:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#0b1426;background:#f5f1e8;font-synthesis:none;text-rendering:optimizeLegibility;--navy: #0b1426;--gold: #b08a2e;--paper: #fffdf8;--muted: #6d6a63;--border: #ded7c8}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input{font:inherit}.app-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.chat-shell{width:min(760px,100%);min-height:min(720px,calc(100vh - 48px));display:grid;grid-template-rows:auto 1fr auto;overflow:hidden;border:1px solid var(--border);border-radius:20px;background:var(--paper);box-shadow:0 24px 70px #0b14261a}.chat-shell__header{padding:28px 32px 20px;border-bottom:1px solid var(--border)}.eyebrow{margin:0 0 6px;color:var(--gold);font-size:.75rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase}h1{margin:0;font-family:Georgia,serif;font-size:clamp(1.5rem,4vw,2.25rem);font-weight:500}.message-area{min-height:320px}.composer{display:grid;grid-template-columns:1fr auto;gap:10px;padding:20px;border-top:1px solid var(--border)}.composer input{min-width:0;padding:14px 16px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--navy)}.composer input:focus{outline:2px solid color-mix(in srgb,var(--gold) 55%,white);outline-offset:2px}.composer button{padding:0 20px;border:0;border-radius:999px;background:var(--navy);color:#fff}.composer button:disabled{cursor:not-allowed;opacity:.45}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}