:root{--bg: #0b1220;--bg-alt: #0e1727;--panel: #121d31;--line: #22344f;--grid: #16233a;--text: #eef5fb;--muted: #a9b9cc;--ice: #9fd8f5;--ice-dim: #5f8fae;--ice-ink: #06121e;--err: #ffb4a8;--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--max: 1160px;--gutter: clamp(20px, 5vw, 48px);--space: clamp(64px, 10vw, 128px);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:1.0625rem;line-height:1.6;overflow-x:hidden}h1,h2,h3{font-family:var(--font-serif);line-height:1.1;margin:0;letter-spacing:-.01em}p{margin:0 0 1em}ul,ol{margin:0;padding:0;list-style:none}a{color:var(--ice);text-underline-offset:3px}:focus-visible{outline:3px solid var(--ice);outline-offset:3px;border-radius:2px}.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}.skip{position:absolute;left:-999px;top:8px;background:var(--ice);color:var(--ice-ink);padding:8px 14px;z-index:100}.skip:focus{left:8px}.site-header{position:sticky;top:0;z-index:50;background:#0b1220eb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.site-header__row{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px}.wordmark{font-size:1.35rem;font-weight:700;letter-spacing:-.02em;text-decoration:none;color:var(--text)}.wordmark__os{color:var(--ice);margin-left:1px}.nav ul{display:flex;gap:28px;align-items:center}.nav a{color:var(--muted);text-decoration:none;font-size:.95rem;padding:8px 0}.nav a:hover{color:var(--text)}.nav .nav__gh{color:var(--ice);border:1px solid var(--ice-dim);padding:8px 14px;border-radius:4px}.nav-toggle{display:none;background:none;color:var(--text);border:1px solid var(--line);border-radius:4px;padding:8px 14px;font:inherit;font-size:.95rem;cursor:pointer;min-height:44px}@media (max-width: 820px){.nav-toggle{display:inline-block}.nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px var(--gutter) 20px}.nav[data-open=true]{display:block}.nav ul{flex-direction:column;align-items:stretch;gap:0}.nav a{display:block;padding:14px 0;font-size:1.05rem;border-bottom:1px solid var(--line)}.nav .nav__gh{margin-top:14px;text-align:center}}.hero{padding-block:clamp(48px,8vw,112px);background:linear-gradient(var(--grid) 1px,transparent 1px) 0 0 / 48px 48px,linear-gradient(90deg,var(--grid) 1px,transparent 1px) 0 0 / 48px 48px,var(--bg);border-bottom:1px solid var(--line)}.hero__grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:center}.eyebrow,.kicker{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ice);margin-bottom:20px}h1{font-size:clamp(2.6rem,7vw,5.2rem);margin-bottom:28px}.lede{font-size:clamp(1.1rem,1.6vw,1.3rem);color:var(--muted);max-width:34em;margin-bottom:32px}.fineprint{font-size:.9rem;color:var(--muted);font-family:var(--font-mono);margin:24px 0 0}.hero__art{background:#0e1727cc;border:1px solid var(--line);border-radius:8px;padding:clamp(8px,2vw,20px)}.hero-art{display:block;width:100%;height:auto}.svg-label{font-family:var(--font-mono);font-size:13px;fill:var(--ice)}@media (max-width: 900px){.hero__grid{grid-template-columns:minmax(0,1fr)}}.cta-row{display:flex;flex-wrap:wrap;gap:14px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 24px;border-radius:4px;font-weight:600;text-decoration:none;border:1px solid var(--ice);transition:background .15s,color .15s}.btn--primary{background:var(--ice);color:var(--ice-ink)}.btn--primary:hover{background:#c4e8fa}.btn--ghost{color:var(--ice);background:transparent}.btn--ghost:hover{background:#9fd8f51a}@media (max-width: 480px){.btn{width:100%}}.section{padding-block:var(--space)}.section--alt{background:var(--bg-alt);border-block:1px solid var(--line)}h2{font-size:clamp(1.9rem,4.2vw,3.1rem);max-width:20em;margin-bottom:24px}h3{font-size:1.3rem;margin-bottom:10px}.section__intro{color:var(--muted);max-width:40em;font-size:1.1rem}.status-tag{display:inline-block;border-left:3px solid var(--ice);padding:6px 14px;background:#9fd8f512;margin:0 0 