.grade-guide {
  margin-top: 48px;
  color: var(--ink, #202124);
}
.grade-guide h3 {
  font-size: clamp(23px, 3vw, 32px);
  letter-spacing: -0.04em;
  margin: 8px 0 12px;
}
.grade-guide-intro,
.grade-guide-footnote {
  color: var(--muted, #686b70);
  line-height: 1.8;
}
.grade-guide-intro {
  margin-bottom: 24px;
}
.grade-guide-item {
  border: 1px solid #dedfe2;
  border-radius: 16px;
  margin: 12px 0;
  overflow: hidden;
  background: #f8f9fa;
}
.grade-guide-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
  padding: 24px;
  list-style: none;
}
.grade-guide-item summary::-webkit-details-marker {
  display: none;
}
.grade-guide-item summary:focus-visible {
  outline: 3px solid #e77d36;
  outline-offset: -4px;
  border-radius: 14px;
}
.grade-guide-label strong {
  display: block;
  font-size: 24px;
  line-height: 1.5;
}
.grade-guide-label strong span {
  font-size: 18px;
  font-weight: 600;
  margin-left: 10px;
}
.grade-guide-teaser {
  display: block;
  color: var(--muted, #686b70);
  font-size: 15px;
  line-height: 1.6;
  margin-top: 4px;
}
.grade-guide-plus {
  width: 22px;
  height: 22px;
  position: relative;
  flex: none;
  color: #c15d21;
}
.grade-guide-plus:before,
.grade-guide-plus:after {
  content: '';
  position: absolute;
  background: currentColor;
  left: 2px;
  top: 10px;
  width: 18px;
  height: 2px;
}
.grade-guide-plus:after {
  transform: rotate(90deg);
  transition: transform 0.2s;
}
.grade-guide-item[open] .grade-guide-plus:after {
  transform: rotate(0);
}
.grade-guide-body {
  padding: 0 24px 24px;
}
.grade-guide-grades {
  font-size: 13px;
  font-weight: 650;
  color: var(--brand-link, #b9551e);
  border-top: 1px solid #dedfe2;
  padding-top: 22px;
  margin: 0 0 24px;
}
.grade-guide-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.grade-guide-columns h4 {
  font-size: 18px;
  margin: 0 0 12px;
}
.grade-guide-columns h4 span {
  font-size: 13px;
  color: var(--brand-link, #b9551e);
  margin-right: 6px;
}
.grade-guide-columns p {
  font-size: 15px;
  line-height: 1.85;
  margin: 0;
}
.grade-guide-note {
  font-size: 14px;
  line-height: 1.85;
  padding: 18px 0 0;
  margin: 24px 0 0;
  border-top: 1px solid #dedfe2;
  color: var(--muted, #686b70);
}
.grade-guide-note strong {
  color: var(--ink, #202124);
  margin-right: 6px;
}
.grade-guide-sources {
  font-size: 12px;
  line-height: 2;
  margin: 16px 0 0;
  color: var(--muted, #686b70);
  overflow-wrap: anywhere;
}
.grade-guide-sources a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.grade-guide-footnote {
  font-size: 13px;
  margin-top: 20px;
}
html[data-theme='dark'] .grade-guide-item {
  background: #1b1d21;
  border-color: #393d43;
}
html[data-theme='dark'] .grade-guide-grades,
html[data-theme='dark'] .grade-guide-note {
  border-color: #393d43;
}
html[data-theme='dark'] .grade-guide-plus {
  color: #f29a60;
}
@media (max-width: 700px) {
  .grade-guide-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .grade-guide-item summary {
    padding: 20px;
  }
  .grade-guide-body {
    padding: 0 20px 20px;
  }
  .grade-guide-label strong {
    font-size: 22px;
  }
  .grade-guide-label strong span {
    font-size: 16px;
    margin-left: 6px;
  }
  .grade-guide {
    margin-top: 36px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .grade-guide-plus:after {
    transition: none;
  }
}

.grade-comparison {
  margin: 26px 0 0;
  border-top: 1px solid #dedfe2;
}
.grade-comparison > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid #dedfe2;
}
.grade-comparison dt {
  font-size: 15px;
  font-weight: 750;
  color: var(--brand-link, #b9551e);
}
.grade-comparison dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
}
html[data-theme='dark'] .grade-comparison,
html[data-theme='dark'] .grade-comparison > div {
  border-color: #393d43;
}
.grade-guide-item {
  overflow-anchor: none;
}
@media (max-width: 700px) {
  .grade-comparison > div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

.product-grade-table table {
  width: 100%;
  min-width: 0;
  table-layout: fixed;
}
.product-grade-table th:first-child {
  width: 120px;
  min-width: 0;
}
.product-grade-table td,
.product-grade-table th:last-child {
  min-width: 0;
  overflow-wrap: anywhere;
}
.grade-comparison > div {
  grid-template-columns: 130px 1fr;
}
@media (max-width: 700px) {
  .grade-comparison > div {
    grid-template-columns: 1fr;
  }
  .product-grade-table th:first-child {
    width: 80px;
  }
  .product-grade-table td,
  .product-grade-table th {
    padding: 14px 10px;
    font-size: 13px;
  }
  .grade-guide-label strong {
    overflow-wrap: anywhere;
  }
  .grade-guide-label strong span {
    display: block;
    margin-left: 0;
  }
}