.speed-panel {
  display: grid;
  gap: 1.25rem;
}

.speed-setup {
  display: grid;
  gap: 1rem;
  max-width: 40rem;
}

.speed-fields {
  display: grid;
  gap: 0.85rem;
}

.speed-fields label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.speed-fields label.study-check {
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.65rem;
  font-weight: 600;
  cursor: pointer;
}

.speed-fields label.study-check input[type="checkbox"] {
  appearance: auto;
  -webkit-appearance: checkbox;
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0.2rem;
  background: transparent;
  accent-color: var(--jade-deep);
  cursor: pointer;
}

.speed-fields select,
.speed-fields input:not([type="checkbox"]) {
  appearance: none;
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.speed-fields input:disabled {
  background: rgba(90, 107, 99, 0.08);
  color: var(--ink-soft);
  cursor: not-allowed;
}

.speed-fields select,
.voice-select {
  padding-right: 2.4rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235a6b63' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  background-size: 1rem;
  cursor: pointer;
}

.speed-estimate {
  margin: 0;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  background: rgba(31, 111, 91, 0.08);
  color: var(--jade-deep);
  font-size: 0.95rem;
  line-height: 1.45;
}

.speed-estimate.is-warn {
  background: rgba(178, 120, 47, 0.12);
  color: #8a5a16;
  border: 1px solid rgba(178, 120, 47, 0.28);
}

.speed-history {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.speed-history h2 {
  margin: 0;
  font-size: 1.1rem;
}

#historyList {
  display: grid;
  gap: 0.75rem;
}

.history-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.55rem;
  align-items: start;
  padding: 0.7rem 0.75rem 0.7rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: #fff;
  box-shadow: 0 1px 2px rgba(26, 36, 33, 0.04);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.history-item:hover {
  border-color: rgba(31, 111, 91, 0.35);
  box-shadow: 0 2px 8px rgba(26, 36, 33, 0.06);
}

.history-main {
  appearance: none;
  display: grid;
  gap: 0.65rem;
  padding: 0.35rem 0.4rem 0.35rem 0.7rem;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  border-radius: 0.6rem;
  min-width: 0;
}

.history-main:hover {
  background: rgba(31, 111, 91, 0.04);
}

.history-item .trash-btn {
  margin-top: 0.2rem;
}

.history-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 0.85rem;
}

.history-date {
  font-size: 0.98rem;
  font-weight: 700;
}

.history-meta {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.history-scores {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.history-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(31, 111, 91, 0.1);
  color: var(--jade-deep);
  font-size: 0.9rem;
}

.history-pill em {
  font-style: normal;
  font-weight: 600;
  opacity: 0.75;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.history-pill strong {
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
}

.history-speed {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.history-speed strong {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.history-empty {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.speed-stage {
  display: none;
  grid-template-rows: auto 1fr auto;
  gap: 1rem;
  min-height: min(70vh, 36rem);
}

.speed-stage.is-active {
  display: grid;
}

.speed-progress {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 600;
}

.speed-card {
  display: grid;
  place-content: center;
  gap: 0.75rem;
  padding: 2rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.72);
  text-align: center;
  min-height: 18rem;
}

.speed-hanzi {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  font-size: clamp(3.5rem, 12vw, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.speed-pinyin {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--jade);
}

.speed-ru {
  margin: 0;
  font-size: 1.3rem;
  color: var(--ink-soft);
}

.speed-timer {
  height: 0.35rem;
  border-radius: 999px;
  background: rgba(26, 36, 33, 0.08);
  overflow: hidden;
}

.speed-timer > span {
  display: block;
  height: 100%;
  width: 100%;
  transform-origin: left center;
  background: var(--jade);
  transform: scaleX(1);
}

.speed-timer.is-running > span {
  animation: speed-timer-shrink linear forwards;
}

@keyframes speed-timer-shrink {
  from {
    transform: scaleX(1);
  }
  to {
    transform: scaleX(0);
  }
}

.quiz-prompt {
  margin: 0;
  font-size: 1rem;
  color: var(--ink-soft);
  text-align: center;
}

.quiz-options {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .quiz-options {
    grid-template-columns: 1fr 1fr;
  }
}

.quiz-option {
  appearance: none;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 1.05rem;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--jade);
}

.quiz-option.is-correct {
  border-color: var(--jade);
  background: rgba(31, 111, 91, 0.12);
}

.quiz-option.is-wrong {
  border-color: var(--seal);
  background: rgba(178, 58, 47, 0.1);
}

.speed-break,
.speed-results {
  display: none;
  gap: 1.25rem;
  max-width: 56rem;
}

.speed-break.is-active,
.speed-results.is-active {
  display: grid;
}

.result-summary {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .result-summary {
    grid-template-columns: repeat(3, 1fr);
  }
}

.quiz-listen {
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.quiz-listen.hidden {
  display: none !important;
}

.quiz-listen .speak-btn {
  min-width: 12rem;
}

.result-score-card {
  display: grid;
  gap: 0.25rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: #fff;
  box-shadow: 0 1px 2px rgba(26, 36, 33, 0.04);
}

.result-score-label {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.result-score-value {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.result-score-sub {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.result-score-meta {
  margin: 0.55rem 0 0;
  padding-top: 0.65rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.result-score-meta strong {
  color: var(--jade-deep);
  font-variant-numeric: tabular-nums;
}

.result-phase {
  display: grid;
  gap: 0.75rem;
}

.result-phase-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.result-phase-head h3 {
  margin: 0;
  font-size: 1.1rem;
}

.result-phase-score {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.result-pct {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: rgba(31, 111, 91, 0.1);
  color: var(--jade-deep);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.result-table-wrap {
  min-width: 0;
}

.result-table {
  min-width: 32rem;
}

.result-table .cell-hanzi {
  font-family: "Noto Sans SC", "DM Sans", sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  white-space: nowrap;
}

.result-table .cell-reps {
  font-variant-numeric: tabular-nums;
  color: var(--ink-soft);
  font-weight: 600;
  white-space: nowrap;
}

.result-table .cell-mark {
  text-align: center;
  width: 3.5rem;
}

.result-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
}

.result-mark.is-ok {
  color: var(--jade-deep);
  background: rgba(31, 111, 91, 0.12);
}

.result-mark.is-bad {
  color: var(--seal);
  background: rgba(178, 58, 47, 0.12);
}

.result-table tbody tr.is-wrong-row {
  background: rgba(178, 58, 47, 0.03);
}

.hidden {
  display: none !important;
}