:root{
  --bg:#000;--ink:#b9cdbd;--dim:#66806c;--green:#46d65f;--glow:#2fbf4b;--orange:#f39a2e;--line:rgba(70,214,95,.16);--panel:rgba(1,5,2,.9);--beam:#4c8500;--beam2:#1b3500;
  --disp:"Exo 2",system-ui,sans-serif;--serif:Cinzel,Georgia,serif;--mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
}
body.oc{--glow:#ff8a1f;--green:#ffb02e;--line:rgba(255,160,50,.34);--beam:#e07a10;--beam2:#5e2c00}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
html,body{overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 var(--mono)}
a{color:inherit}
h1,h2,h3,p,dl,dd,ol,figure{margin:0;padding:0}

/* Layers: giant fan, then rain, then scanlines, then content. */
.bg{position:fixed;inset:0;display:grid;place-items:center;z-index:0;overflow:hidden}
.bg-fan{width:max(135vmin,760px);height:max(135vmin,760px);opacity:.09;filter:drop-shadow(0 0 40px var(--glow));transition:opacity .4s}
body.oc .bg-fan{opacity:.2}
.bg-ring{fill:none;stroke:var(--glow);stroke-width:3}
#bgRotor path{fill:#0f3a1a;stroke:var(--glow);stroke-width:1}
body.oc #bgRotor path{fill:#4a2506}
.bg-hub{fill:#031006;stroke:var(--glow);stroke-width:3}
#rain{position:fixed;inset:0;width:100%;height:100%;z-index:1;pointer-events:none;opacity:.42}
.scan{position:fixed;inset:0;z-index:2;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(0,0,0,.2) 0 1px,transparent 1px 3px)}
.nav,main,footer{position:relative;z-index:3}
.nav{position:absolute;top:0;left:0;right:0;z-index:6}

.nav{display:flex;justify-content:space-between;align-items:center;padding:16px clamp(16px,4vw,48px)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 21px/1 var(--serif);letter-spacing:.06em;color:#eafff0}
.brand img{border:1px solid var(--green);display:block}
.nav nav{display:flex;gap:clamp(14px,3vw,32px)}
.nav nav a{text-decoration:none;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.nav nav a:hover{color:var(--green)}

/* Poster hero. Everything inside .stage is sized from the stage width so the title stays locked to the art. */
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:0 16px 44px}
.stage{position:relative;width:100vw;aspect-ratio:2000/667;container-type:inline-size;overflow:hidden;background:#000;-webkit-mask:linear-gradient(180deg,#000 90%,transparent);mask:linear-gradient(180deg,#000 90%,transparent)}
.stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:65% 0;display:block}
#rain2{position:absolute;inset:0;width:100%;height:100%;mix-blend-mode:screen;-webkit-mask:linear-gradient(90deg,#000,#000 29%,transparent 41%,transparent 83%,#000 91%);mask:linear-gradient(90deg,#000,#000 29%,transparent 41%,transparent 83%,#000 91%)}
.floor{position:absolute;inset:0;pointer-events:none;background:radial-gradient(38cqw 24cqw at 21.5% 46%,rgba(0,0,0,.5),transparent 75%)}
h1{position:absolute;left:21.5%;top:46%;transform:translate(-50%,-50%);font-weight:400;white-space:nowrap}
.niu{position:relative;display:block;font:700 7.2cqw/1 var(--serif);letter-spacing:.05em;color:#a9e6b6;text-shadow:0 0 .12em rgba(47,191,75,.55),0 0 .55em rgba(47,191,75,.3);animation:flick 5.5s linear infinite}
.niu::before,.niu::after{content:attr(data-t);position:absolute;inset:0;color:#c9f3d2;opacity:0}
.niu::before{clip-path:inset(18% 0 58% 0);animation:gl1 5.5s steps(1) infinite}
.niu::after{clip-path:inset(62% 0 12% 0);animation:gl2 5.5s steps(1) infinite}
@keyframes flick{0%,41%,44%,47%,100%{opacity:1}42.5%{opacity:.55}45.5%{opacity:.75}}
@keyframes gl1{0%,40%,48%,100%{opacity:0;transform:none}41%{opacity:1;transform:translateX(.09em)}44%{opacity:1;transform:translateX(-.13em)}46%{opacity:1;transform:translateX(.05em)}}
@keyframes gl2{0%,40%,48%,100%{opacity:0;transform:none}42%{opacity:1;transform:translateX(-.1em)}45%{opacity:1;transform:translateX(.12em)}}
.full{display:block;margin-top:.9em;font:700 max(11px,1.32cqw)/1 var(--disp);letter-spacing:.17em;color:var(--green);text-shadow:0 0 12px var(--glow)}
.streak{position:absolute;left:50%;width:36cqw;height:1px;transform:translateX(-50%);background:linear-gradient(90deg,transparent,var(--glow) 22%,var(--glow) 78%,transparent);opacity:.4;animation:streak 3.4s ease-in-out infinite}
.streak.a{top:6%}.streak.b{top:41%;animation-delay:-1.3s}.streak.c{top:66%;animation-delay:-2.2s;width:33cqw}
@keyframes streak{0%,100%{opacity:.14;transform:translateX(-50%) scaleX(.82)}50%{opacity:.5;transform:translateX(-50%) scaleX(1)}}
.tag{margin:0 0 4px;font:500 clamp(16px,1.6vw,21px) var(--disp);letter-spacing:.02em;color:var(--ink);background:rgba(2,8,4,.7);padding:2px 10px}
.tag b{color:var(--green);font-weight:700}

