/* Layout: engineering-drawing grid. A solver viewport anchors the hero; sections read like sheets of a drawing set, each with a title-block label. */
:root{
  --bg:#EFF2F3; --surface:#FFFFFF; --sunk:#E4E9EB;
  --fg:#0C1A24; --muted:#56656F; --line:#CDD5DA; --line-strong:#9FAEB7;
  --accent:#C2410C; --accent-soft:#F6E2D7; --ink-2:#1D3A4C;
  --vp:#0D1720; --vp-2:#15232F; --vp-fg:#DCE6EC; --vp-muted:#7F95A3; --vp-line:#26394A;
  --redact:#0C1A24; --c-ai:#6D4BC4; --c-robot:#0E7C86; --c-logic:#9A6A00; --c-app:#1D3A4C;
  --f-display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --f-body:"IBM Plex Sans","Segoe UI",Roboto,Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --maxw:1240px; --logo-filter:brightness(0); --logo-op:.78;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0A1016; --surface:#111A22; --sunk:#0E161D;
  --fg:#E4EAEE; --muted:#8B9AA5; --line:#22313C; --line-strong:#3A4E5C;
  --accent:#FF7A3D; --accent-soft:#3A2016; --ink-2:#9CC3DA;
  --redact:#C9D3DA; --c-ai:#B39BFF; --c-robot:#4FD1C5; --c-logic:#F2C14E; --c-app:#9CC3DA; --logo-filter:none; --logo-op:.88; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0A1016; --surface:#111A22; --sunk:#0E161D;
  --fg:#E4EAEE; --muted:#8B9AA5; --line:#22313C; --line-strong:#3A4E5C;
  --accent:#FF7A3D; --accent-soft:#3A2016; --ink-2:#9CC3DA;
  --redact:#C9D3DA; --c-ai:#B39BFF; --c-robot:#4FD1C5; --c-logic:#F2C14E; --c-app:#9CC3DA; --logo-filter:none; --logo-op:.88; color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
@media(min-width:720px){.wrap{padding-left:max(32px,env(safe-area-inset-left,0px));padding-right:max(32px,env(safe-area-inset-right,0px))}}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;margin:0;letter-spacing:-0.01em}
p{margin:0}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.label{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* nav */
header.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand b{font-family:var(--f-display);font-stretch:112%;font-weight:700;font-size:17px;letter-spacing:-.01em}
.brand span{font-family:var(--f-mono);font-size:11px;color:var(--muted);border:1px solid var(--line);padding:1px 5px;border-radius:3px}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0}
.nav ul a{text-decoration:none;font-size:14px;color:var(--muted)}
.nav ul a:hover{color:var(--fg)}
.btn{display:inline-flex;align-items:center;gap:8px;font:500 14px/1 var(--f-body);text-decoration:none;padding:12px 18px;border-radius:4px;border:1px solid var(--fg);background:var(--fg);color:var(--bg);cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line-strong)}
.btn.ghost:hover{border-color:var(--fg)}
.nav .btn{padding:9px 14px}
@media(max-width:900px){.nav ul{display:none}}

/* hero */
.hero{padding-block:56px 40px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px;align-items:center}
@media(max-width:980px){.hero .wrap{grid-template-columns:1fr;gap:36px}}
.eyebrow{display:flex;gap:10px;align-items:center;margin-bottom:22px}
.eyebrow i{width:8px;height:8px;background:var(--accent);display:inline-block}
.hero h1{font-size:clamp(40px,6vw,74px);line-height:.98;font-weight:700;font-stretch:118%;letter-spacing:-.025em}
.hero h1 em{font-style:normal;font-stretch:72%;font-weight:600;color:var(--accent)}
.hero .lead{font-size:18px;color:var(--muted);max-width:34em;margin-top:24px}
.hero .lead strong{color:var(--fg);font-weight:500}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:44px;border-top:1px solid var(--line)}
.facts div{padding:14px 12px 0 0}
.facts b{display:block;font-family:var(--f-display);font-stretch:112%;font-size:28px;font-weight:600;line-height:1.1}
.facts span{font-size:13px;color:var(--muted)}

