shadow:none;
  }
  .coach-head{
    align-items:flex-start;
  }
  .coach-progress{
    min-height:28px;
  }
  .coach-material-grid{
    grid-template-columns:1fr;
    gap:7px;
    margin-top:0;
  }
  .coach-material{
    padding:8px;
    font-size:12px;
  }
  .coach-note{
    margin-top:9px;
    padding:9px 10px;
    font-size:12px;
  }
  .coach-more-body .secondary-btn{
    width:100%;
    margin-top:9px;
  }
  .mobile-fold-toggle{
    width:100%;
    min-height:38px;
    display:flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    color:var(--brand);
    font-size:13px;
    font-weight:950;
    cursor:pointer;
  }
  .section.is-mobile-folded > :not(.section-head):not(.mobile-fold-toggle){
    display:none!important;
  }
  #shortcuts .shortcut-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:8px;
  }
  #shortcuts .shortcut-card{
    min-height:0;
    padding:12px;
  }
  #shortcuts .shortcut-card h3{
    margin:8px 0 5px;
    font-size:15px;
  }
  #shortcuts .shortcut-card p{
    font-size:12px;
    line-height:1.45;
  }
  .mobile-more-entries{
    margin-top:8px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    overflow:hidden;
  }
  .mobile-more-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:8px;
  }
  .topic-card,
  .card,
  .tutorial-step,
  .rule-card,
  .contact-card,
  .article-card,
  .notice,
  .check-box{
    padding:13px;
  }
  .topic-card h3,
  .card h3,
  .tutorial-step h3,
  .shortcut-card h3,
  .rule-card h3,
  .contact-card h3{
    font-size:16px;
  }
  .business-policy-doc .page{
    padding-left:10px;
    padding-right:10px;
  }
  .business-policy-doc .hero{
    padding-top:14px;
    padding-bottom:10px;
  }
  .business-policy-doc h1{
    font-size:22px;
    line-height:1.18;
  }
  .business-policy-doc .lead{
    font-size:12px;
    line-height:1.5;
  }
  .privacy-doc.business-policy-doc .privacy-meta{
    margin-top:8px;
    gap:5px;
  }
  .privacy-doc.business-policy-doc .privacy-meta span{
    min-height:22px;
    padding:2px 7px;
    font-size:10px;
  }
  .privacy-doc.business-policy-doc .notice-strip{
    gap:5px;
    margin-top:8px;
  }
  .privacy-doc.business-policy-doc .notice-strip .notice{
    padding:7px 8px;
    font-size:11px;
    line-height:1.45;
  }
  .business-policy-doc .section{
    padding-top:10px;
  }
  .business-policy-doc .toc-layout{
    gap:10px;
  }
  .business-policy-doc .side-nav{
    display:flex;
    gap:6px;
    overflow-x:auto;
    padding:8px;
    border-radius:14px;
    -webkit-overflow-scrolling:touch;
    scroll-snap-type:x proximity;
  }
  .business-policy-doc .side-nav-title{
    flex:0 0 auto;
    display:inline-flex;
    align-items:center;
    padding:0 8px;
    font-size:12px;
  }
  .business-policy-doc .side-nav a{
    flex:0 0 auto;
    margin-top:0;
    min-height:30px;
    padding:7px 10px;
    white-space:nowrap;
    scroll-snap-align:start;
  }
  .business-policy-doc .side-nav a.is-current{
    box-shadow:inset 0 -2px 0 var(--brand);
  }
  .business-policy-doc .article-card{
    padding:10px;
    border-radius:10px;
  }
  .business-policy-doc .article-card h2{
    font-size:16px;
  }
  .business-policy-doc .article-card p{
    font-size:12px;
    line-height:1.5;
  }
  .business-policy-doc .policy-toolbar{
    position:sticky;
    top:0;
    z-index:3;
    padding:8px 0;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
  }
  .policy-brief{
    gap:6px;
    margin-top:7px;
  }
  .policy-brief li{
    padding:7px 8px;
    font-size:11px;
  }
  .policy-detail{
    margin-top:7px;
  }
  .policy-detail summary{
    min-height:30px;
    padding:6px 9px;
  }
  .policy-detail-grid{
    gap:6px;
    padding:7px;
  }
  .policy-detail-grid div{
    padding:7px;
  }
