/* Ясность.
   Раскладка: таблица для проверки зрения — карта курса; чтение — колонка в 66 знаков с заметками на полях;
   опыты — единственные «предметы» в рамке. Днём — стены кабинета окулиста, ночью — затемнённый кабинет,
   в котором светится только таблица. */

:root {
  --bg: #e9eeec;
  --paper: #f7f9f8;
  --panel: #ffffff;
  --ink: #131719;
  --ink-2: #455055;
  --ink-3: #6f7c80;
  --line: #d2dad8;
  --line-2: #b7c3c0;
  --accent: #2441c4;
  --accent-ink: #ffffff;
  --accent-soft: #e2e7fa;
  --ok: #17734c;
  --ok-soft: #d9eee3;
  --bad: #bb3326;
  --bad-soft: #f6e0dc;
  --warn: #9a6200;
  --warn-soft: #f6ecd6;
  --glass: #dfe9f2;
  --glass-2: #c5d6e6;
  --chart-bg: #ffffff;
  --chart-ink: #0f1213;
  --chart-mute: #8b9497;
  --chart-accent: #2441c4;
  --chart-rule: rgba(15, 18, 19, .12);
  --chart-text: #4c5558;
  --chart-shadow: 0 1px 0 rgba(15, 18, 19, .06), 0 18px 40px -18px rgba(15, 30, 40, .28);
  --shadow: 0 1px 2px rgba(15, 25, 30, .06), 0 8px 24px -14px rgba(15, 25, 30, .22);
  --hl: #fff2b8;

  --f-display: "Unbounded", "Golos Text", system-ui, sans-serif;
  --f-body: "Literata", "PT Serif", Georgia, "Times New Roman", serif;
  --f-ui: "Golos Text", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;

  --measure: 40rem;
  --wrap: 72rem;
  --r: 12px;
  --r-s: 8px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0d0f;
    --paper: #11161a;
    --panel: #141a1e;
    --ink: #e5eae8;
    --ink-2: #a5b0b0;
    --ink-3: #6e7a7c;
    --line: #232d31;
    --line-2: #34434a;
    --accent: #93a6ff;
    --accent-ink: #0b0f1f;
    --accent-soft: #1b2347;
    --ok: #5bc893;
    --ok-soft: #12301f;
    --bad: #ff8b77;
    --bad-soft: #3b1913;
    --warn: #e6b45a;
    --warn-soft: #34270e;
    --glass: #1b2a36;
    --glass-2: #26394a;
    --chart-bg: #eef2f0;
    --chart-ink: #0e1112;
    --chart-mute: #7d8689;
    --chart-shadow: 0 0 0 1px rgba(238, 242, 240, .12), 0 0 90px -10px rgba(214, 232, 226, .22);
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 30px -16px rgba(0, 0, 0, .7);
    --hl: #4a4113;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a0d0f;
  --paper: #11161a;
  --panel: #141a1e;
  --ink: #e5eae8;
  --ink-2: #a5b0b0;
  --ink-3: #6e7a7c;
  --line: #232d31;
  --line-2: #34434a;
  --accent: #93a6ff;
  --accent-ink: #0b0f1f;
  --accent-soft: #1b2347;
  --ok: #5bc893;
  --ok-soft: #12301f;
  --bad: #ff8b77;
  --bad-soft: #3b1913;
  --warn: #e6b45a;
  --warn-soft: #34270e;
  --glass: #1b2a36;
  --glass-2: #26394a;
  --chart-bg: #eef2f0;
  --chart-ink: #0e1112;
  --chart-mute: #7d8689;
  --chart-shadow: 0 0 0 1px rgba(238, 242, 240, .12), 0 0 90px -10px rgba(214, 232, 226, .22);
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 30px -16px rgba(0, 0, 0, .7);
  --hl: #4a4113;
  color-scheme: dark;
}

/* ---------- основа ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.5 var(--f-ui);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: var(--bg);
}
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: .18em; text-decoration-thickness: 1px; }
button, input, textarea, select { font: inherit; color: inherit; }
::selection { background: var(--accent-soft); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
mark { background: var(--hl); color: inherit; padding: 0 .12em; border-radius: 2px; }

.wrap {
  max-width: calc(var(--wrap) + 64px);
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 720px) {
  .wrap { padding-left: max(32px, env(safe-area-inset-left, 0px)); padding-right: max(32px, env(safe-area-inset-right, 0px)); }
}

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--ink-3); }
.kicker {
  font: 600 .75rem/1.3 var(--f-ui);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.num, .tnum { font-variant-numeric: tabular-nums; }

/* ---------- верхняя панель ---------- */

.topbar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  max-width: calc(var(--wrap) + 64px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.logo {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--ink); text-decoration: none;
  font: 600 1rem/1 var(--f-display); letter-spacing: .01em;
  flex: none;
}
.logo svg { color: var(--ink); }
.nav {
  display: flex; gap: 2px;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
  min-width: 0;
}
.nav::-webkit-scrollbar { display: none; }
.nav a {
  flex: none;
  padding: 8px 11px;
  border-radius: 999px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
}
.nav a:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); }
.nav a[aria-current="page"] { color: var(--ink); background: color-mix(in srgb, var(--ink) 9%, transparent); }
.theme-btn {
  flex: none;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: transparent;
  display: grid; place-items: center;
  cursor: pointer;
  color: var(--ink-2);
}
.theme-btn:hover { color: var(--ink); border-color: var(--ink-3); }
.readbar { height: 2px; background: transparent; }
.readbar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .12s linear; }

@media (max-width: 640px) {
  .topbar-in { flex-wrap: wrap; gap: 0 8px; padding-top: 6px; }
  .logo { order: 1; height: 40px; }
  .theme-btn { order: 2; margin-left: auto; width: 32px; height: 32px; }
  .nav { order: 3; width: 100%; margin: 0 -6px; padding-bottom: 6px; justify-content: space-between; }
  .nav a { padding: 6px 8px; font-size: .85rem; }
}

/* ---------- кнопки и поля ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px;
  padding: 9px 18px;
  border-radius: 10px;
  border: 1px solid var(--line-2);
  background: var(--panel);
  color: var(--ink);
  font: 600 .95rem/1.2 var(--f-ui);
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, transform .1s;
}
.btn:hover { border-color: var(--ink-3); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 88%, var(--ink)); }
.btn.ghost { background: transparent; }
.btn.small { min-height: 34px; padding: 6px 12px; font-size: .85rem; border-radius: 8px; }
.btn.big { min-height: 52px; padding: 12px 26px; font-size: 1.05rem; border-radius: 12px; }
.btn.danger { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, var(--line-2)); }
.link {
  background: none; border: 0; padding: 0;
  color: var(--accent); cursor: pointer;
  font: inherit; text-decoration: underline; text-underline-offset: .18em; text-decoration-thickness: 1px;
}
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.spread { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.cols2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cols3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 560px) { .cols2, .cols3 { grid-template-columns: 1fr; } }
.cols2 > *, .cols3 > * { min-width: 0; }

