:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --sidebar: #f3f1ec;
  --text: #1f1e1c;
  --muted: #6b6862;
  --border: #e4e0d8;
  --accent: #c2603e;
  --accent-soft: #f6e6df;
  --accent-text: #a44e2f;
  --ok: #2f7a4f;
  --ok-soft: #e3f1e8;
  --hover: #ebe8e1;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 4px 16px rgba(0, 0, 0, .04);
  --sidebar-w: 288px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1b1a18;
    --surface: #242320;
    --sidebar: #201f1c;
    --text: #ece9e3;
    --muted: #a19d95;
    --border: #36342f;
    --accent: #e07c58;
    --accent-soft: #3a2a22;
    --accent-text: #f0a184;
    --ok: #6cc391;
    --ok-soft: #1f3328;
    --hover: #2c2a26;
    --shadow: none;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #1b1a18;
  --surface: #242320;
  --sidebar: #201f1c;
  --text: #ece9e3;
  --muted: #a19d95;
  --border: #36342f;
  --accent: #e07c58;
  --accent-soft: #3a2a22;
  --accent-text: #f0a184;
  --ok: #6cc391;
  --ok-soft: #1f3328;
  --hover: #2c2a26;
  --shadow: none;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.layout { display: flex; min-height: 100vh; }

/* ---------- Ліве меню ---------- */

.sidebar {
  position: sticky;
  top: 0;
  width: var(--sidebar-w);
  height: 100vh;
  flex: none;
  display: flex;
  flex-direction: column;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 20px 16px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-title { font-weight: 700; font-size: 15px; }
.brand-sub { font-size: 12.5px; color: var(--muted); }

.search {
  position: relative;
  margin: 0 16px 12px;
}

.search svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--muted); width: 16px; height: 16px; }

.search input {
  width: 100%;
  padding: 8px 10px 8px 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
}

.search input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }

.nav {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px 16px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
}

.nav-item:hover { background: var(--hover); }

.nav-item.active { background: var(--accent-soft); color: var(--accent-text); }

.nav-num {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: none;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.nav-item.active .nav-num { background: var(--accent); border-color: var(--accent); color: #fff; }

.nav-label { flex: 1; min-width: 0; }

.nav-status { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); flex: none; }

.nav-sub {
  margin: 2px 0 8px 22px;
  padding-left: 12px;
  border-left: 1px solid var(--border);
  display: none;
}

.nav-group.open .nav-sub { display: block; }

.nav-sub a {
  display: block;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  line-height: 1.4;
}

.nav-sub a:hover { background: var(--hover); color: var(--text); }
.nav-sub a.current { color: var(--accent-text); font-weight: 500; }

.nav-divider { height: 1px; background: var(--border); margin: 8px 10px; }

.nav-empty { padding: 12px 10px; font-size: 14px; color: var(--muted); }

mark { background: var(--accent-soft); color: inherit; border-radius: 3px; padding: 0 1px; }

.sidebar-footer { padding: 12px 16px; border-top: 1px solid var(--border); }

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.theme-toggle:hover { background: var(--hover); color: var(--text); }

/* ---------- Основна частина ---------- */

.main-wrap { flex: 1; min-width: 0; }

.topbar { display: none; }

.main {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 40px 80px;
  outline: none;
}

.eyebrow { font-size: 13px; font-weight: 600; color: var(--accent-text); letter-spacing: .02em; margin-bottom: 8px; }

h1 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -.02em; }

.lead { font-size: 18px; color: var(--muted); margin: 0 0 20px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  background: var(--hover);
  color: var(--muted);
}

.badge.ok { background: var(--ok-soft); color: var(--ok); }

.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.toc {
  margin: 32px 0 8px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.toc-title { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 6px; }

.toc ol { margin: 0; padding-left: 20px; }
.toc li { padding: 2px 0; }
.toc a { text-decoration: none; }
.toc a:hover { color: var(--accent-text); text-decoration: underline; }

.subsection { padding-top: 40px; scroll-margin-top: 16px; }

.subsection h2 { font-size: 23px; line-height: 1.3; margin: 0 0 14px; letter-spacing: -.01em; }

.placeholder {
  padding: 18px 20px;
  border: 1.5px dashed var(--border);
  border-radius: 12px;
  color: var(--muted);
  font-size: 15px;
}

.placeholder strong { display: block; color: var(--text); font-size: 13px; font-weight: 600; margin-bottom: 4px; }

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.pager a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  background: var(--surface);
}

.pager a:hover { border-color: var(--accent); }
.pager .next { text-align: right; grid-column: 2; }
.pager small { display: block; font-size: 12.5px; color: var(--muted); }
.pager span { font-weight: 600; }

