:root {
  color-scheme: light;
  --brain-bg: #f3f4f6;
  --brain-surface: rgba(255, 255, 255, 0.9);
  --brain-panel: rgba(255, 255, 255, 0.94);
  --brain-line: rgba(15, 23, 42, 0.07);
  --brain-line-strong: rgba(15, 23, 42, 0.11);
  --brain-ink: #20242c;
  --brain-muted: #6a7280;
  --brain-accent: #64b5f6;
  --brain-accent-strong: #1776cc;
  --brain-correct: #11a36a;
  --brain-wrong: #cf375f;
  --brain-shadow: none;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Google Sans", "Noto Sans", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--brain-ink);
  background-color: var(--brain-bg);
  background-image: none;
}

button,
input {
  font: inherit;
}

[hidden] {
  display: none !important;
}

.openmind-shell {
  min-height: 100vh;
  width: min(100%, 430px);
  margin: 0 auto;
  padding: 16px 12px 28px;
}

.openmind-lang-toggle {
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--brain-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: none;
  backdrop-filter: blur(18px);
  margin: 0 auto;
}

.openmind-lang-btn {
  min-width: 46px;
  height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    background-color 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease;
}

.openmind-lang-btn.is-active {
  background: rgba(231, 243, 255, 0.96);
  color: var(--brain-accent-strong);
  border: 1px solid rgba(23, 118, 204, 0.18);
}

.openmind-content {
  width: 100%;
}

.openmind-sidebar-card,
.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card {
  border: 1px solid var(--brain-line);
  border-radius: 28px;
  background: var(--brain-surface);
  box-shadow: none;
  backdrop-filter: blur(18px);
}

.openmind-eyebrow {
  margin: 0 0 12px;
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.openmind-hero h2,
.openmind-result-head h3,
.openmind-summary-card h3 {
  margin: 0;
  letter-spacing: -0.05em;
}

.openmind-hero p,
.openmind-result-copy,
.openmind-summary-card p {
  margin: 14px 0 0;
  color: #5f6775;
  font-size: 16px;
  line-height: 1.6;
}

.openmind-content-card {
  width: 100%;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--brain-line);
  border-radius: 24px;
  background: var(--brain-surface);
  box-shadow: none;
  backdrop-filter: blur(18px);
}

.openmind-chip,
.openmind-mini-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
}

.openmind-button,
.openmind-ghost,
.openmind-option,
.openmind-nav-btn {
  cursor: pointer;
}

.openmind-button:disabled,
.openmind-ghost:disabled {
  cursor: not-allowed;
  opacity: 0.58;
  box-shadow: none;
}

.openmind-button,
.openmind-ghost {
  min-height: 48px;
  border-radius: 999px;
  font-weight: 700;
}

.openmind-button {
  border: 0;
  background: #1776cc;
  color: #fff;
  box-shadow: none;
}

.openmind-button:hover {
  filter: brightness(1.02);
}

.openmind-ghost {
  border: 1px solid var(--brain-line-strong);
  background: rgba(255, 255, 255, 0.88);
  color: var(--brain-ink);
  padding: 0 16px;
}

.quiz-shell {
  display: grid;
  gap: 16px;
}

.quiz-section-header {
  display: grid;
  gap: 10px;
}

.quiz-section-title {
  margin: 0;
  font-size: clamp(26px, 7vw, 34px);
  line-height: 1;
  letter-spacing: -0.05em;
}

.quiz-section-desc,
.quiz-q-text,
.quiz-answer-text,
.quiz-complete-text,
.explain-step div,
.quiz-explanation {
  color: #5f6775;
  line-height: 1.7;
}

.quiz-section-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.quiz-section-chip {
  display: inline-grid;
  gap: 4px;
  min-width: 108px;
  padding: 12px 14px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--brain-muted);
  text-align: left;
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease,
    box-shadow 160ms ease,
    color 160ms ease;
}

.quiz-section-chip:hover {
  transform: translateY(-1px);
  border-color: rgba(23, 118, 204, 0.16);
}

.quiz-section-chip-label {
  font-size: 13px;
  font-weight: 800;
}

.quiz-section-chip-meta {
  font-size: 12px;
  font-weight: 700;
  opacity: 0.78;
}

.quiz-section-chip.is-started {
  border-color: rgba(17, 163, 106, 0.18);
  background: rgba(244, 255, 249, 0.96);
  color: #0f8d5e;
}

.quiz-section-chip.is-current {
  border-color: rgba(23, 118, 204, 0.2);
  background: rgba(231, 243, 255, 0.96);
  color: var(--brain-accent-strong);
}

.quiz-progress-wrap {
  display: grid;
  gap: 10px;
}

.quiz-progress-bar-track {
  overflow: hidden;
  height: 12px;
  border-radius: 999px;
  background: rgba(191, 219, 254, 0.36);
}

.quiz-progress-bar-fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: #5ab0f5;
  transition: width 220ms ease;
}

.quiz-progress-text,
.quiz-q-num {
  color: var(--brain-muted);
  font-size: 13px;
  font-weight: 700;
}

.quiz-jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.quiz-jump-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--brain-muted);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease;
}

.quiz-jump-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(23, 118, 204, 0.16);
}

.quiz-jump-btn.is-completed {
  border-color: rgba(17, 163, 106, 0.2);
  background: rgba(236, 253, 245, 0.96);
  color: var(--brain-correct);
}

.quiz-jump-btn.is-current {
  border-color: rgba(23, 118, 204, 0.2);
  background: rgba(231, 243, 255, 0.96);
  color: var(--brain-accent-strong);
}

.quiz-jump-btn.is-current.is-completed {
  border-color: rgba(17, 163, 106, 0.28);
  background: rgba(220, 252, 231, 0.92);
  color: #0f8d5e;
}

.quiz-question-block,
.quiz-answer-block {
  padding: 18px;
  border: 1px solid var(--brain-line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
}

.quiz-q-header {
  display: grid;
  gap: 10px;
}

.quiz-q-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.quiz-q-difficulty {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.quiz-q-stars {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.quiz-q-stars .star {
  color: rgba(245, 158, 11, 0.24);
}

.quiz-q-stars .star.filled {
  color: #f59e0b;
  letter-spacing: 0.12em;
}

.quiz-q-title {
  margin: 0;
  font-size: clamp(22px, 6vw, 28px);
  letter-spacing: -0.04em;
}

.quiz-diagram-wrap {
  margin: 18px 0;
  padding: 14px;
  border: 1px solid var(--brain-line);
  border-radius: 18px;
  background: rgba(248, 250, 252, 0.94);
}

.quiz-diagram {
  display: block;
  width: 100%;
  height: auto;
}

.quiz-pixel-scene {
  margin: 18px 0;
  padding: 10px;
  border: 2px solid var(--brain-line-strong);
  background: #fcfdff;
}

.quiz-pixel-scene.has-mosaic {
  padding: 0;
  border: 0;
  background: transparent;
}

.pixel-scene-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(18, 1fr);
  grid-template-rows: repeat(12, 1fr);
  width: 100%;
  min-height: 148px;
  border: 2px dashed rgba(23, 118, 204, 0.34);
  background:
    linear-gradient(rgba(23, 118, 204, 0.08) 2px, transparent 2px),
    linear-gradient(90deg, rgba(23, 118, 204, 0.08) 2px, transparent 2px),
    #f8fbff;
  background-size: 10px 10px;
  overflow: hidden;
}

.quiz-pixel-scene.has-mosaic .pixel-scene-grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  grid-template-rows: repeat(var(--rows), minmax(0, 1fr));
  gap: 1px;
  place-items: stretch;
  aspect-ratio: var(--cols) / var(--rows);
  min-height: 0;
  padding: 0;
  border: 2px solid #1d35c9;
  background: rgba(15, 23, 42, 0.1);
}

.pixel-art-cell {
  width: 100%;
  height: 100%;
  background: #ffffff;
}

.pixel-art-cell.b { background: #1d35c9; }
.pixel-art-cell.r { background: #f01820; }
.pixel-art-cell.y { background: #ffd84d; }
.pixel-art-cell.s { background: #ffffff; }
.pixel-art-cell.w { background: #ffffff; }
.pixel-art-cell.c { background: #111111; }
.pixel-art-cell.t { background: #c98d4f; }
.pixel-art-cell.p { background: #84bfff; }
.pixel-art-cell.d { background: #0f4d8f; }
.pixel-art-cell.g { background: #9ca3af; }
.pixel-art-cell.o { background: #ff9f1c; }

.quiz-pixel-scene.has-mosaic .pixel-art-cell.y,
.quiz-pixel-scene.has-mosaic .pixel-art-cell.r,
.quiz-pixel-scene.has-mosaic .pixel-art-cell.o,
.quiz-pixel-scene.villagers .pixel-art-cell.r,
.quiz-pixel-scene.villagers .pixel-art-cell.b,
.quiz-pixel-scene.seasoning .pixel-art-cell.r,
.quiz-pixel-scene.seasoning .pixel-art-cell.g,
.quiz-pixel-scene.rps .pixel-art-cell.r,
.quiz-pixel-scene.rps .pixel-art-cell.b,
.quiz-pixel-scene.calendar .pixel-art-cell.r,
.quiz-pixel-scene.calendar .pixel-art-cell.g,
.quiz-pixel-scene.pingpong .pixel-art-cell.r,
.quiz-pixel-scene.pingpong .pixel-art-cell.b,
.quiz-pixel-scene.heaven-road .pixel-art-cell.r,
.quiz-pixel-scene.two-hats .pixel-art-cell.r,
.quiz-pixel-scene.two-hats .pixel-art-cell.b,
.quiz-pixel-scene.three-hats .pixel-art-cell.r,
.quiz-pixel-scene.three-hats .pixel-art-cell.b,
.quiz-pixel-scene.cat-boxes .pixel-art-cell.r,
.quiz-pixel-scene.stairway .pixel-art-cell.b,
.quiz-pixel-scene.notebook-sticker .pixel-art-cell.r,
.quiz-pixel-scene.bakers .pixel-art-cell.c,
.quiz-pixel-scene.bottles .pixel-art-cell.p {
  animation: pixel-art-twinkle 1400ms steps(2, end) infinite;
  animation-delay: calc((var(--row) + var(--col)) * 35ms);
}

@keyframes pixel-art-float {
  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(2px, -2px);
  }
}

@keyframes pixel-art-twinkle {
  0%,
  100% {
    filter: brightness(1);
  }

  50% {
    filter: brightness(1.18);
  }
}

.pixel-scene-tile {
  opacity: 0.36;
  background: transparent;
}

.tile-3,
.tile-8,
.tile-14,
.tile-19 {
  background: #dff1ff;
}

.tile-5,
.tile-12,
.tile-16,
.tile-22 {
  background: #eef6ff;
}

.pixel-scene-piece {
  position: absolute;
  display: block;
  width: 28px;
  height: 28px;
  background: var(--brain-accent);
  box-shadow: 4px 4px 0 var(--brain-accent-strong);
  image-rendering: pixelated;
}

