:root{
  --bg:#f7f8fa;--surface:#fff;--surface2:#f1f3f6;--line:#e4e7ec;--line2:#d0d5dd;
  --ink:#0f172a;--ink2:#334155;--muted:#64748b;--faint:#94a3b8;
  --accent:#0f766e;--accent2:#14b8a6;--accentbg:#e6f4f2;--blue:#2563eb;--bluebg:#eaf1fe;
  --amber:#b45309;--amberbg:#fef3e2;--red:#b42318;--redbg:#fdecea;--green:#047857;--greenbg:#e7f6ef;--violet:#6d28d9;--violetbg:#f1ebfd;
  --r:12px;--sh:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.04);--sh2:0 12px 32px -8px rgba(16,24,40,.18);
  font-family:Inter,system-ui,sans-serif;color:var(--ink);font-size:14px;line-height:1.5;
}
*{box-sizing:border-box}body{margin:0;background:var(--bg)}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}h1{font-size:24px;font-weight:650}h2{font-size:17px;font-weight:600}h3{font-size:14px;font-weight:600}
.mono{font-family:'JetBrains Mono',monospace;font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}.small{font-size:12px}.faint{color:var(--faint)}

/* shell */
.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.side{background:var(--surface);border-right:1px solid var(--line);padding:16px 12px;display:flex;flex-direction:column;gap:2px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;padding:4px 10px 18px}
.logo{width:28px;height:28px;border-radius:8px;background:var(--accent);display:grid;place-items:center}
.nav a{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:8px;color:var(--ink2);font-weight:500}
.nav a:hover{background:var(--surface2)}.nav a.on{background:var(--accentbg);color:var(--accent)}
.nav svg{width:17px;height:17px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.navlabel{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);padding:14px 10px 4px;font-weight:600}
.side .bottom{margin-top:auto;border-top:1px solid var(--line);padding-top:10px}
.badge-dot{margin-left:auto;background:var(--accent);color:#fff;font-size:11px;border-radius:99px;padding:0 6px}
.main{min-width:0}
.topbar{display:flex;align-items:center;gap:12px;padding:12px 32px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.8);backdrop-filter:blur(8px);position:sticky;top:0;z-index:5}
.topbar .search{flex:1;max-width:420px}
.page{padding:28px 32px 64px;max-width:1320px}
.ph{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.ph p{margin:4px 0 0;color:var(--muted)}
.menu-btn{display:none}

/* primitives */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);padding:18px}
.card.flat{box-shadow:none}.card h2{margin-bottom:12px}
.ch{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px}.ch h2{margin:0}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-main{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
.row{display:flex;align-items:center;gap:8px}.wrap{flex-wrap:wrap}.between{justify-content:space-between}.col{display:flex;flex-direction:column;gap:8px}.grow{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line2);background:var(--surface);padding:7px 12px;border-radius:8px;font-weight:500;cursor:pointer;white-space:nowrap;box-shadow:var(--sh)}
.btn:hover{background:var(--surface2)}.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.pri{background:var(--accent);border-color:var(--accent);color:#fff}.btn.pri:hover{background:#0d655e}
.btn.ghost{border-color:transparent;box-shadow:none;background:none}.btn.ghost:hover{background:var(--surface2)}
.btn.sm{padding:4px 9px;font-size:12.5px}.btn.lg{padding:11px 18px;font-size:15px}
.btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
input,select,textarea{width:100%;border:1px solid var(--line2);border-radius:8px;padding:8px 10px;background:var(--surface)}
input:focus,select:focus,textarea:focus,.btn:focus-visible,a:focus-visible{outline:2px solid var(--accent2);outline-offset:1px}
textarea{resize:vertical;min-height:80px}
label.f{display:flex;flex-direction:column;gap:5px;font-weight:500;font-size:13px;color:var(--ink2)}
.pill{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:500;padding:2px 9px;border-radius:99px;background:var(--surface2);color:var(--ink2);white-space:nowrap}
.pill.s-in-progress,.pill.blue{background:var(--bluebg);color:var(--blue)}.pill.s-completed,.pill.green{background:var(--greenbg);color:var(--green)}
.pill.s-planning,.pill.s-ready{background:var(--violetbg);color:var(--violet)}.pill.s-waiting,.pill.amber,.pill.s-analysis{background:var(--amberbg);color:var(--amber)}
.pill.s-failed,.pill.red{background:var(--redbg);color:var(--red)}.pill.teal{background:var(--accentbg);color:var(--accent)}
.tag{font-size:11.5px;padding:1px 7px;border-radius:5px;background:var(--surface2);color:var(--muted)}
.bar{height:6px;background:var(--surface2);border-radius:99px;overflow:hidden}.bar>i{display:block;height:100%;background:var(--accent);border-radius:99px}
.kv{display:grid;grid-template-columns:140px 1fr;gap:6px 14px;font-size:13.5px}.kv dt{color:var(--muted)}.kv dd{margin:0}
.lbl{font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);font-weight:600}
.empty{padding:28px;text-align:center;color:var(--muted);border:1px dashed var(--line2);border-radius:var(--r)}
.tabs{scrollbar-width:none;display:flex;gap:2px;border-bottom:1px solid var(--line);margin:18px 0 20px;overflow-x:auto}
.tabs a{padding:9px 14px;font-weight:500;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs a.on{color:var(--accent);border-color:var(--accent)}.tabs a:hover{color:var(--ink)}
.seg{display:inline-flex;background:var(--surface2);border-radius:9px;padding:3px;gap:2px;flex-wrap:wrap}
.seg button{border:0;background:none;padding:5px 11px;border-radius:7px;cursor:pointer;font-weight:500;color:var(--muted)}
.seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--sh)}
table{width:100%;border-collapse:collapse;font-size:13.5px}th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}th{font-weight:600;color:var(--muted);font-size:12px}
hr{border:0;border-top:1px solid var(--line);margin:14px 0}

