:root {
  --red: #b7282e;
  --cream: #f6e8c8;
  --ink: #173b3f;
  --green: #2ca58d;
  --gold: #f3a712;
  --paper: #fffdf7;
  --muted: #647477;
  --line: rgba(23, 59, 63, 0.18);
  --wrong: #c84d4d;
  --wrong-pale: #fff0ec;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Segoe UI", "Noto Sans SC", "Noto Sans CJK SC", "Source Han Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  color: var(--ink);
  background: var(--cream);
  scroll-behavior: smooth;
}

body {
  position: relative;
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  color: var(--ink);
  background-color: var(--cream);
  background-image:
    linear-gradient(rgba(23, 59, 63, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 59, 63, 0.045) 1px, transparent 1px),
    radial-gradient(circle at 14% 18%, rgba(243, 167, 18, 0.2), transparent 24%),
    radial-gradient(circle at 88% 72%, rgba(44, 165, 141, 0.15), transparent 27%);
  background-size: 28px 28px, 28px 28px, auto, auto;
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

button,
a {
  font: inherit;
}

button {
  color: inherit;
}

.erhua {
  display: inline-block;
  margin-left: 0.02em;
  color: currentColor;
  font-size: 0.66em;
  font-weight: inherit;
  line-height: 1;
  vertical-align: baseline;
}

.quiz-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(130px, 1fr) minmax(280px, 720px) minmax(130px, 1fr);
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  min-height: 92px;
  padding: 15px clamp(18px, 4vw, 56px);
  background: rgba(255, 253, 247, 0.92);
  border-bottom: 1px solid rgba(23, 59, 63, 0.14);
  box-shadow: 0 8px 30px rgba(23, 59, 63, 0.08);
  backdrop-filter: blur(14px);
}

.quiz-brand {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 900;
  text-decoration: none;
}

.quiz-brand img {
  display: block;
  width: 29px;
  height: 29px;
}

.progress-area {
  display: grid;
  gap: 8px;
}

.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.progress-meta strong {
  color: var(--ink);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.progress-track {
  height: 18px;
  overflow: hidden;
  background: rgba(23, 59, 63, 0.1);
  border: 2px solid rgba(23, 59, 63, 0.14);
  border-radius: 99px;
  box-shadow: inset 0 2px 4px rgba(23, 59, 63, 0.12);
}

.progress-fill {
  position: relative;
  display: block;
  width: 0;
  height: 100%;
  background: var(--green);
  border-radius: inherit;
  box-shadow: inset 0 -3px 0 rgba(23, 59, 63, 0.18);
  transition: width 360ms cubic-bezier(0.22, 1, 0.36, 1);
}

.progress-fill::after {
  content: "";
  position: absolute;
  inset: 2px 8px auto;
  height: 3px;
  background: rgba(255, 255, 255, 0.52);
  border-radius: 99px;
}

.quiz-exit {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  justify-self: end;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 50%;
  text-decoration: none;
}

.quiz-tools {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 7px;
}

.theme-toggle {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  padding: 0;
  color: var(--ink);
  background: rgba(255, 253, 247, 0.58);
  border: 1px solid rgba(23, 59, 63, 0.18);
  border-radius: 50%;
  cursor: pointer;
}

.theme-icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-theme="light"] .theme-icon-sun,
[data-theme="dark"] .theme-icon-moon {
  display: none;
}

.quiz-exit svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
}

.quiz-brand:hover,
.quiz-exit:hover,
.theme-toggle:hover {
  color: var(--red);
}

.quiz-shell {
  display: grid;
  width: min(920px, calc(100% - 36px));
  min-height: calc(100vh - 92px);
  min-height: calc(100dvh - 92px);
  align-items: start;
  margin: 0 auto;
  padding: clamp(30px, 6vh, 72px) 0 64px;
}

.question-card,
.result-card {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: rgba(255, 253, 247, 0.96);
  border: 1px solid rgba(23, 59, 63, 0.15);
  border-radius: 30px;
  box-shadow:
    0 26px 80px rgba(23, 59, 63, 0.14),
    0 4px 0 rgba(23, 59, 63, 0.08);
}

.question-card {
  scroll-margin-top: 118px;
}

.question-card::before,
.result-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 7px;
  background: linear-gradient(90deg, var(--red) 0 28%, var(--gold) 28% 54%, var(--green) 54% 100%);
}

.question-heading {
  padding: clamp(30px, 5vw, 50px) clamp(24px, 7vw, 74px) 22px;
}

