:root {
  --serif: "Literata", Georgia, "Times New Roman", serif;
  --sans: "Onest", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --paper: #F3F0E9; --paper-2: #EAE6DC; --paper-3: #FBFAF7;
  --ink: #111111; --ink-2: #3B3A36; --muted: #75716A;
  --rule: rgba(17,17,17,.15); --rule-2: rgba(17,17,17,.08);
  --mark: #FFD43B; --mark-ink: #111111;
  --good: #1D7A47; --good-soft: rgba(29,122,71,.10); --bad: #C23A40; --bad-soft: rgba(194,58,64,.08);
  --code-bg: #141412; --code-bg-2: #1B1B18; --code-line: #2A2A26; --code-ink: #ECE9E1; --code-muted: #8A867C;
  --tok-str: #A7D98B; --tok-num: #F4A86B; --tok-fn: #8FB8F2; --tok-kw: #F28B94; --tok-com: #7E7A71; --tok-op: #CFCBC1; --tok-bad: #FF6B6B; --tok-cyr: #F4A86B;
  --stage-ink: #EEEBE3; --stage-muted: #8F8B82;
  --bit-body: #FBFAF7; --bit-line: #111111; --bit-eye: #FFD43B;
  --r: 3px; --r-2: 6px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --paper: #121211; --paper-2: #1A1A18; --paper-3: #1F1F1C;
  --ink: #EEEBE3; --ink-2: #C9C5BB; --muted: #8F8B81;
  --rule: rgba(238,235,227,.16); --rule-2: rgba(238,235,227,.08);
  --good: #55C98B; --good-soft: rgba(85,201,139,.12); --bad: #FF7B80; --bad-soft: rgba(255,123,128,.10);
  --code-bg: #0C0C0B; --code-bg-2: #151513; --code-line: #25251F;
  --bit-body: #1F1F1C; --bit-line: #EEEBE3;
  color-scheme: dark;
}


/* ================================================================ справочник и блог (/python/, /blog/) — prototype/content.py
   Отдельные лёгкие страницы для поисковиков: те же цвета и шрифты, что у сайта, без скриптов курса. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 84px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: inherit; text-underline-offset: 4px; text-decoration-thickness: 1px; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
::selection { background: var(--mark); color: var(--mark-ink); }
code, pre { font-family: var(--mono); }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }
.skip-link { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--ink); color: var(--paper); padding: 8px 12px; }
.skip-link:focus { left: 8px; }
.wrap { width: 100%; max-width: 860px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.kicker { display: block; margin: 0; font: 500 12px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.h1 { margin: 10px 0 18px; font: 500 clamp(34px, 5.4vw, 54px)/1.06 var(--serif); letter-spacing: -.022em; text-wrap: balance; overflow-wrap: anywhere; }
.h1 code { font: 500 .78em/1 var(--mono); letter-spacing: -.02em; padding: 0 .18em; background: var(--mark); color: var(--mark-ink); border-radius: var(--r); white-space: nowrap; }
.lead { margin: 0 0 26px; font-size: 19.5px; line-height: 1.6; color: var(--ink-2); text-wrap: pretty; }
h2 { margin: 44px 0 14px; font: 500 clamp(25px, 3.2vw, 31px)/1.15 var(--serif); letter-spacing: -.015em; text-wrap: balance; }
h3 { margin: 30px 0 10px; font: 600 19px/1.3 var(--sans); }
h2 .kicker { margin-bottom: 6px; }
.h-small { font-size: 22px; margin-top: 40px; }
p { margin: 0 0 16px; }
:not(pre) > code { padding: 1px 5px; border-radius: var(--r); background: var(--paper-2); font-size: .88em; overflow-wrap: anywhere; }

/* кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 46px; padding: 0 20px; border-radius: var(--r); border: 1px solid transparent; font: 600 15.5px/1 var(--sans); text-decoration: none; white-space: nowrap; transition: box-shadow .15s, background-color .15s; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { box-shadow: inset 0 -4px 0 var(--mark); }
.btn-sm { height: 36px; padding: 0 14px; font-size: 14px; }
.btn-link { font-weight: 500; }
.icon-btn { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: var(--r); border: 0; background: transparent; color: var(--ink-2); cursor: pointer; }
.icon-btn:hover { background: var(--paper-2); color: var(--ink); }
.icon-btn svg { width: 19px; height: 19px; }
[data-theme="light"] .i-moon, [data-theme="dark"] .i-sun { display: none; }
.i-sun, .i-moon { display: grid; }