.field {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border-radius: var(--r-s);
  border: 1px solid var(--line-2);
  background: var(--paper);
  font: 400 1rem/1.4 var(--f-ui);
  color: var(--ink);
}
.field:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field.num { width: 9rem; font-variant-numeric: tabular-nums; }
textarea.field { min-height: 110px; resize: vertical; line-height: 1.55; font-family: var(--f-body); font-size: 1.02rem; }
label.lbl { display: block; font: 500 .9rem/1.35 var(--f-ui); color: var(--ink-2); margin-bottom: 6px; }

/* ползунок */
.slider { display: flex; flex-direction: column; gap: 6px; }
.slider-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-size: .92rem; color: var(--ink-2); }
.slider-top b { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; white-space: nowrap; }
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 28px; margin: 0;
  background: transparent; cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: var(--line-2); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 4px; background: var(--line-2); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; margin-top: -8px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--panel);
  box-shadow: 0 0 0 1px var(--accent), 0 2px 6px rgba(0, 0, 0, .2);
}
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--panel);
  box-shadow: 0 0 0 1px var(--accent);
}
input[type="range"]:focus-visible { outline: none; }
input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px var(--accent-soft), 0 0 0 1px var(--accent); }

.chip {
  min-height: 36px; padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  font: 600 .88rem/1 var(--f-ui);
  font-variant-numeric: tabular-nums;
  cursor: pointer; color: var(--ink-2);
}
.chip:hover { border-color: var(--ink-3); color: var(--ink); }
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.chip:disabled { cursor: default; opacity: .55; }
.chip.on:disabled { opacity: 1; }

.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; border-radius: 12px; background: color-mix(in srgb, var(--ink) 6%, transparent); }
.seg button { border: 0; background: transparent; padding: 7px 12px; border-radius: 9px; cursor: pointer; font: 500 .9rem/1.2 var(--f-ui); color: var(--ink-2); }
.seg button.on { background: var(--panel); color: var(--ink); box-shadow: var(--shadow); }

/* ---------- главная: таблица ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding-block: clamp(28px, 6vw, 72px) clamp(32px, 6vw, 64px);
}
.hero h1 {
  font: 800 clamp(3rem, 9vw, 5.6rem)/.95 var(--f-display);
  letter-spacing: -.02em;
  margin: 14px 0 22px;
}
.hero .lede {
  font: 400 clamp(1.15rem, 2.2vw, 1.4rem)/1.5 var(--f-body);
  color: var(--ink-2);
  margin: 0 0 26px;
  max-width: 32rem;
  text-wrap: pretty;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-stats { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--ink-3); font-size: .92rem; }
.hero-stats b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
}

.lightbox {
  background: var(--chart-bg);
  color: var(--chart-ink);
  border-radius: 4px;
  box-shadow: var(--chart-shadow);
  padding: clamp(18px, 3.4vw, 38px) clamp(12px, 3vw, 34px) clamp(14px, 2.6vw, 26px);
  --k: 1;
}
@media (max-width: 520px) { .lightbox { --k: .74; } }
.chart-rows { display: flex; flex-direction: column; gap: clamp(6px, 1.4vw, 12px); }
.crow {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr) 3rem;
  align-items: center;
  gap: 8px;
}
.crow-l, .crow-r {
  font: 500 .72rem/1.2 var(--f-ui);
  color: var(--chart-mute);
  font-variant-numeric: tabular-nums;
}
.crow-l b { display: block; color: var(--chart-ink); font-weight: 600; letter-spacing: .06em; }
.crow-r { text-align: right; }
.crow-letters { display: flex; justify-content: center; gap: .32em; font-size: calc(var(--s) * 1px * var(--k)); }
.letter {
  font: 700 1em/1 var(--f-display);
  width: 1.08em; height: 1.08em;
  display: grid; place-items: center;
  border: 0; border-radius: 4px;
  padding: 0;
  background: transparent;
  color: var(--chart-ink);
  cursor: pointer;
  transition: filter .35s ease, color .2s, transform .2s;
  -webkit-tap-highlight-color: transparent;
}
.letter.todo { filter: blur(.075em); opacity: .82; }
.letter.next { filter: blur(.035em); }
.letter:hover, .letter:focus-visible { filter: none; opacity: 1; color: var(--chart-accent); }
.letter:focus-visible { outline: 2px solid var(--chart-accent); outline-offset: 2px; }
.letter svg { width: .9em; height: .9em; }
@media (prefers-reduced-motion: no-preference) {
  .letter.next { animation: focusing 3.4s ease-in-out infinite; }
}
@keyframes focusing {
  0%, 100% { filter: blur(.05em); }
  50% { filter: blur(0); }
}
.chart-foot {
  margin-top: clamp(14px, 2.4vw, 22px);
  padding-top: 12px;
  border-top: 1px solid var(--chart-rule);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px;
  font: 500 .82rem/1.35 var(--f-ui);
  color: var(--chart-text);
}
.chart-foot b { color: var(--chart-ink); font-weight: 600; }
.chart-cap { min-height: 1.35em; }
@media (max-width: 520px) {
  .crow { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .crow-l { display: flex; gap: 6px; }
  .crow-l b { display: inline; }
  .crow-r { display: none; }
}

