:root {
  color-scheme: light;
  --bg: #f7f1e8;
  --bg-strong: #efe5d8;
  --surface: #fffdf9;
  --surface-soft: #f4ece1;
  --surface-raised: #ffffff;
  --text: #25211f;
  --muted: #746b64;
  --line: #dfd3c5;
  --line-strong: #c9b9a8;
  --accent: #a9472b;
  --accent-strong: #84351f;
  --accent-soft: #f2d8cc;
  --accent-ink: #6d2b1b;
  --green: #2f7355;
  --green-soft: #dceee4;
  --red: #b5413c;
  --red-soft: #f6ddda;
  --amber: #9a641a;
  --amber-soft: #f6e7c9;
  --shadow: 0 14px 40px rgba(69, 45, 31, .10);
  --shadow-soft: 0 6px 20px rgba(69, 45, 31, .07);
  --e-1: var(--shadow-soft);
  --e-2: var(--shadow);
  --e-3: 0 20px 58px rgba(69, 45, 31, .18);
  --radius-xl: 28px;
  --radius-lg: 21px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #181513;
  --bg-strong: #211c19;
  --surface: #24201d;
  --surface-soft: #2d2723;
  --surface-raised: #302a26;
  --text: #f8f0e7;
  --muted: #b9ada4;
  --line: #463d37;
  --line-strong: #5c5048;
  --accent: #e87958;
  --accent-strong: #f39172;
  --accent-soft: #512c22;
  --accent-ink: #ffb39b;
  --green: #77c49c;
  --green-soft: #203d30;
  --red: #f08a82;
  --red-soft: #4a2726;
  --amber: #e7b45d;
  --amber-soft: #48391f;
  --shadow: 0 18px 48px rgba(0, 0, 0, .28);
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, .18);
}

* { box-sizing: border-box; }

html {
  min-height: 100%;
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(circle at 93% 3%, color-mix(in srgb, var(--accent-soft) 65%, transparent) 0 12rem, transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; }
button { color: inherit; }
a { color: var(--accent); }
[hidden] { display: none !important; }
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.boot-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  padding: 28px;
  background: var(--bg);
  transition: opacity .22s ease, visibility .22s ease;
}

.boot-screen--done { opacity: 0; visibility: hidden; }
.boot-title { font-size: 20px; font-weight: 800; letter-spacing: -.02em; }
.boot-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

.boot-delayed {
  display: grid;
  gap: 7px;
  max-width: 320px;
  margin-top: 12px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.boot-delayed strong { color: var(--text); font-size: 16px; }
@keyframes spin { to { transform: rotate(360deg); } }

.app-shell {
  width: min(100%, 1100px);
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding: calc(68px + var(--safe-top)) 18px calc(88px + var(--safe-bottom));
}
.app-shell--session { padding-top: calc(14px + var(--safe-top)); padding-bottom: calc(24px + var(--safe-bottom)); }

.topbar {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 50%;
  width: min(100%, 1100px);
  height: calc(68px + var(--safe-top));
  padding: var(--safe-top) 18px 0;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--accent);
  box-shadow: var(--e-1);
  color: #fff;
  font-family: Georgia, serif;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -.08em;
}

.brand-mark::before {
  content: "";
  position: absolute;
  width: 29px;
  height: 29px;
  right: -9px;
  top: -10px;
  border: 1px solid rgba(255, 255, 255, .55);
  border-radius: 50%;
}
.brand-mark span { position: relative; transform: translateX(-1px); }
.brand-mark--boot { width: 62px; height: 62px; border-radius: var(--radius-lg); font-size: 22px; }
.brand-copy { display: grid; line-height: 1.05; }
.brand-copy b { font-size: 17px; letter-spacing: -.02em; }
.brand-copy small { margin-top: 3px; color: var(--muted); font-size: 11px; letter-spacing: .02em; }

.icon-button {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--e-1);
  cursor: pointer;
}
.icon-button:active { transform: scale(.96); }
.theme-icon { display: grid; place-items: center; }

/* Базовый вид всех векторных иконок. Обводка вместо заливки и currentColor —
   чтобы иконка сама подхватывала цвет текста и одинаково читалась в светлой и
   тёмной теме. До этого иконки были типографскими символами («⌕», «☼», «⌂»),
   которых нет в части системных шрифтов: у пользователя вместо лупы
   отрисовывалась крошечная закорючка или пустое место, и он просто не находил
   поиск. Ошибки при этом нигде не видно. */
.icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nav-icon { width: 22px; height: 22px; }
/* Шеврон раскрывающегося раздела показывает состояние: закрыто — вниз,
   открыто — вверх. Без поворота человек не понимает, свернётся ли блок. */
.disclosure-chevron { color: var(--accent); transition: transform .15s ease; }
details[open] > summary .disclosure-chevron { transform: rotate(180deg); }

#mainView { outline: none; }
.view { min-width: 0; }
@keyframes view-in { from { opacity: 0; transform: translateY(5px); } }

