:root { --ink:#0d1111; --green:#062e2d; --teal:#00cfc8; --gold:#ffc928; --paper:#f7f9f9; --muted:#aab8b7; --deck-width:1600px; --deck-height:900px; }
* { box-sizing:border-box; }
html,body { width:100%; height:100%; overflow:hidden; }
body.presentation-page { margin:0; color:var(--paper); font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif; background:var(--ink); }
.deck-canvas { position:absolute; top:50%; left:50%; width:var(--deck-width); height:var(--deck-height); overflow:hidden; transform:translate(-50%,-50%) scale(var(--deck-scale,1)); transform-origin:center; background:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px),radial-gradient(circle at 78% 20%,rgba(0,207,200,.085),transparent 34%),var(--ink); background-size:80px 80px,80px 80px,auto; }
.deck-slide { position:absolute; inset:0; display:none; overflow:hidden; }
.deck-slide.is-active { display:block; animation:editorial-slide-enter 260ms ease both; }
@keyframes editorial-slide-enter { from { opacity:0; transform:translateX(22px); } to { opacity:1; transform:translateX(0); } }
.slide-header { position:absolute; top:62px; left:110px; right:110px; z-index:4; }
.slide-title h2 { max-width:1260px; margin:0; font-size:52px; line-height:1.05; letter-spacing:-.045em; }
.slide-title p { max-width:1180px; margin:12px 0 0; color:var(--muted); font-size:20px; line-height:1.42; }
.diagram { position:absolute; top:235px; left:110px; width:1380px; min-height:470px; display:grid; grid-template-columns:repeat(3,1fr); gap:28px; align-items:center; }
.diagram--single { grid-template-columns:minmax(360px,760px); justify-content:center; }
.visual-node { min-height:230px; border:2px solid rgba(0,207,200,.48); border-radius:10px; background:rgba(13,25,25,.96); color:var(--paper); text-align:left; cursor:pointer; transition:border-color .16s ease,background .16s ease,transform .16s ease; }
.visual-node:hover,.visual-node:focus-visible { border-color:var(--teal); background:var(--green); transform:translateY(-3px); outline:0; }
.visual-node--gold { border-color:rgba(255,201,40,.72); }
.node-box { padding:26px; }
.node-circle { display:grid; place-content:center; padding:34px; border-radius:50%; text-align:center; }
.node-pill { display:flex; align-items:center; justify-content:center; padding:20px 30px; border-radius:999px; text-align:center; }
.visual-node__tag { display:block; margin-bottom:8px; color:var(--teal); font-size:13px; font-weight:900; letter-spacing:.11em; text-transform:uppercase; }
.visual-node--gold .visual-node__tag { color:var(--gold); }
.visual-node__title { display:block; font-size:26px; font-weight:850; line-height:1.15; letter-spacing:-.025em; }
.visual-node__text { display:block; margin-top:12px; color:var(--muted); font-size:16px; line-height:1.45; }
.cover__content { position:absolute; top:50%; left:120px; z-index:2; width:830px; transform:translateY(-52%); }
.cover__eyebrow { margin:0 0 24px; color:var(--teal); font-size:17px; font-weight:900; letter-spacing:.13em; text-transform:uppercase; }
.cover h1 { margin:0; font-size:82px; line-height:.98; letter-spacing:-.065em; text-wrap:balance; }
.cover h1 span { color:var(--teal); }
.cover__lead { max-width:700px; margin:38px 0 0; color:#b9c3c2; font-size:24px; line-height:1.46; font-style:italic; }
.cover__rule { width:130px; height:6px; margin-top:42px; border:0; border-radius:5px; background:linear-gradient(90deg,var(--gold),var(--teal)); }
.cover__visual { position:absolute; top:182px; right:105px; width:495px; height:495px; filter:drop-shadow(0 24px 52px rgba(0,0,0,.28)); }
.cover__visual svg { width:100%; height:100%; overflow:visible; }
.edge-nav svg { width:34px; height:34px; }
.edge-nav path { fill:none; stroke:currentColor; stroke-width:2.1; stroke-linecap:round; stroke-linejoin:round; }
.edge-nav:disabled { visibility:hidden; }
.explore-card { display:block; min-height:145px; padding:22px; border:1px solid rgba(0,207,200,.35); border-radius:10px; color:var(--paper); background:rgba(13,25,25,.96); text-decoration:none; }
.explore-card:hover,.explore-card:focus-visible { border-color:var(--teal); background:var(--green); outline:0; }
.explore-card small { display:block; color:var(--teal); font-weight:850; letter-spacing:.08em; text-transform:uppercase; }
.explore-card strong { display:block; margin-top:8px; font-size:22px; }
.explore-card span { display:block; margin-top:8px; color:var(--muted); font-size:14px; line-height:1.35; }
@media (prefers-reduced-motion:reduce) { .deck-slide.is-active { animation:none!important; } }
@media (max-width:900px) {
  .deck-canvas { position:relative; top:auto; left:auto; width:100%; height:100%; transform:none!important; background-size:48px 48px,48px 48px,auto; }
  .deck-slide.is-active:not(.cover) { padding:22px 40px 84px; overflow-y:auto; }
  .slide-header { position:relative; top:auto; left:auto; right:auto; }
  .slide-title h2 { font-size:clamp(28px,7vw,40px); }
  .slide-title p { font-size:15px; }
  .diagram { position:relative; top:auto; left:auto; width:100%; min-height:0; margin-top:20px; grid-template-columns:repeat(auto-fit,minmax(min(245px,100%),1fr)); gap:12px; }
  .diagram--single { grid-template-columns:1fr; }
  .visual-node,.node-box,.node-circle,.node-pill { min-height:135px; padding:18px; border-radius:14px; text-align:left; }
  .visual-node__title { font-size:20px; }
  .visual-node__text { font-size:13px; }
  .cover.is-active { display:grid; grid-template-rows:repeat(3,minmax(0,1fr)); padding:0 40px 48px 18px; }
  .cover__visual { position:relative; top:auto; right:auto; grid-row:1; align-self:center; justify-self:center; width:min(66vw,250px); height:min(66vw,250px); }
  .cover__content { position:relative; top:auto; left:auto; grid-row:2/4; width:100%; padding:12px 8px 36px; transform:none; }
  .cover h1 { font-size:clamp(40px,12vw,62px); }
  .cover__lead { margin-top:20px; font-size:clamp(14px,4vw,18px); }
  .edge-nav { width:30px; height:44px; }
  .edge-nav--back { left:2px; }
  .edge-nav--next { right:2px; }
}