/* viewport */
.viewport{background:var(--vp);color:var(--vp-fg);border-radius:6px;overflow:hidden;border:1px solid var(--vp-line);box-shadow:0 30px 60px -30px rgba(5,15,25,.55)}
.vp-bar{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid var(--vp-line);font:12px/1.4 var(--f-mono);color:var(--vp-muted);flex-wrap:wrap}
.vp-bar b{color:var(--vp-fg);font-weight:500}
.vp-body{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 112px;background:radial-gradient(120% 90% at 40% 30%,var(--vp-2),var(--vp))}
.vp-canvas{position:relative;aspect-ratio:1.45/1;max-width:100%;min-width:0}
.vp-canvas canvas{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair}
.legend{padding:16px 14px 16px 0;font:11px/1 var(--f-mono);color:var(--vp-fg);font-variant-numeric:tabular-nums;display:flex;flex-direction:column}
.legend .t{color:var(--vp-muted);line-height:1.35;margin-bottom:10px}
.legend ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column-reverse;flex:1}
.legend li{flex:1;display:flex;align-items:flex-end;gap:7px;min-height:18px}
.legend li i{width:14px;align-self:stretch;display:block}
.legend li span{transform:translateY(5px)}
.legend .top{padding-left:21px;margin-bottom:4px}
.probe{position:absolute;pointer-events:none;font:11px/1.3 var(--f-mono);background:rgba(8,14,20,.92);color:var(--vp-fg);border:1px solid var(--vp-line);padding:6px 8px;border-radius:3px;white-space:nowrap;transform:translate(12px,-50%)}
.vp-foot{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--vp-line);font:11px/1.4 var(--f-mono);color:var(--vp-muted)}
.vp-foot div{padding:9px 14px;border-right:1px solid var(--vp-line)}
.vp-foot div:last-child{border-right:0}
.vp-foot b{display:block;color:var(--vp-fg);font-weight:500;font-size:12px}
@media(max-width:560px){.vp-body{grid-template-columns:minmax(0,1fr) 88px}.vp-foot{grid-template-columns:repeat(2,minmax(0,1fr))}.vp-foot div:nth-child(2){border-right:0}.vp-foot div:nth-child(-n+2){border-bottom:1px solid var(--vp-line)}}

/* solver strip */
.strip{border-block:1px solid var(--line);background:var(--surface)}
.strip .wrap{display:flex;align-items:center;gap:28px;padding-block:18px;flex-wrap:wrap}
.strip ul{display:flex;flex-wrap:wrap;gap:8px 22px;list-style:none;margin:0;padding:0;font-size:14px}
.strip li{display:flex;align-items:center;gap:8px}
.strip li::before{content:"";width:5px;height:5px;border:1px solid var(--line-strong);transform:rotate(45deg)}

/* sections */
section.sheet{padding-block:96px}
.sheet-head{display:grid;grid-template-columns:200px minmax(0,1fr);gap:32px;margin-bottom:52px;align-items:start}
@media(max-width:820px){.sheet-head{grid-template-columns:1fr;gap:14px}}
.sheet-head .tb{border-top:2px solid var(--fg);padding-top:10px}
.sheet-head .tb .label{display:block}
.sheet-head .tb .mono{font-size:12px;color:var(--muted)}
.sheet-head h2,.sheet-head h1{font-size:clamp(30px,4vw,48px);font-weight:650;font-stretch:110%;line-height:1.05}
.sheet-head p{color:var(--muted);font-size:17px;max-width:40em;margin-top:16px}

/* practices */
.practices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
@media(max-width:820px){.practices{grid-template-columns:1fr}}
.practice{padding:32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;background:var(--surface)}
@media(max-width:560px){.practice{grid-template-columns:1fr;padding:24px}}
.practice svg{width:56px;height:56px;color:var(--ink-2)}
.practice h3{font-size:22px;font-weight:600;font-stretch:105%}
.practice p{color:var(--muted);margin-top:10px}
.practice ul{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:8px;font-size:15px}
.practice li{display:grid;grid-template-columns:14px minmax(0,1fr);gap:10px}
.practice li::before{content:"";width:8px;height:1px;background:var(--accent);margin-top:12px}

