:root{
  --bg:#05070c; --bg2:#080b13; --panel:rgba(255,255,255,.035); --line:rgba(255,255,255,.09);
  --line2:rgba(255,255,255,.16); --fg:#e8edf7; --mut:#8d99b0; --acc:#4dd6ff; --acc2:#7c8cff;
  --acc3:#39e0a8; --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Inter",system-ui,-apple-system,Segoe UI,sans-serif; --r:14px; --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.12;letter-spacing:-.025em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5.2vw,3.9rem);font-weight:800}
h2{font-size:clamp(1.55rem,3.2vw,2.5rem);font-weight:700;max-width:20ch}
h3{font-size:1.03rem;font-weight:650}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--acc);color:#04121a;padding:10px 16px;z-index:100}
.skip-link:focus{left:12px;top:12px;border-radius:8px}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px;border-radius:8px}
.grad{background:linear-gradient(100deg,var(--acc),var(--acc2) 60%,var(--acc3));-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{font:600 .74rem/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--acc);margin:0 0 14px}
.body{color:var(--mut);margin:0 0 16px;font-size:1rem}
.body.max{max-width:66ch}
.muted{color:var(--mut)}
.hint{color:var(--mut);font-size:.85rem;margin-top:18px}

/* nav */
.nav{position:sticky;top:0;z-index:60;backdrop-filter:blur(14px);background:rgba(5,7,12,.72);
  border-bottom:1px solid transparent;transition:border-color .25s,background .25s}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(5,7,12,.9)}
.nav-inner{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;letter-spacing:-.02em}
.brand-mark{width:20px;height:20px;border-radius:6px;background:linear-gradient(135deg,var(--acc),var(--acc2));
  box-shadow:0 0 18px rgba(77,214,255,.45)}
.nav-links{display:flex;gap:22px;margin-left:auto;font-size:.9rem}
.nav-links .mobile-only{display:none}
.nav-links a{color:var(--mut);transition:color .2s;position:relative;padding:6px 0}
.nav-links a:hover,.nav-links a.active{color:var(--fg)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--acc)}
.nav-cta{display:flex;gap:10px;margin-left:18px}
.hamburger{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:42px;height:38px;
  margin-left:auto;cursor:pointer;padding:9px 10px}
.hamburger span{display:block;height:1.6px;background:var(--fg);margin:3.4px 0;transition:.25s}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;
  padding:9px 16px;font-size:.9rem;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.2s}
.btn-lg{padding:13px 24px;font-size:.98rem}
.btn-primary{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#050a12;
  box-shadow:0 8px 30px -12px rgba(90,160,255,.8)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 36px -12px rgba(90,160,255,.9)}
.btn-outline{border-color:var(--line2);color:var(--fg);background:var(--panel)}
.btn-outline:hover{border-color:var(--acc);color:var(--acc)}
.btn-ghost{color:var(--mut)}
.btn-ghost:hover{color:var(--fg)}

/* panels */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  backdrop-filter:blur(8px);position:relative}
.section{padding:clamp(64px,9vw,120px) 0;position:relative}
.section:nth-of-type(even){background:linear-gradient(180deg,transparent,var(--bg2),transparent)}

/* hero */
.hero{position:relative;padding:clamp(56px,8vw,110px) 0 clamp(60px,8vw,110px);overflow:hidden}
.grid-bg{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 20%,transparent 75%);opacity:.55}
.hero::after{content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:900px;height:520px;
  background:radial-gradient(circle,rgba(90,150,255,.22),transparent 65%);filter:blur(20px);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.03fr .97fr;gap:clamp(32px,5vw,64px);align-items:center}
.badge{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line2);border-radius:999px;
  padding:6px 14px;font:500 .8rem/1.4 var(--mono);color:var(--mut);background:var(--panel);margin-bottom:22px}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--acc3);box-shadow:0 0 0 0 rgba(57,224,168,.6);animation:ping 2.2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 8px rgba(57,224,168,0)}100%{box-shadow:0 0 0 0 rgba(57,224,168,0)}}
.lede{color:#aab6ca;font-size:clamp(1rem,1.4vw,1.12rem);max-width:60ch;margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-actions.center,.install-row.center{justify-content:center}
.install-row{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:11px;
  background:rgba(255,255,255,.03);padding:8px 8px 8px 14px;max-width:100%;flex-wrap:wrap}
.install-row code{font:500 .88rem/1 var(--mono);color:var(--acc)}
.copy{background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--mut);border-radius:8px;
  padding:6px 12px;font-size:.78rem;font-weight:600;cursor:pointer;transition:.2s}
.copy:hover{color:var(--fg);border-color:var(--acc)}

