:root {
  --bg: #101219;
  --ink: #f8f4e9;
  --muted: #bcb7a9;
  --panel: #1a1d26;
  --panel-strong: #252936;
  --line: rgba(248, 244, 233, 0.16);
  --hot: #ff4b5f;
  --sun: #ffd166;
  --sun-text: #ffd166;
  --mint: #34d399;
  --aqua: #59d7ff;
  --aqua-text: #59d7ff;
  --violet: #b088ff;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.42);
  --radius: 8px;
}

body.light {
  --bg: #f7f1df;
  --ink: #181a20;
  --muted: #5c5a54;
  --panel: #fff9e9;
  --panel-strong: #fff2ca;
  --line: rgba(24, 26, 32, 0.16);
  --sun-text: #7a5200;
  --aqua-text: #004f5f;
  --shadow: 0 22px 70px rgba(71, 51, 18, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  scroll-behavior: smooth;
  overflow: hidden;
}

body {
  height: 100%;
  min-height: 100dvh;
  overflow: hidden;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(255, 209, 102, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(89, 215, 255, 0.07) 1px, transparent 1px),
    radial-gradient(circle at top left, rgba(255, 75, 95, 0.28), transparent 36rem),
    radial-gradient(circle at 80% 20%, rgba(52, 211, 153, 0.18), transparent 30rem),
    var(--bg);
  background-size: 44px 44px, 44px 44px, auto, auto, auto;
  font-family: "Plus Jakarta Sans", sans-serif;
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.36) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 1px, transparent 1px);
  background-size: 8px 8px;
  mask-image: linear-gradient(to bottom, #000, transparent 70%);
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  height: 100dvh;
  min-height: 0;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  min-height: 64px;
  height: 64px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark,
.avatar {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 50%;
  color: #101219;
  background: var(--sun);
  box-shadow: 5px 5px 0 var(--hot);
  font-weight: 900;
}

.brand-title {
  display: block;
  font-family: "Bungee", cursive;
  font-size: clamp(0.98rem, 1.7vw, 1.2rem);
  line-height: 1;
}

.brand-subtitle {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
}

.topbar-actions,
.share-actions,
.social-row,
.toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.icon-button,
.social-row a {
  width: 44px;
  height: 44px;
  display: inline-grid;
  place-items: center;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.icon-button:hover,
.social-row a:hover {
  transform: translateY(-2px) rotate(-2deg);
  border-color: var(--sun);
  background: var(--panel-strong);
}

main {
  flex: 1;
  min-height: 0;
  display: grid;
}

.site-footer {
  min-height: 34px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  align-content: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 0.75rem;
  line-height: 1.25;
  text-align: center;
}

.site-footer a {
  color: var(--sun-text);
  font-weight: 800;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.screen {
  display: none;
  animation: enter 450ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.screen.active {
  display: block;
  min-height: 0;
}

.icon {
  width: 1.08em;
  min-width: 1.08em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  font-size: 1.02em;
  line-height: 1;
}

.brand-mark {
  font-family: "DM Mono", monospace;
  font-size: 0.9rem;
  letter-spacing: 0;
}

@keyframes enter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.start-screen {
  height: 100%;
  padding: 10px 0 14px;
  overflow: hidden;
}

.start-screen.active {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
}

.hero-layout,
.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.75fr);
  gap: clamp(18px, 4vw, 42px);
  align-items: center;
  min-height: 0;
}

.hero-layout {
  height: 100%;
}

.hero-copy h1 {
  max-width: 820px;
  margin: 0;
  font-family: "Bungee", cursive;
  font-size: clamp(2.25rem, 5.25vw, 4.55rem);
  line-height: 0.97;
  text-wrap: balance;
  text-shadow: 4px 4px 0 rgba(255, 75, 95, 0.58);
}

.mobile-title {
  display: none;
}

.eyebrow,
.question-meta,
.mini-label {
  color: var(--sun-text);
  font-family: "DM Mono", monospace;
  font-size: 0.83rem;
  font-weight: 700;
  text-transform: uppercase;
}