/* pipeline */
.pipe{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));position:relative}
@media(max-width:1100px){.pipe{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:40px}}
@media(max-width:640px){.pipe{grid-template-columns:1fr;row-gap:0}}
.stage{padding:0 18px 0 0;position:relative;min-width:0}
.stage .node{display:flex;align-items:center;gap:0;margin-bottom:18px}
.stage .node b{width:18px;height:18px;border:1.5px solid var(--fg);background:var(--bg);flex:none;position:relative}
.stage .node b::after{content:"";position:absolute;inset:4px;background:var(--accent)}
.stage .node::after{content:"";flex:1;height:1.5px;background:repeating-linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 10px)}
.stage:last-child .node::after{background:none}
@media(max-width:640px){.stage{padding:0 0 28px 34px;border-left:1.5px dashed var(--line-strong);margin-left:9px}.stage .node{position:absolute;left:-10px;top:4px}.stage .node::after{display:none}.stage:last-child{border-left-color:transparent}}
.stage h3{font-size:18px;font-weight:600;font-stretch:105%}
.stage dl{margin:12px 0 0;font-size:14px;display:grid;gap:10px}
.stage dt{font:11px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.stage dd{margin:2px 0 0;line-height:1.5}
.rd{background:var(--redact);color:transparent;border-radius:1px;padding:0 .2em;user-select:none;-webkit-user-select:none;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.nda{margin-top:44px;display:flex;gap:14px;align-items:center;padding:14px 18px;border:1px dashed var(--line-strong);border-radius:4px;font-size:14px;color:var(--muted);flex-wrap:wrap}
.nda .rd{display:inline-block;width:46px;height:12px}

/* flows */
.flow-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.flow-tabs button{font:500 14px var(--f-body);padding:9px 14px;border-radius:4px;border:1px solid var(--line-strong);background:transparent;color:var(--muted);cursor:pointer}
.flow-tabs button:hover{color:var(--fg);border-color:var(--fg)}
.flow-tabs button[aria-selected="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.flow-board{border:1px solid var(--line);border-radius:6px;background:var(--surface);overflow:hidden}
.flow-canvas{overflow-x:auto;background-color:var(--sunk);background-image:radial-gradient(var(--line-strong) 1px,transparent 1.2px);background-size:22px 22px;border-bottom:1px solid var(--line)}
#flowSvg{display:block;width:100%;min-width:860px;height:auto}
#flowSvg .edge{fill:none;stroke:var(--line-strong);stroke-width:1.6}
#flowSvg .pkt{fill:var(--accent)}
#flowSvg .elbl{font:11px var(--f-mono);fill:var(--muted)}
#flowSvg .elbg{fill:var(--sunk)}
#flowSvg .nbox{fill:var(--surface);stroke:var(--line-strong);stroke-width:1.2}
#flowSvg .port{fill:var(--surface);stroke:var(--line-strong);stroke-width:1.2}
#flowSvg .ntype{font:500 9.5px var(--f-mono);letter-spacing:.08em}
#flowSvg .ntitle{font:600 13.5px var(--f-body);fill:var(--fg)}
#flowSvg .nsub{font:11.5px var(--f-body);fill:var(--muted)}
.flow-info{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}
@media(max-width:760px){.flow-info{grid-template-columns:1fr}}
.flow-info div{padding:18px 22px;border-right:1px solid var(--line)}
.flow-info div:last-child{border-right:0}
@media(max-width:760px){.flow-info div{border-right:0;border-bottom:1px solid var(--line)}}
.flow-info p{margin-top:6px;font-size:15px}
.flow-hint{font:11px var(--f-mono);color:var(--muted);padding:8px 14px}
.robot-wide{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.robot-wide{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.robot-wide{grid-template-columns:1fr}}
.send-list{margin-top:56px;padding:28px;border:1px solid var(--line);border-radius:6px;background:var(--surface);display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr) auto;gap:24px;align-items:start}
@media(max-width:820px){.send-list{grid-template-columns:1fr}}
.send-list ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.send-list li{display:grid;grid-template-columns:14px minmax(0,1fr);gap:8px}
.send-list li::before{content:"";width:8px;height:1px;background:var(--accent);margin-top:12px}

