/* Knowledge UI: a restrained 14 / 22 / 36 / 58 scale,
   with the useful content occupying approximately 61.8% of the desktop canvas. */
.knowledge-page{
  --kb-type-body:14px;--kb-type-card:22px;--kb-type-section:36px;
  --kb-type-display:58px;--kb-type-control:13px;--kb-type-meta:12px;
  --kb-gutter:clamp(20px,6vw,88px);--kb-copy-width:780px;
  font-family:Inter,"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:var(--kb-type-body);line-height:1.618;
}
.knowledge-page .kb-header{
  min-height:76px;height:auto;padding:12px clamp(20px,3vw,56px);gap:20px;
}
.knowledge-page .kb-brand{min-width:0;gap:10px}
.knowledge-page .kb-brand .logo-crop{width:48px;height:48px;flex:0 0 48px}
.knowledge-page .kb-brand>span:last-child{min-width:0}
.knowledge-page .kb-brand strong{font-size:20px;line-height:1.3;letter-spacing:0;font-weight:650}
.knowledge-page .kb-brand small{
  font-size:11px;line-height:1.5;letter-spacing:.025em;margin-top:4px;max-width:none;
}
.knowledge-page .kb-header-actions{gap:8px;align-items:center}
.knowledge-page .kb-header-actions>:is(a,button){
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;min-height:40px;min-width:0;padding:0 14px;
  border-radius:22px;font-family:inherit;font-size:var(--kb-type-control);
  line-height:1.25;font-weight:600;letter-spacing:0;white-space:nowrap;text-decoration:none;
}
.knowledge-page .kb-header-actions .language-toggle{min-width:48px}
.knowledge-page .kb-main{max-width:1440px}
.knowledge-page .kb-hero{padding:52px var(--kb-gutter) 40px}
.knowledge-page .kb-eyebrow,
.knowledge-page .kb-section-head p,
.knowledge-page .community-top>div>p{
  margin:0 0 14px;font-size:11px;line-height:1.5;letter-spacing:.12em;
}
.knowledge-page .kb-hero h1{
  max-width:var(--kb-copy-width);margin:0;
  font-family:inherit;font-size:clamp(36px,4.4vw,var(--kb-type-display));
  line-height:1.2;letter-spacing:-.025em;font-weight:650;
}
.knowledge-page .kb-hero h1 em{font-size:inherit;line-height:inherit;letter-spacing:inherit}
.knowledge-page .kb-hero>p:not(.kb-eyebrow){
  max-width:var(--kb-copy-width);margin:20px 0 0;font-size:16px;line-height:1.618;
}
.knowledge-page .kb-search{
  max-width:var(--kb-copy-width);margin-top:24px;padding:7px;border-radius:16px;
  box-shadow:0 10px 28px rgba(23,63,79,.06);align-items:center;
}
.knowledge-page .kb-search input{
  min-height:44px;padding:0 13px;font-family:inherit;font-size:16px;line-height:1.5;
}
.knowledge-page .kb-search button{
  min-height:44px;padding:0 20px;font-family:inherit;font-size:14px;line-height:1.3;font-weight:600;
}
.knowledge-page .kb-search:focus-within{border-color:#397b5a;box-shadow:0 0 0 3px #397b5a14}
.knowledge-page .quick-tags{gap:8px;margin-top:14px}
.knowledge-page .quick-tags button,
.knowledge-page .kb-filters button{
  min-height:36px;padding:7px 13px;font-family:inherit;font-size:var(--kb-type-control);
  line-height:1.4;font-weight:500;
}
.knowledge-page .kb-tabs{padding-inline:var(--kb-gutter);gap:28px}
.knowledge-page .kb-tabs button{
  min-height:56px;margin:0;padding:16px 4px;
  font-family:inherit;font-size:14px;line-height:1.4;font-weight:600;
}
.knowledge-page .kb-panel{padding:40px var(--kb-gutter) 52px}
.knowledge-page .kb-section-head,.knowledge-page .community-top{gap:20px}
.knowledge-page .kb-section-head h2,.knowledge-page .community-top h2{
  font-family:inherit;font-size:var(--kb-type-section);line-height:1.3;
  letter-spacing:-.025em;font-weight:650;text-wrap:balance;
}
.knowledge-page .kb-section-head>span,.knowledge-page .community-top span{
  font-size:var(--kb-type-meta);line-height:1.6;
}
.knowledge-page .kb-filters{gap:8px;margin:24px 0 20px}
.knowledge-page .brand-knowledge-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.knowledge-page .knowledge-card{
  min-height:0;min-width:0;padding:22px;grid-template-columns:48px minmax(0,1fr);
  gap:14px;border-radius:18px;
}
body.knowledge-page .brand-mark{
  width:48px;height:48px;border-radius:14px;font-size:18px;line-height:1.2;
}
body.knowledge-page .knowledge-card h3{
  font-family:inherit;font-size:var(--kb-type-card);line-height:1.3;
  letter-spacing:-.01em;font-weight:650;
}
.knowledge-page .knowledge-card-copy>div{gap:8px;flex-wrap:wrap}
body.knowledge-page .knowledge-card-copy p{
  margin:10px 0 12px;font-size:var(--kb-type-body);line-height:1.618;
}
.knowledge-page .public-badge,.knowledge-page .login-required{
  padding:4px 8px;font-size:11px;line-height:1.4;font-weight:500;
}