24px;max-width:40em}.cards{display:grid;gap:20px;margin-top:44px}.cards--3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.cards--2{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:16px}@media (max-width: 700px){.cards--2{grid-template-columns:minmax(0,1fr)}}.card{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:28px}.card p{color:var(--muted);margin:0}.card__n,.chip{font-family:var(--font-mono);font-size:.75rem;color:var(--ice);letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:14px}.chip{display:inline-block;border:1px solid var(--ice-dim);border-radius:99px;padding:3px 10px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px;counter-reset:s;border:1px solid var(--line);border-radius:6px;overflow:hidden}.steps li{padding:20px;font-weight:600;display:flex;align-items:center;gap:12px;border-right:1px solid var(--line);background:var(--panel)}.steps li:last-child{border-right:0}.steps li:not(:last-child):after{content:"→";margin-left:auto;color:var(--ice-dim)}.steps__n{font-family:var(--font-mono);color:var(--ice-ink);background:var(--ice);width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:.8rem;flex:none}@media (max-width: 820px){.steps{grid-template-columns:1fr}.steps li{border-right:0;border-bottom:1px solid var(--line)}.steps li:last-child{border-bottom:0}.steps li:not(:last-child):after{content:"↓"}}.example{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(32px,5vw,72px);align-items:start}@media (max-width: 900px){.example{grid-template-columns:minmax(0,1fr)}}.calc{background:var(--panel);border:1px solid var(--ice-dim);border-radius:8px;padding:clamp(20px,4vw,36px)}.calc__badge{font-family:var(--font-mono);font-size:.8rem;color:var(--ice);margin-bottom:8px}.calc__title{font-size:1.8rem;margin-bottom:24px}.calc__fields{align-items:end;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.field label{display:block;font-size:.92rem;margin-bottom:8px}.field input{width:100%;min-height:48px;padding:10px 14px;font:inherit;font-family:var(--font-mono);font-size:1.1rem;color:var(--text);background:var(--bg);border:1px solid var(--ice-dim);border-radius:4px}.field input[aria-invalid=true]{border-color:var(--err)}.field__err{color:var(--err);font-size:.88rem;min-height:1.4em;margin:6px 0 0}.calc__out{margin-top:12px;border-top:1px solid var(--line);padding-top:20px}.calc__out dl{margin:0;display:grid;gap:16px}.calc__out dl>div{display:grid;grid-template-columns:1fr auto;column-gap:16px;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:12px}.calc__out dt{color:var(--muted);font-size:.95rem}.calc__out dd{margin:0;font-family:var(--font-mono);font-size:1.5rem;text-align:right;overflow-wrap:anywhere}.calc__out dd span{font-size:.85rem;color:var(--muted)}.calc__out small{grid-column:1 / -1;color:var(--ice-dim);font-family:var(--font-mono);font-size:.78rem}.calc__out dl>div:last-child dd{color:var(--ice);font-size:1.9rem}.calc__invalid{color:var(--err);margin:0}.calc__note{color:var(--muted);font-size:.9rem;margin:20px 0 0}.lab,.founder{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:start}@media (max-width: 900px){.lab,.founder{grid-template-columns:minmax(0,1fr)}}.plain li,.facts li{padding:12px 0 12px 22px;position:relative;border-bottom:1px solid var(--line);color:var(--muted)}.plain li:before,.facts li:before{content:"";position:absolute;left:0;top:1.15em;width:8px;height:8px;background:var(--ice)}.facts{margin-bottom:24px}.facts li{color:var(--text)}.lab__card .fineprint{margin-top:16px}.final{padding-block:var(--space);background:linear-gradient(180deg,var(--bg-alt),var(--bg));border-top:1px solid var(--line);text-align:center}.final h2{margin-inline:auto}.final .section__intro{margin-inline:auto;margin-bottom:32px}.final .cta-row{justify-content:center}.site-footer{border-top:1px solid var(--line);padding-block:32px;color:var(--muted);font-size:.92rem}.site-footer__row{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}