:root {
  --bg: #f7f8fa; --card: #fff; --text: #1c2230; --muted: #5d6677; --line: #e3e6ec;
  --accent: #1f6feb; --accent-soft: #e8f0fe; --code-bg: #f1f3f6; --pre-bg: #161b22; --pre-text: #e6edf3;
  --ok: #1a7f37; --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.top { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px;
  height: 56px; padding: 0 20px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--text); }
.brand span { color: var(--accent); }
.spec { margin-left: auto; font-size: 14px; }
.menu { display: none; border: 1px solid var(--line); background: var(--card); border-radius: 8px;
  padding: 6px 10px; font: inherit; font-size: 14px; color: var(--text); cursor: pointer; }

.layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); max-width: 1280px; margin: 0 auto; }
.toc { position: sticky; top: 56px; align-self: start; height: calc(100vh - 56px); overflow-y: auto;
  padding: 16px 12px 32px 20px; border-right: 1px solid var(--line); }
.toc ul { list-style: none; margin: 8px 0 0; padding: 0; }
.toc li a { display: block; padding: 3px 8px; border-radius: 6px; color: var(--text); font-size: 14px; }
.toc li.l3 a { padding-left: 20px; color: var(--muted); font-family: var(--mono); font-size: 13px; }
.toc li a:hover, .toc li a.active { background: var(--accent-soft); color: var(--accent); text-decoration: none; }
.search { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; font-size: 14px; background: var(--card); }
.search:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.empty { color: var(--muted); font-size: 14px; padding: 0 8px; }

.content { min-width: 0; padding: 24px 40px 80px; }
.content h1 { font-size: 32px; margin: 8px 0 16px; }
.content h2 { font-size: 24px; margin: 48px 0 12px; padding-top: 8px; border-top: 1px solid var(--line); }
.content h3 { font-size: 18px; margin: 32px 0 8px; font-family: var(--mono); }
.content h3 a.anchor, .content h2 a.anchor { margin-left: 6px; opacity: 0; font-family: var(--font); }
.content h2:hover a.anchor, .content h3:hover a.anchor { opacity: .6; }
.content p, .content li { max-width: 820px; }
.content code { font-family: var(--mono); font-size: .88em; background: var(--code-bg); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.content pre { position: relative; background: var(--pre-bg); color: var(--pre-text); padding: 14px 16px; border-radius: 10px;
  overflow-x: auto; font-size: 13.5px; line-height: 1.5; max-width: 100%; }
.content pre code { background: none; padding: 0; color: inherit; font-size: inherit; overflow-wrap: normal; }
.copy { position: absolute; top: 8px; right: 8px; border: 1px solid #3a4250; background: #222a35; color: #c9d1d9;
  border-radius: 6px; padding: 2px 8px; font: 12px var(--font); cursor: pointer; opacity: .85; }
.copy:hover { opacity: 1; }
.copy.done { color: #7ee2a8; border-color: #2c6e49; }
.content table { border-collapse: collapse; margin: 12px 0 20px; font-size: 14.5px; display: block; overflow-x: auto; max-width: 100%; }
.content th, .content td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; vertical-align: top; }
.content th { background: var(--code-bg); font-weight: 600; }
.content td code { white-space: nowrap; overflow-wrap: normal; }

@media (max-width: 860px) {
  .menu { display: inline-block; white-space: nowrap; }
  .brand { white-space: nowrap; font-size: 15px; }
  .top { gap: 12px; padding: 0 12px; }
  .layout { display: block; }
  /* На телефоне оглавление — обычный блок над текстом, открывается кнопкой. */
  .toc { display: none; position: static; height: auto; overflow: visible; border-right: 0; border-bottom: 1px solid var(--line); padding: 12px 16px 16px; background: var(--card); }
  .toc.open { display: block; }
  .content { padding: 16px 16px 64px; }
  .content h1 { font-size: 26px; }
  .content h2 { font-size: 21px; }
  .spec { display: none; }
}