:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface-2: #f0ede6;
  --ink: #1d1f1c;
  --ink-2: #5b5f58;
  --line: #e2ddd2;
  --accent: #1f6f5c;
  --accent-ink: #ffffff;
  --accent-soft: #dcefe8;
  --ok: #2e8b57;
  --ok-soft: #cfe9d9;
  --inf: #a9d8bb;
  --gap: #d9534f;
  --gap-soft: #f8d7d5;
  --risk: #e9a23b;
  --risk-soft: #fbe8c8;
  --unk: #d9d6ce;
  --unk-ink: #6c6f68;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(30, 30, 20, .06), 0 6px 24px rgba(30, 30, 20, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141614; --surface: #1d201d; --surface-2: #252925; --ink: #eceee9; --ink-2: #a5aaa2; --line: #333833;
    --accent: #4fbf9f; --accent-ink: #0f1a16; --accent-soft: #1f3a32;
    --ok: #4cc27f; --ok-soft: #1f3a2a; --inf: #2f6a4a; --gap: #ef6b67; --gap-soft: #45211f;
    --risk: #f0b35a; --risk-soft: #43341c; --unk: #3a3f3a; --unk-ink: #a5aaa2;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 24px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #141614; --surface: #1d201d; --surface-2: #252925; --ink: #eceee9; --ink-2: #a5aaa2; --line: #333833;
  --accent: #4fbf9f; --accent-ink: #0f1a16; --accent-soft: #1f3a32;
  --ok: #4cc27f; --ok-soft: #1f3a2a; --inf: #2f6a4a; --gap: #ef6b67; --gap-soft: #45211f;
  --risk: #f0b35a; --risk-soft: #43341c; --unk: #3a3f3a; --unk-ink: #a5aaa2;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 1em; }
a { color: var(--accent); }
.muted { color: var(--ink-2); }
.small { font-size: .9rem; }
.tiny { font-size: .78rem; }
.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .75rem; font-weight: 600; color: var(--accent); margin-bottom: .6em; }
.lead { font-size: 1.1rem; color: var(--ink-2); max-width: 62ch; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px max(16px, calc((100vw - 1180px) / 2)); background: var(--surface); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--accent); text-decoration: none; font-weight: 700; font-size: 1.2rem; }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a { color: var(--ink-2); text-decoration: none; padding: 6px 12px; border-radius: 999px; font-size: .95rem; }
.topbar nav a.active, .topbar nav a:hover { background: var(--accent-soft); color: var(--accent); }

main { max-width: 1180px; margin: 0 auto; padding: 28px 16px 48px; outline: none; }
.foot { text-align: center; color: var(--ink-2); font-size: .8rem; padding: 24px 16px; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); margin-bottom: 18px; }
.narrow { max-width: 680px; margin-left: auto; margin-right: auto; }
.center { text-align: center; }
.col > .card:last-child { margin-bottom: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px;
  padding: 10px 20px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface);
  color: var(--ink); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn.small { min-height: 36px; padding: 6px 14px; font-size: .9rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.link { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 4px; }
.chip { display: inline-block; background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 3px 10px; font-size: .82rem; font-weight: 600; }
.chip.small { font-size: .72rem; padding: 2px 8px; }
.chip.warn { background: var(--risk-soft); color: var(--ink); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* Главная */
.hero { padding: 24px 0 8px; }
.hero h1 { max-width: 20ch; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.map-cta { margin: 4px 0 16px; }
.how { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.step span { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 700; margin-bottom: 10px; }
.step p { color: var(--ink-2); margin: 0; font-size: .95rem; }
.past { list-style: none; padding: 0; margin: 0; }
.past li { display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: center; justify-content: space-between; padding: 10px 0; border-top: 1px solid var(--line); }

/* Форма */
.field { display: grid; gap: 6px; margin-bottom: 18px; font-weight: 600; }
.field input { font: inherit; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink); }
.goals { border: 0; padding: 0; margin: 0 0 20px; display: grid; gap: 10px; }
.goals legend { font-weight: 600; margin-bottom: 8px; }
.goal { display: flex; gap: 12px; align-items: flex-start; padding: 14px; border: 1px solid var(--line); border-radius: 12px; cursor: pointer; }
.goal:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.goal input { margin-top: 4px; accent-color: var(--accent); }
.goal small { display: block; color: var(--ink-2); }

