/* ==========================================================================
   Курс по Yii 2 · стили
   Токены темы → базовая типографика → каркас → компоненты → главная → печать
   ========================================================================== */

:root {
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --bg: #f6f5f1;
  --bg-elev: #ffffff;
  --bg-sunken: #edebe4;
  --bg-hover: #ebe9e2;
  --fg: #1b1d20;
  --fg-muted: #5b6168;
  --fg-faint: #8a9098;
  --line: #e1dfd8;
  --line-strong: #cfcdc4;
  --accent: #0d8f6f;
  --accent-strong: #0a7359;
  --accent-soft: #dcf2ea;
  --accent-fg: #ffffff;
  --link: #0a7359;
  --shadow: 0 1px 2px rgba(20, 22, 26, .06), 0 8px 24px -12px rgba(20, 22, 26, .18);
  --shadow-lg: 0 24px 60px -20px rgba(20, 22, 26, .35);
  --radius: 12px;
  --radius-sm: 8px;

  --code-bg: #f0eee8;
  --code-fg: #24292f;
  --code-line: #e6e3db;
  --t-cm: #6e7781;
  --t-st: #0a3069;
  --t-kw: #cf222e;
  --t-lt: #0550ae;
  --t-nu: #0550ae;
  --t-va: #953800;
  --t-fn: #8250df;
  --t-cl: #116329;
  --t-ct: #0550ae;
  --t-tg: #116329;
  --t-at: #8250df;
  --t-pk: #0550ae;
  --t-tp: #cf222e;
  --t-ins-bg: #dafbe1;
  --t-del-bg: #ffebe9;

  --note: #2f6fed;   --note-bg: #eaf1ff;
  --tip: #0d8f6f;    --tip-bg: #e3f5ee;
  --warning: #c77800; --warning-bg: #fff4de;
  --gotcha: #d63b3b; --gotcha-bg: #ffecec;
  --why: #7c4dff;    --why-bg: #f0ebff;
  --example: #0e8b9b; --example-bg: #e2f5f8;

  --dg-node: #ffffff;
  --dg-stroke: #b9c4c0;
  --dg-arrow: #8a9590;
  --dg-io: #e3f5ee;
  --dg-data: #fff4de;

  --topbar-h: 58px;
  --sidebar-w: 276px;
  --toc-w: 228px;
  --content-w: 800px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1216;
    --bg-elev: #171b21;
    --bg-sunken: #0b0e11;
    --bg-hover: #1f242c;
    --fg: #e7e9ec;
    --fg-muted: #a1a8b0;
    --fg-faint: #6f767e;
    --line: #262b33;
    --line-strong: #353b45;
    --accent: #3ddc97;
    --accent-strong: #6ee7b5;
    --accent-soft: #11332a;
    --accent-fg: #06110c;
    --link: #3ddc97;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
    --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, .7);

    --code-bg: #12161c;
    --code-fg: #d6dbe1;
    --code-line: #232932;
    --t-cm: #8b949e;
    --t-st: #a5d6ff;
    --t-kw: #ff7b72;
    --t-lt: #79c0ff;
    --t-nu: #79c0ff;
    --t-va: #ffa657;
    --t-fn: #d2a8ff;
    --t-cl: #7ee787;
    --t-ct: #79c0ff;
    --t-tg: #7ee787;
    --t-at: #d2a8ff;
    --t-pk: #79c0ff;
    --t-tp: #ff7b72;
    --t-ins-bg: #12351c;
    --t-del-bg: #3d1517;

    --note: #6ea0ff;   --note-bg: #16233a;
    --tip: #3ddc97;    --tip-bg: #11332a;
    --warning: #f5b642; --warning-bg: #3a2c0f;
    --gotcha: #ff6b6b; --gotcha-bg: #3a1717;
    --why: #b39dff;    --why-bg: #261d45;
    --example: #4fd1e0; --example-bg: #0f2f35;

    --dg-node: #1b2027;
    --dg-stroke: #3a444d;
    --dg-arrow: #6f7a84;
    --dg-io: #11332a;
    --dg-data: #3a2c0f;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1216;
  --bg-elev: #171b21;
  --bg-sunken: #0b0e11;
  --bg-hover: #1f242c;
  --fg: #e7e9ec;
  --fg-muted: #a1a8b0;
  --fg-faint: #6f767e;
  --line: #262b33;
  --line-strong: #353b45;
  --accent: #3ddc97;
  --accent-strong: #6ee7b5;
  --accent-soft: #11332a;
  --accent-fg: #06110c;
  --link: #3ddc97;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
  --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, .7);

  --code-bg: #12161c;
  --code-fg: #d6dbe1;
  --code-line: #232932;
  --t-cm: #8b949e;
  --t-st: #a5d6ff;
  --t-kw: #ff7b72;
  --t-lt: #79c0ff;
  --t-nu: #79c0ff;
  --t-va: #ffa657;
  --t-fn: #d2a8ff;
  --t-cl: #7ee787;
  --t-ct: #79c0ff;
  --t-tg: #7ee787;
  --t-at: #d2a8ff;
  --t-pk: #79c0ff;
  --t-tp: #ff7b72;
  --t-ins-bg: #12351c;
  --t-del-bg: #3d1517;

  --note: #6ea0ff;   --note-bg: #16233a;
  --tip: #3ddc97;    --tip-bg: #11332a;
  --warning: #f5b642; --warning-bg: #3a2c0f;
  --gotcha: #ff6b6b; --gotcha-bg: #3a1717;
  --why: #b39dff;    --why-bg: #261d45;
  --example: #4fd1e0; --example-bg: #0f2f35;

