:root {
  --bg: #f4f1e8;
  --p: #fffdf7;
  --i: #1d2730;
  --m: #68727b;
  --l: #d7d1c5;
  --a: #315c74;
  --w: #9c5b31;
  --s: #ece7db;
  --g: #2f6e49;
  --r: #9a3f3f;
  --ctl: #fff;
}
:root[data-theme='dark'] {
  --bg: #111820;
  --p: #18232c;
  --i: #eef2ef;
  --m: #a9b5bb;
  --l: #ffffff29;
  --a: #72a4b9;
  --w: #cf7a4c;
  --s: #22313b;
  --g: #7fc59a;
  --r: #e28b8b;
  --ctl: #1d2a34;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--i);
  font:
    16px/1.58 Inter,
    system-ui,
    sans-serif;
}
button,
input,
select {
  font: inherit;
}
a {
  color: var(--a);
  text-underline-offset: 3px;
}
a:hover,
a:focus-visible {
  color: var(--w);
}
code {
  font-size: 0.92em;
}
[hidden] {
  display: none !important;
}
.shell {
  max-width: 1160px;
  margin: auto;
  padding: 22px;
  padding-left: max(22px, env(safe-area-inset-left));
  padding-right: max(22px, env(safe-area-inset-right));
}
header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
h1,
h2,
h3 {
  font-family: Georgia, serif;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 0.95;
  margin: 0 0 8px;
}
h2 {
  line-height: 1.08;
}
h3 {
  margin-top: 0;
}
.sub,
.small,
.intro {
  color: var(--m);
}
.badge,
.card,
.control,
.decision {
  background: var(--p);
  border: 1px solid var(--l);
  border-radius: 14px;
}
.badge {
  height: max-content;
  padding: 7px 10px;
  white-space: nowrap;
}
.topnav {
  display: flex;
  gap: 7px;
  margin: 18px 0;
  padding: 6px;
  width: max-content;
  max-width: 100%;
  overflow: auto;
  background: var(--s);
  border-radius: 12px;
}
.topnav button {
  border: 0;
  border-radius: 8px;
  padding: 9px 13px;
  min-height: 44px;
  background: transparent;
  color: var(--m);
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.topnav button.on {
  background: var(--p);
  color: var(--i);
}
.topnav button:focus-visible {
  outline: 3px solid var(--a);
  outline-offset: 2px;
}
.view {
  display: none;
}
.view.on {
  display: block;
}
.toolbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}
.control {
  padding: 11px;
}
.control label,
.control-label {
  display: block;
  font-size: 0.74rem;
  color: var(--m);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
select,
.control button,
input {
  width: 100%;
  padding: 9px;
  border: 1px solid var(--l);
  border-radius: 8px;
  background: var(--ctl);
  color: var(--i);
}
.control button,
.primary {
  background: var(--a) !important;
  color: #fff !important;
  font-weight: 700;
}
button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}
.dash {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 12px;
  align-items: start;
}
.quiz,
.side,
.guide {
  padding: 20px;
}
.side {
  position: sticky;
  top: 12px;
}
.meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--m);
  font-size: 0.85rem;
}
.question-set {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}
.question {
  font:
    1.4rem/1.25 Georgia,
    serif;
  margin: 20px 0;
  padding: 0;
  color: var(--i);
}
.choice {
  display: block;
  padding: 12px;
  margin: 8px 0;
  border: 1px solid var(--l);
  border-radius: 10px;
  background: var(--ctl);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.choice input {
  width: auto;
  padding: 0;
}
.choice.sel {
  border-color: var(--a);
}
.choice.good {
  border-color: var(--g);
  background: color-mix(in srgb, var(--g) 14%, var(--p));
}
.choice.bad {
  border-color: var(--r);
  background: color-mix(in srgb, var(--r) 14%, var(--p));
}
.actions {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.actions button {
  padding: 9px 13px;
  min-height: 44px;
  border: 1px solid var(--l);
  border-radius: 8px;
  background: var(--ctl);
  color: var(--i);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.control button {
  min-height: 44px;
}
.link-btn {
  padding: 0;
  min-height: 0;
  border: 0;
  background: transparent;
  color: var(--a);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.io-panel {
  margin-top: 12px;
}
.io-panel textarea {
  width: 100%;
  margin-top: 6px;
  padding: 9px;
  font-size: 16px;
  line-height: 1.4;
  border: 1px solid var(--l);
  border-radius: 8px;