/* Вопрос */
.quiz { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 18px; align-items: start; }
.qmeta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.why { color: var(--ink-2); font-size: .9rem; min-height: 1.4em; }
.qtext { font-size: 1.45rem; margin: 10px 0 20px; }
.options { display: grid; gap: 10px; margin-bottom: 12px; }
.opt {
  display: flex; align-items: center; gap: 14px; text-align: left; padding: 14px 16px; min-height: 52px;
  border-radius: 12px; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink); font: inherit; font-size: 1.05rem; cursor: pointer;
}
.opt:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.opt .key { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--surface); border: 1px solid var(--line); font-size: .85rem; font-weight: 700; color: var(--ink-2); flex: none; }
.opt.is-ok { border-color: var(--ok); background: var(--ok-soft); }
.opt.is-bad { border-color: var(--gap); background: var(--gap-soft); }
.ok-msg { color: var(--ok); font-weight: 700; }
.bad-msg { color: var(--gap); }
.side h3 { margin-bottom: 4px; }

/* Граф */
.graph { width: 100%; height: auto; display: block; }
.edge { fill: none; stroke: var(--line); stroke-width: 2; }
.edge-bad { stroke: var(--gap); stroke-width: 3; stroke-dasharray: 6 5; }
.edge { transition: opacity .15s; }
.graph.focus .edge { opacity: .25; }
.graph.focus .edge-hl { opacity: 1; stroke: var(--accent); stroke-width: 3; }
.graph.focus .edge-bad.edge-hl { stroke: var(--gap); }
.node rect { stroke-width: 2; transition: fill .3s, stroke .3s; }
.node text { font-size: 18px; font-weight: 600; font-family: inherit; pointer-events: none; }
.n-unknown rect { fill: var(--surface-2); stroke: var(--unk); }
.n-unknown text { fill: var(--unk-ink); }
.n-mastered rect { fill: var(--ok); stroke: var(--ok); }
.n-mastered text { fill: #fff; }
.n-inferred rect { fill: var(--ok-soft); stroke: var(--inf); }
.n-inferred text { fill: var(--ink); }
.n-gap rect { fill: var(--gap-soft); stroke: var(--gap); }
.n-gap text { fill: var(--ink); }
.n-root rect { fill: var(--gap); stroke: var(--gap); stroke-width: 3; }
.n-root text { fill: #fff; }
.n-risk rect { fill: var(--risk-soft); stroke: var(--risk); stroke-dasharray: 5 4; }
.n-risk text { fill: var(--ink); }
.n-current rect { stroke: var(--accent); stroke-width: 4; animation: pulse 1.4s ease-in-out infinite; }
.root-badge { fill: var(--surface); stroke: var(--gap); stroke-width: 2; }
.root-badge-t { fill: var(--gap) !important; font-size: 14px !important; font-weight: 800 !important; }
@keyframes pulse { 50% { stroke-opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .n-current rect { animation: none; } .node rect { transition: none; } }

.legend { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .8rem; color: var(--ink-2); }
.legend li { display: flex; align-items: center; gap: 6px; }
.sw { width: 14px; height: 14px; border-radius: 4px; border: 2px solid; display: inline-block; }
.sw-mastered { background: var(--ok); border-color: var(--ok); }
.sw-inferred { background: var(--ok-soft); border-color: var(--inf); }
.sw-gap { background: var(--gap-soft); border-color: var(--gap); }
.sw-root { background: var(--gap); border-color: var(--gap); }
.sw-risk { background: var(--risk-soft); border-color: var(--risk); border-style: dashed; }
.sw-unknown { background: var(--surface-2); border-color: var(--unk); }

/* Результат */
.result-head { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 24px; align-items: end; margin-bottom: 22px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stats div { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.stats b { display: block; font-size: 1.8rem; line-height: 1; font-variant-numeric: tabular-nums; }
.stats span { font-size: .78rem; color: var(--ink-2); }
.grid2 { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 18px; align-items: start; margin-bottom: 18px; }
.grid2 > .card { margin-bottom: 0; }
.traces, .mis, .plan { padding: 0; margin: 0; list-style: none; }
.traces li { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); }
.traces li:first-child, .mis li:first-child { border-top: 0; }
.traces .bad { background: var(--gap-soft); padding: 2px 10px; border-radius: 8px; }
.traces .root { background: var(--gap); color: #fff; padding: 2px 10px; border-radius: 8px; font-weight: 600; }
.traces .arrow { color: var(--ink-2); font-size: .9rem; }
.mis li { padding: 10px 0; border-top: 1px solid var(--line); }
.mis .fix { display: block; color: var(--ink-2); font-size: .9rem; margin-top: 2px; }
.plan { counter-reset: p; }
.plan li { counter-increment: p; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0 10px 40px; border-top: 1px solid var(--line); position: relative; }
.plan li::before { content: counter(p); position: absolute; left: 0; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: .85rem; background: var(--gap-soft); color: var(--gap); }
.plan li.risk::before { background: var(--risk-soft); color: var(--ink); }
textarea { width: 100%; font: .8rem/1.4 ui-monospace, Consolas, monospace; padding: 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink); resize: vertical; margin-bottom: 10px; }