#flowSvg .ng{cursor:grab}
#flowSvg .ng.drag{cursor:grabbing}
#flowSvg .ng:hover .nbox{stroke:var(--fg)}
/* builder */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.builder{display:grid;grid-template-columns:280px minmax(0,1fr);border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--surface)}
@media(max-width:900px){.builder{grid-template-columns:1fr}}
.palette{border-right:1px solid var(--line);padding:16px;display:grid;gap:16px;align-content:start;max-height:640px;overflow-y:auto}
@media(max-width:900px){.palette{border-right:0;border-bottom:1px solid var(--line);max-height:none}}
.pgroup{display:grid;gap:6px}
.pgroup .label{margin-bottom:2px}
.pblk{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;text-align:left;padding:8px 10px;border:1px solid var(--line);border-radius:4px;background:var(--bg);color:var(--fg);font:14px var(--f-body);cursor:pointer}
.pblk:hover{border-color:var(--fg)}
.pblk small{display:block;color:var(--muted);font-size:12px}
.pblk i{font-style:normal;font:500 16px var(--f-mono);color:var(--muted)}
.bwork{min-width:0;display:flex;flex-direction:column;background-color:var(--sunk);background-image:radial-gradient(var(--line-strong) 1px,transparent 1.2px);background-size:22px 22px}
.btool{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--surface)}
.btool-r{display:flex;gap:8px;flex-wrap:wrap}
.btool select,.reqform input,.reqform select,.reqform textarea{font:14px var(--f-body);color:var(--fg);background:var(--bg);border:1px solid var(--line-strong);border-radius:4px;padding:8px 10px;width:100%}
.btool select{width:auto;max-width:100%}
.btn.sm{padding:8px 12px;font-size:13px}
.chain{list-style:none;margin:0;padding:24px 16px 28px;display:flex;flex-wrap:wrap;gap:28px 34px;align-items:stretch}
.cnode{position:relative;width:210px;max-width:100%;background:var(--surface);border:1.2px solid var(--line-strong);border-radius:6px;padding:10px 12px 12px;display:flex;flex-direction:column;gap:4px}
.cnode.trigger{border-color:var(--accent);border-radius:28px 6px 6px 28px;padding-left:18px}
.cnode.logic{border-style:dashed}
.cnode:not(:last-child)::after{content:"";position:absolute;right:-30px;top:50%;width:24px;height:1.6px;background:var(--line-strong)}
.cnode:not(:last-child)::before{content:"";position:absolute;right:-31px;top:calc(50% - 4px);border:4.5px solid transparent;border-left:6px solid var(--line-strong);border-right:0}
.cnode .ty{font:500 10px var(--f-mono);letter-spacing:.08em}
.cnode b{font-size:14.5px;font-weight:600;line-height:1.3}
.cnode input{font:13px var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--fg);border-radius:3px;padding:5px 7px;margin-top:4px;width:100%}
.cnode .ctl{display:flex;gap:4px;margin-top:6px}
.cnode .ctl button{font:12px var(--f-mono);border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:3px;padding:3px 7px;cursor:pointer}
.cnode .ctl button:hover{color:var(--fg);border-color:var(--fg)}
.cnode .ctl button:disabled{opacity:.35;cursor:default}
.cnode .ctl .del{margin-left:auto}
.cnode.fresh{animation:pop .35s ease-out}
@keyframes pop{from{transform:scale(.94);opacity:.4}to{transform:none;opacity:1}}
.chain-empty{padding:28px 20px;color:var(--muted);font-size:15px}
.reqform{margin-top:28px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px}
@media(max-width:900px){.reqform{grid-template-columns:1fr}}
.rq-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 16px;align-content:start}
@media(max-width:560px){.rq-fields{grid-template-columns:1fr}}
.rq-fields label{display:grid;gap:5px;font-size:13px;color:var(--muted);min-width:0}
.rq-fields .full,.rq-head{grid-column:1/-1}
.rq-head p{color:var(--muted);font-size:14px;margin-top:4px}
.rq-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.rq-status{font-size:14px}
.rq-status.ok{color:var(--c-robot)}
.rq-status.err{color:var(--accent)}
.rq-preview{background:var(--vp);color:var(--vp-fg);border-radius:6px;padding:16px 18px;min-width:0;display:flex;flex-direction:column;gap:10px}
.rq-preview .label{color:var(--vp-muted)}
.rq-preview pre{margin:0;font:12.5px/1.6 var(--f-mono);white-space:pre-wrap;overflow-wrap:anywhere;max-height:360px;overflow:auto}
.rq-preview p{font-size:14px}
.rq-preview .btn.ghost{color:var(--vp-fg);border-color:var(--vp-line);align-self:flex-start}
.inbox{margin-top:28px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--surface)}
.inbox .req{padding:14px 16px;border-bottom:1px solid var(--line);display:grid;gap:4px;font-size:14px}
.inbox .req:last-child{border-bottom:0}
.inbox .req .meta{font:12px var(--f-mono);color:var(--muted)}
.inbox .req .fl{font:12.5px var(--f-mono)}
/* AI section */
.ai{background:var(--vp);color:var(--vp-fg)}
.ai .sheet-head .tb{border-color:var(--vp-fg)}
.ai .sheet-head .label,.ai .sheet-head .mono,.ai .sheet-head p{color:var(--vp-muted)}
.ai-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:48px;align-items:start}
@media(max-width:940px){.ai-grid{grid-template-columns:1fr}}
.ai-points{display:grid;gap:0}
.ai-points div{padding:20px 0;border-top:1px solid var(--vp-line);display:grid;grid-template-columns:150px minmax(0,1fr);gap:16px}
@media(max-width:520px){.ai-points div{grid-template-columns:1fr;gap:4px}}
.ai-points b{font-family:var(--f-display);font-stretch:105%;font-weight:600;font-size:16px}
.ai-points p{color:var(--vp-muted);font-size:15px}
.console{border:1px solid var(--vp-line);border-radius:6px;background:#091118;overflow:hidden;font:13px/1.65 var(--f-mono);min-width:0}
.console .head{display:flex;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--vp-line);color:var(--vp-muted);font-size:12px;gap:10px;flex-wrap:wrap}
.console .head i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#3FB27F;margin-right:6px}
.console .body{padding:16px 18px;overflow-x:auto}
.console .q{color:var(--vp-fg);margin-bottom:12px;padding-left:14px;border-left:2px solid #FF7A3D}
.console .s{color:var(--vp-muted);white-space:pre}
.console .s b{color:#7DD3A8;font-weight:400}
.console table{border-collapse:collapse;margin:10px 0 12px;font-variant-numeric:tabular-nums;color:var(--vp-fg)}
.console td{padding:2px 22px 2px 0}
.console td:last-child{text-align:right}
.console .ok{color:#7DD3A8}
.console .foot{display:flex;gap:18px;flex-wrap:wrap;padding:10px 14px;border-top:1px solid var(--vp-line);color:var(--vp-muted);font-size:11px}
.console .foot b{color:var(--vp-fg);font-weight:500}
.ai .note{font:11px var(--f-mono);color:var(--vp-muted);margin-top:10px}

