.quiz-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.seg-mode { margin-bottom: 0; flex: 1 1 auto; }

#btn-quiz-reset {
  flex: 0 0 auto;
  min-height: 40px;
  padding: 0 12px;
  font-size: 14px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(47, 42, 61, .45);
}

.modal-card {
  width: min(420px, 100%);
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 22px 20px 16px;
}

.modal-card h2 { font-size: 20px; }
.modal-card p { margin-top: 8px; color: var(--ink-2); font-size: 15px; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
}

.seg-viz { margin-bottom: 10px; }

/* ---------- 关卡 ---------- */

.level-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 8px;
}

.level-bar.is-nudge { animation: shake .4s ease-in-out; }

.lv {
  flex: 0 0 auto;
  width: auto;
  min-width: 62px;
  max-width: 92px;
  padding: 4px 6px;
  min-height: 70px;
  border: 1.5px solid var(--line-2);
  border-radius: var(--r-md);
  background: var(--card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: transform .12s var(--ease);
}

.lv:active { transform: scale(.94); }

.lv-n {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
}

.lv-star { display: flex; gap: 1px; align-items: center; height: 14px; }

.lv.is-passed {
  background: var(--ok-l);
  border-color: var(--ok);
}

.lv.is-locked {
  background: var(--muted);
  border-style: dashed;
}

.lv.is-locked .lv-n { color: var(--ink-3); }

/* ---------- 答题 ---------- */

.quiz-play {
  margin-top: 4px;
  padding-bottom: env(safe-area-inset-bottom);
}

.qcard {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 16px;
  text-align: center;
}

.qcard.is-right { animation: pop .3s var(--ease); }
.qcard.is-wrong { animation: shake .3s ease-in-out; }

.q-head {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-2);
}

.q-budget {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 13px;
  color: var(--ink-2);
}

.q-lives {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 16px;
  letter-spacing: 2px;
  filter: drop-shadow(0 1px 2px rgba(239, 71, 111, .2));
}

.q-help-left {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-d);
  background: var(--accent-l);
  padding: 2px 8px;
  border-radius: var(--r-sm);
}

.q-budget.is-low { color: var(--bad-text); }

.q-help { margin-top: 10px; }
.q-help:disabled { opacity: .45; cursor: default; }

.q-dots {
  display: flex;
  justify-content: center;
  gap: 5px;
  margin: 10px 0 12px;
  flex-wrap: wrap;
}

.qdot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--muted-dot);
  display: block;
}

.qdot.is-done { background: var(--ok); }
.qdot.is-now { background: var(--brand); transform: scale(1.35); }

.q-ask {
  font-family: var(--font-num);
  font-size: clamp(30px, 9vw, 46px);
  font-weight: 500;
  letter-spacing: 2px;
  line-height: 1.2;
}

.q-tip {
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 2px;
}

.q-input {
  margin: 14px auto 0;
  min-height: 62px;
  max-width: 220px;
  border: 2px dashed var(--line-2);
  border-radius: var(--r-md);
  background: var(--field);
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}

.q-input.is-empty::after {
  content: '?';
  color: var(--ink-3);
}

.q-input.is-ok {
  border-color: var(--ok);
  border-style: solid;
  background: var(--ok-l);
  color: var(--ok-text);
}

.q-input.is-bad {
  border-color: var(--bad);
  border-style: solid;
  background: var(--bad-l);
  color: var(--bad-text);
}

.q-input.is-nudge { animation: shake .35s ease-in-out; }

.q-fb {
  margin-top: 10px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
}

.q-fb.is-ok { color: var(--ok-text); font-weight: 500; }
.q-fb.is-bad { color: var(--bad-text); }

.q-fb .check-path {
  stroke-dasharray: 40;
  stroke-dashoffset: 40;
  animation: check .45s ease-out .05s both;
}

.q-hint {
  margin-top: 8px;
  padding: 10px;
  border-radius: var(--r-md);
  background: var(--brand-l);
}

.hint-cap {
  font-size: 14px;
  color: var(--brand-d);
  font-weight: 500;
}

.q-actions {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 键盘 ---------- */

.keypad {
  margin: 14px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 380px;
  user-select: none;
}

.key {
  min-height: 58px;
  border: 1.5px solid var(--line-2);
  border-radius: var(--r-md);
  background: var(--card);
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  box-shadow: 0 4px 0 var(--line-2);
  transition: transform .08s var(--ease), box-shadow .08s var(--ease), background .12s;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.key:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 var(--line-2);
  background: var(--muted);
}

.key-del {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-2);
  background: #fbf9ff;
}

.key-del:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 var(--line-2);
}

.key-ok {
  background: var(--brand);
  border-color: var(--brand-d);
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 0 var(--brand-d);
}

.key-ok.is-ready {
  background: var(--brand);
  border-color: var(--brand-d);
  box-shadow: 0 4px 0 var(--brand-d), 0 0 0 2px var(--brand-l);
}

.key-ok:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 var(--brand-d);
  background: var(--brand-d);
}

/* ---------- 结果 ---------- */

.quiz-result {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 22px 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.res-title { font-size: 20px; font-weight: 500; }

.res-stars {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 12px 0;
}

.res-stars svg { width: 30px; height: 30px; }

.big-star {
  display: inline-flex;
  animation: pop .4s var(--ease) both;
  animation-delay: calc(var(--i) * 160ms);
}

.res-line { font-size: 15px; color: var(--ink); }
.res-sub { font-size: 13px; color: var(--ink-2); margin-top: 4px; }

.res-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
  flex-wrap: wrap;
}

.confetti {
  position: absolute;
  left: 50%;
  top: 30%;
  width: 0;
  height: 0;
  pointer-events: none;
}

.confetti i {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: confetti 1.1s ease-out both;
}

.confetti i:nth-child(4n+1) { background: var(--brand); }
.confetti i:nth-child(4n+2) { background: var(--accent); }
.confetti i:nth-child(4n+3) { background: var(--ok); }
.confetti i:nth-child(4n+4) { background: var(--warn); }

/* ---------- 错题本 ---------- */

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

.wrong-head span { font-size: 14px; color: var(--ink-2); }

.wrong-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}

.wrong-item {
  min-height: 52px;
  border: 1.5px solid var(--bad);
  border-radius: var(--r-md);
  background: var(--bad-l);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 12px;
}

.wrong-item:active { transform: scale(.97); }

.wi-eq {
  font-family: var(--font-num);
  font-size: 17px;
  font-weight: 500;
}

.wi-count { font-size: 12px; color: var(--bad-text); }

.wrong-detail {
  margin-top: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 14px;
}

/* ---------- 桌面 ---------- */

@media (min-width: 640px) {
  .qcard { max-width: 560px; margin: 0 auto; }
  .keypad { max-width: 420px; }
}

@media (min-width: 1024px) {
  .qcard { max-width: 640px; }
}