@font-face{font-family:"Familjen Grotesk";font-weight:400;font-display:swap;src:url(/fonts/familjen-grotesk-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Familjen Grotesk";font-weight:600;font-display:swap;src:url(/fonts/familjen-grotesk-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Familjen Grotesk";font-weight:700;font-display:swap;src:url(/fonts/familjen-grotesk-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:400;font-display:swap;src:url(/fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2")}

:root{
  --ink:#0b1017;
  --slate:#16202b;
  --line:#26343f;
  --signal:#3a8fd9;
  --bright:#7cc4ff;
  --bone:#e4eaf0;
  --dim:#93a3b1;
  --limit:#e3a857;
  --hold:#e0685c;
  --glow:rgba(58,143,217,.32);
  --grid:rgba(124,196,255,.06);
  --sans:"Familjen Grotesk",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
  --gutter:clamp(1rem,4vw,3rem);
  color-scheme:dark light;
}
@media (prefers-color-scheme:light){
  :root:not([data-theme="dark"]){
    --ink:#f1f5f8;--slate:#e2e9ef;--line:#c3d0db;--signal:#1f6fb5;--bright:#1f6fb5;
    --bone:#0f1a24;--dim:#4c5d6c;--limit:#8a5a0d;--hold:#b3392f;--glow:rgba(31,111,181,.16);--grid:rgba(31,111,181,.07);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html{overflow-x:hidden}
body{margin:0;background:var(--ink);color:var(--bone);font:400 1.0625rem/1.55 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--signal);text-underline-offset:.2em}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}
code{font:400 .84em/1.4 var(--mono);color:var(--dim);overflow-wrap:anywhere}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--signal);color:var(--ink);padding:.5rem 1rem;z-index:10}
.skip:focus{left:0}
.wrap{max-width:72rem;margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.sec{padding-top:clamp(4.5rem,11vw,8.5rem)}
.src{margin:.8rem 0 0;font:400 .76rem/1.4 var(--mono);color:var(--dim)}
p{margin:0 0 1rem}
svg{display:block;max-width:100%;height:auto}
.sm{font:400 13px var(--sans);fill:var(--dim)}

.bar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.7rem var(--gutter);background:color-mix(in srgb,var(--ink) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.mark{display:flex;align-items:center;gap:.6rem;color:var(--bone);text-decoration:none;font-weight:700}
.bar nav{display:flex;gap:1.2rem;flex-wrap:wrap}
.bar nav a{color:var(--dim);text-decoration:none;font-size:.95rem}
.bar nav a:hover{color:var(--bone)}

h1,h2,h3{font-weight:700;letter-spacing:-.025em;margin:0}
h2{font-size:clamp(1.8rem,4.2vw,2.8rem);line-height:1.05;margin-bottom:2rem;max-width:22ch}
h3{font-size:1.25rem;margin:3.5rem 0 1rem;letter-spacing:-.01em}

/* hero */
.hero{position:relative;padding-top:clamp(2.5rem,6vw,4.5rem);display:grid;grid-template-columns:minmax(0,1fr);gap:0 3rem;align-items:end}
@media (min-width:60rem){
  .hero{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}
  .hero h1{grid-column:1;grid-row:1 / span 2;margin-bottom:0}
  .hero .sub{grid-column:2;grid-row:1;align-self:end;margin-bottom:1rem}
  .hero .actions{grid-column:2;grid-row:2;margin-bottom:.4rem}
  .hero .relay{grid-column:1 / -1}
}
.hero::before{content:"";position:absolute;inset:0 -50vw auto -50vw;height:900px;pointer-events:none;z-index:-1;
  background:
    radial-gradient(55% 55% at 50% 38%,var(--glow),transparent 72%),
    linear-gradient(var(--grid) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,var(--grid) 1px,transparent 1px) 0 0/48px 48px;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 40%,#000,transparent);
  mask-image:radial-gradient(70% 70% at 50% 40%,#000,transparent)}
h1{font-size:clamp(3rem,9vw,6.4rem);line-height:.92;letter-spacing:-.045em;margin-bottom:1.4rem}
.sub{font-size:clamp(1.05rem,1.7vw,1.3rem);color:var(--dim);margin-bottom:1.6rem}
@media (min-width:60rem){.sub{white-space:nowrap}}
.actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:0}
.btn{display:inline-block;padding:.75rem 1.4rem;border:1px solid var(--line);border-radius:8px;color:var(--bone);text-decoration:none;font-weight:600;background:var(--slate)}
.btn:hover{border-color:var(--signal)}
.btn.primary{background:var(--signal);border-color:var(--signal);color:#06121c}
.btn.primary:hover{filter:brightness(1.12)}

