@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=Syne:wght@600;700;800&display=swap");

:root {
  --bg: #05131c;
  --bg-panel: rgba(5, 23, 34, 0.82);
  --bg-panel-strong: rgba(5, 23, 34, 0.94);
  --bg-soft: rgba(10, 43, 58, 0.72);
  --line: rgba(118, 207, 212, 0.22);
  --line-strong: rgba(118, 207, 212, 0.5);
  --text: #eff9fb;
  --muted: #9cbcc5;
  --accent: #7ce5d8;
  --accent-strong: #3dd0d3;
  --gold: #f3c96b;
  --gold-strong: #f1a937;
  --rose: #ff8e73;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(60, 157, 181, 0.18), transparent 32%),
    radial-gradient(circle at top right, rgba(241, 169, 55, 0.16), transparent 26%),
    linear-gradient(180deg, #06131c 0%, #071b28 45%, #05131c 100%);
  color: var(--text);
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
}

body {
  position: relative;
  overflow-x: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.background-grid,
.background-glow {
  pointer-events: none;
  position: fixed;
  inset: 0;
}

.background-grid {
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(124, 229, 216, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 229, 216, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 1), transparent 78%);
}

.background-glow {
  filter: blur(48px);
  opacity: 0.5;
}

.background-glow-left {
  background: radial-gradient(circle, rgba(61, 208, 211, 0.22), transparent 58%);
  transform: translate(-18%, -22%);
}

.background-glow-right {
  background: radial-gradient(circle, rgba(241, 169, 55, 0.18), transparent 60%);
  transform: translate(28%, -18%);
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 64px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 28px;
}

.brand-title,
.card-title,
.modal-title,
.hero-title,
.score-title {
  margin: 0;
  font-family: "Syne", "Avenir Next", sans-serif;
  letter-spacing: -0.04em;
}

.brand-title {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  line-height: 0.98;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.panel,
.modal-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(10, 33, 45, 0.92), rgba(5, 22, 32, 0.94));
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.panel::before,
.modal-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(124, 229, 216, 0.06), transparent 36%),
    linear-gradient(320deg, rgba(241, 169, 55, 0.08), transparent 34%);
  pointer-events: none;
}

.panel-inner,
.modal-inner {
  position: relative;
  padding: 28px;
}

.welcome-layout,
.results-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.hero-card {
  min-height: 100%;
}

.hero-title {
  margin-bottom: 14px;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1;
}

.hero-copy,
.subtle-copy,
.stat-label,
.table-note,
.empty-state-copy {
  color: var(--muted);
}

.hero-copy {
  max-width: 48rem;
  line-height: 1.65;
  margin: 0 0 28px;
}

.feature-strip,
.summary-strip,
.status-strip,
.line-grid,
.stat-grid,
.results-strip {
  display: grid;
  gap: 14px;
}

.feature-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 28px;
}

.feature-chip,
.stat-card,
.mini-card,
.line-card,
.summary-card,
.wallet-card,
.feedback-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
}

.feature-chip,
.stat-card,
.line-card,
.summary-card,
.wallet-card,
.feedback-card,
.mini-card {
  padding: 18px;
}

.feature-chip strong,
.stat-card strong,
.line-card strong,
.summary-card strong,
.wallet-card strong,
.score-value,
.section-pill strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.feature-chip span,
.line-card p,
.summary-card p,
.feedback-card p,
.mini-card p {
  color: var(--muted);
  line-height: 1.5;
}

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

.name-form {
  display: grid;
  gap: 14px;
}

.text-input {
  width: 100%;
  border: 1px solid rgba(124, 229, 216, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 16px 18px;
  outline: none;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.text-input:focus {
  border-color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button-row-tight {
  gap: 10px;
}

.primary-button,
.secondary-button,
.ghost-button,
.choice-button {
  border: 0;
  border-radius: 999px;
  padding: 14px 20px;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease;
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.choice-button:hover {
  transform: translateY(-2px);
}

.primary-button {
  color: #06202a;
  background: linear-gradient(135deg, var(--gold), #ffd989);
  box-shadow: 0 14px 30px rgba(241, 169, 55, 0.28);
}

.secondary-button {
  color: var(--text);
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.14), rgba(61, 208, 211, 0.28));
  border: 1px solid rgba(124, 229, 216, 0.16);
}

.ghost-button {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.primary-button:disabled,
.secondary-button:disabled,
.ghost-button:disabled,
.choice-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.subtle-copy {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.mini-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.leaderboard-table,
.analysis-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.leaderboard-table th,
.leaderboard-table td,
.analysis-table th,
.analysis-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.leaderboard-table th,
.analysis-table th {
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.leaderboard-scroll,
.table-shell {
  overflow-x: auto;
}

.table-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.table-caption h3,
.card-title,
.modal-title,
.score-title {
  margin: 0;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
}

.game-panel-inner {
  display: grid;
  gap: 18px;
}

.game-header-compact {
  margin-bottom: 0;
  align-items: center;
}

.game-heading-block {
  display: grid;
  gap: 8px;
}

.game-heading-block .hero-title {
  margin-bottom: 0;
  font-size: clamp(1.9rem, 2.7vw, 2.6rem);
}

.game-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.status-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.status-strip-compact {
  gap: 12px;
  min-width: min(430px, 100%);
}

.stat-card span,
.mini-card span,
.wallet-card span {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.stat-card strong,
.mini-card strong,
.wallet-card strong {
  margin-top: 10px;
  margin-bottom: 0;
  font-size: 1.4rem;
}

.wallet-display,
.coin-badge,
.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.coin-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  filter: drop-shadow(0 8px 12px rgba(241, 169, 55, 0.22));
}

.score-badge .coin-icon {
  width: 28px;
  height: 28px;
}

.section-callout {
  margin-bottom: 22px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.08), rgba(241, 169, 55, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.section-pill {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  width: fit-content;
  max-width: 100%;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 14px;
}

.section-pill-compact {
  margin-bottom: 0;
}

.play-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: 18px;
  align-items: stretch;
}

.video-column,
.decision-column {
  display: grid;
  gap: 14px;
  min-height: 0;
  align-content: start;
}

.video-shell {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius-xl) - 6px);
  background:
    radial-gradient(circle at top, rgba(124, 229, 216, 0.1), transparent 45%),
    rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(124, 229, 216, 0.16);
}

.game-video-shell {
  height: auto;
  min-height: 0;
  padding: 8px;
}

.video-shell video {
  display: block;
  width: 100%;
  border-radius: inherit;
  background: #02080c;
}

.game-video-shell video {
  max-height: min(52vh, 470px);
  object-fit: contain;
}

.decision-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.round-note {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.08), rgba(241, 169, 55, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.round-note strong {
  display: block;
  font-size: 1rem;
}

.decision-copy {
  margin: 0;
}

.line-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 18px 0;
}

.line-card {
  display: grid;
  gap: 12px;
  padding: 18px 18px 16px;
}

.line-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.line-card-header strong {
  margin-bottom: 0;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  line-height: 1.2;
}

.line-card-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-width: 66px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 700;
}

.line-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.45;
}

.line-card-bar {
  display: block;
  overflow: hidden;
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.line-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.line-fill-track {
  background: linear-gradient(90deg, #6de4d5, #1cbebf);
}

.line-fill-cascade {
  background: linear-gradient(90deg, #ffd987, #f1a937);
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.choice-grid-compact {
  grid-template-columns: 1fr;
  margin-top: 0;
}

.wager-toggle {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.wager-toggle input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--gold-strong);
  flex-shrink: 0;
}