  --dg-node: #1b2027;
  --dg-stroke: #3a444d;
  --dg-arrow: #6f7a84;
  --dg-io: #11332a;
  --dg-data: #3a2c0f;
}

/* --------------------------------------------------------------------------
   База
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
/* JetBrains Mono склеивает === => -> ?? |> // в один знак: `===` выглядит как ≡,
   а это уже другой оператор. Правило стоит на html и наследуется, поэтому
   накрывает любой элемент — и код, и подписи, и то, что появится позже. */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-variant-ligatures: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.menu-open, body.search-open { overflow: hidden; }
a { color: var(--link); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img, svg { max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }
kbd {
  font-family: var(--mono); font-size: .78em; padding: 1px 6px; border-radius: 5px;
  border: 1px solid var(--line-strong); border-bottom-width: 2px; background: var(--bg-elev); color: var(--fg-muted);
  white-space: nowrap;
}
mark { background: color-mix(in srgb, var(--warning) 30%, transparent); color: inherit; border-radius: 3px; padding: 0 2px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-fg); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* --------------------------------------------------------------------------
   Шапка
   -------------------------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 10px;
  padding: 0 16px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--fg); font-weight: 600; letter-spacing: -.01em; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid; place-items: center; height: 30px; padding: 0 9px; border-radius: 8px;
  background: var(--accent); color: var(--accent-fg); font-weight: 700; font-size: 14px; letter-spacing: 0;
}
.brand-text { font-size: 15px; color: var(--fg-muted); }
.icon-btn {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid transparent; background: transparent; cursor: pointer; color: var(--fg-muted);
}
.icon-btn:hover { background: var(--bg-hover); color: var(--fg); text-decoration: none; }
.icon-btn svg { width: 20px; height: 20px; }
.menu-btn { display: none; }
.ico-moon { display: none; }
:root[data-theme="dark"] .ico-sun { display: none; }
:root[data-theme="dark"] .ico-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ico-sun { display: none; }
  :root:not([data-theme="light"]) .ico-moon { display: block; }
}
.search-btn {
  margin-left: auto; display: flex; align-items: center; gap: 8px;
  height: 38px; padding: 0 10px 0 12px; min-width: 260px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--bg-elev); color: var(--fg-faint);
  cursor: text; font-size: 14px;
}
.search-btn:hover { border-color: var(--line-strong); color: var(--fg-muted); }
.search-btn svg { width: 18px; height: 18px; flex: none; }
.search-btn-text { flex: 1; text-align: left; }
.search-kbd { font-size: 11px; }
.topbar-right { display: flex; align-items: center; gap: 4px; }
.progress-pill {
  display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 10px 0 6px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--fg-muted); font-size: 12px; font-weight: 600; background: var(--bg-elev);
}
.progress-pill:hover { text-decoration: none; border-color: var(--accent); color: var(--fg); }
.progress-pill svg { width: 22px; height: 22px; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: var(--line-strong); stroke-width: 4; }
.ring-fg { fill: none; stroke: var(--accent); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 0 100; transition: stroke-dasharray .4s ease; }

/* --------------------------------------------------------------------------
   Каркас: сайдбар · контент · оглавление
   -------------------------------------------------------------------------- */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  max-width: 1440px; margin: 0 auto;
}
.sidebar {
  position: sticky; top: var(--topbar-h); height: calc(100vh - var(--topbar-h));
  overflow-y: auto; overscroll-behavior: contain;
  padding: 18px 12px 24px 16px;
  border-right: 1px solid var(--line);
  font-size: 14px;
  scrollbar-width: thin;
}
.main { min-width: 0; padding: 28px 44px 80px; }
.toc {
  position: sticky; top: var(--topbar-h); height: calc(100vh - var(--topbar-h));
  overflow-y: auto; padding: 28px 18px 24px 8px; font-size: 13px; scrollbar-width: thin;
}
body.home .layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
body.home .toc { display: none; }
body.home .main { max-width: 1080px; padding-inline: 48px; }

.nav-home { display: block; padding: 6px 10px; border-radius: 8px; color: var(--fg-muted); font-weight: 500; margin-bottom: 8px; }
.nav-home:hover, .nav-home.active { background: var(--bg-hover); color: var(--fg); text-decoration: none; }
.nav-part { margin-top: 14px; }
.nav-part-title {
  display: flex; align-items: center; gap: 8px; padding: 4px 10px; margin-bottom: 2px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-faint);
}
.nav-part-icon { font-size: 13px; }
.nav-part ul { list-style: none; margin: 0; padding: 0; }
.nav-link {
  display: flex; align-items: center; gap: 8px; padding: 5px 10px; border-radius: 8px;
  color: var(--fg-muted); line-height: 1.35;
}
.nav-link:hover { background: var(--bg-hover); color: var(--fg); text-decoration: none; }
.nav-link.active { background: var(--accent-soft); color: var(--fg); font-weight: 600; }
.nav-num { font-family: var(--mono); font-size: 11px; color: var(--fg-faint); width: 20px; flex: none; }
.nav-link.active .nav-num { color: var(--link); }
.nav-text { flex: 1; }
.nav-done { width: 16px; height: 16px; flex: none; color: var(--accent); opacity: 0; transform: scale(.6); transition: .2s; }
.nav-link.done .nav-done, .parts-grid a.done .nav-done { opacity: 1; transform: none; }
.nav-link.done .nav-text { color: var(--fg-faint); }
.sidebar-foot { margin-top: 26px; padding: 14px 10px 0; border-top: 1px solid var(--line); display: grid; gap: 6px; font-size: 13px; }
.link-btn { background: none; border: 0; padding: 0; color: var(--fg-faint); cursor: pointer; text-align: left; font-size: 13px; }
.link-btn:hover { color: var(--gotcha); text-decoration: underline; }
.scrim { display: none; position: fixed; inset: var(--topbar-h) 0 0 0; background: rgba(0, 0, 0, .45); z-index: 30; }