/* home */
.exp-hero{display:grid;grid-template-columns:1fr auto;gap:18px}
.ring{width:84px;height:84px}
.timeline{position:relative;padding-left:20px}.timeline:before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl{position:relative;padding:4px 0 14px}.tl:before{content:"";position:absolute;left:-19px;top:9px;width:10px;height:10px;border-radius:50%;background:var(--surface);border:2px solid var(--accent)}
.tl.past:before{background:var(--accent)}.tl.conflict:before{border-color:var(--red)}
.timer{display:flex;align-items:center;gap:14px}.timer .clock{font-size:26px;font-weight:600}
.timer.done .clock{color:var(--green)}.timer.paused .clock{color:var(--faint)}
.qa{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.qa button{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:12px;border-radius:10px;border:1px solid var(--line);background:var(--surface);cursor:pointer;text-align:left;font-weight:500}
.qa button:hover{border-color:var(--accent2);background:var(--accentbg)}
.qa svg{width:18px;height:18px;stroke:var(--accent);fill:none;stroke-width:1.8}

/* experiments */
.exp-card{display:flex;flex-direction:column;gap:10px;transition:.15s}.exp-card:hover{border-color:var(--line2);box-shadow:var(--sh2)}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.filters input{max-width:280px}.filters select{width:auto}

/* workspace */
.ws-head{display:flex;gap:20px;justify-content:space-between;flex-wrap:wrap}
.meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:10px;font-size:13px}.meta div span{display:block;color:var(--faint);font-size:11.5px}
.phases{display:flex;gap:4px;margin-top:16px}.phases div{flex:1;text-align:center;font-size:12px;font-weight:500;color:var(--faint);padding-top:8px;border-top:3px solid var(--line)}
.phases .done{color:var(--accent);border-color:var(--accent2)}.phases .cur{color:var(--accent);border-color:var(--accent);font-weight:650}
.wf{display:flex;flex-direction:column;gap:10px}
.step{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden}
.step-h{display:flex;gap:14px;align-items:center;padding:14px 16px;cursor:pointer}
.num{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:600;font-size:13px;border:2px solid var(--line2);flex:none;background:var(--surface)}
.step.completed .num{background:var(--accent);border-color:var(--accent);color:#fff}.step.in_progress{border-color:var(--accent2);box-shadow:0 0 0 3px var(--accentbg)}.step.in_progress .num{border-color:var(--accent);color:var(--accent)}
.step-b{padding:0 16px 16px 58px;display:none}.step.open .step-b{display:block}
.notebook{display:flex;flex-direction:column;gap:0}
.entry{display:grid;grid-template-columns:92px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.entry .t{font-size:12.5px;color:var(--muted)}.entry .t b{display:block;color:var(--ink);font-size:14px}
.et-Observation{background:var(--bluebg);color:var(--blue)}.et-Measurement{background:var(--accentbg);color:var(--accent)}.et-Deviation,.et-Problem{background:var(--redbg);color:var(--red)}.et-Result{background:var(--greenbg);color:var(--green)}.et-Decision{background:var(--violetbg);color:var(--violet)}.et-Procedure,.et-Note{background:var(--surface2)}
.calc-card{border:1px solid var(--line);border-radius:10px;padding:14px;background:var(--surface)}
.working{background:var(--surface2);border-radius:8px;padding:10px 12px;font-family:'JetBrains Mono',monospace;font-size:12.5px;line-height:1.8}
.out{font-size:18px;font-weight:600;color:var(--accent)}