.level-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.score-help {
  position: relative;
  display: grid;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  place-items: center;
  margin-left: auto;
  padding: 0;
  color: var(--green);
  background: var(--paper);
  border: 2px solid rgba(44, 165, 141, 0.55);
  border-radius: 50%;
  box-shadow: 0 3px 0 rgba(31, 120, 104, 0.28);
  cursor: pointer;
  font-size: 19px;
  font-weight: 950;
  line-height: 1;
  transition: transform 140ms ease, color 140ms ease, background-color 140ms ease, box-shadow 140ms ease;
}

.score-help::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -1px;
  width: 8px;
  height: 8px;
  background: var(--gold);
  border: 2px solid var(--paper);
  border-radius: 50%;
}

.score-help:hover {
  color: #fffdf7;
  background: var(--green);
  transform: translateY(-1px);
  box-shadow: 0 4px 0 rgba(31, 120, 104, 0.36);
}

.level-badge,
.question-kind {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 850;
  line-height: 1;
}

.level-badge {
  min-width: 56px;
  padding: 8px 13px;
  color: var(--paper);
  background: var(--ink);
}

.level-badge.level-easy {
  background: var(--green);
}

.level-badge.level-medium {
  color: var(--ink);
  background: var(--gold);
}

.level-badge.level-hard {
  background: var(--red);
}

.level-badge.level-expert {
  background: var(--ink);
  box-shadow: inset 0 -3px 0 var(--green);
}

.question-kind {
  padding: 7px 0;
  color: var(--muted);
}

.question-heading h1 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(27px, 4vw, 42px);
  font-weight: 850;
  line-height: 1.35;
  letter-spacing: -0.015em;
  overflow-wrap: anywhere;
}

.question-hint {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.answer-area {
  padding: 8px clamp(24px, 7vw, 74px) 30px;
}

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

.answer-choice,
.sound-option,
.match-tile {
  -webkit-tap-highlight-color: transparent;
}

.answer-choice {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  min-height: 72px;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid rgba(23, 59, 63, 0.22);
  border-radius: 15px;
  box-shadow: 0 4px 0 rgba(23, 59, 63, 0.2);
  cursor: pointer;
  text-align: left;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background-color 120ms ease;
}

.answer-choice:hover:not(:disabled) {
  border-color: var(--green);
  background: #f4fbf7;
  transform: translateY(-1px);
}

.answer-choice.selected {
  background: #eef8f5;
  border-color: var(--green);
  box-shadow: 0 3px 0 var(--green);
  transform: translateY(1px);
}

.choice-marker {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--muted);
  background: rgba(23, 59, 63, 0.05);
  border: 1px solid rgba(23, 59, 63, 0.16);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 900;
}

.selected .choice-marker {
  color: var(--paper);
  background: var(--green);
  border-color: var(--green);
}

.multi-marker {
  position: relative;
  background: transparent;
  border-width: 2px;
  border-radius: 11px;
  transition: background-color 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.multi-marker::after {
  content: "";
  width: 8px;
  height: 15px;
  margin-top: -3px;
  border: solid currentColor;
  border-width: 0 3px 3px 0;
  opacity: 0;
  transform: rotate(45deg) scale(0.65);
  transition: opacity 120ms ease, transform 160ms cubic-bezier(0.2, 0.9, 0.3, 1.35);
}

.selected .multi-marker {
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.22);
}

.selected .multi-marker::after {
  opacity: 1;
  transform: rotate(45deg) scale(1);
}

.choice-label {
  min-width: 0;
  font-family: var(--font-serif);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 720;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.answer-choice:disabled,
.sound-option:disabled,
.match-tile:disabled {
  cursor: default;
  opacity: 1;
}

.sound-matrix {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.sound-segment {
  display: grid;
  gap: 11px;
  padding: 14px;
  background: rgba(246, 232, 200, 0.35);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.sound-character {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  margin: 0 auto 2px;
  color: var(--paper);
  background: var(--ink);
  border-radius: 16px;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 900;
  box-shadow: 3px 3px 0 var(--gold);
}

.sound-options {
  display: grid;
  gap: 9px;
}

.sound-option {
  min-height: 48px;
  padding: 8px 6px;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid rgba(23, 59, 63, 0.2);
  border-radius: 11px;
  box-shadow: 0 3px 0 rgba(23, 59, 63, 0.18);
  cursor: pointer;
  font-weight: 850;
}

.sound-option:hover:not(:disabled),
.sound-option.selected {
  background: #eef8f5;
  border-color: var(--green);
}