.wager-copy {
  display: grid;
  gap: 4px;
}

.wager-copy strong {
  font-size: 1rem;
}

.wager-copy span {
  color: var(--muted);
  line-height: 1.45;
  font-size: 0.92rem;
}

.choice-button {
  display: grid;
  gap: 10px;
  padding: 18px;
  text-align: left;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.choice-topline {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.choice-topline strong {
  display: block;
  font-size: 1.2rem;
  margin: 0;
}

.choice-button span {
  display: block;
}

.choice-description {
  color: var(--muted);
  line-height: 1.45;
}

.choice-percent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 68px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.95rem;
  font-weight: 700;
}

.choice-line-meta {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.choice-line-bar {
  display: block;
  overflow: hidden;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.choice-line-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.choice-line-fill-track {
  background: linear-gradient(90deg, #6de4d5, #1cbebf);
}

.choice-line-fill-cascade {
  background: linear-gradient(90deg, #ffd987, #f1a937);
}

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

.compact-card {
  padding: 16px;
}

.compact-card strong {
  font-size: 1.1rem;
}

.help-inline-button {
  width: 100%;
  justify-content: center;
}

.choice-button-track:hover {
  border-color: rgba(61, 208, 211, 0.58);
  box-shadow: 0 18px 38px rgba(61, 208, 211, 0.18);
}

.choice-button-cascade:hover {
  border-color: rgba(241, 169, 55, 0.58);
  box-shadow: 0 18px 38px rgba(241, 169, 55, 0.16);
}

.choice-button-live-line {
  gap: 8px;
  padding: 16px 18px 18px;
  border-radius: 36px;
}

.choice-button-live-line .choice-topline {
  align-items: center;
}

.choice-button-live-line .choice-topline strong {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  line-height: 1.15;
}

.choice-button-live-line .choice-description {
  font-size: clamp(0.9rem, 1.2vw, 1rem);
  line-height: 1.35;
}

.choice-button-live-line .choice-percent {
  min-width: 64px;
  padding: 6px 10px;
  font-size: 0.95rem;
}

.choice-button-live-line .choice-line-meta {
  font-size: 0.78rem;
}

.play-stage-market {
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.92fr);
}

.decision-card-market {
  gap: 12px;
  padding: 16px;
}

.play-stage-market .choice-grid-compact {
  gap: 12px;
}

.play-stage-market .decision-meta-grid {
  gap: 10px;
}

.play-stage-market .compact-card {
  padding: 14px;
}

.play-stage-market .compact-card p {
  font-size: 0.9rem;
  line-height: 1.4;
}

.play-stage-market .game-video-shell video {
  max-height: min(46vh, 390px);
}

.feedback-layout {
  display: grid;
  gap: 24px;
}

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

.feedback-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(124, 229, 216, 0.12);
  color: var(--accent);
  border: 1px solid rgba(124, 229, 216, 0.2);
}

.feedback-pill.loss {
  background: rgba(255, 142, 115, 0.12);
  color: var(--rose);
  border-color: rgba(255, 142, 115, 0.2);
}

.score-panel {
  display: grid;
  gap: 22px;
}

.score-shell {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.09), rgba(241, 169, 55, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.score-title {
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.score-value {
  margin: 0;
  font-size: 2.2rem;
}

.summary-strip,
.stat-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.results-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.help-modal-panel {
  width: min(1120px, 100%);
}

.help-modal-inner {
  gap: 18px;
}

.help-section-grid,
.help-tips-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: center;
}

.help-copy-block,
.help-tip-card {
  display: grid;
  gap: 10px;
}

.help-detector-card,
.help-compare-card,
.help-tip-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.help-detector-card {
  display: grid;
  gap: 12px;
}

.help-detector-visual,
.help-visual-box {
  position: relative;
  overflow: hidden;
  min-height: 240px;
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at top, rgba(124, 229, 216, 0.08), transparent 42%),
    #061118;
  border: 1px solid rgba(124, 229, 216, 0.18);
}

.help-detector-string,
.help-wire {
  position: absolute;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(124, 229, 216, 0.18), rgba(255, 255, 255, 0.08));
}

.help-detector-string:nth-child(1),
.help-wire:nth-child(1) {
  left: 14%;
}

.help-detector-string:nth-child(2),
.help-wire:nth-child(2) {
  left: 28%;
}

.help-detector-string:nth-child(3),
.help-wire:nth-child(3) {
  left: 42%;
}

.help-detector-string:nth-child(4),
.help-wire:nth-child(4) {
  left: 56%;
}

.help-detector-string:nth-child(5) {
  left: 70%;
}

.help-detector-string:nth-child(6) {
  left: 84%;
}

.help-detector-glow,
.help-dot,
.help-burst-core,
.help-burst-ring {
  position: absolute;
  border-radius: 999px;
}

.help-detector-glow {
  width: 20px;
  height: 20px;
  box-shadow: 0 0 18px currentColor;
}

.help-detector-glow-red {
  left: 36%;
  top: 34%;
  background: #ff6b6b;
  color: #ff6b6b;
}

.help-detector-glow-yellow {
  left: 45%;
  top: 43%;
  background: #ffd75f;
  color: #ffd75f;
}

.help-detector-glow-green {
  left: 55%;
  top: 51%;
  background: #73f0a6;
  color: #73f0a6;
}

.help-detector-glow-blue {
  left: 63%;
  top: 59%;
  background: #73c8ff;
  color: #73c8ff;
}

.help-visual-caption {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.help-compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.help-compare-card {
  display: grid;
  gap: 14px;
}

.help-track-streak {
  position: absolute;
  left: 14%;
  top: 22%;
  width: 72%;
  height: 4px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1), #ffffff 16%, #ffffff 84%, rgba(255, 255, 255, 0.1));
  transform: rotate(-26deg);
  transform-origin: left center;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.35);
}

.help-dot {
  width: 12px;
  height: 12px;
  box-shadow: 0 0 14px currentColor;
}

.help-dot-red {
  left: 28%;
  top: 34%;
  background: #ff6b6b;
  color: #ff6b6b;
}

.help-dot-yellow {
  left: 41%;
  top: 44%;
  background: #ffd75f;
  color: #ffd75f;
}

.help-dot-green {
  left: 56%;
  top: 54%;
  background: #73f0a6;
  color: #73f0a6;
}

.help-dot-blue {
  left: 69%;
  top: 65%;
  background: #73c8ff;
  color: #73c8ff;
}

.help-burst-core {
  width: 18px;
  height: 18px;
  left: calc(50% - 9px);
  top: calc(50% - 9px);
  background: #ffffff;
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.35);
}

.help-burst-ring {
  border: 3px solid;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.help-burst-ring-red {
  width: 48px;
  height: 48px;
  border-color: rgba(255, 107, 107, 0.92);
}

.help-burst-ring-yellow {
  width: 86px;
  height: 86px;
  border-color: rgba(255, 215, 95, 0.88);
}

.help-burst-ring-green {
  width: 124px;
  height: 124px;
  border-color: rgba(115, 240, 166, 0.74);
}

.help-burst-ring-blue {
  width: 164px;
  height: 164px;
  border-color: rgba(115, 200, 255, 0.54);
}

.help-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  display: grid;
  gap: 12px;
  line-height: 1.55;
}

.mode-switcher {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.mode-toggle {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  text-align: left;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  text-decoration: none;
}

