.hb-waist-guide {
  --hb-ink: #111111;
  --hb-copy: #343434;
  --hb-muted: #6f6f6f;
  --hb-line: #dddddd;
  --hb-soft: #f5f5f3;
  --hb-white: #ffffff;

  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  color: var(--hb-copy);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.74;
}

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

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

.hb-waist-guide h1 {
  width: 100%;
  max-width: none;
  margin: 0 0 25px;
  color: var(--hb-ink);
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hb-waist-guide h2 {
  margin: 70px 0 24px;
  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: -0.026em;
}

.hb-waist-guide h3 {
  margin: 35px 0 13px;
  color: var(--hb-ink);
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.012em;
}

.hb-waist-guide p {
  margin-bottom: 19px;
}

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

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

/* INTRO */
.hb-waist-guide .hb-lede {
  width: 100%;
  max-width: none;
  margin: 0 0 31px;
  color: #252525;
  font-size: 20px;
  line-height: 1.65;
}

/* TOC */
.hb-waist-guide .hb-toc {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  margin: 30px 0 46px;
  padding: 12px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
}

.hb-waist-guide .hb-toc a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 9px 8px;
  border: 1px solid #c9c9c9;
  background: var(--hb-white);
  color: var(--hb-ink);
  font-size: 13px;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
}

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

/* QUICK PROPORTION CHECK */
.hb-waist-guide .hb-ruleline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 32px 0 41px;
  border-top: 2px solid var(--hb-ink);
  border-left: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-ruleline > div {
  padding: 20px 21px;
  border-right: 1px solid var(--hb-line);
  border-bottom: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-ruleline strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hb-ink);
  font-size: 15px;
}

.hb-waist-guide .hb-ruleline span {
  display: block;
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.55;
}

/* CALLOUT */
.hb-waist-guide .hb-pullquote {
  margin: 30px 0 34px;
  padding: 24px 28px;
  border-left: 4px solid var(--hb-ink);
  background: var(--hb-soft);
  color: #202020;
  font-size: 18px;
  line-height: 1.65;
}

/* THREE ANGLES */
.hb-waist-guide .hb-angle-check {
  margin: 27px 0 34px;
  border-top: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-angle-row {
  display: grid;
  grid-template-columns: 145px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-angle-row strong {
  color: var(--hb-ink);
}

.hb-waist-guide .hb-angle-row p {
  margin: 0;
}

/* STEP FLOW */
.hb-waist-guide .hb-sequence {
  margin: 29px 0 36px;
  padding-left: 0;
  counter-reset: hb-step;
  list-style: none;
  border-top: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-sequence li {
  position: relative;
  margin: 0;
  padding: 18px 18px 18px 58px;
  border-bottom: 1px solid var(--hb-line);
  counter-increment: hb-step;
}

.hb-waist-guide .hb-sequence li:before {
  content: counter(hb-step);
  position: absolute;
  top: 17px;
  left: 12px;
  width: 28px;
  color: var(--hb-ink);
  font-size: 19px;
  font-weight: 800;
  text-align: center;
}

/* PRODUCT SECTION */
.hb-waist-guide .hb-product-intro {
  margin: 42px 0 20px;
  padding-top: 23px;
  border-top: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-product-intro h3 {
  margin: 0 0 10px;
}

.hb-waist-guide .hb-product-intro p {
  max-width: 940px;
  margin-bottom: 0;
  color: var(--hb-muted);
}

.hb-waist-guide .hb-product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin: 25px 0 45px;
}

.hb-waist-guide .hb-product-card {
  overflow: hidden;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
  transition:
    transform .35s ease,
    box-shadow .35s ease,
    border-color .35s ease;
}

.hb-waist-guide .hb-product-card:hover {
  transform: translateY(-7px);
  border-color: #b9b9b9;
  box-shadow: 0 20px 45px rgba(0, 0, 0, .09);
}

.hb-waist-guide .hb-product-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #efefed;
}

.hb-waist-guide .hb-product-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 12px;
  object-fit: contain;
  background: #efefed;
  transition:
    opacity .38s ease,
    transform .5s ease;
}

.hb-waist-guide .hb-product-media .hb-img-front {
  opacity: 1;
}

.hb-waist-guide .hb-product-media .hb-img-hover {
  opacity: 0;
}

.hb-waist-guide .hb-product-card:hover .hb-img-front {
  opacity: 0;
}

.hb-waist-guide .hb-product-card:hover .hb-img-hover {
  opacity: 1;
}

.hb-waist-guide .hb-product-card:hover .hb-product-media img {
  transform: scale(1.025);
}

