:root{
  --paper:#F2F1EE; --surface:#FFFFFF; --ink:#1C1C1B; --muted:#6E6A64; --line:#D9D6D0;
  --denim:#34466A; --denim-soft:#E3E8F1; --suede:#8A6A52; --suede-soft:#F1E9E2;
  --alert:#9B3B2E; --alert-soft:#F6E5E1; --ok:#3E6B4F; --ok-soft:#E3EEE6;
  --serif:"Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans:"Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light; box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#171716; --surface:#21211F; --ink:#EDEBE6; --muted:#A39E96; --line:#3A3936;
    --denim:#9FB2D6; --denim-soft:#26303F; --suede:#D2B39A; --suede-soft:#33291F;
    --alert:#E59484; --alert-soft:#3A2420; --ok:#93C2A2; --ok-soft:#1F3127; color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --paper:#171716; --surface:#21211F; --ink:#EDEBE6; --muted:#A39E96; --line:#3A3936;
  --denim:#9FB2D6; --denim-soft:#26303F; --suede:#D2B39A; --suede-soft:#33291F;
  --alert:#E59484; --alert-soft:#3A2420; --ok:#93C2A2; --ok-soft:#1F3127; color-scheme: dark;
}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--denim);outline-offset:2px}
.hidden{display:none !important}
.btn{border:1px solid var(--ink);background:var(--ink);color:var(--paper);border-radius:999px;padding:10px 20px;font-weight:500}
.btn.ghost{background:none;color:var(--ink)}
.btn[disabled]{opacity:.45;cursor:default}
.field{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:10px 18px;min-width:0;flex:1}
.row2{display:flex;gap:10px;flex-wrap:wrap}
.fine{font-size:12.5px;color:var(--muted);margin:8px 0 0}
.err{color:var(--alert);font-size:13px;min-height:18px;margin-top:6px}
.rise{animation:rise .6s ease-out both;animation-delay:calc(var(--d,0) * 70ms)}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Gate */
.gate{min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:1.1fr .9fr}
.gleft{padding:clamp(28px,6vw,80px);display:flex;flex-direction:column;justify-content:center;gap:18px;max-width:720px}
.kick{font-size:13px;color:var(--muted);margin:0}
.ghead{font-family:var(--serif);font-weight:400;font-size:clamp(40px,5.6vw,76px);line-height:1;margin:0;letter-spacing:-0.01em}
.glead{margin:0;max-width:60ch;font-size:16px}
.inside{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:10px}
.inside li{display:grid;grid-template-columns:120px 1fr;gap:12px;font-size:14px}
.inside b{font-weight:600}
.gcard{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px;max-width:520px}
.gcard p{margin:0 0 10px}
.gright{background:var(--ink);color:var(--paper);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.constel{position:relative;width:min(420px,80%);aspect-ratio:1}
.constel .ring{position:absolute;inset:12%;border:1px solid rgba(255,255,255,.18);border-radius:50%}
.constel .hub{position:absolute;inset:38%;border-radius:50%;background:var(--paper);color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;font-family:var(--serif);font-size:clamp(22px,3vw,34px);line-height:1}
.constel .hub small{font-family:var(--sans);font-size:11px;color:var(--muted);margin-top:4px}
.constel .sat{position:absolute;font-family:var(--serif);font-size:clamp(18px,2.2vw,26px);transform:translate(-50%,-50%)}
.constel .sat small{display:block;font-family:var(--sans);font-size:11px;opacity:.6;text-align:center}
.s1{left:50%;top:6%}.s2{left:94%;top:50%}.s3{left:50%;top:94%}.s4{left:6%;top:50%}
.pulse{position:absolute;inset:12%;border-radius:50%;border:1px solid rgba(255,255,255,.5);animation:pulse 4s ease-out infinite}
@keyframes pulse{from{transform:scale(.55);opacity:.8}to{transform:scale(1.08);opacity:0}}

/* Welcome */
.welcome{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:32px 20px}
.hello{max-width:880px;width:100%}
.meet{display:flex;gap:22px;align-items:center}
.av{width:84px;height:84px;border-radius:50%;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:44px;flex:none}
.hi{font-family:var(--serif);font-weight:400;font-size:clamp(44px,6vw,72px);line-height:1;margin:0}
.pron{margin:4px 0 0;color:var(--muted)}
.lead{font-size:17px;max-width:62ch;margin:22px 0}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 26px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px}
.tile b{font-family:var(--serif);font-weight:400;font-size:22px;display:block;margin-bottom:6px}
.tile p{margin:0;font-size:14px}
.ask{font-family:var(--serif);font-size:24px;margin:0 0 10px}
.say{font-family:var(--serif);font-size:clamp(28px,3.4vw,40px);line-height:1.15;margin:18px 0 6px}
.say.sm{font-family:var(--sans);font-size:16px;color:var(--muted);margin:0 0 22px}
.paths{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.path{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:22px;display:flex;flex-direction:column;gap:8px}
.path:hover{border-color:var(--denim)}
.path .pn{font-size:12.5px;color:var(--denim)}
.path b{font-family:var(--serif);font-weight:400;font-size:28px;line-height:1.1}
.path span.d{color:var(--muted);font-size:14px}
.path em{font-style:normal;font-weight:600;margin-top:6px}

