:root{
  --paper:#f3efe6; --paper-2:#ebe5d8; --card:#fbf9f4; --ink:#1b2127; --ink-2:#3c464f; --mute:#77808a; --line:#d9d1c1;
  --hot:#e0462b; --cmd:#1f6f86; --leg:#b0782c; --good:#2f7d5b; --scr:#9aa3ab;
  --serif:'Newsreader',Georgia,serif; --sans:'Inter Tight',system-ui,sans-serif; --mono:'JetBrains Mono',ui-monospace,monospace;
  --r:18px; --shadow:0 1px 0 rgba(27,33,39,.04),0 18px 50px -22px rgba(27,33,39,.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(rgba(27,33,39,.035) 1px,transparent 1px);background-size:22px 22px}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.018em;margin:0}
h1{font-size:clamp(2.6rem,5.2vw,4.9rem);line-height:.98;text-wrap:balance}
h2{text-wrap:balance}
h2{font-size:clamp(1.9rem,3.6vw,3.1rem);line-height:1.05}
h3{font-size:1.35rem}
p{margin:0 0 1rem}
.kicker{font:500 .74rem/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mute);margin:0 0 1.1rem}

/* nav */
.nav{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:14px clamp(16px,4vw,48px);
  background:rgba(243,239,230,.82);backdrop-filter:blur(10px);border-bottom:1px solid rgba(217,209,193,.7)}
.mark{font:600 1rem var(--sans);letter-spacing:.06em;text-decoration:none;display:flex;gap:.5rem;align-items:center}
.nav nav{display:flex;gap:clamp(12px,2.4vw,30px)}
.nav nav a{font-size:.9rem;color:var(--ink-2);text-decoration:none}
.nav nav a:hover{color:var(--hot)}
@media (max-width:640px){.nav nav a:nth-child(2),.nav nav a:nth-child(4){display:none}}

section{padding:clamp(64px,9vw,130px) clamp(16px,4vw,48px);max-width:1440px;margin:0 auto}

/* hero */
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(24px,4vw,64px);align-items:center;min-height:calc(100vh - 60px);padding-top:clamp(28px,5vw,60px)}
.lede{font:400 clamp(1.08rem,1.5vw,1.3rem)/1.55 var(--serif);color:var(--ink-2);max-width:36em;margin:1.6rem 0 2rem}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 1.3rem;border-radius:999px;border:1px solid var(--ink);text-decoration:none;font-weight:500;transition:transform .15s,background .15s,color .15s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.primary:hover{background:var(--hot);border-color:var(--hot)}
.hero-specimen{margin:0;position:relative;height:min(78vh,760px);border-radius:28px;overflow:hidden;
  background:radial-gradient(90% 70% at 50% 42%,#fffdf8 0%,#f1ece1 70%,#e8e1d2 100%);box-shadow:var(--shadow);border:1px solid var(--line)}
.hero-specimen canvas{width:100%;height:100%;display:block;cursor:grab}
.hero-specimen figcaption{position:absolute;left:14px;right:14px;bottom:14px;background:rgba(251,249,244,.85);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:12px;padding:8px 12px;font-size:.82rem;color:var(--mute)}
.tag{font:500 .68rem var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink);border:1px solid var(--ink);border-radius:4px;padding:2px 6px;margin-right:.4rem}
@media (max-width:900px){.hero{grid-template-columns:1fr;min-height:auto}.hero-specimen{height:62vh}}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:2.4rem 0 0;border-top:1px solid var(--line);max-width:36em}
.stats div{padding:14px 16px 0 0}
.stats div+div{padding-left:16px;border-left:1px solid var(--line)}
.stats dd{margin:0;font:500 clamp(1.8rem,3vw,2.5rem)/1 var(--serif);order:-1}
.stats div{display:flex;flex-direction:column;gap:6px}
.stats dt{font-size:.78rem;color:var(--mute);line-height:1.35}

.loader{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:14px;font:500 .78rem var(--mono);letter-spacing:.08em;color:var(--mute);transition:opacity .6s}
.loader span{width:44px;height:44px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--hot);animation:spin 1s linear infinite}
.loader.done{opacity:0;pointer-events:none}
@keyframes spin{to{transform:rotate(360deg)}}