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
/* Типографика продукта, а не лендинга. 42 пункта на заголовке экрана — это
   рекламный размер: на телефоне такой заголовок занимает треть первого экрана и
   вытесняет то, ради чего человек пришёл. */
h1 { margin-bottom: 8px; font-size: clamp(25px, 6.4vw, 33px); line-height: 1.12; letter-spacing: -.035em; }
h2 { margin-bottom: 8px; font-size: clamp(20px, 4.6vw, 25px); line-height: 1.18; letter-spacing: -.025em; }
h3 { margin-bottom: 6px; font-size: 17px; letter-spacing: -.015em; }
.lead { max-width: 680px; margin-bottom: 0; color: var(--muted); font-size: 15px; }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 210px;
  padding: 26px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--accent-strong), var(--accent) 62%, #d47a4d);
  box-shadow: var(--e-2);
  color: #fff;
}
.hero::after {
  content: "";
  position: absolute;
  width: 250px;
  height: 250px;
  right: -105px;
  bottom: -132px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 50%;
  box-shadow: var(--e-1);
}
.hero > * { position: relative; z-index: 1; }
.hero .eyebrow { color: rgba(255, 255, 255, .78); }
.hero h1 { max-width: 690px; }
.hero p { max-width: 590px; color: rgba(255, 255, 255, .82); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: #fff;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
  touch-action: manipulation;
}
.button:hover { background: var(--accent-strong); }
.button:active { transform: translateY(1px) scale(.99); }
.button:disabled { opacity: .48; cursor: not-allowed; }
.button--hero { background: #fff; color: #662914; box-shadow: var(--e-1); }
.button--hero:hover { background: #fff7f2; }
.button--hero { display: grid; justify-items: start; gap: 1px; text-align: left; }
.button--hero small { color: color-mix(in srgb, #662914 70%, transparent); font-size: 10px; font-weight: 700; }
.button--ghost { border-color: var(--line); background: var(--surface); color: var(--text); }
.button--ghost:hover { background: var(--surface-soft); }
.button--soft { background: var(--accent-soft); color: var(--accent-ink); }
.button--soft:hover { background: color-mix(in srgb, var(--accent-soft) 85%, var(--accent)); }
.button--wide { width: 100%; }

.dashboard-grid {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

/* Верх главной. Раньше здесь стоял градиентный баннер во весь экран с
   заголовком в 40 пунктов, объяснением механики приложения и кнопкой-плитой, а
   под ним ещё две крупные карточки: цель дня и статистика. Экран читался как
   витрина, а не как рабочее место, и до первого задания нужно было проскроллить
   половину. Теперь это одна спокойная карточка: короткий заголовок, кольцо цели
   рядом с ним, обычные кнопки и статистика строкой. */
.today {
  padding: 18px 18px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--e-1);
}
.today-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.today-copy { min-width: 0; }
/* Заголовок делит строку с кольцом цели, поэтому размер плавающий: на узком
   экране фиксированные 25px уводили бы его в три строки. */
.today-copy h1 { margin: 2px 0 0; font-size: clamp(21px, 5.6vw, 25px); line-height: 1.2; }
.today-note { margin: 7px 0 0; color: var(--muted); font-size: 14px; }
.today-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 16px; }
.today-actions .button { flex: 1 1 auto; }
.today-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 15px 0 0;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}
.today-stats div { display: flex; flex-direction: column-reverse; gap: 2px; text-align: center; }
.today-empty {
  margin: 15px 0 0;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.today-stats dt { color: var(--muted); font-size: 11px; }
.today-stats dd { margin: 0; font-size: 19px; font-weight: 800; line-height: 1.1; }
.goal-ring--sm { width: 58px; height: 58px; }
.goal-ring--sm::before { inset: 6px; }
.goal-ring--sm strong { font-size: 14px; }

.card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  box-shadow: var(--e-1);
}
.card--flat { box-shadow: none; }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 15px; }
.card-head p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.card-kicker { color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }

/* .daily-card и .daily-copy удалены вместе с отдельной карточкой цели дня:
   кольцо переехало в шапку главной (.today-top), а описание «день считается по
   московскому времени» ушло — это правило, а не новость, и повторять его на
   главной каждый день незачем. */
.goal-ring {
  --goal: 0deg;
  position: relative;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) var(--goal), var(--surface-soft) 0);
}
.goal-ring::before { content: ""; position: absolute; inset: 7px; border-radius: 50%; background: var(--surface); }
.goal-ring strong { position: relative; font-size: 19px; }

.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.mini-stat { padding: 13px 10px; border-radius: var(--radius-md); background: var(--surface-soft); text-align: center; }
.mini-stat strong { display: block; font-size: 20px; line-height: 1.1; }
.mini-stat span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }

.section { margin-top: 28px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 13px; }
.section-head h2, .section-head h3 { margin-bottom: 0; }
.section-head button { min-height: 44px; padding: 8px 4px; border: 0; background: transparent; color: var(--accent); font-weight: 700; cursor: pointer; }

.home-disclosure { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--e-1); }
.home-disclosure > summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 76px; padding: 15px 17px; cursor: pointer; list-style: none; }
.home-disclosure > summary::-webkit-details-marker { display: none; }
.home-disclosure > summary > span:first-child { display: grid; gap: 3px; }
.home-disclosure > summary b { font-size: 16px; }
.home-disclosure > summary small { color: var(--muted); font-size: 12px; }
.home-disclosure > summary > span:last-child { color: var(--accent); font-size: 22px; transition: transform .15s ease; }
.home-disclosure[open] > summary > span:last-child { transform: rotate(180deg); }
.home-disclosure-content { padding: 0 14px 15px; }
.home-disclosure .format-grid { margin-top: 0; }
.home-reinforce { margin-top: 20px; }

.format-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.format-card {
  min-height: 116px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-align: left;
  cursor: pointer;
  box-shadow: var(--e-1);
  touch-action: manipulation;
}
.format-card:first-child { grid-column: 1 / -1; }
.format-card:hover { border-color: var(--accent); }
.format-card:active { transform: scale(.99); }
.format-card .format-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 13px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 850;
}
.format-card b { display: block; font-size: 15px; line-height: 1.18; }
.format-card small { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; }

