:root{--bg:#ffffff;--fg:#1f1d24;--muted:#6b6676;--line:#e6e2ee;--card:#f7f5fb;--accent:#855DCD;--accent-ink:#ffffff;--code-bg:#17151c;--code-fg:#ece8f5;--ok:#2f8f5b;--warn:#b7791f}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#121016;--fg:#ece8f5;--muted:#a49db3;--line:#2a2633;--card:#1b1822;--accent:#A88BE0;--accent-ink:#121016;--code-bg:#0b0a0e;--code-fg:#ece8f5;--ok:#5cc28a;--warn:#e0b04f}}
[data-theme=dark]{--bg:#121016;--fg:#ece8f5;--muted:#a49db3;--line:#2a2633;--card:#1b1822;--accent:#A88BE0;--accent-ink:#121016;--code-bg:#0b0a0e;--code-fg:#ece8f5;--ok:#5cc28a;--warn:#e0b04f}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
main,header,footer{max-width:44rem;margin:0 auto;padding:0 16px}
a{color:var(--accent)}
h1,h2,h3{line-height:1.25}
pre{background:var(--code-bg);color:var(--code-fg);padding:12px 14px;border-radius:8px;overflow-x:auto;font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
svg,img{max-width:100%;height:auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
.muted{color:var(--muted)}
nav.toc a[aria-current=true]{font-weight:600}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
:root{--paper-ink:#1c1825;--paper-line:#b3adbd;--paper-muted:#6b6578;--ink:#1c1825;--band:#5B3BB0;--band-ink:#ffffff;--band-soft:#e7deff;--paper:#fffefa;--gold:#ffc94d;--chat:#17131f;--chat-2:#221c2d;--chat-ink:#ece7f7;--chat-muted:#b9afcf;--soft:#e6e1f0}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--ink:#ece8f5;--band:#3b2675;--paper:#f6f3ea;--soft:#2a2633}}
[data-theme=dark]{--ink:#ece8f5;--band:#3b2675;--paper:#f6f3ea;--soft:#2a2633}
header.top{max-width:70rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:24px 16px}
header.top nav{display:flex;gap:20px;flex-wrap:wrap;font-size:15px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--fg);text-decoration:none}
.mark{width:26px;height:26px;border-radius:8px;background:var(--accent);display:inline-block}
main.wide,footer.wide{max-width:70rem}
h1.hero{font-size:clamp(40px,6.4vw,64px);line-height:1.02;letter-spacing:-.025em;margin:0}
h1.hero em{font-style:normal;color:var(--accent)}
h2.big{font-size:clamp(30px,4vw,44px);line-height:1.05;letter-spacing:-.02em;margin:0}
.split{display:flex;flex-wrap:wrap;gap:48px;align-items:center}
.split>*{flex:1 1 400px;min-width:0}
.lede{font-size:20px;color:var(--muted);margin:20px 0 28px}
.prompt{display:flex;border:1.5px solid var(--fg);border-radius:14px;background:var(--bg);overflow:hidden;max-width:36rem}
.prompt code{flex:1 1 auto;min-width:0;padding:15px 16px;font-size:15px;overflow-x:auto;white-space:nowrap}
.prompt button,.btn{border:0;background:var(--fg);color:var(--bg);font:600 15px system-ui,sans-serif;padding:0 20px;min-height:48px;min-width:88px;cursor:pointer}
.chat{background:var(--chat);color:var(--chat-ink);border-radius:20px;padding:20px;display:flex;flex-direction:column;gap:12px;font-size:15px}
.chat .me{align-self:flex-end;background:var(--accent);color:var(--accent-ink);padding:9px 13px;border-radius:14px 14px 4px 14px;max-width:85%}
.chat pre{background:var(--chat-2);color:var(--chat-muted);margin:0;font-size:13px}
.chat .turn{border:1px solid var(--accent);border-radius:12px;padding:10px 13px}
.band{background:var(--band);color:var(--band-ink);border-radius:28px;padding:48px 32px;margin:72px 0}
.band a{color:var(--gold)}
.tips{list-style:none;padding:0;margin:24px 0;display:flex;flex-direction:column;gap:16px;counter-reset:t}
.tips li{display:flex;gap:14px;counter-increment:t}
.tips li::before{content:counter(t);flex:0 0 30px;height:30px;border-radius:50%;background:var(--band-ink);color:var(--band);display:flex;align-items:center;justify-content:center;font:700 14px ui-monospace,monospace}
.tips span{color:var(--band-soft);display:block}
.pill{display:inline-block;background:var(--gold);color:var(--paper-ink);border-radius:999px;padding:13px 20px;font-weight:700;text-decoration:none;min-height:44px;box-sizing:border-box}
.band .pill{color:var(--paper-ink)}