.power{position:relative;overflow:hidden;background:#000;border-block:1px solid var(--line)}
.power-in{position:relative;z-index:2;max-width:1120px;margin:0 auto;padding:72px 16px 64px;display:flex;flex-direction:column;align-items:center;text-align:center}
/* Light planes the card sits on, plus speed lines racing past it. */
.beams{position:absolute;inset:0;pointer-events:none}
.beams i{position:absolute;left:-12%;width:124%;transition:background .5s}
.b1{top:37%;height:26px;transform:rotate(-3.2deg);clip-path:polygon(0 46%,100% 0,100% 100%,0 54%);background:linear-gradient(90deg,transparent 4%,var(--beam2) 34%,var(--beam) 92%)}
.b2{top:58%;height:44%;transform:rotate(5deg);clip-path:polygon(0 0,100% 34%,100% 74%,0 16%);background:linear-gradient(90deg,#000 6%,var(--beam2) 46%,var(--beam) 120%);opacity:.55}
.b3{top:89%;height:46px;transform:rotate(7deg);clip-path:polygon(0 0,100% 0,100% 100%,0 40%);background:linear-gradient(90deg,#000 10%,var(--beam2) 50%,var(--beam));opacity:.8}
.beams s{position:absolute;right:-30%;width:26%;height:1px;background:linear-gradient(90deg,transparent,#dff5c9);opacity:.5;animation:race 2.4s linear infinite}
.beams s:nth-of-type(1){top:21%}.beams s:nth-of-type(2){top:33%;animation-delay:-.7s;animation-duration:1.8s}.beams s:nth-of-type(3){top:47%;animation-delay:-1.5s;animation-duration:3s}
.beams s:nth-of-type(4){top:62%;animation-delay:-.3s;animation-duration:2.1s}.beams s:nth-of-type(5){top:76%;animation-delay:-1.1s}.beams s:nth-of-type(6){top:87%;animation-delay:-1.9s;animation-duration:1.6s}
body.oc .beams s{animation-duration:.5s!important}
@keyframes race{to{transform:translateX(-520%)}}