.task13-intensive-section .section-head { margin-bottom: 5px; }
.task13-intensive-section .eyebrow { margin-bottom: 5px; }
.lab-launch-grid { display: grid; gap: 10px; margin-top: 14px; }
.lab-launch-card {
  display: grid;
  gap: 8px;
  width: 100%;
  min-height: 172px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--e-1);
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
}
.lab-launch-card:hover { border-color: var(--accent); }
.lab-launch-card:active { transform: scale(.99); }
.lab-launch-card b { font-size: 17px; line-height: 1.2; }
.lab-launch-card > small { color: var(--muted); font-size: 12px; line-height: 1.4; }
.lab-launch-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.lab-launch-top .format-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 850;
}
.lab-launch-progress { display: grid; gap: 6px; margin-top: auto; }
.lab-launch-progress > span { height: 6px; overflow: hidden; border-radius: var(--radius-sm); background: var(--surface-soft); }
.lab-launch-progress i { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.lab-launch-progress em { color: var(--muted); font-size: 11px; font-style: normal; font-weight: 700; }

.quick-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.quick-card {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 80px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-align: left;
  cursor: pointer;
}
.quick-card strong { display: block; font-size: 15px; }
.quick-card small { color: var(--muted); }
.quick-dot { width: 10px; height: 10px; flex: 0 0 auto; border-radius: 50%; background: var(--amber); outline: 6px solid var(--amber-soft); }
.quick-dot--red { background: var(--red); outline-color: var(--red-soft); }

.bottom-nav {
  position: fixed;
  z-index: 60;
  bottom: 0;
  left: 50%;
  width: min(100%, 520px);
  height: calc(68px + var(--safe-bottom));
  padding: 7px 12px var(--safe-bottom);
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-bottom: 0;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--e-2);
  backdrop-filter: blur(18px);
}
.bottom-nav button {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 2px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.bottom-nav button span { font-size: 21px; line-height: 1; }
.bottom-nav button small { font-size: 11px; font-weight: 700; }
.bottom-nav button[aria-current="page"] { background: var(--accent-soft); color: var(--accent-ink); }

.page-head { margin: 12px 0 20px; }
.page-head h1 { font-size: clamp(25px, 6.4vw, 33px); }
.filter-toolbar { display: flex; gap: 9px; margin: 16px 0; overflow-x: auto; scrollbar-width: none; }
.filter-toolbar::-webkit-scrollbar { display: none; }
.chip {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.chip[aria-pressed="true"], .chip--active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-ink); }

.search-field { position: relative; margin-bottom: 14px; }
.search-field input {
  width: 100%;
  height: 48px;
  padding: 0 16px 0 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  outline: 0;
  background: var(--surface);
  color: var(--text);
}
.search-field input:focus { border-color: var(--accent); outline: 3px solid color-mix(in srgb, var(--accent) 15%, transparent); }
.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.search-field input:focus + .sr-only ~ .search-icon,
.search-field input:focus ~ .search-icon { color: var(--accent); }

.topic-groups { display: grid; gap: 10px; }
.topic-group { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: var(--e-1); }
.topic-group > summary { display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 11px; min-height: 70px; padding: 13px 14px; cursor: pointer; list-style: none; }
.topic-group > summary::-webkit-details-marker { display: none; }
.topic-group > summary > span:nth-child(2) { display: grid; gap: 2px; }
.topic-group > summary b { font-size: 15px; }
.topic-group > summary small { color: var(--muted); font-size: 11px; }
.topic-group > summary i { display: grid; place-items: center; color: var(--accent); font-style: normal; transition: transform .15s ease; }
.topic-group[open] > summary i { transform: rotate(180deg); }
.topic-group-number { display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-sm); background: var(--accent-soft); color: var(--accent-ink); font-weight: 850; }
.topic-group .topic-list { padding: 0 9px 9px; }
.topic-list { display: grid; gap: 8px; }
.topic-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 70px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-align: left;
  cursor: pointer;
}
.topic-card:hover { border-color: var(--line-strong); }
.topic-card[aria-pressed="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 45%, var(--surface)); }
.topic-code { display: grid; place-items: center; width: 42px; height: 42px; border-radius: var(--radius-sm); background: var(--surface-soft); color: var(--accent); font-size: 12px; font-weight: 850; }
.topic-copy { display: grid; min-width: 0; gap: 3px; }
.topic-copy b { font-size: 13px; line-height: 1.3; }
.topic-copy small { display: -webkit-box; overflow: hidden; color: var(--muted); font-size: 11px; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.topic-count { color: var(--muted); font-size: 12px; }
.topic-resume { display: flex; align-items: center; justify-content: space-between; gap: 14px; width: 100%; min-height: 70px; margin-bottom: 14px; padding: 13px 15px; border: 1px solid var(--accent); border-radius: var(--radius-lg); background: var(--accent-soft); color: var(--accent-ink); text-align: left; cursor: pointer; }
.topic-resume span { display: grid; gap: 2px; }
.topic-resume small { font-size: 10px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.topic-resume b { font-size: 13px; }
.topic-resume strong { flex: 0 0 auto; font-size: 12px; }
.selection-bar {
  position: sticky;
  z-index: 10;
  bottom: calc(72px + var(--safe-bottom));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 16px -4px 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--e-2);
  backdrop-filter: blur(16px);
}
.selection-bar span { padding-left: 4px; color: var(--muted); font-size: 12px; }
.selection-bar span b { color: var(--text); }
.selection-bar > div { display: flex; gap: 7px; }
.selection-bar .button { min-height: 44px; padding: 9px 13px; }

