.hb-cold-guide {
  --hb-ink: #111111;
  --hb-copy: #333333;
  --hb-muted: #6f6f6f;
  --hb-line: #dedede;
  --hb-soft: #f5f5f5;
  --hb-white: #ffffff;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  color: var(--hb-copy);
  background: var(--hb-white);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.72;
}

.hb-cold-guide,
.hb-cold-guide * {
  box-sizing: border-box;
}

.hb-cold-guide h1,
.hb-cold-guide h2,
.hb-cold-guide h3,
.hb-cold-guide p,
.hb-cold-guide ul,
.hb-cold-guide figure {
  margin-top: 0;
}

.hb-cold-guide h1 {
  max-width: 980px;
  margin-bottom: 24px;
  color: var(--hb-ink);
  font-size: clamp(36px, 4vw, 54px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.hb-cold-guide h2 {
  margin: 68px 0 22px;
  padding-top: 20px;
  border-top: 2px solid var(--hb-ink);
  color: var(--hb-ink);
  font-size: clamp(27px, 3vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.hb-cold-guide h3 {
  margin: 32px 0 12px;
  color: var(--hb-ink);
  font-size: 21px;
  line-height: 1.3;
}

.hb-cold-guide p {
  margin-bottom: 18px;
}

.hb-cold-guide ul {
  margin-bottom: 24px;
  padding-left: 24px;
}

.hb-cold-guide li {
  margin-bottom: 10px;
}

.hb-cold-guide a {
  color: var(--hb-ink);
  font-weight: 700;
  text-decoration-color: #8a8a8a;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.hb-cold-guide a:hover {
  text-decoration-color: var(--hb-ink);
}

.hb-cold-guide .hb-lede {
  max-width: 940px;
  margin-bottom: 30px;
  color: #262626;
  font-size: 20px;
  line-height: 1.65;
}

.hb-cold-guide .hb-toc {
  margin: 34px 0 50px;
  padding: 24px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
}

.hb-cold-guide .hb-toc-label {
  margin-bottom: 15px;
  color: var(--hb-ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hb-cold-guide .hb-toc-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

.hb-cold-guide .hb-toc a {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 11px 13px;
  border: 1px solid #c8c8c8;
  background: var(--hb-white);
  font-size: 13px;
  line-height: 1.35;
  text-decoration: none;
}

.hb-cold-guide .hb-toc a:hover {
  border-color: var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white);
}

.hb-cold-guide .hb-test {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  margin: 32px 0;
  border: 1px solid var(--hb-ink);
  background: var(--hb-white);
}

.hb-cold-guide .hb-test-number {
  display: grid;
  place-items: center;
  min-height: 150px;
  background: var(--hb-ink);
  color: var(--hb-white);
  font-size: 40px;
  font-weight: 800;
}

.hb-cold-guide .hb-test-copy {
  padding: 26px 30px;
}

.hb-cold-guide .hb-test-copy strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hb-ink);
  font-size: 18px;
}

.hb-cold-guide .hb-test-copy p {
  margin-bottom: 0;
}

.hb-cold-guide .hb-signal-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 30px 0;
  border-top: 1px solid var(--hb-ink);
  border-bottom: 1px solid var(--hb-ink);
}

.hb-cold-guide .hb-signal {
  padding: 20px;
  border-right: 1px solid var(--hb-line);
}

.hb-cold-guide .hb-signal:last-child {
  border-right: 0;
}

.hb-cold-guide .hb-signal strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hb-ink);
  font-size: 13px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.hb-cold-guide .hb-signal span {
  display: block;
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.5;
}

.hb-cold-guide .hb-note {
  margin: 28px 0;
  padding: 23px 25px;
  border-left: 5px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-cold-guide .hb-note strong {
  color: var(--hb-ink);
}

