.dna-nav{height:250px;background:var(--bg-page)}.dna-nav-inner{height:100%;display:flex;align-items:center;justify-content:center;gap:4rem}.dna-nav-card{display:flex;align-items:center;gap:1.25rem;text-decoration:none}.dna-nav-icon{height:64px;width:auto;flex-shrink:0;transition:transform 0.3s ease}.dna-nav-text{display:flex;flex-direction:column;gap:0.125rem}.dna-nav-brand{font-family:var(--font-heading);font-size:1.125rem;font-weight:800;letter-spacing:0.06em;color:var(--text-main)}.dna-nav-key{font-family:var(--font-heading);font-size:1rem;font-weight:700;color:var(--brand-primary)}.dna-nav-card:hover .dna-nav-icon{transform:scale(1.06)}.dna-nav-card:hover .dna-nav-key{color:var(--brand-primary)}.chronology{padding:5rem 0;background:var(--bg-page)}.chronology-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:var(--brand-secondary);text-transform:uppercase;margin-bottom:1.25rem}.chronology-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(2rem,4vw,3rem);color:var(--brand-primary);line-height:1.15;text-transform:uppercase;margin-bottom:3.75rem}.chronology-list{list-style:none;position:relative;max-width:62rem;margin:0 auto}.chronology-list::before{content:"";position:absolute;top:0.25rem;bottom:0.25rem;left:50%;width:2px;transform:translateX(-50%);background:var(--brand-secondary);opacity:0.45}.chronology-item{position:relative;display:grid;grid-template-columns:1fr 1fr;column-gap:3.75rem;padding-bottom:3rem}.chronology-item:last-child{padding-bottom:0}.chronology-marker{position:absolute;left:50%;top:0.3rem;width:14px;height:14px;transform:translateX(-50%);border-radius:50%;background:var(--bg-page);border:3px solid var(--brand-secondary);z-index:1}.chronology-item.is-flooded .chronology-marker{background:var(--brand-primary);border-color:var(--brand-primary)}.chronology-date{grid-column:1;text-align:right}.chronology-era{display:block;font-family:var(--font-heading);font-weight:800;font-size:1.125rem;color:var(--brand-primary);margin-bottom:0.25rem}.chronology-event{font-family:var(--font-heading);font-weight:700;font-size:0.8125rem;letter-spacing:0.08em;color:var(--text-muted);text-transform:uppercase}.chronology-body{grid-column:2}.chronology-body p{font-size:0.9375rem;color:var(--text-main);line-height:1.7;max-width:26rem}@media (max-width:768px){.chronology-list::before{left:6px;transform:none}.chronology-item{grid-template-columns:1fr;row-gap:0.375rem;padding-left:2.25rem;padding-bottom:2rem}.chronology-marker{left:0;transform:none}.chronology-date,.chronology-body{grid-column:1;text-align:left}}.researchers{padding:5rem 0;background:var(--bg-inverse);color:var(--text-inverse)}.researchers-header{display:grid;grid-template-columns:1fr 1fr;gap:3.75rem;align-items:start;margin-bottom:3.75rem}.researchers-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:var(--brand-light);text-transform:uppercase;margin-bottom:1.25rem}.researchers-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(1.75rem,3.5vw,2.625rem);color:var(--text-inverse);text-transform:uppercase;line-height:1.15}.researchers-desc{font-size:0.9375rem;line-height:1.8;color:var(--text-inverse);margin-bottom:1.5rem;padding-top:0.625rem}.researchers .carousel-counter{color:var(--text-inverse)}.researchers .carousel-btn{color:var(--text-inverse)}.dna-archive{padding:5rem 0;background:var(--bg-page)}.dna-archive-header{display:grid;grid-template-columns:1fr 1fr;gap:3.75rem;align-items:start;margin-bottom:3rem}.dna-archive-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:var(--brand-secondary);text-transform:uppercase;margin-bottom:1.25rem}.dna-archive-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(1.75rem,3.5vw,2.625rem);color:var(--brand-primary);text-transform:uppercase;line-height:1.15}.dna-archive-desc{font-size:0.9375rem;color:var(--text-main);line-height:1.8;padding-top:0.625rem}.dna-archive-gallery{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;align-items:stretch;margin-bottom:2.5rem}.archive-card{position:relative;margin:0;border-radius:0 0 0 60px;overflow:hidden;background:var(--bg-surface)}.archive-card-col{display:grid;grid-template-rows:1fr 