/* calibration */
.cal-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:48px;align-items:start}
@media(max-width:940px){.cal-grid{grid-template-columns:1fr}}
.chart-card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:20px 20px 12px;min-width:0}
.chart-card .top{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.chart-card .lg{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.chart-card .lg span{display:flex;align-items:center;gap:6px}
.chart-wrap{overflow-x:auto}
#calChart{width:100%;min-width:480px;height:auto;display:block}
#calChart text{font-family:var(--f-mono);font-size:11px;fill:var(--muted)}
.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);margin-top:28px}
.metrics div{padding:16px 16px 0 0}
.metrics b{display:block;font-family:var(--f-display);font-stretch:112%;font-size:34px;font-weight:600;line-height:1.1;font-variant-numeric:tabular-nums}
.metrics .good b{color:var(--accent)}
.metrics span{font-size:13px;color:var(--muted)}
.steps{margin:24px 0 0;padding:0;list-style:none;counter-reset:s;display:grid;gap:14px}
.steps li{counter-increment:s;display:grid;grid-template-columns:28px minmax(0,1fr);gap:12px;font-size:15px}
.steps li::before{content:counter(s);font:500 12px/26px var(--f-mono);width:26px;height:26px;text-align:center;border:1px solid var(--line-strong);border-radius:50%}
.steps b{font-weight:600}

/* work */
.work{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:1060px){.work{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.work{grid-template-columns:1fr}}
.case{background:var(--surface);padding:22px;display:flex;flex-direction:column;gap:14px;min-width:0}
.case .thumb{aspect-ratio:16/10;max-width:100%;background:var(--sunk);border-radius:3px;display:grid;place-items:center;color:var(--ink-2);overflow:hidden}
.case .thumb svg{width:100%;height:100%}
.case .tag{font:11px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.case h3{font-size:17px;font-weight:600;font-stretch:104%;line-height:1.3}
.case p{font-size:14px;color:var(--muted);flex:1}
.case a{font-size:13px;font-weight:500;text-decoration:none;border-bottom:1px solid var(--line-strong);align-self:flex-start;padding-bottom:1px}
.case a:hover{border-color:var(--accent);color:var(--accent)}
.case .na{font-size:13px;color:var(--muted)}