.knowledge-page .category-pills{gap:6px}
.knowledge-page .category-pills span{padding:5px 8px;font-size:11px;line-height:1.4}
.knowledge-page .knowledge-links{gap:8px;padding-top:14px}
.knowledge-page .knowledge-links a,
.knowledge-page .knowledge-card>button{
  font-size:var(--kb-type-control);line-height:1.5;font-weight:600;overflow-wrap:anywhere;
}
.knowledge-page .knowledge-links a{padding:9px 12px}
.knowledge-page .ai-answer{max-width:var(--kb-copy-width);padding:22px;margin-top:24px}
.knowledge-page .ai-answer h3,.knowledge-page .post-card h3{
  font-size:var(--kb-type-card);line-height:1.4;font-weight:650;letter-spacing:-.01em;
}
.knowledge-page .ai-answer p,.knowledge-page .post-card>p,.knowledge-page .kb-notice p{
  font-size:var(--kb-type-body);line-height:1.618;
}
.knowledge-page .kb-notice{margin-top:20px;padding:20px 22px}
.knowledge-page .kb-notice strong{font-size:14px;font-weight:650}
.knowledge-page .community-layout{gap:20px;margin-top:24px}
.knowledge-page .post-card{padding:22px}
.knowledge-page .post-card header strong{font-size:14px;line-height:1.5}
.knowledge-page .post-card header small,.knowledge-page .post-card header>b,
.knowledge-page .post-card>footer button,.knowledge-page .comments p{
  font-size:var(--kb-type-meta);line-height:1.6;
}
.knowledge-page .community-side ul,.knowledge-page .community-side a{font-size:13px;line-height:1.7}
.knowledge-page .community-top .kb-primary{font-size:14px}
.knowledge-page .kb-dialog h2{font-size:var(--kb-type-card);line-height:1.4}
.knowledge-page .kb-dialog label,.knowledge-page .kb-dialog input,
.knowledge-page .kb-dialog select,.knowledge-page .kb-dialog textarea,
.knowledge-page .kb-dialog .kb-primary,.knowledge-page .kb-dialog .text-button{font-size:14px;line-height:1.5}
.knowledge-page .kb-dialog>small{font-size:12px;line-height:1.6}
.knowledge-page .kb-footer{padding:32px var(--kb-gutter);font-size:13px;line-height:1.618}
.knowledge-page .kb-footer strong{font-size:18px;line-height:1.4}
.knowledge-page .kb-footer span,.knowledge-page .kb-footer small,
.knowledge-page .kb-footer .source-language-note{font-size:12px;line-height:1.6}
.knowledge-page .kb-footer .contact-footer-link{display:inline-block;margin-top:10px;font-size:13px}
.contact-page .contact-card h2,.contact-page .contact-wechat h2{font-size:22px;line-height:1.4}
.contact-page .contact-card>p,.contact-page .contact-wechat p{font-size:14px;line-height:1.618}

@media(max-width:900px){
  .knowledge-page .kb-header-actions #rulesBtn,
  .knowledge-page .kb-header-actions>.kb-header-link{display:none}
  .knowledge-page .community-layout{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:680px){
  .knowledge-page{--kb-gutter:20px;--kb-type-section:28px;--kb-type-card:22px}
  .knowledge-page .kb-header{
    display:grid;grid-template-columns:minmax(0,1fr);padding:12px 20px;gap:12px;min-height:0;
  }
  .knowledge-page .kb-brand .logo-crop{width:42px;height:42px;flex-basis:42px}
  .knowledge-page .kb-brand strong{font-size:18px}
  .knowledge-page .kb-brand small{font-size:11px}
  .knowledge-page .kb-header-actions{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
    gap:8px;width:100%;margin:0;
  }
  .knowledge-page .kb-header-actions>:is(a,button){
    width:100%;height:40px;min-height:40px;padding:0 10px;font-size:12px;
  }
  .knowledge-page .kb-hero{padding-top:32px;padding-bottom:28px}
  .knowledge-page .kb-hero h1{font-size:36px;line-height:1.2;letter-spacing:-.025em}
  .knowledge-page .kb-hero>p:not(.kb-eyebrow){font-size:14px;margin-top:16px}
  .knowledge-page .kb-search{display:grid;grid-template-columns:minmax(0,1fr);gap:5px;margin-top:20px}
  .knowledge-page .kb-search input{height:44px;min-height:44px;padding-inline:10px}
  .knowledge-page .kb-search button{width:100%;min-height:42px;font-size:14px}
  .knowledge-page .quick-tags{gap:7px;margin-top:12px}
  .knowledge-page .quick-tags button,.knowledge-page .kb-filters button{font-size:12px;padding-inline:11px}
  .knowledge-page .kb-tabs{gap:24px}
  .knowledge-page .kb-tabs button{min-height:52px;font-size:14px;padding-block:14px}
  .knowledge-page .kb-panel{padding-top:32px;padding-bottom:40px}
  .knowledge-page .brand-knowledge-grid{grid-template-columns:minmax(0,1fr);gap:14px}
  .knowledge-page .knowledge-card{padding:18px;grid-template-columns:40px minmax(0,1fr);gap:12px}
  body.knowledge-page .brand-mark{width:40px;height:40px;border-radius:12px;font-size:16px}
  .knowledge-page .post-card{padding:18px}
}