/* Question context and official-source learning library */
.question-head {
  flex-wrap: wrap;
}

.question-title {
  min-width: 0;
  color: #d5ead9;
  font: 600 12px 'DM Mono', 'Noto Sans KR', monospace;
  letter-spacing: .15px;
}

.quiz-question h3 {
  white-space: pre-line;
}

.quiz-options {
  display: grid;
  gap: 7px;
}

.question-article-excerpt {
  margin: 0 0 11px;
  padding: 11px 13px;
  border: 1px solid rgba(113, 155, 123, .32);
  background: rgba(5, 11, 7, .32);
}

.question-article-excerpt figcaption {
  margin: 0 0 6px;
  color: #8ee9bd;
  font: 600 9px 'DM Mono', monospace;
  letter-spacing: 1px;
}

.question-article-excerpt blockquote {
  margin: 0;
  color: #d0dad2;
  font-family: Georgia, 'Noto Serif KR', serif;
  font-size: 13px;
  font-style: italic;
  line-height: 1.7;
  word-break: keep-all;
}

.question-source {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px 8px;
  margin: -6px 0 17px;
  padding-top: 9px;
  border-top: 1px dashed rgba(112, 145, 121, .34);
  color: #84958a;
  font: 10px/1.55 'DM Mono', 'Noto Sans KR', monospace;
  letter-spacing: .08px;
}

.question-source-label {
  flex: none;
  color: #96dfa8;
  font-weight: 700;
  letter-spacing: .9px;
}

.question-source-copy {
  min-width: 0;
  overflow-wrap: anywhere;
  color: #a5b3a8;
}

.question-source-copy a {
  color: #badfbe;
  text-decoration: none;
  text-underline-offset: 3px;
}

.question-source-copy a:hover {
  color: var(--lime);
  text-decoration: underline;
}

.question-source-meta {
  color: #718177;
}

.question-source-references {
  display: block;
  flex-basis: 100%;
  margin-top: 1px;
  color: #718177;
  overflow-wrap: anywhere;
}

.question-source-references > span {
  margin-right: 7px;
  color: #93a79a;
}

.question-source-references a {
  color: #9fceb0;
  text-decoration: none;
  text-underline-offset: 3px;
}

.question-source-references a:hover {
  color: var(--lime);
  text-decoration: underline;
}

.quiz-reference-library {
  margin: 0 0 20px;
  border: 1px solid #3d5545;
  background: linear-gradient(145deg, rgba(20, 32, 25, .89), rgba(10, 16, 12, .94));
  box-shadow: 0 15px 34px rgba(0, 0, 0, .16);
}

.quiz-reference-library summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 17px 19px;
  cursor: pointer;
  list-style: none;
}

.quiz-reference-library summary::-webkit-details-marker {
  display: none;
}

.quiz-reference-library summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -3px;
}

.quiz-reference-summary-copy {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.quiz-reference-summary-copy .eyebrow {
  margin: 0;
  color: #7ce0a0;
}

.quiz-reference-summary-copy strong {
  color: #eff6ee;
  font-size: 16px;
}

.quiz-reference-summary-copy small {
  color: #9eafa3;
  font-size: 11px;
  line-height: 1.55;
}

.quiz-reference-summary-action {
  flex: none;
  padding: 8px 11px;
  border: 1px solid #486d53;
  background: rgba(34, 65, 43, .45);
  color: #c7f1d1;
  font: 600 10px 'DM Mono', 'Noto Sans KR', monospace;
  letter-spacing: .2px;
}

.quiz-reference-library[open] .when-closed,
.quiz-reference-library:not([open]) .when-open {
  display: none;
}

.quiz-reference-body {
  padding: 0 19px 19px;
  border-top: 1px solid rgba(103, 141, 112, .23);
}

.quiz-reference-intro {
  max-width: 760px;
  margin: 15px 0 12px;
  color: #aebbb1;
  font-size: 12px;
  line-height: 1.7;
  word-break: keep-all;
}

.quiz-reference-status:empty {
  display: none;
}

.quiz-reference-status {
  margin: 0 0 10px;
  color: #95cda2;
  font: 10px/1.5 'DM Mono', 'Noto Sans KR', monospace;
}

.quiz-reference-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.quiz-reference-list li {
  min-width: 0;
}

.quiz-reference-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 7px 9px;
  min-height: 136px;
  height: 100%;
  padding: 13px;
  border: 1px solid rgba(109, 145, 119, .31);
  background: rgba(5, 10, 7, .31);
  color: #dcebdd;
  text-decoration: none;
  transition: border-color .16s, background .16s, transform .16s;
}

.quiz-reference-list a:hover {
  border-color: #75a982;
  background: rgba(45, 92, 57, .22);
  transform: translateY(-2px);
}

.quiz-reference-list a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.quiz-reference-code {
  align-self: start;
  padding: 3px 5px;
  border: 1px solid rgba(145, 226, 169, .36);
  color: #99e6ae;
  font: 700 9px 'DM Mono', monospace;
  letter-spacing: .55px;
}

.quiz-reference-list strong {
  align-self: center;
  min-width: 0;
  color: #ecf3ec;
  font-size: 13px;
  line-height: 1.4;
  word-break: keep-all;
}

.quiz-reference-list a > span:not(.quiz-reference-code) {
  grid-column: 1 / -1;
  color: #a5b3a8;
  font-size: 11px;
  line-height: 1.6;
  word-break: keep-all;
}

.quiz-reference-list em {
  grid-column: 1 / -1;
  align-self: end;
  color: #c9ee91;
  font: 10px 'DM Mono', 'Noto Sans KR', monospace;
  font-style: normal;
}

@media (max-width: 700px) {
  .quiz-reference-library summary {
    align-items: flex-start;
  }

  .quiz-reference-summary-action {
    margin-top: 4px;
  }

  .question-source {
    margin-bottom: 15px;
  }

  .quiz-reference-list {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 480px) {
  .quiz-reference-library summary {
    gap: 12px;
    padding: 15px;
  }

  .quiz-reference-summary-copy small {
    font-size: 10px;
  }

  .quiz-reference-summary-action {
    padding: 7px 8px;
    font-size: 9px;
  }

  .quiz-reference-body {
    padding: 0 15px 15px;
  }

  .quiz-reference-list {
    grid-template-columns: 1fr;
  }

  .quiz-reference-list a {
    min-height: 0;
  }

  .question-article-excerpt blockquote {
    font-size: 12px;
  }

  .question-source {
    font-size: 9px;
  }
}