.receipt{background:var(--paper);color:var(--paper-ink);padding:28px 24px;font:15px/1.9 ui-monospace,SFMono-Regular,Menlo,monospace;max-width:28rem;box-shadow:0 30px 60px -20px rgba(20,8,50,.55)}
.receipt .row{display:flex;gap:8px}.receipt .row i{flex:1 1 auto;border-bottom:1.5px dotted var(--paper-line);margin-bottom:8px}
.receipt hr{border:0;border-top:1.5px dashed var(--paper-ink);margin:12px 0}
.receipt .total{display:flex;justify-content:space-between;font-size:20px;font-weight:700}
.receipt small{display:block;text-align:center;color:var(--paper-muted);font-size:12px;margin-top:10px}
.steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.steps label{display:flex;gap:14px;align-items:center;background:var(--bg);border:1px solid var(--soft);border-radius:14px;padding:12px 16px;cursor:pointer;min-height:44px}
.steps input{width:22px;height:22px;accent-color:var(--accent);flex:0 0 auto}
.steps b{display:block;font-size:17px}.steps code{font-size:14px;color:var(--muted)}
.steps .t{margin-left:auto;font:13px ui-monospace,monospace;color:var(--muted);flex:0 0 auto}
.steps input:checked+span b{opacity:.45;text-decoration:line-through}
.bar{height:8px;background:var(--soft);border-radius:4px;max-width:16rem}.bar i{display:block;height:8px;border-radius:4px;background:var(--accent);width:0}
.stops{list-style:none;padding:28px;margin:24px 0;background:var(--card);border-radius:24px;display:flex;flex-wrap:wrap;gap:14px;counter-reset:s}
.stops li{flex:1 1 160px;min-width:0;counter-increment:s}
.stops li::before{content:counter(s);width:40px;height:40px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:10px}
.stops li.net::before{background:var(--fg);color:var(--bg)}
.stops b{display:block;font-size:19px}.stops span{color:var(--muted);font-size:15px}
.tbd{background:var(--gold);color:var(--paper-ink);padding:0 4px;border-radius:4px}
footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--muted);padding:24px 16px 48px;border-top:1px solid var(--line);margin-top:80px}
.replay{margin:-8px 0 16px;border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:8px;padding:6px 12px;min-height:36px;cursor:pointer}
.stops li{transition:transform .3s,opacity .3s}
.stops.playable li:not(.lit){opacity:.55}
.stops li.lit{opacity:1;transform:translateY(-4px)}
#arch{color:var(--muted);margin:16px 0 8px}
#arch .box{fill:var(--card);stroke:currentColor;stroke-width:1.5}
#arch text{fill:var(--fg);font:14px system-ui,sans-serif}
#arch .sub{fill:var(--muted);font-size:12px}
#arch .link{stroke:currentColor;stroke-width:2;fill:none}
#arch[data-on=compute] .g-compute .box,#arch[data-on=node] .g-node .box,#arch[data-on=client] .g-client .box{stroke:var(--accent);stroke-width:3}
#arch[data-on=node] .g-gossip .link,#arch[data-on=client] .g-tunnel .link,#arch[data-on=compute] .g-tunnel .link{stroke:var(--accent)}
.keys{color:var(--muted)}.keys .box{fill:var(--card);stroke:currentColor;stroke-width:1.5}.keys text{fill:var(--fg);font:14px system-ui,sans-serif}.keys .sub{fill:var(--muted);font-size:12px}.keys .link{stroke:currentColor;stroke-width:2;fill:none}.keys .hot{stroke:var(--accent)}
.chat .replay{margin:-6px 0 0;align-self:flex-start;background:transparent;color:var(--chat-muted);border-color:var(--chat-2)}
@media (max-width:520px){.prompt code{white-space:normal;overflow-wrap:anywhere}}
.kicker{font:600 13px/1 ui-monospace,monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin:0 0 12px}
.band .kicker{color:var(--gold)}
.band-lede{font-size:19px;color:var(--band-soft);max-width:30rem;margin:16px 0 26px}
.big-pill{font-size:19px;padding:16px 26px}
.fine{font-size:14px;color:var(--band-soft);margin-top:16px;max-width:30rem}
ol.you{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;counter-reset:y}
ol.you li{counter-increment:y;display:flex;gap:16px;align-items:center;background:var(--card);border-radius:16px;padding:16px 18px}
ol.you li::before{content:counter(y);flex:0 0 40px;height:40px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
ol.you b{display:block;font-size:19px}ol.you span{color:var(--muted)}