.hero-visual{display:grid;gap:16px}
.panel-head{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
.panel-title{font:500 .75rem/1 var(--mono);color:var(--mut);letter-spacing:.1em;text-transform:uppercase}
.pulse-live{font:500 .7rem/1 var(--mono);color:var(--acc3)}
.flow{list-style:none;margin:0;padding:18px;display:grid;gap:10px}
.flow-node{border:1px solid var(--line);border-radius:11px;padding:11px 14px;display:flex;justify-content:space-between;
  align-items:center;gap:12px;background:rgba(255,255,255,.02);transition:.35s;position:relative}
.flow-node+.flow-node::before{content:"";position:absolute;top:-11px;left:24px;width:1px;height:10px;background:var(--line2)}
.flow-node.on{border-color:var(--acc);box-shadow:0 0 26px -8px rgba(77,214,255,.65);transform:translateX(3px)}
.fn-k{font-weight:650;font-size:.93rem}
.fn-s{font:400 .76rem/1 var(--mono);color:var(--mut)}
.term-panel{overflow:hidden}
.term-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
.term-bar i{width:10px;height:10px;border-radius:50%;background:#2b3346;display:block}
.term-bar i:first-child{background:#ff5f57}.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-title{margin-left:8px;font:400 .74rem/1 var(--mono);color:var(--mut)}
.term{margin:0;padding:16px;font:400 .8rem/1.75 var(--mono);color:#cfe0f5;min-height:250px;white-space:pre-wrap;word-break:break-word}
.term .p{color:var(--acc3)}
.term .c{color:#e8edf7}
.term .o{color:var(--mut)}
.cursor{display:inline-block;width:8px;height:1em;background:var(--acc);vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* layouts */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,52px);align-items:center;margin-top:32px}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:22px 0 0}
.chips li{border:1px solid var(--line);border-radius:999px;padding:5px 12px;font:400 .77rem/1.4 var(--mono);color:var(--mut)}
.decay{padding:22px;display:grid;gap:12px}
.decay-step{border:1px solid var(--line);border-radius:11px;padding:13px 16px;text-align:center;font-size:.93rem;color:var(--mut)}
.decay-step:nth-child(1){color:var(--fg);opacity:1}
.decay-step:nth-child(2){opacity:.85}.decay-step:nth-child(3){opacity:.7}.decay-step:nth-child(4){opacity:.55}

.split{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center;margin-top:34px}
.plus{font-size:1.6rem;color:var(--acc);font-weight:700}
.role{padding:26px}
.role h3{color:var(--acc);font-family:var(--mono);font-size:.85rem;letter-spacing:.14em;text-transform:uppercase}
.role.alt h3{color:var(--acc2)}
.role-list{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-wrap:wrap;gap:9px}
.role-list li{border:1px solid var(--line);border-radius:9px;padding:7px 13px;font-size:.9rem;background:rgba(255,255,255,.02)}

/* pipeline */
.pipeline{display:grid;gap:12px;margin-top:34px}
.stage{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:center;padding:18px 20px;cursor:default;
  transition:.25s;background:var(--panel);border:1px solid var(--line);border-radius:var(--r)}
.stage:hover,.stage:focus-within{border-color:var(--acc);background:rgba(77,214,255,.05);transform:translateY(-2px)}
.stage-n{font:600 .8rem/1 var(--mono);color:var(--acc);border:1px solid var(--line2);border-radius:9px;
  width:44px;height:44px;display:grid;place-items:center}
.stage-t{font-weight:650;font-size:.95rem;letter-spacing:.02em}
.stage-d{color:var(--mut);font-size:.88rem;max-height:0;opacity:0;overflow:hidden;transition:.3s}
.stage:hover .stage-d,.stage:focus-within .stage-d{max-height:70px;opacity:1;margin-top:5px}

