@font-face{font-family:'Instrument Sans';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/instrument-sans-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Instrument Sans';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/instrument-sans-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'Instrument Sans';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/instrument-sans-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2')}

:root{
  color-scheme:dark;
  --bg:#0a0b0e; --surface:rgba(12,14,19,.9); --surface-2:rgba(236,238,244,.06); --surface-solid:#0f1116;
  --border:rgba(236,234,228,.13); --border-2:rgba(236,234,228,.24);
  --ink:#eceae4; --ink-2:rgba(236,234,228,.74); --ink-3:rgba(236,234,228,.58);
  --accent:#4d8dff; --accent-ink:#080e1a;
  --s0:#253f6f; --s1:#325aa1; --s2:#3f75d6; --s3:#4d8dff; --s4:#b1cdff;
  --sans:'Instrument Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg)}
body{color:var(--ink);font:16px/1.55 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--accent);color:var(--accent-ink);padding:10px 14px;text-decoration:none}
.skip:focus{left:8px}
.wrap{max-width:1240px;margin:0 auto;padding-inline:clamp(16px,4vw,40px)}
#field{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.layer{position:relative;z-index:1}

/* top bar */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;padding-block:14px}
.bar-in{display:flex;align-items:center;gap:18px;padding:8px 8px 8px 20px;border:1px solid var(--border);background:var(--surface)}
.word{font-weight:600;letter-spacing:-.01em;text-decoration:none;font-size:16px;white-space:nowrap}
.nav{display:flex;gap:4px;margin-left:10px}
.nav a{text-decoration:none;color:var(--ink-2);font-size:14px;padding:10px 12px}
.nav a:hover{color:var(--ink);background:var(--surface-2)}
.bar-r{margin-left:auto;display:flex;gap:8px;align-items:center}
.kbd{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--border);color:var(--ink-3);font-size:13px;background:transparent;cursor:pointer}
.kbd kbd{font-family:var(--mono);font-size:11px;border:1px solid var(--border-2);padding:1px 5px;color:var(--ink-2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;font-weight:500;font-size:15px;text-decoration:none;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .15s ease,box-shadow .2s ease}
.btn.primary{background:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px -8px var(--accent)}
.btn.ghost{border-color:var(--border-2);background:var(--surface)}
.btn.ghost:hover{background:var(--surface-2)}
.btn.sm{min-height:40px;padding:0 16px;font-size:14px}
@media (max-width:860px){ .nav,.kbd{display:none} }