/* relay figure */
.relay{margin:clamp(2rem,5vw,3.5rem) 0 0;padding:0}
.relay svg{width:100%}
.decoy line{stroke:var(--line);stroke-width:1}
.decoy circle{fill:var(--slate);stroke:var(--line)}
.wire{fill:none;stroke:var(--signal);stroke-width:1.5;stroke-dasharray:2 7;opacity:.7;stroke-linejoin:round}
.n{fill:var(--ink);stroke:var(--signal);stroke-width:2;transition:fill .25s,stroke .25s}
.n.lit{fill:var(--signal);stroke:var(--bright)}
.n.end{stroke-width:3}
.n.rdv{stroke-dasharray:4 3}
.arrive{fill:none;stroke:var(--bright);stroke-width:2;opacity:0}
.packet .halo{fill:var(--signal);opacity:.5}
.packet .ring{fill:none;stroke:var(--bright);stroke-width:1.6}
.packet .core{fill:var(--bone)}
.lbl text{font:600 15px var(--sans);fill:var(--bone)}
.lbl .dim{font-weight:400;fill:var(--dim)}
.legend{list-style:none;margin:.5rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.4rem 2rem;color:var(--dim);font-size:.95rem}
.legend li{display:flex;align-items:center;gap:.6rem}
.key{display:inline-block;width:14px;height:14px;flex:none}
.k-ring{border:2px solid var(--bright);border-radius:50%}
.k-core{background:var(--bone);border-radius:3px;width:10px;height:10px;margin:2px}
.k-none{border:2px dashed var(--dim);border-radius:50%}

/* comparison rows */
.rows{list-style:none;margin:0;padding:0}
.row{display:grid;grid-template-columns:11rem minmax(0,1fr) 15rem;align-items:center;gap:1rem 2rem;padding:1.2rem 0;border-top:1px solid var(--line)}
.row:last-child{border-bottom:1px solid var(--line)}
.who{margin:0;font-weight:700}
.row svg{width:100%;max-width:30rem}
.verdict{margin:0;font-size:.98rem}
.verdict.bad{color:var(--hold)}
.verdict.good{color:var(--bright);font-weight:600}
.row.mine{background:linear-gradient(90deg,transparent,var(--glow),transparent)}
.w{stroke:var(--dim);stroke-width:1.5;opacity:.6}
.w.mine{stroke:var(--signal);stroke-dasharray:2 6;opacity:1}
.e{fill:var(--ink);stroke:var(--signal);stroke-width:2.5}
.r{fill:var(--ink);stroke:var(--signal);stroke-width:2}
.hold rect{fill:none;stroke:var(--hold);stroke-width:2}
.hold circle:not(.cl){fill:var(--hold)}
.hold .cl{fill:none;stroke:var(--hold);stroke-width:1.5;stroke-dasharray:4 4}

/* identity panels */
.pair{display:grid;grid-template-columns:repeat(auto-fit,minmax(17rem,1fr));gap:2rem 3rem}
.panel{margin:0;padding:1.2rem 0 0;border-top:1px solid var(--line)}
.panel figcaption{margin-top:.8rem;color:var(--dim);max-width:34ch}
.panel.mine figcaption{color:var(--bone)}
.panel svg{width:100%;max-width:22rem}
.fan line{stroke:var(--hold);stroke-width:2;opacity:.8}
.fan.sep line.a{stroke:var(--signal);stroke-width:2.5;opacity:1}
.fan.sep line.b{stroke:var(--bright);stroke-width:2.5;stroke-dasharray:6 4;opacity:1}
.panel .e{fill:var(--ink)}
.panel .c{fill:var(--slate);stroke:var(--dim);stroke-width:2}
.chip{font:400 12px var(--mono);stroke:var(--ink);stroke-width:7px;paint-order:stroke;stroke-linejoin:round}
.chip.bad{fill:var(--hold)}
.chip.good{fill:var(--bright)}

/* what you need */
.need{display:flex;flex-wrap:wrap;align-items:center;gap:1.5rem 3rem}
.gone{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.6rem}
.gone li{font-size:clamp(1.1rem,2.4vw,1.5rem);font-weight:600;padding:.4rem .9rem;border:1px solid var(--line);border-radius:999px;color:var(--dim)}
.gone s{text-decoration-thickness:2px;text-decoration-color:var(--hold)}
.have{margin:0;font-size:clamp(1.3rem,3vw,2rem);font-weight:700;color:var(--bright);letter-spacing:-.01em}

/* handshake */
.proto{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:1.4rem 1.8rem}
.proto li{display:flex;flex-direction:column}
.tok{font:700 clamp(1.6rem,4.1vw,2.9rem)/1 var(--sans);letter-spacing:-.04em}
.tok.hl{color:var(--bright)}
.g{font-size:.88rem;color:var(--dim);max-width:16ch;margin-top:.35rem}