/* graph */
.tree{font:400 .82rem/1.7 var(--mono);color:var(--mut);background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:var(--r);padding:18px;overflow-x:auto;margin:0 0 20px}
.graph-panel{padding:12px;overflow:hidden}
#graph-canvas{width:100%;height:auto;display:block}
.gedge{stroke:var(--line2);stroke-width:1;opacity:0;transition:opacity .5s}
.gedge.on{opacity:1;animation:dash 3s linear infinite}
@keyframes dash{to{stroke-dashoffset:-18}}
.gnode circle{fill:#0b1220;stroke:var(--acc);stroke-width:1.2;transition:.4s}
.gnode.f circle{stroke:var(--acc2)}.gnode.s circle{stroke:var(--acc3)}
.gnode text{fill:#cfe0f5;font:500 9.5px var(--mono)}
.gnode{opacity:0;transform-box:fill-box;transition:opacity .5s}
.gnode.on{opacity:1}
.gnode:hover circle{filter:drop-shadow(0 0 8px currentColor);r:9}

/* privacy */
.lock-card{display:flex;gap:14px;align-items:center;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;background:rgba(57,224,168,.05)}
.lock{width:30px;height:30px;color:var(--acc3);flex:none}
.lock-card strong{display:block;font-size:.95rem}
.lock-card span{color:var(--mut);font-size:.86rem}
.machine{padding:22px;border-color:rgba(57,224,168,.28);box-shadow:inset 0 0 60px -30px rgba(57,224,168,.5)}
.machine-label{font:600 .72rem/1 var(--mono);letter-spacing:.2em;color:var(--acc3);margin-bottom:16px}
.machine-flow{display:grid;gap:10px}
.machine-flow div{border:1px dashed var(--line2);border-radius:10px;padding:12px 15px;font-size:.92rem;text-align:center}

/* deterministic */
.det-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px}
.det{padding:20px}
.det strong{display:block;margin-bottom:6px;font-size:.95rem}
.det span{color:var(--mut);font-size:.86rem}
.nots{list-style:none;display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:22px 0 0}
.nots li{font:500 .8rem/1.4 var(--mono);color:var(--acc);border:1px solid rgba(77,214,255,.3);
  background:rgba(77,214,255,.06);border-radius:999px;padding:6px 14px}

/* tabs */
.tabs-panel{margin-top:30px;overflow:hidden}
.tabs{display:flex;gap:4px;padding:10px 12px;border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center}
.tab{background:none;border:1px solid transparent;color:var(--mut);border-radius:9px;padding:7px 14px;
  font-size:.85rem;font-weight:600;cursor:pointer;transition:.2s}
.tab:hover{color:var(--fg)}
.tab.active{color:var(--fg);background:rgba(255,255,255,.06);border-color:var(--line)}
.tab-copy{margin-left:auto}
.tabpanel pre{margin:0;padding:22px;overflow-x:auto}
.tabpanel code{font:400 .84rem/1.75 var(--mono);color:#cfe0f5;white-space:pre}

/* stacks/grids */
.stack{padding:22px;display:grid;gap:10px}
.stack div{border:1px solid var(--line);border-radius:10px;padding:13px 16px;text-align:center;font-size:.93rem;
  background:linear-gradient(90deg,rgba(124,140,255,.07),transparent)}
.lang-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px}
.lang{padding:20px;transition:.25s}
.lang:hover{transform:translateY(-3px);border-color:var(--acc);box-shadow:0 14px 40px -22px rgba(77,214,255,.9)}
.lang strong{display:block;font-size:1rem}
.lang span{font:400 .78rem/1.6 var(--mono);color:var(--mut)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px}
.metric{padding:26px 20px;text-align:center}
.metric b{display:block;font:800 clamp(1.8rem,3.4vw,2.7rem)/1 var(--sans);
  background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.metric span{color:var(--mut);font-size:.85rem;display:block;margin-top:8px}
.case{margin-top:16px;padding:24px}
.case strong{font-size:1.05rem}
.case span{font:400 .78rem/1 var(--mono);color:var(--acc3);margin-left:10px}
.case p{margin-top:12px;margin-bottom:0}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:32px}
.feat{padding:22px;transition:.25s}
.feat:hover{border-color:var(--line2);transform:translateY(-3px);background:rgba(255,255,255,.055)}
.feat p{color:var(--mut);font-size:.89rem;margin:0}