.stats-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.stat-card { min-height: 128px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--e-1); }
.stat-card:first-child { grid-column: 1 / -1; min-height: 154px; background: linear-gradient(145deg, var(--accent-soft), var(--surface)); }
.stat-value { display: block; margin-top: 20px; font-size: 36px; font-weight: 850; line-height: 1; letter-spacing: -.04em; }
.stat-label { color: var(--muted); font-size: 12px; }
.stat-card small { display: block; margin-top: 10px; color: var(--muted); font-size: 11px; }
.stat-value--time { font-size: clamp(25px, 8vw, 36px); }
.stat-card:last-child { grid-column: 1 / -1; min-height: 108px; }
.score-method { display: flex; align-items: center; gap: 10px; margin-top: 12px; padding: 13px 15px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-soft); font-size: 12px; }
.score-method b { flex: 0 0 auto; color: var(--accent); }
.score-method span { color: var(--muted); }
.stats-section { margin-top: 28px; }
.stats-section > .section-head > span { color: var(--muted); font-size: 12px; }
.score-breakdown { display: grid; }
.score-row { padding: 15px 0; border-bottom: 1px solid var(--line); }
.score-row:last-child { border-bottom: 0; }
.score-row-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 9px; font-size: 13px; line-height: 1.35; }
.score-row-head span { font-weight: 720; }
.score-row-head strong { flex: 0 0 auto; color: var(--accent); font-size: 15px; }
.score-row-meta { display: flex; flex-wrap: wrap; gap: 5px 12px; margin-top: 8px; color: var(--muted); font-size: 10px; }
.stats-disclosure > summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 17px 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--e-1); cursor: pointer; list-style: none; }
.stats-disclosure > summary::-webkit-details-marker { display: none; }
.stats-disclosure > summary span { display: grid; gap: 3px; }
.stats-disclosure > summary b { font-size: 16px; }
.stats-disclosure > summary small, .stats-disclosure > summary i { color: var(--muted); font-size: 11px; font-style: normal; }
.stats-disclosure[open] > summary { margin-bottom: 10px; border-color: var(--line-strong); }
.stats-disclosure[open] > summary i { font-size: 0; }
.stats-disclosure[open] > summary i::after { content: 'Скрыть'; font-size: 11px; }
.mistake-browser { overflow: hidden; }
.stats-search { margin-bottom: 6px; }
.mistake-filter-count { margin: 0 0 8px; color: var(--muted); font-size: 10px; text-align: right; }
.mistake-list { display: grid; }
.mistake-item { border-top: 1px solid var(--line); }
.mistake-item[hidden] { display: none; }
.mistake-item > summary { display: grid; grid-template-columns: 30px minmax(0, 1fr) auto; align-items: center; gap: 10px; padding: 15px 0; cursor: pointer; list-style: none; }
.mistake-item > summary::-webkit-details-marker { display: none; }
.mistake-status { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--green-soft); color: var(--green); font-weight: 900; }
.mistake-item.is-pending .mistake-status { background: var(--red-soft); color: var(--red); }
.mistake-summary-copy { display: grid; min-width: 0; gap: 3px; }
.mistake-summary-copy b { font-size: 12px; }
.mistake-summary-copy small { overflow: hidden; color: var(--muted); font-size: 11px; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.mistake-summary-copy em { color: var(--muted); font-size: 9px; font-style: normal; text-transform: uppercase; letter-spacing: .04em; }
.mistake-score { color: var(--accent); font-size: 14px; }
.mistake-detail { padding: 5px 0 20px 40px; }
.mistake-detail .task-prompt { margin: 14px 0; font-size: 14px; }
.mistake-options { display: grid; gap: 6px; margin: 12px 0; padding-left: 28px; color: var(--text); font-size: 12px; line-height: 1.4; }
.mistake-targets { display: grid; gap: 7px; padding: 11px 12px; border-radius: var(--radius-sm); background: var(--surface-soft); font-size: 12px; }
.mistake-targets p { margin: 0; }
.mistake-image-wrap { margin: 12px 0; padding: 8px; border: 1px solid var(--line); border-radius: var(--radius-md); background: white; }
.mistake-image-wrap img { display: block; max-width: 100%; max-height: 360px; margin: auto; object-fit: contain; }
.mistake-answer-grid { display: grid; gap: 8px; margin: 14px 0; }
.mistake-answer-grid > div { display: grid; gap: 4px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface-soft); }
.mistake-answer-grid span, .mistake-answer-grid small { color: var(--muted); font-size: 10px; }
.mistake-answer-grid strong { font-size: 13px; }
.mistake-search-empty { padding-top: 20px; }
.breakdown { display: grid; gap: 12px; }
.breakdown-row { padding: 14px 0; border-bottom: 1px solid var(--line); }
.breakdown-row:last-child { border-bottom: 0; }
.breakdown-top { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 8px; font-size: 13px; }
.breakdown-top span:last-child { flex: 0 0 auto; color: var(--muted); }
.bar { height: 7px; overflow: hidden; border-radius: 999px; background: var(--surface-soft); }
.bar span { display: block; height: 100%; border-radius: inherit; background: var(--accent); }