.sound-option.selected {
  box-shadow: 0 2px 0 var(--green);
  transform: translateY(1px);
}

.match-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 58px minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
}

.match-column {
  display: grid;
  align-content: start;
  gap: 11px;
}

.match-column-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
  text-align: center;
}

.match-tile {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  min-height: 62px;
  align-items: center;
  gap: 8px;
  padding: 10px 13px;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid rgba(23, 59, 63, 0.21);
  border-radius: 14px;
  box-shadow: 0 4px 0 rgba(23, 59, 63, 0.18);
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 740;
  text-align: left;
}

.match-tile:hover:not(:disabled),
.match-tile.selected {
  border-color: var(--gold);
  background: #fff9e8;
}

.match-tile.paired {
  border-color: var(--green);
  background: #eef8f5;
  box-shadow: 0 3px 0 var(--green);
  transform: translateY(1px);
}

.match-number {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  color: var(--paper);
  background: transparent;
  border-radius: 50%;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 900;
}

.match-tile.paired .match-number {
  background: var(--green);
}

.match-bridge {
  display: grid;
  grid-template-rows: 20px repeat(4, minmax(0, 1fr));
  place-items: center;
  color: var(--muted);
}

.match-bridge span {
  font-size: 11px;
  font-weight: 850;
}

.match-bridge i {
  width: 28px;
  height: 2px;
  background: rgba(23, 59, 63, 0.16);
  border-radius: 99px;
}

.question-action {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
  padding: 22px clamp(24px, 7vw, 74px) 30px;
  background: rgba(246, 232, 200, 0.24);
  border-top: 1px solid rgba(23, 59, 63, 0.1);
}

.primary-action,
.previous-action,
.share-button,
.result-actions button,
.result-actions a {
  min-height: 54px;
  padding: 12px 28px;
  border-radius: 14px;
  font-weight: 900;
  text-decoration: none;
}

.primary-action {
  min-width: 180px;
  color: var(--paper);
  background: var(--green);
  border: 0;
  box-shadow: 0 5px 0 #1f7868;
  cursor: pointer;
  font-size: 16px;
}

.previous-action {
  min-width: 118px;
  color: var(--ink);
  background: transparent;
  border: 2px solid rgba(23, 59, 63, 0.22);
  box-shadow: 0 4px 0 rgba(23, 59, 63, 0.16);
  cursor: pointer;
  font-size: 15px;
}

.previous-action:hover:not(:disabled) {
  color: var(--green);
  border-color: var(--green);
  transform: translateY(-1px);
}

.previous-action:active:not(:disabled) {
  box-shadow: 0 2px 0 rgba(23, 59, 63, 0.16);
  transform: translateY(2px);
}

.previous-action:disabled {
  cursor: not-allowed;
  opacity: 0.34;
}

.primary-action:hover:not(:disabled) {
  filter: brightness(1.04);
  transform: translateY(-1px);
}

.primary-action:active:not(:disabled) {
  box-shadow: 0 2px 0 #1f7868;
  transform: translateY(3px);
}

.primary-action:disabled {
  color: rgba(23, 59, 63, 0.42);
  background: rgba(23, 59, 63, 0.1);
  box-shadow: 0 4px 0 rgba(23, 59, 63, 0.13);
  cursor: not-allowed;
}

.result-card {
  display: grid;
  justify-items: center;
  align-self: start;
  padding: clamp(42px, 7vw, 72px) clamp(24px, 7vw, 72px) 36px;
  text-align: center;
  outline: none;
}

.result-loading {
  display: grid;
  width: 100%;
  min-height: clamp(390px, calc(100dvh - 210px), 590px);
  place-content: center;
  justify-items: center;
  padding: 18px;
}

.result-loader {
  width: clamp(78px, 13vw, 88px);
  height: clamp(78px, 13vw, 88px);
  margin-bottom: 27px;
  background: conic-gradient(
    from -90deg,
    var(--green) 0 102deg,
    var(--gold) 102deg 126deg,
    var(--line) 126deg 360deg
  );
  border-radius: 50%;
  filter: drop-shadow(0 5px 9px rgba(23, 59, 63, 0.14));
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 10px), #000 calc(100% - 9px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 10px), #000 calc(100% - 9px));
  animation: result-loader-spin 0.86s linear infinite;
}

.result-loading h1 {
  margin: 0;
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 800;
  line-height: 1.3;
}