.toc-title { font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-faint); margin-bottom: 8px; }
.toc-list { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc-list a { display: block; padding: 4px 10px; color: var(--fg-muted); border-left: 2px solid transparent; margin-left: -1px; line-height: 1.4; }
.toc-list a:hover { color: var(--fg); text-decoration: none; }
.toc-list a.active { color: var(--link); border-left-color: var(--accent); font-weight: 600; }
.toc-l3 a { padding-left: 22px; font-size: 12.5px; }

/* --------------------------------------------------------------------------
   Документ
   -------------------------------------------------------------------------- */
.doc { max-width: var(--content-w); margin: 0 auto; }
.crumbs { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--fg-faint); margin-bottom: 14px; }
.crumbs a { color: var(--fg-faint); }
.crumb-part { color: var(--fg-muted); font-weight: 500; }
.crumb-icon { margin-right: 6px; }
.doc-head h1 { font-size: 2.15rem; line-height: 1.15; letter-spacing: -.02em; margin: 0 0 10px; font-weight: 700; }
.doc-num { font-family: var(--mono); font-weight: 500; font-size: 1.05rem; color: var(--link); margin-right: 12px; vertical-align: .35em; }
.doc-summary { font-size: 1.12rem; color: var(--fg-muted); margin: 0 0 16px; line-height: 1.55; }
.doc-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; font-size: 13.5px; color: var(--fg-muted); padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.learned { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; user-select: none; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg-elev); }
.learned:hover { border-color: var(--accent); }
.learned input { accent-color: var(--accent); width: 15px; height: 15px; margin: 0; }
.learned.big { padding: 10px 16px; font-size: 15px; }
.doc-body { margin-top: 28px; }

.doc-body h2 { font-size: 1.55rem; line-height: 1.25; letter-spacing: -.015em; margin: 2.6rem 0 1rem; padding-top: 1.4rem; border-top: 1px solid var(--line); font-weight: 700; }
.doc-body h3 { font-size: 1.2rem; margin: 2rem 0 .7rem; font-weight: 650; }
.doc-body h4 { font-size: 1rem; margin: 1.5rem 0 .5rem; font-weight: 650; color: var(--fg); }
.doc-body h2 .anchor, .doc-body h3 .anchor, .doc-body h4 .anchor { margin-left: 8px; color: var(--fg-faint); opacity: 0; font-weight: 400; text-decoration: none; }
.doc-body h2:hover .anchor, .doc-body h3:hover .anchor, .doc-body h4:hover .anchor { opacity: 1; }
.doc-body p { margin: 0 0 1rem; }
.doc-body ul, .doc-body ol { padding-left: 1.4rem; margin: 0 0 1rem; }
.doc-body li { margin: .3rem 0; }
.doc-body li > ul, .doc-body li > ol { margin: .3rem 0 .3rem; }
.doc-body li::marker { color: var(--fg-faint); }
.doc-body strong { font-weight: 650; }
.doc-body blockquote { margin: 0 0 1rem; padding: 4px 18px; border-left: 3px solid var(--line-strong); color: var(--fg-muted); }
.doc-body blockquote p:last-child { margin-bottom: 0; }
.doc-body img { border-radius: var(--radius-sm); }
code, pre { font-family: var(--mono); }

/* JetBrains Mono склеивает => -> === в один знак: `===` выглядит как ≡, а это другой оператор */
code, pre, kbd, .kv-key, .code-title, .dg-sub, .nav-num, .doc-num {
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
}
:not(pre) > code {
  font-size: .86em; padding: .12em .4em; border-radius: 6px;
  background: var(--code-bg); color: var(--fg); border: 1px solid var(--code-line);
  word-break: break-word;
}
a > code { color: inherit; }
.doc-body h1 code, .doc-body h2 code, .doc-body h3 code { font-size: .85em; }
.lead { font-size: 1.08rem; color: var(--fg); }
.lead p { line-height: 1.65; }
.compact { font-size: 15px; }
.compact li { margin: .15rem 0; }

/* таблицы */
.table-wrap { overflow-x: auto; margin: 0 0 1.2rem; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-elev); }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { padding: 9px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--fg-muted); background: var(--bg-sunken); font-weight: 650; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: color-mix(in srgb, var(--bg-hover) 50%, transparent); }
td code { white-space: nowrap; }
td:first-child code { font-weight: 500; }