/* программа */
.section-head { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px 20px; margin: 0 0 22px; }
.section-head h2 { font: 600 clamp(1.4rem, 3vw, 1.9rem)/1.15 var(--f-display); margin: 0; letter-spacing: -.01em; }
.section-head p { margin: 0; color: var(--ink-3); max-width: 34rem; }
.program { padding-block: 8px 56px; }
.parts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; }
@media (max-width: 860px) { .parts { grid-template-columns: 1fr; } }
.part { border-top: 1px solid var(--line-2); padding: 22px 0 26px; }
.part-head { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 16px; align-items: baseline; }
.part-num { font: 600 .8rem/1 var(--f-ui); letter-spacing: .12em; color: var(--ink-3); grid-row: span 2; min-width: 2.2rem; }
.part-head h3 { margin: 0; font: 600 1.25rem/1.25 var(--f-display); letter-spacing: -.005em; }
.part-head h3 span { font-weight: 400; color: var(--ink-3); letter-spacing: .14em; margin-left: .5em; font-size: .78em; }
.part-desc { margin: 4px 0 0; color: var(--ink-2); font: 400 1rem/1.5 var(--f-body); }
.lesson-list { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-direction: column; }
.li a {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  gap: 2px 16px;
  padding: 10px 8px 10px 0;
  text-decoration: none; color: inherit;
  border-radius: 8px;
}
.li a:hover .li-title { color: var(--accent); }
.li-no { font: 500 .85rem/1.6 var(--f-ui); color: var(--ink-3); font-variant-numeric: tabular-nums; text-align: right; }
.li-title { font: 600 1rem/1.4 var(--f-ui); }
.li-line { grid-column: 2; color: var(--ink-3); font-size: .9rem; line-height: 1.45; }
.li-st { grid-row: 1 / span 2; grid-column: 3; align-self: start; font-size: .8rem; color: var(--ink-3); white-space: nowrap; padding-top: 2px; display: flex; align-items: center; gap: 6px; }
.li-st .dot { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid var(--line-2); }
.li.done .li-st .dot { background: var(--ok); border-color: var(--ok); }
.li.done .li-no { color: var(--ok); }
.li.next .li-st .dot { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.method { padding-block: 8px 72px; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; counter-reset: st; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }
.steps li { border-top: 2px solid var(--ink); padding-top: 12px; counter-increment: st; }
.steps li::before { content: counter(st); font: 600 .78rem/1 var(--f-ui); color: var(--ink-3); }
.steps h4 { margin: 6px 0 6px; font: 600 1.02rem/1.3 var(--f-display); }
.steps p { margin: 0; color: var(--ink-2); font-size: .94rem; }

.site-foot { border-top: 1px solid var(--line); padding-block: 24px 40px; color: var(--ink-3); font-size: .88rem; }

/* ---------- урок ---------- */

.lesson { padding-block: clamp(24px, 5vw, 56px) 80px; }
.lesson-head { max-width: var(--measure); margin: 0 auto 36px; }
.lesson-head .kicker a { color: inherit; text-decoration: none; }
.lesson-head .kicker a:hover { color: var(--accent); }
.lesson-title {
  font: 600 clamp(2rem, 6vw, 3.1rem)/1.08 var(--f-display);
  letter-spacing: -.02em;
  margin: 14px 0 16px;
  text-wrap: balance;
}
.lesson-lede { font: italic 400 clamp(1.12rem, 2.4vw, 1.32rem)/1.55 var(--f-body); color: var(--ink-2); margin: 0 0 18px; text-wrap: pretty; }
.lesson-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: .88rem; color: var(--ink-3); }
.lesson-meta .done-tag { color: var(--ok); font-weight: 600; }

.lesson-grid { display: grid; grid-template-columns: minmax(0, var(--measure)); justify-content: center; }
@media (min-width: 1180px) {
  .lesson-grid { grid-template-columns: 10rem minmax(0, var(--measure)) 16rem; gap: 0 3rem; }
  .lesson-head { margin-left: calc(10rem + 3rem); margin-right: auto; }
  .lesson-head { max-width: var(--measure); }
}
.rail { display: none; }
@media (min-width: 1180px) {
  .rail { display: block; position: sticky; top: 96px; align-self: start; }
  .rail ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--line-2); }
  .rail button {
    display: block; width: 100%; text-align: left;
    padding: 6px 0 6px 14px; margin-left: -1px;
    border: 0; border-left: 2px solid transparent; background: none;
    font: 500 .86rem/1.3 var(--f-ui); color: var(--ink-3); cursor: pointer;
  }
  .rail button:hover { color: var(--ink); }
  .rail button.on { color: var(--ink); border-left-color: var(--ink); }
}

.prose { font: 400 1.125rem/1.72 var(--f-body); color: var(--ink); min-width: 0; position: relative; }
.prose > * { margin: 0 0 1.1em; }
.prose p { text-wrap: pretty; hanging-punctuation: first; }
.prose h2 { font: 600 1.45rem/1.25 var(--f-display); letter-spacing: -.01em; margin: 1.9em 0 .7em; text-wrap: balance; }
.prose h3 { font: 600 1.12rem/1.35 var(--f-ui); margin: 1.6em 0 .5em; }
.prose strong { font-weight: 600; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: .35em 0; }
.prose li::marker { color: var(--ink-3); }
.prose blockquote { margin: 1.6em 0; padding: 0 0 0 1.4em; border-left: 1px solid var(--ink); font-style: italic; }
.prose blockquote p { margin: 0 0 .5em; }
.prose blockquote cite { display: block; font: normal 500 .88rem/1.4 var(--f-ui); color: var(--ink-3); }
.prose .pull {
  font: 400 1.38rem/1.45 var(--f-body);
  font-style: italic;
  margin: 1.5em 0;
  padding: .9em 0;
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  text-wrap: balance;
}
.prose .side {
  font: 400 .9rem/1.5 var(--f-ui);
  color: var(--ink-2);
  padding: 2px 0 2px 14px;
  border-left: 1px dotted var(--ink-3);
  margin: -.2em 0 1.3em;
}
@media (min-width: 1180px) {
  .prose .side {
    float: right; clear: right;
    width: 15rem;
    margin: .3em -18rem 1em 0;
    padding: 0; border: 0;
  }
  .prose .side::before { content: "На полях"; display: block; font: 600 .68rem/1.4 var(--f-ui); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; }
}
.prose a { color: var(--accent); }

.phase {
  display: flex; align-items: center; gap: 12px;
  margin: 2.6em 0 1.2em !important;
  font: 600 .75rem/1 var(--f-ui);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  scroll-margin-top: 90px;
}
.phase::after { content: ""; flex: 1; height: 1px; background: var(--line-2); }
.phase svg { flex: none; color: var(--ink-2); }
.prose > .phase:first-child { margin-top: 0 !important; }

/* опыт */
.exp {
  font: 400 1rem/1.55 var(--f-ui);
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  margin: 1.6em 0 1.8em !important;
  box-shadow: var(--shadow);
  clear: both;
}
.exp-head { display: flex; align-items: flex-start; gap: 12px; padding: 18px 20px 0; }
.exp-head > div { flex: 1; min-width: 0; }
.exp-no { font: 600 .72rem/1 var(--f-ui); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }
.exp-title { margin: 7px 0 0; font: 600 1.15rem/1.3 var(--f-display); letter-spacing: -.005em; }
.exp-body { padding: 16px 20px 22px; }
.exp-body p { margin: 0 0 .8em; }
.exp-body p:last-child { margin-bottom: 0; }
@media (max-width: 480px) {
  .exp-head { padding: 16px 14px 0; }
  .exp-body { padding: 14px 14px 18px; }
}
.exp .lead { font: 400 1.06rem/1.6 var(--f-body); color: var(--ink); }
.exp .hint { font-size: .88rem; color: var(--ink-3); }
.exp hr { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }

