.section-heading { display: grid; grid-template-columns: 1fr minmax(18rem, .55fr); gap: 4rem; align-items: end; margin-bottom: 4.2rem; }
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: -.5rem; }
.section-heading h2 { grid-column: 1 / -1; width: 100%; max-width: none; }
.section-heading h2, .section-heading > p:last-child { margin-bottom: 0; }
.section-heading > p:last-child { max-width: 34rem; }
.section-heading.light { color: var(--ivory); }
.section-heading.light > p:last-child { color: rgba(255,255,255,.58); }

.proof { overflow: hidden; background: var(--paper); }
.proof-intro { display: grid; grid-template-columns: 1fr minmax(20rem, .7fr); gap: 2.5rem 10%; align-items: end; margin-bottom: 4.5rem; }
.proof-intro h2 { grid-column: 1 / -1; margin-bottom: 0; font-size: var(--section-title-size); white-space: nowrap; }
.proof-copy { display: grid; grid-column: 1 / -1; gap: .8rem; }
.proof-copy p { max-width: none; margin-bottom: 0; }
.proof-copy p:last-child { margin-bottom: 0; }
.proof-note { max-width: 64rem; margin-top: 2.5rem; margin-bottom: 0; text-align: center; }

.projects { background: var(--sand); }
.projects .section-heading { margin-bottom: clamp(3.5rem, 5vw, 5rem); }
.scenario-list { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); grid-template-rows: repeat(2, min(24vw, 22rem)); gap: 1rem; }
.scenario { position: relative; display: flex; min-height: 0; flex-direction: column; justify-content: flex-end; overflow: hidden; padding: clamp(1.3rem, 2vw, 2rem); background: var(--ink); color: white; isolation: isolate; }
.scenario:nth-child(1) { grid-column: 1 / 5; grid-row: 1 / 3; }
.scenario:nth-child(2) { grid-column: 5 / 9; grid-row: 1; }
.scenario:nth-child(3) { grid-column: 9 / 13; grid-row: 1 / 3; }
.scenario:nth-child(4) { grid-column: 5 / 9; grid-row: 2; }
.scenario::after { position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(5,10,13,.08) 20%, rgba(5,10,13,.9) 100%); content: ""; }
.scenario img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.scenario:nth-child(2) img { object-position: center 66%; }
.scenario:nth-child(4) img { object-position: center 78%; }
.scenario:hover img { transform: scale(1.025); }
.scenario h3 { max-width: 15ch; margin: 0 0 .65rem; font-family: var(--serif); font-size: clamp(1.8rem, 2.7vw, 2.8rem); font-weight: 400; line-height: 1.05; }
.scenario p { max-width: 31rem; margin: 0; color: rgba(255,255,255,.72); font-size: .76rem; }

.membrane { background: var(--ivory); }
.membrane-layout { display: grid; grid-template-columns: 1.15fr .7fr; gap: 12%; align-items: end; }
.membrane-intro h2 { font-size: var(--section-title-size); }
.membrane-intro > p { max-width: 46rem; }
.benefit-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.benefit-list li { position: relative; padding: 1.15rem 1rem 1.15rem 2rem; border-bottom: 1px solid var(--line); color: var(--slate); font-size: .82rem; }
.benefit-list li::before { position: absolute; top: 1.65rem; left: .2rem; width: .55rem; height: .55rem; border: 1px solid var(--copper); border-radius: 50%; content: ""; }

.method { background: var(--paper); }
.method-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: end; margin-bottom: 4.5rem; }
.method-intro .eyebrow { grid-column: 1 / -1; margin: 0; }
.method-intro h2, .method-intro p { margin-bottom: 0; }
.timeline { display: grid; margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.timeline li { display: grid; grid-template-columns: 5rem 1fr 1fr; min-height: 8.5rem; align-items: center; border-bottom: 1px solid var(--line); transition: padding .3s, background .3s; }
.timeline li:hover { padding-inline: 1rem; background: rgba(169,120,79,.05); }
.timeline li > span { color: var(--copper); font-size: .68rem; font-weight: 700; letter-spacing: .15em; }
.timeline li > div { display: contents; }
.timeline h3 { margin: 0; font-family: var(--serif); font-size: 2rem; font-weight: 400; }
.timeline p { max-width: 34rem; margin: 0; }