/* шапка */
.top { position: sticky; top: 0; z-index: 40; background: var(--paper); border-bottom: 1px solid var(--rule); }
.top .wrap { max-width: 1120px; }
.top-row { display: flex; align-items: center; gap: 22px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); flex: none; }
.logo-mark { display: grid; place-items: center; width: 24px; height: 24px; background: var(--mark); border-radius: 2px; }
.logo-mark i { width: 3px; height: 13px; background: var(--mark-ink); animation: caret 1.1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.logo-word { font: 700 20px/1 var(--sans); letter-spacing: -.035em; }
.logo-word b { font-family: var(--mono); font-size: 15px; margin-left: 1px; vertical-align: 1px; }
.top-nav { display: flex; gap: 2px; min-width: 0; }
.top-nav a { display: inline-flex; align-items: center; height: 34px; padding: 0 10px; border-radius: var(--r); color: var(--ink-2); font: 500 13px var(--mono); letter-spacing: .04em; text-transform: uppercase; text-decoration: none; }
.top-nav a:hover { background: var(--paper-2); color: var(--ink); }
.top-nav a[aria-current] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--mark); }
.top-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
@media (max-width: 720px) {
  .top-row { gap: 10px; height: 58px; }
  .hide-xs { display: none !important; }
  .logo-word { display: none; }
  .top-nav a { padding: 0 7px; font-size: 12px; letter-spacing: .02em; }
  .top-actions .btn-sm { padding: 0 11px; font-size: 13px; }
}
@media (max-width: 380px) { .top-actions .icon-btn { display: none; } }

main.wrap { padding: 26px 24px 64px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 26px; font: 400 13px/1.5 var(--mono); color: var(--muted); }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--ink); }
.crumbs span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }

/* код */
.code { margin: 18px 0 22px; border-radius: var(--r-2); overflow: hidden; background: var(--code-bg); color: var(--code-ink); }
.code pre { margin: 0; padding: 16px 18px; overflow-x: auto; font: 400 15px/1.6 var(--mono); tab-size: 4; }
.code-out { border-top: 1px solid var(--code-line); background: var(--code-bg-2); }
.code-out pre { padding-top: 6px; color: var(--code-ink); }
.code-label { display: block; padding: 12px 18px 0; font: 500 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--code-muted); }
.code-note { margin: 0; padding: 10px 18px; border-top: 1px solid var(--code-line); font: 400 13.5px/1.5 var(--mono); color: var(--code-muted); }
.code-note b { color: var(--code-ink); font-weight: 500; }
.t-kw { color: var(--tok-kw); } .t-str { color: var(--tok-str); } .t-num { color: var(--tok-num); } .t-fn { color: var(--tok-fn); }
.t-com { color: var(--tok-com); font-style: italic; } .t-op { color: var(--tok-op); }

/* понятие */
.pic { margin: 0 0 8px; padding: 18px 20px; border-left: 4px solid var(--mark); background: var(--paper-3); }
.pic p { margin: 6px 0 0; font: 400 18px/1.55 var(--serif); }
.say { padding: 14px 0 0; border-top: 1px solid var(--rule-2); color: var(--ink-2); font-size: 16px; }
.say .kicker { display: inline; margin-right: 6px; }
.mis { list-style: none; margin: 0; padding: 0; }
.mis li { padding: 14px 0; border-top: 1px solid var(--rule-2); }
.mis li p { margin: 0 0 4px; }
.where { margin-top: 28px; color: var(--muted); font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.chips a { display: inline-flex; align-items: center; min-height: 34px; padding: 4px 12px; border: 1px solid var(--rule); border-radius: 999px; font-size: 14.5px; text-decoration: none; }
.chips a:hover { border-color: var(--ink); }
.chips code { background: none; padding: 0; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 40px; }
.pager a { display: grid; gap: 4px; padding: 14px 16px; border: 1px solid var(--rule); border-radius: var(--r-2); text-decoration: none; font-weight: 500; }
.pager a:hover { border-color: var(--ink); }
.pager a[rel="next"] { text-align: right; grid-column: 2; }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pager a[rel="next"] { grid-column: 1; } }