.hb-cold-guide .hb-product-panel {
  display: grid;
  grid-template-columns: minmax(310px, .95fr) minmax(320px, 1.05fr);
  margin: 42px 0;
  overflow: hidden;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
  box-shadow: 0 8px 22px rgba(0, 0, 0, .045);
  transform: translateY(0);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}

.hb-cold-guide .hb-product-panel:hover {
  border-color: #bcbcbc;
  box-shadow: 0 22px 48px rgba(0, 0, 0, .12);
  transform: translateY(-7px);
}

.hb-cold-guide .hb-product-panel.hb-image-right {
  grid-template-columns: minmax(320px, 1.05fr) minmax(310px, .95fr);
}

.hb-cold-guide .hb-product-panel.hb-image-right .hb-product-link {
  order: 2;
}

.hb-cold-guide .hb-product-panel.hb-image-right .hb-product-copy {
  order: 1;
}

.hb-cold-guide .hb-product-link {
  position: relative;
  display: block;
  min-height: 535px;
  overflow: hidden;
  background: var(--hb-soft);
  outline: none;
}

.hb-cold-guide .hb-product-link img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 20px;
  object-fit: contain;
  opacity: 1;
  transform: scale(1);
  transition: opacity .38s ease, transform .55s ease;
}

.hb-cold-guide .hb-product-link .hb-hover {
  opacity: 0;
}

.hb-cold-guide .hb-product-link:hover .hb-primary,
.hb-cold-guide .hb-product-link:focus-visible .hb-primary {
  opacity: 0;
  transform: scale(1.025);
}

.hb-cold-guide .hb-product-link:hover .hb-hover,
.hb-cold-guide .hb-product-link:focus-visible .hb-hover {
  opacity: 1;
  transform: scale(1.018);
}

.hb-cold-guide .hb-product-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 4.5vw, 54px);
}

.hb-cold-guide .hb-eyebrow {
  margin-bottom: 10px;
  color: var(--hb-muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.hb-cold-guide .hb-product-copy h3 {
  margin-top: 0;
  font-size: 25px;
}

.hb-cold-guide .hb-product-caption {
  margin-top: 3px;
  color: var(--hb-muted);
  font-size: 13px;
  line-height: 1.5;
}

.hb-cold-guide .hb-button {
  align-self: flex-start;
  display: inline-block;
  margin-top: 10px;
  padding: 12px 18px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white);
  font-size: 14px;
  text-decoration: none;
}

.hb-cold-guide .hb-button:hover {
  background: var(--hb-white);
  color: var(--hb-ink);
}

.hb-cold-guide .hb-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 30px 0;
  border: 1px solid var(--hb-ink);
}

.hb-cold-guide .hb-choice {
  padding: 25px;
  border-right: 1px solid var(--hb-line);
}

.hb-cold-guide .hb-choice:last-child {
  border-right: 0;
}

.hb-cold-guide .hb-choice-label {
  display: block;
  margin-bottom: 9px;
  color: var(--hb-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hb-cold-guide .hb-choice h3 {
  margin: 0 0 12px;
}

.hb-cold-guide .hb-choice ul {
  margin-bottom: 0;
}

.hb-cold-guide .hb-formulas {
  margin: 30px 0;
  border: 1px solid var(--hb-ink);
}

.hb-cold-guide .hb-formula {
  display: grid;
  grid-template-columns: 135px minmax(0, 1.4fr) minmax(250px, .8fr);
  align-items: center;
  gap: 22px;
  padding: 23px;
  border-bottom: 1px solid var(--hb-line);
}

.hb-cold-guide .hb-formula:last-child {
  border-bottom: 0;
}

.hb-cold-guide .hb-formula strong {
  color: var(--hb-ink);
  font-size: 14px;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.hb-cold-guide .hb-formula p {
  margin-bottom: 0;
}

.hb-cold-guide .hb-formula span {
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.5;
}

.hb-cold-guide .hb-check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 30px 0;
  border-top: 1px solid var(--hb-ink);
}