/* ворота */
.gate {
  font: 400 .98rem/1.5 var(--f-ui);
  color: var(--ink-2);
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px;
  padding: 14px 16px;
  border: 1px dashed var(--line-2);
  border-radius: var(--r);
  margin: 1.4em 0 !important;
}
.gate svg { flex: none; color: var(--ink-3); }
.gate p { margin: 0; flex: 1; min-width: 14rem; }
.gated > * { margin: 0 0 1.1em; }
.gated.reveal { animation: reveal .6s ease both; }
@keyframes reveal { from { opacity: 0; transform: translateY(8px); filter: blur(4px); } to { opacity: 1; transform: none; filter: none; } }

/* вопросы */
.quiz {
  font: 400 1rem/1.5 var(--f-ui);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  padding: 20px 0 22px;
  margin: 1.6em 0 !important;
  clear: both;
}
.quiz + .quiz { border-top: 0; margin-top: -1.6em !important; }
.quiz .q { font: 600 1.06rem/1.5 var(--f-ui); margin: 0 0 14px; }
.quiz .q .qn { font-weight: 500; color: var(--ink-3); margin-right: .4em; }
.opts { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.opt {
  display: flex; align-items: flex-start; gap: 12px;
  width: 100%; text-align: left;
  padding: 11px 14px;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: var(--paper);
  cursor: pointer;
  font: 400 1rem/1.45 var(--f-ui);
  color: var(--ink);
}
.opt:hover:not(:disabled) { border-color: var(--ink-3); }
.opt .mk { flex: none; width: 18px; height: 18px; margin-top: 2px; border-radius: 50%; border: 1.5px solid var(--line-2); display: grid; place-items: center; font-size: 11px; font-weight: 700; }
.opt.on { border-color: var(--accent); background: var(--accent-soft); }
.opt.on .mk { border-color: var(--accent); background: var(--accent); box-shadow: inset 0 0 0 3px var(--accent-soft); }
.opt:disabled { cursor: default; }
.opt.right { border-color: var(--ok); background: var(--ok-soft); }
.opt.right .mk { border-color: var(--ok); background: var(--ok); color: var(--panel); box-shadow: none; }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.wrong .mk { border-color: var(--bad); background: var(--bad); color: var(--panel); box-shadow: none; }
.opt.dim { opacity: .6; }

.conf { margin: 4px 0 16px; }
.conf .lbl { margin-bottom: 8px; }
.conf-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.conf .hint { font-size: .82rem; color: var(--ink-3); margin-top: 6px; }

.verdict { margin-top: 14px; }
.verdict:empty { display: none; }
.verdict .vh { font: 600 1rem/1.4 var(--f-ui); display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.verdict.ok .vh { color: var(--ok); }
.verdict.bad .vh { color: var(--bad); }
.verdict .why { font: 400 1.02rem/1.6 var(--f-body); color: var(--ink); margin: 0; }
.verdict .calib { margin-top: 8px; font-size: .88rem; color: var(--ink-3); }

.numq .row { margin-bottom: 14px; }
.numq .unit { color: var(--ink-2); }

/* записи */
.reflect {
  font: 400 1rem/1.5 var(--f-ui);
  margin: 1.4em 0 1.8em !important;
}
.reflect .q { font: 400 1.12rem/1.55 var(--f-body); margin: 0 0 10px; }
.reflect .q::before { content: "✎ "; color: var(--ink-3); }
.reflect .meta { display: flex; justify-content: space-between; gap: 10px; margin-top: 6px; font-size: .82rem; color: var(--ink-3); }
.reflect .saved { color: var(--ok); }

.fig { margin: 1.6em 0 !important; font: 400 .9rem/1.45 var(--f-ui); }
.fig figcaption { color: var(--ink-3); margin-top: 8px; }
.fig .svgbox { overflow-x: auto; }

/* линза */
.lens-card {
  font: 400 1rem/1.5 var(--f-ui);
  display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 22px; align-items: center;
  margin: 1.6em 0 2em !important;
  clear: both;
}
@media (max-width: 520px) { .lens-card { grid-template-columns: 1fr; justify-items: start; } }
.lens-card h4 { margin: 0 0 6px; font: 600 1.3rem/1.25 var(--f-display); }
.lens-card .line { font: 400 1.08rem/1.55 var(--f-body); margin: 0 0 10px; }
.lens-card dl { margin: 0; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 12px; font-size: .94rem; }
.lens-card dt { color: var(--ink-3); }
.lens-card dd { margin: 0; color: var(--ink-2); }
.lens-svg { display: block; width: 100%; max-width: 170px; height: auto; overflow: visible; }
.lens-svg .rim { fill: none; stroke: var(--ink); }
.lens-svg .tick { stroke: var(--ink-3); }
.lens-svg .glass { fill: var(--glass); }
.lens-svg .glare { fill: none; stroke: var(--panel); stroke-linecap: round; opacity: .75; }
.lens-svg .handle { fill: var(--ink); }
.lens-svg text { fill: var(--ink); font-family: var(--f-display); font-weight: 600; }
.lens-svg .lnum { fill: var(--ink-3); font-family: var(--f-ui); font-weight: 600; }
.lens-svg.off .rim { stroke: var(--line-2); }
.lens-svg.off .handle { fill: var(--line-2); }
.lens-svg.off .glass { fill: transparent; }
.lens-svg.off text { fill: var(--ink-3); }

/* финал урока */
.finish { max-width: var(--measure); margin: 56px auto 0; border-top: 1px solid var(--ink); padding-top: 28px; }
@media (min-width: 1180px) { .finish { margin-left: calc(10rem + 3rem); } }
.finish h3 { margin: 0 0 8px; font: 600 1.3rem/1.3 var(--f-display); }
.finish p { margin: 0 0 18px; color: var(--ink-2); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 30px; }
.pager a {
  display: flex; flex-direction: column; gap: 4px;
  padding: 14px 16px; border-radius: var(--r); border: 1px solid var(--line-2);
  text-decoration: none; color: var(--ink);
  min-width: 0;
}
.pager a:hover { border-color: var(--ink-3); }
.pager a span { font-size: .8rem; color: var(--ink-3); }
.pager a b { font-weight: 600; }
.pager .nx { text-align: right; grid-column: 2; }
@media (prefers-reduced-motion: no-preference) {
  .lens-pop { animation: lens-pop .9s cubic-bezier(.2, .9, .3, 1.2) both; }
}
@keyframes lens-pop { from { transform: scale(.6) rotate(-40deg); opacity: 0; filter: blur(6px); } to { transform: none; opacity: 1; filter: none; } }