.rig{position:relative;width:min(960px,110vh,100%);padding:14px 5% 26px 0}
.card{position:relative;perspective:1500px;animation:hum .13s linear infinite alternate}
body.oc .card{animation-duration:.04s}
@keyframes hum{from{transform:translate(0,0)}to{transform:translate(.35px,-.4px)}}
.gpu3d{position:relative;transform-style:preserve-3d;transform:rotateY(var(--ry,-27deg)) rotateX(var(--rx,-7deg));transition:transform .25s ease-out}
.face{position:relative;filter:drop-shadow(0 0 22px rgba(0,0,0,.9))}
.face svg{display:block;width:100%;height:auto}
#arcs{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.g-side{position:absolute;top:1.8%;bottom:1.8%;right:.8%;width:9%;transform-origin:100% 50%;transform:rotateY(-90deg);background:linear-gradient(180deg,rgba(255,255,255,.22),transparent 14%,transparent 80%,rgba(0,0,0,.7)),repeating-linear-gradient(180deg,#26292e 0 5px,#040506 5px 9px);border-block:3px solid #6b7076}
.g-side i{display:none}
.g-top{position:absolute;left:1%;right:.8%;top:1.8%;height:20.5%;transform-origin:50% 0;transform:rotateX(-90deg);background:linear-gradient(90deg,#0d0e11,#3d4146 62%,#8e9399)}
.g-top span{position:absolute;right:15%;top:24%;width:13%;height:50%;background:#050607;border:1px solid #6b7076;box-shadow:0 0 10px var(--glow)}
.g-shadow{position:absolute;left:6%;right:12%;bottom:0;height:34px;background:radial-gradient(closest-side,rgba(0,0,0,.95),transparent);filter:blur(6px)}
.rotor path{fill:url(#bl);stroke:#7d838a;stroke-width:.8;stroke-opacity:.5}
.blur{fill:#c9ced3;opacity:calc(var(--spin,.1)*.12)}
.hub-t{font:700 26px var(--serif);fill:#e8ebee;text-anchor:middle;letter-spacing:.04em}
.g-badge{font:700 58px var(--disp);fill:#eef1f3;text-anchor:middle;letter-spacing:.02em}
.g-sub{font:500 15px var(--mono);fill:var(--green);text-anchor:middle;letter-spacing:.34em}
.led{fill:var(--glow);filter:drop-shadow(0 0 6px var(--glow));animation:led 1.6s ease-in-out infinite alternate}
@keyframes led{from{opacity:.4}to{opacity:1}}

.hud{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 26px;margin-top:6px;font-size:13px;color:#93a897;background:rgba(0,0,0,.72);padding:6px 14px}
.hud b{color:var(--green);font-variant-numeric:tabular-nums}
.actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:18px}
.btn{display:inline-block;font:700 15px/1 var(--disp);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;padding:17px 34px;background:rgba(2,8,4,.85);color:var(--green);border:2px solid var(--green);cursor:pointer;transition:background .15s,color .15s,transform .15s}
.btn:hover{background:var(--green);color:#021004;transform:translateY(-2px)}
.btn.go{background:var(--green);color:#010602;border-color:var(--green)}
.btn.go:hover{background:#fff;border-color:#fff}
.oc-btn{border-color:var(--orange);color:var(--orange)}
.oc-btn:hover,.oc-btn[aria-pressed=true]{background:var(--orange);color:#160a00;border-color:var(--orange)}
.btn.wide{display:block;text-align:center;margin-top:24px}
:focus-visible{outline:2px solid #fff;outline-offset:3px}

.ca{display:flex;align-items:center;gap:12px;max-width:100%;margin-top:16px;padding:10px 14px;background:var(--panel);border:1px solid var(--line);color:var(--ink);font:13px var(--mono);cursor:pointer}
.ca:hover{border-color:var(--green)}
.ca code{font:inherit;word-break:break-all;text-align:left}
.ca-k{color:var(--orange);font-weight:700}
.ca-c{color:var(--green);font-weight:700;white-space:nowrap}

.tape{overflow:hidden;background:rgba(1,10,4,.92);color:var(--green);border-block:1px solid var(--line)}
.tape div{display:flex;width:max-content;animation:tape 26s linear infinite}
.tape span{font:700 13px/1 var(--disp);letter-spacing:.2em;padding:13px 26px;white-space:nowrap}
.tape span::after{content:"\25AE";margin-left:52px}
@keyframes tape{to{transform:translateX(-50%)}}

