.docs {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 64px;
  padding-top: 48px;
}

/* ------------------------------------------------------------------ toc */
.toc {
  position: sticky;
  top: 76px;
  align-self: start;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border);
}
.toc .t3 { padding: 18px 0 6px 16px; }
.toc .t3:first-child { padding-top: 0; }
.toc a {
  font-size: 12px;
  color: var(--fg-muted);
  padding: 4px 0 4px 15px;
  border-left: 2px solid transparent;
  margin-left: -1px;
}
.toc a:hover { color: var(--fg); }
.toc a[aria-current='true'] { color: var(--fg); border-left-color: var(--accent); }

/* ------------------------------------------------------------------ doc */
.doc { max-width: 760px; min-width: 0; }
.doc-head { padding-bottom: 32px; border-bottom: 1px solid var(--border-strong); }
.doc-head h1 { font-size: clamp(32px, 4vw, 44px); line-height: 1.05; font-weight: 500; letter-spacing: -0.03em; margin-top: 12px; }
.doc-head .lede { margin-top: 16px; font-size: 16px; color: var(--fg-muted); }

.doc section { padding-top: 56px; }
.doc h2 { font-size: 26px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 16px; }
.doc h3 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 32px 0 12px;
  scroll-margin-top: 72px;
}
.doc .step-title { display: flex; align-items: center; gap: 10px; }
.doc .step-title .n {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.doc .prose { font-size: 14.5px; color: #b9c5d6; }
.doc p.prose + p.prose, .doc p.prose + .list, .doc .list + p.prose { margin-top: 14px; }
.doc .prose b { color: var(--fg); font-weight: 600; }
.doc .prose em { font-style: normal; color: var(--fg); }
.doc .term, .doc .panel, .doc .note, .doc .flow { margin: 18px 0; }

.list { list-style: none; padding: 0; margin-top: 12px; }
.list li { position: relative; padding: 5px 0 5px 22px; }
.list li::before { content: '—'; position: absolute; left: 0; color: var(--fg-subtle); font-family: var(--font-mono); }
.list.numbered { counter-reset: n; }
.list.numbered li { counter-increment: n; padding-left: 28px; }
.list.numbered li::before { content: counter(n, decimal-leading-zero); color: var(--accent); font-size: 11px; top: 8px; }

.kvs { padding: 4px 16px; }
.kvs .kv { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 12px; }
.kvs .kv:last-child { border-bottom: none; }
.kvs .kv span:first-child { color: var(--fg-subtle); }
.kvs .kv span:last-child { color: var(--fg); font-family: var(--font-sans); font-size: 13.5px; line-height: 1.55; }
.kvs .kv b { font-weight: 600; }

.note {
  border: 1px solid var(--border-strong);
  border-left: 2px solid var(--accent);
  background: rgba(143, 184, 255, 0.045);
  padding: 14px 16px;
}
.note .prose { margin-top: 6px; font-size: 13.5px; }

.flow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.flow .arr { color: var(--fg-subtle); }

.faq dt { font-size: 13px; color: var(--fg); padding-top: 18px; margin-top: 18px; border-top: 1px solid var(--border); }
.faq dt:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.faq dd { margin-top: 6px; }

.limits-list li { padding: 10px 0 10px 22px; border-bottom: 1px solid var(--border); }
.limits-list li:last-child { border-bottom: none; }

@media (max-width: 900px) {
  .docs { grid-template-columns: 1fr; gap: 0; padding-top: 32px; }
  .toc { display: none; }
  .kvs .kv { grid-template-columns: 1fr; gap: 4px; }
}