.why-page { background: #f3f1e8; color: #171a17; }

.why-page-hero {
  position: relative;
  min-height: 43rem;
  display: flex;
  align-items: end;
  padding: clamp(10rem, 18vw, 14rem) 0 clamp(4.5rem, 8vw, 7rem);
  color: #fff;
  background:
    linear-gradient(90deg, rgba(9, 16, 13, .92) 0%, rgba(9, 16, 13, .74) 48%, rgba(9, 16, 13, .44) 100%),
    url('images/footer-biochar-background.webp') center / cover;
}

.why-page-hero-grid,
.why-page-proof-grid,
.why-page-next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(19rem, .8fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: end;
}

.why-page-hero h1 {
  max-width: 54rem;
  margin: 1rem 0 0;
  font-family: var(--condensed);
  font-size: clamp(4.6rem, 9vw, 9rem);
  font-weight: 700;
  letter-spacing: -.045em;
  line-height: .82;
}

.why-page-hero-copy { padding-bottom: .45rem; }
.why-page-hero-copy p { margin: 0; font-size: clamp(1.12rem, 1.6vw, 1.35rem); line-height: 1.55; }
.why-page-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem 1.5rem; margin-top: 2rem; }
.why-page .button { background: #00a800; color: #fff; }
.why-page-text-link { display: inline-flex; align-items: center; gap: .55rem; font-family: var(--condensed); font-weight: 700; }
.why-page-text-link span { transition: transform .25s ease; }
.why-page-text-link:hover span { transform: translateX(.25rem); }

.why-page-proof { padding: clamp(5rem, 9vw, 8rem) 0; background: #e7ebe4; }
.why-page-proof-grid { align-items: start; }
.why-page-proof .display { max-width: 48rem; font-size: clamp(3.25rem, 6.2vw, 6rem); }
.why-page-proof blockquote { margin: 0; padding-left: 1.6rem; border-left: 4px solid #00a800; }
.why-page-proof blockquote p { margin: 0 0 1rem; font-family: var(--condensed); font-size: clamp(1.85rem, 3.2vw, 3rem); font-weight: 700; line-height: 1.08; }
.why-page-proof cite { font-style: normal; font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.why-page-proof cite a { text-decoration: underline; text-underline-offset: .2em; }

.why-page-chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 1rem; align-items: center; margin-top: clamp(3.5rem, 7vw, 6rem); }
.why-page-chain div {
  min-height: 9rem;
  padding: 1.4rem;
  border-top: 1px solid rgba(23, 26, 23, .28);
  display: grid;
  grid-template-rows: 4rem auto;
  align-content: start;
}

.why-page-chain strong {
  display: block;
  font-family: var(--condensed);
  font-size: 2rem;
  line-height: 1;
}
.why-page-chain span { display: block; margin-top: 1.2rem; color: #4e5c54; }
.why-page-chain > span {
  position: relative;
  width: 2.5rem;
  height: 1.25rem;
  margin: 0;
  overflow: visible;
  color: transparent;
  font-size: 0;
}
.why-page-chain > span::before {
  content: '';
  position: absolute;
  top: 50%;
  left: .1rem;
  width: 2rem;
  height: .32rem;
  border-radius: 999px;
  background: #00a800;
  transform: translateY(-50%);
}
.why-page-chain > span::after {
  content: '';
  position: absolute;
  top: 50%;
  right: .15rem;
  width: .82rem;
  height: .82rem;
  border-top: .32rem solid #00a800;
  border-right: .32rem solid #00a800;
  border-radius: .16rem;
  transform: translateY(-50%) rotate(45deg);
}

.why-page-benefits { padding: clamp(5rem, 9vw, 9rem) 0; }
.why-page-section-heading { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(17rem, .8fr); gap: 1.5rem clamp(2rem, 6vw, 6rem); align-items: end; margin-bottom: clamp(3.5rem, 7vw, 6rem); }
.why-page-section-heading .kicker { grid-column: 1 / -1; }
.why-page-section-heading .display { max-width: 52rem; }
.why-page-section-heading > p { margin: 0; font-size: 1.1rem; line-height: 1.65; }

.why-page-benefit-list { border-bottom: 1px solid rgba(23, 26, 23, .18); }
.why-page-benefit { display: grid; grid-template-columns: minmax(18rem, .9fr) minmax(0, 1.1fr); gap: clamp(2rem, 7vw, 7rem); padding: clamp(2.8rem, 6vw, 5.2rem) 0; border-top: 1px solid rgba(23, 26, 23, .18); }
.why-page-benefit-title { display: grid; grid-template-columns: auto 1fr; gap: .8rem 1.2rem; align-content: start; }
.why-page-benefit-title .why-icon { grid-row: 1 / span 2; margin: 0; }
.why-page-number { align-self: center; color: #00a800; font-family: var(--condensed); font-size: .85rem; font-weight: 800; letter-spacing: .12em; }
.why-page-benefit h3 { grid-column: 2; margin: 0; max-width: 29rem; font-family: var(--condensed); font-size: clamp(2.4rem, 4.4vw, 4.5rem); font-weight: 800; letter-spacing: -.035em; line-height: .9; }
.why-page-benefit-copy { max-width: 42rem; }
.why-page-benefit-copy > p:first-child { margin: 0; font-size: clamp(1.1rem, 1.6vw, 1.3rem); line-height: 1.65; }
.why-page-best-for { margin: 1.5rem 0 0; padding-top: 1.2rem; border-top: 1px solid rgba(23, 26, 23, .14); color: #4e5c54; }