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(28px,4vw,64px);align-items:center;padding-block:clamp(28px,6vw,72px) clamp(32px,5vw,64px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12.5px;color:var(--ink-2);padding:6px 12px 6px 8px;border:1px solid var(--border);background:var(--surface)}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(77,141,255,.2)}
h1{font-weight:500;letter-spacing:-.04em;font-size:clamp(40px,5.3vw,76px);line-height:1;margin:20px 0 0;text-wrap:balance}
h1 .hl{color:var(--accent)}
.sub{font-size:clamp(18px,1.7vw,21px);line-height:1.5;color:var(--ink-2);max-width:40ch;margin:22px 0 0}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* checkout demo */
.demo{border:1px solid var(--border);background:var(--surface);padding:16px;display:grid;gap:14px}
.demo-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:2px 4px}
.live{display:inline-flex;gap:8px;align-items:center;font-family:var(--mono);font-size:12px;color:var(--ink-2)}
.live i{width:7px;height:7px;border-radius:50%;background:var(--s4);animation:blink 1.6s ease-in-out infinite}
@keyframes blink{50%{opacity:.25}}
.replay{border:1px solid var(--border);background:transparent;height:36px;padding:0 12px;font-size:13px;color:var(--ink-2);cursor:pointer}
.replay:hover{color:var(--ink);background:var(--surface-2)}
.chat{height:360px;display:flex;flex-direction:column;justify-content:flex-end;gap:10px;overflow:hidden;padding:6px 4px;-webkit-mask-image:linear-gradient(to bottom,transparent 0,#000 48px);mask-image:linear-gradient(to bottom,transparent 0,#000 48px)}
.msg{max-width:86%;animation:rise .45s cubic-bezier(.2,.8,.2,1) both}
.chat.still .msg{animation:none}
@keyframes rise{from{opacity:0;transform:translateY(10px) scale(.98)}}
.msg.user{align-self:flex-end;background:var(--surface-2);color:var(--ink);border:1px solid var(--border-2);padding:10px 14px;font-size:15px}
.msg.agent{align-self:flex-start;display:grid;gap:8px}
.msg.agent .txt{background:var(--surface-2);border:1px solid var(--border);padding:10px 14px;font-size:15px}
.who{font-family:var(--mono);font-size:11.5px;color:var(--ink-3);display:flex;align-items:center;gap:6px}
.who i{width:12px;height:12px;background:var(--accent)}
.product{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:12px;align-items:center;background:var(--surface-solid);border:1px solid var(--border);border-left:3px solid var(--s0);padding:10px 12px}
.thumb{width:52px;height:52px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(77,141,255,.35),var(--surface-solid));color:var(--ink)}
.thumb svg{width:30px;height:30px}
.product b{display:block;font-weight:500;font-size:15px}
.product small{color:var(--ink-3);font-size:13px}
.price{font-weight:500;font-size:15px;font-variant-numeric:tabular-nums}
.mandate{display:grid;gap:10px;background:var(--surface-solid);border:1px solid var(--border);border-left:3px solid var(--s1);padding:12px 14px;min-width:min(320px,100%)}
.mandate h4{margin:0;font-size:14px;font-weight:500;display:flex;justify-content:space-between;gap:8px}
.mandate h4 span{font-family:var(--mono);font-size:11px;color:var(--s4);font-weight:400}
.mandate dl{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:0;font-size:13.5px}
.mandate dt{color:var(--ink-3)}
.mandate dd{margin:0;text-align:right;font-family:var(--mono);font-size:12.5px}
.passkey{display:flex;align-items:center;justify-content:center;height:38px;background:var(--accent);color:var(--accent-ink);font-size:14px;font-weight:500;transition:all .3s ease}
.mandate.signed .passkey{background:transparent;color:var(--ink);border:1px solid var(--accent)}
.sys{align-self:center;display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--ink-2);padding:6px 12px;border:1px solid var(--border);background:var(--surface)}
.sys i{width:6px;height:6px;border-radius:50%}
.stages{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}
.stage{all:unset;box-sizing:border-box;cursor:pointer;display:grid;gap:6px;padding:8px 8px 10px;width:100%}
.stage:hover{background:var(--surface-2)}
.stage:focus-visible{outline:2px solid var(--accent)}
.bar5{height:4px;background:var(--border);overflow:hidden}
.bar5 span{display:block;height:100%;width:0;background:var(--c);transition:width .6s cubic-bezier(.2,.8,.2,1)}
.stage.done .bar5 span{width:100%}
.stage .nm{font-size:13px;font-weight:500;color:var(--ink-2);line-height:1.2}
.stage.done .nm{color:var(--ink)}
.stage .pr{font-family:var(--mono);font-size:11px;color:var(--ink-3)}
.insight{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:12px 14px;background:rgba(77,141,255,.08);border:1px solid rgba(77,141,255,.35)}
.insight .k{font-family:var(--mono);font-size:11px;color:var(--s4);white-space:nowrap;padding-top:3px}
.insight p{margin:0;font-size:14.5px;line-height:1.45}
.insight a{color:var(--s4);white-space:nowrap}
.demo-foot{font-family:var(--mono);font-size:11px;color:var(--ink-3);padding:0 4px}
@media (max-width:980px){ .hero{grid-template-columns:1fr} }
@media (max-width:560px){
  .chat{height:380px}
  .stages{gap:3px}
  .stage{padding:6px 3px 8px}
  .stage .pr{display:none}
  .stage .nm{font-size:11px}
  .insight{grid-template-columns:1fr;gap:4px}
  .msg{max-width:94%}
}

/* proof + cards */
.proof{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding-bottom:18px}
.pf{padding:18px 20px;border:1px solid var(--border);background:var(--surface)}
.pf .n{display:block;font-weight:500;font-size:40px;letter-spacing:-.035em;line-height:1;margin-bottom:12px;color:var(--ink);font-variant-numeric:lining-nums tabular-nums}
.pf strong{display:block;font-weight:500}
.pf span{color:var(--ink-2);font-size:14px}
.next{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:12px;padding-bottom:12px}
.card{border:1px solid var(--border);background:var(--surface);padding:22px;display:grid;gap:12px;align-content:start;text-decoration:none;transition:transform .25s ease,border-color .25s ease}
a.card:hover{transform:translateY(-3px);border-color:var(--border-2)}
.card .k{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.card h2,.card h3{margin:0;font-weight:500;font-size:22px;letter-spacing:-.02em;line-height:1.15}
.card p{margin:0;color:var(--ink-2);font-size:15px}
.list{list-style:none;margin:0;padding:0}
.list li{padding:10px 0;border-top:1px solid var(--border);font-size:15px}
.reads li{display:grid;gap:2px}
.reads b{font-weight:500}
.reads span{font-size:13.5px;color:var(--ink-3)}
.topics{display:flex;flex-wrap:wrap;gap:6px}
.topics span{font-family:var(--mono);font-size:11.5px;color:var(--ink-2);border:1px solid var(--border-2);padding:3px 8px}
.shot{aspect-ratio:16/9;max-width:100%;overflow:hidden;border:1px solid var(--border)}
.shot img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
a.card:hover .shot img{transform:scale(1.025)}
.go{font-size:14px;font-weight:500;color:var(--ink)}
.go.accent{color:var(--s4)}
.sublink{font-size:14px;color:var(--ink-2)}
@media (max-width:900px){ .proof,.next{grid-template-columns:1fr} }