/* exhibit */
.exhibit-head{max-width:880px;margin-bottom:28px}
.stage{display:grid;grid-template-columns:1fr 1.25fr;gap:14px}
.pane{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);min-height:min(66vh,640px)}
.pane-brain{background:radial-gradient(100% 80% at 50% 40%,#fffdf8,#ece6d9)}
.pane-body{background:linear-gradient(#f7f4ec,#e9e2d4)}
.pane canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.pane-label{position:absolute;left:12px;top:12px;background:rgba(251,249,244,.85);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:10px;padding:6px 10px;font:500 .72rem var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);display:flex;gap:8px;align-items:center}
.dot{width:8px;height:8px;border-radius:50%;background:var(--mute)}
.dot.live{background:var(--hot);box-shadow:0 0 0 0 rgba(224,70,43,.5);animation:pulse 1.6s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(224,70,43,0)}100%{box-shadow:0 0 0 0 rgba(224,70,43,0)}}
.pane-legend{position:absolute;left:12px;bottom:12px;background:rgba(251,249,244,.85);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:10px;list-style:none;margin:0;padding:6px 10px;display:flex;flex-wrap:wrap;gap:12px;font-size:.78rem;color:var(--ink-2)}
.pane-legend i{display:inline-block;width:14px;height:3px;border-radius:2px;background:var(--c);margin-right:6px;vertical-align:middle}
.readouts{position:absolute;right:14px;top:12px;display:flex;gap:8px}
.readouts div{background:rgba(251,249,244,.86);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:12px;padding:8px 12px;min-width:84px;text-align:right}
.readouts b{display:block;font:500 1.35rem/1.1 var(--mono)}
.readouts span{font:500 .66rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mute)}
@media (max-width:900px){.stage{grid-template-columns:1fr}.pane{min-height:52vh}.readouts b{font-size:1.05rem}.readouts div{min-width:64px;padding:6px 9px}}

.console{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.control{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px}
.control-label{display:block;font:500 .7rem var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mute);margin-bottom:10px}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.seg button{all:unset;cursor:pointer;border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:#fff;transition:border-color .15s,background .15s,transform .1s}
.seg button:hover{border-color:var(--ink-2)}
.seg button:active{transform:scale(.98)}
.seg button b{display:block;font-weight:600}
.seg button small{display:block;color:var(--mute);font-size:.78rem;line-height:1.3;margin-top:2px}
.seg button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.seg button[aria-pressed=true] small{color:#c7ccd1}
.seg button:focus-visible{outline:2px solid var(--hot);outline-offset:2px}
.transport{grid-column:1/-1;display:flex;align-items:center;gap:14px;padding:10px 14px}
.play{all:unset;cursor:pointer;width:40px;height:40px;border-radius:50%;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-size:.9rem;flex:none}
.scrub{position:relative;flex:1;height:6px;border-radius:99px;background:var(--paper-2);cursor:pointer}
.scrub-fill{position:absolute;inset:0 auto 0 0;width:0;border-radius:99px;background:var(--hot)}
.clock{font:500 .85rem var(--mono);color:var(--ink-2);min-width:4.5em;text-align:right}
@media (max-width:760px){.console{grid-template-columns:1fr}.seg button small{display:none}}

.gait{margin-top:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px}
.gait-head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:baseline}
.gait-note{font-size:.85rem;color:var(--ink-2)}
#gait{width:100%;height:150px;display:block;margin-top:8px}
.caption{font:italic 400 1.15rem/1.5 var(--serif);color:var(--ink-2);max-width:60em;margin:22px 0 0;min-height:3em}

/* discovery */
.discovery{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(24px,5vw,80px);align-items:center}
.col-text p{color:var(--ink-2);font-size:1.05rem}
.col-text h2{margin-bottom:1.2rem}
.pull{font:500 clamp(1.3rem,2.2vw,1.8rem)/1.3 var(--serif)!important;color:var(--ink)!important;border-left:3px solid var(--hot);padding-left:18px;margin-top:1.6rem}
.col-fig{margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
#evo-chart{width:100%;height:360px;display:block}
.col-fig figcaption{font-size:.85rem;color:var(--mute);margin-top:8px}
.k{display:inline-flex;align-items:center;gap:6px;margin:0 14px 6px 0;font-weight:500}
.k::before{content:'';width:18px;height:3px;border-radius:2px;background:currentColor}
.k.real{color:var(--hot)} .k.scr{color:var(--scr)}
@media (max-width:900px){.discovery{grid-template-columns:1fr}}

/* dials */
.dials-head{max-width:760px;margin-bottom:26px}
.dials-head p{color:var(--ink-2)}
.dial-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:6px 26px}
.dial{display:grid;grid-template-columns:5.2em 1fr 3.4em;gap:10px;align-items:center;font:500 .8rem var(--mono);padding:5px 0;border-bottom:1px dashed var(--line)}
.dial .bar{position:relative;height:10px}
.dial .bar::before{content:'';position:absolute;left:50%;top:-3px;bottom:-3px;width:1px;background:var(--ink-2);opacity:.35}
.dial .fill{position:absolute;top:0;bottom:0;border-radius:3px}
.dial .v{text-align:right;color:var(--ink-2)}