.result-loading p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

@keyframes result-loader-spin {
  to {
    transform: rotate(1turn);
  }
}

.rating-emblem {
  position: relative;
  display: grid;
  width: 118px;
  height: 118px;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border: 5px solid var(--paper);
  border-radius: 38% 62% 43% 57% / 52% 42% 58% 48%;
  box-shadow: 0 0 0 3px var(--ink), 8px 9px 0 var(--gold);
  transform: rotate(-4deg);
}

.rating-emblem span {
  font-family: var(--font-serif);
  font-size: 54px;
  font-weight: 950;
  transform: rotate(4deg);
}

.rating-emblem i {
  position: absolute;
  right: 18px;
  bottom: 15px;
  left: 18px;
  height: 5px;
  background: var(--green);
  border-radius: 99px;
}

.result-eyebrow {
  margin: 27px 0 7px;
  color: var(--red);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.18em;
}

.result-card > h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(48px, 8vw, 74px);
  font-weight: 950;
  line-height: 1.15;
}

.result-description {
  max-width: 620px;
  margin: 13px 0 23px;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 650;
  line-height: 1.7;
}

.score-display {
  display: flex;
  align-items: baseline;
  gap: 7px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.score-display strong {
  font-size: clamp(56px, 10vw, 86px);
  font-weight: 950;
  line-height: 1;
  letter-spacing: -0.06em;
}

.score-display span {
  color: var(--muted);
  font-size: 18px;
  font-weight: 800;
}

.score-breakdown {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 10px;
  width: min(420px, 100%);
  margin-top: 17px;
}

.score-breakdown > span {
  display: grid;
  gap: 2px;
  padding: 11px 16px;
  background: rgba(246, 232, 200, 0.45);
  border: 1px solid var(--line);
  border-radius: 13px;
}

.score-breakdown small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.score-breakdown strong {
  font-size: 17px;
}

.rating-stats {
  width: 100%;
  margin-top: 32px;
  padding: 24px;
  background:
    radial-gradient(circle at 93% 8%, rgba(243, 167, 18, 0.2), transparent 25%),
    linear-gradient(145deg, rgba(246, 232, 200, 0.5), rgba(44, 165, 141, 0.08));
  border: 1px solid var(--line);
  border-radius: 22px;
  text-align: left;
}

.rating-stats-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 17px;
  border-bottom: 1px solid var(--line);
}

.rating-stats-heading span {
  color: var(--red);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.14em;
}

.rating-stats-heading h2,
.rating-stats-heading p {
  margin: 0;
}

.rating-stats-heading h2 {
  margin-top: 4px;
  font-family: var(--font-serif);
  font-size: clamp(21px, 3vw, 28px);
}

.rating-stats-heading p {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  text-align: right;
}

.rating-stats-list {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.rating-stats-list li {
  display: grid;
  grid-template-columns: minmax(88px, 0.75fr) minmax(130px, 2fr) 54px;
  align-items: center;
  gap: 12px;
  min-height: 25px;
  color: var(--muted);
}

.rating-stats-list li > span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 950;
  letter-spacing: 0.04em;
}

.rating-stats-list li > span small {
  padding: 2px 6px;
  color: var(--paper);
  background: var(--red);
  border-radius: 99px;
  font-family: var(--font-sans);
  font-size: 9px;
  font-weight: 900;
  white-space: nowrap;
}

.rating-stats-list li > i {
  height: 10px;
  overflow: hidden;
  background: rgba(23, 59, 63, 0.1);
  border-radius: 99px;
}

.rating-stats-list li > i b {
  display: block;
  height: 100%;
  min-width: 0;
  background: var(--green);
  border-radius: inherit;
  transition: width 0.55s ease;
}

.rating-stats-list li > strong {
  color: var(--ink);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.rating-stats-list li.current {
  color: var(--ink);
}

.rating-stats-list li.current > i b {
  background: var(--red);
}

.share-callout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  width: 100%;
  align-items: center;
  gap: 22px;
  margin-top: 34px;
  padding: 22px 24px;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    linear-gradient(135deg, transparent 0 47%, rgba(255, 255, 255, 0.06) 47% 50%, transparent 50% 100%);
  background-size: 28px 28px;
  border-radius: 20px;
  text-align: left;
}

.share-kicker {
  display: inline-block;
  margin-bottom: 5px;
  color: var(--gold);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.14em;
}

.share-callout h2,
.share-callout p {
  margin: 0;
}

.share-callout h2 {
  font-family: var(--font-serif);
  font-size: clamp(19px, 3vw, 26px);
}

