.formula-sheet {
  margin: 0 0 16px;
  border: 1px solid var(--line, var(--exam-line, #dce4df));
  border-radius: 0.75rem;
  background: #f7f9f6;
}

.formula-sheet > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  min-height: 2.75rem;
  padding: 10px 14px;
  cursor: pointer;
  list-style: none;
}

.formula-sheet > summary::-webkit-details-marker {
  display: none;
}

.formula-sheet > summary:hover {
  background: rgba(218, 241, 237, 0.45);
}

.formula-sheet > summary:focus-visible {
  outline: 3px solid #0b746b;
  outline-offset: 2px;
}

.formula-sheet__kicker {
  padding: 2px 8px;
  border-radius: 999px;
  background: #daf1ed;
  color: #0a5b55;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.formula-sheet__summary strong {
  color: #102522;
  font-size: 15px;
}

.formula-sheet__subject {
  color: #687875;
  font-size: 12px;
}

.formula-sheet__toggle {
  margin-left: auto;
  color: #0b746b;
  font-size: 13px;
  font-weight: 750;
}

.formula-sheet__body {
  padding: 0 14px 14px;
  border-top: 1px solid #e6ebe8;
}

.formula-sheet__notice {
  margin: 12px 0 8px;
  color: #687875;
  font-size: 12px;
  line-height: 1.55;
}

.formula-sheet__nav {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  margin: 0 0 10px;
}

.formula-sheet__nav-button {
  min-height: 2.75rem;
  padding: 0 12px;
  border: 1px solid #cbd8d1;
  border-radius: 0.5625rem;
  background: #fff;
  color: #123c3a;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.formula-sheet__nav-button:hover:not(:disabled) {
  border-color: #0b746b;
}

.formula-sheet__nav-button:disabled {
  opacity: 0.45;
  cursor: default;
}

.formula-sheet__nav-button:focus-visible {
  outline: 3px solid #0b746b;
  outline-offset: 2px;
}

.formula-sheet__status {
  min-width: 0;
  color: #123c3a;
  font-size: 13px;
  font-weight: 750;
  text-align: center;
}

.formula-sheet__figure {
  margin: 0;
  overflow: auto;
  max-height: min(62vh, 42rem);
  border: 1px solid #e6ebe8;
  border-radius: 0.5625rem;
  background: #fff;
}

.formula-sheet__image {
  display: block;
  width: 100%;
  height: auto;
}

@media (max-width: 620px) {
  .formula-sheet__subject {
    flex-basis: 100%;
  }

  .formula-sheet__nav {
    grid-template-columns: 1fr 1fr;
  }

  .formula-sheet__status {
    grid-column: 1 / -1;
    order: -1;
  }

  .formula-sheet__figure {
    max-height: min(58vh, 28rem);
  }
}