/* evidence */
.evidence h2{max-width:880px;margin-bottom:28px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.card .big{font:500 clamp(2.2rem,4vw,3.2rem)/1 var(--serif)}
.card .big small{font:500 .9rem var(--mono);color:var(--mute);margin-left:.4rem}
.card h3{font-size:1.2rem}
.card p{color:var(--ink-2);font-size:.95rem;margin:0}
.card .vs{display:grid;gap:6px;margin-top:4px}
.card .vs div{display:grid;grid-template-columns:7.5em 1fr 3.4em;gap:8px;align-items:center;font:500 .76rem var(--mono);color:var(--ink-2)}
.card .vs .t{height:8px;border-radius:99px;background:var(--paper-2);overflow:hidden}
.card .vs .t i{display:block;height:100%;border-radius:99px}
.card .src{font:400 .72rem var(--mono);color:var(--mute);margin-top:auto}
.verdict{align-self:flex-start;font:600 .7rem var(--mono);letter-spacing:.08em;text-transform:uppercase;padding:4px 8px;border-radius:6px}
.verdict.pass{background:#dcefe4;color:var(--good)} .verdict.partial{background:#f7e7c8;color:#8a5a00} .verdict.fail{background:#f1dcd6;color:#9c2f1b}
.honest{margin-top:34px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.honest table{width:100%;border-collapse:collapse;margin-top:12px}
.honest th{font:500 .72rem var(--mono);letter-spacing:.12em;text-transform:uppercase;text-align:left;vertical-align:top;padding:14px 18px 14px 0;color:var(--mute);width:9em;border-top:1px solid var(--line)}
.honest td{padding:14px 0;border-top:1px solid var(--line);color:var(--ink-2)}

/* build */
.build{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(24px,5vw,80px)}
.build h2{margin-bottom:1rem}
.build>div>p{color:var(--ink-2)}
.problems{list-style:none;padding:0;margin:1.4rem 0 0;display:grid;gap:10px}
.problems li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;color:var(--ink-2)}
.problems b{color:var(--ink)}
.credits{border-left:1px solid var(--line);padding-left:clamp(16px,3vw,40px)}
.credits h3{margin-bottom:1rem}
.credits p{font-size:.9rem;color:var(--ink-2)}
@media (max-width:900px){.build{grid-template-columns:1fr}.credits{border-left:0;padding-left:0}}

.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:26px clamp(16px,4vw,48px) 40px;border-top:1px solid var(--line);font-size:.82rem;color:var(--mute);max-width:1440px;margin:0 auto}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* battery */
.battery h2{max-width:980px;margin-bottom:18px}
.battery-lede,.exhibit-note{max-width:760px;color:var(--ink-2)}
.exhibit-note{margin:14px 0 0;font-size:.95rem}
.battery-run,.battery-next{font:400 .78rem/1.5 var(--mono);color:var(--mute);max-width:900px}
.battery-table{margin-top:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden}
.bt-row{display:grid;grid-template-columns:minmax(0,2.6fr) repeat(3,minmax(0,1fr)) minmax(0,1.1fr);gap:12px;align-items:center;padding:16px 22px;border-top:1px solid var(--line);font:500 .9rem var(--mono)}
.bt-head{border-top:0;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.bt-name{font:500 1rem/1.35 var(--sans)}
.bt-name b{font-family:var(--mono);color:var(--mute);margin-right:.4rem}
.bt-name small{display:block;font:400 .82rem/1.4 var(--sans);color:var(--ink-2);margin-top:4px}
.bt-verdict{justify-self:start;padding:.3rem .7rem;border-radius:99px;font-size:.72rem;background:var(--paper-2);color:var(--ink-2)}
.bt-verdict.yes{background:var(--good);color:#fff}
.bt-verdict.partial{background:var(--leg);color:#fff}
@media (max-width:760px){
  .bt-head{display:none}
  .bt-row{grid-template-columns:repeat(3,minmax(0,1fr));padding:16px}
  .bt-name,.bt-verdict{grid-column:1/-1}
  .bt-row span[data-k]::before{content:attr(data-k);display:block;font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mute)}
}
/* explainer */
.what h2,.read h2,.why h2{max-width:900px;margin-bottom:26px}
.what-grid,.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.what-grid article,.why-grid>div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.what-grid h3,.why-grid h3{font-size:1.35rem;margin:.2rem 0 .6rem}
.what-grid p,.why-grid p{color:var(--ink-2);margin:0}
.step{font:500 .72rem var(--mono);color:var(--mute);border:1px solid var(--line);border-radius:99px;padding:.15rem .55rem}
.credit-line{margin-top:18px;color:var(--mute);font-size:.9rem;max-width:900px}
.read-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.read-case{display:flex;flex-direction:column;gap:6px;padding:20px;border-radius:var(--r);border:1px solid var(--line);background:var(--card)}
.read-case span{color:var(--ink-2)}
.read-case em{font:500 .74rem var(--mono);font-style:normal;align-self:flex-start;padding:.25rem .65rem;border-radius:99px;margin-top:6px;background:var(--paper-2)}
.read-case.pass em,.bt-verdict.pass{background:var(--good);color:#fff}
.read-case.edge em,.bt-verdict.edge{background:var(--leg);color:#fff}
.read-case.fail em,.bt-verdict.fail{background:var(--paper-2);color:var(--ink-2)}
.bt-foot{padding:14px 22px;border-top:1px solid var(--line);font:400 .78rem/1.5 var(--mono);color:var(--mute)}
.stats .dd-note{font:400 .72rem var(--mono);color:var(--mute);margin:.2rem 0 0}