  .version-page .topbar-inner{
    align-items:center;
    gap:8px;
  }
  .version-page .nav-links{
    flex:0 0 auto;
  }
  .version-page .page{
    padding-left:10px;
    padding-right:10px;
    padding-bottom:30px;
  }
  .version-page .hero{
    padding:18px 0 14px;
  }
  .version-page .kicker{
    padding:4px 8px;
    font-size:10px;
  }
  .version-page h1{
    margin:10px 0 6px;
    font-size:25px;
  }
  .version-page .lead{
    font-size:12px;
    line-height:1.55;
  }
  .version-page .section{
    padding-top:14px;
  }
  .version-page .toc-layout{
    grid-template-columns:minmax(0,1fr);
    gap:10px;
  }
  .version-page .side-nav{
    position:static;
    top:auto;
    width:100%;
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:6px;
    padding:10px;
  }
  .version-page .side-nav-title{
    grid-column:1/-1;
    font-size:12px;
  }
  .version-page .side-nav a{
    margin-top:0;
    min-height:32px;
    padding:6px 4px;
    text-align:center;
    line-height:1.2;
    white-space:nowrap;
  }
  .version-summary{
    grid-template-columns:1fr;
    gap:8px;
    margin-top:12px;
  }
  .version-summary-main{
    gap:10px;
    padding:10px;
    box-shadow:none;
  }
  .version-summary-icon{
    width:30px;
    height:30px;
  }
  .version-summary-main strong{
    font-size:22px;
  }
  .version-summary-meta,
  .version-facts{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .version-page .version-facts,
  .version-page .version-stage-grid,
  .version-page .version-feature-grid{
    grid-template-columns:1fr;
  }
  .version-summary-meta div,
  .version-facts div{
    padding:9px 8px;
  }
  .version-summary-main span,
  .version-summary-meta span,
  .version-facts span{
    font-size:10px;
    line-height:1.2;
  }
  .version-summary-meta strong,
  .version-facts strong{
    margin-top:4px;
    font-size:13px;
    line-height:1.28;
  }
  .version-page .article-card{
    margin-bottom:10px;
    padding:12px;
  }
  .version-page .article-card h2{
    margin-bottom:7px;
    font-size:19px;
  }
  .version-page .article-card p,
  .version-page .article-card li,
  .version-page .check-box{
    font-size:12px;
    line-height:1.62;
  }
  .version-highlight-item{
    padding:9px 10px 9px 28px;
    font-size:12px;
    line-height:1.55;
  }
  .version-page .version-section-head{
    display:grid;
    gap:8px;
  }
  .version-page .version-history-actions{
    justify-content:flex-start;
  }
  .version-page .version-group-summary{
    padding:10px;
  }
  .version-page .version-minor-list,
  .version-page .version-release-list{
    padding:8px;
  }
  .version-page .version-release-head{
    display:grid;
    gap:7px;
  }
  .version-page .version-release-badges{
    justify-content:flex-start;
  }
  .version-page .version-release-item{
    padding:10px;
    scroll-margin-top:18px;
  }
  .version-timeline-item{
    grid-template-columns:1fr;
    gap:5px;
  }
  .version-timeline-date{
    width:max-content;
    max-width:100%;
    padding:5px 8px;
    font-size:10px;
  }
  .version-timeline-body{
    padding:9px;
  }
  .version-timeline-body li{
    line-height:1.5;
  }
}
@media (max-width:640px){
  .topbar-inner{
    padding:10px 14px;
    align-items:flex-start;
  }
  .nav-links a:not(.keep-mobile){
    display:none;
  }
  .page{
    padding-left:14px;
    padding-right:14px;
  }
  .hero{
    padding:16px 0 14px;
  }
  h1{
    font-size:27px;
  }
  .summary-grid{
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:8px;
    margin-top:18px;
  }
  .metric{
    min-width:0;
    min-height:78px;
    padding:10px 6px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    text-align:center;
  }
  .metric .num{
    font-size:21px;
  }
  .metric .label{