.sheet-backdrop {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-top: 60px;
  background: rgba(20, 15, 12, .48);
  backdrop-filter: blur(4px);
  animation: fade-in .16s ease both;
}
@keyframes fade-in { from { opacity: 0; } }
.sheet {
  width: min(100%, 620px);
  max-height: calc(100dvh - 28px);
  overflow: auto;
  padding: 10px 18px calc(18px + var(--safe-bottom));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  background: var(--bg);
  box-shadow: var(--e-3);
  animation: sheet-in .22s ease both;
}
@keyframes sheet-in { from { transform: translateY(24px); } }
.sheet-handle { width: 42px; height: 4px; margin: 2px auto 18px; border-radius: var(--radius-sm); background: var(--line-strong); }
.sheet-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.sheet-head h2 { margin-bottom: 3px; }
.sheet-head p { margin: 0; color: var(--muted); font-size: 13px; }
.close-button { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); cursor: pointer; }
.field-group { margin-top: 22px; }
.field-label { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 10px; font-size: 13px; font-weight: 800; }
.field-label small { color: var(--muted); font-weight: 600; }
.choice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.choice-grid--three { grid-template-columns: repeat(3, 1fr); }
.choice-pill {
  min-height: 45px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.choice-pill[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-ink); }
.mode-list { display: grid; gap: 8px; }
.mode-option {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  align-items: center;
  gap: 11px;
  width: 100%;
  min-height: 58px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  text-align: left;
  cursor: pointer;
}
.mode-option[aria-pressed="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 52%, var(--surface)); }
.mode-glyph { display: grid; place-items: center; width: 32px; height: 32px; border-radius: var(--radius-sm); background: var(--surface-soft); color: var(--accent); font-weight: 850; }
.mode-copy b { display: block; font-size: 13px; }
.mode-copy small { display: block; color: var(--muted); font-size: 11px; }
.radio-dot { width: 18px; height: 18px; border: 2px solid var(--line-strong); border-radius: 50%; }
.mode-option[aria-pressed="true"] .radio-dot { border: 5px solid var(--accent); }
.sheet-footer { position: sticky; bottom: -1px; margin: 24px -18px -18px; padding: 14px 18px calc(18px + var(--safe-bottom)); border-top: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(14px); }
.available-note { margin: 0 0 9px; color: var(--muted); text-align: center; font-size: 12px; }

.session-shell { width: min(100%, 760px); margin: 0 auto; }
.session-head { display: grid; grid-template-columns: 42px 1fr 42px; align-items: center; gap: 12px; margin: 4px 0 18px; }
.session-head .icon-button { box-shadow: none; }
.session-progress { text-align: center; }
.session-progress strong { display: block; margin-bottom: 6px; font-size: 13px; }
.progress-track { height: 7px; overflow: hidden; border-radius: var(--radius-lg); background: var(--surface-soft); }
.progress-track span { display: block; height: 100%; border-radius: inherit; background: var(--accent); transition: width .2s ease; }
.session-spacer { width: 42px; }
.exam-submit-link { min-width: 52px; min-height: 42px; padding: 7px; border: 0; border-radius: var(--radius-sm); background: var(--accent-soft); color: var(--accent-ink); font-size: 12px; font-weight: 800; cursor: pointer; }
.exam-navigator { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 6px; margin: -4px 0 12px; }
.exam-number { min-width: 0; min-height: 38px; padding: 6px 2px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--muted); font-size: 11px; font-weight: 800; cursor: pointer; }
.exam-number.is-answered { border-color: color-mix(in srgb, var(--accent) 62%, var(--line)); background: var(--accent-soft); color: var(--accent-ink); }
.exam-number.is-current { outline: 2px solid var(--accent); outline-offset: 1px; }
.exam-number.is-full { border-color: var(--green); background: var(--green-soft); }
.exam-number.is-partial { border-color: var(--amber); background: var(--amber-soft); }
.exam-number.is-zero { border-color: var(--red); background: var(--red-soft); }
.exam-autosave { margin: 10px 0 0; color: var(--muted); font-size: 11px; text-align: center; }
.exam-submit-dialog { width: min(100%, 430px); padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--e-3); text-align: center; }
.exam-submit-dialog h2 { margin-bottom: 8px; }
.exam-submit-dialog > p:not(.eyebrow) { color: var(--muted); }
.exam-submit-dialog .summary-badge { width: 76px; height: 76px; margin-bottom: 15px; }
.task-card { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--e-2); }
.task-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-bottom: 17px; }
.tag { padding: 6px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font-size: 11px; font-weight: 800; }
.tag--muted { background: var(--surface-soft); color: var(--muted); }
.task-prompt { font-family: Georgia, "Times New Roman", serif; font-size: clamp(17px, 4.5vw, 20px); line-height: 1.55; }
.task-prompt p { margin-bottom: 13px; }
.task-image-wrap { margin: 18px 0; padding: 10px; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; }
.task-image { display: block; width: 100%; height: auto; max-height: 580px; object-fit: contain; border-radius: var(--radius-sm); }
.answer-list { display: grid; gap: 9px; margin-top: 20px; }
.answer-option {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: start;
  gap: 11px;
  width: 100%;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  text-align: left;
  cursor: pointer;
}
.answer-option:hover { border-color: var(--line-strong); }
.answer-option[aria-pressed="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 50%, var(--surface)); }
.answer-option.is-correct { border-color: var(--green); background: var(--green-soft); }
.answer-option.is-wrong { border-color: var(--red); background: var(--red-soft); }
.answer-option.is-missed { border-color: var(--green); border-style: dashed; }
.answer-number { display: grid; place-items: center; width: 31px; height: 31px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); font-size: 12px; font-weight: 850; }
.answer-text { padding-top: 4px; font-size: 14px; line-height: 1.42; white-space: pre-line; }
.task-actions { display: flex; gap: 10px; margin-top: 16px; }
.task-actions .button { flex: 1; }
.result-box { margin-top: 16px; padding: 15px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-soft); }
.result-box--success { border-color: var(--green); background: var(--green-soft); }
.result-box--error { border-color: var(--red); background: var(--red-soft); }
.result-box strong { display: block; margin-bottom: 4px; }
.result-box p { margin: 0; color: var(--muted); font-size: 13px; }