.pixel-scene-piece::before,
.pixel-scene-piece::after {
  content: "";
  position: absolute;
  display: block;
  background: #ffffff;
}

.piece-1 { left: 14%; top: 22%; }
.piece-2 { left: 42%; top: 16%; }
.piece-3 { right: 14%; top: 24%; }
.piece-4 { left: 20%; bottom: 18%; }
.piece-5 { left: 46%; bottom: 24%; }
.piece-6 { right: 18%; bottom: 16%; }
.piece-7 { left: 50%; top: 45%; width: 58px; height: 8px; }
.piece-8 { left: 30%; top: 48%; width: 8px; height: 46px; }

.quiz-pixel-scene.people .piece-1,
.quiz-pixel-scene.people .piece-2,
.quiz-pixel-scene.people .piece-3 {
  width: 24px;
  height: 36px;
  background: var(--brain-accent-strong);
}

.quiz-pixel-scene.people .piece-1::before,
.quiz-pixel-scene.people .piece-2::before,
.quiz-pixel-scene.people .piece-3::before {
  width: 16px;
  height: 12px;
  left: 4px;
  top: -12px;
  background: #ffffff;
  box-shadow: 0 0 0 2px var(--brain-accent-strong);
}

.quiz-pixel-scene.path .piece-4,
.quiz-pixel-scene.path .piece-5,
.quiz-pixel-scene.path .piece-6 {
  width: 58px;
  height: 12px;
  background: #ffffff;
  transform: skewY(-18deg);
}

.quiz-pixel-scene.path .piece-1 {
  width: 30px;
  height: 46px;
  left: 45%;
  top: 18%;
}

.quiz-pixel-scene.money .piece-1,
.quiz-pixel-scene.money .piece-2,
.quiz-pixel-scene.money .piece-3,
.quiz-pixel-scene.money .piece-4 {
  width: 34px;
  height: 34px;
  border: 4px solid #ffffff;
  background: var(--brain-accent-strong);
}

.quiz-pixel-scene.cards .piece-1,
.quiz-pixel-scene.cards .piece-2,
.quiz-pixel-scene.cards .piece-3 {
  width: 38px;
  height: 52px;
  background: #ffffff;
  box-shadow: 4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene.cards .piece-1::before,
.quiz-pixel-scene.cards .piece-2::before,
.quiz-pixel-scene.cards .piece-3::before {
  width: 18px;
  height: 18px;
  left: 10px;
  top: 16px;
  background: var(--brain-accent);
}

.quiz-pixel-scene.objects .piece-1,
.quiz-pixel-scene.objects .piece-2,
.quiz-pixel-scene.objects .piece-3,
.quiz-pixel-scene.objects .piece-4 {
  width: 42px;
  height: 34px;
  background: #ffffff;
  box-shadow:
    inset 0 -10px 0 #dff1ff,
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene.numbers .piece-1,
.quiz-pixel-scene.numbers .piece-2,
.quiz-pixel-scene.numbers .piece-3,
.quiz-pixel-scene.numbers .piece-4,
.quiz-pixel-scene.abstract .piece-1,
.quiz-pixel-scene.abstract .piece-2,
.quiz-pixel-scene.abstract .piece-3 {
  width: 38px;
  height: 38px;
  background: #ffffff;
  box-shadow:
    inset 10px 0 0 var(--brain-accent),
    inset -10px 0 0 #dff1ff,
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene.scene-1 .piece-5,
.quiz-pixel-scene.scene-3 .piece-6,
.quiz-pixel-scene.scene-5 .piece-7 {
  background: #ffffff;
}

.quiz-pixel-scene[class*="card"] .piece-1,
.quiz-pixel-scene[class*="card"] .piece-2,
.quiz-pixel-scene[class*="card"] .piece-3,
.quiz-pixel-scene[class*="card"] .piece-4,
.quiz-pixel-scene[class*="stamp"] .piece-1,
.quiz-pixel-scene[class*="stamp"] .piece-2,
.quiz-pixel-scene[class*="stamp"] .piece-3,
.quiz-pixel-scene[class*="stamp"] .piece-4,
.quiz-pixel-scene[class*="sticker"] .piece-1,
.quiz-pixel-scene[class*="sticker"] .piece-2,
.quiz-pixel-scene[class*="sticker"] .piece-3,
.quiz-pixel-scene[class*="sticker"] .piece-4 {
  width: 34px;
  height: 46px;
  background: #ffffff;
  box-shadow: inset 0 0 0 8px #dff1ff, 4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="coin"] .piece-1,
.quiz-pixel-scene[class*="coin"] .piece-2,
.quiz-pixel-scene[class*="coin"] .piece-3,
.quiz-pixel-scene[class*="coin"] .piece-4,
.quiz-pixel-scene[class*="money"] .piece-1,
.quiz-pixel-scene[class*="money"] .piece-2,
.quiz-pixel-scene[class*="salary"] .piece-1,
.quiz-pixel-scene[class*="salary"] .piece-2,
.quiz-pixel-scene[class*="banknotes"] .piece-1,
.quiz-pixel-scene[class*="banknotes"] .piece-2 {
  width: 30px;
  height: 30px;
  border: 6px solid #ffffff;
  background: var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="horse"] .piece-1,
.quiz-pixel-scene[class*="horse"] .piece-2,
.quiz-pixel-scene[class*="race"] .piece-1,
.quiz-pixel-scene[class*="race"] .piece-2,
.quiz-pixel-scene.runner .piece-1,
.quiz-pixel-scene.runner .piece-2 {
  width: 46px;
  height: 20px;
  background: var(--brain-accent-strong);
  box-shadow:
    8px 18px 0 #ffffff,
    28px 18px 0 #ffffff,
    4px 4px 0 #0f3674;
}

.quiz-pixel-scene[class*="boat"] .piece-1,
.quiz-pixel-scene[class*="ship"] .piece-1,
.quiz-pixel-scene[class*="boat"] .piece-2,
.quiz-pixel-scene[class*="ship"] .piece-2 {
  width: 54px;
  height: 18px;
  background: #ffffff;
  box-shadow: inset 12px -8px 0 var(--brain-accent), 4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="box"] .piece-1,
.quiz-pixel-scene[class*="box"] .piece-2,
.quiz-pixel-scene[class*="products"] .piece-1,
.quiz-pixel-scene[class*="products"] .piece-2,
.quiz-pixel-scene[class*="restaurant"] .piece-1,
.quiz-pixel-scene[class*="restaurant"] .piece-2 {
  width: 42px;
  height: 34px;
  background: #ffffff;
  box-shadow:
    inset 0 -10px 0 #dff1ff,
    inset 10px 0 0 rgba(23, 118, 204, 0.24),
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="path"] .piece-4,
.quiz-pixel-scene[class*="road"] .piece-4,
.quiz-pixel-scene[class*="stair"] .piece-4 {
  left: 8%;
  top: 58%;
  width: 82px;
  height: 12px;
  background: #ffffff;
  transform: skewY(-16deg);
}

.quiz-pixel-scene[class*="path"] .piece-5,
.quiz-pixel-scene[class*="road"] .piece-5,
.quiz-pixel-scene[class*="stair"] .piece-5 {
  left: 52%;
  top: 58%;
  width: 82px;
  height: 12px;
  background: #ffffff;
  transform: skewY(16deg);
}

.quiz-pixel-scene[class*="hat"] .piece-1,
.quiz-pixel-scene[class*="hat"] .piece-2,
.quiz-pixel-scene[class*="hat"] .piece-3,
.quiz-pixel-scene[class*="people"] .piece-1,
.quiz-pixel-scene[class*="people"] .piece-2,
.quiz-pixel-scene[class*="villagers"] .piece-1,
.quiz-pixel-scene[class*="villagers"] .piece-2,
.quiz-pixel-scene[class*="villagers"] .piece-3,
.quiz-pixel-scene[class*="suspects"] .piece-1,
.quiz-pixel-scene[class*="suspects"] .piece-2,
.quiz-pixel-scene[class*="suspects"] .piece-3 {
  width: 24px;
  height: 36px;
  background: var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="hat"] .piece-1::before,
.quiz-pixel-scene[class*="hat"] .piece-2::before,
.quiz-pixel-scene[class*="hat"] .piece-3::before,
.quiz-pixel-scene[class*="people"] .piece-1::before,
.quiz-pixel-scene[class*="people"] .piece-2::before,
.quiz-pixel-scene[class*="villagers"] .piece-1::before,
.quiz-pixel-scene[class*="villagers"] .piece-2::before,
.quiz-pixel-scene[class*="villagers"] .piece-3::before {
  width: 18px;
  height: 10px;
  left: 3px;
  top: -12px;
  background: #ffffff;
  box-shadow: 0 -8px 0 var(--brain-accent);
}

.quiz-pixel-scene[class*="number"] .piece-1,
.quiz-pixel-scene[class*="number"] .piece-2,
.quiz-pixel-scene[class*="code"] .piece-1,
.quiz-pixel-scene[class*="code"] .piece-2,
.quiz-pixel-scene[class*="ages"] .piece-1,
.quiz-pixel-scene[class*="ages"] .piece-2 {
  width: 46px;
  height: 42px;
  background: #ffffff;
  box-shadow:
    inset 8px 0 0 var(--brain-accent),
    inset -8px 0 0 #dff1ff,
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="rope"] .piece-1,
.quiz-pixel-scene[class*="rope"] .piece-2,
.quiz-pixel-scene[class*="lock"] .piece-1,
.quiz-pixel-scene[class*="lock"] .piece-2 {
  width: 74px;
  height: 10px;
  background: #ffffff;
  box-shadow: 0 14px 0 #dff1ff, 4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="plane"] .piece-1 {
  width: 76px;
  height: 14px;
  background: #ffffff;
  box-shadow:
    26px -16px 0 -2px #dff1ff,
    26px 16px 0 -2px #dff1ff,
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="bakers"] .piece-1,
.quiz-pixel-scene[class*="cookie"] .piece-1,
.quiz-pixel-scene[class*="apples"] .piece-1,
.quiz-pixel-scene[class*="fruit"] .piece-1 {
  width: 84px;
  height: 42px;
  background: #ffffff;
  box-shadow:
    inset 12px 12px 0 var(--brain-accent),
    inset 36px 12px 0 #dff1ff,
    inset 60px 12px 0 var(--brain-accent-strong),
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="bottles"] .piece-1,
.quiz-pixel-scene[class*="bottles"] .piece-2,
.quiz-pixel-scene[class*="bottles"] .piece-3 {
  width: 18px;
  height: 52px;
  background: #ffffff;
  box-shadow: inset 0 14px 0 #dff1ff, 4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="notebook"] .piece-1 {
  width: 72px;
  height: 54px;
  background: #ffffff;
  box-shadow:
    inset 12px 0 0 #dff1ff,
    inset 0 14px 0 rgba(23, 118, 204, 0.14),
    inset 0 28px 0 rgba(23, 118, 204, 0.08),
    4px 4px 0 var(--brain-accent-strong);
}