.share-callout p {
  margin-top: 5px;
  color: rgba(255, 253, 247, 0.7);
  font-size: 13px;
}

.share-button {
  display: inline-flex;
  min-width: 154px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--ink);
  background: var(--gold);
  border: 0;
  box-shadow: 0 4px 0 #b9780a;
  cursor: pointer;
}

.share-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
}

.result-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.result-actions button,
.result-actions a {
  display: inline-grid;
  min-height: 46px;
  place-items: center;
  padding: 9px 18px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  font-size: 13px;
}

.result-actions button:hover,
.result-actions a:hover {
  color: var(--red);
  border-color: var(--red);
}

.result-confetti i {
  position: absolute;
  width: 9px;
  height: 22px;
  border-radius: 99px;
  animation: float 3.2s ease-in-out infinite;
}

.result-confetti i:nth-child(1) { top: 11%; left: 11%; background: var(--red); transform: rotate(22deg); }
.result-confetti i:nth-child(2) { top: 22%; left: 21%; width: 12px; height: 12px; background: var(--green); animation-delay: -1.2s; }
.result-confetti i:nth-child(3) { top: 10%; right: 15%; background: var(--gold); transform: rotate(-30deg); animation-delay: -0.4s; }
.result-confetti i:nth-child(4) { top: 30%; right: 8%; width: 12px; height: 12px; background: var(--red); animation-delay: -2s; }
.result-confetti i:nth-child(5) { top: 44%; left: 7%; background: var(--gold); transform: rotate(70deg); animation-delay: -0.8s; }
.result-confetti i:nth-child(6) { top: 48%; right: 17%; background: var(--green); transform: rotate(-70deg); animation-delay: -1.6s; }

.quiz-toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  max-width: min(360px, calc(100vw - 36px));
  padding: 13px 18px;
  color: var(--paper);
  background: var(--ink);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(23, 59, 63, 0.24);
  font-size: 14px;
  font-weight: 800;
}

body.score-rules-open {
  overflow: hidden;
}

.score-rules-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 18px;
}

.score-rules-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 24, 27, 0.64);
  backdrop-filter: blur(5px);
}

.score-rules-card {
  position: relative;
  z-index: 1;
  width: min(550px, 100%);
  overflow: hidden;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid rgba(23, 59, 63, 0.16);
  border-radius: 28px;
  box-shadow: 0 28px 90px rgba(6, 24, 27, 0.32), 0 5px 0 rgba(23, 59, 63, 0.12);
  outline: 0;
}

.score-rules-head {
  display: flex;
  min-height: 104px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px 18px 24px;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 0%, rgba(243, 167, 18, 0.2), transparent 34%),
    linear-gradient(135deg, rgba(44, 165, 141, 0.16), rgba(255, 253, 247, 0.2));
  border-bottom: 1px solid rgba(23, 59, 63, 0.12);
}

.score-rules-title {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 14px;
}

.score-rules-symbol {
  display: grid;
  width: 50px;
  height: 50px;
  flex: 0 0 50px;
  place-items: center;
  color: #fffdf7;
  background: var(--green);
  border-radius: 16px;
  box-shadow: 4px 4px 0 var(--gold);
  font-size: 27px;
  font-weight: 950;
  transform: rotate(-3deg);
}

.score-rules-title small {
  display: block;
  margin-bottom: 4px;
  color: var(--red);
  font-size: 10px;
  font-weight: 950;
  letter-spacing: 0.12em;
}

.score-rules-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 29px;
  line-height: 1.1;
}

.score-rules-head button {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  padding: 0;
  color: var(--ink);
  background: rgba(255, 253, 247, 0.72);
  border: 1px solid rgba(23, 59, 63, 0.16);
  border-radius: 50%;
  box-shadow: none;
  cursor: pointer;
}

.score-rules-head button:hover {
  color: #fffdf7;
  background: var(--red);
}

.score-rules-head button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
}

.score-rules-body {
  display: grid;
  gap: 14px;
  padding: 22px 24px 25px;
}

.score-rule {
  padding: 18px 19px;
  border: 1px solid var(--line);
  border-radius: 17px;
}

.score-rule-regular {
  background: #edf8f5;
}

.score-rule-expert {
  background: #fff7df;
}

.score-rule-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.score-rule-top strong {
  font-family: var(--font-serif);
  font-size: 19px;
}

.score-rule-top span {
  flex: 0 0 auto;
  padding: 5px 9px;
  color: #fffdf7;
  background: var(--green);
  border-radius: 99px;
  font-size: 11px;
  font-weight: 900;
}

