.science-header[data-astro-cid-ikooipj4]{padding:var(--pl-section-y) var(--pl-gutter) var(--pl-section-y-sm);border-bottom:1px solid var(--pl-rule)}.science-header__inner[data-astro-cid-ikooipj4]{max-width:var(--pl-max);flex-direction:column;gap:24px;margin:0 auto;display:flex}.science-header__eyebrow[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-label);letter-spacing:var(--pl-tracking-eyebrow);text-transform:uppercase;color:var(--pl-stone)}.science-header__h1[data-astro-cid-ikooipj4]{font-family:var(--pl-font-display);font-weight:var(--pl-weight-display);font-size:var(--pl-text-page);line-height:var(--pl-leading-display);letter-spacing:var(--pl-tracking-display);max-width:15ch}.science-header__sub[data-astro-cid-ikooipj4]{font-size:var(--pl-text-lead);line-height:var(--pl-leading-body);color:var(--pl-ink-70);max-width:56ch}.science-body[data-astro-cid-ikooipj4]{padding:var(--pl-section-y-sm) var(--pl-gutter) clamp(64px, 9vw, 140px)}.science-body__inner[data-astro-cid-ikooipj4]{max-width:var(--pl-max);flex-direction:column;gap:clamp(48px,7vw,120px);margin:0 auto;display:flex}.science-part[data-astro-cid-ikooipj4]{flex-direction:column;gap:26px;display:flex}.science-part__grid[data-astro-cid-ikooipj4]{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-items:start;gap:clamp(28px,4vw,72px);display:grid}.science-part__text[data-astro-cid-ikooipj4]{flex-direction:column;gap:22px;min-width:0;display:flex}.science-part__eyebrow[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-label);letter-spacing:var(--pl-tracking-eyebrow);text-transform:uppercase;color:var(--pl-rust-text)}.science-part__h2[data-astro-cid-ikooipj4]{font-family:var(--pl-font-display);font-weight:var(--pl-weight-display);font-size:var(--pl-text-sub);line-height:var(--pl-leading-heading);letter-spacing:var(--pl-tracking-heading);max-width:18ch}.science-part__prose[data-astro-cid-ikooipj4]{font-size:var(--pl-text-body);line-height:var(--pl-leading-body);color:var(--pl-ink-80);flex-direction:column;gap:16px;max-width:60ch;display:flex}.science-part__prose[data-astro-cid-ikooipj4] strong[data-astro-cid-ikooipj4]{font-weight:var(--pl-weight-medium);color:var(--pl-ink)}.science-part__intro[data-astro-cid-ikooipj4]{font-size:var(--pl-text-ui);line-height:var(--pl-leading-body);color:var(--pl-ink-70)}.science-diagram[data-astro-cid-ikooipj4]{flex-direction:column;gap:12px;min-width:0;display:flex}.science-diagram__pair[data-astro-cid-ikooipj4]{grid-template-columns:1fr 1fr;gap:12px;display:grid}.science-diagram__col[data-astro-cid-ikooipj4]{flex-direction:column;gap:10px;display:flex}.science-diagram__fig-label[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-label);letter-spacing:var(--pl-tracking-label);text-transform:uppercase;color:var(--pl-stone)}.science-diagram__box[data-astro-cid-ikooipj4]{aspect-ratio:3/4;background:var(--pl-placeholder);border:1px solid var(--pl-rule-strong);position:relative;overflow:hidden}.science-diagram__film[data-astro-cid-ikooipj4]{background:var(--pl-rust);height:9px;position:absolute;top:0;left:0;right:0}.science-diagram__grains[data-astro-cid-ikooipj4]{background-image:radial-gradient(circle at 6px 6px,#3e3a3247 2.4px,#0000 2.6px);background-size:16px 16px;position:absolute;inset:0}.science-diagram__zone-sealer[data-astro-cid-ikooipj4]{background:#3e3a3229;border-bottom:1px dashed #3e3a3266;height:34px;position:absolute;top:14px;left:10px;right:10px}.science-diagram__penetration[data-astro-cid-ikooipj4]{background:#9a6a4438;height:62px;position:absolute;top:0;left:0;right:0}.science-diagram__pen-line[data-astro-cid-ikooipj4]{background:#9a6a448c;height:1px;position:absolute;top:62px;left:0;right:0}.science-diagram__annotation[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-label);letter-spacing:.1em;text-transform:uppercase;color:var(--pl-ink-70);position:absolute;top:56px;left:10px}.science-diagram__annotation--lower[data-astro-cid-ikooipj4]{top:68px}.science-diagram__caption[data-astro-cid-ikooipj4]{font-size:var(--pl-text-ui);line-height:var(--pl-leading-ui);color:var(--pl-ink-70)}.science-diagram__figcaption[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-label);letter-spacing:.1em;text-transform:uppercase;color:var(--pl-stone);line-height:var(--pl-leading-body);grid-column:span 2}.science-diagram__box--open[data-astro-cid-ikooipj4],.science-diagram__box--sealed[data-astro-cid-ikooipj4]{flex-direction:column;justify-content:space-around;padding:14px 10px;display:flex}.science-diagram__arrows[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-ui);color:var(--pl-ink)}.science-diagram__arrows--blocked[data-astro-cid-ikooipj4]{color:var(--pl-stone);padding-top:26px}.science-diagram__salt-zone[data-astro-cid-ikooipj4]{background:repeating-linear-gradient(90deg,#3e3a324d 0 3px,#0000 3px 8px);height:26px;position:absolute;top:9px;left:0;right:0}.td-mono[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-ui);color:var(--pl-ink-70)}.science-dark[data-astro-cid-ikooipj4]{background:var(--pl-ink);color:var(--pl-paper);padding:var(--pl-section-y-sm);flex-direction:column;gap:28px;display:flex}.science-dark__eyebrow[data-astro-cid-ikooipj4]{font-family:var(--pl-font-body);font-size:var(--pl-text-label);letter-spacing:var(--pl-tracking-eyebrow);text-transform:uppercase;color:var(--pl-beige)}.science-dark__h2[data-astro-cid-ikooipj4]{font-family:var(--pl-font-display);font-weight:var(--pl-weight-display);font-size:var(--pl-text-sub);line-height:var(--pl-leading-heading);letter-spacing:var(--pl-tracking-heading)}.science-dark__actions[data-astro-cid-ikooipj4]{flex-wrap:wrap;gap:12px;display:flex}.limits-card[data-astro-cid-ikooipj4]{flex-direction:column;gap:12px;padding:26px;display:flex}.limits-card__title[data-astro-cid-ikooipj4]{font-family:var(--pl-font-display);font-weight:var(--pl-weight-medium);font-size:var(--pl-text-lead);letter-spacing:-.02em}.limits-card__body[data-astro-cid-ikooipj4]{font-size:var(--pl-text-ui);line-height:var(--pl-leading-body);color:#f3f0eac2}.btn[data-astro-cid-ikooipj4]{border-radius:var(--pl-radius-pill);font-size:var(--pl-text-ui);cursor:pointer;transition:background var(--pl-dur-base), color var(--pl-dur-base), border-color var(--pl-dur-base);align-items:center;padding:16px 28px;text-decoration:none;display:inline-flex}.btn--outline[data-astro-cid-ikooipj4]{color:var(--pl-ink);border:1px solid var(--pl-rule-strong);background:0 0;align-self:flex-start}.btn--outline[data-astro-cid-ikooipj4]:hover{border-color:var(--pl-ink);color:var(--pl-ink)}.btn--on-dark-primary[data-astro-cid-ikooipj4]{background:var(--pl-paper);color:var(--pl-ink);border:none}.btn--on-dark-primary[data-astro-cid-ikooipj4]:hover{background:var(--pl-rust);color:var(--pl-paper)}.btn--on-dark-outline[data-astro-cid-ikooipj4]{color:var(--pl-paper);background:0 0;border:1px solid #f3f0ea66}.btn--on-dark-outline[data-astro-cid-ikooipj4]:hover{border-color:var(--pl-paper);background:#f3f0ea14}