.quiz-pixel-scene[class*="dragon"] .piece-1,
.quiz-pixel-scene[class*="bear"] .piece-1,
.quiz-pixel-scene[class*="cow"] .piece-1 {
  width: 64px;
  height: 38px;
  background: var(--brain-accent-strong);
  box-shadow:
    48px 10px 0 -8px #ffffff,
    10px 34px 0 -6px #ffffff,
    40px 34px 0 -6px #ffffff,
    4px 4px 0 #0f3674;
}

.quiz-q-text ul,
.quiz-explanation ul {
  margin: 10px 0;
  padding-left: 18px;
}

.quiz-choice-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.quiz-choice {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--brain-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--brain-ink);
  text-align: left;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease;
}

.quiz-choice:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: rgba(23, 118, 204, 0.16);
}

.quiz-choice:disabled {
  cursor: default;
  opacity: 1;
}

.quiz-choice-badge {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: rgba(226, 232, 240, 0.9);
  color: var(--brain-accent-strong);
  font-size: 13px;
  font-weight: 800;
}

.quiz-choice-text {
  font-size: 14px;
  line-height: 1.5;
}

.quiz-choice.is-selected {
  border-color: rgba(23, 118, 204, 0.18);
  background: rgba(231, 243, 255, 0.96);
}

.quiz-choice.is-selected .quiz-choice-badge {
  background: rgba(100, 181, 246, 0.18);
}

.quiz-choice.is-correct {
  border-color: rgba(17, 163, 106, 0.28);
  background: rgba(236, 253, 245, 0.94);
}

.quiz-choice.is-correct .quiz-choice-badge {
  background: rgba(17, 163, 106, 0.16);
  color: var(--brain-correct);
}

.quiz-choice.is-wrong {
  border-color: rgba(207, 55, 95, 0.28);
  background: rgba(255, 241, 244, 0.96);
}

.quiz-choice.is-wrong .quiz-choice-badge {
  background: rgba(207, 55, 95, 0.14);
  color: var(--brain-wrong);
}

.quiz-feedback {
  display: grid;
}

.quiz-feedback-card {
  padding: 16px;
  border-radius: 20px;
  border: 1px solid var(--brain-line);
  background: rgba(255, 255, 255, 0.84);
}

.quiz-feedback-card.is-correct {
  border-color: rgba(17, 163, 106, 0.24);
  background: rgba(236, 253, 245, 0.9);
}

.quiz-feedback-card.is-wrong {
  border-color: rgba(207, 55, 95, 0.22);
  background: rgba(255, 244, 246, 0.92);
}

.quiz-feedback-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.quiz-feedback-copy {
  margin: 8px 0 0;
  color: #5f6775;
  font-size: 14px;
  line-height: 1.6;
}

.quiz-score-feedback {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(11, 16, 32, 0.08);
  background: rgba(255, 255, 255, 0.7);
}

.quiz-score-feedback p {
  margin: 0;
  color: #4d5868;
  font-size: 13px;
  line-height: 1.45;
}

.quiz-score-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.quiz-score-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid rgba(17, 163, 106, 0.24);
  background: rgba(236, 253, 245, 0.95);
  color: var(--brain-correct);
  font-size: 12px;
  font-weight: 800;
}

.quiz-score-pill.is-empty {
  border-color: rgba(207, 55, 95, 0.18);
  background: rgba(255, 244, 246, 0.95);
  color: var(--brain-wrong);
}

.quiz-feedback-rows {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.quiz-feedback-row {
  display: grid;
  gap: 6px;
}

.quiz-feedback-label {
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.quiz-feedback-value {
  color: var(--brain-ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.quiz-answer-box {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(17, 163, 106, 0.2);
  background: rgba(236, 253, 245, 0.86);
}

.quiz-answer-label {
  color: var(--brain-correct);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.quiz-answer-text {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--brain-ink);
}

.quiz-explanation {
  margin-top: 18px;
}

.quiz-explanation-title {
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.quiz-complete-nav {
  display: grid;
  gap: 12px;
  margin: 8px 0 2px;
}

.quiz-complete-nav-label {
  margin: 0;
  color: var(--brain-muted);
  font-size: 13px;
  font-weight: 700;
}

.quiz-result-summary {
  display: grid;
  gap: 14px;
  width: min(100%, 620px);
  margin: 8px auto 2px;
  padding: 16px;
  border: 2px solid #0b1020;
  background: #ffffff;
  box-shadow: 4px 4px 0 #0b1020;
}

.quiz-result-score {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.quiz-result-score span,
.quiz-result-stats,
.quiz-result-dimension span {
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.quiz-result-score strong {
  color: var(--brain-accent-strong);
  font-size: 36px;
  line-height: 1;
}

.quiz-result-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quiz-result-dimensions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.quiz-result-dimension {
  display: grid;
  gap: 6px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--brain-line);
  background: rgba(247, 250, 252, 0.88);
}

.quiz-result-dimension strong {
  color: var(--brain-ink);
  font-size: 22px;
  line-height: 1;
}

.quiz-result-insight {
  margin: 0;
  color: #4d5868;
  font-size: 14px;
  line-height: 1.45;
}

.explain-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--brain-line);
}

.explain-step:first-of-type {
  border-top: 0;
}

.step-num {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(191, 219, 254, 0.44);
  color: var(--brain-accent-strong);
  font-size: 14px;
  font-weight: 800;
}

.explain-table {
  width: 100%;
  margin-top: 10px;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 16px;
}

.explain-table th,
.explain-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--brain-line);
  text-align: left;
  vertical-align: top;
}

.explain-table th {
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.quiz-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: flex-start;
}

.quiz-btn-secondary {
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--brain-line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--brain-ink);
  cursor: pointer;
}

.quiz-btn-reveal,
.quiz-btn-next {
  padding: 0 18px;
}

.quiz-actions > * {
  width: 100%;
}

.explain-table {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.quiz-complete {
  display: grid;
  gap: 12px;
  justify-items: center;
  text-align: center;
  padding: 24px 8px;
}

.quiz-complete-icon {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border-radius: 24px;
  background: rgba(191, 219, 254, 0.4);
  font-size: 34px;
}

.pixel-brain-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background: var(--brain-accent);
  box-shadow:
    4px 0 0 var(--brain-accent),
    8px 0 0 var(--brain-accent-strong),
    -4px 4px 0 #9fd4ff,
    0 4px 0 var(--brain-accent),
    4px 4px 0 var(--brain-accent-strong),
    8px 4px 0 var(--brain-accent),
    12px 4px 0 #9fd4ff,
    -4px 8px 0 var(--brain-accent),
    0 8px 0 var(--brain-accent-strong),
    4px 8px 0 var(--brain-accent),
    8px 8px 0 #9fd4ff,
    0 12px 0 var(--brain-accent),
    4px 12px 0 var(--brain-accent-strong),
    8px 12px 0 var(--brain-accent);
  image-rendering: pixelated;
}

.openmind-app {
  display: grid;
  gap: 24px;
}

.openmind-hero {
  padding: 30px;
  border: 1px solid var(--brain-line);
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--brain-shadow);
}

.openmind-hero {
  display: grid;
  gap: 24px;
}

.openmind-hero h2 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 0.95;
}

.openmind-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.openmind-stat {
  padding: 18px 20px;
  border: 1px solid var(--brain-line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.72);
}

.openmind-stat-label {
  display: block;
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.openmind-stat strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  letter-spacing: -0.05em;
}

.openmind-progress {
  display: grid;
  gap: 10px;
}

.openmind-progress-bar {
  overflow: hidden;
  height: 14px;
  border-radius: 999px;
  background: rgba(191, 219, 254, 0.38);
}

.openmind-progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: #5ab0f5;
  transition: width 220ms ease;
}

.openmind-progress-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--brain-muted);
  font-size: 14px;
}

.openmind-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.openmind-sidebar {
  display: grid;
  gap: 18px;
  position: sticky;
  top: 16px;
}

.openmind-sidebar-card {
  padding: 22px;
}

.openmind-sidebar-head,
.openmind-question-head,
.openmind-result-head,
.openmind-step-head,
.openmind-summary-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.openmind-sidebar-head h3,
.openmind-sidebar-card h3,
.openmind-summary-card h3 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.openmind-sidebar-head span {
  color: var(--brain-muted);
  font-size: 13px;
}

.openmind-chapter-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.openmind-nav-btn {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--brain-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.openmind-nav-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(23, 118, 204, 0.16);
}

.openmind-nav-btn.is-active {
  border-color: rgba(23, 118, 204, 0.2);
  background: rgba(231, 243, 255, 0.96);
}

.openmind-nav-btn.is-correct {
  border-color: rgba(17, 163, 106, 0.32);
}

.openmind-nav-btn.is-wrong {
  border-color: rgba(207, 55, 95, 0.24);
}

.openmind-nav-btn strong {
  font-size: 15px;
}

.openmind-nav-btn span {
  color: var(--brain-muted);
  font-size: 12px;
}

.openmind-rule-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: #5f6775;
  line-height: 1.7;
}

.openmind-stage {
  display: grid;
  gap: 18px;
}

.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card {
  padding: 26px;
}

.openmind-question-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.openmind-chip {
  min-height: 32px;
  padding: 8px 12px;
  border: 1px solid var(--brain-line);
  background: rgba(255, 255, 255, 0.74);
  color: #4f5968;
  font-size: 13px;
  font-weight: 700;
}

.openmind-question-title {
  margin: 18px 0 0;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  letter-spacing: -0.05em;
}

.openmind-question-copy {
  margin: 14px 0 0;
  color: #5f6775;
  font-size: 17px;
  line-height: 1.65;
}

.openmind-prompt {
  margin-top: 22px;
  padding: 18px 18px 0;
  border-radius: 22px;
  background: rgba(248, 250, 252, 0.94);
}

.openmind-prompt pre {
  margin: 0;
  white-space: pre-wrap;
  color: #2a313d;
  font-family: "Google Sans", "Noto Sans", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.7;
}

.openmind-options {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.openmind-option {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  width: 100%;
  padding: 16px 18px;
  border: 1px solid var(--brain-line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.8);
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.openmind-option:hover {
  transform: translateY(-1px);
  border-color: rgba(23, 118, 204, 0.16);
}

.openmind-option.is-selected {
  border-color: rgba(23, 118, 204, 0.2);
  background: rgba(231, 243, 255, 0.96);
}

.openmind-option.is-correct {
  border-color: rgba(17, 163, 106, 0.38);
  background: rgba(236, 253, 245, 0.92);
}

.openmind-option.is-wrong {
  border-color: rgba(207, 55, 95, 0.32);
  background: rgba(255, 241, 245, 0.92);
}

.openmind-option-bullet {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border-radius: 50%;
  background: rgba(191, 219, 254, 0.36);
  color: var(--brain-accent-strong);
  font-size: 13px;
  font-weight: 800;
}