.score-rule-expert .score-rule-top span {
  color: var(--ink);
  background: var(--gold);
}

.score-rule > small {
  display: block;
  margin-top: 3px;
  color: var(--green);
  font-size: 11px;
  font-weight: 850;
}

.score-rules-body p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.7;
}

.score-rules-body .score-rules-update {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 1px 0 0;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  line-height: 1.4;
  text-align: center;
}

.score-rules-update time {
  color: var(--red);
  font-weight: 900;
}

.load-error,
.noscript-card {
  padding: 20px;
  color: #8d2d31;
  background: var(--wrong-pale);
  border: 1px solid rgba(200, 77, 77, 0.28);
  border-radius: 14px;
}

.noscript-card {
  width: min(560px, calc(100% - 36px));
  margin: 40px auto;
}

button:focus-visible,
a:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --cream: #0d2023;
  --ink: #edf2ec;
  --green: #46bea5;
  --gold: #f6b92f;
  --paper: #183438;
  --muted: #a7b9b8;
  --line: rgba(237, 242, 236, 0.17);
  --wrong-pale: #3b2528;
}

html[data-theme="dark"] body {
  background-color: var(--cream);
  background-image:
    linear-gradient(rgba(237, 242, 236, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 242, 236, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 14% 18%, rgba(243, 167, 18, 0.1), transparent 24%),
    radial-gradient(circle at 88% 72%, rgba(44, 165, 141, 0.11), transparent 27%);
}

html[data-theme="dark"] .quiz-topbar {
  background: rgba(13, 32, 35, 0.93);
  border-bottom-color: rgba(237, 242, 236, 0.12);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

html[data-theme="dark"] .theme-toggle {
  background: rgba(237, 242, 236, 0.07);
  border-color: rgba(237, 242, 236, 0.17);
}

html[data-theme="dark"] .progress-track {
  background: rgba(237, 242, 236, 0.1);
  border-color: rgba(237, 242, 236, 0.12);
}

html[data-theme="dark"] .question-card,
html[data-theme="dark"] .result-card {
  background: rgba(21, 47, 51, 0.97);
  border-color: rgba(237, 242, 236, 0.14);
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.34), 0 4px 0 rgba(0, 0, 0, 0.22);
}

html[data-theme="dark"] .result-loader {
  filter: drop-shadow(0 6px 11px rgba(0, 0, 0, 0.28));
}

html[data-theme="dark"] .answer-choice,
html[data-theme="dark"] .sound-option,
html[data-theme="dark"] .match-tile,
html[data-theme="dark"] .previous-action,
html[data-theme="dark"] .result-actions button,
html[data-theme="dark"] .result-actions a {
  background: #1d3b40;
  border-color: rgba(237, 242, 236, 0.2);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.25);
}

html[data-theme="dark"] .answer-choice:hover:not(:disabled),
html[data-theme="dark"] .sound-option:hover:not(:disabled) {
  background: #24484a;
  border-color: rgba(70, 190, 165, 0.72);
}

html[data-theme="dark"] .answer-choice.selected,
html[data-theme="dark"] .sound-option.selected,
html[data-theme="dark"] .match-tile.paired {
  color: #f5fffb;
  background: #0d5a50;
  border-color: #62d8be;
  box-shadow: 0 3px 0 #62d8be, inset 0 0 0 1px rgba(245, 255, 251, 0.1);
}

html[data-theme="dark"] .answer-choice.selected .choice-marker {
  color: #092b2a;
  background: #75e4ca;
  border-color: #75e4ca;
}

html[data-theme="dark"] .match-tile:hover:not(:disabled) {
  background: #463d27;
  border-color: rgba(246, 185, 47, 0.76);
}

html[data-theme="dark"] .match-tile.selected {
  color: #fff8df;
  background: #695018;
  border-color: #ffd261;
  box-shadow: 0 3px 0 #ffd261, inset 0 0 0 1px rgba(255, 248, 223, 0.1);
}

html[data-theme="dark"] .choice-marker,
html[data-theme="dark"] .sound-segment,
html[data-theme="dark"] .score-breakdown > span,
html[data-theme="dark"] .question-action {
  background: rgba(237, 242, 236, 0.055);
  border-color: rgba(237, 242, 236, 0.13);
}

html[data-theme="dark"] .rating-stats {
  background:
    radial-gradient(circle at 93% 8%, rgba(243, 167, 18, 0.1), transparent 25%),
    linear-gradient(145deg, rgba(237, 242, 236, 0.045), rgba(44, 165, 141, 0.055));
  border-color: rgba(237, 242, 236, 0.13);
}