.about { background: var(--ivory); }
.about-grid { display: grid; grid-template-columns: minmax(0,.78fr) minmax(0,1fr); gap: 10%; align-items: center; }
.about-portrait { position: relative; max-width: 34rem; }
.about-portrait span { position: absolute; right: -4rem; bottom: 2.5rem; padding: 1.2rem 1.5rem; background: var(--ink); color: var(--ivory); font-family: var(--serif); font-size: 1.05rem; }
.about-grid > div:last-child > p { max-width: 45rem; }
.about blockquote { max-width: 38rem; margin: 2.5rem 0 0; padding-left: 1.5rem; border-left: 1px solid var(--copper); color: var(--copper); font-family: var(--serif); font-size: clamp(1.25rem, 2vw, 1.65rem); font-style: italic; line-height: 1.45; }

.commitments { background: #212526; color: var(--ivory); }
.commitments-grid { display: grid; grid-template-columns: .9fr 1fr; gap: 10%; }
.commitment-title { position: sticky; top: 8rem; height: max-content; }
.commitment-title h2 { font-size: var(--section-title-size); }
.commitment-title > p:last-child { max-width: 31rem; color: rgba(255,255,255,.52); }
.commitment-list article { display: grid; grid-template-columns: 4rem 1fr; padding: 2.2rem 0; border-top: 1px solid rgba(255,255,255,.16); }
.commitment-list article:last-child { border-bottom: 1px solid rgba(255,255,255,.16); }
.commitment-list span { color: var(--copper-light); font-size: .67rem; }
.commitment-list h3 { margin-bottom: .45rem; font-family: var(--serif); font-size: 1.85rem; font-weight: 400; }
.commitment-list p { margin: 0; color: rgba(255,255,255,.5); }
.national { display: grid; grid-template-columns: .95fr .75fr 1fr; gap: 5%; align-items: end; margin-top: clamp(5rem, 8vw, 8rem); padding-top: 3rem; border-top: 1px solid rgba(255,255,255,.16); }
.national .eyebrow { margin-bottom: 1rem; }
.national h3 { margin: 0; font-family: var(--serif); font-size: clamp(1.8rem, 2.5vw, 2.8rem); font-weight: 400; }
.national > p { margin: 0; color: rgba(255,255,255,.5); }
.region-list { display: flex; flex-wrap: wrap; gap: .55rem; }
.region-list span { border: 1px solid rgba(255,255,255,.18); padding: .38rem .65rem; color: rgba(255,255,255,.62); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; }

.faq { background: var(--sand); }
.faq-grid { display: grid; grid-template-columns: .62fr 1fr; gap: 12%; }
.faq-grid > div:first-child { position: sticky; top: 8rem; height: max-content; }
.faq-grid > div:first-child > p:last-child { max-width: 28rem; }
.faq-list details { border-top: 1px solid rgba(22,24,25,.25); }
.faq-list details:last-child { border-bottom: 1px solid rgba(22,24,25,.25); }
.faq-list summary { display: flex; min-height: 5.5rem; align-items: center; justify-content: space-between; gap: 1rem; cursor: pointer; font-family: var(--serif); font-size: 1.28rem; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary svg { flex: 0 0 auto; color: var(--copper); transition: transform .3s; }
.faq-list details[open] summary svg { transform: rotate(45deg); }
.faq-list details p { max-width: 43rem; margin-bottom: 2rem; }

.contact { padding-block: clamp(7rem, 11vw, 11rem); background: #111819; color: white; }
.contact-grid { display: grid; grid-template-columns: .68fr 1fr; gap: 9%; align-items: start; }
.contact-intro { position: sticky; top: 8rem; }
.contact-intro h2 { font-size: var(--section-title-size); }
.contact-intro > p:not(.eyebrow) { max-width: 35rem; color: rgba(255,255,255,.58); }
.direct-contact { display: grid; max-width: 30rem; margin-top: 3rem; border-top: 1px solid rgba(255,255,255,.17); }
.direct-contact a { display: grid; grid-template-columns: 1.5rem 1fr; gap: 1rem; align-items: center; padding: 1rem 0; border-bottom: 1px solid rgba(255,255,255,.17); }
.direct-contact a > svg { color: var(--copper-light); }
.direct-contact small { display: block; color: rgba(255,255,255,.42); font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; }

footer { padding-block: 4rem 2rem; background: #0c1011; color: white; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: start; }
.footer-grid p { color: rgba(255,255,255,.45); font-size: .75rem; }
.footer-grid > div { display: grid; justify-content: end; text-align: right; font-size: .78rem; }
.footer-bottom { display: flex; justify-content: space-between; margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.35); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; }