/* блоки кода */
.code { position: relative; margin: 0 0 1.25rem; border: 1px solid var(--code-line); border-radius: var(--radius); background: var(--code-bg); overflow: hidden; }
.code-head { display: flex; align-items: center; gap: 10px; padding: 7px 12px; border-bottom: 1px solid var(--code-line); font-size: 12px; color: var(--fg-faint); background: color-mix(in srgb, var(--bg-sunken) 60%, transparent); }
.code-title { font-family: var(--mono); color: var(--fg-muted); }
.code-lang { margin-left: auto; margin-right: 108px; text-transform: uppercase; letter-spacing: .06em; font-size: 10.5px; font-weight: 700; }
.code pre { margin: 0; padding: 14px 16px; overflow-x: auto; font-size: 13.5px; line-height: 1.6; color: var(--code-fg); tab-size: 4; }
.code code { display: block; min-width: max-content; }
.code .copy {
  position: absolute; top: 6px; right: 8px; padding: 4px 10px; border-radius: 7px; font-size: 12px;
  border: 1px solid var(--line); background: var(--bg-elev); color: var(--fg-muted); cursor: pointer; opacity: 0; transition: opacity .15s;
}
.code:hover .copy, .code .copy:focus-visible, .code .copy.ok { opacity: 1; }
.code .copy:hover { color: var(--fg); border-color: var(--line-strong); }
.code .copy.ok { color: var(--link); border-color: var(--accent); }
.hl-line { display: inline-block; width: 100%; background: color-mix(in srgb, var(--accent) 12%, transparent); box-shadow: -16px 0 0 color-mix(in srgb, var(--accent) 12%, transparent); }
.t-cm { color: var(--t-cm); font-style: italic; }
.t-st { color: var(--t-st); }
.t-kw { color: var(--t-kw); }
.t-lt { color: var(--t-lt); }
.t-nu { color: var(--t-nu); }
.t-va { color: var(--t-va); }
.t-fn { color: var(--t-fn); }
.t-cl { color: var(--t-cl); }
.t-ct { color: var(--t-ct); }
.t-tg { color: var(--t-tg); }
.t-at { color: var(--t-at); }
.t-pk { color: var(--t-pk); }
.t-tp { color: var(--t-tp); }
.t-ins { display: inline-block; width: 100%; background: var(--t-ins-bg); }
.t-del { display: inline-block; width: 100%; background: var(--t-del-bg); }

/* callout-блоки */
.callout { margin: 0 0 1.25rem; padding: 12px 16px 4px; border-radius: var(--radius); border: 1px solid transparent; border-left: 4px solid var(--c); background: var(--c-bg); }
.callout-title { font-weight: 700; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; color: var(--c); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.callout-title::before { content: ""; width: 16px; height: 16px; flex: none; background: currentColor; -webkit-mask: var(--icon) center / contain no-repeat; mask: var(--icon) center / contain no-repeat; }
.callout-body > :last-child { margin-bottom: .5rem; }
.callout .code { background: color-mix(in srgb, var(--code-bg) 70%, var(--bg-elev)); }
.callout.note { --c: var(--note); --c-bg: var(--note-bg); --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 11v6M12 7.5v.5'/%3E%3C/svg%3E"); }
.callout.tip { --c: var(--tip); --c-bg: var(--tip-bg); --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 18h6M10 21h4M12 3a6 6 0 0 0-3.5 10.9c.7.6 1 1.3 1 2.1h5c0-.8.3-1.5 1-2.1A6 6 0 0 0 12 3z'/%3E%3C/svg%3E"); }
.callout.warning { --c: var(--warning); --c-bg: var(--warning-bg); --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3 2.5 20h19z M12 10v4M12 17v.5'/%3E%3C/svg%3E"); }
.callout.gotcha { --c: var(--gotcha); --c-bg: var(--gotcha-bg); --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M8.5 8.5l7 7M15.5 8.5l-7 7'/%3E%3C/svg%3E"); }
.callout.why { --c: var(--why); --c-bg: var(--why-bg); --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M9.5 9.5a2.5 2.5 0 1 1 3.5 2.3c-.7.3-1 .9-1 1.7M12 17v.5'/%3E%3C/svg%3E"); }
.callout.example { --c: var(--example); --c-bg: var(--example-bg); --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 5h16v14H4zM8 10l2.5 2.5L8 15M13 15h3'/%3E%3C/svg%3E"); }

/* вкладки */
.tabs { margin: 0 0 1.25rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); overflow: hidden; }
.tab-list { display: flex; gap: 2px; padding: 6px 6px 0; border-bottom: 1px solid var(--line); background: var(--bg-sunken); overflow-x: auto; }
.tab { padding: 8px 14px; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--fg-muted); cursor: pointer; font-size: 14px; font-weight: 500; white-space: nowrap; border-radius: 8px 8px 0 0; }
.tab:hover { color: var(--fg); background: var(--bg-hover); }
.tab.active { color: var(--fg); border-bottom-color: var(--accent); background: var(--bg-elev); }
.tab-panel { display: none; padding: 16px 16px 4px; }
.tab-panel.active { display: block; }
.tab-panel > .code:last-child, .tab-panel > p:last-child { margin-bottom: .75rem; }
.tab-panel .code { border-radius: var(--radius-sm); }

/* две колонки (плохо / хорошо) */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 0 0 1.25rem; }
.col { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px 2px; background: var(--bg-elev); min-width: 0; }
.col-label { font-weight: 700; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; margin-bottom: 10px; color: var(--fg-muted); }
.col.good { border-color: color-mix(in srgb, var(--tip) 45%, var(--line)); }
.col.good .col-label { color: var(--tip); }
.col.bad { border-color: color-mix(in srgb, var(--gotcha) 45%, var(--line)); }
.col.bad .col-label { color: var(--gotcha); }
.col .code { border-radius: var(--radius-sm); }