.sec{max-width:1040px;margin:0 auto;padding:64px 16px}
h2{font:700 clamp(25px,3.3vw,42px)/1.1 var(--serif);letter-spacing:.06em;color:#bcd9c2;text-shadow:0 0 .5em rgba(47,191,75,.3);margin-bottom:22px}
.power h2{margin-bottom:6px}
.lead{margin-bottom:14px;color:var(--ink);background:rgba(0,0,0,.7);padding:0 10px}
.power .oc-btn{margin-top:18px}
.term{background:rgba(0,6,2,.9);border:1px solid var(--green);box-shadow:0 0 34px color-mix(in srgb,var(--glow) 25%,transparent)}
.term-bar{display:flex;align-items:center;gap:7px;padding:9px 12px;border-bottom:1px solid var(--line);color:var(--dim);font-size:12px}
.term-bar i{width:10px;height:10px;background:var(--green);opacity:.6}
.term-bar span{margin-left:8px}
.term-body{padding:clamp(16px,3vw,30px);color:var(--green);font-size:clamp(14px,1.5vw,16.5px)}
.term-body p{margin-bottom:9px;min-height:1.6em}
.term-body .cmd{color:var(--dim);margin-top:18px}
.term-body .cmd:first-child{margin-top:0}
.term-body .cmd::before{content:"root@niu:~$ ";color:var(--orange)}
.term-body .big{font:700 clamp(22px,3vw,34px)/1.18 var(--serif);color:#bcd9c2;text-shadow:none}
.term-body .hl{color:var(--orange);font-weight:700}
.term-body .ok{color:#bcd9c2}
.term .off{visibility:hidden}
.term .cur{display:inline-block;width:.55em;height:1em;background:var(--green);vertical-align:-.12em;animation:blink .7s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.rig-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.panel{background:var(--panel);border:1px solid var(--line);padding:22px}
h3{font:700 19px/1.1 var(--disp);letter-spacing:.1em;text-transform:uppercase;color:var(--green);margin-bottom:16px;display:flex;justify-content:space-between;align-items:center;gap:10px}
h3 em{font:500 11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
h3 em.on{color:var(--green)}
.panel:first-child{display:flex;flex-direction:column}
.live-n{display:grid;grid-template-columns:1fr 1fr;gap:18px 14px;flex:1;align-content:space-evenly}
dt{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
dd{font:700 clamp(28px,3.6vw,42px)/1.15 var(--disp);color:#fff;font-variant-numeric:tabular-nums}
dd.up{color:var(--green)}dd.down{color:#ff5c5c}
.note{margin-top:18px;font-size:12px;color:var(--dim)}
.spec{width:100%;border-collapse:collapse;font-size:14px}
.spec th,.spec td{padding:7px 0;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{text-align:left;font-weight:400;color:var(--dim);padding-right:12px;white-space:nowrap}
.spec td{text-align:right}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}

.steps{list-style:none;counter-reset:s;background:var(--panel);border:1px solid var(--line)}
.steps li{counter-increment:s;display:grid;grid-template-columns:64px 1fr;padding:16px 20px;border-bottom:1px solid var(--line);column-gap:8px}
.steps li:last-child{border-bottom:0}
.steps li::before{content:"0" counter(s);grid-row:1/3;font:700 40px/1 var(--serif);color:var(--green)}
.steps b{font-size:17px;color:#fff}
.steps span{color:var(--dim)}

footer{max-width:1040px;margin:0 auto;padding:26px 16px 44px;font-size:12px;color:var(--dim);border-top:1px solid var(--line)}
footer p{background:rgba(2,8,4,.74);padding:4px 0}
footer b{color:var(--orange)}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);z-index:9;background:var(--green);color:#021004;font-weight:700;padding:9px 16px;opacity:0;transition:.2s;pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:760px){
  .stage{aspect-ratio:auto;height:104vw}
  .stage img{object-position:65% 0}
  #rain2{-webkit-mask:linear-gradient(90deg,#000,transparent 14%,transparent 86%,#000);mask:linear-gradient(90deg,#000,transparent 14%,transparent 86%,#000)}
  .floor{background:linear-gradient(180deg,transparent 52%,rgba(0,0,0,.82) 82%)}
  h1{left:50%;top:auto;bottom:9%;transform:translateX(-50%)}
  .niu{font-size:18cqw}
  .nav nav a:not(:last-child){display:none}
  .full{font-size:3.5cqw;margin-top:.7em}
  .streak{width:90cqw}.streak.c{width:74cqw}
  .power-in{padding:52px 16px 48px}
  .rig{padding:10px 8% 22px 0}
  .gpu3d{--ry:-20deg;--rx:-5deg}
  .hud{gap:4px 16px;font-size:12px}
  .actions{width:100%}
  .actions .btn{flex:1 1 auto;text-align:center;padding:14px 16px}
  .rig-grid{grid-template-columns:1fr}
  .sec{padding:48px 16px}
  .ca{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}