.tab-shell{
  display:grid;
  grid-template-columns:minmax(210px,300px) minmax(0,1fr);
  overflow:hidden;
  color:var(--color-text);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow-panel);
}
.tab-list{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:24px 14px;
  background:var(--color-panel);
  border-right:1px solid var(--color-border);
}
.tab-list[aria-orientation="horizontal"]{
  flex-direction:row;
  overflow-x:auto;
  border-right:0;
  border-bottom:1px solid var(--color-border);
}
.tab-button{
  position:relative;
  display:flex;
  width:100%;
  min-height:48px;
  align-items:center;
  padding:10px 16px;
  color:var(--color-muted);
  background:transparent;
  border:0;
  border-radius:var(--radius-sm);
  font-family:var(--font-mono);
  text-align:left;
  cursor:pointer;
}
.tab-button:hover{
  color:var(--color-text);
  background:var(--color-panel-raised);
}
.tab-button[aria-selected="true"],
.tab-button.is-active{
  color:var(--color-link);
  background:var(--color-panel-raised);
}
.tab-button[aria-selected="true"]::before,
.tab-button.is-active::before{
  content:"";
  position:absolute;
  top:10px;
  bottom:10px;
  left:0;
  width:2px;
  border-radius:var(--radius-pill);
  background:var(--color-link);
}
.tab-panel{
  min-width:0;
  padding:38px;
  color:var(--color-muted);
  background:var(--color-panel-raised);
}
.tab-panel[hidden]{
  display:none;
}
.tab-panel h3{
  margin-bottom:16px;
}
.module-facts{
  display:flex;
  gap:10px 22px;
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid var(--color-border);
  flex-wrap:wrap;
  color:var(--color-accent);
  font-family:var(--font-mono);
  font-size:12px;
}
.category-toc{
  position:sticky;
  top:12px;
  z-index:8;
  display:flex;
  gap:8px;
  max-width:100%;
  overflow-x:auto;
  padding:10px;
  color:var(--color-text);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-panel);
  scrollbar-width:thin;
}
.category-toc a{
  display:inline-flex;
  min-height:38px;
  flex:0 0 auto;
  align-items:center;
  padding:7px 14px;
  color:var(--color-muted);
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:12px;
}
.category-toc a:hover,
.category-toc a.is-current{
  color:var(--color-text);
  background:var(--color-panel-raised);
}
.faq-list{
  display:grid;
  gap:12px;
}
.faq-item{
  color:var(--color-text);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
}
.faq-item summary{
  display:flex;
  min-height:60px;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:16px 20px;
  color:var(--color-text);
  font-weight:600;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary::after{
  content:"+";
  width:28px;
  height:28px;
  flex-shrink:0;
  display:grid;
  place-items:center;
  color:var(--color-accent);
  background:var(--color-panel-raised);
  border:1px solid var(--color-border);
  border-radius:50%;
  font-family:var(--font-mono);
}
.faq-item[open] summary::after{
  content:"−";
}
.faq-answer{
  padding:0 20px 20px;
  color:var(--color-muted);
}
.glossary-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.term-card{
  position:relative;
  padding:26px;
  color:var(--color-muted);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
}
.term-card::before{
  content:"";
  position:absolute;
  top:26px;
  left:0;
  width:2px;
  height:28px;
  background:linear-gradient(var(--color-accent),var(--color-accent-end));
}
.term-card dt{
  margin-bottom:10px;
  color:var(--color-text);
  font-family:var(--font-mono);
  font-size:17px;
  font-weight:600;
}
.term-card dd{
  color:var(--color-muted);
}
.download-card{
  display:flex;
  flex-direction:column;
  min-width:0;
  padding:28px;
  color:var(--color-text);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-panel);
}
.download-card-head{
  display:flex;
  align-items:flex-start;
  gap:16px;
}
.download-card-head img{
  width:56px;
  height:56px;
  flex-shrink:0;
}
.download-card h3{
  margin-bottom:6px;
}
.download-card p{
  color:var(--color-muted);
}
.download-actions{
  display:flex;
  gap:10px;
  margin-top:24px;
  flex-wrap:wrap;
}
.release-rev{
  color:var(--color-accent);
  font-family:var(--font-mono);
  font-size:12px;
}
.recommend-badge,
.primary-badge,
.retired-badge{
  display:inline-flex;
  max-width:100%;
  min-height:26px;
  align-items:center;
  padding:4px 9px;
  overflow:hidden;
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:11px;
}
.recommend-badge,
.primary-badge{
  color:var(--color-accent);
  background:var(--color-panel-raised);
  border-color:var(--color-accent-deep);
}
.retired-badge{
  color:var(--color-warning);
  background:var(--color-panel-raised);