/* карточки */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; margin: 0 0 1.25rem; }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px 6px; background: var(--bg-elev); font-size: 14.5px; }
.card-title { font-weight: 650; margin-bottom: 6px; font-size: 15px; }
.card p { margin-bottom: .6rem; }
.card ul { padding-left: 1.1rem; }

/* ключ — значение */
.kv { display: grid; grid-template-columns: max-content 1fr; margin: 0 0 1.25rem; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--bg-elev); font-size: 14.5px; }
.kv-row { display: contents; }
.kv-key, .kv-val { padding: 8px 12px; border-bottom: 1px solid var(--line); }
.kv-row:last-child .kv-key, .kv-row:last-child .kv-val { border-bottom: 0; }
.kv-key { background: var(--bg-sunken); font-family: var(--mono); font-size: 13px; color: var(--fg); white-space: nowrap; max-width: 320px; overflow: hidden; text-overflow: ellipsis; }
.kv-key code { background: transparent; border: 0; padding: 0; font-size: inherit; }

/* шаги */
.steps > ol { list-style: none; padding: 0; counter-reset: step; margin: 0 0 1.25rem; }
.steps > ol > li { position: relative; padding: 2px 0 14px 46px; counter-increment: step; margin: 0; }
.steps > ol > li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-weight: 700; font-size: 14px; display: grid; place-items: center; }
.steps > ol > li:not(:last-child)::after { content: ""; position: absolute; left: 14.5px; top: 34px; bottom: 0; width: 1px; background: var(--line-strong); }
.steps > ol > li > p:first-child { font-weight: 600; margin-bottom: .4rem; }

/* details */
.details { margin: 0 0 1.25rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); }
.details summary { padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none; display: flex; align-items: center; gap: 8px; }
.details summary::-webkit-details-marker { display: none; }
.details summary::before { content: ""; width: 8px; height: 8px; border-right: 2px solid var(--fg-faint); border-bottom: 2px solid var(--fg-faint); transform: rotate(-45deg); transition: transform .15s; margin-right: 4px; }
.details[open] summary::before { transform: rotate(45deg); }
.details-body { padding: 0 16px 6px; border-top: 1px solid var(--line); padding-top: 12px; }

/* карточки самопроверки */
.quiz { margin: 2rem 0 1.25rem; border: 1px solid color-mix(in srgb, var(--why) 40%, var(--line)); border-radius: var(--radius); background: var(--bg-elev); overflow: hidden; }
.quiz-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--why-bg); border-bottom: 1px solid color-mix(in srgb, var(--why) 30%, var(--line)); }
.quiz-title { font-weight: 700; color: var(--why); }
.quiz-title::before { content: "🃏 "; }
.quiz-count { font-size: 12px; font-weight: 700; color: var(--why); background: color-mix(in srgb, var(--why) 18%, transparent); border-radius: 999px; padding: 1px 9px; }
.quiz-all { margin-left: auto; border: 1px solid color-mix(in srgb, var(--why) 40%, transparent); background: transparent; color: var(--why); border-radius: 8px; padding: 4px 10px; font-size: 13px; cursor: pointer; }
.quiz-all:hover { background: color-mix(in srgb, var(--why) 14%, transparent); }
.qcard { border-bottom: 1px solid var(--line); }
.qcard:last-child { border-bottom: 0; }
.qcard-q { width: 100%; display: flex; align-items: flex-start; gap: 12px; padding: 12px 16px; border: 0; background: transparent; text-align: left; cursor: pointer; font-size: 15px; line-height: 1.5; }
.qcard-q:hover { background: var(--bg-hover); }
.qcard-n { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--why-bg); color: var(--why); font-size: 12px; font-weight: 700; display: grid; place-items: center; margin-top: 1px; }
.qcard-text { flex: 1; }
.qcard-text p { margin: 0; }
.qcard-arrow { flex: none; width: 9px; height: 9px; margin-top: 8px; border-right: 2px solid var(--fg-faint); border-bottom: 2px solid var(--fg-faint); transform: rotate(45deg); transition: transform .15s; }
.qcard.open .qcard-arrow { transform: rotate(-135deg); }
.qcard-a { display: none; padding: 0 16px 14px 52px; color: var(--fg); font-size: 15px; }
.qcard.open .qcard-a { display: block; animation: fade .2s ease; }
.qcard-a p:last-child { margin-bottom: 0; }
.qcard-a .code { margin-top: .5rem; }
@keyframes fade { from { opacity: 0; transform: translateY(-3px); } to { opacity: 1; transform: none; } }

/* диаграммы */
.diagram { margin: 0 0 1.5rem; padding: 18px 12px 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); text-align: center; }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption { font-size: 13.5px; color: var(--fg-muted); margin-top: 10px; text-align: left; }
.diagram figcaption p { margin: 0; }
.dg { font-family: var(--font); }
.dg-node rect { fill: var(--dg-node); stroke: var(--dg-stroke); stroke-width: 1.5; }
.dg-node-io rect { fill: var(--dg-io); }
.dg-node-data rect { fill: var(--dg-data); }
.dg-label { fill: var(--fg); font-size: 14px; font-weight: 600; text-anchor: middle; }
.dg-sub { fill: var(--fg-muted); font-size: 11px; text-anchor: middle; font-family: var(--mono); }
.dg-note { fill: var(--fg-faint); font-size: 11.5px; }
.dg-arrows path { fill: none; stroke: var(--dg-arrow); stroke-width: 1.6; }
.dg-arrowhead { fill: var(--dg-arrow); }
.dg-link:hover rect { stroke: var(--accent); stroke-width: 2; }
.dg-link { cursor: pointer; }
.dg-edge { fill: none; stroke: var(--dg-arrow); stroke-width: 1.6; }
.dg-edge.dashed { stroke-dasharray: 5 4; }
.dg-box rect { fill: var(--bg-sunken); stroke: var(--line-strong); stroke-width: 1; stroke-dasharray: 5 4; }
.dg-box text { fill: var(--fg-faint); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; }
.dg-accent rect { fill: var(--accent-soft); stroke: var(--accent); }