/* steps */
.steps{display:grid;gap:12px;margin-top:32px}
.step{border:1px solid var(--line);border-radius:var(--r);background:var(--panel);overflow:hidden}
.step-head{display:flex;align-items:center;gap:14px;width:100%;background:none;border:0;color:var(--fg);
  padding:18px 20px;cursor:pointer;text-align:left;font:600 .97rem/1.3 var(--sans)}
.step-head:hover{background:rgba(255,255,255,.04)}
.step-i{font:600 .78rem/1 var(--mono);color:var(--acc);border:1px solid var(--line2);border-radius:8px;
  width:30px;height:30px;display:grid;place-items:center;flex:none}
.step-head .chev{margin-left:auto;color:var(--mut);transition:.25s}
.step.open .chev{transform:rotate(90deg);color:var(--acc)}
.step-body{max-height:0;overflow:hidden;transition:max-height .3s ease}
.step-body .inner{padding:0 20px 18px 64px;color:var(--mut);font-size:.9rem}
.step-body code{font:500 .85rem/1.8 var(--mono);color:var(--acc);display:block}

/* timeline */
.timeline{list-style:none;padding:0;margin:34px 0 0;position:relative}
.timeline::before{content:"";position:absolute;left:14px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--acc),var(--acc2),transparent)}
.timeline li{display:grid;grid-template-columns:70px 1fr auto;gap:16px;align-items:center;padding:16px 18px 16px 44px;
  position:relative;border:1px solid var(--line);border-radius:var(--r);margin-bottom:12px;background:var(--panel)}
.timeline li::before{content:"";position:absolute;left:9px;top:50%;transform:translateY(-50%);width:11px;height:11px;
  border-radius:50%;background:var(--bg);border:1.5px solid var(--line2)}
.timeline li.done::before{background:var(--acc3);border-color:var(--acc3);box-shadow:0 0 14px rgba(57,224,168,.7)}
.tl-v{font:700 .95rem/1 var(--mono);color:var(--acc)}
.tl-t{font-size:.96rem}
.tl-s{color:var(--mut)}
.timeline li.done .tl-s{color:var(--acc3)}

.ladder{display:grid;gap:10px;margin-top:32px}
.rung{padding:15px 20px;text-align:center;font-size:.97rem}
.rung:nth-child(1){width:52%}.rung:nth-child(2){width:64%}.rung:nth-child(3){width:76%}
.rung:nth-child(4){width:88%}.rung:nth-child(5){width:100%;border-color:var(--acc);
  background:linear-gradient(90deg,rgba(77,214,255,.1),rgba(124,140,255,.06))}

/* cta + footer */
.cta-section{text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 60% 70% at 50% 100%,rgba(90,150,255,.18),transparent 70%)}
.cta-inner{position:relative}
.cta-inner h2{margin-inline:auto;max-width:18ch}
.cta-inner .lede{margin-inline:auto}
.footer{border-top:1px solid var(--line);padding:44px 0}
.footer-inner{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.footer-links{display:flex;gap:20px;font-size:.9rem;color:var(--mut)}
.footer-links a:hover{color:var(--acc)}
.copy-line{color:var(--mut);font-size:.84rem;margin:0}

.to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:12px;border:1px solid var(--line2);
  background:rgba(10,14,22,.85);color:var(--fg);cursor:pointer;font-size:1rem;opacity:0;pointer-events:none;
  transition:.25s;backdrop-filter:blur(8px);z-index:55}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{border-color:var(--acc);color:var(--acc)}
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);background:rgba(10,16,26,.95);
  border:1px solid var(--acc);color:var(--fg);padding:10px 18px;border-radius:11px;font-size:.86rem;opacity:0;
  pointer-events:none;transition:.25s;z-index:80}
.toast.show{opacity:1;transform:translate(-50%,0)}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:1024px){
  .hero-inner,.two-col{grid-template-columns:1fr}
  .det-grid,.lang-grid,.metrics{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links,.nav-cta{display:none}
  .hamburger{display:block}
  .nav-links.open{display:flex;position:absolute;left:0;right:0;top:68px;flex-direction:column;gap:0;
    background:#06090f;border-bottom:1px solid var(--line);padding:8px 24px 18px;backdrop-filter:blur(14px)}
  .nav-links.open a{padding:13px 0;border-bottom:1px solid var(--line);font-size:1rem}
  .nav-links.open .mobile-only{display:block}
  .nav-links.open .mobile-only.accent{color:var(--acc);font-weight:650;border-bottom:0}
  .nav-inner{position:relative}
}
@media (max-width:760px){
  .split{grid-template-columns:1fr}
  .plus{justify-self:center}
  .rung{width:100%!important}
  .timeline li{grid-template-columns:60px 1fr auto;padding-left:40px}
  .footer-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .det-grid,.lang-grid,.metrics,.feat-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .install-row{width:100%;justify-content:space-between}
  .term{font-size:.72rem;min-height:220px}
  .step-body .inner{padding-left:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}