/* Урок */
.lesson .rule, .lesson .example, .lesson .traps { background: var(--surface-2); border-radius: 12px; padding: 14px 16px; margin-bottom: 12px; }
.lesson .rule { border-left: 4px solid var(--accent); }
.lesson .traps { border-left: 4px solid var(--gap); }
.lesson .traps ul { margin: 0; padding-left: 18px; }
.lesson p:last-child { margin: 0; }

/* Учитель */
.toolbar { display: flex; flex-wrap: wrap; gap: 14px 24px; align-items: center; justify-content: space-between; }
.toolbar details { flex: 1 1 320px; }
.toolbar summary { cursor: pointer; color: var(--accent); font-weight: 600; }
.toolbar details textarea { margin-top: 10px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.switch { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-weight: 600; }
.switch input { width: 18px; height: 18px; accent-color: var(--accent); }
.bars { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.bars li { display: grid; grid-template-columns: minmax(110px, 1.2fr) 2fr 28px; gap: 10px; align-items: center; font-size: .92rem; }
.bar { height: 14px; background: var(--surface-2); border-radius: 7px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--gap); border-radius: 7px; }
.val { font-variant-numeric: tabular-nums; font-weight: 700; text-align: right; }
.groups { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.group { background: var(--surface-2); border-radius: 12px; padding: 14px; border-left: 4px solid var(--gap); }
.group p { margin: 0 0 6px; }
.heat-wrap { overflow-x: auto; }
.heat { border-collapse: separate; border-spacing: 3px; font-size: .8rem; min-width: 720px; }
.heat th { font-weight: 600; color: var(--ink-2); vertical-align: bottom; height: 110px; }
.heat th span { writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }
.heat th:first-child, .heat td:first-child { text-align: left; white-space: nowrap; padding-right: 10px; height: auto; }
.heat td { width: 28px; height: 24px; border-radius: 5px; }
.c-mastered { background: var(--ok); }
.c-inferred { background: var(--ok-soft); }
.c-gap { background: var(--gap-soft); box-shadow: inset 0 0 0 2px var(--gap); }
.c-root { background: var(--gap); }
.c-risk { background: var(--risk-soft); }
.c-unknown { background: var(--surface-2); }

/* Тесты */
.tests li.pass { color: var(--ok); }
.tests li.fail { color: var(--gap); font-weight: 700; }

@media (max-width: 900px) {
  .quiz, .grid2, .result-head { grid-template-columns: minmax(0, 1fr); } /* minmax(0, …): иначе карта с min-width растягивает колонку шире экрана */
  .side { order: 2; }
}
@media (max-width: 640px) {
  .how { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  .topbar nav a { padding: 6px 8px; font-size: .9rem; }
  .card { padding: 16px; }
  .qtext { font-size: 1.25rem; }
  .stats b { font-size: 1.4rem; }
  #result-graph, #mini-graph { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  #result-graph .graph, #mini-graph .graph { min-width: 900px; }
}
.simtable { border-collapse: collapse; width: 100%; font-size: .9rem; font-variant-numeric: tabular-nums; }
.simtable th, .simtable td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.simtable th { color: var(--ink-2); font-weight: 600; }

/* ===== Tamyr Academy: обучение поверх диагностики ===== */
:root { --learn: #2f67b1; --learn-soft: #dbe7f7; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --learn: #7aa9ea; --learn-soft: #1e2d45; } }
:root[data-theme="dark"] { --learn: #7aa9ea; --learn-soft: #1e2d45; }

.brand small { font-weight: 500; color: var(--ink-2); font-size: .85rem; }
.stats b small { font-size: .55em; color: var(--ink-2); font-weight: 600; }
.banner, .note { background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 12px; padding: 12px 16px; }
.note { background: var(--risk-soft); border-color: var(--risk); font-size: .92rem; }
.row { margin-bottom: 8px; }
.btn.danger { color: var(--gap); }
.btn.danger:hover { border-color: var(--gap); }