/* подвал документа */
.doc-foot { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.sources summary { cursor: pointer; color: var(--fg-muted); font-size: 14px; font-weight: 500; }
.sources ul { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 4px; font-size: 14px; }
.sources a { color: var(--fg); }
.src-part { display: inline-block; font-size: 11px; color: var(--fg-faint); text-transform: uppercase; letter-spacing: .05em; margin-right: 8px; min-width: 150px; }
.learned-cta {
  margin: 24px 0;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
/* ссылка на вопросы этого раздела — рядом с отметкой «изучено»: прочитал — проверься */
.quiz-cta {
  margin-left: auto;
  display: inline-flex; align-items: baseline; gap: 10px;
  padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--bg-elev); color: var(--fg); font-weight: 600; font-size: 15px;
  white-space: nowrap; transition: border-color .15s, color .15s;
}
.quiz-cta::after { content: "→"; color: var(--fg-faint); }
.quiz-cta:hover { border-color: var(--note); color: var(--note); text-decoration: none; }
.quiz-cta:hover::after { color: var(--note); }
.quiz-cta-n {
  font-weight: 400; font-size: 13px; color: var(--fg-faint);
  font-variant-numeric: tabular-nums;
}
@media (max-width: 560px) {
  .quiz-cta { margin-left: 0; width: 100%; justify-content: center; }
}
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 1rem; }
.pager-link { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); color: var(--fg); }
.pager-link:hover { border-color: var(--accent); text-decoration: none; }
.pager-link.next { text-align: right; align-items: flex-end; }
.pager-label { font-size: 12px; color: var(--fg-faint); }
.pager-title { font-weight: 600; }

/* кнопки */
.btn { display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--fg); font-weight: 600; cursor: pointer; font-size: 15px; }
.btn:hover { border-color: var(--fg-faint); text-decoration: none; }
.btn.primary, a.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.btn kbd { font-size: 11px; }

.to-top { position: fixed; right: 22px; bottom: 22px; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line); background: var(--bg-elev); color: var(--fg-muted); box-shadow: var(--shadow); cursor: pointer; display: grid; place-items: center; opacity: 0; pointer-events: none; transition: .2s; z-index: 20; }
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top svg { width: 20px; height: 20px; }

/* --------------------------------------------------------------------------
   Поиск
   -------------------------------------------------------------------------- */
.search { position: fixed; inset: 0; z-index: 60; }
.search[hidden] { display: none; }
.search-backdrop { position: absolute; inset: 0; background: rgba(10, 12, 14, .5); backdrop-filter: blur(3px); }
.search-panel { position: relative; width: min(720px, 94vw); margin: 9vh auto 0; background: var(--bg-elev); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-lg); overflow: hidden; display: flex; flex-direction: column; max-height: 78vh; }
.search-field { display: flex; align-items: center; gap: 10px; padding: 8px 12px 8px 16px; border-bottom: 1px solid var(--line); }
.search-field svg { width: 20px; height: 20px; color: var(--fg-faint); flex: none; }
.search-field input { flex: 1; border: 0; background: transparent; font: inherit; font-size: 17px; color: var(--fg); padding: 10px 0; outline: none; min-width: 0; }
.search-field input::-webkit-search-cancel-button { display: none; }
.search-close { border: 1px solid var(--line); background: transparent; color: var(--fg-faint); border-radius: 6px; font-size: 12px; padding: 2px 7px; cursor: pointer; font-family: var(--mono); }
.search-results { overflow-y: auto; padding: 6px; }
.sr-group { padding: 10px 12px 4px; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-faint); }
.sr-item { display: block; padding: 8px 12px; border-radius: 8px; color: var(--fg); }
.sr-item:hover { text-decoration: none; }
.sr-item.selected { background: var(--accent-soft); }
.sr-title { display: block; font-weight: 600; font-size: 14.5px; }
.sr-text { display: block; font-size: 13px; color: var(--fg-muted); margin-top: 2px; line-height: 1.45; }
.sr-empty { padding: 28px 16px; text-align: center; color: var(--fg-muted); }
.search-foot { display: flex; gap: 10px; align-items: center; padding: 8px 14px; border-top: 1px solid var(--line); font-size: 12px; color: var(--fg-faint); background: var(--bg-sunken); }

/* --------------------------------------------------------------------------
   Главная
   -------------------------------------------------------------------------- */
.home h2 { font-size: 1.6rem; letter-spacing: -.015em; margin: 0 0 .5rem; }
.section-lead { color: var(--fg-muted); margin: 0 0 1.2rem; max-width: 720px; }
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; padding: 30px 0 40px; }
.eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--link); margin: 0 0 14px; }
.hero h1 { font-size: clamp(2.2rem, 4.2vw, 3.3rem); line-height: 1.08; letter-spacing: -.03em; margin: 0 0 18px; font-weight: 800; }
.hero .accent { color: var(--link); }
.hero .lead { font-size: 1.12rem; color: var(--fg-muted); margin: 0 0 24px; max-width: 560px; line-height: 1.6; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.hero-stats { list-style: none; display: flex; gap: 28px; padding: 0; margin: 0; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b { font-size: 1.6rem; letter-spacing: -.02em; font-weight: 800; line-height: 1.1; }
.hero-stats span { font-size: 13px; color: var(--fg-faint); }
.hero-art { min-width: 0; }
.hero-code { margin: 0; box-shadow: var(--shadow-lg); transform: rotate(-1deg); }
.hero-code pre { font-size: 12.5px; }
.hero-code .code-lang { margin-right: 0; }

