html,body{height:100%;overflow:hidden}
body.deck{background:var(--bg);font-size:16px}
.viewport{position:fixed;inset:0;display:grid;place-items:center;overflow:hidden;
  background:radial-gradient(1200px 700px at 10% -10%,color-mix(in srgb,var(--coding) 12%,transparent),transparent 60%),
             radial-gradient(1000px 600px at 110% 110%,color-mix(in srgb,var(--agent) 10%,transparent),transparent 60%),var(--bg)}
.stage{position:absolute;left:50%;top:50%;width:1600px;height:900px;transform-origin:center center;transform:translate(-50%,-50%)}
.slide{position:absolute;inset:0;padding:72px 96px 76px;display:flex;flex-direction:column;opacity:0;visibility:hidden;transform:translateX(36px) scale(.985);
  transition:opacity .45s cubic-bezier(.2,.7,.2,1),transform .55s cubic-bezier(.2,.7,.2,1),visibility 0s linear .55s;
  border-radius:28px;background:color-mix(in srgb,var(--surface) 72%,transparent);border:1px solid var(--border);box-shadow:0 40px 120px -40px rgba(0,0,0,.35);overflow:hidden}
.slide.before{transform:translateX(-36px) scale(.985)}
.slide.on{opacity:1;visibility:visible;transform:none;transition:opacity .45s cubic-bezier(.2,.7,.2,1),transform .55s cubic-bezier(.2,.7,.2,1),visibility 0s}
.slide::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,var(--l),transparent 70%);opacity:.9}
.kicker{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.kicker .k{font:600 17px var(--mono);letter-spacing:.02em;color:var(--l)}
.kicker .chip{font-size:14px;padding:7px 12px}
.slide h2{font-size:58px;line-height:1.12;letter-spacing:-.035em;font-weight:740;margin:0 0 26px;max-width:1300px}
.slide h2 code,.slide p code,.slide li code,.note code{font-size:.86em;background:var(--code-bg);color:var(--code-text);padding:.08em .34em;border-radius:7px}
.sub{font-size:30px;line-height:1.5;color:var(--text-2);margin:0;max-width:700px}
.note{font-size:23px;line-height:1.5;color:var(--text-2);margin:18px 0 0;max-width:1380px}
.dia{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:20px;background:var(--surface);padding:22px 26px;cursor:zoom-in;position:relative}
.dia .mmd{width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.dia .mmd svg{width:100%!important;height:100%!important;max-width:100%!important;max-height:100%}
.dia::after{content:"⤢";position:absolute;right:14px;top:10px;font-size:20px;color:var(--text-3);opacity:.6}
.foot{position:absolute;left:96px;right:96px;bottom:26px;display:flex;justify-content:space-between;font:500 15px var(--mono);color:var(--text-3)}
/* title */
.k-title{justify-content:center;background:radial-gradient(900px 500px at 80% 20%,color-mix(in srgb,var(--coding) 22%,transparent),transparent 70%),color-mix(in srgb,var(--surface) 72%,transparent)}
.title-wrap{position:relative;z-index:2}
.k-title h1{font-size:150px;line-height:1;letter-spacing:-.055em;font-weight:780;margin:34px 0 18px;background:linear-gradient(100deg,var(--text) 10%,var(--coding) 55%,var(--agent) 80%,var(--ai));-webkit-background-clip:text;background-clip:text;color:transparent;padding-bottom:10px}
.title-sub{font-size:40px;color:var(--text-2);margin:0 0 44px;letter-spacing:-.015em}
.title-layers{display:flex;gap:12px;flex-wrap:wrap}
.title-layers .chip{font-size:17px;padding:9px 15px}
.k-title .hint{position:absolute;bottom:-150px;font-size:18px;color:var(--text-3)}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:19px;color:var(--text-2);padding:7px 16px 7px 8px;border:1px solid var(--border);border-radius:999px}
.eyebrow b{font:600 16px var(--mono);color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:999px}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;z-index:1}
.o1{width:420px;height:420px;right:120px;top:120px;background:color-mix(in srgb,var(--coding) 45%,transparent)}