/* contact */
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:end;border:1px solid var(--border);background:var(--surface);padding:clamp(22px,4vw,40px);margin-block:12px clamp(72px,10vw,120px)}
.contact h2{margin:0;font-weight:500;font-size:clamp(28px,3.4vw,40px);letter-spacing:-.03em;line-height:1.05}
.contact p{margin:12px 0 0;color:var(--ink-2);max-width:48ch}
.mail{display:grid;gap:12px;justify-items:start}
.addr{font-family:var(--mono);font-size:clamp(16px,2vw,20px);color:var(--ink);user-select:all;overflow-wrap:anywhere}
.row{display:flex;gap:10px;flex-wrap:wrap}
@media (max-width:860px){ .contact{grid-template-columns:1fr;align-items:start} }

footer{border-top:1px solid var(--border);padding-block:24px 40px}
footer .wrap{display:flex;gap:20px;justify-content:space-between;flex-wrap:wrap;color:var(--ink-3);font-size:14px}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--ink-2);text-decoration:none}
footer a:hover{color:var(--ink)}

/* palette */
.pal[hidden]{display:none}
.pal{position:fixed;inset:0;z-index:50;display:grid;place-items:start center;padding-top:14vh;background:rgba(5,6,10,.55)}
.pal-box{width:min(560px,calc(100% - 24px));background:var(--surface-solid);border:1px solid var(--border-2);box-shadow:0 30px 80px -20px rgba(0,0,0,.6)}
.pal-box input{width:100%;border:0;border-bottom:1px solid var(--border);background:transparent;color:var(--ink);font:17px/1 var(--sans);padding:18px 20px;outline:none}
.pal-box ul{list-style:none;margin:0;padding:8px;max-height:320px;overflow:auto}
.pal-box li button{all:unset;box-sizing:border-box;cursor:pointer;width:100%;display:flex;justify-content:space-between;gap:12px;padding:12px 14px;font-size:15px}
.pal-box li button:hover,.pal-box li button:focus-visible{background:var(--surface-2)}
.pal-box li small{font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

@media (prefers-reduced-motion:reduce){ *,*::before,*::after{animation:none!important;transition:none!important} }