/* ---------- общие части виджетов ---------- */

.big-num { font: 600 2rem/1.1 var(--f-display); font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat span { font-size: .82rem; color: var(--ink-3); }
.stat b { font: 600 1.35rem/1.2 var(--f-display); font-variant-numeric: tabular-nums; }
.stats-row { display: flex; flex-wrap: wrap; gap: 14px 28px; }
.note-box { padding: 12px 14px; border-radius: 10px; background: color-mix(in srgb, var(--ink) 5%, transparent); font-size: .95rem; }
.note-box.ok { background: var(--ok-soft); }
.note-box.bad { background: var(--bad-soft); }
.note-box.warn { background: var(--warn-soft); }
.svgbox { width: 100%; overflow-x: auto; }
.svgbox svg { display: block; width: 100%; height: auto; }
.chart text { font: 500 11px var(--f-ui); fill: var(--ink-3); }
.chart .axis { stroke: var(--line-2); }
.chart .grid { stroke: var(--line); }
.chart .lbl { font-size: 11px; fill: var(--ink-2); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .84rem; color: var(--ink-2); margin-top: 8px; }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.legend i.dot { width: 10px; height: 10px; border-radius: 50%; }

.cls-item { padding: 12px 0; border-top: 1px solid var(--line); }
.cls-item:first-child { border-top: 0; padding-top: 0; }
.cls-item .t { margin: 0 0 8px; font: 400 1.02rem/1.5 var(--f-body); }
.cls-item .why { margin: 8px 0 0; font-size: .92rem; color: var(--ink-2); }
.cls-btns { display: flex; flex-wrap: wrap; gap: 6px; }
.cls-btns .chip.right { background: var(--ok); border-color: var(--ok); color: var(--panel); opacity: 1; }
.cls-btns .chip.wrong { background: var(--bad); border-color: var(--bad); color: var(--panel); opacity: 1; }

.steps-in { display: flex; flex-direction: column; gap: 14px; }
.step-in label { display: block; font: 600 .92rem/1.4 var(--f-ui); margin-bottom: 6px; }
.step-in .hint { display: block; font-weight: 400; color: var(--ink-3); font-size: .85rem; }

/* ---------- тетрадь, линзы, зеркало, тренажёр ---------- */

.page { padding-block: clamp(28px, 5vw, 56px) 80px; }
.page-head { max-width: 44rem; margin-bottom: 36px; }
.page-head h1 { font: 700 clamp(2rem, 6vw, 3rem)/1.05 var(--f-display); letter-spacing: -.02em; margin: 12px 0 14px; }
.page-head p { font: 400 1.15rem/1.6 var(--f-body); color: var(--ink-2); margin: 0; }

.nb { max-width: 46rem; }
.nb-lesson { border-top: 1px solid var(--line-2); padding: 20px 0 8px; }
.nb-lesson h3 { margin: 0 0 12px; font: 600 1.08rem/1.35 var(--f-display); }
.nb-lesson h3 a { color: inherit; text-decoration: none; }
.nb-lesson h3 a:hover { color: var(--accent); }
.nb-lesson h3 small { display: block; font: 500 .75rem/1.4 var(--f-ui); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; }
.nb-item { margin-bottom: 18px; }
.nb-item .q { font: 400 1.02rem/1.5 var(--f-body); color: var(--ink-2); margin: 0 0 8px; }
.nb-empty { color: var(--ink-3); font-size: .95rem; }
.nb-tools { position: sticky; top: 72px; z-index: 2; background: var(--bg); padding: 10px 0; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.lens-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 22px 18px; }
.lens-btn { border: 0; background: none; padding: 6px; border-radius: 14px; cursor: pointer; text-align: center; color: inherit; font: inherit; }
.lens-btn:hover { background: color-mix(in srgb, var(--ink) 4%, transparent); }
.lens-btn.sel { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.lens-btn .cap { display: block; margin-top: 4px; font-size: .8rem; color: var(--ink-3); }
.lens-btn.off .lens-svg { filter: blur(1.6px); opacity: .7; }
.lens-detail { margin: 30px 0; padding: 24px; border-radius: var(--r); background: var(--panel); border: 1px solid var(--line-2); box-shadow: var(--shadow); }
.lens-detail .lens-card { margin: 0 !important; }
.cheat { margin-top: 40px; }
.cheat ol { padding-left: 1.4em; font: 400 1.05rem/1.6 var(--f-body); }
.cheat li { margin-bottom: 10px; }
.cheat li b { font-family: var(--f-ui); font-weight: 600; }

.mirror-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
@media (max-width: 900px) { .mirror-grid { grid-template-columns: 1fr; } }
.mirror-text { font: 400 1.1rem/1.65 var(--f-body); }
.mirror-text p { margin: 0 0 1em; }
.bins { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: .95rem; margin: 10px 0 20px; }
.bins th, .bins td { text-align: left; padding: 8px 10px 8px 0; border-bottom: 1px solid var(--line); }
.bins th { font-weight: 500; color: var(--ink-3); font-size: .82rem; }
.bins .bar { height: 6px; border-radius: 3px; background: var(--line); position: relative; min-width: 80px; }
.bins .bar i { position: absolute; inset: 0 auto 0 0; border-radius: 3px; background: var(--ink-2); }
.bins .bar u { position: absolute; top: -4px; width: 2px; height: 14px; background: var(--accent); }
.danger-zone { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); }

.trainer { max-width: 42rem; }
.trainer .card {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--r);
  padding: 24px; box-shadow: var(--shadow);
}
.trainer .stmt { font: 400 1.3rem/1.5 var(--f-body); margin: 6px 0 18px; text-wrap: pretty; }
.trainer .tf { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }

/* ---------- уведомление ---------- */

.toast {
  position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 40;
  background: var(--ink); color: var(--bg);
  padding: 10px 16px; border-radius: 10px;
  font: 500 .92rem/1.3 var(--f-ui);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .5);
  max-width: calc(100% - 32px);
  transition: opacity .3s, transform .3s;
}
.toast.out { opacity: 0; transform: translate(-50%, 8px); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

