*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --paper:#0e0f12;--paper-2:#14161a;--ink:#f2f2f2;--ink-2:#b4bac2;--muted:#8b929b;
  --sea:#4aa6e6;--sea-2:#7cc4f2;--line:#24272d;--deep:#0a1622;--card:#16181d;
  --font-display:'Cabinet Grotesk','Switzer',sans-serif;--font-body:'Switzer','Inter',system-ui,sans-serif;
  --text-xs:clamp(.75rem,.72rem + .15vw,.8125rem);--text-sm:clamp(.875rem,.85rem + .15vw,.9375rem);
  --text-base:clamp(1rem,.97rem + .15vw,1.0625rem);--text-lg:clamp(1.125rem,1.05rem + .35vw,1.3rem);
  --text-xl:clamp(1.6rem,1.35rem + 1.1vw,2.25rem);--text-hero:clamp(2.6rem,1.8rem + 3.6vw,4.75rem);
}
html{-webkit-text-size-adjust:none;text-size-adjust:none;-webkit-font-smoothing:antialiased;scroll-behavior:smooth;scroll-padding-top:5rem}
body{font-family:var(--font-body);font-size:var(--text-base);line-height:1.65;color:var(--ink);background:var(--paper)}
img,svg{display:block;max-width:100%}
ul[role=list],ol[role=list]{list-style:none}
input,button{font:inherit;color:inherit}
a{color:var(--sea)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--sea-2);outline-offset:3px}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:#000;padding:.5rem 1rem;z-index:10}
.wrap{width:min(1120px,100% - 2.5rem);margin-inline:auto}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.1;letter-spacing:-.02em;text-wrap:balance}
h2{font-size:var(--text-xl);margin-bottom:1rem}
h3{font-size:var(--text-lg)}
.top{position:sticky;top:0;z-index:5;background:color-mix(in oklab,var(--paper) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top__in{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem 0}
.brand{font-family:var(--font-display);font-size:1.15rem;font-weight:600;color:var(--ink);text-decoration:none;white-space:nowrap}
.brand span{font-weight:500;color:var(--sea)}
.nav{display:flex;gap:1.4rem;font-size:var(--text-sm)}
.nav a{color:var(--ink-2);text-decoration:none;transition:color .15s}.nav a:hover{color:var(--sea)}
.hero{background:radial-gradient(60% 80% at 80% 40%,rgba(56,170,240,.16),transparent 70%),radial-gradient(40% 60% at 10% 0%,rgba(56,170,240,.08),transparent 70%);padding:clamp(3rem,8vw,6.5rem) 0 clamp(2.5rem,6vw,5rem);border-bottom:1px solid var(--line)}
.hero__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.kicker{font-size:var(--text-xs);letter-spacing:.14em;text-transform:uppercase;color:var(--sea);font-weight:600;margin-bottom:1.25rem}
h1{font-size:var(--text-hero);font-weight:500}
h1 em{font-style:normal;background:linear-gradient(180deg,#bae6fd,#7dd3fc 45%,#38bdf8);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin-top:1.5rem;max-width:52ch;color:var(--ink-2);font-size:var(--text-lg);line-height:1.55}
.hero__art svg{width:100%;height:auto}
.section{padding:clamp(3.5rem,8vw,6.5rem) 0;border-bottom:1px solid var(--line)}
.section--tint{background:var(--paper-2)}
.section--ink{background:linear-gradient(180deg,#0c1a28,#0a1420);color:#e8eef3;border-bottom:0}
.section--ink h2,.section--ink h3{color:#fff}
.two{display:grid;grid-template-columns:180px 1fr;gap:2.5rem}
.label{font-size:var(--text-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;padding-top:.6rem}
.label span{display:block;font-family:var(--font-display);font-size:2.2rem;letter-spacing:0;color:var(--sea);font-weight:800;margin-bottom:.25rem}
.section--ink .label{color:#9fb3c4}.section--ink .label span{color:#7fc0ea}
.prose{max-width:68ch}.prose p+p{margin-top:1rem}
.prose-light{max-width:68ch;color:#c9d5df}
.sub{color:var(--ink-2);max-width:62ch;margin-bottom:1.5rem}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2rem}
.facts div{border-top:2px solid var(--sea);padding-top:.9rem}
.facts b{display:block;font-family:var(--font-display);font-size:2.25rem;font-weight:800;color:var(--sea);line-height:1}
.facts span{display:block;margin-top:.5rem;font-size:var(--text-sm);color:var(--ink-2);line-height:1.5}