    margin-top:5px;
    font-size:10px;
    line-height:1.25;
    overflow-wrap:anywhere;
  }
  .role-grid,
  .tutorial-grid,
  .topic-grid,
  .contact-grid,
  .link-grid,
  .shortcut-grid,
  .rules-grid,
  .check-grid,
  .coach-material-grid,
  .search-row{
    grid-template-columns:1fr;
  }
  .guide-panel,
  .guide-result,
  .coach-panel{
    padding:14px;
    box-shadow:none;
  }
  .guide-choice-row{
    display:grid;
    grid-template-columns:1fr;
    gap:7px;
  }
  .guide-choice{
    width:100%;
    justify-content:center;
  }
  .coach-head{
    display:grid;
    gap:8px;
  }
  .coach-progress{
    width:max-content;
    max-width:100%;
  }
  .quick-entry-row{
    display:grid;
    grid-template-columns:1fr;
  }
  .tutorial-step,
  .shortcut-card,
  .rule-card{
    min-height:auto;
  }
  .tutorial-step{
    padding-top:42px;
  }
  .topic-card{
    min-height:auto;
  }
  .section-head{
    display:block;
  }
  .primary-btn,
  .secondary-btn,
  .pill-btn{
    width:100%;
  }
}
@media (max-width:420px){
  .topbar-inner{
    padding:8px 10px;
  }
  .page{
    padding-left:8px;
    padding-right:8px;
  }
  .brand img{
    width:28px;
    height:28px;
  }
  h1{
    font-size:24px;
    line-height:1.18;
  }
  .lead{
    font-size:12px;
  }
  .teacher-search-row{
    grid-template-columns:minmax(0,1fr) 56px;
  }
  .teacher-search-row button{
    padding-left:6px;
    padding-right:6px;
  }
  .teacher-quick-row,
  .teacher-actions,
  #shortcuts .shortcut-grid,
  .mobile-more-grid{
    grid-template-columns:1fr;
  }
  .teacher-result{
    padding:9px;
  }
  .teacher-result h2{
    font-size:16px;
  }
  .section{
    padding-top:14px;
  }
  .section h2,
  .article h2{
    font-size:18px;
  }
  .guide-result,
  .coach-panel,
  .topic-card,
  .card,
  .tutorial-step,
  .shortcut-card,
  .rule-card,
  .contact-card,
  .article-card,
  .notice,
  .check-box{
    padding:11px;
  }
  .quick-entry-row .primary-btn,
  .quick-entry-row .secondary-btn{
    min-height:36px;
  }
  .version-page .topbar-inner{
    padding:8px 12px;
  }
  .version-page .brand img{
    width:28px;
    height:28px;
  }
  .version-page .brand-title{
    font-size:13px;
  }
  .version-page .hero{
    padding:16px 0 12px;
  }
  .version-page h1{
    font-size:23px;
  }
  .version-page .page{
    padding-left:8px;
    padding-right:8px;
  }
  .version-page .article-card{
    padding:10px;
  }
  .version-page .article-card h2{
    font-size:17px;
  }
  .version-page .side-nav{
    grid-template-columns:repeat(3,minmax(0,1fr));
    padding:9px;
  }
  .version-summary-main{
    align-items:flex-start;
    padding:9px;
  }
  .version-summary-icon{
    width:28px;
    height:28px;
  }
  .version-summary-main strong{
    font-size:21px;
  }
  .version-summary-meta{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .version-page .version-facts{
    grid-template-columns:1fr;
  }
  .version-summary-meta div:last-child{
    grid-column:1/-1;
  }
  .version-summary-meta div,
  .version-facts div,
  .version-timeline-body{
    padding:8px;
  }
  .version-summary-meta strong,
  .version-facts strong{
    font-size:12px;
  }
  .version-highlight-item{
    padding:8px 9px 8px 28px;
  }
  .version-page .version-stage-item,
  .version-page .version-feature-card,
  .version-page .version-release-item{
    padding:9px;
  }
  .version-page .version-group-summary{
    align-items:flex-start;
  }
  .version-page .version-group-summary b{
    white-space:normal;
    text-align:right;
  }
  .version-page .version-history-actions{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    width:100%;
  }
  .version-page .version-history-actions .secondary-btn{
    width:100%;
    min-height:32px;
    padding:6px 8px;
  }
}