/* ---------- inner pages ---------- */
body.inner{background-color:var(--bg);background-image:radial-gradient(rgba(236,234,228,.07) 1.1px,transparent 1.3px);background-size:16px 16px;background-attachment:fixed}
.page-head{padding-block:clamp(36px,7vw,80px) clamp(24px,4vw,40px);display:grid;gap:16px;max-width:780px}
.page-head h1{font-size:clamp(38px,5vw,64px)}
.page-head p{margin:0;color:var(--ink-2);font-size:clamp(17px,1.6vw,20px);max-width:52ch}
.nav a[aria-current="page"]{color:var(--ink);background:var(--surface-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.chip{min-height:40px;padding:0 14px;border:1px solid var(--border-2);background:var(--surface);color:var(--ink-2);font-family:var(--mono);font-size:12px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.essays{list-style:none;margin:0 0 20px;padding:0;border:1px solid var(--border);background:var(--surface)}
.essay{border-top:1px solid var(--border)}
.essay:first-child{border-top:0}
.essay a{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 24px;padding:20px 22px;text-decoration:none}
.essay a:hover{background:var(--surface-2)}
.essay a:hover .t{color:var(--s4)}
.essay .t{font-size:20px;font-weight:500;letter-spacing:-.015em;line-height:1.25}
.essay .th{grid-column:1;color:var(--ink-2);font-size:15px;max-width:70ch}
.essay .meta{grid-column:2;grid-row:1 / span 2;align-self:center;font-family:var(--mono);font-size:12px;color:var(--ink-3);white-space:nowrap;text-align:right}
.essay .tg{grid-column:1;display:flex;flex-wrap:wrap;gap:6px}
.essay .tg span{font-family:var(--mono);font-size:11px;color:var(--ink-3);border:1px solid var(--border);padding:2px 7px}
@media (max-width:640px){ .essay a{grid-template-columns:1fr} .essay .meta{grid-column:1;grid-row:auto;text-align:left} }
.subscribe{display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center;justify-content:space-between;border:1px solid var(--border);background:var(--surface);padding:clamp(20px,3vw,32px);margin-bottom:clamp(64px,9vw,110px)}
.subscribe h2{margin:0;font-weight:500;font-size:clamp(22px,2.4vw,28px);letter-spacing:-.02em}
.subscribe p{margin:6px 0 0;color:var(--ink-2)}
.tool{border:1px solid var(--border);background:var(--surface);padding:clamp(20px,3vw,32px);margin-bottom:16px}
.tool-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 32px;align-items:flex-start}
.tool-head h2{margin:6px 0 8px;font-weight:500;font-size:clamp(24px,2.6vw,30px);letter-spacing:-.02em}
.tool-head p{margin:0;color:var(--ink-2);max-width:62ch}
.tool .k{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.tmeta{display:grid;grid-template-columns:auto auto;gap:6px 18px;margin:0;font-size:13px}
.tmeta dt{color:var(--ink-3);font-family:var(--mono);font-size:12px}
.tmeta dd{margin:0}
.tmeta a{color:var(--s4)}
.scorer{display:grid;grid-template-columns:1fr 1fr;gap:24px 32px;margin-top:24px}
.scorer-in{display:flex;flex-direction:column;gap:12px}
.scorer-in label{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.scorer-in textarea{width:100%;min-height:260px;flex:1;background:var(--surface-solid);color:var(--ink);border:1px solid var(--border-2);padding:12px 14px;font:12.5px/1.55 var(--mono);resize:vertical}
.scorer-in textarea:focus{outline:2px solid var(--accent);outline-offset:0}
.scorer-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px}
.scorer-actions .alink,.scorer-actions .mlink{background:none;border:0;padding:0;cursor:pointer;color:var(--s4);font-size:14px;text-decoration:none}
.scorer-actions .mlink{color:var(--ink-2)}
.scorer-out{display:flex;flex-direction:column;gap:18px;border:1px solid var(--border);padding:22px 24px;background:var(--surface-solid)}
.scorer-out[hidden]{display:none}
.score{display:flex;align-items:baseline;gap:10px;font-variant-numeric:tabular-nums}
.score b{font-size:56px;font-weight:500;letter-spacing:-.03em;line-height:1}
.score b.good{color:var(--accent)}
.score span{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.sc-bars{display:flex;flex-direction:column;gap:8px}
.sc-bar{display:grid;grid-template-columns:100px 1fr auto;gap:14px;align-items:center;font-family:var(--mono);font-size:11px;color:var(--ink-2);font-variant-numeric:tabular-nums;text-transform:uppercase}
.sc-bar .cells{display:grid;grid-template-columns:repeat(10,1fr);gap:3px}
.sc-bar .cells i{display:block;height:8px;border:1px solid var(--border-2)}
.sc-bar .cells i.on{background:var(--accent);border-color:var(--accent)}
.sc-fixes{list-style:none;margin:0;padding:16px 0 0;display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.5;color:var(--ink-2);border-top:1px solid var(--border)}
.sc-fixes li b{display:block;font-family:var(--mono);font-size:11px;color:var(--s4);font-weight:400;margin-bottom:3px;text-transform:uppercase}
.sc-note{font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}
@media (max-width:860px){ .scorer{grid-template-columns:1fr} .scorer-in textarea{min-height:180px} }
.links-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:clamp(64px,9vw,110px)}
@media (max-width:760px){ .links-row{grid-template-columns:1fr} }

/* experiments wall */
.wall{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:clamp(64px,9vw,110px)}
.xcard h2{margin:0;font-weight:500;font-size:22px;letter-spacing:-.02em}
.xcard.feature{grid-column:1 / -1;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);column-gap:28px;align-items:center}
.xcard.feature .shot{grid-row:1 / span 5}
.xcard.feature h2{font-size:clamp(26px,3vw,36px);letter-spacing:-.03em}
@media (max-width:760px){ .wall{grid-template-columns:1fr} .xcard.feature{grid-template-columns:1fr} .xcard.feature .shot{grid-row:auto} }