/* App shell */
.wrap{max-width:1360px;margin:0 auto;padding:16px 24px 120px}
.appbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-bottom:14px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px}
.brand .av{width:44px;height:44px;font-size:24px}
.brand b{font-family:var(--serif);font-weight:400;font-size:28px;line-height:1}
.brand small{display:block;color:var(--muted);font-size:12.5px}
.tabs{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:var(--surface);flex-wrap:wrap}
.tabs button{border:0;background:none;padding:8px 16px;border-radius:999px;color:var(--muted)}
.tabs button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.notice{margin:12px 0 18px;font-size:13px;color:var(--muted)}

/* Demo */
.stage{display:grid;grid-template-columns:minmax(300px,1.05fr) minmax(260px,0.9fr) minmax(280px,1fr);gap:22px;align-items:start}
.colhead{font-size:13px;color:var(--muted);margin:0 0 10px}
.colhead strong{color:var(--ink);font-weight:600}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:22px;min-height:560px;overflow:hidden;display:flex;flex-direction:column}
.phonebar{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line)}
.brandmark{font-family:var(--serif);font-size:20px;letter-spacing:0.02em}
.phonebar small{color:var(--muted)}
.chat{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1;overflow:auto;max-height:620px}
.msg{max-width:86%;padding:10px 14px;border-radius:16px;line-height:1.45}
.msg.sofia{align-self:flex-end;background:var(--ink);color:var(--paper);border-bottom-right-radius:4px}
.msg.anine,.msg.astrid{align-self:flex-start;background:var(--paper);border-bottom-left-radius:4px}
.msg.sys{align-self:center;font-size:12px;color:var(--muted);background:none;padding:2px}
.who{display:block;font-size:11px;color:var(--muted);margin-bottom:2px}
.msg.sofia .who{color:inherit;opacity:.7}
.why{margin-top:8px;border-top:1px solid var(--line);padding-top:8px;font-size:12.5px;color:var(--muted)}
.why b{color:var(--ink);font-weight:600}
.look{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:8px}
.piece{border:1px solid var(--line);border-radius:10px;padding:10px 8px;background:var(--surface);font-size:12.5px}
.swatch{height:54px;border-radius:6px;margin-bottom:6px}
.chiprow{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.chip{border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:12.5px;background:var(--surface)}
.new{animation:arrive .45s ease-out both}
@keyframes arrive{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.ops{padding:20px;display:flex;flex-direction:column;gap:14px}
.ops h3{font-family:var(--serif);font-weight:400;font-size:28px;margin:0;line-height:1.1}
.ops p{margin:0;color:var(--muted)}
.card{border:1px solid var(--line);border-radius:14px;padding:14px 16px;background:var(--paper)}
.card.alert{border-color:var(--alert);background:var(--alert-soft)}
.card.ok{border-color:var(--ok);background:var(--ok-soft)}
.card h4{margin:0 0 6px;font-size:14px;font-weight:600}
.metric{font-family:var(--serif);font-size:44px;line-height:1}
.metric small{font-family:var(--sans);font-size:13px;color:var(--muted);margin-left:6px}
.bars{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.bar{display:grid;grid-template-columns:120px 1fr 44px;gap:8px;align-items:center;font-size:12.5px}
.bar span.track{height:8px;background:var(--line);border-radius:4px;overflow:hidden}
.bar span.fill{display:block;height:100%;background:var(--denim);border-radius:4px}
.approve{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.who-approves{font-size:12.5px;color:var(--muted)}
.river{position:relative;border-left:1px solid var(--line);padding-left:18px;min-height:560px}
.river::before{content:"";position:absolute;left:-1px;top:0;width:1px;height:100%;background:linear-gradient(var(--denim),transparent 70%)}
.layerlabel{font-family:var(--serif);font-size:24px;margin:0 0 4px;line-height:1.1}
.layersub{font-size:12.5px;color:var(--muted);margin:0 0 16px}
.events{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.ev{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.ev::before{content:"";position:absolute;left:-24px;top:16px;width:11px;height:11px;border-radius:50%;background:var(--paper);border:2px solid var(--denim)}
.ev.fresh{border-color:var(--denim)}
.ev.fresh::before{background:var(--denim)}
.ev .t{font-weight:600;font-size:13.5px}
.ev .d{font-size:12.5px;color:var(--muted)}
.ev .by{font-size:11.5px;color:var(--denim);margin-top:4px}
.agents{display:flex;flex-direction:column;gap:12px}
.agent{border:1px solid var(--line);border-radius:16px;padding:14px 16px;background:var(--surface);transition:border-color .3s, box-shadow .3s}
.agent.active{border-color:var(--denim);box-shadow:0 0 0 3px var(--denim-soft)}
.agent.waiting{border-color:var(--suede);box-shadow:0 0 0 3px var(--suede-soft)}
.agent .top{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.agent .name{font-family:var(--serif);font-size:30px;line-height:1}
.state{font-size:12px;border-radius:999px;padding:3px 10px;background:var(--paper);color:var(--muted);white-space:nowrap}
.agent.active .state{background:var(--denim-soft);color:var(--denim)}
.agent.waiting .state{background:var(--suede-soft);color:var(--suede)}
.agent .purpose{font-size:12.5px;color:var(--muted);margin:4px 0 8px}
.agent .now{font-size:13.5px}
.controls{position:fixed;left:0;right:0;bottom:0;z-index:5;background:var(--surface);border-top:1px solid var(--line);padding:12px 24px calc(12px + env(safe-area-inset-bottom,0px))}
.controls .inner{max-width:1360px;margin:0 auto;display:flex;align-items:center;gap:18px}
.caption{flex:1;min-width:0}
.caption .n{font-size:12px;color:var(--muted)}
.caption .c{font-family:var(--serif);font-size:22px;line-height:1.15}
.dots{display:flex;gap:6px}
.dot{width:26px;height:4px;border-radius:2px;background:var(--line);border:0;padding:0}
.dot.on{background:var(--ink)}