.hb-waist-guide .hb-product-copy {
  padding: 22px 22px 24px;
}

.hb-waist-guide .hb-product-label {
  display: block;
  margin-bottom: 7px;
  color: var(--hb-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.hb-waist-guide .hb-product-copy h3 {
  margin: 0 0 10px;
  color: var(--hb-ink);
  font-size: 19px;
  line-height: 1.32;
}

.hb-waist-guide .hb-product-copy p {
  margin-bottom: 17px;
  color: #4d4d4d;
  font-size: 15px;
  line-height: 1.6;
}

.hb-waist-guide .hb-button {
  display: inline-block;
  padding: 11px 17px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background .25s ease, color .25s ease;
}

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

/* KNOT FIX */
.hb-waist-guide .hb-knot-fix {
  margin: 28px 0 35px;
  padding: 25px 27px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
}

.hb-waist-guide .hb-knot-fix strong {
  display: block;
  margin-bottom: 11px;
  color: var(--hb-ink);
  font-size: 17px;
}

.hb-waist-guide .hb-knot-fix ol {
  margin: 0;
  padding-left: 22px;
}

.hb-waist-guide .hb-knot-fix li {
  margin-bottom: 8px;
}

.hb-waist-guide .hb-knot-fix li:last-child {
  margin-bottom: 0;
}

/* SILHOUETTE COMPARISON */
.hb-waist-guide .hb-silhouette {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 29px 0 36px;
  border: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-silhouette > div {
  padding: 25px 26px;
}

.hb-waist-guide .hb-silhouette > div + div {
  border-left: 1px solid var(--hb-line);
  background: var(--hb-soft);
}

.hb-waist-guide .hb-silhouette strong {
  display: block;
  margin-bottom: 9px;
  color: var(--hb-ink);
  font-size: 17px;
}

.hb-waist-guide .hb-silhouette p {
  margin-bottom: 0;
}

/* CARRY OPTIONS */
.hb-waist-guide .hb-carry-list {
  margin: 26px 0 34px;
  border-top: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-carry-item {
  display: grid;
  grid-template-columns: 165px minmax(0, 1fr);
  gap: 24px;
  padding: 19px 0;
  border-bottom: 1px solid var(--hb-line);
}

.hb-waist-guide .hb-carry-item strong {
  color: var(--hb-ink);
}

.hb-waist-guide .hb-carry-item p {
  margin: 0;
}

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

.hb-waist-guide .hb-faq summary {
  position: relative;
  padding: 18px 52px 18px 20px;
  color: var(--hb-ink);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.hb-waist-guide .hb-faq summary:after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  font-size: 23px;
  font-weight: 400;
  line-height: 1;
}

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

.hb-waist-guide .hb-faq details div {
  padding: 0 20px 20px;
}

.hb-waist-guide .hb-faq details p:last-child {
  margin-bottom: 0;
}

/* FINAL CTA */
.hb-waist-guide .hb-final {
  margin-top: 66px;
  padding: clamp(30px, 5vw, 52px);
  border: 2px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-waist-guide .hb-final h2 {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}

.hb-waist-guide .hb-final p {
  max-width: 940px;
}

.hb-waist-guide .hb-final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 25px;
}

.hb-waist-guide .hb-button-outline {
  display: inline-block;
  padding: 11px 17px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-white);
  color: var(--hb-ink);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background .25s ease, color .25s ease;
}

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

@media (max-width: 980px) {
  .hb-waist-guide .hb-toc {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .hb-waist-guide {
    font-size: 16px;
    line-height: 1.69;
  }

  .hb-waist-guide h1 {
    font-size: clamp(34px, 10vw, 46px);
  }

  .hb-waist-guide h2 {
    margin-top: 55px;
  }

  .hb-waist-guide .hb-ruleline,
  .hb-waist-guide .hb-product-grid,
  .hb-waist-guide .hb-silhouette {
    grid-template-columns: 1fr;
  }

  .hb-waist-guide .hb-angle-row,
  .hb-waist-guide .hb-carry-item {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .hb-waist-guide .hb-silhouette > div + div {
    border-top: 1px solid var(--hb-line);
    border-left: 0;
  }
}

@media (max-width: 560px) {
  .hb-waist-guide .hb-toc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .hb-waist-guide .hb-final-actions {
    flex-direction: column;
  }

  .hb-waist-guide .hb-final-actions a {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hb-waist-guide .hb-product-card,
  .hb-waist-guide .hb-product-media img {
    transition: none;
  }
}