:root {
  --one-ink: #162033;
  --one-muted: #667085;
  --one-line: #d8dee9;
  --one-soft: #f4f7fb;
  --one-brand: #174ea6;
  --one-brand-dark: #103d84;
  --one-correct: #16794a;
  --one-correct-bg: #eaf8f0;
  --one-wrong: #b42318;
  --one-wrong-bg: #fff0ee;
}

.kdl-one-body {
  background: #eef2f7;
  color: var(--one-ink);
}

.kdl-one-page {
  min-height: 70vh;
  padding-bottom: 72px;
}

.kdl-one-hero {
  box-sizing: border-box;
  height: 10px;
  max-height: 10px;
  min-height: 0;
  overflow: hidden;
  padding: 0;
  background: transparent;
  color: #fff;
  font-size: 1px;
  line-height: 1px;
}

.kdl-one-hero-inner {
  max-width: 980px;
  height: 10px;
  max-height: 10px;
  min-height: 0;
  overflow: hidden;
  padding-top: 0;
  padding-bottom: 0;
}

.kdl-one-eyebrow {
  display: block;
  min-height: 0;
  height: auto;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #fff;
  font-size: 1px;
  font-weight: 400;
  line-height: 1px;
  letter-spacing: 0;
}

.kdl-one-hero h1 {
  margin: 0;
  padding: 0;
  color: #fff;
  font-size: 1px;
  line-height: 1px;
  letter-spacing: 0;
}

.kdl-one-hero p {
  max-width: none;
  margin: 0;
  padding: 0;
  color: #fff;
  font-size: 1px;
  line-height: 1px;
  letter-spacing: 0;
}

.kdl-one-shell {
  max-width: 980px;
  margin-top: 16px;
}

.kdl-one-dashboard {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 120px 120px auto;
  gap: 12px;
  align-items: stretch;
  padding: 16px;
  border: 1px solid rgba(216,222,233,.9);
  border-radius: 18px;
  background: rgba(255,255,255,.97);
  box-shadow: 0 14px 35px rgba(16,42,82,.13);
}

.kdl-one-progress-block {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 2px 8px;
}

.kdl-one-progress-copy {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 9px;
  font-size: 14px;
}

.kdl-one-progress-copy span {
  color: var(--one-muted);
  font-weight: 700;
}

.kdl-one-progress-copy strong {
  color: var(--one-ink);
  font-size: 15px;
}

.kdl-one-progress-track {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edf5;
}

.kdl-one-progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #174ea6, #2d70cd);
  transition: width .25s ease;
}

.kdl-one-score-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 62px;
  border: 1px solid #e3e8f0;
  border-radius: 13px;
  background: var(--one-soft);
}

.kdl-one-score-box span {
  color: var(--one-muted);
  font-size: 13px;
  font-weight: 700;
}

.kdl-one-score-box strong {
  margin-top: 2px;
  font-size: 23px;
  line-height: 1;
}

.kdl-one-reset {
  align-self: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid #ccd5e2;
  border-radius: 11px;
  background: #fff;
  color: #344054;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.kdl-one-reset:hover,
.kdl-one-reset:focus-visible {
  border-color: #98a6b8;
  background: #f8fafc;
}

.kdl-one-card {
  overflow: hidden;
  margin-top: 22px;
  border: 1px solid var(--one-line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(16,24,40,.08);
}

.kdl-one-card-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  min-height: 74px;
  padding: 15px 24px;
  border-bottom: 1px solid #e8edf3;
  background: #f8fafc;
}

.kdl-one-source {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.kdl-one-source span,
.kdl-one-source strong {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 3px 10px;
  border-radius: 8px;
  font-size: 14px;
  font-style: normal;
  line-height: 1;
}

.kdl-one-source span {
  background: #e9f1ff;
  color: var(--one-brand);
  font-weight: 900;
}

.kdl-one-source strong {
  background: #172033;
  color: #fff;
}

.kdl-one-source em {
  color: #475467;
  font-size: 14px;
  font-style: normal;
  font-weight: 700;
}

