.act-root {
  width: 100%;
  color: var(--ink, #302725);
  background: var(--paper, #f7f2ec);
}

.act-root * {
  box-sizing: border-box;
}

.act-header {
  padding: 24px 20px 20px;
  border-top: 1px solid var(--line, #d9cec5);
  border-bottom: 1px solid var(--line, #d9cec5);
  background: var(--plum-soft, #eee4ec);
}

.act-kicker,
.act-subheading,
.act-step {
  margin: 0 0 7px;
  color: var(--plum, #76536f);
  font-size: .76rem;
  font-weight: 900;
  line-height: 1.35;
}

.act-title,
.act-question-small,
.act-scene-title,
.act-finale-title {
  overflow-wrap: anywhere;
  font-family: STSong, "Songti SC", "Noto Serif CJK SC", serif;
  letter-spacing: 0;
}

.act-title {
  margin: 0;
  font-size: 1.65rem;
  line-height: 1.3;
}

.act-intro {
  margin: 10px 0 0;
  color: var(--muted, #746966);
  font-size: .95rem;
  line-height: 1.7;
}

.act-body {
  padding: 20px;
}

.act-instruction,
.act-neutral-note {
  margin: 0 0 15px;
  padding-left: 12px;
  border-left: 4px solid var(--amber, #a97119);
  color: var(--muted, #746966);
  font-size: .88rem;
  line-height: 1.65;
}

.act-item-bank,
.act-options {
  display: grid;
  gap: 9px;
}

.act-item-bank {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 17px;
}

.act-item,
.act-option,
.act-zone,
.act-confirm {
  min-width: 0;
  min-height: 48px;
  border-radius: var(--radius, 6px);
  color: var(--ink, #302725);
  font: inherit;
  letter-spacing: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.act-item:focus-visible,
.act-option:focus-visible,
.act-zone:focus-visible,
.act-confirm:focus-visible {
  outline: 3px solid rgba(201, 95, 77, .38);
  outline-offset: 3px;
}

.act-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px;
  border: 1px solid var(--line, #d9cec5);
  background: var(--paper-2, #fffdf9);
  text-align: left;
}

.act-item-icon {
  display: grid;
  width: 31px;
  height: 31px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--amber-soft, #f7ebc9);
  color: var(--ink, #302725);
  font-size: 1rem;
}

.act-item-copy,
.act-option-text {
  min-width: 0;
}

.act-item-label,
.act-item-state {
  display: block;
  overflow-wrap: anywhere;
}

.act-item-label {
  font-size: .9rem;
  line-height: 1.35;
}

.act-item-state {
  margin-top: 3px;
  color: var(--muted, #746966);
  font-size: .7rem;
  line-height: 1.3;
}

.act-item-selected {
  border-color: var(--coral-strong, #973d32);
  background: var(--coral-soft, #f7dfd8);
  box-shadow: inset 0 0 0 1px var(--coral-strong, #973d32);
}

.act-item-assigned .act-item-state {
  color: var(--leaf, #3f7058);
  font-weight: 800;
}

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

.act-zone {
  display: flex;
  min-height: 128px;
  flex-direction: column;
  align-items: stretch;
  padding: 13px;
  border: 1px dashed var(--plum, #76536f);
  background: rgba(255, 253, 249, .7);
  text-align: left;
}

.act-zone-heading {
  display: block;
  color: var(--plum, #76536f);
  font-size: .96rem;
  font-weight: 900;
  line-height: 1.35;
}

.act-zone-hint {
  display: block;
  margin-top: 3px;
  color: var(--muted, #746966);
  font-size: .72rem;
  line-height: 1.4;
}

.act-zone-ready {
  border-style: solid;
  border-color: var(--coral, #c95f4d);
  background: var(--coral-soft, #f7dfd8);
}

.act-zone-items {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 6px;
  justify-content: flex-end;
  margin-top: 12px;
}

.act-empty {
  color: var(--muted, #746966);
  font-size: .73rem;
  line-height: 1.35;
}