.mode-toggle strong {
  font-size: 1.05rem;
}

.mode-toggle span {
  color: var(--muted);
  font-size: 0.92rem;
}

.mode-toggle.is-active {
  border-color: rgba(124, 229, 216, 0.44);
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.14), rgba(61, 208, 211, 0.2));
  box-shadow: 0 18px 36px rgba(61, 208, 211, 0.12);
}

.quiz-layout,
.quiz-header,
.quiz-main-column,
.quiz-video-card,
.quiz-sidebar-card,
.quiz-review-card {
  display: grid;
  gap: 18px;
}

.quick-quiz-panel .game-panel-inner {
  gap: 22px;
}

.quick-quiz-landing {
  grid-template-columns: minmax(0, 1.2fr) minmax(390px, 0.8fr);
  align-items: start;
}

.quick-quiz-landing .hero-card,
.quick-quiz-landing > .panel {
  min-height: 0;
}

.quick-quiz-landing .hero-card .panel-inner {
  padding: clamp(26px, 3vw, 38px);
}

.quick-quiz-landing .hero-title {
  max-width: 13ch;
  letter-spacing: -0.035em;
}

.quick-quiz-landing .feature-strip {
  margin: 30px 0 24px;
}

.quick-quiz-landing .feature-chip {
  min-height: 148px;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 18px;
}

.quick-quiz-landing > .panel .panel-inner {
  padding: 24px;
}

.quick-quiz-landing .leaderboard-scroll {
  margin: 0 -4px;
  padding: 0 4px;
}

.quick-quiz-landing .leaderboard-table {
  min-width: 0;
  table-layout: auto;
}

.quick-quiz-landing .leaderboard-table th,
.quick-quiz-landing .leaderboard-table td {
  padding: 13px 10px;
}

.quick-quiz-landing .leaderboard-table th:last-child,
.quick-quiz-landing .leaderboard-table td:last-child {
  display: none;
}

.quick-quiz-landing .leaderboard-table th {
  white-space: nowrap;
}

.quick-quiz-panel {
  max-width: 1180px;
  margin: 0 auto;
}

.quick-quiz-panel .game-header {
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.quick-quiz-panel .status-strip {
  grid-template-columns: repeat(2, minmax(138px, 1fr));
}

.quick-quiz-panel .stat-card,
.quick-quiz-panel .wallet-card {
  min-height: 92px;
  display: grid;
  align-content: center;
  padding: 14px 16px;
}

.quick-quiz-panel .wallet-card {
  border-color: rgba(241, 169, 55, 0.24);
  background: linear-gradient(135deg, rgba(241, 169, 55, 0.14), rgba(255, 255, 255, 0.035));
}

.quick-quiz-stage {
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  align-items: center;
  gap: clamp(20px, 3vw, 34px);
}

.quick-quiz-stage .game-video-shell {
  padding: 10px;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.22);
}

.quick-quiz-decision {
  align-self: stretch;
  display: grid;
  align-content: center;
  gap: 18px;
  min-height: 320px;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid rgba(124, 229, 216, 0.16);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(124, 229, 216, 0.08), rgba(255, 255, 255, 0.025));
}

.quick-quiz-decision .round-note {
  padding: 16px 18px;
}

.quick-quiz-decision .wager-toggle {
  transition: border-color 160ms ease, background 160ms ease;
}

.quick-quiz-decision .wager-toggle:has(input:checked) {
  border-color: rgba(241, 169, 55, 0.5);
  background: linear-gradient(135deg, rgba(241, 169, 55, 0.16), rgba(255, 255, 255, 0.05));
}

.quick-quiz-choice-grid {
  grid-template-columns: 1fr;
  gap: 14px;
}

.quick-quiz-choice-grid .choice-button {
  min-height: 88px;
  font-size: 1.12rem;
  padding: 17px 18px;
}

.quick-quiz-choice-grid .choice-button:hover {
  transform: translateY(-2px);
}

.quick-quiz-feedback-panel {
  width: min(100%, 860px);
  margin: clamp(24px, 6vh, 72px) auto;
}

.quick-quiz-feedback-panel .feedback-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  text-align: left;
}

.quick-quiz-feedback-panel .line-grid {
  width: min(100%, 680px);
  margin: 0 auto;
}

.quick-quiz-feedback-panel .feedback-layout {
  gap: 28px;
  padding: clamp(24px, 4vw, 42px);
  text-align: center;
}

.quick-quiz-feedback-panel .feedback-pill {
  justify-content: center;
  margin-top: 18px;
}

.hot-streak-celebration {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  overflow: hidden;
  padding: 18px 22px;
  border: 1px solid rgba(241, 169, 55, 0.56);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 217, 135, 0.35), transparent 46%),
    linear-gradient(135deg, rgba(241, 169, 55, 0.24), rgba(255, 142, 115, 0.15));
  box-shadow: 0 12px 34px rgba(241, 169, 55, 0.18);
  animation: hot-streak-pop 520ms cubic-bezier(0.2, 1.25, 0.45, 1) both;
}

.hot-streak-celebration > div {
  display: grid;
  gap: 4px;
  text-align: left;
}

.hot-streak-celebration .eyebrow {
  color: #ffe4a6;
}

.hot-streak-celebration strong {
  font-size: 1.18rem;
}

.hot-streak-celebration > div > span {
  color: var(--text);
  font-size: 0.92rem;
}

.hot-streak-sparks {
  position: relative;
  display: block;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
}

.hot-streak-sparks::before {
  content: "✦";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff0bb;
  font-size: 2.35rem;
  text-shadow: 0 0 16px rgba(255, 217, 135, 0.86);
  animation: hot-streak-core 900ms ease-in-out infinite alternate;
}

.hot-streak-sparks i {
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #ffd987;
  box-shadow: 0 0 10px rgba(255, 217, 135, 0.94);
  animation: hot-streak-spark 720ms ease-out both;
}

.hot-streak-sparks i:nth-child(1) { --spark-x: -20px; --spark-y: -18px; animation-delay: 70ms; }
.hot-streak-sparks i:nth-child(2) { --spark-x: 19px; --spark-y: -15px; animation-delay: 115ms; }
.hot-streak-sparks i:nth-child(3) { --spark-x: 23px; --spark-y: 14px; animation-delay: 40ms; }
.hot-streak-sparks i:nth-child(4) { --spark-x: -18px; --spark-y: 19px; animation-delay: 145ms; }
.hot-streak-sparks i:nth-child(5) { --spark-x: 0; --spark-y: -27px; animation-delay: 10ms; }

.quick-quiz-feedback-panel .button-row {
  justify-content: center;
  margin-top: 4px;
}

.quick-quiz-results {
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  align-items: start;
}

.quick-quiz-results .score-panel {
  gap: 28px;
}

.quick-quiz-results .score-shell {
  grid-template-columns: minmax(0, 1fr) minmax(310px, 0.72fr);
  align-items: stretch;
}

.quick-results-scoreboard {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.quick-result-tile {
  display: grid;
  align-content: center;
  gap: 8px;
  min-height: 144px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.035);
}

.quick-result-tile > span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.quick-result-tile strong {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1;
}

.quick-result-tile p {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
}

.quick-result-coins {
  border-color: rgba(241, 169, 55, 0.4);
  background: linear-gradient(145deg, rgba(241, 169, 55, 0.22), rgba(255, 255, 255, 0.045));
}

.quick-result-coins .coin-icon {
  width: 30px;
  height: 30px;
}

.quick-result-score {
  border-color: rgba(124, 229, 216, 0.3);
  background: linear-gradient(145deg, rgba(124, 229, 216, 0.14), rgba(255, 255, 255, 0.035));
}