.progress-section { display: grid; grid-template-columns: 1fr; gap: 20px; margin: 10px 0 48px; }
.progress-card { display: grid; grid-template-columns: 1fr auto; gap: 8px 24px; align-items: center; padding: 20px 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--bg-elev); }
.progress-card h2 { font-size: 1.15rem; margin: 0 0 4px; }
.progress-card p { margin: 0; color: var(--fg-muted); font-size: 14.5px; }
.progress-card .btn { grid-row: 1 / span 2; }
.progress-bar { height: 10px; border-radius: 999px; background: var(--bg-sunken); overflow: hidden; }
.progress-bar-fill { height: 100%; width: 0; border-radius: 999px; background: var(--accent); transition: width .4s ease; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.how-card { padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--bg-elev); }
.how-icon { font-size: 26px; margin-bottom: 8px; }
.how-card h3 { margin: 0 0 6px; font-size: 1.02rem; }
.how-card p { margin: 0; font-size: 14.5px; color: var(--fg-muted); }

.lifecycle-section { margin: 0 0 48px; }
.home-diagram { padding: 24px 16px 12px; }

.parts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.part-card { border: 1px solid var(--line); border-radius: 16px; background: var(--bg-elev); padding: 18px 18px 12px; transition: border-color .15s; }
.part-card:hover { border-color: var(--line-strong); }
.part-card-head { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; }
.part-card-icon { font-size: 26px; line-height: 1; margin-top: 2px; }
.part-card h3 { margin: 0 0 3px; font-size: 1.08rem; }
.part-card p { margin: 0; font-size: 13.5px; color: var(--fg-muted); line-height: 1.45; }
.part-card ul { list-style: none; margin: 0; padding: 0; }
.part-card li a { display: flex; align-items: center; gap: 8px; padding: 6px 8px; margin: 0 -8px; border-radius: 8px; color: var(--fg); font-size: 14.5px; }
.part-card li a:hover { background: var(--bg-hover); text-decoration: none; }
.part-card li a.done { color: var(--fg-faint); }
.part-card .nav-done { margin-left: auto; }
.home-foot { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; color: var(--fg-muted); }

/* --------------------------------------------------------------------------
   «Всё одной страницей»
   -------------------------------------------------------------------------- */
.all-doc { max-width: 860px; }
.all-part { font-size: 1.9rem; margin: 3.5rem 0 1rem; padding-top: 2rem; border-top: 3px solid var(--accent); letter-spacing: -.02em; }
.all-title { font-size: 1.6rem; margin: 2.5rem 0 .3rem; letter-spacing: -.02em; }
.all-title .nav-num { font-size: 1rem; margin-right: 10px; color: var(--link); }
.all-summary { color: var(--fg-muted); font-size: 1.02rem; margin-bottom: 1rem; }
.all-page .doc-body-inner { margin-top: 0; }

/* --------------------------------------------------------------------------
   Адаптив
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
  .main { padding-inline: 36px; }
}
@media (max-width: 900px) {
  .layout, body.home .layout { grid-template-columns: 1fr; }
  .sidebar { position: fixed; top: var(--topbar-h); left: 0; width: min(320px, 86vw); z-index: 35; background: var(--bg); transform: translateX(-104%); transition: transform .22s ease; box-shadow: var(--shadow-lg); }
  .sidebar.open { transform: none; }
  body.menu-open .scrim { display: block; }
  .menu-btn { display: inline-grid; }
  .main, body.home .main { padding: 20px 16px 64px; }
  .search-btn { min-width: 0; width: 38px; padding: 0; justify-content: center; margin-left: auto; border-radius: 10px; }
  .search-btn-text, .search-kbd { display: none; }
  .brand-text { display: none; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding: 12px 0 28px; }
  .hero-code { transform: none; }
  .how-grid { grid-template-columns: 1fr; }
  .progress-card { grid-template-columns: 1fr; }
  .progress-card .btn { grid-row: auto; justify-content: center; }
  .cols { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; }
  .kv-key { border-bottom: 0; padding-bottom: 2px; max-width: none; white-space: normal; }
  .doc-head h1 { font-size: 1.7rem; }
  .pager { grid-template-columns: 1fr; }
  .pager-link.next { align-items: flex-start; text-align: left; }
  .code pre { font-size: 12.5px; }
  .code .copy { opacity: 1; }
  .code-lang { margin-right: 108px; }
  .gh { display: none; }
  .to-top { right: 14px; bottom: 14px; }
}

/* --------------------------------------------------------------------------
   Печать
   -------------------------------------------------------------------------- */
@media print {
  .topbar, .sidebar, .toc, .to-top, .search, .copy, .learned, .learned-cta, .pager, .scrim, .quiz-all, .doc-meta .btn { display: none !important; }
  .layout { display: block; }
  .main { padding: 0; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .code { break-inside: avoid; border-color: #ccc; }
  .code pre { white-space: pre-wrap; font-size: 9.5pt; }
  .qcard-a { display: block !important; }
  .tab-panel { display: block !important; }
  .tab-panel::before { content: attr(data-label); font-weight: 700; }
  a::after { content: none; }
  h2 { break-after: avoid; }
}