.openmind-option-copy strong {
  display: block;
  font-size: 15px;
}

.openmind-option-copy span {
  display: block;
  margin-top: 4px;
  color: #475569;
  line-height: 1.55;
}

.openmind-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.openmind-result-banner {
  margin-top: 20px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(248, 250, 252, 0.88);
  border: 1px solid var(--brain-line);
}

.openmind-result-banner.is-correct {
  border-color: rgba(17, 163, 106, 0.22);
  background: rgba(236, 253, 245, 0.82);
}

.openmind-result-banner.is-wrong {
  border-color: rgba(207, 55, 95, 0.22);
  background: rgba(255, 241, 245, 0.84);
}

.openmind-mini-chip {
  min-height: 28px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  font-weight: 700;
}

.openmind-diagram {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--brain-line);
  border-radius: 22px;
  background: rgba(245, 249, 255, 0.92);
}

.openmind-diagram h4 {
  margin: 0 0 14px;
  font-size: 15px;
  letter-spacing: -0.02em;
}

.openmind-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.openmind-role-card,
.openmind-condiment-cell,
.openmind-day-row,
.openmind-track-box,
.openmind-flow-node,
.openmind-meta-node {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--brain-line);
}

.openmind-role-card {
  padding: 14px;
}

.openmind-role-card strong,
.openmind-condiment-cell strong,
.openmind-day-row strong,
.openmind-track-box strong,
.openmind-flow-node strong,
.openmind-meta-node strong {
  display: block;
  font-size: 14px;
}

.openmind-role-card span,
.openmind-condiment-cell span,
.openmind-day-row span,
.openmind-track-box span,
.openmind-flow-node span,
.openmind-meta-node span {
  display: block;
  margin-top: 4px;
  color: #475569;
  font-size: 13px;
  line-height: 1.5;
}

.openmind-role-card.is-pass,
.openmind-condiment-cell.is-pass,
.openmind-track-box.is-pass,
.openmind-flow-node.is-pass,
.openmind-meta-node.is-pass {
  border-color: rgba(17, 163, 106, 0.26);
  background: rgba(236, 253, 245, 0.9);
}

.openmind-role-card.is-fail,
.openmind-condiment-cell.is-fail,
.openmind-day-row.is-fail,
.openmind-track-box.is-fail,
.openmind-flow-node.is-fail,
.openmind-meta-node.is-fail {
  border-color: rgba(207, 55, 95, 0.22);
  background: rgba(255, 241, 245, 0.9);
}

.openmind-table {
  display: grid;
  gap: 10px;
}

.openmind-table-head,
.openmind-table-row {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 10px;
}

.openmind-table-head span {
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.openmind-condiment-cell,
.openmind-day-row,
.openmind-track-box,
.openmind-flow-node,
.openmind-meta-node {
  padding: 14px;
}

.openmind-day-list {
  display: grid;
  gap: 8px;
}

.openmind-day-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.openmind-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.openmind-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.openmind-flow-arrow {
  display: grid;
  place-items: center;
  color: var(--brain-muted);
  font-weight: 800;
}

.openmind-meta {
  display: grid;
  gap: 12px;
}

.openmind-meta-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.openmind-steps {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.openmind-step {
  padding: 16px 18px;
  border: 1px solid var(--brain-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
}

.openmind-step-head strong {
  font-size: 14px;
}

.openmind-step p {
  margin: 10px 0 0;
  color: #5f6775;
  line-height: 1.7;
}

.openmind-insight {
  margin-top: 18px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(248, 250, 252, 0.94);
  border: 1px solid var(--brain-line);
}

.openmind-insight strong {
  display: block;
  font-size: 15px;
}

.openmind-insight p {
  margin: 8px 0 0;
  color: #5f6775;
  line-height: 1.65;
}

.openmind-summary-card {
  display: none;
}

.openmind-summary-card.is-visible {
  display: block;
}

.openmind-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.openmind-summary-box {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid var(--brain-line);
  background: rgba(255, 255, 255, 0.82);
}

.openmind-summary-box span {
  display: block;
  color: var(--brain-muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.openmind-summary-box strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  letter-spacing: -0.05em;
}

@media (min-width: 721px) {
  .openmind-shell {
    padding-top: 18px;
    padding-bottom: 36px;
  }

  .openmind-content-card {
    border-radius: 28px;
  }
}

@media (max-width: 720px) {
  .openmind-shell {
    padding: 12px 10px 24px;
  }

  .openmind-sidebar-card,
  .openmind-question-card,
  .openmind-explain-card,
  .openmind-summary-card,
  .openmind-hero,
  .openmind-content-card {
    padding: 16px;
    border-radius: 20px;
  }

  .openmind-stats,
  .openmind-summary-grid,
  .openmind-grid-3,
  .openmind-track,
  .openmind-flow,
  .openmind-meta-row {
    grid-template-columns: 1fr;
  }

  .openmind-progress-copy,
  .openmind-sidebar-head,
  .openmind-question-head,
  .openmind-result-head,
  .openmind-summary-head,
  .openmind-cta-row,
  .openmind-day-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .openmind-table-head,
  .openmind-table-row {
    grid-template-columns: 1fr;
  }
}

/* Pixel refresh */
:root {
  --brain-bg: #eef4ff;
  --brain-bg-soft: #fbfdff;
  --brain-surface: #ffffff;
  --brain-panel: #f7faff;
  --brain-line: #b8c9f0;
  --brain-line-strong: #1d4ed8;
  --brain-line-dark: #102b88;
  --brain-ink: #10213d;
  --brain-muted: #526987;
  --brain-accent: #1d4ed8;
  --brain-accent-soft: #edf3ff;
  --brain-accent-strong: #163eb8;
  --brain-correct: #1e8a63;
  --brain-correct-soft: #f1fff8;
  --brain-wrong: #c44a6b;
  --brain-wrong-soft: #fff4f7;
  --brain-shadow: 4px 4px 0 rgba(29, 78, 216, 0.14);
  --brain-radius-sm: 4px;
  --brain-radius-md: 6px;
  --brain-radius-lg: 10px;
  --pixel-cut-xs: 2px;
  --pixel-cut-sm: 4px;
  --pixel-cut-md: 6px;
  --pixel-cut-lg: 8px;
  --pixel-grid-size: 16px;
  --type-copy: 15px;
  --type-copy-tight: 14px;
  --type-label: 11px;
  --type-button: 11px;
  --type-title-xl: clamp(30px, 6.4vw, 38px);
  --type-title-lg: clamp(24px, 5.8vw, 30px);
  --type-title-md: clamp(28px, 6vw, 36px);
  --type-answer: 18px;
  --type-feedback-title: 17px;
  --type-stat: 26px;
  --brain-body: "Noto Sans Thai", "Noto Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --brain-display: "Chakra Petch", "Noto Sans Thai", "Noto Sans", ui-sans-serif, system-ui, sans-serif;
  --brain-pixel: "Silkscreen", "Noto Sans Thai", "Noto Sans", monospace;
}

html {
  background: var(--brain-bg-soft);
}

body {
  font-family: var(--brain-body);
  color: var(--brain-ink);
  background-color: var(--brain-bg-soft);
  background-image:
    linear-gradient(rgba(29, 78, 216, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 78, 216, 0.07) 1px, transparent 1px);
  background-size: var(--pixel-grid-size) var(--pixel-grid-size);
  background-position: -1px -1px;
}

button,
input {
  font: inherit;
}

button:focus-visible,
input:focus-visible {
  outline: 2px solid rgba(29, 78, 216, 0.3);
  outline-offset: 2px;
}

.pixel-frame,
.pixel-panel,
.pixel-stage,
.pixel-canvas-shell,
.openmind-content-card,
.openmind-sidebar-card,
.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card,
.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.openmind-hero,
.openmind-stat,
.openmind-summary-box {
  border-radius: 0;
  clip-path: polygon(
    var(--pixel-cut-lg) 0,
    calc(100% - var(--pixel-cut-lg)) 0,
    100% var(--pixel-cut-lg),
    100% calc(100% - var(--pixel-cut-lg)),
    calc(100% - var(--pixel-cut-lg)) 100%,
    var(--pixel-cut-lg) 100%,
    0 calc(100% - var(--pixel-cut-lg)),
    0 var(--pixel-cut-lg)
  );
}

.pixel-frame-sm,
.pixel-toolbar,
.pixel-tool-btn,
.pixel-swatch,
.pixel-chip,
.pixel-button,
.openmind-lang-toggle,
.openmind-lang-btn,
.openmind-eyebrow,
.quiz-section-counter,
.quiz-section-chip,
.quiz-progress-wrap,
.quiz-jump-btn,
.quiz-q-stars,
.quiz-diagram-wrap,
.quiz-choice,
.quiz-choice-badge,
.step-num,
.quiz-complete-icon,
.quiz-complete-nav,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost,
.openmind-nav-btn,
.openmind-chip,
.openmind-mini-chip {
  border-radius: 0;
  clip-path: polygon(
    var(--pixel-cut-sm) 0,
    calc(100% - var(--pixel-cut-sm)) 0,
    100% var(--pixel-cut-sm),
    100% calc(100% - var(--pixel-cut-sm)),
    calc(100% - var(--pixel-cut-sm)) 100%,
    var(--pixel-cut-sm) 100%,
    0 calc(100% - var(--pixel-cut-sm)),
    0 var(--pixel-cut-sm)
  );
}

.pixel-stage,
.pixel-canvas-shell,
.quiz-progress-wrap,
.quiz-complete-nav,
.quiz-diagram-wrap {
  background-image:
    linear-gradient(rgba(29, 78, 216, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 78, 216, 0.06) 1px, transparent 1px);
  background-size: 12px 12px;
  background-position: -1px -1px;
}

.pixel-panel,
.pixel-stage,
.pixel-canvas-shell {
  border: 2px solid var(--brain-line-dark);
  background-color: var(--brain-surface);
  box-shadow: var(--brain-shadow);
}

.pixel-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pixel-tool-btn,
.pixel-button {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  min-height: 42px;
  padding: 10px 12px;
  border: 2px solid var(--brain-line-strong);
  background: var(--brain-surface);
  color: var(--brain-accent-strong);
  font-family: var(--brain-pixel);
  font-size: var(--type-label);
  line-height: 1.1;
  transition:
    transform 120ms steps(2, end),
    box-shadow 120ms steps(2, end),
    background-color 120ms steps(2, end),
    color 120ms steps(2, end),
    border-color 120ms steps(2, end);
}

.pixel-tool-btn:hover,
.pixel-button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.pixel-tool-btn.is-active,
.pixel-button.is-active {
  border-color: var(--brain-line-dark);
  background: var(--brain-accent);
  color: #fff;
  box-shadow: 2px 2px 0 var(--brain-line-dark);
}

.pixel-swatch {
  width: 24px;
  height: 24px;
  border: 2px solid var(--brain-line-strong);
  background: currentColor;
}