.quick-results-details {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quick-quiz-results .summary-card {
  min-height: 126px;
}

.quick-review-heading {
  display: grid;
  gap: 6px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.quick-review-heading .subtle-copy {
  margin: 0;
}

.quick-quiz-results .quiz-review-grid {
  margin-top: -10px;
}

.quick-quiz-stat-grid {
  grid-template-columns: 1fr;
  margin-top: 18px;
}

.quick-quiz-tag {
  display: inline-flex;
  width: fit-content;
  margin-top: 12px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.quick-quiz-tag-pid-good {
  color: var(--accent);
  background: rgba(124, 229, 216, 0.14);
  border-color: rgba(124, 229, 216, 0.3);
}

.quick-quiz-tag-pid-uncertain {
  color: var(--gold);
  background: rgba(241, 169, 55, 0.14);
  border-color: rgba(241, 169, 55, 0.3);
}

.quick-quiz-tag-pid-bad {
  color: var(--rose);
  background: rgba(255, 142, 115, 0.13);
  border-color: rgba(255, 142, 115, 0.3);
}

.quiz-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 0.58fr);
  gap: 22px;
  align-items: start;
}

.quiz-board-panel {
  overflow: visible;
}

.quiz-video-grid,
.quiz-review-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.quiz-video-card,
.quiz-review-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.quiz-video-shell {
  padding: 10px;
}

.quiz-video-shell video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  max-height: min(68vh, 720px);
  background: #02080c;
}

.quiz-sidebar {
  position: sticky;
  top: 18px;
  align-self: start;
  height: fit-content;
}

.quiz-sidebar-card {
  gap: 12px;
  padding: 14px;
  max-height: calc(100vh - 36px);
  overflow: auto;
  scrollbar-width: thin;
}

.quiz-sidebar-card .round-note,
.quiz-sidebar-card .mini-card,
.quiz-sidebar-card .quiz-status-item {
  padding: 10px 12px;
}

.quiz-sidebar-card .mini-card strong,
.quiz-sidebar-card .quiz-status-item strong {
  font-size: 0.98rem;
}

.quiz-sidebar-card .mini-card p,
.quiz-sidebar-card .quiz-status-item span,
.quiz-sidebar-card .decision-copy {
  font-size: 0.84rem;
  line-height: 1.35;
}

.quiz-sidebar-card .button-row {
  gap: 10px;
}

.quiz-sidebar-card .primary-button,
.quiz-sidebar-card .ghost-button {
  padding: 12px 16px;
  font-size: 0.94rem;
}

.quiz-submit-footer {
  padding-bottom: 8px;
}

.quiz-submit-card strong {
  margin-bottom: 10px;
}

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

.quiz-choice-button,
.score-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.quiz-choice-button.is-selected {
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.2), rgba(61, 208, 211, 0.26));
  border-color: rgba(124, 229, 216, 0.44);
}

.quiz-choice-button-track.is-selected {
  box-shadow: 0 16px 28px rgba(61, 208, 211, 0.16);
}

.quiz-choice-button-cascade.is-selected {
  background: linear-gradient(135deg, rgba(255, 217, 135, 0.2), rgba(241, 169, 55, 0.28));
  border-color: rgba(241, 169, 55, 0.42);
  box-shadow: 0 16px 28px rgba(241, 169, 55, 0.14);
}

.quiz-choice-button-undecided.is-selected {
  background: linear-gradient(135deg, rgba(156, 188, 197, 0.16), rgba(76, 104, 114, 0.26));
  border-color: rgba(156, 188, 197, 0.34);
}

.quiz-status-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.quiz-status-list,
.quiz-review-meta {
  display: grid;
  gap: 10px;
}

.quiz-status-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.quiz-status-item strong,
.quiz-review-header .card-title {
  display: block;
  margin-bottom: 4px;
}

.quiz-status-item span {
  color: var(--muted);
}

.quiz-status-pill,
.quiz-review-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
}

.quiz-status-pill-track,
.quiz-review-pill.is-correct {
  color: var(--accent);
  background: rgba(124, 229, 216, 0.14);
  border: 1px solid rgba(124, 229, 216, 0.24);
}

.quiz-status-pill-cascade {
  color: var(--gold);
  background: rgba(241, 169, 55, 0.14);
  border: 1px solid rgba(241, 169, 55, 0.24);
}

.quiz-status-pill-undecided,
.quiz-review-pill.is-wrong {
  color: var(--muted);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.quiz-review-pill.is-wrong {
  color: var(--rose);
  background: rgba(255, 142, 115, 0.12);
  border-color: rgba(255, 142, 115, 0.22);
}

.score-stack {
  display: grid;
  gap: 10px;
  justify-items: end;
}

.score-badge-quiz {
  min-width: 152px;
  justify-content: center;
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(124, 229, 216, 0.12), rgba(61, 208, 211, 0.22));
  border: 1px solid rgba(124, 229, 216, 0.18);
}

.score-caption {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.score-pill {
  min-width: 86px;
  font-weight: 700;
}

.results-strip-quiz {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding: 22px;
  background: rgba(1, 8, 12, 0.74);
  backdrop-filter: blur(10px);
}

.modal-backdrop.is-open {
  display: flex;
}

.modal-panel {
  width: min(1280px, 100%);
  max-height: min(92vh, 980px);
}

.modal-inner {
  display: grid;
  gap: 22px;
  max-height: inherit;
  overflow: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.modal-grid {
  display: grid;
  gap: 18px;
}

.summary-card strong {
  font-size: 1.8rem;
}

.pill-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.88rem;
}

.rank-highlight {
  color: var(--gold);
}

.empty-state {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.12);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.appear {
  animation: rise-in 420ms ease both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hot-streak-pop {
  0% { opacity: 0; transform: scale(0.9) translateY(12px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes hot-streak-core {
  from { transform: scale(0.88) rotate(-8deg); }
  to { transform: scale(1.12) rotate(8deg); }
}

@keyframes hot-streak-spark {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.25); }
  35% { opacity: 1; }
  100% { opacity: 0; transform: translate(calc(-50% + var(--spark-x)), calc(-50% + var(--spark-y))) scale(0.75); }
}

.noscript-banner {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 100;
  padding: 16px 18px;
  border-radius: 16px;
  color: #08141b;
  background: #ffd989;
}

@media (max-width: 980px) {
  .page-shell {
    width: min(100vw - 20px, 1200px);
    padding-top: 18px;
  }

  .welcome-layout,
  .results-layout,
  .summary-strip,
  .results-strip,
  .status-strip,
  .feedback-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }

  .feature-strip,
  .choice-grid,
  .line-grid,
  .mini-card-grid,
  .decision-meta-grid,
  .play-stage,
  .quiz-stage,
  .quiz-video-grid,
  .quiz-review-grid,
  .mode-switcher,
  .quiz-choice-grid,
  .help-compare-grid,
  .help-section-grid,
  .help-tips-grid {
    grid-template-columns: 1fr;
  }

  .topbar,
  .game-header,
  .table-caption,
  .modal-header,
  .score-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .modal-backdrop {
    padding: 12px;
  }

  .panel-inner,
  .modal-inner {
    padding: 20px;
  }

  .status-strip-compact {
    min-width: 0;
  }

  .quick-quiz-landing,
  .quick-quiz-results {
    grid-template-columns: 1fr;
  }

  .quick-quiz-landing .hero-title {
    max-width: none;
  }

  .quick-quiz-landing .feature-chip {
    min-height: 0;
  }

  .quick-quiz-panel .status-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .quick-quiz-stage {
    gap: 18px;
  }