/* industries + people */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px}
@media(max-width:900px){.split{grid-template-columns:1fr}}
.ind{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}
@media(max-width:480px){.ind{grid-template-columns:repeat(2,minmax(0,1fr))}}
.ind div{padding:14px 10px 14px 0;border-bottom:1px solid var(--line);font-size:15px}
.ind span{display:block;font:11px var(--f-mono);color:var(--muted)}
.lead-card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:28px}
.lead-card h3{font-size:24px;font-weight:650;font-stretch:108%}
.lead-card .role{color:var(--muted);font-size:14px;margin-top:4px}
.lead-card p{margin-top:16px;font-size:15px}
.creds{display:grid;gap:8px;margin:18px 0 0;padding:0;list-style:none;font-size:14px}
.creds li{display:flex;gap:10px;align-items:baseline}
.creds li::before{content:"";width:6px;height:6px;background:var(--accent);flex:none;transform:translateY(-1px)}
.track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
@media(max-width:480px){.track{grid-template-columns:repeat(2,minmax(0,1fr))}}
.track b{display:block;font-family:var(--f-display);font-stretch:112%;font-size:24px;font-weight:600;font-variant-numeric:tabular-nums}
.track span{font-size:12px;color:var(--muted);line-height:1.3;display:block}

/* engage */
.engage{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media(max-width:860px){.engage{grid-template-columns:1fr}}
.engage article{border-top:2px solid var(--fg);padding-top:18px}
.engage .label{color:var(--accent)}
.engage h3{font-size:22px;font-weight:600;font-stretch:106%;margin-top:6px}
.engage p{color:var(--muted);margin-top:10px;font-size:15px}
.engage .dur{margin-top:14px;font:12px var(--f-mono);color:var(--fg)}

.robot-spec{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);margin-top:14px}
@media(max-width:520px){.robot-spec{grid-template-columns:1fr}}
.robot-spec div{padding:16px 18px 16px 0;border-bottom:1px solid var(--line)}
.robot-spec b{font-family:var(--f-display);font-stretch:105%;font-weight:600;font-size:17px}
.robot-spec p{color:var(--muted);font-size:14px;margin-top:4px}
.nav ul a[aria-current="page"]{color:var(--fg);box-shadow:inset 0 -2px 0 var(--accent);padding-bottom:4px}
.work-view .work{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:700px){.work-view .work{grid-template-columns:1fr}}
.work-view .case{padding:26px}
.work-view .case .thumb{aspect-ratio:16/9}
.work-view .case h3{font-size:21px}
.work-view .case p{font-size:15px}
.case video{width:100%;height:100%;object-fit:cover;display:block}
/* contact */
.contact{background:var(--surface);border-top:1px solid var(--line)}
.contact .wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:48px;padding-block:88px}
@media(max-width:860px){.contact .wrap{grid-template-columns:1fr}}
.contact h2,.contact h1{font-size:clamp(32px,4.4vw,54px);font-weight:700;font-stretch:114%;line-height:1.02}
.contact p.sub{color:var(--muted);font-size:17px;margin-top:18px;max-width:34em}
.mailbox{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px}
.mailbox .addr{font:500 clamp(18px,2.4vw,24px) var(--f-mono);user-select:all;-webkit-user-select:all;padding:10px 14px;border:1px solid var(--line-strong);border-radius:4px;background:var(--bg);overflow-wrap:anywhere}
.copied{font:12px var(--f-mono);color:var(--accent);min-width:60px}
.office dl{margin:0;display:grid;gap:0;border-top:1px solid var(--line)}
.office div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.office dt{font:11px/1.9 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.office dd{margin:0}
footer{border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:24px;font-size:13px;color:var(--muted)}