.pixel-canvas,
.pixel-stage canvas,
.pixel-canvas-shell canvas,
.pixel-art,
.pixel-sprite,
.pixel-avatar,
.pixel-stage img[data-pixel],
.pixel-canvas-shell img[data-pixel] {
  display: block;
  max-width: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.pixel-avatar {
  border: 2px solid var(--brain-line-strong);
  background: var(--brain-surface);
  clip-path: polygon(
    var(--pixel-cut-sm) 0,
    calc(100% - var(--pixel-cut-sm)) 0,
    100% var(--pixel-cut-sm),
    100% calc(100% - var(--pixel-cut-sm)),
    calc(100% - var(--pixel-cut-sm)) 100%,
    var(--pixel-cut-sm) 100%,
    0 calc(100% - var(--pixel-cut-sm)),
    0 var(--pixel-cut-sm)
  );
}

.pixel-grid {
  background-image:
    linear-gradient(rgba(29, 78, 216, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 78, 216, 0.08) 1px, transparent 1px);
  background-size: 12px 12px;
  background-position: -1px -1px;
}

.quiz-diagram,
.quiz-diagram line,
.quiz-diagram path,
.quiz-diagram rect,
.quiz-diagram circle,
.quiz-diagram ellipse,
.quiz-diagram polygon,
.quiz-diagram polyline {
  shape-rendering: crispEdges;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.openmind-shell {
  width: min(100%, 520px);
  padding: 20px 14px 30px;
}

.openmind-lang-toggle {
  gap: 4px;
  padding: 4px;
  border: 2px solid var(--brain-line-strong);
  border-radius: var(--brain-radius-md);
  background: var(--brain-surface);
  box-shadow: none;
  backdrop-filter: none;
}

.openmind-lang-btn {
  min-width: 52px;
  height: 36px;
  border-radius: var(--brain-radius-sm);
  color: var(--brain-muted);
  font-family: var(--brain-pixel);
  font-size: var(--type-label);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: none;
  transition:
    transform 120ms steps(2, end),
    background-color 120ms steps(2, end),
    color 120ms steps(2, end),
    box-shadow 120ms steps(2, end);
}

.openmind-lang-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.openmind-lang-btn.is-active {
  border: 0;
  background: var(--brain-accent);
  color: #fff;
  box-shadow: none;
}

.openmind-content-card,
.openmind-sidebar-card,
.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card,
.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.openmind-hero,
.openmind-stat,
.openmind-nav-btn,
.openmind-summary-box {
  border: 2px solid var(--brain-line-strong);
  border-radius: var(--brain-radius-lg);
  background: var(--brain-surface);
  box-shadow: none;
  backdrop-filter: none;
}

.openmind-content-card {
  padding: 22px;
  overflow: hidden;
  box-shadow: var(--brain-shadow);
}

.quiz-shell {
  position: relative;
  gap: 20px;
}

.quiz-section-header {
  gap: 14px;
}

.quiz-section-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.openmind-eyebrow,
.quiz-section-counter {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border: 2px solid var(--brain-line-strong);
  border-radius: var(--brain-radius-sm);
  background: var(--brain-accent-soft);
  color: var(--brain-accent-strong);
  font-family: var(--brain-pixel);
  font-size: var(--type-label);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-transform: none;
  box-shadow: none;
}

.openmind-eyebrow {
  margin: 0;
}

.quiz-section-counter {
  min-width: 62px;
  justify-content: center;
  background: var(--brain-surface);
}

.quiz-section-title {
  font-size: var(--type-title-xl);
  font-family: var(--brain-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--brain-ink);
}

.quiz-section-desc,
.quiz-q-text,
.quiz-answer-text,
.quiz-complete-text,
.explain-step div,
.quiz-explanation,
.quiz-feedback-copy,
.openmind-rule-list {
  color: var(--brain-muted);
  font-size: var(--type-copy);
  line-height: 1.75;
}

.quiz-section-desc {
  max-width: 34ch;
  margin: 0;
}

.quiz-section-switcher {
  gap: 10px;
}

.quiz-section-chip {
  gap: 6px;
  min-width: 104px;
  padding: 12px;
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-md);
  background: var(--brain-surface);
  color: var(--brain-muted);
  box-shadow: none;
  transition:
    transform 120ms steps(2, end),
    border-color 120ms steps(2, end),
    background-color 120ms steps(2, end),
    color 120ms steps(2, end),
    box-shadow 120ms steps(2, end);
}

.quiz-section-chip:hover {
  transform: translate(-2px, -2px);
  border-color: var(--brain-line-strong);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.quiz-section-chip-label,
.quiz-section-chip-meta,
.quiz-q-num,
.quiz-feedback-label,
.quiz-answer-label,
.quiz-complete-nav-label,
.explain-table th,
.openmind-stat-label,
.openmind-summary-box span,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost {
  font-family: var(--brain-pixel);
}

.quiz-section-chip-label {
  font-size: var(--type-label);
  line-height: 1.45;
}

.quiz-section-chip-meta {
  font-size: var(--type-label);
  opacity: 1;
}

.quiz-section-chip.is-started {
  border-color: #7ea4ec;
  background: var(--brain-panel);
  color: #355489;
}

.quiz-section-chip.is-current {
  border-color: var(--brain-line-strong);
  background: var(--brain-accent-soft);
  color: var(--brain-accent-strong);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.quiz-progress-wrap {
  gap: 12px;
  padding: 12px;
  border: 2px dashed var(--brain-line);
  border-radius: var(--brain-radius-md);
  background: var(--brain-panel);
}

.quiz-jump-nav {
  gap: 8px;
}

.quiz-jump-btn {
  min-width: 36px;
  height: 36px;
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-sm);
  background: var(--brain-surface);
  color: var(--brain-muted);
  font-family: var(--brain-pixel);
  font-size: var(--type-label);
  box-shadow: none;
  transition:
    transform 120ms steps(2, end),
    border-color 120ms steps(2, end),
    background-color 120ms steps(2, end),
    color 120ms steps(2, end),
    box-shadow 120ms steps(2, end);
}

.quiz-jump-btn:hover {
  transform: translate(-2px, -2px);
  border-color: var(--brain-line-strong);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.quiz-jump-btn.is-completed {
  border-color: var(--brain-correct);
  background: var(--brain-correct-soft);
  color: var(--brain-correct);
}

.quiz-jump-btn.is-current {
  border-color: var(--brain-line-dark);
  background: var(--brain-accent);
  color: #fff;
  box-shadow: 2px 2px 0 var(--brain-line-dark);
}

.quiz-jump-btn.is-current.is-completed {
  border-color: var(--brain-correct);
  background: #d8f7e7;
  color: #0f744f;
}

.quiz-question-block,
.quiz-answer-block {
  padding: 18px;
}

.quiz-q-header {
  gap: 12px;
}

.quiz-q-meta {
  align-items: center;
  gap: 12px;
}

.quiz-q-num {
  color: var(--brain-accent-strong);
  font-size: var(--type-label);
  letter-spacing: 0.06em;
}

.quiz-q-title {
  font-size: var(--type-title-lg);
  font-family: var(--brain-display);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--brain-ink);
}

.quiz-q-stars {
  gap: 4px;
  padding: 6px 8px;
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-sm);
  background: var(--brain-surface);
  box-shadow: none;
}

.quiz-q-stars .star {
  color: #d3def4;
}

.quiz-q-stars .star.filled {
  color: var(--brain-accent);
}

.quiz-q-text strong,
.quiz-answer-text strong,
.quiz-explanation strong,
.quiz-feedback-value,
.openmind-nav-btn strong,
.openmind-summary-box strong,
.openmind-stat strong {
  color: var(--brain-ink);
}

.quiz-diagram-wrap {
  margin: 14px 0;
  padding: 12px;
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-md);
  background: var(--brain-surface);
  box-shadow: none;
}

.quiz-diagram {
  display: block;
  width: 100%;
  height: auto;
  filter: none;
}

.quiz-diagram[data-pixel-diagram="true"] {
  overflow: visible;
}

.quiz-diagram text,
.quiz-diagram tspan {
  font-family: var(--brain-pixel);
  letter-spacing: 0.03em;
}

.quiz-diagram rect,
.quiz-diagram line,
.quiz-diagram path,
.quiz-diagram circle,
.quiz-diagram ellipse,
.quiz-diagram polygon,
.quiz-diagram polyline {
  vector-effect: non-scaling-stroke;
}

.quiz-diagram rect {
  shape-rendering: crispEdges;
}

.quiz-choice-list {
  gap: 10px;
  margin-top: 16px;
}

.quiz-choice {
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-md);
  background: var(--brain-surface);
  box-shadow: none;
  transition:
    transform 120ms steps(2, end),
    border-color 120ms steps(2, end),
    box-shadow 120ms steps(2, end),
    background-color 120ms steps(2, end);
}

.quiz-choice:hover:not(:disabled) {
  transform: translate(-2px, -2px);
  border-color: var(--brain-line-strong);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.quiz-choice-badge {
  width: 34px;
  height: 34px;
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-sm);
  background: var(--brain-accent-soft);
  color: var(--brain-accent-strong);
  font-family: var(--brain-pixel);
  font-size: var(--type-label);
  box-shadow: none;
}

.quiz-choice-text {
  font-family: var(--brain-display);
  color: var(--brain-ink);
  font-size: var(--type-copy);
  line-height: 1.7;
}

.quiz-choice.is-selected {
  border-color: var(--brain-line-strong);
  background: var(--brain-accent-soft);
}

.quiz-choice.is-selected .quiz-choice-badge {
  border-color: var(--brain-line-strong);
  background: #dfe9ff;
}

.quiz-choice.is-correct {
  border-color: var(--brain-correct);
  background: var(--brain-correct-soft);
}

.quiz-choice.is-correct .quiz-choice-badge {
  border-color: var(--brain-correct);
  background: #dbfaeb;
  color: var(--brain-correct);
}

.quiz-choice.is-wrong {
  border-color: var(--brain-wrong);
  background: var(--brain-wrong-soft);
}

.quiz-choice.is-wrong .quiz-choice-badge {
  border-color: var(--brain-wrong);
  background: #ffe0e9;
  color: var(--brain-wrong);
}

.quiz-feedback-card {
  padding: 18px;
  background: var(--brain-surface);
}

.quiz-feedback-card.is-correct {
  border-color: var(--brain-correct);
  background: var(--brain-correct-soft);
}

.quiz-feedback-card.is-wrong {
  border-color: var(--brain-wrong);
  background: var(--brain-wrong-soft);
}

.quiz-feedback-title,
.quiz-explanation-title {
  font-family: var(--brain-display);
  font-weight: 600;
  color: var(--brain-ink);
  font-size: var(--type-feedback-title);
  letter-spacing: 0;
}

.quiz-feedback-copy {
  margin-top: 8px;
}

.quiz-feedback-label,
.quiz-answer-label,
.quiz-complete-nav-label {
  color: var(--brain-accent-strong);
  font-size: var(--type-label);
  letter-spacing: 0.05em;
}