/* ошибки */
.err { padding-top: 6px; }
.err h2 { font-size: 24px; margin-top: 38px; }
.err-msg { margin: 0 0 14px; padding: 12px 16px; border-left: 3px solid var(--bad); background: var(--bad-soft); border-radius: 0 var(--r) var(--r) 0; overflow-x: auto; font: 400 14.5px/1.5 var(--mono); }
.err dl { margin: 0; }
.err dt { margin-top: 10px; font: 500 12px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.err dd { margin: 2px 0 0; }

/* призыв */
.cta { margin: 44px 0 8px; padding: 24px 24px 22px; border: 1px solid var(--ink); border-radius: var(--r-2); background: var(--paper-3); box-shadow: 6px 6px 0 var(--mark); }
.cta-title { margin: 8px 0 8px; font: 500 25px/1.2 var(--serif); }
.cta p { color: var(--ink-2); }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin: 16px 0 0; }

/* оглавление справочника */
.search { margin: 0 0 8px; }
.search input { display: block; width: 100%; height: 50px; margin-top: 8px; padding: 0 16px; border: 1px solid var(--ink); border-radius: var(--r); background: var(--paper-3); color: var(--ink); font: 400 17px var(--sans); }
.group h2 { display: grid; gap: 4px; }
.terms { list-style: none; margin: 0; padding: 0; columns: 2 300px; column-gap: 28px; }
.terms li { break-inside: avoid; }
.terms a { display: grid; gap: 2px; padding: 10px 0; border-top: 1px solid var(--rule-2); text-decoration: none; }
.terms a:hover b { box-shadow: inset 0 -.45em 0 var(--mark); }
.terms a span { color: var(--muted); font-size: 14.5px; line-height: 1.45; }
.terms code { background: none; padding: 0; font-size: .95em; }

/* статья */
.draft { padding: 10px 14px; border: 1px dashed var(--ink); border-radius: var(--r); font: 400 13.5px/1.5 var(--mono); }
.toc { margin: 0 0 30px; padding: 16px 20px; border: 1px solid var(--rule); border-radius: var(--r-2); }
.toc ol { margin: 8px 0 0; padding-left: 22px; }
.toc li { margin: 3px 0; }
.prose ul, .prose ol { padding-left: 24px; margin: 0 0 16px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--muted); }
.note { margin: 20px 0; padding: 14px 18px; border-left: 4px solid var(--mark); background: var(--paper-3); }
.note p { margin: 0; }
.plain { color: var(--code-ink); }
.faq { border-top: 1px solid var(--rule); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: var(--ink-2); }
.more { margin-top: 30px; }
.posts { list-style: none; margin: 10px 0 0; padding: 0; }
.posts a { display: grid; gap: 6px; padding: 20px 0; border-top: 1px solid var(--rule); text-decoration: none; }
.posts b { font: 500 25px/1.2 var(--serif); }
.posts a:hover b { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.posts a > span:last-child { color: var(--ink-2); }

/* подвал */
.foot { border-top: 1px solid var(--rule); padding: 30px 0 40px; font-size: 14.5px; color: var(--ink-2); }
.foot .wrap { max-width: 1120px; }
.foot-row { display: grid; gap: 14px; }
.foot-tag { margin: 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.foot-meta { margin: 0; font: 400 12.5px var(--mono); color: var(--muted); }

@media (max-width: 560px) {
  body { font-size: 16.5px; }
  .wrap, main.wrap { padding-left: 16px; padding-right: 16px; }
  .lead { font-size: 18px; }
  .code pre { padding: 14px; font-size: 14px; }
  .cta { padding: 20px 18px; box-shadow: 4px 4px 0 var(--mark); }
}
@media (prefers-reduced-motion: reduce) { .logo-mark i { animation: none; } }
@media print { .top, .foot, .cta { display: none; } }
.code-out.bad pre { color: var(--tok-bad); }