/* ---------- часть I: виджеты ---------- */

.stroop-card {
  background: var(--chart-bg);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  min-height: 150px;
  display: grid; place-items: center;
  margin: 10px 0 14px;
}
.stroop-word { font: 800 clamp(1.8rem, 7vw, 2.8rem)/1 var(--f-display); letter-spacing: .02em; user-select: none; }
.stroop-btns { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
@media (max-width: 480px) { .stroop-btns { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.stroop-btns .btn { padding-inline: 8px; }
.key { font: 600 .7rem/1 var(--f-ui); color: var(--ink-3); border: 1px solid var(--line-2); border-radius: 4px; padding: 2px 5px; }
@media (hover: none) { .key { display: none; } }

.hbar { display: grid; grid-template-columns: 11rem minmax(0, 1fr) auto; gap: 12px; align-items: center; margin: 8px 0; font-size: .92rem; }
@media (max-width: 560px) { .hbar { grid-template-columns: 1fr auto; } .hbar-t { grid-column: 1 / -1; grid-row: 2; } }
.hbar-t { height: 12px; border-radius: 6px; background: color-mix(in srgb, var(--ink) 7%, transparent); overflow: hidden; }
.hbar-t i { display: block; height: 100%; border-radius: 6px; background: var(--ink-2); transition: width .6s ease; }
.hbar-t i.calm { background: var(--ok); }
.hbar-t i.hot { background: var(--bad); }
.hbar-t i.acc { background: var(--accent); }
.hbar-v { font-weight: 600; white-space: nowrap; }
.hbar-v small { font-weight: 400; color: var(--ink-3); }

.pic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 6px 0 16px; }
.pic-opt {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 8px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--paper);
  cursor: pointer; color: var(--ink); font: 600 .9rem/1 var(--f-ui);
}
.pic-opt:hover:not(:disabled) { border-color: var(--ink-3); }
.pic-opt.on { border-color: var(--accent); background: var(--accent-soft); }
.pic-opt.right { border-color: var(--ok); background: var(--ok-soft); }
.pic-opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.pic-opt:disabled { cursor: default; }
.bike { width: 100%; height: auto; }
.bike .wheel { fill: none; stroke: var(--ink-2); stroke-width: 2.4; }
.bike .hub { fill: var(--ink-2); }
.bike .frame { stroke: var(--ink); stroke-width: 2.6; stroke-linecap: round; }
.bike .seat { stroke: var(--ink); stroke-width: 4; stroke-linecap: round; }
.bike .ring { fill: none; stroke: var(--ink); stroke-width: 2; }
.bike .chain { fill: none; stroke: var(--accent); stroke-width: 2.2; stroke-dasharray: 2.5 1.6; stroke-linejoin: round; }

.exp .story { font: 400 1.06rem/1.65 var(--f-body); margin: 0 0 16px; }
.headline {
  font: 700 clamp(1.2rem, 3.6vw, 1.55rem)/1.25 var(--f-display);
  letter-spacing: -.01em;
  padding: 14px 0; margin: 0 0 14px;
  border-top: 3px solid var(--ink); border-bottom: 1px solid var(--ink);
}
.opt .mk.sq { border-radius: 4px; }
.opt.check.on .mk { box-shadow: none; color: var(--accent-ink); }
.opt.key { box-shadow: inset 0 0 0 2px var(--warn); }

.dots-wrap { max-width: 340px; margin: 8px auto 6px; }
.dots-svg { display: block; width: 100%; height: auto; touch-action: manipulation; cursor: crosshair; background: var(--paper); border-radius: 10px; border: 1px solid var(--line); }
.dots-svg .dot { fill: var(--ink); transition: fill .2s; }
.dots-svg .dot.on { fill: var(--accent); }
.dots-svg .seg { stroke: var(--accent); stroke-width: 3.5; stroke-linecap: round; }
.dots-svg .seg.ghost { stroke-dasharray: 6 6; opacity: .5; }
.dots-svg .vtx { fill: var(--accent); }
.dots-svg .box-hint { fill: none; stroke: var(--warn); stroke-width: 1.5; stroke-dasharray: 5 5; }
.dots-status { text-align: center; color: var(--ink-2); font-size: .95rem; min-height: 1.5em; }

/* ---------- часть II: виджеты ---------- */

.wheel-num { display: flex; align-items: baseline; gap: 12px; margin: 6px 0 4px; }
.wheel-num span { font-size: .85rem; color: var(--ink-3); }
.wheel-num b { font: 800 2.4rem/1 var(--f-display); letter-spacing: -.02em; }

.anc-row { padding: 12px 0; border-top: 1px solid var(--line); }
.anc-row:first-child { border-top: 0; }
.anc-q { font-weight: 600; margin-bottom: 10px; }
.anc-line { position: relative; height: 22px; margin: 0 8px 8px; }
.anc-line::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 2px; background: var(--line-2); }
.anc-line i { position: absolute; top: 50%; transform: translate(-50%, -50%); }
.m-anchor, .k-anchor { width: 12px; height: 12px; background: var(--ink-3); transform: translate(-50%, -50%) rotate(45deg) !important; }
.m-est, .k-est { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 2px solid var(--panel); }
.m-truth, .k-truth { width: 3px; height: 22px; background: var(--ok); }
.anc-nums { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: .88rem; color: var(--ink-2); align-items: center; }
.anc-nums i { display: inline-block; position: static; vertical-align: middle; margin-right: 6px; }
.anc-nums .k-anchor { transform: rotate(45deg) !important; width: 9px; height: 9px; }
.anc-nums .k-est { width: 10px; height: 10px; border: 0; }
.anc-nums .k-truth { width: 3px; height: 12px; }
.anc-nums .pulled { color: var(--bad); font-weight: 600; font-size: .82rem; }

.triples { display: flex; flex-wrap: wrap; gap: 6px; }
.triple { display: inline-flex; gap: 8px; align-items: center; padding: 6px 10px; border-radius: 8px; font-size: .92rem; border: 1px solid var(--line-2); background: var(--paper); }
.triple b { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }
.triple.ok b { color: var(--ok); }
.triple.no b { color: var(--bad); }
.field.num.sm { width: 5.5rem; }