1fr;gap:1.5rem}.archive-card-col .archive-card{min-height:15rem}.archive-card--tall{min-height:31.5rem}.archive-card-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.archive-card-caption{position:absolute;left:0;right:0;bottom:0;display:flex;flex-direction:column;gap:0.25rem;padding:3rem 1.5rem 1.25rem;background:linear-gradient(to top,rgba(0,30,50,0.85),rgba(0,30,50,0));color:var(--text-inverse)}.archive-card-title{font-family:var(--font-heading);font-weight:800;font-size:0.9375rem;letter-spacing:0.06em;text-transform:uppercase}.archive-card-meta{font-size:0.8125rem;opacity:0.85}.dna-archive-links{display:flex;flex-wrap:wrap;align-items:center;gap:1.5rem}.dna-archive-links-label{font-weight:600;font-size:0.9375rem;color:var(--text-muted)}.dna-archive-links a{color:var(--brand-primary);font-weight:600;text-decoration:none;border-bottom:2px solid transparent;transition:border-color 0.2s ease}.dna-archive-links a:hover,.dna-archive-links a:focus-visible{border-bottom-color:var(--brand-secondary)}@media (max-width:768px){.archive-card--tall{min-height:22rem}.archive-card-col .archive-card{min-height:14rem}}.bibliography{padding:5rem 0;background:var(--bg-bibliography)}.bibliography-header{display:grid;grid-template-columns:1fr 1fr;gap:3.75rem;align-items:start;margin-bottom:3rem}.bibliography-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:var(--brand-secondary);text-transform:uppercase;margin-bottom:1.25rem}.bibliography-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(1.75rem,3.5vw,2.625rem);color:var(--brand-primary);text-transform:uppercase;line-height:1.15}.bibliography-desc{font-size:0.9375rem;color:var(--text-main);line-height:1.8;padding-top:0.625rem}.geo-intro,.word-memory{background:var(--brand-secondary);color:var(--text-inverse);padding:4.5rem 0}.geo-intro-label,.word-memory-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:rgba(255,255,255,0.65);text-transform:uppercase;margin-bottom:1.25rem}.geo-intro-grid,.word-memory-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.75rem;align-items:start}.geo-intro-title,.word-memory-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(1.75rem,3.5vw,2.625rem);color:var(--text-inverse);text-transform:uppercase;line-height:1.15}.geo-intro-text p,.word-memory-text p{font-size:0.9375rem;color:var(--text-inverse);line-height:1.8;padding-top:0.625rem;margin-bottom:1.25rem}.geo-intro-text p:last-child,.word-memory-text p:last-child{margin-bottom:0}.rapids-map{background:var(--bg-page);padding:5rem 0}.rapids-map-header{display:grid;grid-template-columns:1fr 1fr;gap:3.75rem;align-items:start;margin-bottom:3rem}.rapids-map-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:var(--brand-secondary);text-transform:uppercase;margin-bottom:1.25rem}.rapids-map-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(1.75rem,3.5vw,2.625rem);color:var(--brand-primary);text-transform:uppercase;line-height:1.15}.rapids-map-desc{font-size:0.9375rem;color:var(--brand-secondary);line-height:1.8;padding-top:0.625rem}.rapids-map-stage{position:relative;display:grid;grid-template-columns:1fr minmax(300px,440px) 1fr;gap:2rem;align-items:stretch}.rapids-map-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;justify-content:space-between;gap:1rem}.rapids-map-list--right{align-items:flex-end}.rapids-map-item{display:block;background:none;border:0;border-bottom:2px solid transparent;padding:0.5rem 0;cursor:pointer;min-height:var(--touch-target);font-family:var(--font-heading);font-weight:800;font-size:0.9375rem;letter-spacing:0.06em;text-transform:uppercase;text-align:left;color:var(--brand-primary);transition:color 0.2s ease,border-color 0.2s ease}.rapids-map-list--right .rapids-map-item{text-align:right}.rapids-map-item:hover{color:var(--brand-secondary)}.rapids-map-item.is-active{border-bottom-color:var(--brand-primary)}.rapids-map-item:focus-visible{outline:2px solid var(--brand-secondary);outline-offset:2px}.rapids-map-svg{display:block;width:100%;height:auto}.rapids-map-marker circle{fill:var(--bg-page);stroke:var(--brand-primary);stroke-width:2;transition:fill 0.2s ease}.rapids-map-marker