}
.article-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.article-card{
  display:flex;
  min-width:0;
  flex-direction:column;
  padding:26px;
  color:var(--color-text);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
  transition:transform var(--transition-fast),border-color var(--transition-fast);
}
.article-card:hover{
  border-color:var(--color-accent-deep);
  transform:translateY(-3px);
}
.article-card-meta{
  display:flex;
  justify-content:space-between;
  gap:12px;
  margin-bottom:16px;
  color:var(--color-muted);
  font-family:var(--font-mono);
  font-size:11px;
}
.article-card h3{
  font-size:20px;
  line-height:1.4;
}
.article-card p{
  margin-top:12px;
  color:var(--color-muted);
}
.article-card-more{
  margin-top:auto;
  padding-top:22px;
  color:var(--color-link);
  font-family:var(--font-mono);
  font-size:12px;
}
.callout{
  position:relative;
  padding:20px 22px 20px 52px;
  color:var(--color-text);
  background:var(--color-panel-raised);
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
}
.callout::before{
  content:"!";
  position:absolute;
  top:20px;
  left:18px;
  width:22px;
  height:22px;
  display:grid;
  place-items:center;
  color:var(--color-bg);
  background:var(--color-accent);
  border-radius:50%;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
}
.callout-warning::before{
  color:var(--color-bg);
  background:var(--color-warning);
}
.callout-error::before{
  color:var(--color-bg);
  background:var(--color-error);
}
.end-download-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  margin-top:48px;
  padding:28px;
  color:var(--color-text);
  background:var(--color-panel-raised);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
}
.end-download-card p{
  color:var(--color-muted);
}
.dl-fab{
  position:fixed;
  right:max(18px,var(--gutter));
  bottom:18px;
  z-index:30;
  display:flex;
  max-width:min(340px,calc(100vw - 32px));
  min-height:62px;
  align-items:center;
  gap:12px;
  padding:10px 18px 10px 11px;
  color:#FFFFFF;
  background:#073B4C;
  border:1px solid #29F58C;
  border-radius:var(--radius-pill);
  box-shadow:0 0 28px var(--color-accent-glow),var(--shadow-panel);
}
.dl-fab-icon{
  width:40px;
  height:40px;
  flex-shrink:0;
  display:grid;
  place-items:center;
  color:var(--color-text);
  background:var(--color-bg);
  border-radius:50%;
}
.dl-fab-icon svg{
  width:19px;
  height:19px;
}
.dl-fab-copy{
  min-width:0;
  display:grid;
  color:#FFFFFF;
  line-height:1.25;
}
.dl-fab-copy strong{
  color:inherit;
  font-size:14px;
}
.dl-fab-copy small{
  color:inherit;
  font-size:11px;
}
.preview-swatch-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
}
.preview-swatch{
  overflow:hidden;
  color:var(--color-text);
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
}
.preview-swatch-color{
  height:82px;
}
.swatch-bg{background:var(--color-bg)}
.swatch-panel{background:var(--color-panel)}
.swatch-panel-raised{background:var(--color-panel-raised)}
.swatch-border{background:var(--color-border)}
.swatch-accent{background:var(--color-accent)}
.swatch-accent-end{background:var(--color-accent-end)}
.swatch-link{background:var(--color-link)}
.swatch-text{background:var(--color-text)}
.preview-swatch code{
  display:block;
  padding:12px;
  color:var(--color-text);
  background:var(--color-panel);
  border:0;
}
.preview-type-stack{
  display:grid;
  gap:24px;
  padding:32px;
}
.preview-component-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
@media (max-width:900px){
  .tab-shell{
    grid-template-columns:minmax(0,1fr);
  }
  .tab-list{
    flex-direction:row;
    overflow-x:auto;
    border-right:0;
    border-bottom:1px solid var(--color-border);
  }
  .tab-button{
    width:auto;
    min-width:max-content;
  }
  .tab-button[aria-selected="true"]::before,
  .tab-button.is-active::before{
    top:auto;
    right:12px;
    bottom:0;
    left:12px;
    width:auto;
    height:2px;
  }
  .article-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .preview-swatch-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}
@media (max-width:640px){
  .glossary-grid,
  .article-grid,
  .preview-component-grid{
    grid-template-columns:minmax(0,1fr);
  }
  .tab-panel{
    padding:24px 20px;
  }
  .category-toc{
    border-radius:var(--radius-md);
  }
  .download-actions .button{
    width:100%;
  }
  .end-download-card{
    align-items:flex-start;
    flex-direction:column;
  }
  .preview-swatch-grid{
    grid-template-columns:minmax(0,1fr);
  }
  .dl-fab{
    right:16px;
    bottom:14px;
    left:16px;
    max-width:none;
  }
}