.o2{width:300px;height:300px;right:360px;bottom:60px;background:color-mix(in srgb,var(--agent) 40%,transparent)}
.o3{width:240px;height:240px;right:40px;bottom:180px;background:color-mix(in srgb,var(--ai) 40%,transparent)}
/* stack */
.two{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;flex:1}
.k-stack h2{font-size:64px}
.tiers{display:grid;gap:6px}
.tier{display:flex;justify-content:space-between;align-items:center;padding:24px 28px;border-radius:18px;background:var(--l-bg);color:var(--l-fg);border:1px solid color-mix(in srgb,var(--l) 45%,transparent)}
.tier b{font-size:30px;letter-spacing:-.02em}
.tier span{font:500 18px var(--mono);opacity:.85;text-align:right;max-width:60%}
.arrow{text-align:center;color:var(--text-3);font-size:22px;line-height:1}
/* numbers */
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;flex:1;align-content:center}
.num{padding:30px 30px 26px;border-radius:22px;border:1px solid var(--border);background:var(--surface);position:relative;overflow:hidden}
.num::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--l)}
.num .n{font-size:84px;font-weight:760;letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums}
.num .l{font-size:24px;color:var(--text-2);margin-top:12px}
/* side */
.sidegrid{display:grid;grid-template-columns:480px 1fr;gap:56px;flex:1;min-height:0}
.sidetext{display:flex;flex-direction:column;justify-content:center}
.sidetext h2{font-size:48px}
.pts{list-style:none;margin:0;padding:0;display:grid;gap:18px}
.pts li{position:relative;padding-left:32px;font-size:25px;line-height:1.45;color:var(--text-2)}
.pts li::before{content:"";position:absolute;left:4px;top:.55em;width:11px;height:11px;border-radius:3px;background:var(--l);transform:rotate(45deg)}
.bigs{display:grid;gap:18px}
.big{padding:20px 24px;border-radius:18px;background:var(--l-bg);border:1px solid color-mix(in srgb,var(--l) 35%,transparent)}
.big .n{font:700 54px var(--mono);letter-spacing:-.04em;color:var(--l-fg);line-height:1.05}
:root[data-theme=dark] .big .n{color:var(--l)}
.big .l{font-size:21px;color:var(--text-2);margin-top:6px}
/* compare */
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;flex:1;align-content:center}
.col{border:1px solid var(--border);background:var(--surface);border-radius:22px;padding:34px 32px;display:flex;flex-direction:column}
.col .ct{font-size:36px;font-weight:720;letter-spacing:-.025em;margin-bottom:16px;color:var(--l-fg)}
:root[data-theme=dark] .col .ct{color:var(--l)}
.col p{font-size:24px;line-height:1.55;color:var(--text-2);margin:0 0 22px;flex:1}
.col .api{font:500 17px var(--mono);color:var(--text-3);border-top:1px solid var(--border);padding-top:16px}
.col .api code{font-size:16px}
/* events + api */
.evgrid{display:grid;grid-template-columns:1fr 80px 1fr;align-items:stretch;flex:1;min-height:0}
.evcol,.apibox{border:1px solid color-mix(in srgb,var(--l) 35%,var(--border));background:var(--l-bg);border-radius:22px;padding:28px 30px}
.apibox{background:var(--surface);border-color:var(--border)}
.evh{font:600 17px var(--mono);color:var(--text-3);margin-bottom:18px;letter-spacing:.01em}
.evs{display:flex;flex-wrap:wrap;gap:10px}
.evs code{font-size:20px;padding:8px 13px;border-radius:10px;background:var(--surface);border:1px solid color-mix(in srgb,var(--l,var(--border)) 40%,var(--border));color:var(--text)}
.evmid{display:grid;place-items:center;font-size:44px;color:var(--text-3)}
.apigrid{display:grid;grid-template-columns:1fr 1fr;gap:26px;flex:1;min-height:0}
.apibox .evs code{border-color:color-mix(in srgb,var(--ext) 45%,var(--border))}
.mut{display:grid;gap:12px}
