:root {
  color: #302b42;
  background: #e6e1f3;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-synthesis: none;
}

* { box-sizing: border-box; }
body { margin: 0; }

.page {
  width: min(100% - 80px, 1040px);
  margin-inline: auto;
  padding-block: 72px 42px;
}

.question-number {
  margin: 0 0 20px;
  color: #655486;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
}

h1 {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin: 0;
  font-size: clamp(28px, 4.5vw, 46px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.035em;
}

.question-label {
  color: #6d548e;
  font-size: .63em;
  letter-spacing: 0;
}

.intro {
  margin: 16px 0 0;
  color: #665e75;
  font-size: 16px;
  line-height: 1.8;
}

.assignment {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 22px;
  margin-block: 34px 30px;
  padding: 24px 0;
  border-block: 1px solid #c7bcd9;
}

.assignment h2 {
  margin: 3px 0 0;
  color: #6d548e;
  font-size: 13px;
  line-height: 1.8;
  font-weight: 700;
}

.assignment p {
  margin: 0;
  max-width: 52em;
  font-size: 15px;
  line-height: 1.95;
}

.sites {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.site-link {
  display: flex;
  align-items: center;
  min-height: 136px;
  padding: 24px 30px;
  border: 1px solid #b9a8d3;
  border-radius: 8px;
  color: #49345f;
  background: #f6f3fc;
  text-decoration: none;
  transition: background-color .15s ease, border-color .15s ease;
}

.site-link:hover {
  border-color: #80659f;
  background: #fff;
}

.site-link:focus-visible {
  outline: 3px solid #69418f;
  outline-offset: 4px;
  background: #fff;
}

.site-letter {
  min-width: 74px;
  font-size: 48px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: -.04em;
}

.site-label {
  font-size: 16px;
  font-weight: 600;
}

.link-arrow { margin-left: auto; flex-shrink: 0; }

.tab-note {
  margin: 22px 0 0;
  color: #70677e;
  text-align: center;
  font-size: 12px;
  line-height: 1.7;
}

@media (max-width: 620px) {
  .page { width: min(100% - 40px, 1040px); padding-block: 36px 30px; }
  .question-number { margin-bottom: 16px; font-size: 10px; }
  h1 { gap: 6px 16px; }
  .intro { font-size: 14px; }
  .assignment { grid-template-columns: 1fr; gap: 8px; margin-block: 26px; padding-block: 20px; }
  .assignment p { font-size: 14px; }
  .sites { grid-template-columns: 1fr; gap: 12px; }
  .site-link { min-height: 98px; padding: 22px 24px; }
  .site-letter { min-width: 62px; font-size: 40px; }
  .site-label { font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .site-link { transition: none; }
}