.why-page-applications {
  padding: clamp(5rem, 9vw, 9rem) 0;
  background-color: #10251f;
  background-image:
    linear-gradient(90deg, rgba(5, 20, 15, .9), rgba(7, 28, 21, .78)),
    url('images/why-use-biochar-forest.webp');
  background-position: center;
  background-size: cover;
  color: #fff;
}
.why-page-applications .display,
.why-page-applications .why-page-section-heading > p { text-shadow: 0 2px 18px rgba(0, 0, 0, .55); }
.why-page-section-heading--light .kicker { color: #7ee37e; }
.why-page-section-heading--light > p { color: #c7d0cb; }
.why-page-application-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: rgba(255, 255, 255, .18); border: 1px solid rgba(255, 255, 255, .18); }
.why-page-application-grid a { min-height: 15rem; display: flex; flex-direction: column; justify-content: flex-start; padding: 2.1rem 1.7rem 1.7rem; background: rgba(7, 28, 21, .86); backdrop-filter: blur(3px); transition: background .25s ease, transform .25s ease; }
.why-page-application-grid a:hover { position: relative; z-index: 1; background: rgba(16, 65, 48, .94); transform: translateY(-.25rem); }
.why-page-application-grid strong { font-family: var(--condensed); font-size: 2.4rem; line-height: 1; }
.why-page-application-grid span { margin-top: .85rem; color: #c7d0cb; line-height: 1.5; }
.why-page-applications-button { margin-top: 2rem; }

.why-page-faq { padding: clamp(5rem, 9vw, 9rem) 0; background: #fff; }
.why-page-faq-layout { display: grid; grid-template-columns: minmax(18rem, .75fr) minmax(0, 1.25fr); gap: clamp(3rem, 8vw, 8rem); align-items: start; }
.why-page-faq-layout > div:first-child { position: sticky; top: 2rem; }
.why-page-faq-layout .display { margin: 1rem 0 1.5rem; }
.why-page-faq-layout > div:first-child > p { max-width: 34rem; color: #566159; line-height: 1.65; }
.why-page-faq-list details { border-top: 1px solid rgba(23, 26, 23, .2); padding: 1.6rem 0; }
.why-page-faq-list details:last-child { border-bottom: 1px solid rgba(23, 26, 23, .2); }
.why-page-faq-list summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; font-family: var(--condensed); font-size: clamp(1.55rem, 2.7vw, 2.25rem); font-weight: 750; line-height: 1; }
.why-page-faq-list summary::-webkit-details-marker { display: none; }
.why-page-faq-list summary::after { content: '+'; color: #00a800; }
.why-page-faq-list details[open] summary::after { content: '−'; }
.why-page-faq-list details p { max-width: 49rem; margin: 1.25rem 0 .25rem; color: #4e5c54; line-height: 1.65; }
.why-page-inline-calculator { color: #008f00; font-weight: 750; text-decoration: underline; text-decoration-thickness: .12em; text-underline-offset: .18em; }
.why-page-inline-calculator:hover { color: #006f00; }

.why-page-next { padding: clamp(5rem, 9vw, 8rem) 0; background: #dfe6dc; }
.why-page-next-grid { align-items: start; }
.why-page-next-grid > div:last-child p { margin: 0 0 1.7rem; font-size: 1.15rem; line-height: 1.65; }
.why-page-next-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 1rem; }
.why-page-next .why-page-calculator-open { display: inline-flex; align-items: center; }
.why-page-next .why-page-text-link { margin: 0; color: #171a17; }

@media (max-width: 900px) {
  .why-page-hero-grid,
  .why-page-proof-grid,
  .why-page-next-grid,
  .why-page-section-heading,
  .why-page-benefit,
  .why-page-faq-layout { grid-template-columns: 1fr; }
  .why-page-hero { min-height: 40rem; }
  .why-page-chain { grid-template-columns: 1fr 1fr; }
  .why-page-chain > span { display: none; }
  .why-page-application-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .why-page-faq-layout > div:first-child { position: static; }
}

@media (max-width: 580px) {
  .why-page-hero { min-height: 36rem; }
  .why-page-hero h1 { font-size: clamp(3.8rem, 18vw, 5.6rem); }
  .why-page-chain,
  .why-page-application-grid { grid-template-columns: 1fr; }
  .why-page-chain div { min-height: 0; }
  .why-page-benefit-title { grid-template-columns: auto 1fr; }
  .why-page-benefit h3 { font-size: 2.6rem; }
  .why-page-next-grid .why-page-text-link { display: flex; margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .why-page-application-grid a,
  .why-page-text-link span { transition: none; }
}