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

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

.hb-layer-guide h1 {
  max-width: 980px;
  margin: 0 0 24px;
  color: var(--hb-ink);
  font-size: clamp(36px, 4.6vw, 58px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.hb-layer-guide h2 {
  margin: 76px 0 24px;
  padding-top: 20px;
  border-top: 2px solid var(--hb-ink);
  color: var(--hb-ink);
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.028em;
  scroll-margin-top: 28px;
}

.hb-layer-guide h3 {
  margin: 34px 0 12px;
  color: var(--hb-ink);
  font-size: 21px;
  line-height: 1.3;
}

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

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

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

.hb-layer-guide ul,
.hb-layer-guide ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

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

.hb-layer-guide .hb-kicker {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--hb-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

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

.hb-layer-guide .hb-toc {
  margin: 34px 0 46px;
  padding: 24px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
}

.hb-layer-guide .hb-toc-title {
  margin-bottom: 16px;
  color: var(--hb-ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hb-layer-guide .hb-toc-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  overflow: visible;
}

.hb-layer-guide .hb-toc a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid #c9c9c9;
  border-radius: 999px;
  background: var(--hb-white);
  font-size: 13px;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
}

.hb-layer-guide .hb-toc a span {
  color: var(--hb-muted);
  font-size: 12px;
  font-weight: 800;
}

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

.hb-layer-guide .hb-decision-map {
  display: grid;
  grid-template-columns: minmax(180px, .72fr) minmax(0, 2.28fr);
  margin: 30px 0;
  border: 1px solid var(--hb-ink);
  background: var(--hb-white);
}

.hb-layer-guide .hb-map-label {
  display: grid;
  place-content: center;
  min-height: 238px;
  padding: 26px;
  background: var(--hb-ink);
  color: var(--hb-white);
  text-align: center;
}

.hb-layer-guide .hb-map-label strong {
  font-size: 25px;
  line-height: 1.1;
}

.hb-layer-guide .hb-map-label small {
  margin-top: 9px;
  color: #d8d8d8;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hb-layer-guide .hb-map-routes {
  display: grid;
}

.hb-layer-guide .hb-map-route {
  display: grid;
  grid-template-columns: minmax(130px, .7fr) minmax(0, 1.3fr);
  align-items: center;
  padding: 17px 22px;
  border-bottom: 1px solid var(--hb-line);
}

.hb-layer-guide .hb-map-route:last-child {
  border-bottom: 0;
}

.hb-layer-guide .hb-map-route strong {
  color: var(--hb-ink);
  font-size: 13px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.hb-layer-guide .hb-map-route span {
  color: var(--hb-muted);
  font-size: 15px;
  line-height: 1.5;
}

.hb-layer-guide .hb-note {
  margin: 28px 0;
  padding: 22px 24px;
  border-left: 5px solid var(--hb-ink);
  background: var(--hb-soft);
}

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

.hb-layer-guide .hb-method {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 34px 0;
  border: 1px solid var(--hb-ink);
  background: var(--hb-white);
}

.hb-layer-guide .hb-method-step {
  min-height: 174px;
  padding: 24px;
  border-right: 1px solid var(--hb-line);
}

.hb-layer-guide .hb-method-step:last-child {
  border-right: 0;
}

.hb-layer-guide .hb-method-step b {
  display: block;
  margin-bottom: 24px;
  color: var(--hb-muted);
  font-size: 12px;
  letter-spacing: .1em;
}

.hb-layer-guide .hb-method-step strong {
  display: block;
  margin-bottom: 8px;
  color: var(--hb-ink);
  font-size: 20px;
  line-height: 1.25;
}

.hb-layer-guide .hb-method-step span {
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.55;
}

.hb-layer-guide .hb-image-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 36px 0;
}

.hb-layer-guide .hb-image-tile {
  margin: 0;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
}

.hb-layer-guide .hb-image-swap {
  position: relative;
  display: block;
  min-height: 470px;
  overflow: hidden;
  background: #eeeeee;
}

.hb-layer-guide .hb-image-swap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity .35s ease, transform .45s ease;
}

.hb-layer-guide .hb-image-swap img:last-child {
  opacity: 0;
}

.hb-layer-guide .hb-image-swap:hover img:first-child,
.hb-layer-guide .hb-image-swap:focus-visible img:first-child {
  opacity: 0;
}