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

.hero-lede {
  max-width: 690px;
  margin: 14px 0 16px;
  color: var(--muted);
  font-size: clamp(0.95rem, 1.5vw, 1.06rem);
  line-height: 1.55;
}

.start-card,
.question-panel,
.result-actions,
.review-list article {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  box-shadow: var(--shadow);
}

.start-card {
  max-width: 540px;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.start-card label {
  color: var(--muted);
  font-weight: 800;
}

.input-row {
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}

.input-row input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
}

.primary-button,
.secondary-button,
.ghost-button,
.toggle-pill {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius);
  font-weight: 900;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.primary-button {
  border: 2px solid #101219;
  color: #101219;
  background: var(--mint);
  box-shadow: 5px 5px 0 var(--hot);
}

.primary-button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--hot);
}

.secondary-button,
.ghost-button,
.toggle-pill {
  border: 2px solid var(--line);
  color: var(--ink);
  background: var(--panel);
}

.secondary-button:hover,
.ghost-button:hover,
.toggle-pill:hover {
  transform: translateY(-2px);
  background: var(--panel-strong);
}

.cabinet {
  position: relative;
  padding: 16px;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255, 209, 102, 0.18), transparent 42%),
    var(--panel);
  box-shadow: 12px 12px 0 var(--aqua), var(--shadow);
}

.cabinet::after {
  position: absolute;
  right: 28px;
  bottom: -20px;
  left: 28px;
  height: 20px;
  content: "";
  background: color-mix(in srgb, var(--ink) 85%, transparent);
  clip-path: polygon(6% 0, 94% 0, 100% 100%, 0 100%);
}

.cabinet-lights {
  display: flex;
  gap: 8px;
}

.cabinet-lights span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--hot);
  box-shadow: 0 0 18px currentColor;
}

.cabinet-lights span:nth-child(2) {
  background: var(--sun);
}

.cabinet-lights span:nth-child(3) {
  background: var(--mint);
}

.mini-score {
  margin: 14px 0;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  column-gap: 12px;
}

.mini-score strong {
  grid-row: span 2;
  color: var(--sun-text);
  font-family: "Bungee", cursive;
  font-size: clamp(4.2rem, 7vw, 5.2rem);
  line-height: 0.78;
}

.preview-question {
  padding: 14px;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
}

.chip {
  display: inline-flex;
  width: max-content;
  max-width: 100%;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid color-mix(in srgb, var(--sun-text) 58%, transparent);
  border-radius: 999px;
  color: var(--sun-text);
  background: color-mix(in srgb, var(--sun) 14%, transparent);
  font-family: "DM Mono", monospace;
  font-size: 0.77rem;
  font-weight: 700;
  text-transform: uppercase;
}

.chip.alt {
  color: var(--aqua-text);
  border-color: color-mix(in srgb, var(--aqua-text) 58%, transparent);
  background: rgba(89, 215, 255, 0.1);
}

.preview-question code {
  display: block;
  margin: 12px 0;
  font-family: "DM Mono", monospace;
  font-size: clamp(1rem, 2.7vw, 1.4rem);
  white-space: normal;
}

.preview-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.preview-options span {
  min-height: 34px;
  display: grid;
  place-items: center;
  padding: 7px;
  border-radius: var(--radius);
  color: #101219;
  background: var(--sun);
  font-size: 0.82rem;
  font-weight: 900;
  text-align: center;
}

.review-note {
  display: none;
}

.game-screen {
  height: 100%;
  padding: 10px 0 12px;
  overflow: hidden;
}

.game-screen.active {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
}

.hud-player {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hud-player strong,
.hud-player small {
  display: block;
}

.hud-player small {
  margin-top: 3px;
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 0.77rem;
}

.hud-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(76px, 1fr));
  gap: 10px;
}

