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1.2rem;font-size:.9rem;color:var(--ink-soft)}.sources{font-size:.85rem;color:var(--ink-soft)}.sources li{margin-bottom:.4rem}.site-footer{background:var(--brand-dark);color:#ffffffd9;padding-block:1.6rem}.site-footer a{color:var(--brand-light)}.site-footer a:hover{color:#fff}.footer-disclaimer{margin:0;font-size:.88rem;line-height:1.55;color:#ffffffbf;max-width:68ch}.footer-credits{margin:.5rem 0 0;font-size:.82rem;line-height:1.5;color:#ffffff8c;max-width:68ch}.social-row{display:flex;gap:.6rem;margin-top:.6rem}.social-row a{width:38px;height:38px;border-radius:10px;background:#ffffff1a;display:grid;place-items:center;font-weight:700;font-size:.85rem;color:#fff}.social-row a:hover{background:var(--brand-light)}.tech-toggle-wrap{margin-top:1.4rem}.btn--tech{background:var(--brand);color:#fff;border:2px solid var(--brand)}.btn--tech:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}.btn--tech .chev{transition:transform .3s var(--ease);font-size:.9em}.btn--tech[aria-expanded=true] .chev{transform:rotate(180deg)}.tech-panel{display:none;margin-top:1.4rem;border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:var(--radius);background:var(--paper);padding:clamp(1.2rem,3vw,2rem);box-shadow:var(--shadow)}.tech-panel.open{display:block;animation:techIn .5s var(--ease)}@keyframes techIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}.tech-panel h3{color:var(--heading)}.tech-panel h4{color:var(--brand);margin-top:1.4rem}.tech-tag{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--brand);background:var(--bg-alt);padding:.25rem .7rem;border-radius:999px;margin-bottom:.6rem}.tech-panel ul{padding-left:1.1rem}.tech-panel li{margin-bottom:.4rem}.sci-note{font-size:.82rem;color:var(--ink-soft);border-top:1px dashed var(--line);padding-top:.9rem;margin-top:1.2rem}.data-table-wrap{overflow-x:auto;margin:1rem 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iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.video-embed__placeholder{aspect-ratio:16/9;border-radius:var(--radius);background:var(--bg-alt);border:1px dashed var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem;text-align:center;padding:1.5rem}.video-embed__placeholder span{font-size:3.2rem}.video-embed__placeholder p{max-width:40ch;margin:0;color:var(--ink-soft);font-size:.9rem}.video-embed figcaption{margin-top:.8rem}.video-embed figcaption strong{display:block;margin-bottom:.3rem}.video-embed figcaption p{font-size:.9rem;color:var(--ink-soft);margin:0}.qna-list,.faq-list{display:flex;flex-direction:column;gap:1.1rem}.qna-item,.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.1rem 1.3rem}.qna-item h3,.faq-item h3{font-size:1.02rem;margin:0 0 .4rem}.qna-item p,.faq-item p{margin:0;color:var(--ink-soft);font-size:.93rem}.door-card{display:flex;flex-direction:column}.door-card__links{list-style:none;margin:.8rem 0 0;padding:0;display:flex;flex-direction:column;gap:.4rem}.door-card__links a{font-size:.88rem}.in-body-disclaimer{font-weight:600;border-left-color:var(--accent-2)}.subpage-card{display:block;color:inherit}.subpage-card:hover{color:inherit}.subpage-card .card{height:100%;transition:transform .25s var(--ease),box-shadow .25s var(--ease)}.subpage-card:hover .card{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.ecosystem-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--gap)}.ecosystem-node{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;text-align:center}.ecosystem-node__icon{font-size:2.6rem;display:block;margin-bottom:.6rem}.ecosystem-node h4{margin:0 0 .5rem;color:var(--heading)}.ecosystem-node ul{list-style:none;margin:0;padding:0;font-size:.88rem;color:var(--ink-soft)}.ecosystem-node li{margin-bottom:.25rem}main.has-bottom-nav{padding-bottom:calc(110px + env(safe-area-inset-bottom,0px))}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:120;background:#ffffffeb;-webkit-backdrop-filter:saturate(160%) blur(14px);backdrop-filter:saturate(160%) blur(14px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px)}.bottom-nav__row{display:flex;align-items:center;justify-content:space-between;gap:clamp(.75rem,2vw,1.5rem);padding-block:clamp(.7rem,1.6vw,1.75rem)}.bottom-nav__btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:none;border:2px solid var(--line);border-radius:999px;color:var(--ink);font-family:var(--font-head);font-weight:600;font-size:clamp(.85rem,1.3vw,1.05rem);padding:clamp(.5rem,.9vw,.8rem) clamp(.85rem,1.6vw,1.3rem);cursor:pointer;transition:border-color .2s,transform .2s var(--ease);white-space:nowrap;flex-shrink:0;min-width:11em}.bottom-nav__btn:not(:disabled):hover{border-color:var(--brand);transform:translateY(-2px)}.bottom-nav__btn:disabled{opacity:.4;cursor:default}.bottom-nav__mid{display:flex;flex-direction:column;align-items:center;gap:.35rem;flex:1 1 auto;min-width:0;overflow-x:auto;padding-inline:.25rem;scrollbar-width:none}.bottom-nav__mid::-webkit-scrollbar{display:none}.bottom-nav__count{font-size:clamp(.74rem,1.2vw,1.15rem);color:var(--ink-soft);white-space:nowrap;font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis}.bottom-nav__dots{display:flex;align-items:flex-start;gap:clamp(.5rem,.9vw,1rem);padding-block:4px}.bottom-nav__dot{position:relative;border-radius:50%;background:var(--line);border:none;cursor:pointer;flex-shrink:0;width:clamp(14px,1.4vw,18px);height:clamp(14px,1.4vw,18px)}.bottom-nav__dot:before{content:"";position:absolute;top:-12px;right:-12px;bottom:-12px;left:-12px}.bottom-nav__dot.active{background:var(--brand)}.bottom-nav__dot--sub{margin-top:4px;margin-inline:clamp(-.3rem,-.6vw,-.15rem)}.theme-toggle{flex-shrink:0;border-radius:50%;border:2px solid var(--line);background:var(--paper);color:var(--ink);display:grid;place-items:center;cursor:pointer;padding:0;transition:border-color .2s,transform .2s var(--ease);width:clamp(38px,3vw,48px);height:clamp(38px,3vw,48px)}.theme-toggle:hover{border-color:var(--brand);transform:translateY(-2px)}.theme-toggle svg{width:55%;height:55%}@media (max-width: 560px){main.has-bottom-nav{padding-bottom:calc(96px + env(safe-area-inset-bottom,0px))}.bottom-nav__btn-label{display:none}.bottom-nav__btn{padding:.6rem .8rem;min-width:0}.bottom-nav__mid{max-width:54vw}.quiz-grid{grid-template-columns:1fr}}