.wcards { display: flex; flex-wrap: wrap; gap: 10px; margin: 6px 0 16px; }
.wcard {
  width: 92px; height: 120px;
  display: grid; place-items: center; text-align: center;
  border-radius: 10px; border: 1.5px solid var(--line-2); background: var(--chart-bg); color: var(--chart-ink);
  font: 700 1.25rem/1.2 var(--f-display); padding: 6px;
  cursor: pointer; transition: transform .15s, border-color .15s, box-shadow .15s;
}
.wcard:hover:not(:disabled) { transform: translateY(-2px); }
.wcard.on { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); transform: translateY(-4px); }
.wcard.right { border-color: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.wcard.wrong { border-color: var(--bad); box-shadow: 0 0 0 3px var(--bad-soft); }
.wcard.dim { opacity: .55; }
.wcard:disabled { cursor: default; }
@media (max-width: 420px) { .wcard { width: 72px; height: 96px; font-size: 1rem; } }

.bomber-wrap { max-width: 460px; margin: 4px auto 0; }
.bomber { display: block; width: 100%; height: auto; }
.bomber .part { fill: color-mix(in srgb, var(--ink) 14%, var(--panel)); stroke: var(--ink-2); stroke-width: 1.2; transition: fill .15s; }
.bomber .part.eng { fill: color-mix(in srgb, var(--ink) 24%, var(--panel)); }
.bomber .part.glass { fill: var(--glass-2); }
.bomber .zone { cursor: pointer; outline: none; }
.bomber .zone:hover .part, .bomber .zone:focus-visible .part { fill: var(--accent-soft); stroke: var(--accent); }
.bomber .zone.on .part { fill: color-mix(in srgb, var(--accent) 40%, var(--panel)); stroke: var(--accent); stroke-width: 2; }
.bomber .zone.answer .part { stroke: var(--ok); stroke-width: 2.4; }
.bomber .hole { fill: var(--bad); pointer-events: none; }
.bomber .ghost-hole { fill: none; stroke: var(--bad); stroke-width: 1.5; stroke-dasharray: 3 2; opacity: .8; pointer-events: none; }

.coins-cv { display: block; width: 100%; height: auto; image-rendering: pixelated; border-radius: 8px; background: var(--paper); border: 1px solid var(--line); }
.coins-info { margin-top: 10px; font: 400 1.02rem/1.55 var(--f-body); min-height: 3.1em; }
.coins-years { margin-top: 10px; font-size: .82rem; color: var(--ink-3); overflow-wrap: anywhere; }

.research { margin-top: 16px; }
.flip-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 520px) { .flip-grid { grid-template-columns: 1fr; } }
.flip {
  display: flex; flex-direction: column; justify-content: space-between; gap: 12px; text-align: left;
  min-height: 112px; padding: 14px 16px; border-radius: 10px;
  border: 1px solid var(--line-2); background: var(--paper); color: var(--ink); cursor: pointer;
  transition: transform .35s, background .2s;
}
.flip-t { font: 400 1.05rem/1.45 var(--f-body); }
.flip-k { font: 600 .75rem/1 var(--f-ui); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.flip.on { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 40%, var(--line-2)); }
.flip.on .flip-k { color: var(--warn); }
@media (prefers-reduced-motion: no-preference) { .flip:active { transform: rotateX(18deg); } }

/* ---------- часть III: виджеты ---------- */

.phr { display: flex; flex-direction: column; gap: 14px; margin-bottom: 16px; }
.phr-row { display: flex; flex-direction: column; gap: 2px; }
.phr-track { position: relative; height: 12px; margin: 0 10px; }
.phr-band { position: absolute; top: 2px; height: 8px; border-radius: 4px; background: color-mix(in srgb, var(--ink) 18%, transparent); }
.phr-you { position: absolute; top: -1px; width: 3px; height: 14px; margin-left: -1.5px; border-radius: 2px; background: var(--accent); }

.iv-list { display: flex; flex-direction: column; margin-bottom: 16px; }
.iv-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 14px; align-items: center; padding: 10px 0; border-top: 1px solid var(--line); }
.iv-row:first-child { border-top: 0; }
@media (max-width: 640px) { .iv-row { grid-template-columns: 1fr; } }
.iv-q { font-size: .97rem; }
.iv-q span { color: var(--ink-3); }
.iv-in { gap: 6px; flex-wrap: nowrap; }
.iv-in .field.num.sm { width: 5.8rem; }
.iv-mark { font-size: .88rem; font-weight: 600; white-space: nowrap; min-width: 4.5rem; }
.iv-mark.ok { color: var(--ok); }
.iv-mark.bad { color: var(--bad); }

.exp .quiz.inexp { border: 0; padding: 4px 0 0; margin: 0 !important; }
.exp .quiz.inexp .q { font-size: 1rem; }

.k-svg circle { transition: fill .25s, opacity .25s; }
.k-svg .tp { fill: var(--bad); }
.k-svg .fn { fill: color-mix(in srgb, var(--bad) 35%, transparent); }
.k-svg .fp { fill: var(--warn); }
.k-svg .tn { fill: var(--line-2); }
.k-svg .dim { opacity: .12; }
.k-text { margin-top: 12px; }
.k-text p { margin: 0 0 6px; }
.k-text .big { font: 600 1.15rem/1.45 var(--f-body); }

.clue { font: 400 1.08rem/1.6 var(--f-body); padding: 12px 16px; border-radius: 10px; background: var(--warn-soft); margin: 6px 0 14px; }
.det-bars { margin-bottom: 6px; }
.det-bars .hbar { grid-template-columns: 4.5rem minmax(0, 1fr) 3rem; }
.det-share { font-size: .85rem; color: var(--ink-3); margin: 4px 0 12px; }

.doors { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 10px 0 14px; }
.door {
  aspect-ratio: 3 / 4; max-width: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  border-radius: 10px 10px 4px 4px; border: 2px solid var(--line-2);
  background: color-mix(in srgb, var(--ink) 8%, var(--panel)); color: var(--ink);
  font: 600 .95rem/1.2 var(--f-ui); cursor: pointer; transition: background .2s, border-color .2s;
}
.door:hover:not(:disabled) { border-color: var(--accent); }
.door:disabled { cursor: default; }
.door-ico { font: 800 2rem/1 var(--f-display); color: var(--ink-3); }
.door.picked { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.door.open { background: var(--paper); }
.door.open .door-l { font: 700 1.05rem/1.2 var(--f-display); color: var(--ink-3); }
.door.car { background: var(--ok-soft); border-color: var(--ok); }
.door.car .door-l { color: var(--ok); }
.monty-stats { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 12px; font-size: .92rem; color: var(--ink-2); }