.lab-queue-count {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}
.lab-task-card { overflow: hidden; }
.lab-mastery-dots { display: flex; justify-content: center; gap: 9px; margin: 4px 0 20px; }
.lab-mastery-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--line); transition: background .18s ease, transform .18s ease; }
.lab-mastery-dot.is-earned { background: var(--green); transform: scale(1.08); }
.lab-mastery-dot.is-error { background: var(--red); animation: lab-error-dot .48s ease both; }
@keyframes lab-error-dot { 0%, 100% { transform: scale(1); } 45% { transform: scale(1.42); } }
.lab-prompt { display: grid; min-height: 116px; place-items: center; text-align: center; }
.lab-prompt p { margin: 0; }
.lab-answer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin-top: 20px; }
.lab-answer {
  display: grid;
  grid-template-columns: 29px 1fr;
  align-items: center;
  gap: 9px;
  min-height: 70px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
}
.lab-answer:hover { border-color: var(--line-strong); }
.lab-answer:disabled { opacity: 1; cursor: default; }
.lab-answer.is-correct { border-color: var(--green); background: var(--green-soft); }
.lab-answer.is-wrong { border-color: var(--red); background: var(--red-soft); }
.lab-answer.is-revealed { border-style: dashed; }
.lab-answer-number { display: grid; place-items: center; width: 28px; height: 28px; border-radius: var(--radius-sm); background: var(--surface-soft); color: var(--muted); font-size: 11px; font-weight: 850; }
.lab-answer b { display: block; font-size: 12px; line-height: 1.25; }
.lab-answer small { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; font-weight: 700; }
.lab-result { animation: view-in .18s ease both; }
.lab-rule { margin: 16px 2px 0; color: var(--muted); font-size: 11px; text-align: center; }
.lab-summary .task-actions { margin-top: 22px; }

.summary { padding: 30px 22px; text-align: center; }
.summary-badge { display: grid; place-items: center; width: 92px; height: 92px; margin: 0 auto 20px; border-radius: var(--radius-xl); background: var(--accent-soft); color: var(--accent); font-size: 34px; font-weight: 850; transform: rotate(-4deg); }
.summary h1 { font-size: 32px; }
.summary p { color: var(--muted); }
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 23px 0; }
.summary-grid div { padding: 13px 6px; border-radius: 14px; background: var(--surface-soft); }
.summary-grid strong { display: block; font-size: 20px; }
.summary-grid small { color: var(--muted); }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.exam-launch {
  display: grid;
  grid-template-columns: 54px 1fr auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  margin-top: 16px;
  padding: 17px;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--line));
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent-soft) 58%, var(--surface)), var(--surface));
  box-shadow: var(--e-1);
  text-align: left;
  cursor: pointer;
}
.exam-launch:hover { border-color: var(--accent); }
.exam-launch:active { transform: scale(.995); }
.exam-launch-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 900;
}
.exam-launch-copy { display: grid; min-width: 0; }
.exam-launch-copy small { color: var(--accent); font-size: 11px; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.exam-launch-copy strong { margin-top: 3px; font-size: 16px; line-height: 1.25; }
.exam-launch-copy em { margin-top: 4px; color: var(--muted); font-size: 11px; font-style: normal; }
.exam-launch-arrow { display: grid; place-items: center; color: var(--accent); }
.exam-launch-arrow .icon { width: 22px; height: 22px; }

.block-launch-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.block-launch-card {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 2px 10px;
  min-height: 84px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--e-1);
  text-align: left;
  cursor: pointer;
}
.block-launch-card:hover { border-color: var(--accent); }
.block-launch-card > span { grid-row: 1 / 3; display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-sm); background: var(--accent-soft); color: var(--accent-ink); font-size: 12px; font-weight: 850; }
.block-launch-card b { font-size: 12px; line-height: 1.2; }
.block-launch-card small { color: var(--muted); font-size: 10px; }
.topic-count { display: inline-flex; align-items: center; gap: 6px; }
.topic-count i { color: var(--accent); font-size: 17px; font-style: normal; }

.sheet-backdrop--steady, .sheet-backdrop--steady .sheet { animation: none; }
.setting-switch {
  display: grid;
  grid-template-columns: 40px 1fr 46px;
  align-items: center;
  gap: 11px;
  width: 100%;
  min-height: 72px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-align: left;
  cursor: pointer;
}
.setting-switch-icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-sm); background: var(--surface-soft); color: var(--accent); font-size: 22px; }
.setting-switch b { display: block; font-size: 13px; }
.setting-switch small { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; line-height: 1.3; }
.setting-switch > i { position: relative; width: 44px; height: 26px; border-radius: 999px; background: var(--line-strong); transition: background .15s ease; }
.setting-switch > i em { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 2px 7px rgba(0,0,0,.18); transition: transform .15s ease; }
.setting-switch[aria-pressed="true"] > i { background: var(--accent); }
.setting-switch[aria-pressed="true"] > i em { transform: translateX(18px); }
.setting-note { margin: 8px 4px 0; color: var(--muted); font-size: 11px; }
.advanced-settings { margin-top: 22px; border: 1px solid var(--line); border-radius: var(--radius-md); background: color-mix(in srgb, var(--surface) 72%, transparent); }
.advanced-settings summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 62px; padding: 12px 14px; cursor: pointer; list-style: none; }
.advanced-settings summary::-webkit-details-marker { display: none; }
.advanced-settings summary span:first-child { display: grid; }
.advanced-settings summary b { font-size: 13px; }
.advanced-settings summary small { color: var(--muted); font-size: 11px; }
.advanced-settings summary span:last-child { color: var(--accent); font-size: 20px; transition: transform .15s ease; }
.advanced-settings[open] summary span:last-child { transform: rotate(180deg); }
.advanced-settings > .field-group, .advanced-settings > .reset-filters { margin-left: 13px; margin-right: 13px; }
.advanced-settings > .field-group:first-of-type { margin-top: 4px; }
.reset-filters { width: calc(100% - 26px); margin-top: 17px; margin-bottom: 14px; padding: 10px; border: 0; background: transparent; color: var(--accent); font-size: 12px; font-weight: 750; cursor: pointer; }

