/* 2026-08-31: Natural × Science chapter — material-to-research editorial sequence. */
.strength-shell .strength-traceability {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(34px, 4vw, 64px);
  min-height: 0;
  align-items: end;
  padding: clamp(74px, 7vw, 108px) var(--section-x);
  border-color: var(--strength-line);
  background: var(--strength-paper-light);
}

.strength-shell .strength-traceability-media {
  grid-column: 1 / 8;
  position: relative;
  top: auto;
  align-self: start;
  width: 100%;
  max-height: none;
  aspect-ratio: 3 / 2;
  margin: 0;
  overflow: hidden;
  background: var(--strength-stone);
}

.strength-shell .strength-traceability-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: none;
}

.strength-shell .strength-traceability-copy {
  grid-column: 8 / 13;
  align-self: end;
  width: 100%;
  margin: 0;
  padding: 0 0 2px clamp(28px, 3.3vw, 54px);
  border-left: 1px solid var(--strength-line);
}

.strength-shell .strength-traceability-copy .eyebrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--strength-line);
  color: var(--strength-faint);
  font-size: 9px;
  letter-spacing: 0.2em;
}

.strength-shell .strength-traceability-copy .eyebrow::after {
  content: attr(data-index);
  flex: 0 0 auto;
  letter-spacing: 0.12em;
}

.strength-shell .strength-traceability-copy h2 {
  max-width: none;
  margin: clamp(28px, 3.2vw, 46px) 0 0;
  color: var(--strength-ink);
  font-size: clamp(40px, 3.55vw, 54px);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1.08;
  white-space: pre-line;
  text-wrap: balance;
}

.strength-shell .strength-traceability-copy > p:not(.eyebrow) {
  max-width: 29em;
  margin: clamp(28px, 3vw, 42px) 0 0;
  color: var(--strength-muted);
  font-size: clamp(14px, 1.05vw, 16px);
  line-height: 1.86;
}

.strength-shell .strength-traceability-steps {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: clamp(58px, 6vw, 88px) 0 0;
  padding: 0;
  border-top: 1px solid var(--strength-ink);
  border-bottom: 1px solid var(--strength-line);
  list-style: none;
}

.strength-shell .strength-traceability-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: clamp(14px, 1.6vw, 24px);
  min-width: 0;
  margin: 0;
  padding: clamp(26px, 2.7vw, 40px) clamp(22px, 3vw, 44px) clamp(30px, 3.2vw, 46px);
}

.strength-shell .strength-traceability-steps li:first-child {
  padding-left: 0;
}

.strength-shell .strength-traceability-steps li + li {
  border-left: 1px solid var(--strength-line);
}

.strength-shell .strength-traceability-steps li > span {
  display: block;
  width: auto;
  height: auto;
  padding-top: 5px;
  border: 0;
  border-radius: 0;
  color: var(--strength-faint);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.strength-shell .strength-traceability-steps h3 {
  margin: 0;
  color: var(--strength-ink);
  font-family: var(--serif);
  font-size: clamp(24px, 2vw, 30px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.25;
}

.strength-shell .strength-traceability-steps p {
  max-width: 28em;
  margin: 18px 0 0;
  color: var(--strength-muted);
  font-size: 13px;
  line-height: 1.78;
}

@media (max-width: 980px) {
  .strength-shell .strength-traceability {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0;
  }

  .strength-shell .strength-traceability-media {
    grid-column: 1;
    width: 100%;
    aspect-ratio: 16 / 10;
  }

  .strength-shell .strength-traceability-copy {
    grid-column: 1;
    width: 100%;
    margin: 0;
    padding: clamp(58px, 8vw, 78px) clamp(34px, 7vw, 72px) clamp(42px, 6vw, 58px);
    border-left: 0;
  }

  .strength-shell .strength-traceability-copy h2 {
    max-width: 12em;
    font-size: clamp(42px, 7.2vw, 58px);
  }

  .strength-shell .strength-traceability-copy > p:not(.eyebrow) {
    max-width: 32em;
    margin-left: clamp(52px, 10vw, 110px);
  }

  .strength-shell .strength-traceability-steps {
    grid-column: 1;
    margin: 0 clamp(34px, 7vw, 72px) clamp(62px, 8vw, 90px);
  }
}

@media (max-width: 760px) {
  .strength-shell .strength-traceability-media {
    aspect-ratio: 4 / 3;
  }

  .strength-shell .strength-traceability-copy {
    padding: 50px 20px 34px;
  }

  .strength-shell .strength-traceability-copy .eyebrow {
    padding-bottom: 12px;
  }

  .strength-shell .strength-traceability-copy h2 {
    max-width: none;
    margin-top: 27px;
    font-size: clamp(35px, 9.8vw, 42px);
    line-height: 1.12;
  }

  .strength-shell .strength-traceability-copy > p:not(.eyebrow) {
    max-width: 27em;
    margin-top: 26px;
    margin-left: clamp(42px, 12vw, 64px);
    font-size: 15px;
    line-height: 1.82;
  }

  .strength-shell .strength-traceability-steps {
    display: block;
    margin: 0 20px 60px;
  }

  .strength-shell .strength-traceability-steps li,
  .strength-shell .strength-traceability-steps li + li,
  .strength-shell .strength-traceability-steps li:first-child {
    grid-template-columns: 34px minmax(0, 1fr);
    column-gap: 14px;
    padding: 28px 0 30px;
    border-left: 0;
    border-bottom: 1px solid var(--strength-line);
  }

  .strength-shell .strength-traceability-steps li:last-child {
    border-bottom: 0;
  }

  .strength-shell .strength-traceability-steps h3 {
    font-size: 25px;
  }

  .strength-shell .strength-traceability-steps p {
    margin-top: 12px;
    font-size: 14px;
    line-height: 1.78;
  }
}