.hb-layer-guide .hb-image-swap:hover img:last-child,
.hb-layer-guide .hb-image-swap:focus-visible img:last-child {
  opacity: 1;
  transform: translateY(-4px) scale(1.012);
}

.hb-layer-guide .hb-image-tile figcaption {
  display: flex;
  flex-direction: column;
  min-height: 178px;
  padding: 20px;
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.55;
}

.hb-layer-guide .hb-image-tile figcaption strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hb-ink);
  font-size: 17px;
}

.hb-layer-guide .hb-opening-study {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(320px, 1fr);
  margin: 36px 0;
  border: 1px solid var(--hb-ink);
  background: var(--hb-white);
}

.hb-layer-guide .hb-opening-study .hb-image-swap {
  min-height: 520px;
  border-right: 1px solid var(--hb-line);
}

.hb-layer-guide .hb-opening-states {
  display: grid;
  align-content: center;
  padding: 30px;
}

.hb-layer-guide .hb-opening-state {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hb-line);
}

.hb-layer-guide .hb-opening-state:last-child {
  border-bottom: 0;
}

.hb-layer-guide .hb-opening-state strong {
  color: var(--hb-ink);
  font-size: 13px;
  text-transform: uppercase;
}

.hb-layer-guide .hb-opening-state span {
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.55;
}

.hb-layer-guide .hb-frame-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 38px 0;
  border: 1px solid var(--hb-ink);
}

.hb-layer-guide .hb-frame-gallery figure {
  margin: 0;
  border-right: 1px solid var(--hb-line);
}

.hb-layer-guide .hb-frame-gallery figure:last-child {
  border-right: 0;
}

.hb-layer-guide .hb-frame-gallery figcaption {
  display: flex;
  flex-direction: column;
  min-height: 186px;
  padding: 20px;
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.55;
}

.hb-layer-guide .hb-frame-gallery figcaption strong {
  display: block;
  margin-bottom: 7px;
  color: var(--hb-ink);
  font-size: 17px;
}


.hb-layer-guide .hb-product-copy {
  display: block;
}

.hb-layer-guide .hb-product-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 42px;
  margin: auto auto 0;
  padding: 9px 16px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  text-underline-offset: 0;
}

.hb-layer-guide .hb-product-button:hover,
.hb-layer-guide .hb-product-button:focus-visible {
  background: var(--hb-white);
  color: var(--hb-ink);
  text-decoration: none;
}

.hb-layer-guide .hb-opening-action {
  padding-top: 20px;
  text-align: center;
}

.hb-layer-guide .hb-opening-action .hb-product-button {
  margin-top: 0;
}

.hb-layer-guide .hb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  min-height: 46px;
  margin-top: 8px;
  padding: 10px 18px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white);
  font-size: 14px;
  text-decoration: none;
}

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

.hb-layer-guide .hb-scorecard {
  display: grid;
  grid-template-columns: minmax(220px, .72fr) minmax(0, 1.28fr);
  margin: 32px 0;
  border: 2px solid var(--hb-ink);
}

.hb-layer-guide .hb-score-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 28px;
  background: var(--hb-ink);
  color: var(--hb-white);
}

.hb-layer-guide .hb-score-intro strong {
  font-size: 27px;
  line-height: 1.16;
}

.hb-layer-guide .hb-score-intro span {
  margin-top: 10px;
  color: #d8d8d8;
  font-size: 14px;
  line-height: 1.55;
}

.hb-layer-guide .hb-score-rows {
  display: grid;
}

.hb-layer-guide .hb-score-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 19px 22px;
  border-bottom: 1px solid var(--hb-line);
}

.hb-layer-guide .hb-score-row:last-child {
  border-bottom: 0;
}

.hb-layer-guide .hb-score-row b {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--hb-ink);
  color: var(--hb-ink);
  font-size: 13px;
}

.hb-layer-guide .hb-score-row strong {
  display: block;
  color: var(--hb-ink);
  font-size: 15px;
}

.hb-layer-guide .hb-score-row span {
  color: var(--hb-muted);
  font-size: 13px;
  line-height: 1.5;
}

.hb-layer-guide .hb-formula-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 30px 0;
}

.hb-layer-guide .hb-formula {
  padding: 24px;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
}

.hb-layer-guide .hb-formula small {
  color: var(--hb-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hb-layer-guide .hb-formula strong {
  display: block;
  margin: 6px 0 10px;
  color: var(--hb-ink);
  font-size: 20px;
  line-height: 1.3;
}