.act-assigned {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 6px;
  padding: 6px 7px;
  border-left: 3px solid var(--line, #d9cec5);
  background: var(--paper-2, #fffdf9);
  font-size: .76rem;
  font-weight: 800;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.act-assigned .act-item-icon {
  width: 23px;
  height: 23px;
  font-size: .78rem;
}

.act-assigned-correct {
  border-left-color: var(--leaf, #3f7058);
}

.act-assigned-wrong {
  border-left-color: var(--coral, #c95f4d);
}

.act-live {
  min-height: 44px;
  margin: 12px 0 0;
  padding: 10px 12px;
  border-left: 4px solid var(--leaf, #3f7058);
  background: var(--leaf-soft, #e0ece4);
  color: #335945;
  font-size: .82rem;
  line-height: 1.5;
}

.act-context,
.act-personal,
.act-records,
.act-products,
.act-clues,
.act-principles,
.act-plans {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line, #d9cec5);
}

.act-context-list,
.act-clue-list,
.act-principle-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.act-context-item {
  padding: 10px 12px;
  border-left: 4px solid var(--amber, #a97119);
  background: var(--amber-soft, #f7ebc9);
  font-size: .86rem;
  line-height: 1.5;
}

.act-plate-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  aspect-ratio: 1;
  overflow: hidden;
  border: 7px solid var(--paper-2, #fffdf9);
  border-radius: 50%;
  outline: 1px solid var(--line, #d9cec5);
  background: var(--line, #d9cec5);
  box-shadow: 0 8px 24px rgba(48, 39, 37, .1);
}

.act-plate-zone {
  min-height: 0;
  border: 1px solid var(--line, #d9cec5);
  border-radius: 0;
  background: var(--paper-2, #fffdf9);
}

.act-plate-zone:first-child {
  grid-column: 1 / -1;
  background: var(--leaf-soft, #e0ece4);
}

.act-plate-zone.act-zone-ready {
  background: var(--coral-soft, #f7dfd8);
}

.act-stack {
  display: grid;
  gap: 14px;
}

.act-question-card,
.act-scene,
.act-product {
  border: 1px solid var(--line, #d9cec5);
  border-radius: var(--radius, 6px);
  background: var(--paper-2, #fffdf9);
}

.act-question-card,
.act-scene {
  padding: 16px;
}

.act-question-small,
.act-scene-title {
  margin: 0 0 12px;
  font-size: 1.08rem;
  line-height: 1.48;
}

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

.act-option {
  display: grid;
  grid-template-columns: 19px minmax(0, 1fr);
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line, #d9cec5);
  background: var(--paper, #f7f2ec);
  text-align: left;
  line-height: 1.45;
}

.act-option-marker {
  width: 17px;
  height: 17px;
  border: 2px solid var(--muted, #746966);
  border-radius: 50%;
  background: transparent;
}

.act-option-selected {
  border-color: var(--plum, #76536f);
  background: var(--plum-soft, #eee4ec);
  font-weight: 800;
}

.act-option-selected .act-option-marker {
  border: 5px solid var(--plum, #76536f);
  background: var(--paper-2, #fffdf9);
}

.act-feedback {
  margin: 11px 0 0;
  padding: 10px 12px;
  border-left: 4px solid var(--plum, #76536f);
  background: var(--plum-soft, #eee4ec);
  font-size: .83rem;
  line-height: 1.55;
}

.act-feedback[hidden],
.act-complete[hidden] {
  display: none;
}

.act-feedback-correct {
  border-left-color: var(--leaf, #3f7058);
  background: var(--leaf-soft, #e0ece4);
  color: #335945;
}

.act-feedback-wrong {
  border-left-color: var(--coral-strong, #973d32);
  background: var(--coral-soft, #f7dfd8);
  color: #713f37;
}

.act-choice-group + .act-choice-group,
.act-record + .act-record,
.act-plan + .act-plan {
  margin-top: 18px;
}

.act-clue-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.act-clue {
  display: flex;
  min-width: 0;
  gap: 9px;
  align-items: flex-start;
  padding: 11px;
  border-left: 4px solid var(--amber, #a97119);
  background: var(--amber-soft, #f7ebc9);
}