.quiz-feedback-value {
  font-size: var(--type-copy);
}

.quiz-answer-box {
  padding: 16px;
  border: 2px solid var(--brain-correct);
  border-radius: var(--brain-radius-md);
  background: var(--brain-correct-soft);
  box-shadow: none;
}

.quiz-answer-label {
  color: var(--brain-correct);
}

.quiz-answer-text {
  margin-top: 10px;
  font-family: var(--brain-display);
  font-size: var(--type-answer);
  font-weight: 600;
  color: var(--brain-ink);
}

.quiz-explanation {
  margin-top: 18px;
}

.explain-step {
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: 1px dashed var(--brain-line);
}

.step-num {
  width: 32px;
  height: 32px;
  border: 2px solid var(--brain-line-strong);
  border-radius: var(--brain-radius-sm);
  background: var(--brain-accent-soft);
  color: var(--brain-accent-strong);
  font-family: var(--brain-pixel);
  font-size: var(--type-label);
  box-shadow: none;
}

.explain-table {
  border: 2px solid var(--brain-line);
  border-radius: var(--brain-radius-md);
  background: var(--brain-surface);
}

.explain-table th,
.explain-table td {
  border-bottom: 1px solid rgba(184, 201, 240, 0.9);
}

.explain-table th {
  background: var(--brain-panel);
  color: var(--brain-accent-strong);
  font-size: var(--type-label);
  letter-spacing: 0.05em;
}

.explain-table td {
  color: var(--brain-ink);
}

.openmind-button,
.quiz-btn-secondary,
.openmind-ghost {
  min-height: 46px;
  padding: 0 16px;
  border: 2px solid var(--brain-line-strong);
  border-radius: var(--brain-radius-md);
  font-size: var(--type-button);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: none;
  box-shadow: none;
  transition:
    transform 120ms steps(2, end),
    box-shadow 120ms steps(2, end),
    background-color 120ms steps(2, end),
    color 120ms steps(2, end),
    border-color 120ms steps(2, end);
}

.openmind-button {
  border-color: var(--brain-line-dark);
  background: var(--brain-accent);
  color: #fff;
}

.quiz-btn-secondary,
.openmind-ghost {
  background: var(--brain-surface);
  color: var(--brain-accent-strong);
}

.openmind-button:hover:not(:disabled),
.quiz-btn-secondary:hover:not(:disabled),
.openmind-ghost:hover:not(:disabled) {
  transform: translate(-2px, -2px);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
  filter: none;
}

.openmind-button:disabled,
.quiz-btn-secondary:disabled,
.openmind-ghost:disabled {
  opacity: 0.58;
  box-shadow: none;
}

.quiz-actions {
  gap: 12px;
}

.quiz-complete {
  gap: 14px;
  padding: 4px 0 0;
}

.quiz-complete-title,
.quiz-complete h2 {
  margin: 0;
  font-family: var(--brain-display);
  font-weight: 600;
  font-size: var(--type-title-md);
  line-height: 1.08;
  color: var(--brain-ink);
}

.quiz-complete-icon {
  width: 72px;
  height: 72px;
  border: 2px solid var(--brain-line-strong);
  border-radius: 8px;
  background: var(--brain-accent-soft);
  box-shadow: none;
  font-size: 32px;
}

.quiz-complete-nav {
  width: 100%;
  gap: 12px;
  padding: 12px;
  border: 2px dashed var(--brain-line);
  border-radius: var(--brain-radius-md);
  background: var(--brain-panel);
}

.quiz-complete-nav .quiz-jump-nav {
  justify-content: center;
}

.openmind-hero,
.openmind-sidebar-card,
.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card {
  padding: 20px;
}

.openmind-nav-btn {
  gap: 6px;
  padding: 14px 16px;
  border-color: var(--brain-line);
  background: var(--brain-surface);
  box-shadow: none;
  transition:
    transform 120ms steps(2, end),
    border-color 120ms steps(2, end),
    box-shadow 120ms steps(2, end),
    background-color 120ms steps(2, end);
}

.openmind-nav-btn:hover {
  transform: translate(-2px, -2px);
  border-color: var(--brain-line-strong);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.openmind-nav-btn.is-active {
  border-color: var(--brain-line-strong);
  background: var(--brain-accent-soft);
  box-shadow: 2px 2px 0 var(--brain-line-strong);
}

.openmind-chip,
.openmind-mini-chip {
  min-height: 32px;
  padding: 6px 10px;
  border: 2px solid var(--brain-line);
  border-radius: 999px;
  background: var(--brain-surface);
  color: var(--brain-muted);
}

.openmind-stat,
.openmind-summary-box {
  border-color: var(--brain-line);
}

.openmind-stat-label,
.openmind-summary-box span {
  color: var(--brain-accent-strong);
  font-size: var(--type-label);
  letter-spacing: 0.05em;
}

.openmind-stat strong,
.openmind-summary-box strong {
  margin-top: 8px;
  font-family: var(--brain-display);
  font-weight: 600;
  font-size: var(--type-stat);
}

@media (max-width: 720px) {
  body {
    background-size: 14px 14px;
  }

  .openmind-shell {
    width: min(100%, 100%);
    padding: 12px 10px 24px;
  }

  .openmind-content-card,
  .quiz-question-block,
  .quiz-answer-block,
  .quiz-feedback-card,
  .openmind-sidebar-card,
  .openmind-question-card,
  .openmind-explain-card,
  .openmind-summary-card,
  .openmind-hero {
    padding: 16px;
    border-radius: 8px;
  }

  .quiz-section-banner {
    align-items: flex-start;
  }

  .quiz-section-chip {
    flex: 1 1 140px;
    min-width: calc(50% - 5px);
  }

  .quiz-jump-btn {
    min-width: 34px;
    height: 34px;
  }

  .quiz-q-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .quiz-choice {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .explain-step {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .step-num {
    width: 30px;
    height: 30px;
  }
}

/* Full pixel type + square boxes */
:root {
  --brain-body: "Chakra Petch", "Noto Sans Thai", "Noto Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --brain-display: "Chakra Petch", "Noto Sans Thai", "Noto Sans", ui-sans-serif, system-ui, sans-serif;
  --brain-pixel: "Silkscreen", "Chakra Petch", "Noto Sans Thai", "Noto Sans", monospace;
}

body {
  font-family: var(--brain-body);
  letter-spacing: 0.01em;
}

.pixel-frame,
.pixel-panel,
.pixel-stage,
.pixel-canvas-shell,
.pixel-frame-sm,
.pixel-toolbar,
.pixel-tool-btn,
.pixel-swatch,
.pixel-chip,
.pixel-button,
.pixel-avatar,
.openmind-content-card,
.openmind-sidebar-card,
.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card,
.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.openmind-hero,
.openmind-stat,
.openmind-summary-box,
.openmind-lang-toggle,
.openmind-lang-btn,
.openmind-eyebrow,
.quiz-section-counter,
.quiz-section-chip,
.quiz-progress-wrap,
.quiz-jump-btn,
.quiz-q-stars,
.quiz-diagram-wrap,
.quiz-choice,
.quiz-choice-badge,
.step-num,
.quiz-complete-icon,
.quiz-complete-nav,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost,
.openmind-nav-btn,
.openmind-chip,
.openmind-mini-chip,
.quiz-answer-box,
.explain-table {
  border-radius: 0;
  clip-path: none;
}

/* Type balance pass */
:root {
  --type-copy: 14px;
  --type-copy-tight: 13px;
  --type-label: 12px;
  --type-button: 12px;
  --type-title-xl: clamp(28px, 5.8vw, 34px);
  --type-title-lg: clamp(22px, 5vw, 27px);
  --type-title-md: clamp(25px, 5.4vw, 31px);
  --type-answer: 17px;
  --type-feedback-title: 16px;
  --type-stat: 24px;
}

body {
  line-height: 1.65;
}

.openmind-eyebrow,
.quiz-section-counter,
.quiz-section-chip-label,
.quiz-section-chip-meta,
.quiz-q-num,
.quiz-feedback-label,
.quiz-answer-label,
.quiz-complete-nav-label,
.openmind-stat-label,
.openmind-summary-box span,
.quiz-jump-btn,
.openmind-lang-btn,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost,
.quiz-choice-badge,
.step-num,
.explain-table th,
.pixel-tool-btn,
.pixel-button {
  font-size: var(--type-label);
}

.quiz-section-title {
  line-height: 1.04;
}

.quiz-q-title,
.quiz-complete-title,
.quiz-complete h2 {
  line-height: 1.12;
}

.quiz-section-desc,
.quiz-q-text,
.quiz-complete-text,
.quiz-feedback-copy,
.quiz-explanation,
.openmind-rule-list,
.quiz-choice-text,
.quiz-feedback-value,
.explain-table td {
  font-size: var(--type-copy);
  line-height: 1.7;
}

.quiz-answer-text {
  font-size: var(--type-answer);
  line-height: 1.55;
}

.quiz-feedback-title,
.quiz-explanation-title {
  font-size: var(--type-feedback-title);
  line-height: 1.35;
}

.quiz-section-chip {
  padding: 13px 12px;
}

.quiz-jump-btn {
  min-width: 38px;
  height: 38px;
}

.quiz-choice-badge {
  width: 36px;
  height: 36px;
}

.step-num {
  width: 34px;
  height: 34px;
}

.openmind-button,
.quiz-btn-secondary,
.openmind-ghost {
  min-height: 48px;
  padding: 0 18px;
}

@media (max-width: 720px) {
  .quiz-jump-btn {
    min-width: 34px;
    height: 34px;
  }

  .quiz-choice-badge {
    width: 34px;
    height: 34px;
  }

  .step-num {
    width: 30px;
    height: 30px;
  }
}

/* ASCII hybrid preview */
:root {
  --brain-body: "Chakra Petch", "Noto Sans Thai", "Noto Sans", ui-sans-serif, system-ui, sans-serif;
  --brain-display: "IBM Plex Mono", "Chakra Petch", "Noto Sans Thai", monospace;
  --brain-pixel: "IBM Plex Mono", "Silkscreen", "Chakra Petch", "Noto Sans Thai", monospace;
  --type-copy: 15px;
  --type-label: 12px;
  --type-button: 13px;
  --type-title-xl: clamp(26px, 5.6vw, 31px);
  --type-title-lg: clamp(21px, 4.8vw, 25px);
  --type-title-md: clamp(23px, 5.1vw, 28px);
  --type-answer: 17px;
  --type-feedback-title: 15px;
}

body {
  background-color: #f9fbff;
  background-image:
    linear-gradient(rgba(16, 43, 136, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 43, 136, 0.05) 1px, transparent 1px);
  background-size: 18px 18px;
  font-family: var(--brain-body);
  letter-spacing: 0;
}