/* Live */
.signout{font-size:13px;color:var(--muted)}
.paths.three{grid-template-columns:repeat(3,1fr)}
.mkt{display:inline-flex;margin-left:10px;border:1px solid var(--line);border-radius:999px;padding:2px;background:var(--surface);vertical-align:middle}
.mkt button{border:0;background:none;padding:3px 10px;border-radius:999px;font-size:12px;color:var(--muted)}
.mkt button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
#lchat .msg{white-space:pre-line}
.lchips{padding:0 18px}
.lchips .chip{cursor:pointer;text-align:left}
.liveform{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--line);margin-top:10px}
.approvals{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.approvals h4{margin:0}
.approve.done .btn{background:var(--ok);border-color:var(--ok)}

/* Storyboard */
.board{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.frame{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px;display:flex;flex-direction:column;gap:10px}
.frame .num{font-family:var(--serif);font-size:40px;line-height:1;color:var(--denim)}
.frame h3{margin:0;font-family:var(--serif);font-weight:400;font-size:26px;line-height:1.1}
.frame dl{margin:0;display:grid;gap:8px}
.frame dt{font-size:12px;color:var(--muted)}
.frame dd{margin:0;font-size:14px}
.frame .sayq{font-family:var(--serif);font-size:18px;line-height:1.35;font-style:italic}
.boardintro{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-bottom:24px}
.boardintro .card{background:var(--surface)}
.agentname{font-family:var(--serif);font-size:28px;line-height:1}

/* Ask */
.askwrap{display:grid;grid-template-columns:300px 1fr;gap:24px;align-items:start}
.topics{display:flex;flex-direction:column;gap:16px;position:sticky;top:12px}
.topic b{display:block;font-size:13px;color:var(--muted);font-weight:600;margin-bottom:6px}
.topic button{display:block;width:100%;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px 12px;margin-bottom:6px;font-size:13.5px}
.topic button:hover{border-color:var(--denim)}
.rlog{display:flex;flex-direction:column;gap:16px;min-height:50vh}
.rintro h2{font-family:var(--serif);font-weight:400;font-size:40px;line-height:1.05;margin:0 0 10px}
.rintro p{max-width:64ch;margin:0 0 8px}
.qa{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px}
.qa .q{font-family:var(--serif);font-size:24px;line-height:1.2;margin:0 0 10px}
.qa .a{white-space:pre-line;margin:0;max-width:72ch}
.qa .src{font-size:12.5px;color:var(--muted);margin:12px 0 6px}
.cites{display:flex;gap:6px;flex-wrap:wrap}
.cite{font-size:12px;border-radius:999px;padding:3px 10px;background:var(--denim-soft);color:var(--denim)}
.askform{position:sticky;bottom:0;background:var(--paper);padding:14px 0 calc(14px + env(safe-area-inset-bottom,0px));display:flex;gap:10px}

@media (max-width:1080px){
  .stage{grid-template-columns:1fr 1fr}
  .agentscol{grid-column:1 / -1}
  .agents{display:grid;grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .gate{grid-template-columns:1fr}
  .gright{min-height:320px}
  .tiles,.paths,.paths.three{grid-template-columns:1fr}
  .askwrap{grid-template-columns:1fr}
  .topics{position:static}
}
@media (max-width:700px){
  .wrap{padding:12px 16px 150px}
  .stage{grid-template-columns:1fr}
  .river{border-left:0;padding-left:0;min-height:0}
  .river::before,.ev::before{display:none}
  .agents{grid-template-columns:1fr}
  .panel{min-height:0}
  .controls .inner{flex-wrap:wrap}
  .dots{display:none}
  .inside li{grid-template-columns:1fr;gap:2px}
}
@media (prefers-reduced-motion: reduce){
  .new,.rise,.pulse{animation:none}
  .agent{transition:none}
}