/* rekey */
.rekey,.vault{margin:0}
.rekey svg{width:100%;max-width:46rem}
.seg.bad{fill:var(--hold);opacity:.85}
.seg.ok{fill:var(--signal)}
.leak{stroke:var(--bone);stroke-width:2;stroke-dasharray:4 4}
.leaktxt{fill:var(--bone);font-weight:600}
.sm.good{fill:var(--bright)}
.sm.bad{fill:var(--hold)}

/* vault */
.vault{display:flex;flex-wrap:wrap;gap:1.5rem 3rem;align-items:center}
.vault svg{width:min(100%,20rem);flex:none}
.vault .dot{fill:var(--signal)}
.vtxt{flex:1 1 16rem}
.big{font:700 clamp(2.6rem,7vw,4.6rem)/1 var(--sans);letter-spacing:-.04em;margin:0 0 .4rem}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin:.6rem 0 0}
.chips span{font:400 .8rem var(--mono);color:var(--dim);border:1px solid var(--line);border-radius:6px;padding:.2rem .5rem}
.vault figcaption{flex-basis:100%;margin:0}

/* platforms */
.plat{list-style:none;margin:0;padding:0}
.plat li{display:grid;grid-template-columns:1.6rem 11rem minmax(0,1fr);align-items:center;gap:.4rem 1rem;padding:1rem 0;border-top:1px solid var(--line)}
.plat li:last-child{border-bottom:1px solid var(--line)}
.plat span:last-child{color:var(--dim)}
.dot{width:14px;height:14px;border-radius:50%;border:2px solid var(--signal);display:inline-block}
.dot.full{background:var(--signal)}
.dot.half{background:linear-gradient(90deg,var(--signal) 50%,transparent 50%)}

/* pulse */
.pulse{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:2.5rem 3rem}
.cap{color:var(--dim);font-size:.9rem;margin:0}
.num{font:700 clamp(3rem,8vw,5.5rem)/1 var(--sans);letter-spacing:-.04em;margin:0;font-variant-numeric:tabular-nums}
.tag{font:700 clamp(1.6rem,3.4vw,2.4rem)/1.1 var(--sans);margin:.2rem 0 0;overflow-wrap:anywhere}
.when{color:var(--dim);margin:.2rem 0 .8rem}
.spark{width:10rem;height:2.5rem;margin-top:.5rem}
.spark polyline{fill:none;stroke:var(--signal);stroke-width:2;vector-effect:non-scaling-stroke}
.assets,.list{list-style:none;margin:0;padding:0}
.assets li,.list li{padding:.45rem 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:1rem;font-size:.95rem}
.sz,.dt{color:var(--dim);font-variant-numeric:tabular-nums;white-space:nowrap}
.note{margin-top:1.5rem;color:var(--dim);font-size:.9rem}
.note.stale{color:var(--limit)}

/* limits: amber means caveat */
.limits h2{color:var(--limit)}
.caveats{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:.8rem 1.5rem}
.caveats li{padding:.4rem 0 .4rem 1rem;border-left:3px solid var(--limit)}
.caveats strong{color:var(--limit)}

/* ledger */
.ledger-wrap summary{cursor:pointer;font-weight:600;padding:1rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--bone)}
.ledger-wrap summary:hover{color:var(--bright)}
.ledger{width:100%;border-collapse:collapse;margin-top:1rem;font-size:.96rem}
.ledger th,.ledger td{text-align:left;vertical-align:top;padding:.8rem 1rem .8rem 0;border-top:1px solid var(--line)}
.ledger thead th{font-size:.82rem;font-weight:600;color:var(--dim);border-top:0}
.ledger tbody th{width:10rem;white-space:nowrap}
.ledger td:last-child{width:15rem}

.foot{margin-top:clamp(4rem,10vw,7rem);padding-top:1.5rem;padding-bottom:3rem;color:var(--dim);font-size:.92rem}
.foot p{border-top:1px solid var(--line);padding-top:1.5rem}

@media (max-width:52rem){
  .row{grid-template-columns:minmax(0,1fr)}
  .plat li{grid-template-columns:1.6rem minmax(0,1fr)}
  .plat span:last-child{grid-column:2}
  .ledger thead{position:absolute;left:-999px}
  .ledger,.ledger tbody,.ledger tr,.ledger th,.ledger td{display:block;width:auto!important}
  .ledger tr{border-top:1px solid var(--line);padding:.8rem 0}
  .ledger th,.ledger td{border:0;padding:0 0 .25rem;white-space:normal!important}
}
@media (max-width:40rem){
  .bar nav{gap:.8rem}.bar nav a{font-size:.88rem}
  .lbl text{font-size:20px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}