  .quick-quiz-decision {
    min-height: 0;
  }

  .quick-quiz-results .results-strip,
  .quick-quiz-feedback-panel .feedback-grid {
    grid-template-columns: 1fr;
  }

  .quick-quiz-results .score-shell,
  .quick-results-scoreboard {
    grid-template-columns: 1fr;
  }

  .game-video-shell video {
    max-height: none;
  }

  .choice-button-live-line {
    border-radius: 28px;
  }

  .line-card-header {
    align-items: center;
  }
}

@media (min-width: 981px) and (min-height: 720px) {
  .page-shell {
    padding-top: 18px;
    padding-bottom: 28px;
  }

  .topbar {
    margin-bottom: 18px;
  }

  .game-panel {
    min-height: calc(100vh - 126px);
  }

  .game-panel-inner {
    min-height: calc(100vh - 126px);
    padding: 22px;
    gap: 16px;
  }

  .play-stage {
    min-height: 0;
  }

  .game-video-shell video {
    max-height: min(50vh, 430px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* Presentation introduction and collaborator demo */
.brand-title { font-size: clamp(1.3rem, 2.4vw, 2.1rem); }
.mode-switcher { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.site-credits { margin-top: 30px; color: var(--muted); text-align: center; font-size: .82rem; line-height: 1.8; }
.site-credits a, .intro-science a, .intro-credits a { color: var(--accent); text-underline-offset: 4px; }
.demo-facts { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0; }
.demo-facts span, .intro-badge { border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; color: var(--accent); font-size: .82rem; }
.demo-aside-heading { margin-top: 30px; }
.demo-mechanics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.demo-mechanics article { padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: rgba(124, 229, 216, .035); }
.demo-mechanics strong { display: block; font-size: 1rem; }
.demo-mechanics p { color: var(--muted); font-size: .86rem; line-height: 1.55; margin: 8px 0 0; }
.mechanic-number { display: block; color: var(--gold); font-size: .74rem; margin-bottom: 8px; font-weight: 700; }
.crowd-bonus-tag { display: block; width: fit-content; font-size: .8rem; padding: 6px 10px; background: rgba(243, 201, 107, .16); border: 1px solid rgba(243, 201, 107, .45); border-radius: 999px; color: #ffe0a0; }
.crowd-bonus-celebration { display: flex; gap: 18px; align-items: center; border-radius: 20px; padding: 20px; border: 1px solid rgba(243, 201, 107, .5); background: linear-gradient(130deg, rgba(243, 201, 107, .17), rgba(124, 229, 216, .08)); }
.crowd-bonus-celebration > span { font-size: 2rem; color: var(--gold); }
.crowd-bonus-celebration strong { color: #ffe0a0; }
.crowd-bonus-celebration p { margin: 6px 0 0; color: var(--muted); line-height: 1.5; }
.intro-open { overflow: hidden; }
.intro-backdrop { position: fixed; inset: 0; z-index: 100; padding: 24px; display: flex; align-items: center; justify-content: center; background: rgba(1, 8, 12, .9); backdrop-filter: blur(14px); }
.intro-panel { width: min(1120px, 100%); max-height: calc(100dvh - 48px); overflow: auto; padding: clamp(24px, 3.4vw, 44px); border: 1px solid rgba(124, 229, 216, .3); border-radius: 30px; background: radial-gradient(ellipse at top right, rgba(61, 208, 211, .16), transparent 55%), #071b28; box-shadow: var(--shadow); }
.intro-panel:focus { outline: none; }
.intro-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.intro-heading h2 { margin: 10px 0 0; font-family: "Syne", sans-serif; font-size: clamp(2.7rem, 5.3vw, 4.8rem); line-height: 1; letter-spacing: -.05em; }
.intro-heading h2 span { color: var(--accent); }
.intro-badge { white-space: nowrap; margin-top: 6px; }
.intro-lead { font-size: clamp(1rem, 1.6vw, 1.2rem); color: var(--muted); max-width: 65ch; line-height: 1.6; margin: 22px 0; }
.intro-science { display: grid; grid-template-columns: 1.15fr 1fr; gap: 28px; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.intro-panel h3 { margin: 0; font-size: 1.12rem; }
.intro-science p, .intro-game-heading > p:last-child { color: var(--muted); font-size: .9rem; line-height: 1.65; }
.intro-science a { font-size: .85rem; }
.intro-shapes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.intro-shapes article { border-radius: 18px; padding: 16px; background: rgba(255, 255, 255, .025); border: 1px solid var(--line); }
.intro-shapes article strong { color: var(--accent); font-size: 1.05rem; }
.intro-shapes article:last-child strong { color: var(--gold); }
.signature-track, .signature-cascade { position: relative; height: 72px; margin-bottom: 14px; overflow: hidden; background-image: radial-gradient(rgba(156, 188, 197, .2) 1px, transparent 1px); background-size: 14px 14px; border-radius: 10px; }
.signature-track::before { content: ""; position: absolute; width: 85%; height: 3px; top: 50%; left: 8%; transform: rotate(-14deg); background: linear-gradient(90deg, var(--rose), var(--gold), var(--accent), #73c8ff); box-shadow: 0 0 16px var(--accent); }
.signature-track i, .signature-cascade i { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 18px currentColor; }
.signature-track i:nth-child(1) { left: 12%; top: 58%; background: var(--rose); color: var(--rose); }
.signature-track i:nth-child(2) { left: 28%; top: 48%; background: var(--gold); color: var(--gold); }
.signature-track i:nth-child(3) { left: 45%; top: 37%; color: var(--accent); }
.signature-track i:nth-child(4) { left: 63%; top: 26%; color: var(--accent); }
.signature-track i:nth-child(5) { left: 80%; top: 15%; background: #73c8ff; color: #73c8ff; }
.signature-cascade { background-color: rgba(243, 201, 107, .025); }
.signature-cascade::before { content: ""; position: absolute; width: 58px; height: 58px; top: 6px; left: calc(50% - 29px); border-radius: 50%; border: 1px solid rgba(243, 201, 107, .5); box-shadow: 0 0 22px rgba(243, 201, 107, .16), inset 0 0 20px rgba(243, 201, 107, .2); }
.signature-cascade i:nth-child(1) { top: 29px; left: calc(50% - 6px); background: var(--rose); color: var(--rose); }
.signature-cascade i:nth-child(2) { top: 15px; left: calc(50% - 20px); background: var(--gold); color: var(--gold); }
.signature-cascade i:nth-child(3) { top: 41px; left: calc(50% - 22px); background: var(--gold); color: var(--gold); }
.signature-cascade i:nth-child(4) { top: 19px; left: calc(50% + 9px); color: var(--accent); }
.signature-cascade i:nth-child(5) { top: 42px; left: calc(50% + 12px); background: #73c8ff; color: #73c8ff; }
.intro-game-heading { margin: 22px 0 16px; }
.intro-game-heading > p:last-child { margin: 8px 0 0; }
.intro-panel .demo-mechanics { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.intro-bottom { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 24px; }
.intro-credits { display: grid; gap: 5px; font-size: .78rem; line-height: 1.6; color: var(--muted); }
.intro-bottom button { flex-shrink: 0; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
@media (max-width: 980px) {
  .intro-science { grid-template-columns: 1fr; gap: 20px; }
  .intro-panel .demo-mechanics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .intro-bottom { align-items: flex-start; flex-direction: column; }
  .intro-heading { flex-direction: column; gap: 12px; }
}
@media (max-width: 520px) {
  .intro-backdrop { padding: 10px; }
  .intro-panel { max-height: calc(100dvh - 20px); border-radius: 22px; padding: 22px; }
  .intro-panel .demo-mechanics, .demo-mechanics, .mode-switcher { grid-template-columns: 1fr; }
  .intro-bottom button { width: 100%; }
  .intro-shapes { gap: 8px; }
  .intro-shapes article { padding: 12px; }
}
.intro-heading-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.intro-heading-actions .intro-badge { margin: 0; }
@media (min-width: 981px) {
  .intro-panel { padding: 32px 38px; }
  .intro-heading h2 { font-size: clamp(2.7rem, 4.8vw, 4rem); }
  .intro-science { padding: 20px 0; }
}
.topbar-actions { flex-wrap: wrap; max-width: 100%; }
.button-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; text-decoration: none; }