/* Карта: новые статусы */
.n-learning rect { fill: var(--learn-soft); stroke: var(--learn); }
.n-learning text { fill: var(--ink); }
.n-solid rect { fill: var(--ok); stroke: var(--ink); stroke-width: 3; }
.n-solid text { fill: #fff; }
.n-root rect { stroke: var(--gap); stroke-width: 4; }
.n-root.n-gap rect { fill: var(--gap); }
.n-root.n-gap text { fill: #fff; }
.n-root.n-learning rect { fill: var(--learn-soft); }
.n-root.n-learning text { fill: var(--ink); }
.due-badge { fill: var(--surface); stroke: var(--risk); stroke-width: 2; }
.due-badge-t { fill: var(--ink) !important; font-size: 14px !important; font-weight: 800 !important; }
.sw-learning { background: var(--learn-soft); border-color: var(--learn); }
.sw-solid { background: var(--ok); border-color: var(--ink); }

/* План на сегодня */
.tasks { list-style: none; padding: 0; margin: 0; }
.tasks li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 0; border-top: 1px solid var(--line); }
.tasks li:first-child { border-top: 0; padding-top: 4px; }
.tasks .fix { display: block; color: var(--ink-2); font-size: .9rem; margin-top: 2px; }
.k-lesson { background: var(--gap-soft); color: var(--ink); }
.k-practice { background: var(--learn-soft); color: var(--ink); }
.k-check { background: var(--risk-soft); color: var(--ink); }
.plan li.learning::before { background: var(--learn-soft); color: var(--learn); }

/* Урок */
.worked { background: var(--surface-2); border-radius: 12px; padding: 14px 16px; margin-bottom: 12px; }
.task { font-size: 1.15rem; font-weight: 600; }
.steps { margin: 0 0 12px; padding-left: 22px; display: grid; gap: 10px; }
.steps li { padding-left: 4px; }
.steps .say { display: block; color: var(--ink-2); font-size: .92rem; }
.steps .mono { display: block; font-size: 1.02rem; }
.takeaway { border-left: 4px solid var(--accent); padding-left: 12px; font-weight: 600; margin: 0; }

/* Практика */
.pips { display: inline-flex; gap: 6px; }
.pips i { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--line); background: var(--surface-2); }
.pips i.on { background: var(--ok); border-color: var(--ok); }
.hintbox { background: var(--risk-soft); border-radius: 12px; padding: 12px 16px; margin: 4px 0 12px; }
.hintbox p { margin: 0 0 8px; }
.hintbox p:last-child, .hintbox .steps:last-child { margin-bottom: 0; }
.feedback { border-radius: 12px; padding: 14px 16px; margin: 6px 0 12px; background: var(--surface-2); border-left: 4px solid var(--gap); }
.feedback.good { border-left-color: var(--ok); }
.feedback h3 { margin-top: 12px; }
.feedback .row { margin: 12px 0 0; }
.opt:disabled { cursor: default; opacity: .75; }
.opt.is-ok, .opt.is-bad { opacity: 1; }

/* История */
.log { list-style: none; padding: 0; margin: 0; }
.log li { display: grid; grid-template-columns: 96px 1fr; gap: 10px; padding: 8px 0; border-top: 1px solid var(--line); font-size: .92rem; }
.log li:first-child { border-top: 0; }
.e-lapse b { color: var(--gap); }
.e-mastered b, .e-review b { color: var(--ok); }

@media (max-width: 640px) {
  #home-graph, #map-graph { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  #home-graph .graph, #map-graph .graph { min-width: 900px; }
  .tasks li { flex-wrap: wrap; }
  .log li { grid-template-columns: 1fr; gap: 0; }
}

/* Переключатель языка */
.lang { font: inherit; font-size: .85rem; font-weight: 600; color: var(--accent); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; margin-left: 6px; cursor: pointer; }
.lang:hover { border-color: var(--accent); background: var(--accent-soft); }
.topbar nav { align-items: center; flex-wrap: wrap; }
.e-solid b { color: var(--ok); }

/* Аккаунт */
.acct { font-size: .9rem; font-weight: 600; color: var(--accent-ink); background: var(--accent); border-radius: 999px; padding: 6px 14px; margin-left: 6px; text-decoration: none; max-width: 14ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.acct.in { color: var(--accent); background: var(--accent-soft); }
.acct.active { outline: 2px solid var(--accent); outline-offset: 2px; }
.acct[hidden] { display: none; }
.field small { font-weight: 400; }
.links { justify-content: space-between; margin-top: 14px; }
.sync { font-weight: 600; }
.sync.s-ok { color: var(--ok); }
.sync.s-error, .sync.s-offline { color: var(--gap); }