.learn-section {
  --learn-ink: #edf3f0;
  --learn-mid: #a4b4af;
  --learn-rule: #303b39;
  --learn-mint: #a4e5d5;
  padding-block: clamp(54px, 5.5vw, 88px);
  background: transparent;
  color: var(--learn-ink);
}
.learn-section * {
  box-sizing: border-box;
}
.learn-section [hidden] {
  display: none !important;
}
.learn-section h2.learn-heading {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 43px);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.035em;
}
.learn-section button {
  font-family: inherit;
}
.learn-section button {
  cursor: pointer;
}
.learn-section :is(button, a, summary):focus-visible {
  outline: 2px solid var(--learn-mint);
  outline-offset: 4px;
}
.learn-quiz-intro p,
.learn-feedback p {
  margin: 0;
  color: var(--learn-mid);
  font-size: 15px;
  line-height: 1.9;
}
.learn-quiz-layout {
  display: grid;
  grid-template-columns: minmax(200px, 0.65fr) minmax(0, 1.35fr);
  align-items: start;
  gap: clamp(30px, 6vw, 88px);
}
.learn-quiz-intro p {
  margin-top: 16px;
}
.learn-quiz {
  padding: clamp(16px, 2vw, 26px);
  border-radius: 10px;
  background: rgb(11 17 18 / 64%);
}
.learn-progress {
  display: flex;
  gap: 5px;
  margin-block: 25px 8px;
}
.learn-progress i {
  width: 27px;
  height: 3px;
  background: #3a4744;
}
.learn-progress i.is-current {
  background: #78a79b;
}
.learn-progress i.is-done {
  background: var(--learn-mint);
}
.learn-progress-text {
  font-size: 12px;
  color: var(--learn-mid);
  font-variant-numeric: tabular-nums;
}
.learn-choices {
  padding: 0;
  border: 0;
  min-inline-size: 0;
  margin: 0;
}
.learn-choices legend {
  padding: 0;
  font-size: clamp(18px, 1.65vw, 24px);
  font-weight: 550;
  line-height: 1.65;
  letter-spacing: -0.015em;
}
.learn-choices legend:focus {
  outline: none;
}
#quiz-options {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}
.learn-answer {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 13px 16px;
  min-height: 48px;
  border: 1px solid var(--learn-rule);
  border-radius: 7px;
  background: rgb(17 23 25 / 64%);
  color: var(--learn-ink);
  text-align: left;
  font-size: 15px;
  line-height: 1.55;
}
.learn-letter {
  flex: 0 0 16px;
  color: var(--learn-mid);
  font-family: ui-monospace, monospace;
  font-size: 13px;
}
.learn-answer:hover:not([aria-disabled='true']) {
  border-color: #76988c;
}
.learn-answer[aria-disabled='true'] {
  cursor: default;
}
.learn-answer.is-correct {
  background: rgb(21 38 34 / 83%);
  border-color: #6b9d8e;
}
.learn-answer.is-correct .learn-letter {
  color: var(--learn-mint);
}
.learn-answer.is-wrong {
  background: rgb(39 31 28 / 83%);
  border-color: #977e70;
}
.learn-answer.is-wrong .learn-letter {
  color: #e2b6a2;
}
.learn-answer-state {
  margin-left: auto;
  flex: 0 0 auto;
  font-size: 12px;
  color: #b1cec3;
}
.learn-answer.is-wrong .learn-answer-state {
  color: #dfbba9;
}
.learn-feedback:empty,
.learn-quiz-actions:not(:has(button:not([hidden]))) {
  display: none;
}
.learn-feedback {
  margin-top: 18px;
}
.learn-feedback strong {
  display: block;
  margin-bottom: 4px;
  color: var(--learn-ink);
  font-size: 16px;
  font-weight: 600;
}
.learn-quiz-actions {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
}
.learn-quiz-actions button {
  min-height: 40px;
  padding: 8px 15px;
  border-radius: 6px;
  font-size: 14px;
}
.learn-back {
  background: transparent;
  border: 1px solid var(--learn-rule);
  color: var(--learn-ink);
}
.learn-next {
  background: var(--learn-mint);
  border: 1px solid transparent;
  color: #11231d;
  font-weight: 600;
}
.learn-quiz-actions button:hover {
  filter: brightness(1.1);
}
@media (max-width: 800px) {
  .learn-quiz-layout {
    grid-template-columns: minmax(170px, 0.6fr) minmax(0, 1.4fr);
    gap: 26px;
  }
}
@media (max-width: 660px) {
  .learn-quiz-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .learn-quiz-intro p {
    margin-top: 8px;
  }
  .learn-progress {
    margin-block: 16px 5px;
  }
}

.reflection-list {
  min-width: 0;
  padding-inline: clamp(16px, 2vw, 26px);
  border-radius: 10px;
  background: rgb(11 17 18 / 72%);
}
.reflection-list details + details {
  border-top: 1px solid var(--learn-rule);
}
.reflection-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: 19px;
  color: var(--learn-ink);
  font-size: clamp(16px, 1.35vw, 21px);
  font-weight: 550;
  line-height: 1.65;
  list-style: none;
  cursor: pointer;
}
.reflection-list summary::-webkit-details-marker {
  display: none;
}
.reflection-list summary::after {
  content: '';
  flex: 0 0 9px;
  height: 9px;
  border: solid var(--learn-mint);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}
.reflection-list details[open] summary::after {
  transform: rotate(225deg);
}
.reflection-list summary:hover,
.reflection-list details[open] summary {
  color: var(--learn-mint);
}
.reflection-list p {
  color: #c1d0ca;
  font-size: 15px;
  line-height: 1.9;
  margin: 0;
}
.reflection-list p + p {
  margin-top: 8px;
}
.reflection-list p:last-child {
  padding-bottom: 20px;
}
.reflection-law {
  display: block;
  width: clamp(168px, 18vw, 210px);
  max-width: 100%;
  height: auto;
  margin: 18px auto;
}