:root {
  --bg: #0f1419;
  --bg-elev: #151b24;
  --fg: #e8edf4;
  --muted: #9aa6b8;
  --line: #273142;
  --code-bg: #0b0f14;
  --code-border: #2a3548;
  --accent: #8eb4ff;
  --accent-soft: #1a2740;
  --side-bg: #121820;
  --side-w: 268px;
  --method: #a8b4ff;
  --warn-bg: #2a2210;
  --warn-line: #8a6d1f;
  --th-bg: #1a2230;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15.5px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.layout {
  display: grid;
  grid-template-columns: var(--side-w) minmax(0, 1fr);
  min-height: 100vh;
  align-items: stretch;
}

/* ——— Sidebar ——— */
.side {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--side-bg);
  border-right: 1px solid var(--line);
  padding: 18px 0 32px;
  display: flex;
  flex-direction: column;
}
.side-brand {
  padding: 0 18px;
  font-size: .95rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: .01em;
}
.side-sub {
  padding: 2px 18px 14px;
  margin: 0;
  font-size: .78rem;
  color: var(--muted);
}
.side nav {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0 10px;
}
.nav-group {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.nav-group > span {
  display: block;
  padding: 4px 8px 6px;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.nav-group a {
  display: block;
  padding: 6px 10px;
  border-radius: 6px;
  color: #c5cedc;
  text-decoration: none;
  font-size: .88rem;
  line-height: 1.35;
}
.nav-group a:hover {
  background: var(--accent-soft);
  color: var(--fg);
}
.nav-group a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.nav-group a .m {
  color: var(--method);
  font-weight: 600;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: .82em;
  margin-right: 4px;
}
.nav-group a code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: .9em;
}
.side-meta {
  margin-top: auto;
  padding: 16px 18px 0;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.side-meta a { color: var(--accent); text-decoration: none; }
.side-meta a:hover { text-decoration: underline; }

/* ——— Content ——— */
main {
  max-width: 920px;
  width: 100%;
  margin: 0;
  padding: 36px 40px 96px;
  background: var(--bg);
}
h1 {
  font-size: 1.85rem;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -.02em;
}
h2 {
  font-size: 1.28rem;
  margin: 44px 0 12px;
  padding-top: 8px;
  scroll-margin-top: 20px;
  border-top: none;
}
h2::before {
  content: "";
  display: block;
  height: 1px;
  background: var(--line);
  margin: 0 0 28px;
}
h2:first-of-type { margin-top: 32px; }
h2:first-of-type::before { display: none; }
h3 {
  font-size: 1.05rem;
  margin: 26px 0 8px;
  scroll-margin-top: 20px;
}
a { color: var(--accent); }
p, li { overflow-wrap: anywhere; }
.lead {
  color: var(--muted);
  margin: 0 0 8px;
  font-size: 1.02rem;
  max-width: 62ch;
}
code {
  background: var(--accent-soft);
  color: #d7e4ff;
  padding: 1px 6px;
  border-radius: 4px;
  font: .88em ui-monospace, Menlo, Consolas, monospace;
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  font: .84rem/1.55 ui-monospace, Menlo, Consolas, monospace;
  color: #d7dee9;
}
pre code {
  background: none;
  color: inherit;
  padding: 0;
  font: inherit;
}
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: .92rem;
}
th, td {
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
}
tr:last-child td { border-bottom: none; }
th {
  background: var(--th-bg);
  color: var(--muted);
  font-weight: 600;
  font-size: .82rem;
}
.note {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 14px 0;
}

/* ——— Mobile: sidebar остаётся колонкой сверху, не «чипы» ——— */
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .side {
    position: relative;
    height: auto;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
  }
  .side nav { gap: 10px; }
  .side-meta {
    margin-top: 12px;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px 14px;
  }
  main { padding: 22px 16px 64px; }
}

@media print {
  :root {
    --bg: #fff;
    --fg: #111;
    --muted: #444;
    --line: #ccc;
    --code-bg: #f4f4f4;
    --side-bg: #fff;
  }
  .side { display: none; }
  .layout { display: block; }
  main { max-width: none; padding: 0; }
  pre { white-space: pre-wrap; word-break: break-word; page-break-inside: avoid; }
  h2, h3 { page-break-after: avoid; }
}