@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}
/* multipage */
.page-title{font-size:clamp(36px,5vw,62px)!important}
.contact-page{border-top:0;background:var(--bg)}
.contact-page .wrap{padding-block:72px 96px}
.nav ul a[aria-current="page"]{color:var(--fg);box-shadow:inset 0 -2px 0 var(--accent);padding-bottom:4px}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;font:500 14px var(--f-body);padding:9px 12px;border:1px solid var(--line-strong);border-radius:4px}
.menu summary::-webkit-details-marker{display:none}
.menu nav{position:absolute;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:8px;display:grid;min-width:200px;box-shadow:0 18px 40px -20px rgba(0,0,0,.4)}
.menu nav a{text-decoration:none;padding:9px 10px;border-radius:4px;font-size:15px}
.menu nav a[aria-current="page"]{color:var(--accent)}
.menu nav a:hover{background:var(--sunk)}
@media(max-width:1020px){.nav ul{display:none}.menu{display:block}.nav .cta-top{display:none}}
.nav-r{display:flex;align-items:center;gap:10px}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:900px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.tiles{grid-template-columns:1fr}}
.tile{background:var(--surface);padding:26px;text-decoration:none;display:flex;flex-direction:column;gap:8px;min-height:190px;transition:background .15s}
.tile h3{font-size:21px;font-weight:600;font-stretch:106%}
.tile p{color:var(--muted);font-size:15px;flex:1}
.tile .go{font:500 20px var(--f-mono);color:var(--muted);transition:transform .2s,color .2s}
.tile:hover{background:var(--bg)}
.tile:hover .go{color:var(--accent);transform:translateX(6px)}
.cta-band{background:var(--vp);color:var(--vp-fg)}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;padding-block:64px}
.cta-band .label{color:var(--vp-muted)}
.cta-band h2{font-size:clamp(28px,3.6vw,44px);font-weight:700;font-stretch:112%;margin-top:8px}
.cta-band p{color:var(--vp-muted);margin-top:10px;max-width:36em}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn{background:var(--vp-fg);color:var(--vp);border-color:var(--vp-fg)}
.cta-band .btn.ghost{background:transparent;color:var(--vp-fg);border-color:var(--vp-line)}
.thumb{position:relative}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.thumb iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.thumb .play{position:absolute;left:12px;bottom:12px;z-index:2;display:flex;align-items:center;gap:8px;font:500 13px var(--f-body);padding:8px 12px;border-radius:4px;border:0;background:rgba(8,14,20,.86);color:#fff;cursor:pointer}
.thumb .play span{color:#FF7A3D}
.thumb .play:hover{background:#000}
.rq-fb-actions{display:flex;gap:8px;flex-wrap:wrap}
.rq-preview .btn:not(.ghost){background:var(--vp-fg);color:var(--vp);border-color:var(--vp-fg)}

.models{border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:24px}
.model-list{list-style:none;margin:14px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.model-list li{border:1px solid var(--line);border-radius:4px;padding:12px 14px;background:var(--bg);display:grid;gap:2px}
.model-list b{font-family:var(--f-display);font-stretch:108%;font-weight:600;font-size:18px}
.model-list span{font-size:13px;color:var(--muted)}
.model-list li:last-child{border-style:dashed}
.fine{font-size:13px;color:var(--muted);margin-top:14px}
.ai-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:40px}
@media(max-width:820px){.ai-cols{grid-template-columns:1fr}}
.ai-cols article{border-top:2px solid var(--fg);padding-top:16px}
.ai-cols .label{color:var(--accent)}
.ai-cols h3{font-size:22px;font-weight:600;font-stretch:106%;margin-top:6px}
.ai-cols ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:9px;font-size:15px}
.ai-cols li{display:grid;grid-template-columns:14px minmax(0,1fr);gap:10px}
.ai-cols li::before{content:"";width:8px;height:1px;background:var(--accent);margin-top:12px}
/* references */
.marquee{overflow:hidden;border-block:1px solid var(--line);background:var(--surface);padding-block:22px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee .track{display:flex;gap:18px;width:max-content;animation:slide 38s linear infinite}
.marquee:hover .track{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion: reduce){.marquee .track{animation:none;flex-wrap:wrap;width:auto}.marquee .track [aria-hidden="true"]{display:none}}
.ref-head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.ref-head a{font-size:14px;font-weight:500;text-decoration:none;border-bottom:1px solid var(--line-strong)}
.plate{flex:none;display:flex;align-items:center;gap:14px;padding:14px 22px 14px 16px;border:1px solid var(--line);border-radius:4px;background:var(--bg);min-width:240px;position:relative}
.plate .flag{width:30px;height:20px;border-radius:2px;flex:none;box-shadow:0 0 0 1px var(--line)}
.plate .nm{font-family:var(--f-display);font-weight:700;font-stretch:115%;font-size:19px;letter-spacing:.01em;line-height:1.05;white-space:nowrap}
.plate .sec{display:block;font:11px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:4px;white-space:nowrap}
.plate img.logo{height:34px;width:auto;max-width:150px;object-fit:contain}
.refs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
@media(max-width:900px){.refs{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.refs{grid-template-columns:1fr}}
.ref{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:0 24px 24px;display:flex;flex-direction:column;gap:10px;overflow:hidden}
.ref .pennant{align-self:flex-start;width:56px;height:74px;clip-path:polygon(0 0,100% 0,100% 100%,50% 82%,0 100%);display:grid;place-items:start center;padding-top:14px;margin-bottom:6px}
.ref .pennant svg{width:30px;height:20px;border-radius:2px;box-shadow:0 0 0 1px rgba(255,255,255,.5)}
.ref .logo-slot{height:56px;display:flex;align-items:center}
.ref .logo-slot img{max-height:48px;max-width:180px;object-fit:contain}
.ref h3{font-family:var(--f-display);font-size:26px;font-weight:700;font-stretch:115%;line-height:1.05}
.ref .meta{font:12px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.ref p{color:var(--muted);font-size:15px}
.brand span{display:none}
img.logo{filter:var(--logo-filter);opacity:var(--logo-op);transition:opacity .2s}
.plate{gap:16px;padding:16px 24px;min-width:0}
.plate.has-logo img.logo{height:40px;width:auto;max-width:170px;object-fit:contain}
.plate .pl-meta{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding-left:16px;border-left:1px solid var(--line)}
.plate .pl-meta .sec{margin-top:0}
.plate .flag{width:24px;height:16px}
.plate:hover img.logo{opacity:1}
.ref .logo-slot{height:72px}
.ref .logo-slot img.logo{max-height:56px;max-width:220px;width:auto}
.ref .wordmark{font-family:var(--f-display);font-weight:800;font-stretch:120%;font-size:28px;letter-spacing:.02em;text-transform:uppercase}
.ref h3{font-size:20px!important}
.chain-hint{font-size:13px;color:var(--muted);padding:12px 16px 0}
.cnode input.ttl{font:600 14.5px var(--f-body);border:1px solid transparent;background:transparent;padding:2px 4px;margin:0 0 0 -5px;color:var(--fg)}
.cnode input.ttl:hover{border-color:var(--line)}
.cnode input.ttl:focus{border-color:var(--accent);background:var(--bg)}
.pblk.custom{border-style:dashed}