.hb-layer-guide .hb-formula p {
  margin: 0;
  color: var(--hb-muted);
  font-size: 15px;
  line-height: 1.6;
}

.hb-layer-guide .hb-checklist {
  margin: 30px 0;
  padding: 26px 28px;
  border: 2px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-layer-guide .hb-checklist h3 {
  margin-top: 0;
}

.hb-layer-guide .hb-related {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 32px 0;
  border: 1px solid var(--hb-ink);
}

.hb-layer-guide .hb-related a {
  display: flex;
  flex-direction: column;
  min-height: 168px;
  padding: 22px;
  border-right: 1px solid var(--hb-line);
  text-decoration: none;
}

.hb-layer-guide .hb-related a:last-child {
  border-right: 0;
}

.hb-layer-guide .hb-related small {
  margin-bottom: 12px;
  color: var(--hb-muted);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hb-layer-guide .hb-related strong {
  color: var(--hb-ink);
  font-size: 18px;
  line-height: 1.35;
}

.hb-layer-guide .hb-related span {
  margin-top: auto;
  padding-top: 18px;
  color: var(--hb-muted);
  font-size: 13px;
}

.hb-layer-guide .hb-faq {
  margin: 30px 0;
  border-top: 1px solid var(--hb-ink);
}

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

.hb-layer-guide .hb-faq summary {
  position: relative;
  padding: 21px 48px 21px 0;
  color: var(--hb-ink);
  font-weight: 800;
  line-height: 1.45;
  cursor: pointer;
  list-style: none;
}

.hb-layer-guide .hb-faq summary::-webkit-details-marker {
  display: none;
}

.hb-layer-guide .hb-faq summary::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 2px;
  font-size: 26px;
  font-weight: 400;
}

.hb-layer-guide .hb-faq details[open] summary::after {
  content: "−";
}

.hb-layer-guide .hb-faq details p {
  max-width: 900px;
  padding: 0 48px 20px 0;
  color: var(--hb-muted);
}

.hb-layer-guide .hb-cta {
  margin: 72px 0 20px;
  padding: 38px;
  border: 2px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-layer-guide .hb-cta h2 {
  margin: 0 0 16px;
  padding: 0;
  border: 0;
}

@media (max-width: 820px) {
  .hb-layer-guide {
    font-size: 16px;
  }

  .hb-layer-guide .hb-toc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hb-layer-guide .hb-method,
  .hb-layer-guide .hb-image-pair,
  .hb-layer-guide .hb-frame-gallery,
  .hb-layer-guide .hb-formula-grid,
  .hb-layer-guide .hb-related {
    grid-template-columns: 1fr;
  }

  .hb-layer-guide .hb-related a {
    border-right: 0;
    border-bottom: 1px solid var(--hb-line);
  }

  .hb-layer-guide .hb-related a:last-child {
    border-bottom: 0;
  }

  .hb-layer-guide .hb-opening-study,
  .hb-layer-guide .hb-scorecard,
  .hb-layer-guide .hb-decision-map {
    grid-template-columns: 1fr;
  }

  .hb-layer-guide .hb-method-step,
  .hb-layer-guide .hb-frame-gallery figure {
    border-right: 0;
    border-bottom: 1px solid var(--hb-line);
  }

  .hb-layer-guide .hb-method-step:last-child,
  .hb-layer-guide .hb-frame-gallery figure:last-child {
    border-bottom: 0;
  }

  .hb-layer-guide .hb-opening-study .hb-image-swap {
    min-height: 460px;
    border-right: 0;
    border-bottom: 1px solid var(--hb-line);
  }

  .hb-layer-guide .hb-map-label {
    min-height: 150px;
  }
}

@media (max-width: 580px) {
  .hb-layer-guide h1 {
    font-size: 36px;
  }

  .hb-layer-guide h2 {
    margin-top: 58px;
    font-size: 28px;
  }

  .hb-layer-guide .hb-lede {
    font-size: 18px;
  }

  .hb-layer-guide .hb-toc-grid {
    grid-template-columns: 1fr;
  }


  .hb-layer-guide .hb-toc,
  .hb-layer-guide .hb-cta {
    padding: 22px;
  }

  .hb-layer-guide .hb-image-swap,
  .hb-layer-guide .hb-opening-study .hb-image-swap {
    min-height: 350px;
  }

  .hb-layer-guide .hb-map-route {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}