.docs-shell {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: 3rem;
  align-items: start;

  max-width: 1500px;
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 6rem);
  padding-top: 6.5rem;
  padding-bottom: 5rem;
}

.docs-side { position: sticky; top: 5.6rem; max-height: calc(100svh - 6.5rem); overflow-y: auto; padding-right: 0.5rem; }
.docs-search {
  position: relative; margin-bottom: 1.5rem;
}
.docs-search input {
  width: 100%; height: 2.5rem; padding: 0 0.9rem 0 2.3rem;
  background: var(--bg-elev); border: 1px solid var(--border-soft); border-radius: 10px;
  color: var(--text); font-family: var(--font-body); font-size: 0.88rem;
  transition: border-color 0.2s;
}
.docs-search input:focus { outline: none; border-color: var(--primary); }
.docs-search svg { position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%); width: 1rem; height: 1rem; stroke: var(--text-faint); }

.docs-nav h6 { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-faint); margin: 1.4rem 0 0.6rem; font-weight: 400; }
.docs-nav h6:first-child { margin-top: 0; }
.docs-nav a {
  display: block; font-size: 0.9rem; color: var(--text-muted);
  padding: 0.36rem 0.7rem; border-radius: 8px; border-left: 2px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.docs-nav a:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.docs-nav a.active { color: var(--primary-bright); background: var(--primary-faint); border-left-color: var(--primary); }
.docs-nav a.hidden-search { display: none; }

.docs-main { min-width: 0; }
.docs-main .crumbs { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-faint); letter-spacing: 0.06em; margin-bottom: 1.5rem; }
.docs-main .crumbs span { color: var(--primary-bright); }

.docs-main h1 { font-size: clamp(2.1rem, 4vw, 2.9rem); margin-bottom: 1rem; }
.docs-main .intro { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 2.5rem; line-height: 1.6; }

.doc-section { padding-top: 2.5rem; margin-top: 2.5rem; border-top: 1px solid var(--hairline); scroll-margin-top: 6.5rem; }
.doc-section:first-of-type { border-top: none; margin-top: 0; padding-top: 0; }
.doc-section > h2 { font-size: 1.7rem; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.6rem; }
.doc-section > h2 .anchor { font-family: var(--font-mono); color: var(--text-faint); opacity: 0; font-size: 1.1rem; transition: opacity 0.2s; }
.doc-section > h2:hover .anchor { opacity: 1; }
.doc-section h3 { font-size: 1.15rem; margin: 2rem 0 0.8rem; }
.doc-section p { color: var(--text-muted); margin-bottom: 1rem; }
.doc-section ul.bullets { margin: 0 0 1.2rem; padding-left: 0; }
.doc-section ul.bullets li { position: relative; padding-left: 1.4rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.doc-section ul.bullets li::before { content: ""; position: absolute; left: 0.2rem; top: 0.7em; width: 6px; height: 6px; border-radius: 99px; background: var(--primary); }
.doc-section a.link { color: var(--primary-bright); border-bottom: 1px solid var(--border); }
.doc-section a.link:hover { border-bottom-color: var(--primary-bright); }
.doc-section strong { color: var(--text); font-weight: 600; }

code.ic { font-family: var(--font-mono); font-size: 0.85em; background: rgba(128,0,255,0.12); color: var(--primary-bright); padding: 0.12em 0.4em; border-radius: 5px; border: 1px solid var(--border); }

.codeblock { position: relative; margin: 1.2rem 0 1.5rem; border: 1px solid var(--border-soft); border-radius: var(--radius-sm); background: var(--bg-elev); overflow: hidden; }
.codeblock .cb-bar { display: flex; align-items: center; justify-content: space-between; padding: 0.55rem 0.9rem; border-bottom: 1px solid var(--hairline); }
.codeblock .cb-lang { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint); letter-spacing: 0.08em; text-transform: uppercase; }
.codeblock .cb-copy { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); display: inline-flex; gap: 0.4rem; align-items: center; padding: 0.2rem 0.5rem; border-radius: 6px; transition: color 0.2s, background 0.2s; }
.codeblock .cb-copy:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.codeblock pre { padding: 1rem 1.1rem; overflow-x: auto; }
.codeblock code { font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.7; color: #d8cdeb; }
.codeblock .cm { color: var(--text-faint); }
.codeblock .tk { color: var(--primary-bright); }
.codeblock .st { color: #b7e3a4; }

.callout { display: flex; gap: 0.9rem; padding: 1rem 1.1rem; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--primary-faint); margin: 1.2rem 0 1.5rem; }
.callout svg { width: 1.2rem; height: 1.2rem; flex: 0 0 auto; stroke: var(--primary-bright); margin-top: 0.15rem; }
.callout p { margin: 0; color: var(--text); font-size: 0.92rem; }
.callout.warn { border-color: rgba(255,170,60,0.35); background: rgba(255,170,60,0.08); }
.callout.warn svg { stroke: #ffb84d; }

.doc-table { width: 100%; border-collapse: collapse; margin: 1.2rem 0 1.5rem; font-size: 0.9rem; }
.doc-table th, .doc-table td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--hairline); }
.doc-table th { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); font-weight: 400; }
.doc-table td { color: var(--text-muted); vertical-align: top; }
.doc-table td code { font-family: var(--font-mono); color: var(--primary-bright); font-size: 0.85em; }
.doc-table tr:hover td { background: rgba(255,255,255,0.015); }

.doc-foot { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid var(--hairline); }
.doc-foot a { flex: 1; border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 1rem 1.2rem; transition: border-color 0.3s, transform 0.3s; }
.doc-foot a:hover { border-color: var(--primary); transform: translateY(-2px); }
.doc-foot .dir { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint); }
.doc-foot .ti { display: block; margin-top: 0.3rem; color: var(--text); font-weight: 500; }
.doc-foot a.next { text-align: right; }

.docs-mtoggle { display: none; }
@media (max-width: 920px) {
  .docs-shell { grid-template-columns: 1fr; gap: 0; }
  .docs-side {
    position: fixed; inset: 4.6rem 0 0 auto; width: min(20rem, 84vw); z-index: 90;
    max-height: none; height: calc(100svh - 4.6rem);
    background: rgba(6,3,12,0.97); backdrop-filter: blur(16px);
    border-left: 1px solid var(--border); padding: 1.5rem;
    transform: translateX(100%); transition: transform 0.35s var(--ease);
  }
  .docs-side.open { transform: none; }
  .docs-mtoggle {
    display: inline-flex; align-items: center; gap: 0.5rem;
    position: sticky; top: 5.4rem; z-index: 80; margin-bottom: 1.5rem;
    font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted);
    border: 1px solid var(--border-soft); border-radius: 8px; padding: 0.5rem 0.9rem; background: var(--bg-elev);
  }
  .docs-mtoggle svg { width: 1rem; height: 1rem; stroke: currentColor; }
}