.agent-does{margin-top:16px;border:1px solid var(--line);border-radius:14px;padding:12px 16px}
.agent-does summary{cursor:pointer;font-weight:600;min-height:28px}
#wallet{padding-top:88px}
.facts{list-style:none;padding:0;margin:24px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
.facts b{display:block;font-size:18px}.facts span{color:var(--muted)}
.signflow{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px}
.signflow ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.signflow li{display:flex;flex-direction:column;gap:6px;transition:opacity .4s,transform .4s}
.signflow.playing li:not(.on){opacity:.25}
.signflow li.on{transform:translateX(6px)}
.sf-term{font:14px ui-monospace,monospace;background:var(--code-bg);color:var(--code-fg);border-radius:10px;padding:10px 12px}
.sf-term.ok{color:var(--ok)}
.sf-pop{display:grid;grid-template-columns:1fr auto;gap:2px 12px;align-items:center;background:var(--bg);border:1.5px solid var(--accent);border-radius:14px;padding:12px 14px;box-shadow:0 10px 24px -14px rgba(60,30,120,.5)}
.sf-pop b{grid-column:1}.sf-pop em{grid-column:1;font-style:normal;color:var(--muted);font-size:14px}
.sf-pop i{grid-column:2;grid-row:1/3;font-style:normal;background:var(--accent);color:var(--accent-ink);border-radius:999px;padding:8px 14px;font-weight:600;font-size:14px}
.signflow li.on .sf-pop i{animation:tap .5s ease 1s}
@keyframes tap{50%{transform:scale(.9)}}
.sf-cap{font-size:14px;color:var(--muted)}
.wins{list-style:none;padding:0;margin:28px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.wins>li{min-width:0;background:var(--card);border:1.5px solid var(--accent);border-radius:24px;padding:26px 24px}
.wins h3{font-size:clamp(21px,2vw,24px);letter-spacing:-.01em;margin:0 0 18px}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.vs p{margin:0;min-width:0;border-radius:14px;padding:10px 12px;background:var(--bg);border:1px solid var(--line)}
.vs small{display:block;font-size:13px;color:var(--muted)}
.vs b{display:block;white-space:nowrap;font:700 clamp(20px,1.9vw,26px)/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);letter-spacing:-.02em}
.vs .fcx{border-color:var(--accent)}.vs .fcx b{color:var(--accent)}
.wins>li>p:last-child{margin:0;color:var(--muted)}
#why{padding-top:48px}
.small{font-size:14px}
.under{font-size:15px;color:var(--muted);margin:14px 0 0}
.again{margin-top:28px}.again p{margin:0 0 10px}
#node{padding-top:72px}
#node pre{margin:0}
h3.mid{font-size:24px;margin:56px 0 0}
.vouch{display:flex;flex-wrap:wrap;gap:16px 24px;align-items:center;justify-content:space-between;margin-top:40px;background:var(--card);border:1.5px solid var(--accent);border-radius:20px;padding:22px 24px}
.vouch h3{margin:0 0 4px;font-size:22px}.vouch p{margin:0;color:var(--muted)}
.vouch .pill{background:var(--accent);color:var(--accent-ink)}
.fixed{margin-top:16px;border:1px dashed var(--line);border-radius:16px;padding:14px 18px;font-size:15px}
.fixed b{font:600 13px/1 ui-monospace,monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.fixed ul{margin:10px 0 0;padding-left:20px;color:var(--muted);display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:4px 28px}
.facts code,.facts [data-num]{white-space:nowrap}

.prompt code{white-space:normal;overflow-wrap:anywhere}
#you{padding-top:72px}
.more{margin:20px 0 0}
#vouch{padding-top:88px}
.vouch-box{background:var(--card);border:2px solid var(--accent);border-radius:28px;padding:36px 28px}
.vouch-box .pill{background:var(--accent);color:var(--accent-ink);margin-top:20px}
.vouch-box ol.you li{background:var(--bg)}
.refcode{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin-top:16px;background:rgba(0,0,0,.18);border:1px solid var(--band-soft);border-radius:12px;padding:10px 12px;font-size:15px;max-width:30rem}
.refcode a{color:var(--gold);font-weight:600}.refcode code{color:var(--band-ink);font-size:15px}
.refcode button{margin-left:auto;border:0;border-radius:8px;background:var(--gold);color:var(--paper-ink);font:600 14px system-ui,sans-serif;padding:0 14px;min-height:36px;cursor:pointer}