text{font-family:var(--font-heading);font-weight:800;font-size:12px;text-anchor:middle;fill:var(--brand-primary);transition:fill 0.2s ease}.rapids-map-marker.is-active circle{fill:var(--brand-primary)}.rapids-map-marker.is-active text{fill:var(--text-inverse)}.rapid-card{position:absolute;top:0;left:0;z-index:5;width:min(420px,100%);background:var(--bg-page);border:1px solid var(--border-light);border-radius:0 0 0 60px;box-shadow:0 16px 40px rgba(0,0,0,0.14);padding:1.25rem;overflow:hidden;animation:rapid-card-in 0.25s ease}@keyframes rapid-card-in{from{opacity:0;transform:translateY(8px)}}.rapid-card-title{font-family:var(--font-heading);font-weight:800;font-size:0.9375rem;letter-spacing:0.05em;text-transform:uppercase;color:var(--brand-primary);margin-bottom:0.75rem}.rapid-card-num{color:var(--brand-secondary);margin-right:0.375rem}.rapid-card-body{display:flex;gap:1rem}.rapid-card-img{display:block;width:150px;align-self:stretch;object-fit:cover;border-radius:0 0 0 40px;filter:grayscale(100%)}.rapid-card-info{flex:1 1 auto;min-width:0}.rapid-card-coords{font-size:0.75rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--brand-secondary);margin-bottom:0.5rem}.rapid-card-text{font-size:0.8125rem;color:var(--text-muted);line-height:1.6;margin-bottom:0.75rem}.rapid-card-footer{display:flex;justify-content:flex-end}.rapid-card-link{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:2px solid var(--brand-primary);border-radius:50%;color:var(--brand-primary);transition:background-color 0.2s ease,color 0.2s ease}.rapid-card:hover .rapid-card-link{background:var(--brand-primary);color:var(--text-inverse)}.rapid-card-close{position:absolute;top:0.75rem;right:0.75rem;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:none;border:0;padding:0;cursor:pointer;color:var(--text-muted);transition:color 0.2s ease}.rapid-card-close:hover{color:var(--brand-primary)}.rapid-card-close:focus-visible{outline:2px solid var(--brand-secondary);outline-offset:2px}.lit-archive{background:var(--bg-bibliography);padding:5rem 0}.lit-archive-header{display:grid;grid-template-columns:1fr 1fr;gap:3.75rem;align-items:start;margin-bottom:3rem}.lit-archive-label{font-family:var(--font-heading);font-weight:700;font-size:0.75rem;letter-spacing:0.15em;color:var(--brand-secondary);text-transform:uppercase;margin-bottom:1.25rem}.lit-archive-title{font-family:var(--font-heading);font-weight:900;font-size:clamp(1.75rem,3.5vw,2.625rem);color:var(--brand-primary);text-transform:uppercase;line-height:1.15}.lit-archive-desc{font-size:0.9375rem;color:var(--text-main);line-height:1.8;padding-top:0.625rem}.lit-archive-footer{display:flex;flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:1rem;padding-top:1.5rem}.lit-archive-filter-label{font-size:0.9375rem;color:var(--text-main)}.lit-archive-filters{display:flex;flex-wrap:wrap;align-items:center;gap:0.25rem 1.25rem}.lit-filter{background:none;border:0;padding:0.25rem 0;cursor:pointer;min-height:var(--touch-target);font-family:var(--font-heading);font-weight:700;font-size:0.875rem;color:var(--brand-primary);text-decoration:underline;text-underline-offset:3px;transition:color 0.2s ease}.lit-filter:hover{color:var(--brand-secondary)}.lit-filter.is-active{color:var(--brand-secondary);text-decoration-thickness:2px}.lit-filter:focus-visible{outline:2px solid var(--brand-secondary);outline-offset:2px}@media (max-width:1024px){.dna-nav-inner{gap:2.5rem}.dna-nav-icon{height:52px}}@media (max-width:768px){.dna-nav{height:auto}.dna-nav-inner{flex-direction:column;align-items:flex-start;gap:1.5rem;padding-top:2rem;padding-bottom:2rem}}@media (max-width:900px){.geo-intro-grid,.word-memory-grid,.rapids-map-header,.lit-archive-header{grid-template-columns:1fr;gap:1.5rem}.rapids-map-stage{grid-template-columns:1fr}.rapids-map-list{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;gap:0.5rem 1.5rem}.rapids-map-list--right{align-items:flex-start}.rapids-map-list--right .rapids-map-item{text-align:left}.rapid-card{position:static;width:100%;margin-top:1.5rem}}@media (max-width:480px){.geo-intro,.word-memory{padding:3.5rem 0}.rapids-map,.lit-archive{padding:3.5rem 0}.rapid-card-img{width:110px}}