/* ask */
.ask{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}
.chat{display:flex;flex-direction:column;min-height:560px}
.msgs{flex:1;display:flex;flex-direction:column;gap:16px;padding:6px 2px 16px}
.msg.user{align-self:flex-end;background:var(--ink);color:#fff;padding:10px 14px;border-radius:14px 14px 4px 14px;max-width:75%}
.msg.ai{display:flex;gap:12px}.msg.ai .body{flex:1;min-width:0}
.avatar{width:30px;height:30px;border-radius:8px;background:var(--accent);display:grid;place-items:center;flex:none}
.md h2{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);margin:14px 0 4px}.md h2:first-child{margin-top:0}
.md p{margin:4px 0}.md ul{margin:4px 0;padding-left:18px}.md li{margin:2px 0}.md blockquote{margin:0 0 8px;padding:8px 12px;background:var(--amberbg);border-radius:8px;color:#7c4a0a;font-size:13px}
.md code{background:var(--surface2);padding:1px 5px;border-radius:4px;font-size:12px}
.sources{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.src{border:1px solid var(--line);border-radius:9px;padding:8px 10px;background:var(--surface);font-size:12px;max-width:240px;display:block}
.src:hover{border-color:var(--accent2)}.src b{display:block;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.composer{display:flex;gap:8px;border:1px solid var(--line2);border-radius:12px;padding:8px;background:var(--surface)}.composer textarea{border:0;min-height:44px;padding:6px}.composer textarea:focus{outline:0}
.chips{display:flex;gap:6px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:5px 11px;font-size:12.5px;cursor:pointer}.chip:hover{border-color:var(--accent2);color:var(--accent)}
.ctx{position:sticky;top:76px}.ctx dl{display:flex;flex-direction:column;gap:10px;margin:0}.ctx dt{font-size:11.5px;color:var(--faint);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.ctx dd{margin:2px 0 0;font-size:13px}
.ctxbar{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--accentbg);border-radius:10px;margin-bottom:14px;font-size:13px}.ctxbar select{width:auto;flex:1;max-width:380px;background:var(--surface)}
.typing span{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--faint);margin-right:3px;animation:b 1s infinite}.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}
@keyframes b{50%{opacity:.2}}

/* wizard */
.wiz{display:grid;grid-template-columns:220px 1fr;gap:24px}
.wsteps{display:flex;flex-direction:column;gap:4px}.wsteps div{padding:9px 12px;border-radius:8px;color:var(--muted);font-weight:500;display:flex;gap:10px;align-items:center}
.wsteps div.on{background:var(--accentbg);color:var(--accent)}.wsteps div.ok{color:var(--ink2)}.wsteps .n{width:22px;height:22px;border-radius:50%;border:1.5px solid currentColor;display:grid;place-items:center;font-size:11.5px}
.opt{border:1px solid var(--line);border-radius:10px;padding:12px;cursor:pointer;background:var(--surface);text-align:left}.opt.on{border-color:var(--accent);background:var(--accentbg)}