html[data-theme="dark"] .rating-stats-list li > i {
  background: rgba(237, 242, 236, 0.1);
}

html[data-theme="dark"] .level-badge,
html[data-theme="dark"] .sound-character,
html[data-theme="dark"] .rating-emblem,
html[data-theme="dark"] .share-callout,
html[data-theme="dark"] .quiz-toast {
  color: #fffdf7;
  background-color: #091b1e;
}

html[data-theme="dark"] .primary-action,
html[data-theme="dark"] .share-button {
  color: #102a2d;
}

html[data-theme="dark"] .primary-action:disabled {
  color: rgba(237, 242, 236, 0.36);
  background: rgba(237, 242, 236, 0.09);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.2);
}

html[data-theme="dark"] .load-error,
html[data-theme="dark"] .noscript-card {
  color: #ffc4bd;
}

html[data-theme="dark"] .score-rules-card {
  background: #153033;
  border-color: rgba(237, 242, 236, 0.14);
}

html[data-theme="dark"] .score-rules-head {
  background:
    radial-gradient(circle at 90% 0%, rgba(243, 167, 18, 0.13), transparent 34%),
    linear-gradient(135deg, rgba(44, 165, 141, 0.12), rgba(21, 48, 51, 0.25));
  border-bottom-color: rgba(237, 242, 236, 0.12);
}

html[data-theme="dark"] .score-rules-head button {
  background: rgba(237, 242, 236, 0.07);
  border-color: rgba(237, 242, 236, 0.15);
}

html[data-theme="dark"] .score-rule-regular {
  background: rgba(44, 165, 141, 0.09);
}

html[data-theme="dark"] .score-rule-expert {
  background: rgba(243, 167, 18, 0.08);
}

html[data-theme="dark"] .level-badge.level-easy {
  color: #082c28;
  background-color: #62d8be;
  box-shadow: 0 3px 0 #267f70, inset 0 0 0 1px rgba(255, 255, 255, 0.34);
}

html[data-theme="dark"] .level-badge.level-medium {
  color: #302306;
  background-color: #f6c64d;
  box-shadow: 0 3px 0 #9b7415, inset 0 0 0 1px rgba(255, 255, 255, 0.34);
}

html[data-theme="dark"] .level-badge.level-hard {
  color: #fff8f4;
  background-color: #b9414b;
  box-shadow: 0 3px 0 #74252c, inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

html[data-theme="dark"] .level-badge.level-expert {
  color: #fffaff;
  background-color: #6550b9;
  box-shadow: 0 3px 0 #3c2d7e, inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

@keyframes float {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -8px; }
}

@media (max-width: 760px) {
  .quiz-topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 14px;
    min-height: 82px;
    padding: 12px 16px;
  }

  .quiz-brand span,
  .progress-meta span {
    display: none;
  }

  .quiz-shell {
    width: min(100% - 24px, 920px);
    min-height: calc(100dvh - 82px);
    padding: 20px 0 40px;
  }

  .question-card,
  .result-card {
    border-radius: 23px;
  }

  .question-heading {
    padding: 28px 22px 18px;
  }

  .answer-area {
    padding: 7px 22px 24px;
  }

  .choice-list {
    grid-template-columns: 1fr;
    gap: 11px;
  }

  .choice-list.many-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .many-options .answer-choice {
    grid-template-columns: 31px minmax(0, 1fr);
    min-height: 60px;
    gap: 8px;
    padding: 9px 10px;
  }

  .many-options .choice-marker {
    width: 29px;
    height: 29px;
  }

  .many-options .choice-label {
    font-size: 15px;
  }

  .sound-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .match-board {
    grid-template-columns: minmax(0, 1fr) 28px minmax(0, 1fr);
    gap: 7px;
  }

  .match-tile {
    grid-template-columns: 22px minmax(0, 1fr);
    min-height: 58px;
    gap: 5px;
    padding: 8px 9px;
    font-size: 14px;
  }

  .match-number {
    width: 21px;
    height: 21px;
    font-size: 10px;
  }

  .match-bridge i {
    width: 16px;
  }

  .question-action {
    margin-top: 18px;
    padding: 18px 22px 25px;
  }

  .share-callout {
    grid-template-columns: 1fr;
  }

  .share-button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .quiz-topbar {
    min-height: 76px;
    padding-inline: 12px;
  }