/* ---------- блок «Справочник» на главной ---------- */

.explorer-section { margin: 0 0 48px; }
.explorer-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(135deg, var(--accent-soft), transparent 60%),
    var(--bg-elev);
  color: inherit;
  text-decoration: none;
  transition: border-color .16s, transform .16s;
}
.explorer-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}
.explorer-eyebrow {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-strong);
}
.explorer-card h2 { margin: 0 0 8px; font-size: 1.3rem; }
.explorer-text p { margin: 0; color: var(--fg-muted); font-size: 15px; max-width: 62ch; }
.explorer-go {
  display: inline-block;
  margin-top: 14px;
  font-weight: 600;
  font-size: 15px;
  color: var(--accent-strong);
}
.explorer-stats {
  display: grid;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  border-left: 1px solid var(--line);
  flex: 0 0 auto;
}
.explorer-stats b {
  display: block;
  font-size: 22px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.explorer-stats span { font-size: 12.5px; color: var(--fg-muted); }

@media (max-width: 760px) {
  .explorer-card { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
  .explorer-stats {
    grid-template-columns: repeat(3, 1fr);
    padding: 16px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

/* --------------------------------------------------------------------------
   Хаб: выбор между курсом, справочником и выжимкой
   -------------------------------------------------------------------------- */

body.hub {
  /* мягкий отлив в углу: на плоской заливке страница выглядит старше, чем она есть */
  background-color: var(--bg);
  background-image: linear-gradient(152deg, var(--accent-soft), transparent 46rem);
  background-repeat: no-repeat;
}

.hub-top {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
}
.hub-spacer { flex: 1 1 auto; }

.hub-main { max-width: 1100px; margin: 0 auto; padding: 0 24px 10px; }

.hub-hero { padding-block: 16px 12px; max-width: 720px; }
.hub-hero .eyebrow { margin-bottom: 10px; }
.hub-hero h1 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem); line-height: 1.06;
  letter-spacing: -.03em; font-weight: 800; margin: 0 0 10px;
}
.hub-hero .lead { font-size: 1.12rem; color: var(--fg-muted); margin: 0; line-height: 1.6; }

/* Сетка на шесть долей: три карточки по две доли в первом ряду, две по три —
   во втором. Так пять карточек укладываются в два ряда и страница остаётся
   без вертикальной прокрутки. */
.hub-cards {
  display: grid; gap: 14px;
  grid-template-columns: repeat(6, 1fr);
  align-items: stretch;
}
.hub-cards > .hub-card { grid-column: span 2; }
.hub-cards > .hub-card-half { grid-column: span 3; }

@media (max-width: 940px) {
  .hub-cards { grid-template-columns: repeat(2, 1fr); }
  .hub-cards > .hub-card,
  .hub-cards > .hub-card-half { grid-column: span 1; }
}
@media (max-width: 620px) {
  .hub-cards { grid-template-columns: 1fr; }
}
.hub-card {
  --hc: var(--accent);
  display: flex; flex-direction: column; gap: 10px;
  padding: 20px 24px 20px;
  border: 1px solid var(--line); border-top: 3px solid var(--hc);
  border-radius: var(--radius);
  background: var(--bg-elev); color: var(--fg);
  box-shadow: var(--shadow);
  transition: transform .16s ease, border-color .16s, box-shadow .16s;
}
/* карточка во всю ширину: осталась для случая, когда во втором ряду она одна */
.hub-cards > .hub-card-wide { grid-column: 1 / -1; }
.hub-card-wide p, .hub-card-half p { max-width: 68ch; }
/* во втором ряду карточки служебные: цифры ушли в надпись сверху, поэтому они ниже */
.hub-card-half { padding-block: 16px; gap: 8px; }
.hub-card-half .hub-kind { letter-spacing: .08em; }

.hub-card:hover {
  text-decoration: none; transform: translateY(-3px);
  border-color: var(--hc); box-shadow: var(--shadow-lg);
}
/* общая обводка фокуса зелёная: на оранжевой и фиолетовой карточке это читалось как чужой элемент */
.hub-card:focus-visible { outline-color: var(--hc); }
.hub-kind {
  align-self: flex-start;
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--hc); border: 1px solid var(--hc); border-radius: 999px; padding: 3px 10px;
}
.hub-card h2 {
  margin: 2px 0 0; font-size: 1.45rem; font-weight: 800;
  letter-spacing: -.02em; line-height: 1.15;
}
.hub-card p { margin: 0; color: var(--fg-muted); line-height: 1.6; font-size: .97rem; }
.hub-stats {
  list-style: none; margin: 4px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px 18px;
  font-size: 13px; color: var(--fg-faint);
}
.hub-stats b {
  font-size: 15px; font-weight: 700; color: var(--fg);
  font-variant-numeric: tabular-nums; margin-right: 4px;
}
.hub-go { margin-top: auto; padding-top: 6px; font-weight: 600; color: var(--hc); }

.hub-foot {
  margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line);
  color: var(--fg-faint); font-size: 13.5px; line-height: 1.6; max-width: 820px;
}
.hub-foot p { margin: 0; }

@media (max-width: 640px) {
  .hub-top { padding: 12px 16px; }
  .hub-main { padding-inline: 16px; }
  .hub-hero { padding-block: 24px 20px; }
}