/* flow */
.flow{display:flex;flex-direction:column;align-items:center;gap:0}
.node{width:min(420px,100%);border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--surface);box-shadow:var(--sh)}
.node.completed{border-left:4px solid var(--accent)}.node.in_progress{border-left:4px solid var(--blue)}.node.pending{border-left:4px solid var(--line2)}
.arrow{width:2px;height:22px;background:var(--line2);position:relative}.arrow:after{content:"";position:absolute;bottom:-2px;left:-4px;border:5px solid transparent;border-top-color:var(--line2)}

/* poster */
.poster{min-height:520px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:auto 1fr;gap:14px;font-size:11px}
.poster header{grid-column:1/-1;background:var(--ink);color:#fff;margin:-28px -28px 0;padding:20px 28px;border-radius:6px 6px 0 0}
.poster section{background:var(--surface2);border-radius:6px;padding:10px;overflow:hidden}.poster section h4{color:var(--accent);font-size:11px;text-transform:uppercase;margin-bottom:4px}
[contenteditable]{outline:none;white-space:pre-wrap}[contenteditable]:focus{background:#fffbea;border-radius:4px}

/* overlays */
#toasts{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:50}
.toast{background:var(--ink);color:#fff;padding:12px 16px;border-radius:12px;box-shadow:var(--sh2);max-width:380px;animation:in .2s}
.toast .row{margin-top:10px}.toast .btn{background:rgba(255,255,255,.12);border-color:transparent;color:#fff;box-shadow:none}
@keyframes in{from{transform:translateY(8px);opacity:0}}
#modal{position:fixed;inset:0;background:rgba(15,23,42,.4);display:grid;place-items:center;z-index:40;padding:16px}
#modal[hidden]{display:none}
.dialog{background:var(--surface);border-radius:14px;padding:22px;width:min(560px,100%);max-height:90vh;overflow:auto;box-shadow:var(--sh2)}
.dialog h2{margin-bottom:14px}

/* landing */
.land{background:#fff}
.land nav{display:flex;align-items:center;justify-content:space-between;padding:18px 48px;max-width:1200px;margin:auto}
.land section{padding:80px 48px;max-width:1200px;margin:auto}
.hero{text-align:center;padding-top:60px!important}
.hero h1{font-size:clamp(34px,5.5vw,60px);line-height:1.05;letter-spacing:-.03em;font-weight:700;max-width:850px;margin:18px auto}
.hero p{font-size:18px;color:var(--muted);max-width:680px;margin:0 auto 30px}
.eyebrow{display:inline-block;padding:4px 12px;border-radius:99px;background:var(--accentbg);color:var(--accent);font-weight:600;font-size:13px}
.land h2.big{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.02em;font-weight:650;margin-bottom:12px}
.chain{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap}
.chain span{padding:10px 16px;border-radius:10px;background:var(--surface);border:1px solid var(--line);font-weight:600;box-shadow:var(--sh)}.chain i{color:var(--faint);font-style:normal}
.chain span.k{background:var(--accent);color:#fff;border-color:var(--accent)}
.band{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.price{display:flex;flex-direction:column;gap:10px}.price ul{padding:0;margin:8px 0 16px;list-style:none;display:flex;flex-direction:column;gap:7px}.price li:before{content:"✓ ";color:var(--accent);font-weight:700}
.price.feat{border:2px solid var(--accent);position:relative}.price .amt{font-size:32px;font-weight:700}

@media (max-width:1000px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g-main,.ask,.wiz{grid-template-columns:1fr}.ctx{position:static}}
@media (max-width:760px){
  .app{grid-template-columns:1fr}.side{position:fixed;inset:0 auto 0 0;width:250px;z-index:30;transform:translateX(-100%);transition:.2s}.side.open{transform:none;box-shadow:var(--sh2)}
  .menu-btn{display:inline-flex}.topbar .pill,.topbar .search{display:none}.page{padding:20px 16px 56px}.topbar{padding:10px 16px}
  .g2,.g3,.g4,.qa{grid-template-columns:1fr}.exp-hero{grid-template-columns:1fr}.entry{grid-template-columns:1fr;gap:4px}.step-b{padding-left:16px}
  .land nav,.land section{padding-left:16px;padding-right:16px}.kv{grid-template-columns:1fr}.poster{grid-template-columns:1fr;aspect-ratio:auto}
}
@media print{.side,.topbar,.no-print{display:none!important}.app{display:block}.page{padding:0}}