.hud-stats div {
  min-height: 54px;
  padding: 8px 12px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.hud-stats span {
  display: block;
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.hud-stats strong {
  display: block;
  margin-top: 4px;
  color: var(--sun-text);
  font-size: 1.3rem;
}

.progress-track {
  height: 10px;
  margin-bottom: 10px;
  overflow: hidden;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--panel);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--mint), var(--sun), var(--hot));
  transition: width 360ms ease;
}

.question-panel {
  min-height: 0;
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: clamp(14px, 2.4vw, 24px);
}

.question-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.question-panel h2 {
  margin: 0 0 12px;
  font-size: clamp(1.25rem, 3vw, 2.15rem);
  line-height: 1.12;
  text-wrap: balance;
}

.code-block {
  flex: 0 0 auto;
  min-height: 0;
  margin: 0 0 12px;
  overflow-x: auto;
  overflow-y: visible;
  padding: 12px;
  border: 2px solid color-mix(in srgb, var(--mint) 36%, var(--line));
  border-radius: var(--radius);
  color: #d6ffe8;
  background: #0b1110;
  font-family: "DM Mono", monospace;
  font-size: clamp(0.82rem, 1.7vw, 0.98rem);
  line-height: 1.58;
  tab-size: 2;
  white-space: pre-wrap;
}

.code-block:empty {
  display: none;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.option-button {
  min-height: clamp(58px, 8.5vh, 82px);
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: color-mix(in srgb, var(--panel-strong) 88%, transparent);
  text-align: left;
  font-weight: 800;
  line-height: 1.45;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.option-button:hover:not(:disabled),
.option-button:focus-visible {
  border-color: var(--aqua);
  transform: translateY(-2px);
  outline: none;
}

.option-button.correct {
  border-color: var(--mint);
  color: #101219;
  background: var(--mint);
}

.option-button.wrong {
  border-color: var(--hot);
  color: #101219;
  background: var(--hot);
}

.option-button.muted {
  opacity: 0.55;
}

.feedback {
  min-height: 0;
  margin-top: 10px;
  padding: 0;
}

.feedback-card {
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  line-height: 1.45;
}

.feedback-card strong {
  display: block;
  margin-bottom: 4px;
}

.feedback-card p {
  margin: 0;
  color: var(--muted);
}

.next-button {
  min-width: 128px;
}

.result-screen {
  height: 100%;
  padding: 10px 0 14px;
  overflow: hidden;
}

.result-screen.active {
  display: grid;
  align-items: center;
}

.result-layout {
  height: 100%;
}

.share-card {
  position: relative;
  width: min(100%, 540px);
  height: min(560px, calc(100dvh - 100px));
  min-height: 0;
  padding: 24px;
  overflow: hidden;
  border: 4px solid #101219;
  border-radius: var(--radius);
  color: #101219;
  background:
    linear-gradient(90deg, rgba(16, 18, 25, 0.09) 1px, transparent 1px),
    linear-gradient(0deg, rgba(16, 18, 25, 0.09) 1px, transparent 1px),
    #ffd166;
  background-size: 28px 28px;
  box-shadow: 10px 10px 0 var(--hot), var(--shadow);
  display: flex;
  flex-direction: column;
}

.share-card-top,
.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.stamp,
.date,
.share-footer {
  font-family: "DM Mono", monospace;
  font-weight: 700;
  text-transform: uppercase;
}

.stamp {
  padding: 8px 10px;
  border: 2px solid #101219;
  background: #fff7db;
}

.share-name {
  margin-top: auto;
  font-family: "Bungee", cursive;
  font-size: clamp(2rem, 5vw, 3.35rem);
  line-height: 0.95;
  word-break: break-word;
}

.share-card h2 {
  margin: 12px 0 14px;
  max-width: 430px;
  font-size: clamp(1.35rem, 3vw, 2.15rem);
  line-height: 1.05;
}