.hb-cold-guide .hb-check {
  padding: 20px 20px 20px 0;
  border-bottom: 1px solid var(--hb-line);
}

.hb-cold-guide .hb-check:nth-child(3n+2),
.hb-cold-guide .hb-check:nth-child(3n+3) {
  padding-left: 20px;
}

.hb-cold-guide .hb-check strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hb-ink);
  font-size: 13px;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.hb-cold-guide .hb-check span {
  display: block;
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.5;
}

.hb-cold-guide .hb-related {
  margin-top: 64px;
  padding: 30px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
}

.hb-cold-guide .hb-related h2 {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.hb-cold-guide .hb-related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.hb-cold-guide .hb-related a {
  display: block;
  padding: 18px;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
  text-decoration: none;
}

.hb-cold-guide .hb-related a:hover {
  border-color: var(--hb-ink);
}

.hb-cold-guide .hb-related strong {
  display: block;
  margin-bottom: 5px;
}

.hb-cold-guide .hb-related span {
  color: var(--hb-muted);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
}

.hb-cold-guide .hb-faq details {
  margin-bottom: 12px;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
}

.hb-cold-guide .hb-faq summary {
  padding: 18px 20px;
  color: var(--hb-ink);
  font-weight: 700;
  cursor: pointer;
}

.hb-cold-guide .hb-faq details p {
  margin-bottom: 0;
  padding: 0 20px 20px;
}

.hb-cold-guide .hb-final {
  margin-top: 64px;
  padding: clamp(30px, 5vw, 54px);
  border: 2px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-cold-guide .hb-final h2 {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

@media (max-width: 820px) {

  .hb-cold-guide {
    font-size: 16px;
    line-height: 1.68;
  }

  .hb-cold-guide h2 {
    margin-top: 54px;
  }

  .hb-cold-guide .hb-toc-grid,
  .hb-cold-guide .hb-signal-row,
  .hb-cold-guide .hb-product-panel,
  .hb-cold-guide .hb-product-panel.hb-image-right,
  .hb-cold-guide .hb-choice-grid,
  .hb-cold-guide .hb-check-grid,
  .hb-cold-guide .hb-related-grid,
  .hb-cold-guide .hb-formula {
    grid-template-columns: 1fr;
  }

  .hb-cold-guide .hb-product-panel.hb-image-right .hb-product-link {
    order: 1;
  }

  .hb-cold-guide .hb-product-panel.hb-image-right .hb-product-copy {
    order: 2;
  }

  .hb-cold-guide .hb-signal,
  .hb-cold-guide .hb-choice {
    border-right: 0;
    border-bottom: 1px solid var(--hb-line);
  }

  .hb-cold-guide .hb-signal:last-child,
  .hb-cold-guide .hb-choice:last-child {
    border-bottom: 0;
  }

  .hb-cold-guide .hb-product-link {
    min-height: 430px;
  }

  .hb-cold-guide .hb-formula {
    gap: 8px;
  }

  .hb-cold-guide .hb-check,
  .hb-cold-guide .hb-check:nth-child(3n+2),
  .hb-cold-guide .hb-check:nth-child(3n+3) {
    padding: 17px 0;
  }
}

@media (max-width: 540px) {

  .hb-cold-guide .hb-test {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .hb-cold-guide .hb-test-number {
    font-size: 30px;
  }

  .hb-cold-guide .hb-test-copy {
    padding: 22px;
  }

  .hb-cold-guide .hb-product-link {
    min-height: 370px;
  }
}

@media (hover: none) {

  .hb-cold-guide .hb-hover {
    display: none;
  }

  .hb-cold-guide .hb-product-panel:hover {
    box-shadow: 0 8px 22px rgba(0, 0, 0, .045);
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {

  .hb-cold-guide .hb-product-panel,
  .hb-cold-guide .hb-product-link img {
    transition: none;
  }
}