  .quiz-brand img {
    width: 25px;
    height: 25px;
  }

  .quiz-exit {
    width: 34px;
    height: 34px;
  }

  .theme-toggle {
    width: 34px;
    height: 34px;
  }

  .progress-track {
    height: 15px;
  }

  .progress-meta strong {
    font-size: 11px;
  }

  .quiz-shell {
    width: calc(100% - 14px);
    padding-top: 9px;
  }

  .question-card,
  .result-card {
    border-radius: 18px;
  }

  .question-heading {
    padding: 25px 16px 16px;
  }

  .level-row {
    margin-bottom: 13px;
  }

  .score-help {
    width: 31px;
    height: 31px;
    flex-basis: 31px;
    font-size: 16px;
  }

  .score-rules-modal {
    padding: 10px;
  }

  .score-rules-card {
    border-radius: 22px;
    box-shadow: 0 18px 60px rgba(6, 24, 27, 0.34), 0 4px 0 rgba(23, 59, 63, 0.1);
  }

  .score-rules-head {
    min-height: 88px;
    padding: 14px 14px 14px 17px;
  }

  .score-rules-title {
    gap: 11px;
  }

  .score-rules-symbol {
    width: 44px;
    height: 44px;
    flex-basis: 44px;
    border-radius: 14px;
    font-size: 23px;
  }

  .score-rules-head h2 {
    font-size: 23px;
  }

  .score-rules-head button {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }

  .score-rules-body {
    gap: 9px;
    padding: 15px;
  }

  .score-rule {
    padding: 13px 14px;
  }

  .question-heading h1 {
    font-size: clamp(23px, 7vw, 30px);
  }

  .question-hint {
    margin-top: 8px;
    font-size: 12px;
  }

  .answer-area {
    padding: 6px 16px 19px;
  }

  .answer-choice {
    grid-template-columns: 32px minmax(0, 1fr);
    min-height: 61px;
    gap: 8px;
    padding: 10px 11px;
    border-radius: 12px;
  }

  .choice-marker {
    width: 30px;
    height: 30px;
  }

  .choice-label {
    font-size: 16px;
  }

  .choice-list.many-options {
    gap: 8px;
  }

  .many-options .answer-choice {
    grid-template-columns: 27px minmax(0, 1fr);
    min-height: 55px;
    padding: 8px;
  }

  .many-options .choice-marker {
    width: 25px;
    height: 25px;
  }

  .sound-matrix {
    gap: 8px;
  }

  .sound-segment {
    gap: 8px;
    padding: 10px;
    border-radius: 14px;
  }

  .sound-character {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-size: 24px;
  }

  .sound-option {
    min-height: 43px;
  }

  .match-column {
    gap: 8px;
  }

  .match-tile {
    grid-template-columns: 19px minmax(0, 1fr);
    min-height: 54px;
    padding: 7px 6px;
    border-radius: 11px;
    font-size: 12.5px;
    line-height: 1.35;
  }

  .match-number {
    width: 18px;
    height: 18px;
    font-size: 9px;
  }

  .question-action {
    padding: 15px 16px 21px;
  }

  .primary-action {
    width: auto;
    flex: 1 1 auto;
  }

  .previous-action {
    min-width: 96px;
    padding-inline: 12px;
  }

  .result-card {
    padding: 38px 16px 24px;
  }

  .rating-emblem {
    width: 98px;
    height: 98px;
  }

  .rating-emblem span {
    font-size: 45px;
  }

  .result-card > h1 {
    font-size: 47px;
  }

  .result-description {
    font-size: 15px;
  }

  .score-breakdown {
    gap: 7px;
  }

  .score-breakdown > span {
    padding: 9px 7px;
  }

  .rating-stats {
    margin-top: 26px;
    padding: 18px 15px;
    border-radius: 16px;
  }

  .rating-stats-heading {
    display: grid;
    gap: 7px;
  }

  .rating-stats-heading p {
    text-align: left;
  }

  .rating-stats-list li {
    grid-template-columns: minmax(82px, 1fr) minmax(78px, 1.4fr) 48px;
    gap: 8px;
  }

  .rating-stats-list li > span {
    flex-wrap: wrap;
    gap: 3px 5px;
    font-size: 17px;
  }

  .share-callout {
    margin-top: 27px;
    padding: 18px;
    border-radius: 16px;
  }

  .result-actions {
    width: 100%;
  }

  .result-actions button,
  .result-actions a {
    flex: 1 1 0;
  }
}

@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;
  }
}