.score-orbit {
  width: min(210px, 40%);
  aspect-ratio: 1;
  height: auto;
  display: grid;
  place-items: center;
  margin: 8px 0 12px;
  border: 4px solid #101219;
  border-radius: 50%;
  background: #fff7db;
  box-shadow: 8px 8px 0 #101219;
}

.score-orbit span {
  font-family: "Bungee", cursive;
  font-size: clamp(3rem, 7vw, 4.25rem);
  line-height: 1;
}

.share-rank {
  width: max-content;
  max-width: 100%;
  padding: 9px 12px;
  border: 2px solid #101219;
  border-radius: 999px;
  background: #fff7db;
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 700;
  text-transform: uppercase;
}

.share-footer {
  margin-top: auto;
  overflow-wrap: anywhere;
}

.result-actions {
  max-height: calc(100dvh - 100px);
  overflow: auto;
  padding: 20px;
}

.result-actions h3,
.review-header h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1;
}

.result-actions p {
  color: var(--muted);
  line-height: 1.7;
}

.result-actions .contribute-note {
  margin: -2px 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--sun);
  font-size: 0.88rem;
  line-height: 1.45;
}

.contribute-note a {
  color: var(--sun-text);
  font-weight: 900;
  text-decoration: none;
}

.contribute-note a:hover {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.toggle-pill {
  padding: 0 14px;
}

.toggle-pill.active {
  border-color: var(--sun);
  color: #101219;
  background: var(--sun);
}

.share-actions {
  margin-top: 16px;
}

.share-actions button {
  flex: 1 1 165px;
}

.social-row {
  margin: 16px 0;
}

.ghost-button {
  width: 100%;
  margin-top: 10px;
}

.review-screen {
  height: 100%;
  padding: 10px 0 14px;
  overflow: auto;
}

.review-header {
  margin-bottom: 22px;
}

.review-source-note {
  max-width: 680px;
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.review-list {
  display: grid;
  gap: 14px;
}

.review-list article {
  padding: 18px;
}

.review-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.review-list h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.review-list pre {
  margin: 12px 0;
}

.answer-line {
  display: grid;
  gap: 6px;
  color: var(--muted);
}

.answer-line strong {
  color: var(--ink);
}

.source-link {
  width: max-content;
  max-width: 100%;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 2px solid color-mix(in srgb, var(--sun) 70%, var(--line));
  border-radius: var(--radius);
  color: #101219;
  background: var(--sun);
  font-weight: 900;
  text-decoration: none;
}

.source-link:hover {
  transform: translateY(-1px);
}

.status-pill {
  padding: 7px 10px;
  border-radius: 999px;
  color: #101219;
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
  font-weight: 800;
}

.status-pill.ok {
  background: var(--mint);
}

.status-pill.no {
  background: var(--hot);
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 10;
  max-width: min(360px, calc(100vw - 36px));
  padding: 12px 14px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--panel);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.confetti {
  position: fixed;
  top: -20px;
  z-index: 9;
  width: 10px;
  height: 16px;
  pointer-events: none;
  animation: confetti-fall 900ms linear forwards;
}

@keyframes confetti-fall {
  to {
    transform: translateY(105vh) rotate(540deg);
  }
}

@media (max-width: 860px) {
  .hero-layout {
    grid-template-columns: 1fr;
  }

  .result-layout {
    grid-template-columns: minmax(300px, 0.95fr) minmax(260px, 0.8fr);
    gap: 16px;
  }

  .cabinet {
    display: none;
  }

  .hero-layout {
    align-content: center;
  }

  .hero-copy h1 {
    font-size: clamp(2.15rem, 9vw, 3.4rem);
  }

  .hero-lede {
    max-width: 620px;
    margin: 10px 0 12px;
  }

  .hud {
    align-items: stretch;
    flex-direction: column;
  }

  .hud-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .options-grid {
    grid-template-columns: 1fr;
  }

  .share-card {
    width: 100%;
    height: min(430px, calc(100dvh - 94px));
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(100% - 22px, 1180px);
  }