  background: var(--ctl);
  color: var(--i);
  resize: vertical;
}
.feedback {
  display: none;
  margin-top: 14px;
  padding: 12px;
  border-radius: 9px;
}
.feedback.show {
  display: block;
  background: var(--s);
}
.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.track-stats {
  margin-top: 8px;
}
.stat {
  background: var(--s);
  padding: 10px;
  border-radius: 9px;
}
.stat strong {
  display: block;
  font-size: 1.35rem;
}
.bars {
  margin-top: 14px;
  font-size: 0.8rem;
}
.bar {
  display: grid;
  grid-template-columns: 95px 1fr 38px;
  gap: 6px;
  align-items: center;
  margin: 7px 0;
}
.track {
  height: 6px;
  background: var(--s);
  border-radius: 8px;
  overflow: hidden;
}
.track i {
  display: block;
  height: 100%;
  background: var(--w);
}
.guide {
  max-width: 1000px;
  margin: auto;
}
.guide h2 {
  margin: 38px 0 12px;
  padding-top: 12px;
  border-top: 1px solid var(--l);
  scroll-margin-top: 16px;
}
.guide p,
.guide li {
  color: var(--m);
}
.callout,
.applied,
.exercise {
  padding: 14px 16px;
  margin: 16px 0;
  border-radius: 10px;
  background: var(--s);
}
.callout {
  border-left: 5px solid var(--a);
}
.applied {
  border-left: 5px solid var(--g);
}
.exercise {
  border-left: 5px solid var(--w);
}
.sources {
  font-size: 0.9rem;
}
.table {
  overflow: auto;
  border: 1px solid var(--l);
  border-radius: 10px;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}
th,
td {
  padding: 10px;
  border-bottom: 1px solid var(--l);
  text-align: left;
  vertical-align: top;
}
th {
  background: var(--s);
}
pre {
  overflow: auto;
  padding: 13px;
  border-radius: 9px;
  background: #0b1117;
  color: #eef2ef;
  line-height: 1.45;
}
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin: 18px 0;
}
.node {
  position: relative;
  display: grid;
  place-items: center;
  text-align: center;
  min-height: 90px;
  padding: 12px;
  border: 1px solid var(--l);
  border-radius: 12px;
  background: var(--p);
}
.node:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -22px;
  color: var(--a);
  font-size: 1.4rem;
}
.decision-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.decision {
  padding: 16px;
}
.decision p {
  margin-bottom: 0;
}
.decision-tag,
.card-kind {
  display: inline-flex;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--s);
  color: var(--m);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.decision-tag.selected {
  color: var(--g);
}
.decision-tag.leading {
  color: var(--w);
}
.decision-tag.optional {
  color: var(--a);
}
.flash-controls {
  max-width: 320px;
  margin-bottom: 12px;
}
.flash {
  min-height: 390px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 28px;
}
.flash h2 {
  font-size: 1.8rem;
}
.answer {
  display: none;
  background: var(--s);
  padding: 15px;
  border-radius: 10px;
  text-align: left;
}
.answer.on {
  display: block;
}
.card-source {
  display: none;
  font-size: 0.88rem;
}
.card-source.on {
  display: block;
}
.reference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.reference-grid section {
  padding: 16px;
  border: 1px solid var(--l);
  border-radius: 12px;
  background: var(--p);
}
.reference-grid section h2 {
  margin: 0 0 10px;
  padding: 0;
  border: 0;
  font-size: 1.35rem;
}
.reference-grid ul {
  margin: 0;
  padding-left: 20px;
}
.reference-grid li {
  margin: 6px 0;
}
@media (max-width: 850px) {
  header {
    display: block;
  }
  .badge {
    display: inline-block;
    margin-top: 10px;
  }
  .toolbar {
    grid-template-columns: 1fr 1fr;
  }
  .dash,
  .decision-grid,
  .reference-grid {
    grid-template-columns: 1fr;
  }
  .side {
    position: static;
  }
  .flow {
    grid-template-columns: 1fr;
  }
  .node:not(:last-child)::after {
    content: '↓';
    right: auto;
    bottom: -26px;
  }
}
@media (max-width: 520px) {
  .shell {
    padding: 13px;
    padding-left: max(13px, env(safe-area-inset-left));
    padding-right: max(13px, env(safe-area-inset-right));
  }
  .toolbar {
    grid-template-columns: 1fr;
  }
  .stats {
    grid-template-columns: 1fr;
  }
  .bar {
    grid-template-columns: 82px 1fr 34px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}