.openmind-shell {
  width: min(100%, 600px);
}

.openmind-content-card,
.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.quiz-progress-wrap,
.quiz-complete-nav,
.quiz-diagram-wrap,
.quiz-answer-box,
.explain-table,
.quiz-section-chip,
.quiz-jump-btn,
.openmind-lang-toggle,
.openmind-lang-btn,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost,
.quiz-choice,
.quiz-choice-badge,
.quiz-q-stars,
.quiz-complete-icon {
  border-radius: 0;
  clip-path: none;
}

.openmind-content-card,
.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.quiz-progress-wrap,
.quiz-complete-nav,
.quiz-diagram-wrap,
.quiz-answer-box,
.explain-table,
.quiz-section-chip,
.quiz-jump-btn,
.openmind-lang-toggle,
.openmind-lang-btn,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost,
.quiz-choice,
.quiz-choice-badge,
.quiz-q-stars,
.quiz-complete-icon {
  box-shadow: none;
}

.openmind-content-card {
  border-color: var(--brain-line-dark);
  padding: 18px;
}

.quiz-shell {
  gap: 16px;
}

.quiz-section-header {
  gap: 10px;
}

.openmind-eyebrow,
.quiz-section-counter {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--brain-line-dark);
  box-shadow: none;
  font-family: var(--brain-display);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.quiz-section-counter {
  color: var(--brain-muted);
}

.quiz-section-title,
.quiz-q-title,
.quiz-complete-title,
.quiz-complete h2,
.quiz-feedback-title,
.quiz-explanation-title,
.quiz-answer-text {
  font-family: var(--brain-display);
}

.quiz-section-title {
  line-height: 1.1;
}

.quiz-q-title,
.quiz-complete-title,
.quiz-complete h2 {
  line-height: 1.16;
}

.quiz-section-desc,
.quiz-q-text,
.quiz-choice-text,
.quiz-feedback-copy,
.quiz-feedback-value,
.quiz-complete-text,
.quiz-explanation,
.explain-step div,
.explain-table td {
  font-family: var(--brain-body);
  font-size: 14px;
  line-height: 1.68;
}

.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.quiz-progress-wrap,
.quiz-complete-nav,
.quiz-diagram-wrap {
  position: relative;
  padding-top: 20px;
}

.quiz-question-block::before,
.quiz-answer-block::before,
.quiz-feedback-card::before,
.quiz-progress-wrap::before,
.quiz-complete-nav::before,
.quiz-diagram-wrap::before {
  content: none;
}

.quiz-progress-wrap,
.quiz-complete-nav,
.quiz-diagram-wrap {
  background-color: #fcfdff;
  background-image: none;
}

.quiz-section-chip {
  padding: 10px 12px;
  border-color: var(--brain-line-dark);
  background: #fff;
}

.quiz-section-chip-label,
.quiz-section-chip-meta,
.quiz-q-num,
.quiz-feedback-label,
.quiz-answer-label,
.quiz-complete-nav-label,
.quiz-jump-btn,
.openmind-lang-btn,
.openmind-button,
.quiz-btn-secondary,
.openmind-ghost,
.quiz-choice-badge,
.step-num,
.explain-table th {
  font-family: var(--brain-display);
  font-size: 12px;
}

.quiz-section-chip.is-current,
.quiz-jump-btn.is-current,
.openmind-lang-btn.is-active {
  box-shadow: none;
}

.quiz-jump-btn {
  min-width: 40px;
  height: 38px;
}

.quiz-choice {
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
}

.quiz-choice-badge {
  width: auto;
  min-width: 38px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: transparent;
  border-color: var(--brain-line-dark);
  color: var(--brain-line-dark);
}

.quiz-choice-badge::before {
  content: "[";
}

.quiz-choice-badge::after {
  content: "]";
}

.quiz-q-stars {
  padding: 5px 8px;
}

.quiz-diagram text,
.quiz-diagram tspan {
  font-family: var(--brain-display);
  font-size: 12px;
}

.quiz-complete-icon {
  width: auto;
  height: auto;
  padding: 10px 14px;
  border: 1px solid var(--brain-line-dark);
  background: transparent;
  font-family: var(--brain-display);
  font-size: 18px;
  line-height: 1;
}

.openmind-button,
.quiz-btn-secondary,
.openmind-ghost {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-color: var(--brain-line-dark);
  background: #fff;
  color: var(--brain-line-dark);
  font-family: var(--brain-display);
}

.openmind-button::before,
.quiz-btn-secondary::before,
.openmind-ghost::before {
  content: "[";
}

.openmind-button::after,
.quiz-btn-secondary::after,
.openmind-ghost::after {
  content: "]";
}

.openmind-button:hover:not(:disabled),
.quiz-btn-secondary:hover:not(:disabled),
.openmind-ghost:hover:not(:disabled) {
  transform: none;
  box-shadow: none;
  background: #eef3ff;
}

.quiz-answer-box {
  padding-top: 16px;
}

@media (max-width: 720px) {
  .openmind-content-card {
    padding: 14px;
  }

  .quiz-question-block,
  .quiz-answer-block,
  .quiz-feedback-card,
  .quiz-progress-wrap,
  .quiz-complete-nav,
  .quiz-diagram-wrap {
    padding-top: 16px;
  }

  .quiz-choice {
    grid-template-columns: 44px minmax(0, 1fr);
  }
}

/* Keep the app in the mobile layout on every viewport. */
.openmind-shell {
  width: min(100%, 430px);
  padding: 12px 10px 24px;
}

.openmind-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 12px;
}

.openmind-lang-toggle {
  display: flex;
  width: max-content;
  margin: 0;
}

.openmind-home-btn {
  min-width: 72px;
  height: 46px;
  padding: 0 14px;
  border: 2px solid var(--brain-line-strong);
  border-radius: 0;
  background: #fff;
  color: var(--brain-line-dark);
  font-family: var(--brain-display);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.openmind-home-btn:hover {
  background: #eef3ff;
}

.openmind-content-card {
  padding: 14px;
}

.openmind-sidebar-card,
.openmind-question-card,
.openmind-explain-card,
.openmind-summary-card,
.openmind-hero {
  padding: 16px;
  border-radius: 8px;
}

.openmind-page.openmind-is-landing {
  min-height: 100vh;
}

.openmind-is-landing .openmind-header {
  justify-content: flex-end;
}

.openmind-page:not(.openmind-is-landing) .openmind-shell {
  padding-bottom: 132px;
}

.openmind-is-landing .openmind-home-btn {
  display: none;
}

.openmind-is-landing .openmind-shell {
  display: grid;
  align-content: start;
  width: min(100%, 430px);
  min-height: 100vh;
  padding: 12px 10px 24px;
}

.openmind-is-landing .openmind-content {
  display: grid;
  place-items: center;
  width: 100%;
}

.openmind-landing {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 20px;
  width: 100%;
  min-height: calc(100vh - 82px);
  padding: 14px;
  border: 2px solid var(--brain-accent-strong);
  border-radius: 0;
  background: var(--brain-accent);
  box-shadow: var(--brain-shadow);
}

.openmind-landing-copy {
  display: grid;
  gap: 8px;
  width: 100%;
  color: #ffffff;
  text-align: left;
}

.openmind-landing-kicker {
  margin: 0;
  font-family: var(--brain-display);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.openmind-landing-copy h1 {
  margin: 0;
  font-family: var(--brain-display);
  font-size: clamp(23px, 6vw, 31px);
  line-height: 1.12;
}

.openmind-landing-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  line-height: 1.55;
}

.home-prediction {
  display: grid;
  gap: 14px;
  width: 100%;
  padding: 12px;
  border: 2px solid #ffffff;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 5px 5px 0 var(--brain-accent-strong);
}

.home-picture-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 8px;
  border: 2px dashed rgba(255, 255, 255, 0.62);
  background:
    linear-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 10px 10px;
}

.home-picture-cell {
  display: grid;
  place-items: center;
  min-height: 72px;
  border: 2px solid #ffffff;
  background: #f8fbff;
}

.home-picture-cell.is-missing {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  font-family: var(--brain-display);
  font-size: 28px;
  font-weight: 800;
}

.home-tile {
  position: relative;
  display: block;
  width: 46px;
  height: 46px;
  background: #dff1ff;
  box-shadow:
    inset 0 0 0 6px #ffffff,
    4px 4px 0 var(--brain-accent-strong);
}

.home-tile::before,
.home-tile::after {
  content: "";
  position: absolute;
  display: block;
}

.home-tile::before {
  top: 6px;
  bottom: 6px;
  width: 10px;
  background: var(--brain-accent-strong);
}

.home-tile::after {
  width: 12px;
  height: 12px;
  background: var(--brain-accent);
  box-shadow: 0 0 0 4px #ffffff;
}

.home-tile.tile-left::before {
  left: 6px;
}

.home-tile.tile-right::before {
  right: 6px;
}

.home-tile.tile-dot-top::after {
  right: 10px;
  top: 10px;
}

.home-tile.tile-dot-bottom::after {
  right: 10px;
  bottom: 10px;
}

.home-answer-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.home-answer-option {
  display: grid;
  place-items: center;
  min-height: 74px;
  padding: 8px;
  border: 2px solid #ffffff;
  background: #ffffff;
  cursor: pointer;
}

.home-answer-option:hover:not(:disabled) {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--brain-accent-strong);
}

.home-answer-option.is-correct {
  background: #e8fff4;
  border-color: #11a36a;
}

.home-answer-option.is-wrong {
  background: #fff0f4;
  border-color: var(--brain-wrong);
}

.home-answer-feedback {
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 2px solid #ffffff;
  background: #ffffff;
  color: var(--brain-line-dark);
  font-size: 12px;
  line-height: 1.55;
}

.home-answer-feedback strong {
  font-family: var(--brain-display);
  color: var(--brain-accent-strong);
}

.openmind-landing-art {
  display: grid;
  place-items: center;
  width: min(100%, 260px);
  aspect-ratio: 1;
  border: 2px solid #ffffff;
  background:
    linear-gradient(rgba(255, 255, 255, 0.14) 2px, transparent 2px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.14) 2px, transparent 2px);
  background-size: 20px 20px;
  box-shadow: 6px 6px 0 var(--brain-accent-strong);
}

.pixel-home-board {
  position: relative;
  width: 180px;
  height: 180px;
}

.pixel-home-block,
.pixel-home-core,
.pixel-home-node,
.pixel-home-line {
  position: absolute;
  display: block;
  image-rendering: pixelated;
}

.pixel-home-block {
  width: 48px;
  height: 48px;
  border: 2px solid #ffffff;
  background: #ffffff;
  box-shadow: 4px 4px 0 var(--brain-accent-strong);
}

.pixel-home-block::before,
.pixel-home-block::after {
  content: "";
  position: absolute;
  display: block;
  background: var(--brain-accent);
}

.pixel-home-block::before {
  width: 12px;
  height: 12px;
  left: 16px;
  top: 16px;
}

.pixel-home-block::after {
  width: 10px;
  height: 10px;
  right: -8px;
  top: 18px;
  border: 2px solid #ffffff;
}