.kdl-one-left {
  flex: 0 0 auto;
  color: var(--one-muted);
  font-size: 14px;
  font-weight: 800;
}

.kdl-one-card-body {
  padding: 34px 34px 30px;
}

.kdl-one-question {
  margin: 0;
  padding: 0;
  background: transparent;
  color: var(--one-ink);
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.55;
  letter-spacing: -.035em;
  white-space: pre-line;
}

.kdl-one-question:focus {
  outline: none;
}

.kdl-one-image {
  margin: 26px auto 8px;
  text-align: center;
}

.kdl-one-image img {
  width: auto;
  max-width: min(100%, 760px);
  max-height: 500px;
  border: 1px solid #dde3ec;
  border-radius: 12px;
  background: #fff;
  object-fit: contain;
}

.kdl-one-options {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.kdl-one-option {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 13px;
  align-items: center;
  width: 100%;
  min-height: 58px;
  padding: 10px 16px 10px 12px;
  border: 1px solid #cfd7e3;
  border-radius: 13px;
  background: #fff;
  color: var(--one-ink);
  text-align: left;
  cursor: pointer;
  transition: border-color .16s ease, background-color .16s ease, box-shadow .16s ease, transform .16s ease;
}

.kdl-one-option:hover:not(:disabled),
.kdl-one-option:focus-visible:not(:disabled) {
  border-color: var(--one-brand);
  box-shadow: 0 0 0 3px rgba(23,78,166,.1);
  transform: translateY(-1px);
  outline: none;
}

.kdl-one-option:disabled {
  cursor: default;
  opacity: 1;
}

.kdl-one-option-number {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #eef2f7;
  color: #344054;
  font-size: 15px;
  font-weight: 900;
}

.kdl-one-option-text {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.02em;
}

.kdl-one-option.is-correct {
  border-color: #6fc495;
  background: var(--one-correct-bg);
  box-shadow: inset 4px 0 0 var(--one-correct);
}

.kdl-one-option.is-correct .kdl-one-option-number {
  background: var(--one-correct);
  color: #fff;
}

.kdl-one-option.is-wrong {
  border-color: #ef9b92;
  background: var(--one-wrong-bg);
  box-shadow: inset 4px 0 0 var(--one-wrong);
}

.kdl-one-option.is-wrong .kdl-one-option-number {
  background: var(--one-wrong);
  color: #fff;
}

.kdl-one-feedback {
  margin-top: 22px;
  padding: 17px 18px;
  border: 1px solid;
  border-radius: 13px;
}

.kdl-one-feedback.is-correct {
  border-color: #8fd0aa;
  background: var(--one-correct-bg);
  color: #0f633c;
}

.kdl-one-feedback.is-wrong {
  border-color: #efa29b;
  background: var(--one-wrong-bg);
  color: #912018;
}

.kdl-one-feedback strong {
  display: block;
  font-size: 19px;
}

.kdl-one-feedback p {
  margin: 5px 0 0;
  color: inherit;
  font-size: 16px;
  line-height: 1.55;
}

.kdl-one-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid #edf0f5;
}

.kdl-one-actions p {
  margin: 0;
  color: var(--one-muted);
  font-size: 14px;
}

.kdl-one-next,
.kdl-one-complete button {
  min-width: 150px;
  min-height: 50px;
  padding: 0 24px;
  border: 0;
  border-radius: 12px;
  background: var(--one-brand);
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 7px 16px rgba(23,78,166,.2);
}

.kdl-one-next:hover:not(:disabled),
.kdl-one-next:focus-visible:not(:disabled),
.kdl-one-complete button:hover,
.kdl-one-complete button:focus-visible {
  background: var(--one-brand-dark);
  outline: none;
}

.kdl-one-next:disabled {
  background: #c8d0dc;
  box-shadow: none;
  cursor: not-allowed;
}

.kdl-one-complete {
  margin-top: 22px;
  padding: 54px 28px;
  border: 1px solid #cfd9e8;
  border-radius: 22px;
  background: #fff;
  text-align: center;
  box-shadow: 0 10px 28px rgba(16,24,40,.08);
}

