:root{--ink:#14233c;--muted:#667085;--paper:#f4f6fb;--panel:#fff;--line:#dbe2ed;--accent:#4255d8;--accent-soft:#eef0ff;--success:#087d5c;--warning:#b06a00;color:var(--ink);background:var(--paper);font-family:Inter,ui-sans-serif,system-ui,sans-serif}*{box-sizing:border-box}body{min-height:100vh;margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer}.shell{grid-template-columns:250px 1fr;min-height:100vh;display:grid}.sidebar{color:#fff;background:#111a31;padding:28px 20px}.brand{margin-bottom:28px;font-size:1.35rem;font-weight:750}.brand small{color:#aab7de;margin-top:4px;font-size:.72rem;display:block}.nav{gap:6px;display:grid}.nav a{color:#d9e0f6;border-radius:9px;padding:10px 12px;text-decoration:none}.nav a:hover{color:#fff;background:#253154}.content{width:100%;max-width:1280px;padding:40px}.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;font-weight:750}h1{letter-spacing:-.04em;margin:7px 0 8px;font-size:clamp(2rem,4vw,3.5rem)}.lead{color:var(--muted);max-width:760px;margin-bottom:28px}.grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;display:grid}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 8px 28px #14233c0d}.card h2,.card h3{margin-top:0}.metric{margin:8px 0;font-size:2rem;font-weight:760}.muted{color:var(--muted)}.badge{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:5px 9px;font-size:.78rem;font-weight:700;display:inline-flex}.form{gap:14px;display:grid}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}label{color:var(--muted);gap:6px;font-size:.82rem;font-weight:650;display:grid}input,select,textarea{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:9px;padding:10px 12px}textarea{resize:vertical;min-height:110px}.actions{flex-wrap:wrap;gap:9px;display:flex}.primary,.secondary,.danger{border-radius:9px;padding:9px 14px;font-weight:700}.primary{border:1px solid var(--accent);background:var(--accent);color:#fff}.secondary{border:1px solid var(--line);color:var(--ink);background:#fff}.danger{color:#9d2525;background:#fff2f2;border:1px solid #ffd3d3}.diff{color:#dbe5ff;background:#10182d;border-radius:10px;margin:0;padding:14px;overflow:auto}.thread{grid-template-rows:1fr auto;gap:14px;min-height:410px;display:grid}.thread-viewport{align-content:end;gap:10px;min-height:300px;display:grid}.message{border-radius:13px;max-width:78%;padding:12px 14px}.message.user{background:var(--accent);color:#fff;justify-self:end}.message.assistant{background:var(--accent-soft)}.composer{gap:8px;display:flex}.composer textarea{flex:1;min-height:44px}.proposal-card{border-left:4px solid var(--warning)}.safe-note{border-left:4px solid var(--success)}table{border-collapse:collapse;background:#fff;width:100%}th,td{border-bottom:1px solid var(--line);text-align:left;padding:12px}th{color:var(--muted);text-transform:uppercase;font-size:.78rem}@media (max-width:760px){.shell{grid-template-columns:1fr}.sidebar{position:static}.nav{grid-template-columns:repeat(3,1fr)}.content{padding:24px 16px}.form-grid{grid-template-columns:1fr}}