/* builder: drag to reorder + flow diagram */
.cnode .grip{position:absolute;top:6px;right:8px;cursor:grab;color:var(--muted);font:15px/1 var(--f-mono);padding:2px 4px;border-radius:3px;user-select:none;-webkit-user-select:none}
.cnode .grip:hover{color:var(--fg);background:var(--sunk)}
.cnode.dragging{opacity:.4}
.cnode.drop-l{box-shadow:-6px 0 0 -2px var(--accent)}
.cnode.drop-r{box-shadow:6px 0 0 -2px var(--accent)}
.pblk[draggable="true"]{cursor:grab}
.bdiag{border-top:1px solid var(--line);background:var(--surface)}
.bdiag[hidden]{display:none}
.bdiag-h{display:flex;justify-content:space-between;align-items:center;gap:8px 12px;flex-wrap:wrap;padding:10px 16px}
.bdiag-h small{font:11px var(--f-mono);color:var(--muted);flex:1;min-width:200px}
.bdiag .flow-canvas{border-bottom:0;border-top:1px solid var(--line)}
#chainSvg{display:block;width:100%;min-width:860px;height:auto}
#chainSvg .edge{fill:none;stroke:var(--line-strong);stroke-width:1.6}
#chainSvg .ahead{fill:var(--line-strong)}
#chainSvg .pkt{fill:var(--accent)}
#chainSvg .nbox{fill:var(--surface);stroke:var(--line-strong);stroke-width:1.2}
#chainSvg .port{fill:var(--surface);stroke:var(--line-strong);stroke-width:1.2}
#chainSvg .ntype{font:500 9.5px var(--f-mono);letter-spacing:.08em}
#chainSvg .ntitle{font:600 13.5px var(--f-body);fill:var(--fg)}
#chainSvg .nsub{font:11.5px var(--f-body);fill:var(--muted)}
#chainSvg .nnum{font:500 10px var(--f-mono);fill:var(--muted)}
#chainSvg .ng{cursor:grab}
#chainSvg .ng.drag{cursor:grabbing}
#chainSvg .ng:hover .nbox{stroke:var(--fg)}

/* nav fits 8 items */
.nav ul a{white-space:nowrap}
@media(max-width:1320px){.nav ul{gap:20px}}
@media(max-width:1320px){.nav ul{gap:16px}.nav ul a{font-size:13.5px}}
@media(max-width:1250px){.nav ul{display:none}.menu{display:block}.nav .cta-top{display:none}}