/* Optional accounts and progress saves. */
.endless-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; padding: 18px 0; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.endless-toolbar > div:first-child { display: grid; gap: 8px; }
.endless-toolbar > div > span { color: var(--muted); font-size: .84rem; }
.endless-toolbar .button-row { gap: 8px; }
.endless-toolbar button { padding: 11px 14px; }
.endless-saved { padding: 22px; border: 1px solid var(--line-strong); border-radius: 18px; background: #7ce5d80a; margin: 20px 0; }
.endless-saved p { color: var(--muted); line-height: 1.7; }
.endless-save-note { margin: 20px 0 0; color: var(--muted); font-size: .85rem; line-height: 1.7; }
.endless-next { justify-self: start; }
.endless-text-button { padding: 4px 0; background: none; border: 0; color: var(--accent); text-decoration: underline; font: inherit; }
.endless-leaderboard-table { font-size: .86rem; }
.endless-leaderboard-table th { font-size: .65rem; letter-spacing: .06em; }
.endless-leaderboard-table th, .endless-leaderboard-table td { padding: 12px 8px; }
.endless-leaderboard-table small { display: block; color: var(--muted); font-size: .7rem; line-height: 1.5; margin-top: 5px; }
@media (max-width: 600px) {
  .endless-game-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: 12px; margin-bottom: 0; }
  .endless-game-header .hero-title { font-size: 1.4rem; margin-bottom: 8px; }
  .endless-game-header .wallet-card { min-width: 64px; padding: 10px; }
  .endless-toolbar { align-items: flex-start; gap: 14px; }
  .endless-toolbar .button-row { width: 100%; }
  .endless-toolbar button { flex: 1 1 110px; font-size: .8rem; min-height: 44px; }
}
.account-button { display: grid; gap: 3px; text-align: left; }
.account-button > span { font-weight: 500; }
.account-button small { color: var(--muted); font-size: .66rem; line-height: 1.4; }
.account-open { overflow: hidden; }
.account-backdrop { position: fixed; inset: 0; z-index: 120; display: grid; place-items: center; padding: 20px; background: #010c15cc; backdrop-filter: blur(10px); }
.account-dialog { width: min(500px, 100%); max-height: calc(100dvh - 40px); overflow-y: auto; padding: 28px; border: 1px solid var(--line-strong); border-radius: 24px; background: linear-gradient(145deg, #102e3d, #061923); box-shadow: var(--shadow); }
.account-dialog:focus { outline: none; }
.account-dialog .table-caption { align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.account-dialog .card-title { font-size: 1.75rem; overflow-wrap: anywhere; }
.account-dialog .subtle-copy { font-size: .88rem; }
.account-dialog .table-caption > button { padding: 10px 14px; white-space: nowrap; }
.account-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin: 24px 0; border: 1px solid var(--line); border-radius: 16px; }
.account-tabs button { border: 0; border-radius: 12px; min-height: 44px; background: transparent; color: var(--muted); }
.account-tabs .is-active { color: var(--text); background: #7ce5d81c; }
.account-dialog .name-form { gap: 10px; }
.account-dialog .name-form > label { margin-top: 6px; }
.account-dialog .name-form > button { margin-top: 14px; }
.account-guest { width: 100%; margin-top: 12px; }
.account-error { margin: 20px 0; padding: 14px; border: 1px solid #ff8e7355; border-radius: 12px; color: #ffbea9; font-size: .88rem; line-height: 1.6; overflow-wrap: anywhere; }
.account-summary { display: grid; gap: 10px; margin: 24px 0; padding: 18px; background: #7ce5d80a; border: 1px solid var(--line); border-radius: 16px; font-size: .9rem; }
.account-summary span:last-child { color: var(--accent); }
.account-recent { margin-top: 24px; }
.account-recent h3 { font-size: 1rem; }
.account-recent p { display: grid; gap: 6px; padding: 14px 0; border-top: 1px solid var(--line); }
.account-recent p span { color: var(--muted); font-size: .85rem; }
@media (max-width: 520px) {
  .account-backdrop { padding: 12px; }
  .account-dialog { padding: 22px; max-height: calc(100dvh - 24px); }
  .account-dialog .table-caption { flex-direction: row; }
}

/* Personal biography and creator credit. */
.about-brand { color: var(--text); text-decoration: none; }
.about-brand .brand-title { display: block; font-size: clamp(1.6rem, 3vw, 2.5rem); }
.about-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 24px; }
.about-bio .panel-inner { padding: clamp(24px, 4vw, 48px); }
.about-name { margin: 24px 0; font-size: clamp(3rem, 6.8vw, 5.8rem); line-height: .98; }
.about-name > span { color: var(--gold); }
.about-introduction { margin: 0 0 22px; color: var(--accent); font-size: 1.15rem; line-height: 1.5; }
.about-copy { margin: 0 0 20px; color: var(--muted); font-size: 1rem; line-height: 1.8; }
.about-copy strong { color: var(--text); font-weight: 500; }
.about-copy a { color: var(--accent); text-underline-offset: 4px; }
.about-copy:last-child { margin-bottom: 0; }
.about-facts { display: grid; grid-template-columns: 1.25fr .7fr 1fr; gap: 16px; margin: 30px 0 0; padding-top: 24px; border-top: 1px solid var(--line); }
.about-facts dt { margin-bottom: 8px; color: var(--muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.about-facts dd { margin: 0; font-size: .95rem; line-height: 1.5; }
.about-contact { align-self: start; }
.about-contact .panel-inner { padding: clamp(24px, 3vw, 36px); }
.about-monogram { display: grid; place-items: center; width: 82px; height: 82px; margin-bottom: 36px; border: 1px solid var(--line-strong); border-radius: 24px; background: linear-gradient(135deg, #7ce5d81a, #f3c96b0d); color: var(--accent); font-family: "Syne", sans-serif; font-size: 2rem; font-weight: 700; }
.about-contact .card-title { margin-bottom: 18px; font-size: 2rem; }
.about-email { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; padding: 20px 0; border-top: 1px solid var(--line); color: var(--text); text-decoration: none; }
.about-email > span:first-child { grid-column: 1 / -1; color: var(--muted); font-size: .82rem; }
.about-email strong { font-weight: 500; overflow-wrap: anywhere; }
.about-email > span:last-child { color: var(--accent); }
.about-email:hover strong { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.about-credit { grid-column: 1 / -1; }
.about-credit .panel-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 36px; padding: clamp(24px, 3vw, 36px); }
.about-credit .card-title { max-width: 15ch; font-size: clamp(1.65rem, 3vw, 2.2rem); line-height: 1.15; }
@media (max-width: 800px) {
  .about-layout, .about-credit .panel-inner { grid-template-columns: 1fr; }
  .about-credit .panel-inner { gap: 24px; }
  .about-name { font-size: clamp(2.6rem, 10vw, 4.5rem); }
  .about-monogram { margin-bottom: 24px; }
  .about-page .topbar { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 400px) {
  .about-facts { grid-template-columns: 1fr; gap: 18px; }
}