/* ---------- Наповнений матеріал ---------- */

.subsection p { margin: 0 0 14px; }
.subsection h3 { font-size: 17.5px; margin: 28px 0 10px; }
.subsection ul, .subsection ol { margin: 0 0 16px; padding-left: 22px; }
.subsection li { margin: 4px 0; }
.subsection a { color: var(--accent-text); }

code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: .88em;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--hover);
}

kbd {
  font: 600 12.5px/1 ui-monospace, Consolas, monospace;
  padding: 3px 7px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--surface);
}

.table-wrap { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 14px; border-bottom: 1px solid var(--border); }
th { font-size: 13px; font-weight: 600; color: var(--muted); background: var(--sidebar); }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 500; }

td small { color: var(--muted); font-size: 13px; }
tr.hl td { background: var(--accent-soft); }
.subsection p.note { font-size: 14px; color: var(--muted); }

.cards-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 0 0 18px; }

.picker { margin: 0 0 18px; padding: 18px 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.picker-q { font-weight: 600; margin-bottom: 12px; }
.picker-options { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 4px; }
.picker-options button {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}
.picker-options button:hover { border-color: var(--accent); }
.picker-options button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.picker-a { margin-top: 12px; padding: 12px 16px; border-radius: 10px; background: var(--accent-soft); font-size: 15px; }

/* Лайфхак: картка «Коли / Як / Приклад» */
.hack { margin: 0 0 14px; padding: 16px 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.subsection .hack h3 { margin: 0 0 12px; }
.hack dl { display: grid; grid-template-columns: 76px 1fr; gap: 10px 14px; margin: 0; }
.hack dt { padding-top: 3px; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-text); }
.hack dd { margin: 0; font-size: 15px; }
.hack dd ol, .hack dd ul { margin: 0 0 6px; padding-left: 20px; }
.hack dd li { margin: 0 0 4px; }
@media (max-width: 640px) { .hack dl { grid-template-columns: 1fr; gap: 2px; } .hack dd { margin-bottom: 10px; } .hack { padding: 14px 16px; } }

/* Схема п'ятигодинного вікна */
.lsim { margin: 0 0 18px; padding: 18px 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.lsim-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 10px; }
.lsim-when { font-size: 16px; }
.lsim-count { font-size: 13px; color: var(--muted); }
.lsim-line { position: relative; height: 92px; margin: 0 6px 14px; }
.lsim-axis { position: absolute; left: 0; right: 0; top: 64px; height: 2px; background: var(--border); }
.lsim-tick { position: absolute; top: 72px; transform: translateX(-50%); font-size: 12px; color: var(--muted); }
.lsim-tick::before { content: ""; position: absolute; left: 50%; top: -9px; width: 1px; height: 6px; background: var(--border); }
.lsim-band {
  position: absolute;
  top: 14px;
  height: 50px;
  border-radius: 8px 8px 0 0;
  background: var(--accent-soft);
  border-bottom: 3px solid var(--accent);
  transition: left .45s ease, width .45s ease, opacity .3s;
}
.lsim-band span { position: absolute; left: 8px; top: 6px; font-size: 12px; font-weight: 600; color: var(--accent-text); white-space: nowrap; }
.lsim-band.past { background: var(--hover); border-bottom-color: var(--border); }
.lsim-band.past span { color: var(--muted); font-weight: 500; }
.lsim-reqs i { position: absolute; top: 59px; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; background: var(--surface); border: 3px solid var(--accent); }
.lsim-now { position: absolute; top: 38px; height: 32px; width: 2px; margin-left: -1px; background: var(--text); transition: left .45s ease; }
.lsim-now::before { content: ""; position: absolute; left: -5px; top: -2px; border: 6px solid transparent; border-top-color: var(--text); }
.lsim-meters { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 18px; margin-bottom: 14px; }
.lsim-meter { display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; font-size: 14px; }
.lsim-meter span { color: var(--muted); }
.lsim-meter b { font-size: 14px; }
.lsim-bar { grid-column: 1 / -1; height: 8px; border-radius: 4px; background: var(--hover); overflow: hidden; }
.lsim-bar i { display: block; height: 100%; border-radius: 4px; background: var(--accent); transition: width .45s ease; }
.lsim-meter.full b { color: var(--accent-text); }
.lsim-meter.full .lsim-bar i { background: var(--accent-text); }
.lsim-text { min-height: 72px; padding: 12px 16px; border-radius: 10px; background: var(--accent-soft); font-size: 15px; }
.lsim-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 14px; }
.lsim-nav > button { padding: 8px 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.lsim-nav > button:hover:not(:disabled) { border-color: var(--accent); }
.lsim-nav > button:disabled { opacity: .4; cursor: default; }
.lsim-nav .lsim-next:not(:disabled) { background: var(--accent); border-color: var(--accent); color: #fff; }
.lsim-dots { display: flex; gap: 6px; }
.lsim-dots button { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: var(--border); cursor: pointer; }
.lsim-dots button[aria-current="true"] { background: var(--accent); }
@media (max-width: 640px) {
  .lsim { padding: 16px; }
  .lsim-meters { grid-template-columns: 1fr; }
  .lsim-tick { font-size: 10.5px; }
  .lsim-band span { font-size: 10.5px; left: 4px; }
}