.act-clue strong,
.act-clue small {
  display: block;
  overflow-wrap: anywhere;
}

.act-clue strong {
  font-size: .86rem;
  line-height: 1.4;
}

.act-clue small {
  margin-top: 4px;
  color: var(--muted, #746966);
  font-size: .72rem;
  line-height: 1.45;
}

.act-product-grid {
  display: grid;
  gap: 10px;
}

.act-product {
  overflow: hidden;
}

.act-product-head {
  display: grid;
  gap: 5px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line, #d9cec5);
  background: var(--plum-soft, #eee4ec);
}

.act-product-name {
  font-weight: 900;
  line-height: 1.4;
}

.act-product-claim {
  color: var(--plum, #76536f);
  font-size: .78rem;
  line-height: 1.4;
}

.act-product-facts {
  margin: 0;
}

.act-product-facts div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 10px;
  padding: 11px 14px;
}

.act-product-facts div + div {
  border-top: 1px solid var(--line, #d9cec5);
}

.act-product-facts dt,
.act-product-facts dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: .82rem;
  line-height: 1.55;
}

.act-product-facts dt {
  color: var(--muted, #746966);
  font-weight: 800;
}

.act-scene {
  border-left: 6px solid var(--plum, #76536f);
}

.act-scene-body,
.act-scene-prompt {
  margin: 0 0 12px;
  line-height: 1.65;
}

.act-scene-body {
  color: var(--muted, #746966);
  font-size: .9rem;
}

.act-scene-prompt {
  font-weight: 800;
}

.act-confirm {
  width: 100%;
  margin-top: 10px;
  padding: 10px 14px;
  border: 1px solid var(--ink, #302725);
  background: var(--ink, #302725);
  color: #fff;
  font-weight: 900;
}

.act-finale-lead {
  margin: -20px -20px 0;
  padding: 22px 20px;
  background: var(--ink, #302725);
  color: #fff;
}

.act-finale-title {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.4;
}

.act-finale-body {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, .76);
  line-height: 1.65;
}

.act-principle {
  display: grid;
  grid-template-columns: 31px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line, #d9cec5);
  line-height: 1.55;
}

.act-principle-number {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border-radius: 50%;
  background: var(--amber-soft, #f7ebc9);
  color: var(--amber, #a97119);
  font-size: .8rem;
  font-weight: 900;
}

.act-plan {
  padding-left: 13px;
  border-left: 4px solid var(--coral, #c95f4d);
}

.act-plan-scene {
  margin: 0 0 4px;
  color: var(--coral-strong, #973d32);
  font-size: .75rem;
  font-weight: 900;
}

.act-complete {
  margin: 0 20px 22px;
  padding: 13px 15px;
  border: 1px solid var(--leaf, #3f7058);
  border-left-width: 6px;
  border-radius: var(--radius, 6px);
  background: var(--leaf-soft, #e0ece4);
  color: #335945;
  font-size: .88rem;
  font-weight: 900;
  line-height: 1.5;
}

@media (hover: hover) {
  .act-item:hover,
  .act-option:hover,
  .act-zone:hover,
  .act-confirm:hover {
    filter: brightness(.97);
  }
}

@media (max-width: 350px) {
  .act-body,
  .act-header {
    padding-right: 16px;
    padding-left: 16px;
  }

  .act-item-bank,
  .act-zone-grid,
  .act-clue-list {
    grid-template-columns: 1fr;
  }

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

  .act-title {
    font-size: 1.45rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .act-root * {
    scroll-behavior: auto;
    transition: none;
  }
}

/* 分类练习：步骤引导标签（① 选卡片 ② 点分类） */
.act-step-label {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 16px 0 9px;
  font-size: .84rem;
  font-weight: 800;
  color: #5c5148;
}
.act-step-label b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: var(--coral, #c4703f);
  color: #fff;
  font-size: .74rem;
  flex: 0 0 auto;
}
.act-empty { color: #a3948a; }