.classification-sort { display: grid; gap: 12px; margin-top: 20px; }
.drag-help { display: flex; align-items: center; gap: 8px; margin: 0; color: var(--muted); font-size: 12px; }
.drag-help span { color: var(--accent); font-size: 19px; }
.sort-pool, .sort-column { min-width: 0; padding: 12px; border: 1px dashed var(--line-strong); border-radius: var(--radius-md); background: color-mix(in srgb, var(--surface-soft) 58%, var(--surface)); transition: border-color .12s ease, background .12s ease, transform .12s ease; }
.sort-pool > header, .sort-column > header { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 8px; min-height: 34px; margin-bottom: 9px; }
.sort-pool > header b { grid-column: 1 / 3; font-size: 12px; }
.sort-pool > header small { text-align: right; }
.sort-column > header > span { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--accent-soft); color: var(--accent-ink); font-size: 11px; font-weight: 850; }
.sort-column > header b { font-size: 12px; line-height: 1.25; }
.sort-column > header small, .sort-pool > header small { color: var(--muted); font-size: 10px; }
.sort-columns { position: sticky; z-index: 8; top: calc(6px + var(--safe-top)); order: 1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; align-items: start; padding: 6px; border-radius: var(--radius-md); background: color-mix(in srgb, var(--bg) 94%, transparent); box-shadow: 0 5px 16px rgba(69, 45, 31, .08); backdrop-filter: blur(12px); }
.sort-pool { order: 2; }
.sort-card-list { display: grid; gap: 8px; min-height: 48px; align-content: start; }
.sort-card {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: start;
  gap: 7px;
  width: 100%;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  box-shadow: var(--e-1);
  text-align: left;
  cursor: grab;
  touch-action: none;
}
.sort-card:active { cursor: grabbing; }
.sort-card-handle { color: var(--muted); font-size: 19px; line-height: 1; }
.sort-card b { color: var(--accent); }
.sort-card-copy { font-size: 12px; line-height: 1.35; }
.sort-card small { display: block; margin-top: 5px; color: var(--red); font-size: 10px; }
.sort-card.is-correct { border-color: var(--green); background: var(--green-soft); }
.sort-card.is-wrong { border-color: var(--red); background: var(--red-soft); }
.sort-card.is-dragging { opacity: .28; }
.sort-drop-zone.is-over { border-color: var(--accent); border-style: solid; background: color-mix(in srgb, var(--accent-soft) 55%, var(--surface)); transform: translateY(-2px); }
.sort-empty { display: grid; place-items: center; min-height: 46px; color: var(--muted); font-size: 10px; text-align: center; }
.sort-drag-ghost { position: fixed; z-index: 1000; pointer-events: none; opacity: .94; transform: rotate(1deg); box-shadow: var(--e-3); }

@media (max-width: 699px) {
  .sort-column { padding: 8px; }
  .sort-column > header { grid-template-columns: 26px 1fr auto; margin-bottom: 5px; }
  .sort-column > header > span { width: 26px; height: 26px; }
  .sort-column > header b { font-size: 11px; }
  .sort-column .sort-card-list { display: flex; flex-wrap: wrap; gap: 5px; min-height: 35px; }
  .sort-column .sort-card { display: inline-flex; width: auto; min-width: 34px; min-height: 34px; align-items: center; justify-content: center; padding: 6px 8px; }
  .sort-column .sort-card-handle, .sort-column .sort-card-text, .sort-column .sort-card small { display: none; }
  .sort-column .sort-card-copy { font-size: 0; }
  .sort-column .sort-card-copy b { font-size: 12px; }
  .sort-column .sort-empty { min-height: 33px; }
}

.lab-answer-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-sm); background: var(--surface-soft); font-size: 19px; line-height: 1; }
.lab-answer { grid-template-columns: 36px 1fr; }

.summary-badge--exam { display: flex; flex-direction: column; transform: rotate(-2deg); font-size: 30px; line-height: 1; }
.summary-badge--exam small { margin-top: 4px; font-size: 10px; }
.exam-result-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; margin: 20px 0 4px; }
.exam-result-item { display: grid; gap: 3px; padding: 8px 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-soft); color: var(--text); font-size: 10px; cursor: pointer; }
.exam-result-item b { font-size: 12px; }
.exam-result-item.is-full { border-color: var(--green); background: var(--green-soft); }
.exam-result-item.is-partial { border-color: var(--amber); background: var(--amber-soft); }
.exam-result-item.is-zero { border-color: var(--red); background: var(--red-soft); }

