.hb-mertra-guide {
  --hb-ink: #111111;
  --hb-copy: #333333;
  --hb-muted: #686868;
  --hb-line: #dedede;
  --hb-soft: #f6f6f6;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  color: var(--hb-copy);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.75;
}
.hb-mertra-guide,
.hb-mertra-guide * {
  box-sizing: border-box;
}
.hb-mertra-guide p,
.hb-mertra-guide h2,
.hb-mertra-guide h3 {
  margin-top: 0;
}
.hb-mertra-guide p {
  margin-bottom: 21px;
}
.hb-mertra-guide h2 {
  margin: 64px 0 22px;
  padding-top: 18px;
  border-top: 2px solid var(--hb-ink);
  color: var(--hb-ink);
  font-size: clamp(26px, 3vw, 35px);
  line-height: 1.22;
  letter-spacing: -.025em;
  scroll-margin-top: 24px;
}
.hb-mertra-guide a {
  color: var(--hb-ink);
  font-weight: 700;
  text-decoration-color: #8b8b8b;
  text-underline-offset: 4px;
}
.hb-mertra-guide a:hover {
  text-decoration-color: var(--hb-ink);
}
.hb-mertra-guide .hb-lede {
  margin-bottom: 28px;
  color: #202020;
  font-size: 20px;
  line-height: 1.66;
}
.hb-mertra-guide .hb-toc {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  margin: 0 0 43px;
  padding: 11px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
}
.hb-mertra-guide .hb-toc a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 45px;
  padding: 9px 7px;
  border: 1px solid #cbcbcb;
  background: #fff;
  font-size: 13px;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
}
.hb-mertra-guide .hb-toc a:hover,
.hb-mertra-guide .hb-toc a:focus-visible {
  border-color: var(--hb-ink);
  background: var(--hb-ink);
  color: #fff;
}
.hb-mertra-guide .hb-sock-compare {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 27px 0 33px;
  border-top: 1px solid var(--hb-line);
  border-left: 1px solid var(--hb-line);
}
.hb-mertra-guide .hb-sock-compare > div {
  min-width: 0;
  padding: 18px 19px;
  border-right: 1px solid var(--hb-line);
  border-bottom: 1px solid var(--hb-line);
}
.hb-mertra-guide .hb-sock-compare strong {
  display: block;
  margin-bottom: 7px;
  color: var(--hb-ink);
  font-size: 15px;
}
.hb-mertra-guide .hb-sock-compare p {
  margin: 0;
  color: #555;
  font-size: 15px;
  line-height: 1.62;
}
.hb-mertra-guide .hb-product-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 18px;
  margin: 28px 0 35px;
}
.hb-mertra-guide .hb-product-card {
  display: flex;
  flex: 1 1 270px;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--hb-line);
  background: #fff;
  color: var(--hb-copy);
  text-decoration: none;
}
.hb-mertra-guide .hb-product-card:hover,
.hb-mertra-guide .hb-product-card:focus-visible {
  border-color: #777;
  text-decoration: none;
}
.hb-mertra-guide .hb-product-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: var(--hb-soft);
}
.hb-mertra-guide .hb-product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 20px 21px 23px;
}
.hb-mertra-guide .hb-product-kicker {
  display: block;
  margin-bottom: 7px;
  color: var(--hb-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .065em;
  text-transform: uppercase;
}
.hb-mertra-guide .hb-product-name {
  display: block;
  margin-bottom: 11px;
  color: var(--hb-ink);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.3;
}
.hb-mertra-guide .hb-product-desc {
  display: block;
  flex: 1;
  margin-bottom: 19px;
  color: #4b4b4b;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.68;
}
.hb-mertra-guide .hb-product-action {
  display: inline-block;
  align-self: flex-start;
  max-width: 100%;
  padding: 11px 18px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
}
.hb-mertra-guide .hb-product-card:hover .hb-product-action,
.hb-mertra-guide .hb-product-card:focus-visible .hb-product-action {
  background: #fff;
  color: var(--hb-ink);
}
.hb-mertra-guide .hb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 45px;
  max-width: 100%;
  padding: 11px 19px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
}
.hb-mertra-guide .hb-button:hover,
.hb-mertra-guide .hb-button:focus-visible {
  background: #fff;
  color: var(--hb-ink);
  text-decoration: none;
}
.hb-mertra-guide .hb-faq .hb-faq-item {
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--hb-line);
}
.hb-mertra-guide .hb-faq .hb-faq-item:first-of-type {
  border-top: 1px solid var(--hb-line);
}
.hb-mertra-guide .hb-faq .hb-faq-item h3 {
  margin: 0 0 9px;
  color: var(--hb-ink);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.42;
}
.hb-mertra-guide .hb-faq .hb-faq-item p {
  margin: 0;
  line-height: 1.72;
}
.hb-mertra-guide .hb-final-cta {
  margin-top: 52px;
  padding: clamp(26px, 4vw, 42px);
  border: 2px solid var(--hb-ink);
  background: var(--hb-soft);
}
.hb-mertra-guide .hb-final-cta > strong {
  display: block;
  margin-bottom: 13px;
  color: var(--hb-ink);
  font-size: clamp(23px, 3vw, 30px);
  line-height: 1.25;
}
.hb-mertra-guide .hb-final-cta p {
  margin-bottom: 19px;
}
@media (max-width: 850px) {
  .hb-mertra-guide .hb-toc {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .hb-mertra-guide {
    font-size: 16px;
    line-height: 1.7;
  }
  .hb-mertra-guide .hb-lede {
    font-size: 18px;
  }
  .hb-mertra-guide h2 {
    margin-top: 51px;
  }
  .hb-mertra-guide .hb-sock-compare {
    grid-template-columns: 1fr;
  }
  .hb-mertra-guide .hb-sock-compare > div {
    padding: 14px 17px;
  }
  .hb-mertra-guide .hb-product-card {
    flex-basis: 100% !important;
  }
  .hb-mertra-guide .hb-product-body {
    padding: 18px 18px 21px;
  }
}
@media (max-width: 460px) {
  .hb-mertra-guide .hb-toc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}