.mut div{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:13px 18px;border-radius:13px;background:var(--ext-bg);border:1px solid color-mix(in srgb,var(--ext) 30%,transparent)}
.mut code{font-size:20px;color:var(--ext-fg)}
:root[data-theme=dark] .mut code{color:var(--ext)}
.mut span{font-size:20px;color:var(--text-2)}
/* bars */
.bars-grid{grid-template-columns:460px 1fr}
.bars{display:grid;gap:9px;align-content:center}
.bar{display:grid;grid-template-columns:150px 1fr 110px;gap:18px;align-items:center}
.bar .nm{font:500 18px var(--mono);color:var(--text-2);text-align:right}
.bar .tr{height:30px;border-radius:8px;background:var(--bg-2);overflow:hidden;display:flex}
.bar .s{height:100%;background:var(--l)}
.bar .t{height:100%;background:color-mix(in srgb,var(--l) 35%,transparent)}
.bar .v{font:500 18px var(--mono);color:var(--text-2)}
/* close */
.closing{display:grid;grid-template-columns:1fr 1fr;gap:18px 30px;flex:1;align-content:center}
.ci{display:flex;gap:20px;padding:22px 26px;border-radius:20px;border:1px solid var(--border);background:var(--surface)}
.ci:last-child{grid-column:1/-1}
.cn{flex:none;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font:700 21px var(--mono);background:var(--l-bg);color:var(--l-fg);border:1px solid color-mix(in srgb,var(--l) 40%,transparent)}
.ci .ct{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}
.ci p{margin:0;font-size:21px;line-height:1.5;color:var(--text-2)}
.links{display:flex;gap:36px;font-size:20px;margin-top:22px}
.links a{color:var(--accent);text-decoration:none}
/* hud */
.hud{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:space-between;align-items:center;padding:12px 18px 16px;z-index:20;transition:opacity .3s;pointer-events:none}
.hud>*{pointer-events:auto}
body.idle .hud{opacity:0}
.hud-l{display:flex;gap:6px;padding:5px;border-radius:14px;background:color-mix(in srgb,var(--surface) 85%,transparent);border:1px solid var(--border);backdrop-filter:blur(10px)}
.hb{min-width:38px;height:36px;padding:0 10px;display:grid;place-items:center;border-radius:10px;border:0;background:transparent;color:var(--text-2);font-size:18px;cursor:pointer;text-decoration:none}
.hb:hover{background:var(--bg-2);color:var(--text)}
.count{font:500 14px var(--mono);color:var(--text-3);padding:8px 14px;border-radius:12px;background:color-mix(in srgb,var(--surface) 85%,transparent);border:1px solid var(--border)}
.count b{color:var(--text);font-weight:600}
.bar-progress{position:fixed;left:0;right:0;top:0;height:3px;z-index:21;background:transparent}
.bar-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--coding),var(--agent),var(--ai));transition:width .4s cubic-bezier(.2,.7,.2,1)}
.overview{position:fixed;inset:0;z-index:40;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(16px);display:grid;place-items:center;padding:30px}
.overview[hidden]{display:none}
.ov-in{width:min(1100px,100%);max-height:100%;overflow:auto}
.ov-h{display:flex;justify-content:space-between;align-items:center;font-size:20px;font-weight:700;margin-bottom:16px}
.ov-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.ov-grid button{display:flex;gap:12px;align-items:baseline;text-align:left;padding:14px 16px;border-radius:14px;border:1px solid var(--border);background:var(--surface);cursor:pointer;font-size:15px;line-height:1.4;position:relative;overflow:hidden}
.ov-grid button::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--l)}
.ov-grid button:hover,.ov-grid button.cur{border-color:var(--l)}
.ov-grid .no{font:600 12px var(--mono);color:var(--text-3)}
@media (max-width:700px){.hud{padding:8px}.hb{min-width:32px;padding:0 6px}}

.bigrow{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.k-wide.L-tui .dia{flex:0 0 330px}

h1,h2,h3,.takeaway,.lead,.sub{text-wrap:balance}
li,p{text-wrap:pretty}