.empty-state { padding: 38px 20px; border: 1px dashed var(--line-strong); border-radius: var(--radius-lg); text-align: center; }
.empty-state .empty-icon { display: grid; place-items: center; width: 54px; height: 54px; margin: 0 auto 14px; border-radius: var(--radius-lg); background: var(--surface-soft); color: var(--accent); }
.empty-icon .icon { width: 26px; height: 26px; }
.empty-state p { max-width: 420px; margin: 0 auto 17px; color: var(--muted); }
.source-note { margin: 30px 4px 4px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.source-note a { font-weight: 700; }
.toast { position: fixed; z-index: 400; left: 50%; bottom: calc(85px + var(--safe-bottom)); width: max-content; max-width: calc(100% - 30px); padding: 11px 15px; transform: translateX(-50%); border-radius: var(--radius-sm); background: #25211f; box-shadow: var(--e-2); color: #fff; font-size: 13px; text-align: center; }
.noscript { position: fixed; inset: 0; z-index: 2000; display: grid; place-content: center; padding: 30px; background: #f7f1e8; color: #25211f; text-align: center; }

button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent); outline-offset: 2px; }

@media (min-width: 700px) {
  .app-shell { padding-left: 28px; padding-right: 28px; padding-bottom: 38px; }
  .topbar { padding-left: 28px; padding-right: 28px; }
  .bottom-nav { top: calc(84px + var(--safe-top)); bottom: auto; left: max(24px, calc(50% - 522px)); width: 154px; height: auto; padding: 8px; transform: none; grid-template-columns: 1fr; gap: 6px; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--e-1); }
  .bottom-nav button { grid-template-columns: 28px 1fr; justify-items: start; min-height: 48px; padding: 8px 12px; }
  .bottom-nav button span { font-size: 19px; }
  .bottom-nav button small { font-size: 12px; }
  #mainView { margin-left: 174px; }
  .app-shell--session #mainView { margin-left: 0; }
  .dashboard-grid { grid-template-columns: 1.1fr .9fr; }
  .block-launch-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .format-grid { grid-template-columns: repeat(5, 1fr); }
  .format-card:first-child { grid-column: auto; }
  .format-card { min-height: 152px; }
  .lab-launch-grid { grid-template-columns: 1fr 1fr; }
  .quick-row { grid-template-columns: 1fr 1fr; }
  .stats-hero { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .stat-card:first-child { grid-column: auto; }
  .stat-card:last-child { grid-column: auto; }
  .mistake-answer-grid { grid-template-columns: 1fr 1fr; }
  .choice-grid { grid-template-columns: repeat(3, 1fr); }
  .selection-bar { bottom: 18px; }
  .sheet { border-radius: var(--radius-xl); margin-bottom: 20px; }
  .sheet-backdrop { align-items: center; padding: 24px; }
  .sheet-footer { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
  .task-card { padding: 28px; }
  .classification-sort { grid-template-columns: minmax(220px, .8fr) minmax(0, 1.4fr); align-items: start; }
  .classification-sort .drag-help { grid-column: 1 / -1; }
  .classification-sort .sort-pool { grid-column: 1; order: 1; }
  .classification-sort .sort-columns { position: static; grid-column: 2; order: 2; padding: 0; background: transparent; box-shadow: none; backdrop-filter: none; }
  .toast { bottom: 28px; }
}

/* Домашнее задание и вход в класс. Раздел появляется только когда предмет
   подключён к серверу и у ученика действительно есть класс. */
.homework-card { display: flex; flex-direction: column; gap: 12px; }
.homework-card p { margin: 0; color: var(--muted); font-size: 14px; }
.goal-bar { height: 8px; border-radius: 999px; background: var(--surface-soft); overflow: hidden; }
.goal-bar span { display: block; height: 100%; border-radius: 999px; background: var(--accent); }
.join-row { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.join-input {
  flex: 1 1 160px;
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md, 12px);
  background: var(--surface-raised);
  color: inherit;
  font: inherit;
  /* Код диктуют вслух и переписывают с доски: разрядка и верхний регистр
     заметно снижают шанс ошибиться. */
  text-transform: uppercase;
  letter-spacing: .12em;
}
.join-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Кабинет учителя (teacher.html). Формы длинные, поэтому поля обычные — без
   разрядки, которая нужна только коду класса. */
.join-input--wide { flex: 1 1 220px; text-transform: none; letter-spacing: normal; }
.card--active { border-color: var(--accent); }
.join-code { font-size: 14px; color: var(--muted); }
.field { display: flex; flex-direction: column; gap: 6px; margin-top: 14px; font-size: 14px; }
.field > span { color: var(--muted); font-weight: 700; }
.field--short { flex: 1 1 130px; }
.field-note { margin: 14px 0 6px; color: var(--muted); font-size: 13px; }
/* Выбор типов и блоков в конструкторе ДЗ. Класс НЕ .chip: так называются
   фильтр-таблетки каталога тем, и второе определение молча меняло бы их вид
   на всех экранах. */
.pick-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pick-chip {
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.pick-chip--on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-ink); font-weight: 700; }
.switch-row { display: flex; align-items: center; gap: 10px; margin: 14px 0; font-size: 14px; }
/* Таблица результатов на телефоне не имеет права распирать страницу: прокрутка
   живёт внутри своего контейнера, а не у всего экрана. */
.table-scroll { overflow-x: auto; margin: 0 -4px; }
.results-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.results-table th, .results-table td { padding: 9px 8px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.results-table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }

@media (max-width: 370px) {
  .app-shell { padding-left: 13px; padding-right: 13px; }
  .topbar { padding-left: 13px; padding-right: 13px; }
  .hero { padding: 22px 19px; }
  .card { padding: 16px; }
  .format-grid, .quick-row { grid-template-columns: 1fr; }
  .format-card:first-child { grid-column: auto; }
  .choice-grid { grid-template-columns: 1fr; }
  .choice-grid--three { grid-template-columns: repeat(3, 1fr); }
  .task-card { padding: 16px; }
  .lab-answer-grid { grid-template-columns: 1fr; }
  .stat-card:last-child { grid-column: 1 / -1; min-height: 108px; }
  .mistake-detail { padding-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}