.ground-guide .ground-hero{padding-bottom:35px}.ground-hero h1{font-size:clamp(2.6rem,5vw,5.5rem)}.ground-hero .large{max-width:760px}.ground-jump{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0}.ground-jump a{border:1px solid var(--line);border-radius:30px;padding:10px 18px;background:white}.ground-jump a:hover{background:var(--lime)}.ground-context{max-width:1000px;color:var(--muted);font-size:.9rem;border-left:3px solid #8fa875;padding-left:20px}.ground-sections{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding-top:20px;padding-bottom:40px}.section-card{min-width:0;background:white;border:1px solid var(--line);padding:26px;border-radius:5px;scroll-margin-top:145px}.section-card h2{font-size:clamp(1.7rem,2.4vw,2.5rem)}.section-card .eyebrow{letter-spacing:.07em;margin-bottom:14px;font-size:.69rem}.section-card img{width:100%;height:auto;margin-bottom:20px}.layer-list{list-style:none;counter-reset:layer;padding:0;margin:0}.layer-list li{counter-increment:layer;position:relative;padding:14px 0 12px 37px;border-top:1px solid var(--line)}.layer-list li:before{content:counter(layer);position:absolute;left:0;top:16px;background:var(--green);color:white;border-radius:50%;width:24px;height:24px;line-height:24px;text-align:center;font-size:12px}.layer-list p{font-size:.92rem;color:var(--muted);margin:6px 0 0}.ground-water{display:grid;grid-template-columns:1fr 1fr;gap:50px;background:#e9efdf;max-width:none;padding-left:max(32px,calc((100% - 1272px)/2));padding-right:max(32px,calc((100% - 1272px)/2))}.ground-water h2{font-size:clamp(2rem,3vw,3rem)}.ground-materials{display:grid;grid-template-columns:repeat(3,1fr);gap:0 30px}.ground-materials article{padding:30px 0;border-top:1px solid var(--line)}.ground-materials span{font-size:.75rem;color:var(--green);text-transform:uppercase;letter-spacing:.06em}.ground-materials h3{margin:12px 0;font-size:1.5rem}.ground-materials p{font-size:.94rem;color:var(--muted);margin:0}.ground-check{background:var(--dark);color:white;max-width:none}.ground-check>div{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin:35px 0}.ground-check b{color:var(--lime)}.ground-check h3{margin:12px 0;font-size:1.5rem}.ground-check p{color:#d0d9cf}.ground-sources{padding-top:35px;padding-bottom:35px}.ground-sources a{text-decoration:underline}.ground-sources p,.ground-sources li{font-size:.9rem}.cross-section-preview{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:25px 0}.cross-section-preview a{display:block;border:1px solid var(--line);background:white;padding:14px}.cross-section-preview strong{display:block;margin:8px}.cross-section-preview img{width:100%;height:auto}.technical-note .ground-mini{width:100%;height:auto;margin:14px 0}.technical-note a{display:block}.ground-guide summary{cursor:pointer}@media(max-width:900px){.ground-sections{gap:18px}.section-card{padding:18px}.ground-materials{grid-template-columns:1fr 1fr}.ground-check>div{grid-template-columns:1fr 1fr}}@media(max-width:650px){.ground-guide section{padding:40px 20px}.ground-sections,.ground-water,.ground-materials,.ground-check>div{grid-template-columns:1fr}.ground-sections{padding-top:10px!important}.section-card{padding:16px}.ground-water{gap:15px}.ground-jump a{font-size:.85rem;padding:8px 12px}.cross-section-preview{grid-template-columns:1fr}.ground-guide h2{font-size:2rem}.ground-check>div{gap:18px}.ground-sources{overflow-wrap:anywhere}}
.ground-polymer{display:grid;grid-template-columns:1fr 1.2fr;gap:65px;border-top:1px solid var(--line)}.ground-polymer h2{font-size:clamp(2rem,3.3vw,3.4rem)}.ground-polymer h3{font-size:1.35rem;margin:28px 0 12px}.ground-polymer .polymer-promise{border-left:3px solid #8fa875;padding:15px 20px;margin:25px 0;background:#e9efdf;font-size:1.15rem}.ground-polymer details{margin:25px 0}.ground-polymer details p{font-size:.94rem;margin-top:15px;color:var(--muted)}.ground-polymer summary{cursor:pointer}.polymer-teaser{margin-top:24px;padding:20px;border-left:3px solid #8fa875;background:#e9efdf}.polymer-teaser p{margin:8px 0 0}@media(max-width:750px){.ground-polymer{grid-template-columns:1fr;gap:20px}}