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 0 0 18px; }
.mini-card { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); font-size: 14.5px; }
.mini-card b { font-size: 15.5px; }
.mini-card span { color: var(--muted); }
.mini-card.accent { border-color: var(--accent); background: var(--accent-soft); }
.mini-card.accent span { color: var(--text); }

.subsection ul.examples { list-style: none; padding: 0; }
.examples li { padding: 10px 14px; margin: 0 0 8px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 10px 10px 0; }

.callout {
  margin: 18px 0;
  padding: 14px 18px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--muted);
  font-size: 15px;
}

.callout > b:first-child { display: block; margin-bottom: 4px; }
.callout.tip { background: var(--ok-soft); border-color: transparent; border-left-color: var(--ok); }
.callout.warn { background: var(--accent-soft); border-color: transparent; border-left-color: var(--accent); }

.subsection ul.checks { list-style: none; padding: 0; }
.checks li { position: relative; padding-left: 28px; margin: 8px 0; }
.checks li::before { content: "✓"; position: absolute; left: 4px; top: 0; font-weight: 700; color: var(--ok); }

.subsection ol.steps { list-style: none; padding: 0; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding: 0 0 18px 46px; margin: 0; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}
.steps li:not(:last-child)::after { content: ""; position: absolute; left: 14.5px; top: 34px; bottom: 4px; width: 1px; background: var(--border); }
.steps li > b { display: block; line-height: 30px; }
.steps li > span { display: block; color: var(--muted); }

.os-tabs { margin: 0 0 18px; padding: 18px 20px 4px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.os-switch { display: inline-flex; gap: 4px; padding: 4px; margin-bottom: 18px; border-radius: 10px; background: var(--hover); }
.os-switch button { border: 0; padding: 6px 16px; border-radius: 7px; background: transparent; color: var(--muted); font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.os-switch button[aria-selected="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, .12); }

.prompts { display: grid; gap: 8px; margin: 0 0 18px; }
.prompt { padding: 12px 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); font-size: 15px; }
.prompt::before { content: "Запит"; display: block; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-text); margin-bottom: 2px; }

.subsection ul.checklist { list-style: none; padding: 0; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.checklist li { margin: 0; border-bottom: 1px solid var(--border); }
.checklist li:last-child { border-bottom: 0; }
.checklist label { display: flex; align-items: center; gap: 12px; padding: 11px 16px; cursor: pointer; }
.checklist input { width: 18px; height: 18px; accent-color: var(--ok); flex: none; }
.checklist label:has(input:checked) { color: var(--muted); text-decoration: line-through; }

.sources { margin-top: 48px; padding: 16px 20px; border: 1px solid var(--border); border-radius: 12px; font-size: 14px; }
.sources ul { margin: 0; padding-left: 18px; }
.sources a { color: var(--muted); }
.sources a:hover { color: var(--accent-text); }

/* ---------- Схема вікна з номерами ---------- */

.screen-map { margin: 0 0 18px; padding: 18px; overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; background: var(--sidebar); }
.sm-window {
  display: grid;
  grid-template-columns: 172px 1fr 150px;
  min-width: 660px;
  height: 340px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  font-size: 11.5px;
  line-height: 1.35;
  color: var(--muted);
  box-shadow: var(--shadow);
}
.sm-side { display: flex; flex-direction: column; gap: 8px; padding: 8px; background: var(--bg); border-right: 1px solid var(--border); border-radius: 10px 0 0 10px; }
.sm-main { display: flex; flex-direction: column; gap: 10px; padding: 8px 14px 12px; min-width: 0; }
.sm-pane { display: flex; flex-direction: column; gap: 6px; margin: 8px; padding: 8px; }

.sm-zone { position: relative; border-radius: 7px; outline: 1.5px dashed var(--accent); outline-offset: 1px; }
.pin {
  position: absolute;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  box-shadow: 0 0 0 2px var(--surface);
}