/* Trophies and focused play on small screens. */
.video-shell { position: relative; }
.achievements-open { overflow: hidden; }
.trophy-backdrop { z-index: 110; padding: 24px; }
.achievement-dialog { width: min(900px, 100%); max-height: calc(100dvh - 48px); overflow: auto; border: 1px solid #af92544d; border-radius: 24px; padding: 28px; background: radial-gradient(ellipse at top right, #80602920, transparent 60%), #071b28; box-shadow: var(--shadow); }
.achievement-dialog:focus { outline: none; }
.achievement-dialog .table-caption { flex-wrap: wrap; gap: 12px; }
.achievement-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 20px; }
.achievement-card { display: flex; gap: 14px; align-items: flex-start; border-radius: 16px; border: 1px solid var(--line); padding: 16px; background: #ffffff04; }
.trophy-icon { font-size: 1.9rem; }
.is-locked .trophy-icon { filter: grayscale(1); opacity: .4; }
.achievement-card p { font-size: .82rem; line-height: 1.5; color: var(--muted); margin: 6px 0; }
.achievement-card div > span { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.achievement-card.is-unlocked { border-color: #e3bd6266; background: #e3bd620a; }
.achievement-card.is-unlocked strong, .achievement-card.is-unlocked div > span { color: #ffdc8c; }
.trophy-board-title { margin-top: 26px; }
.achievement-toast { position: fixed; bottom: max(16px, env(safe-area-inset-bottom)); right: 20px; z-index: 90; width: min(450px, calc(100vw - 32px)); padding: 18px; display: flex; align-items: center; gap: 14px; border: 1px solid #efc46f; border-radius: 20px; background: linear-gradient(125deg, #383018, #0d2c35); box-shadow: 0 12px 50px #0008; animation: trophy-arrival .35s ease-out; }
.gold-trophy { font-size: 3rem; filter: drop-shadow(0 0 14px #e3af4277); }
.achievement-toast .eyebrow { color: #ffdc8c; margin: 0 0 5px; }
.achievement-toast strong { font-size: .95rem; line-height: 1.5; }
.trophy-toast-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.trophy-toast-actions button { background: transparent; border: 0; padding: 8px 0; min-height: 36px; color: #d5eced; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; font: inherit; font-size: .8rem; }
@keyframes trophy-arrival { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.run-insights { margin: 20px 0; padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: #79dbc606; }
.run-insights h4 { margin: 20px 0 12px; }
.insight-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.insight-grid > div { padding: 14px; background: #ffffff04; border-radius: 12px; border: 1px solid var(--line); }
.insight-grid span { font-size: .8rem; color: var(--muted); }
.insight-grid strong { display: block; font-size: 1.4rem; margin-top: 5px; }
.insight-grid p { font-size: .8rem; color: var(--muted); margin: 5px 0 0; }
.coin-breakdown { display: flex; flex-wrap: wrap; gap: 8px 14px; padding: 16px 0; font-size: .84rem; line-height: 1.7; }
.coin-breakdown strong { flex-basis: 100%; }
.coin-breakdown b, .run-trophy-summary { color: #ffdc8c; }
.missed-review { margin-top: 20px; }
.missed-review summary { cursor: pointer; min-height: 44px; padding: 12px 0; color: var(--accent); }
@media (max-width: 600px) {
  .is-playing .page-shell { padding: 12px; }
  .is-playing .topbar { margin-bottom: 12px; gap: 8px; }
  .is-playing .topbar .eyebrow { display: none; }
  .is-playing .brand-title { font-size: 1.2rem; }
  .is-playing .topbar-actions { gap: 6px; }
  .is-playing .topbar-actions button, .is-playing .topbar-actions .button-link { font-size: .74rem; padding: 8px; min-height: 44px; }
  .is-playing [data-action="open-intro"], .is-playing #analysis-button { display: none; }
  .game-panel-inner { padding: 14px; }
  .game-header { gap: 12px; }
  .game-heading-block .hero-title { font-size: 1.35rem; margin: 5px 0; }
  .game-copy { font-size: .75rem; line-height: 1.5; }
  .game-panel .status-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .quick-quiz-question-panel .status-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
  .game-panel .stat-card, .game-panel .wallet-card { padding: 10px; min-width: 0; }
  .game-panel .stat-card span, .game-panel .wallet-card > span { font-size: .68rem; }
  .game-panel .stat-card strong, .game-panel .wallet-card strong { font-size: 1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .game-panel .coin-icon { width: 22px; height: 22px; }
  .play-stage { gap: 12px; }
  .section-pill-compact { padding: 8px 10px; font-size: .75rem; }
  .section-pill-compact span { font-size: .68rem; }
  .decision-card { padding: 12px; display: flex; flex-direction: column; gap: 10px; }
  .decision-card .round-note { display: none; }
  .decision-card .choice-grid { order: 1; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .decision-card .wager-toggle { order: 2; padding: 10px; margin: 0; }
  .decision-card .button-row { order: 3; margin: 0; }
  .choice-button { padding: 12px; min-height: 94px; border-radius: 14px; gap: 8px; }
  .choice-button .choice-description, .choice-button .choice-line-meta { display: none; }
  .choice-topline { flex-wrap: wrap; gap: 6px; }
  .choice-topline strong { font-size: 1.06rem; }
  .choice-percent { font-size: .9rem; }
  .crowd-bonus-tag { font-size: .65rem; padding: 4px 7px; }
  .wager-copy strong { font-size: .86rem; }
  .wager-copy span { font-size: .74rem; line-height: 1.4; }
  .help-inline-button { font-size: .75rem; min-height: 44px; padding: 8px; }
  .decision-meta-grid { display: none; }
  .trophy-backdrop { padding: 10px; }
  .achievement-dialog { max-height: calc(100dvh - 20px); padding: 18px; border-radius: 20px; }
  .achievement-grid { grid-template-columns: 1fr; }
  .achievement-toast { right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); width: calc(100vw - 24px); padding: 12px; }
  .gold-trophy { font-size: 2.3rem; }
  .run-insights { padding: 14px; }
  .insight-grid { gap: 8px; }
  .insight-grid > div { padding: 10px; }
  .insight-grid strong { font-size: 1.1rem; }
}
@media (prefers-reduced-motion: reduce) { .achievement-toast { animation: none; } }
@media (max-width: 600px) {
  .mode-switcher { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-bottom: 18px; }
  .mode-toggle { padding: 12px; border-radius: 14px; }
  .mode-toggle strong { font-size: .9rem; }
  .mode-toggle span { font-size: .74rem; }
  .game-panel.quick-quiz-panel .status-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .game-panel .choice-button { min-height: 100px; }
  .game-panel .choice-topline { justify-content: space-between; }
  .game-panel .choice-percent { background: none; padding: 0; }
}
@media (max-width: 600px) {
  .is-playing .feedback-layout { padding: 16px; gap: 16px; }
  .is-playing .feedback-layout .hero-title { font-size: 1.6rem; }
  .is-playing .feedback-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .is-playing .feedback-card { padding: 12px; }
  .is-playing .feedback-card p { font-size: .76rem; line-height: 1.5; }
  .is-playing .line-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .is-playing .line-card { padding: 12px; }
}
@media (max-width: 600px) {
  .is-playing .feedback-card:nth-child(-n+2) p { display: none; }
  .is-playing .feedback-card:last-child { grid-column: 1 / -1; }
  .is-playing .line-card-header { flex-wrap: wrap; gap: 6px; }
  .is-playing .line-card-header strong { font-size: .78rem; }
  .is-playing .line-card p { font-size: .7rem; }
}
.mobile-vote-context { display: none; }
@media (max-width: 600px) {
  .mobile-vote-context { display: block; order: 0; margin: 0; font-size: .7rem; color: var(--muted); line-height: 1.4; }
}