.builder{background:var(--card);box-shadow:0 0 60px rgba(56,170,240,.08);border:1px solid var(--line);border-radius:10px;padding:clamp(1.25rem,3vw,2rem)}
.builder label{font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.12em;font-weight:600;color:var(--muted)}
#seq{display:block;width:100%;margin-top:.4rem;padding:.75rem .9rem;border:1px solid var(--line);border-radius:6px;background:#0b0c0f;color:#fff;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1.05rem;letter-spacing:.12em;text-transform:uppercase}
.help{font-size:var(--text-xs);color:var(--muted);margin-top:.5rem}
.presets{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.presets button{border:1px solid var(--line);background:#0b0c0f;border-radius:999px;padding:.4rem .85rem;font-size:var(--text-sm);cursor:pointer;transition:border-color .15s,color .15s}
.presets button:hover,.presets button[aria-pressed=true]{border-color:var(--sea);color:var(--sea);box-shadow:0 0 16px rgba(56,170,240,.25)}
.chain{width:100%;height:auto;margin:1.5rem 0 1rem;min-height:90px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;border-top:1px solid var(--line);padding-top:1rem}
.stats dt{font-size:var(--text-xs);color:var(--muted);text-transform:uppercase;letter-spacing:.1em}
.stats dd{font-family:var(--font-display);font-size:1.75rem;font-weight:700;color:var(--sea);font-variant-numeric:tabular-nums}
.timeline{border-left:1px solid var(--line);margin-left:.4rem}
.timeline li{display:grid;grid-template-columns:5.5rem 1fr;gap:1.5rem;padding:0 0 2.25rem 1.5rem;position:relative}
.timeline li::before{content:"";position:absolute;left:-6px;top:.55rem;width:11px;height:11px;border-radius:50%;background:var(--sea);border:2px solid var(--paper);box-shadow:0 0 0 2px var(--sea),0 0 14px rgba(56,170,240,.6)}
.timeline time{font-family:var(--font-display);font-weight:800;font-size:1.6rem;color:var(--sea);line-height:1.2}
.timeline h3{margin-bottom:.4rem}
.timeline p{color:var(--ink-2);max-width:62ch}
.src{font-size:var(--text-xs);margin-top:.5rem}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(5,1fr);gap:1rem;margin-top:.5rem}
.steps li{counter-increment:s;border-top:1px solid #2c4256;padding-top:1rem}
.steps li::before{content:counter(s,decimal-leading-zero);display:block;font-family:var(--font-display);font-size:1.4rem;color:#7fc0ea}
.steps b{display:block;margin:.35rem 0 .3rem;color:#fff;font-weight:600}
.steps span{font-size:var(--text-sm);color:#b9c7d3;line-height:1.5}
.mt{margin-top:3.5rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.cards article{border:1px solid #2c4256;border-radius:10px;padding:1.4rem;background:#12273a}
.cards h3{margin-bottom:.5rem}.cards p{font-size:var(--text-sm);color:#c9d5df}
.cards strong{color:#fff}
.links{margin-top:1rem;list-style:none}.links li{padding:.6rem 0;border-bottom:1px solid var(--line)}
.links a{text-decoration:none;font-weight:500}.links a:hover{text-decoration:underline}
.gloss{display:grid;grid-template-columns:repeat(2,1fr);gap:0 2.5rem}
.gloss div{padding:1rem 0;border-bottom:1px solid var(--line)}
.gloss dt{font-family:var(--font-display);font-size:1.15rem;font-weight:700;color:#fff}
.gloss dd{font-size:var(--text-sm);color:var(--ink-2);margin-top:.25rem}
.foot{background:#08090b;border-top:1px solid var(--line);color:#9fb3c4;padding:3rem 0;font-size:var(--text-sm)}
.foot .brand{color:#fff;margin-bottom:.75rem}.foot .brand span{color:#7fc0ea}
.foot p+p{margin-top:.3rem}
@media (max-width:900px){
  .nav{display:none}
  .hero__grid{grid-template-columns:1fr;gap:2rem}
  .hero__art{max-width:420px}
  .two{grid-template-columns:1fr;gap:1rem}
  .label span{display:inline;font-size:1.1rem;margin-right:.5rem}
  .steps{grid-template-columns:1fr 1fr}
  .cards{grid-template-columns:1fr}
}
@media (max-width:600px){
  .facts{grid-template-columns:1fr}
  .gloss{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .timeline li{grid-template-columns:1fr;gap:.25rem}
  .stats dd{font-size:1.3rem}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}