.sm-row { display: flex; align-items: center; gap: 4px; padding: 3px; }
.sm-stack { display: flex; flex-direction: column; gap: 2px; padding: 4px 6px; }
.sm-grow { flex: 1; }
.sm-ico { display: inline-grid; place-items: center; min-width: 18px; height: 18px; padding: 0 2px; border-radius: 4px; font-size: 11px; color: var(--text); }
.sm-switch { display: inline-flex; margin-left: auto; padding: 2px; border-radius: 6px; background: var(--hover); }
.sm-switch span { padding: 0 5px; border-radius: 4px; font-size: 10.5px; }
.sm-switch .on { background: var(--surface); color: var(--text); font-weight: 600; }
.sm-field { padding: 2px 6px; margin-bottom: 2px; border: 1px solid var(--border); border-radius: 5px; background: var(--surface); }
.sm-strong { color: var(--text); font-weight: 600; }
.sm-cap { margin-top: 4px; font-size: 10.5px; }
.sm-sel { margin: 0 -4px; padding: 1px 4px; border-radius: 4px; background: var(--hover); color: var(--text); }
.sm-child { padding-left: 6px; }
.sm-account { margin-top: auto; color: var(--text); }
.sm-avatar { display: inline-grid; place-items: center; width: 16px; height: 16px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-text); font-size: 9.5px; font-weight: 700; }

.sm-bar { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.sm-title { padding: 2px 6px; color: var(--text); font-weight: 500; }
.sm-icons { display: inline-flex; gap: 2px; padding: 2px; }
.sm-chat { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px; padding: 10px; }
.sm-msg { max-width: 82%; padding: 6px 9px; border-radius: 8px; background: var(--bg); color: var(--text); }
.sm-msg.me { align-self: flex-end; background: var(--hover); }
.sm-msg code { font-size: 10px; padding: 0 4px; }
.sm-prompt { padding: 0; outline-offset: 3px; }
.sm-box { display: flex; align-items: center; gap: 6px; padding: 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.sm-ph { flex: 1; }
.sm-chips { display: flex; align-items: center; gap: 10px; padding: 5px 4px 0; font-size: 10.5px; }
.sm-sp { flex: 1; }
.sm-ring { width: 11px; height: 11px; border-radius: 50%; border: 2px solid var(--border); border-top-color: var(--accent); }
.sm-card { padding: 4px 6px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); }

/* ---------- Приклад Markdown: запис і вигляд ---------- */

.md-demo { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0 0 18px; }
.md-demo > div { padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); min-width: 0; }
.md-label { margin-bottom: 8px; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-text); }
.md-demo pre { margin: 0; white-space: pre-wrap; font: 13.5px/1.55 ui-monospace, "Cascadia Code", Consolas, monospace; color: var(--text); }
.md-render { font-size: 15px; }
.md-render .md-h1 { margin: 0 0 6px; font-size: 19px; }
.md-render .md-h2 { margin: 0 0 6px; font-size: 16px; }
.subsection .md-render ul, .subsection .md-render ol { margin: 0 0 8px; }

@media (max-width: 900px) { .md-demo { grid-template-columns: 1fr; } }

/* ---------- Часті питання ---------- */

.faq { display: grid; gap: 8px; margin: 0 0 18px; }
.faq details { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.faq summary { position: relative; padding: 13px 44px 13px 16px; font-weight: 600; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 16px; top: 50%; transform: translateY(-50%); font-size: 20px; font-weight: 400; color: var(--accent-text); }
.faq details[open] summary::after { content: "−"; }
.faq summary:hover { color: var(--accent-text); }
.subsection .faq p { margin: 0; padding: 0 16px 14px; color: var(--muted); }

.glossary td:first-child { white-space: nowrap; }
@media (max-width: 520px) { .glossary td:first-child { white-space: normal; } }

/* ---------- Головна ---------- */

.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 28px 0 44px; }

.mode {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.mode h3 { margin: 0 0 4px; font-size: 16px; }
.mode p { margin: 0; color: var(--muted); font-size: 14.5px; }

.h2-home { font-size: 20px; margin: 0 0 14px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }

.card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: border-color .15s, transform .15s;
}

.card:hover { border-color: var(--accent); transform: translateY(-1px); }

.card-head { display: flex; align-items: center; gap: 10px; }
.card-head .nav-num { background: var(--accent-soft); border-color: transparent; color: var(--accent-text); }
.card h3 { margin: 0; font-size: 16px; line-height: 1.3; }
.card p { margin: 0; font-size: 14px; color: var(--muted); flex: 1; }
.card-meta { font-size: 12.5px; color: var(--muted); }

/* ---------- Мобільна версія ---------- */

.backdrop { display: none; }

@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    left: 0;
    z-index: 30;
    transform: translateX(-100%);
    transition: transform .2s ease;
  }

  body.menu-open .sidebar { transform: none; }

  body.menu-open .backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 20;
    background: rgba(0, 0, 0, .35);
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .menu-btn {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
  }

  .topbar-title { font-weight: 600; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

  .main { padding: 28px 16px 64px; }

  .subsection { scroll-margin-top: 68px; }

  h1 { font-size: 27px; }
  .lead { font-size: 16.5px; }
  .modes { grid-template-columns: 1fr; }
  .cards-3, .cards-2 { grid-template-columns: 1fr; }
  .os-tabs { padding: 14px 14px 2px; }
}

@media (max-width: 520px) {
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}