.lab-hero{padding:4rem 0 6rem}.lab-title{max-width:none;font-size:clamp(3rem,8vw,8.4rem);text-align:center}.lab-title span{display:inline-block}.lab-title .slash{padding:0 .12em;color:var(--accent)}.lab-lead{max-width:760px;margin:2rem auto 0;color:var(--muted);text-align:center;font-size:clamp(1.05rem,1.8vw,1.35rem)}.lab-actions{justify-content:center}.lab-intro{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:3rem}.lab-panel{min-height:290px;padding:clamp(1.4rem,3vw,2.5rem);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.lab-panel.water{border-top:3px solid var(--water)}.lab-panel.uv{border-top:3px solid var(--uv)}.lab-panel .panel-tag{color:var(--muted);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}.lab-panel h2{margin:3.8rem 0 1rem;font-size:clamp(2rem,4vw,3.7rem)}.lab-panel p{color:var(--muted)}.selector{padding:clamp(1rem,3vw,2rem);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}.selector-tabs{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.4rem}.selector-tab{padding:.75rem 1rem;border:1px solid var(--line);border-radius:999px;background:transparent;cursor:pointer}.selector-tab[aria-selected=true]{color:var(--ink);border-color:var(--accent);background:var(--accent)}.selector-result{display:grid;grid-template-columns:180px 1fr 1fr;gap:1px;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:var(--line)}.result-cell{min-height:185px;padding:1.25rem;background:var(--surface)}.result-cell .label{display:block;margin-bottom:2rem;color:var(--muted);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}.result-cell strong{display:block;margin-bottom:.65rem;font-size:1.15rem;font-weight:500}.result-cell p{margin:0;color:var(--muted);font-size:.86rem}.material-card{display:flex;flex-direction:column;justify-content:space-between;background:var(--paper);color:var(--ink)}.material-swatch{width:46px;height:46px;border-radius:8px;background:#f5f1e8;box-shadow:inset 0 0 0 1px #0000002e}.material-swatch.kraft{background:#8f6742}.material-swatch.coated{background:linear-gradient(135deg,#f7f7f2,#c8c8c2)}.matrix-wrap{overflow-x:auto;border:1px solid var(--line-dark);border-radius:var(--radius);background:var(--paper-strong)}.matrix{min-width:860px;color:#292722;font-size:.86rem}.matrix th{color:var(--muted-dark);border-bottom:1px solid var(--line-dark)}.matrix td{border-bottom:1px solid var(--line-dark)}.matrix tr:last-child td{border:0}.matrix td:first-child{font-weight:700}.dual-notes{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2rem}.note-card{padding:1.5rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}.note-card h3{margin-bottom:1rem}.note-card p{color:var(--muted)}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;counter-reset:method}.method-card{counter-increment:method;min-height:230px;padding:1.4rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}.method-card:before{content:"0" counter(method);display:block;margin-bottom:3.5rem;color:var(--accent);font-size:.75rem;font-weight:700}.method-card h3{margin-bottom:.7rem}.method-card p{margin:0;color:var(--muted);font-size:.86rem}.model-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.model-column{padding:clamp(1.4rem,3vw,2.5rem);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.model-column h3{margin-bottom:1.5rem}.model-list{display:grid;gap:0}.model-row{display:grid;grid-template-columns:1fr auto;gap:1rem;padding:1rem 0;border-top:1px solid var(--line)}.model-row span{color:var(--muted);font-size:.82rem}.model-column.water{border-left:3px solid var(--water)}.model-column.uv{border-left:3px solid var(--uv)}