.block-a {
  left: 14px;
  top: 18px;
}

.block-b {
  right: 14px;
  top: 18px;
}

.block-b::after,
.block-d::after {
  left: -8px;
  right: auto;
}

.block-c {
  left: 14px;
  bottom: 18px;
}

.block-d {
  right: 14px;
  bottom: 18px;
}

.pixel-home-core {
  left: 58px;
  top: 58px;
  width: 64px;
  height: 64px;
  border: 2px solid #ffffff;
  background: #dff1ff;
  box-shadow:
    0 0 0 8px rgba(255, 255, 255, 0.18),
    4px 4px 0 var(--brain-accent-strong);
}

.pixel-home-core::before,
.pixel-home-core::after {
  content: "";
  position: absolute;
  display: block;
  background: var(--brain-accent-strong);
}

.pixel-home-core::before {
  width: 38px;
  height: 8px;
  left: 12px;
  top: 18px;
  box-shadow: 0 18px 0 var(--brain-accent-strong);
}

.pixel-home-core::after {
  width: 8px;
  height: 38px;
  left: 28px;
  top: 12px;
}

.pixel-home-node {
  width: 18px;
  height: 18px;
  border: 2px solid #ffffff;
  background: #ffffff;
  box-shadow: 3px 3px 0 var(--brain-accent-strong);
}

.node-a {
  left: 81px;
  top: 0;
}

.node-b {
  right: 0;
  top: 81px;
}

.node-c {
  left: 81px;
  bottom: 0;
}

.pixel-home-line {
  background: #ffffff;
  box-shadow: 3px 3px 0 var(--brain-accent-strong);
}

.line-a {
  left: 88px;
  top: 22px;
  width: 8px;
  height: 34px;
}

.line-b {
  right: 22px;
  top: 88px;
  width: 34px;
  height: 8px;
}

.line-c {
  left: 88px;
  bottom: 22px;
  width: 8px;
  height: 34px;
}

.openmind-go-btn {
  min-width: 124px;
  min-height: 54px;
  padding: 0 28px;
  border: 2px solid #ffffff;
  border-radius: 0;
  background: #ffffff;
  color: var(--brain-accent-strong);
  font-family: var(--brain-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--brain-accent-strong);
  transition:
    transform 120ms steps(2, end),
    background-color 120ms steps(2, end),
    box-shadow 120ms steps(2, end);
}

.openmind-go-btn:hover {
  transform: translate(-2px, -2px);
  background: #f5fbff;
  box-shadow: 6px 6px 0 #0f3674;
}

.openmind-go-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 #0f3674;
}

.openmind-go-copy {
  margin: -10px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 11px;
  line-height: 1.35;
  text-align: center;
}

.brain-score-hud {
  position: fixed;
  left: 50%;
  bottom: 8px;
  z-index: 30;
  display: grid;
  gap: 8px;
  width: min(calc(100% - 28px), 520px);
  padding: 10px 12px;
  border: 2px solid #0b1020;
  border-radius: 0;
  background: var(--brain-accent-strong);
  color: #ffffff;
  font-family: var(--brain-display);
  box-shadow: 5px 5px 0 #0b1020;
  transform: translateX(-50%);
}

.brain-hud-top,
.brain-hud-main,
.brain-hud-score {
  display: flex;
  align-items: center;
}

.brain-hud-top,
.brain-hud-main {
  justify-content: space-between;
  gap: 12px;
}

.brain-hud-user {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.brain-hud-signin-btn {
  padding: 0;
  border: 0;
  background: transparent;
  color: #ffffff;
  font-family: var(--brain-display);
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
}

.brain-hud-main {
  flex-wrap: wrap;
}

.brain-hud-guest,
.brain-hud-welcome,
.brain-hud-label,
.brain-hud-status {
  font-size: 11px;
  font-weight: 700;
}

.brain-hud-guest,
.brain-hud-welcome,
.brain-hud-label {
  color: rgba(255, 255, 255, 0.72);
}

.brain-hud-status {
  overflow: hidden;
  color: #ffffff;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brain-hud-score {
  gap: 7px;
  min-width: 130px;
}

.brain-hud-score strong {
  color: #ffffff;
  font-size: 20px;
  line-height: 1;
}

.brain-hud-delta {
  color: #d9f99d;
  font-size: 12px;
  font-weight: 800;
}

.brain-score-hud.is-wrong .brain-hud-delta,
.brain-score-hud.is-wrong .brain-hud-status {
  color: #ffd6e0;
}

.brain-score-hud.is-complete .brain-hud-status {
  color: #d9f99d;
}

.brain-hud-percentile {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 12px;
  line-height: 1.3;
}

.brain-hud-collapse-btn {
  flex: 0 0 auto;
  padding: 0 4px;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.72);
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
}

.brain-hud-collapse-btn:hover {
  color: #ffffff;
}

.brain-score-hud.is-profile-open.is-collapsed .brain-hud-profile {
  display: none;
}

.brain-profile-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
  gap: 10px;
}

.brain-hud-profile-btn {
  min-height: 34px;
  padding: 0 12px;
  border: 2px solid #0b1020;
  border-radius: 0;
  background: #ffffff;
  color: var(--brain-accent-strong);
  font-family: var(--brain-display);
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 3px 3px 0 #0b1020;
}

.brain-hud-profile-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 #0b1020;
}

.brain-hud-profile {
  display: none;
  gap: 6px;
  padding-top: 8px;
  border-top: 2px solid rgba(255, 255, 255, 0.32);
}

.brain-score-hud.is-profile-open .brain-hud-profile {
  display: grid;
}

.brain-profile-title,
.brain-profile-insight {
  margin: 0;
  font-size: 11px;
  line-height: 1.35;
}

.brain-profile-title {
  color: #ffffff;
  font-weight: 800;
}

.brain-profile-row {
  display: grid;
  grid-template-columns: 96px minmax(92px, 1fr) 44px;
  gap: 12px;
  align-items: center;
  color: #ffffff;
  font-size: 13px;
}

.brain-profile-row > span {
  min-width: 0;
}

.brain-profile-bar {
  position: relative;
  height: 13px;
  overflow: hidden;
  background-image: repeating-linear-gradient(
    to right,
    rgba(255, 255, 255, 0.18) 0px,
    rgba(255, 255, 255, 0.18) 10px,
    transparent 10px,
    transparent 12px
  );
}

.brain-profile-bar span {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--score-fill);
  background-image: repeating-linear-gradient(
    to right,
    #d9f99d 0px,
    #d9f99d 10px,
    transparent 10px,
    transparent 12px
  );
}

.brain-profile-row em {
  color: rgba(255, 255, 255, 0.72);
  font-style: normal;
  font-weight: 700;
  text-align: right;
}

.brain-profile-insight {
  color: rgba(255, 255, 255, 0.76);
}

.openmind-stats,
.openmind-summary-grid,
.openmind-grid-3,
.openmind-track,
.openmind-flow,
.openmind-meta-row {
  grid-template-columns: 1fr;
}

.openmind-progress-copy,
.openmind-sidebar-head,
.openmind-question-head,
.openmind-result-head,
.openmind-summary-head,
.openmind-cta-row,
.openmind-day-row {
  flex-direction: column;
  align-items: flex-start;
}

.openmind-table-head,
.openmind-table-row {
  grid-template-columns: 1fr;
}

.quiz-question-block,
.quiz-answer-block,
.quiz-feedback-card,
.quiz-progress-wrap,
.quiz-complete-nav,
.quiz-diagram-wrap {
  padding-top: 16px;
}

.quiz-section-chip {
  flex: 1 1 140px;
  min-width: calc(50% - 5px);
}

.quiz-jump-btn {
  min-width: 34px;
  height: 34px;
}

.quiz-result-dimensions {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quiz-q-meta {
  flex-direction: column;
  align-items: flex-start;
}

.quiz-choice {
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  min-height: 60px;
}

.quiz-choice-text {
  display: flex;
  align-items: center;
  min-height: 34px;
  line-height: 1.35;
}

.quiz-q-stars {
  justify-content: center;
  gap: 6px;
  padding: 5px 7px;
  font-size: 22px;
  line-height: 0.9;
}

  .quiz-q-stars .star {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
  height: 18px;
  font-family: "Noto Sans Thai", "Noto Sans", sans-serif;
  font-size: 22px;
    line-height: 1;
    letter-spacing: 0;
  }

  .openmind-page:not(.openmind-is-landing) .openmind-shell {
    padding-bottom: 124px;
  }

  .brain-score-hud {
    bottom: 6px;
    width: min(calc(100% - 20px), 410px);
    padding: 9px 10px;
    gap: 6px;
    box-shadow: 4px 4px 0 #0b1020;
  }

  .brain-hud-top {
    display: flex;
    justify-content: space-between;
    gap: 8px;
  }

  .brain-hud-main {
    justify-content: space-between;
    gap: 8px;
  }

  .brain-hud-score {
    min-width: auto;
  }

  .brain-hud-profile-btn {
    min-height: 30px;
    padding: 0 9px;
    font-size: 10px;
  }

  .brain-hud-guest,
  .brain-hud-status {
    font-size: 10px;
  }

  .brain-hud-status {
    max-width: 230px;
  }

  .brain-hud-percentile {
    flex: 1 1 100%;
    font-size: 11px;
  }

  html[data-openmind-lang="en"] {
  --brain-body: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --brain-display: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --brain-pixel: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

html[data-openmind-lang="en"] body,
html[data-openmind-lang="en"] button,
html[data-openmind-lang="en"] input {
  font-family: var(--brain-body);
}

/* Tab bar section switcher */
.quiz-section-switcher {
  flex-wrap: nowrap;
  gap: 0;
  overflow-x: auto;
  margin-top: 0;
  border-bottom: 2px solid var(--brain-line-strong);
  scrollbar-width: none;
}

.quiz-section-switcher::-webkit-scrollbar {
  display: none;
}

.quiz-section-chip {
  flex: 0 0 auto;
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
  padding: 10px 14px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  margin-bottom: 0;
  background: transparent;
  color: var(--brain-muted);
  white-space: nowrap;
  box-shadow: none;
  transform: none;
  transition: color 140ms ease, border-color 140ms ease;
}

.quiz-section-chip:hover {
  transform: none;
  border-color: transparent;
  background: transparent;
  color: var(--brain-ink);
  box-shadow: none;
}

.quiz-section-chip-label {
  font-size: 12px;
  font-weight: 800;
  font-family: var(--brain-display);
  letter-spacing: 0.01em;
}

.quiz-section-chip-meta {
  font-size: 10px;
  font-weight: 700;
  opacity: 0.55;
}

.quiz-section-chip.is-started {
  border-color: transparent;
  background: transparent;
  color: var(--brain-ink);
}

.quiz-section-chip.is-current {
  border-bottom-color: var(--brain-accent-strong);
  background: transparent;
  color: var(--brain-accent-strong);
  box-shadow: inset 0 -4px 0 var(--brain-accent-strong);
}