.kdl-one-complete > span {
  display: inline-flex;
  padding: 5px 11px;
  border-radius: 999px;
  background: #e9f1ff;
  color: var(--one-brand);
  font-size: 14px;
  font-weight: 900;
}

.kdl-one-complete h2 {
  margin: 18px 0 10px;
  color: var(--one-ink);
  font-size: 30px;
  letter-spacing: -.04em;
}

.kdl-one-complete p {
  margin: 0 0 26px;
  color: var(--one-muted);
  font-size: 18px;
  font-weight: 700;
}

.kdl-one-guide {
  margin-top: 18px;
  padding: 19px 21px;
  border: 1px solid #d8e0ea;
  border-radius: 15px;
  background: #f8fafc;
}

.kdl-one-guide strong {
  display: block;
  margin-bottom: 6px;
  color: #344054;
  font-size: 15px;
}

.kdl-one-guide p {
  margin: 0;
  color: var(--one-muted);
  font-size: 14px;
  line-height: 1.7;
}

.kdl-one-live {
  position: fixed;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (max-width: 760px) {
  .kdl-one-page {
    padding-bottom: 48px;
  }

  .kdl-one-hero {
    height: 10px;
    max-height: 10px;
    padding: 0;
  }

  .kdl-one-hero p {
    font-size: 1px;
    line-height: 1px;
  }

  .kdl-one-shell {
    margin-top: 12px;
  }

  .kdl-one-dashboard {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 12px;
    border-radius: 16px;
  }

  .kdl-one-progress-block {
    grid-column: 1 / -1;
    padding: 5px 4px 8px;
  }

  .kdl-one-reset {
    grid-column: 1 / -1;
    width: 100%;
  }

  .kdl-one-card {
    margin-top: 16px;
    border-radius: 17px;
  }

  .kdl-one-card-head {
    align-items: flex-start;
    padding: 14px 16px;
  }

  .kdl-one-source em {
    flex-basis: 100%;
  }

  .kdl-one-left {
    font-size: 12px;
  }

  .kdl-one-card-body {
    padding: 24px 16px 20px;
  }

  .kdl-one-options {
    margin-top: 24px;
  }

  .kdl-one-option {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
    padding: 9px 12px 9px 9px;
  }

  .kdl-one-option-number {
    width: 32px;
    height: 32px;
  }

  .kdl-one-option-text {
    font-size: 16px;
  }

  .kdl-one-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .kdl-one-actions p {
    text-align: center;
  }

  .kdl-one-next {
    width: 100%;
  }

  .kdl-one-complete {
    padding: 42px 20px;
  }
}

/* 하루 모의고사와 동일한 문제·선택지 글자 크기 */
.kdl-one-question {
  font-size: 23px;
  line-height: 1.65;
  text-align: justify;
  text-justify: inter-character;
  word-break: break-all;
  overflow-wrap: anywhere;
}

.kdl-one-option-text {
  font-size: 20px;
  line-height: 1.65;
  text-align: justify;
  text-justify: inter-character;
  word-break: break-all;
  overflow-wrap: anywhere;
}

@media (max-width: 640px) {
  .kdl-one-question {
    font-size: 21px;
    line-height: 1.65;
  }

  .kdl-one-option-text {
    font-size: 18px;
    line-height: 1.65;
  }
}

/* 문제 아래 제시문·목록형 부연 설명 */
.kdl-one-question-main,
.kdl-one-question-detail {
  display: block;
}

.kdl-one-question-main {
  font-weight: 700;
}

.kdl-one-question-detail {
  margin-top: 0.8em;
  font-size: 21px;
  font-weight: 400;
  line-height: 1.65;
  white-space: pre-line;
  text-align: justify;
  text-justify: inter-character;
  word-break: break-all;
  overflow-wrap: anywhere;
}

@media (max-width: 640px) {
  .kdl-one-question-detail {
    font-size: 19px;
    font-weight: 400;
  }
}