.exp-quote { margin: 0 0 16px; padding: 0 0 0 16px; border-left: 2px solid var(--ink); font: italic 400 1.06rem/1.6 var(--f-body); }
.exp-quote p { margin: 0 0 6px; }
.exp-quote cite { font: normal 500 .85rem/1.4 var(--f-ui); color: var(--ink-3); }

/* ---------- часть IV: виджеты ---------- */

.inv-row { flex-wrap: nowrap; gap: 10px; }
.inv-n { flex: none; width: 1.6rem; height: 1.6rem; border-radius: 50%; display: grid; place-items: center; font: 600 .8rem/1 var(--f-ui); background: var(--bad-soft); color: var(--bad); }

.gov-dash { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 6px 0 12px; padding: 12px 14px; border-radius: 10px; background: color-mix(in srgb, var(--ink) 5%, transparent); }
@media (max-width: 560px) { .gov-dash { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.gov-news { margin-top: 12px; font: 400 1.02rem/1.6 var(--f-body); min-height: 3em; }
.gov-news p { margin: 0; }

.chain { display: flex; flex-wrap: wrap; align-items: stretch; gap: 8px; margin: 14px 0 0; }
.chain-step { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--paper); min-width: 0; }
.chain-step b { font: 600 1.1rem/1.2 var(--f-display); }
.chain-step span { font-size: .8rem; color: var(--ink-3); }
.chain-step .chain-op { font-size: .74rem; color: var(--accent); font-weight: 600; }
.chain-step.last { border-color: var(--accent); background: var(--accent-soft); }

/* ---------- часть V: виджеты ---------- */

.tub-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; align-items: center; margin: 6px 0 12px; }
@media (max-width: 560px) { .tub-grid { grid-template-columns: 1fr; } }
.tub { display: block; width: 100%; height: auto; }
.tub-back { fill: color-mix(in srgb, var(--ink) 4%, transparent); }
.tub-target { fill: var(--ok); opacity: .22; }
.tub-water { fill: var(--accent); opacity: .55; transition: y .25s linear, height .25s linear; }
.tub-stream { fill: var(--accent); opacity: .45; }
.tub-wall { fill: none; stroke: var(--ink); stroke-width: 3.5; stroke-linejoin: round; }
.tub-tap { fill: none; stroke: var(--ink-2); stroke-width: 5; stroke-linecap: round; }
.tub-drain { fill: var(--ink-2); }
.tub-info { font-size: .92rem; color: var(--ink-2); display: flex; flex-direction: column; gap: 4px; }
.tub-info > div:first-child { font: 600 1.15rem/1.3 var(--f-display); color: var(--ink); }
.ok-t { color: var(--ok); font-weight: 600; }

.cld { display: block; width: 100%; max-width: 560px; height: auto; margin: 0 auto; }
.cld-arr { fill: none; stroke: var(--ink-2); stroke-width: 2; }
.cld-head { fill: var(--ink-2); }
.cld-node rect { fill: var(--panel); stroke: var(--ink); stroke-width: 1.5; }
.cld-node text { fill: var(--ink); font: 600 13px var(--f-ui); text-anchor: middle; }
.cld-sign { fill: var(--ink); font: 700 18px var(--f-ui); text-anchor: middle; }
.cld-loop { font: 800 22px var(--f-display); text-anchor: middle; }
.cld-loop.r { fill: var(--accent); }
.cld-loop.b { fill: var(--warn); }

.shower-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 16px; margin: 4px 0 8px; font-size: .92rem; color: var(--ink-2); }
.shower-t { font: 800 2.2rem/1 var(--f-display); letter-spacing: -.02em; transition: color .3s; }
.shower-t.hot { color: var(--bad); }
.shower-t.cold { color: var(--accent); }
.shower-t.good { color: var(--ok); }

.fish-table .bins { margin: 12px 0 0; }

/* ---------- часть VI: виджеты ---------- */

.worlds { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 3px; max-width: 260px; }
.worlds i { aspect-ratio: 1; border-radius: 3px; background: var(--line); }
.worlds i.win { background: var(--ok); }
.worlds i.loss { background: var(--warn); }
.worlds i.ruin { background: var(--bad); }
.w-cap { font-size: .9rem; color: var(--ink-2); margin-bottom: 6px; }

.mx-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 16px; }
.mx-head .lbl { margin: 0; }
.mx-opts { gap: 8px; margin-top: 6px; }
.mx-row { flex-wrap: nowrap; gap: 8px; }
.mx-key { flex: none; width: 1.8rem; text-align: center; font: 700 1rem/1 var(--f-display); color: var(--accent); }
.mx { border-collapse: collapse; margin-top: 8px; min-width: 100%; }
.mx th { font: 600 .78rem/1.2 var(--f-ui); color: var(--ink-3); text-align: left; padding: 4px 6px 6px 0; }
.mx td { padding: 3px 6px 3px 0; vertical-align: middle; }
.mx td:first-child { min-width: 9rem; width: 100%; }
.field.sm { min-height: 38px; padding: 6px 10px; font-size: .95rem; }
.field.sel { width: auto; min-width: 3.4rem; padding-right: 4px; }
.mx-res { margin-top: 6px; }

.coin {
  width: 86px; height: 86px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  background: radial-gradient(circle at 35% 30%, color-mix(in srgb, var(--warn) 55%, var(--panel)), var(--warn));
  color: var(--panel); font: 700 .9rem/1 var(--f-display);
  box-shadow: inset 0 0 0 5px color-mix(in srgb, var(--warn) 70%, var(--ink)), var(--shadow);
}
@media (prefers-reduced-motion: no-preference) {
  .coin.flip { animation: coinflip .9s cubic-bezier(.3, .7, .4, 1) both; }
}
@keyframes coinflip { 0% { transform: translateY(0) rotateX(0); } 45% { transform: translateY(-60px) rotateX(900deg); } 100% { transform: translateY(0) rotateX(1800deg); } }

/* ---------- эпилог и мелкие экраны ---------- */

.chip.todo:not(.on) { border-style: dashed; color: var(--ink-3); }
.memo { margin-top: 6px; padding: 18px 20px; border-radius: 10px; border: 1px solid var(--ink); background: var(--paper); }
.memo ol { margin: 8px 0 0; padding-left: 1.3em; font: 400 1.05rem/1.55 var(--f-body); }
.memo li { margin-bottom: 8px; }
.memo li b { font-family: var(--f-ui); font-weight: 600; }

@media (max-width: 420px) {
  .chip { padding: 6px 8px; font-size: .84rem; }
  .conf-chips { gap: 5px; }
  .trainer .card { padding: 18px 14px; }
}