/* Keep coin totals at the wallet's value size and celebrate saved Endless rewards. */
.wallet-card .wallet-display { display: inline-flex; color: inherit; font-size: inherit; letter-spacing: normal; text-transform: none; }
.coin-movement-pop { display: inline-flex; align-items: center; gap: 8px; animation: coin-movement-pop 550ms ease-out both; }
@keyframes coin-movement-pop { from { opacity: .4; transform: translateY(10px) scale(.9); } to { opacity: 1; transform: translateY(0) scale(1); } }
@media (prefers-reduced-motion: reduce) { .coin-movement-pop { animation: none; } }

.about-bio-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(120px, 180px); align-items: center; gap: 24px; margin-bottom: 24px; }
.about-bio-heading .about-name { margin: 18px 0 0; font-size: clamp(2.35rem, 4vw, 4rem); }
.about-portrait { display: block; width: 100%; height: auto; border-radius: 20px; border: 1px solid var(--line-strong); }
@media (max-width: 540px) {
  .about-bio-heading { grid-template-columns: 1fr; gap: 24px; }
  .about-bio-heading .about-name { font-size: clamp(2.6rem, 10vw, 4.5rem); }
  .about-portrait { max-width: 240px; }
}

/* Phone layouts keep the content first, with navigation available on demand. */
.navigation-toggle { display: none; }
@media (max-width: 600px) {
  html { -webkit-text-size-adjust: 100%; }
  .page-shell, .is-playing .page-shell { width: 100%; padding: max(14px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(28px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left)); }
  .topbar { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; align-items: center; margin-bottom: 18px; }
  .topbar > div:first-child { min-width: 0; }
  .topbar .brand-title, .is-playing .brand-title { font-size: clamp(1.1rem, 5vw, 1.45rem); line-height: 1.12; }
  .topbar .eyebrow { font-size: .6rem; letter-spacing: .12em; }
  .navigation-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 12px; font-size: .85rem; }
  #site-navigation { display: none; grid-column: 1 / -1; width: 100%; gap: 8px; padding: 12px; border: 1px solid var(--line); border-radius: 18px; background: var(--bg-panel-strong); }
  #site-navigation.is-open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  #site-navigation #account-controls { grid-column: 1 / -1; }
  #site-navigation button, #site-navigation .button-link { display: flex; justify-content: center; align-items: center; width: 100%; min-height: 46px; padding: 10px 8px; font-size: .85rem; line-height: 1.35; }
  #site-navigation .account-button { display: grid; text-align: center; }
  .welcome-layout > *, .results-layout > *, .about-layout > *, .panel-inner, .modal-inner { min-width: 0; }
  .panel, .modal-panel { border-radius: 22px; }
  .panel-inner { padding: 18px; }
  .hero-card .hero-title { font-size: clamp(1.6rem, 7.5vw, 2rem); line-height: 1.1; }
  .hero-copy, .about-copy { font-size: 1rem; line-height: 1.65; }
  .text-input, input[type="password"], input[type="text"], select, textarea { font-size: 16px; min-height: 48px; }
  .button-row > button, .button-row > .button-link { min-height: 46px; }
  .name-form .button-row { display: grid; grid-template-columns: 1fr; }
  .demo-facts { gap: 6px; margin: 18px 0; }
  .demo-facts span { font-size: .72rem; padding: 7px 9px; }
  .mode-toggle { min-width: 0; padding: 12px 10px; }
  .mode-toggle strong { font-size: .88rem; }
  .mode-toggle span { font-size: .72rem; line-height: 1.4; }
  .status-strip-compact { width: 100%; }
  .choice-button, .wager-toggle, .help-inline-button { touch-action: manipulation; }
  .leaderboard-scroll, .table-shell { max-width: 100%; overscroll-behavior-x: contain; }
  .modal-panel { max-height: calc(100dvh - 24px); }
  .modal-inner { padding: 18px; overscroll-behavior-y: contain; }
  .modal-title { font-size: 1.5rem; overflow-wrap: anywhere; }
  .account-backdrop, .trophy-backdrop { padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom)); }
  .site-credits { font-size: .75rem; line-height: 1.7; margin-top: 22px; }
  .about-page .topbar { display: flex; gap: 16px; }
  .about-page .topbar-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: 8px; }
  .about-page .topbar-actions a { min-height: 46px; padding: 10px 8px; font-size: .84rem; }
  .about-layout { gap: 16px; }
  .about-bio .panel-inner, .about-contact .panel-inner, .about-credit .panel-inner { padding: 20px; }
  .about-bio-heading { grid-template-columns: minmax(0, 1fr) 108px; gap: 14px; margin-bottom: 22px; }
  .about-bio-heading .eyebrow { font-size: .65rem; letter-spacing: .1em; line-height: 1.6; }
  .about-bio-heading .about-name { font-size: clamp(1.6rem, 7.1vw, 2.15rem); line-height: 1.05; margin-top: 10px; }
  .about-portrait { max-width: 108px; border-radius: 14px; }
  .about-introduction { font-size: 1.05rem; line-height: 1.5; margin-bottom: 18px; }
  .about-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; margin-top: 22px; padding-top: 20px; }
  .about-facts > div:last-child { grid-column: 1 / -1; }
  .about-facts dd { font-size: .9rem; overflow-wrap: anywhere; }
  .about-monogram { display: none; }
  .about-contact .card-title { font-size: 1.6rem; }
  .about-email { min-height: 64px; padding: 16px 0; }
  .about-credit .panel-inner { gap: 18px; }
}
@media (max-width: 350px) {
  .about-bio-heading { grid-template-columns: minmax(0, 1fr) 88px; gap: 10px; }
  .about-bio-heading .about-name { font-size: 1.4rem; }
  .about-portrait { max-width: 88px; }
  .mode-toggle strong { font-size: .79rem; }
}
@media (min-width: 601px) and (max-width: 980px) {
  body:not(.about-page) .topbar { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 14px; }
  .navigation-toggle { display: inline-flex; gap: 8px; align-items: center; min-height: 46px; }
  #site-navigation { display: none; grid-column: 1 / -1; width: 100%; }
  #site-navigation.is-open { display: flex; }
}
@media (max-width: 600px) {
  .choice-topline strong { font-size: .98rem; }
  .choice-percent { font-size: .84rem; }
  .endless-toolbar { gap: 10px; padding: 12px 0; margin-bottom: 14px; }
  .endless-toolbar > div:first-child { gap: 5px; }
  .endless-toolbar strong { font-size: .85rem; line-height: 1.5; }
  .endless-toolbar > div > span { font-size: .74rem; line-height: 1.5; }
  .endless-toolbar .button-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); width: 100%; }
  .endless-toolbar button { min-height: 46px; padding: 8px 6px; font-size: .74rem; line-height: 1.4; }
  .endless-toolbar > p { font-size: .73rem; line-height: 1.5; margin: 0; }
}
@media (max-width: 350px) {
  .choice-topline { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  #site-navigation #analysis-button { display: flex; }
}