  .topbar {
    min-height: 58px;
    height: 58px;
  }

  .site-footer {
    min-height: 38px;
    gap: 3px 6px;
    font-size: 0.58rem;
  }

  .source-credit,
  .report-credit {
    flex-basis: 100%;
  }

  .footer-divider {
    display: none;
  }

  .brand {
    gap: 10px;
  }

  .brand-mark,
  .avatar {
    width: 38px;
    height: 38px;
    box-shadow: 4px 4px 0 var(--hot);
  }

  .brand-title {
    font-size: 0.98rem;
  }

  .brand-subtitle {
    font-size: 0.7rem;
  }

  .icon-button {
    width: 38px;
    height: 38px;
  }

  .start-screen {
    padding: 6px 0 10px;
  }

  .hero-layout {
    align-content: start;
    padding-top: clamp(12px, 7vh, 54px);
  }

  .wide-title {
    display: none;
  }

  .mobile-title {
    display: inline;
  }

  .hero-copy h1 {
    max-width: 420px;
    font-size: clamp(2.3rem, 13vw, 3.75rem);
    line-height: 0.96;
  }

  .eyebrow {
    margin: 0 0 8px;
    font-size: 0.72rem;
  }

  .hero-lede {
    max-width: 420px;
    margin: 10px 0 14px;
    font-size: 0.92rem;
    line-height: 1.42;
  }

  .start-card {
    max-width: 420px;
    padding: 12px;
    gap: 8px;
  }

  .start-card label {
    font-size: 0.86rem;
  }

  .input-row {
    min-height: 44px;
  }

  .primary-button,
  .secondary-button,
  .ghost-button,
  .toggle-pill {
    min-height: 42px;
  }

  .game-screen {
    padding: 6px 0 8px;
  }

  .game-screen.active {
    grid-template-rows: auto auto minmax(0, 1fr);
  }

  .hud {
    display: grid;
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
  }

  .hud-player {
    min-width: 0;
    gap: 8px;
  }

  .hud-player strong {
    max-width: 88px;
    overflow: hidden;
    font-size: 0.85rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .hud-player small {
    display: none;
  }

  .hud-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 5px;
  }

  .hud-stats div {
    min-height: 38px;
    padding: 5px 4px;
    text-align: center;
  }

  .hud-stats span {
    font-size: 0.55rem;
  }

  .hud-stats strong {
    margin-top: 1px;
    font-size: 0.95rem;
    line-height: 1;
  }

  .progress-track {
    height: 8px;
    margin-bottom: 7px;
  }

  .question-panel {
    padding: 10px;
  }

  .question-meta {
    margin-bottom: 7px;
  }

  .chip {
    padding: 5px 8px;
    font-size: 0.65rem;
  }

  .question-panel h2 {
    margin-bottom: 8px;
    font-size: clamp(1.12rem, 6vw, 1.55rem);
  }

  .code-block {
    margin-bottom: 8px;
    padding: 10px;
    overflow-y: visible;
    font-size: clamp(0.76rem, 3vw, 0.84rem);
    line-height: 1.5;
  }

  .options-grid {
    gap: 7px;
  }

  .question-panel.is-answered .options-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .question-panel.is-answered .option-button {
    min-height: 42px;
    padding: 7px 8px;
    font-size: 0.74rem;
    line-height: 1.22;
  }

  .option-button {
    min-height: clamp(46px, 6.6vh, 52px);
    padding: 9px 10px;
    font-size: 0.86rem;
    line-height: 1.32;
  }

  .feedback {
    margin-top: 7px;
  }

  .feedback-card {
    grid-template-columns: 1fr;
    gap: 9px;
    padding: 9px 10px;
    line-height: 1.34;
  }

  .feedback-card p {
    display: -webkit-box;
    overflow: hidden;
    font-size: 0.78rem;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }

  .next-button {
    width: 100%;
    min-width: 0;
  }

  .result-screen {
    padding: 6px 0 8px;
    overflow: hidden;
  }

  .result-screen.active {
    align-items: stretch;
  }

  .result-layout {
    height: 100%;
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    align-items: stretch;
    gap: 10px;
    overflow: hidden;
  }

  .share-card {
    width: 100%;
    height: 214px;
    padding: 12px;
    border-width: 3px;
    box-shadow: 6px 6px 0 var(--hot), var(--shadow);
  }

  .share-card-top {
    gap: 8px;
    font-size: 0.68rem;
  }

  .stamp {
    padding: 5px 7px;
  }

  .share-name {
    margin-top: 12px;
    max-width: calc(100% - 126px);
    font-size: clamp(1.35rem, 8vw, 1.85rem);
  }

  .share-card h2 {
    max-width: calc(100% - 126px);
    margin: 6px 0;
    font-size: 1rem;
    line-height: 1.12;
  }

  .score-orbit {
    position: absolute;
    top: 60px;
    right: 12px;
    width: 106px;
    border-width: 3px;
    box-shadow: 4px 4px 0 #101219;
  }

  .score-orbit span {
    font-size: 2.05rem;
  }

  .share-rank {
    padding: 5px 8px;
    font-size: 0.78rem;
  }

  .share-footer {
    font-size: 0.68rem;
  }

  .result-actions {
    min-height: 0;
    max-height: none;
    overflow: hidden;
    padding: 12px;
    display: grid;
    gap: 8px;
  }

  .result-actions h3 {
    font-size: 1.5rem;
  }

  .result-actions p {
    margin: 0;
    font-size: 0.83rem;
    line-height: 1.38;
  }

  .result-actions .contribute-note {
    margin: 0;
    padding-left: 9px;
    font-size: 0.74rem;
    line-height: 1.28;
  }

  .toggle-row {
    flex-wrap: nowrap;
    gap: 8px;
  }

  .toggle-pill {
    flex: 1 1 0;
    min-width: 0;
    padding: 0 8px;
  }

  .share-actions {
    margin-top: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .share-actions button {
    flex: unset;
    min-height: 38px;
    font-size: 0.82rem;
  }

  #nativeShare {
    grid-column: 1 / -1;
  }

  .social-row {
    margin: 0;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 8px;
  }

  .social-row a {
    width: 36px;
    height: 36px;
  }

  .ghost-button {
    min-height: 38px;
    margin-top: 0;
    font-size: 0.82rem;
  }
}

@media (max-width: 540px) {
  .brand-title {
    max-width: 180px;
  }

  .hero-copy h1 {
    font-size: clamp(2.2rem, 13vw, 3.35rem);
  }

  .preview-options {
    grid-template-columns: 1fr;
  }

  .question-panel {
    min-height: auto;
  }

  .option-button {
    min-height: 52px;
  }

  .share-card {
    min-height: 0;
    padding: 12px;
  }

  .score-orbit {
    width: 106px;
    height: auto;
  }

  .score-orbit span {
    font-size: 2.05rem;
  }

  .review-header {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) and (max-height: 740px) {
  .question-panel {
    overflow-y: auto;
  }

  .question-meta {
    margin-bottom: 5px;
  }

  .question-panel h2 {
    margin-bottom: 6px;
    font-size: clamp(1rem, 5vw, 1.28rem);
  }

  .code-block {
    margin-bottom: 6px;
    padding: 8px;
    font-size: 0.7rem;
    line-height: 1.42;
  }

  .options-grid {
    gap: 6px;
  }

  .option-button {
    min-height: 42px;
    padding: 7px 8px;
    font-size: 0.78rem;
    line-height: 1.24;
  }

  .question-panel.is-answered .option-button {
    min-height: 38px;
    padding: 6px;
    font-size: 0.68rem;
  }

  .feedback-card {
    padding: 8px;
  }

  .feedback-card p {
    -webkit-line-clamp: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}