:root{--text:#31413b;--text-strong:#10241c;--muted:#6c7a73;--surface:#fbf8ef;--surface-strong:#fffdf7;--surface-soft:#f3efe2;--line:#dfd7c5;--line-strong:#c7bda8;--mono:"Cascadia Mono", "SFMono-Regular", Consolas, monospace;--sans:"Aptos", "Segoe UI", "Helvetica Neue", system-ui, -apple-system, sans-serif;font:16px/1.5 var(--sans);color:var(--text);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(circle at 12% 8%,#a074362e,#0000 30rem),radial-gradient(circle at 84% 18%,#235c4433,#0000 28rem),linear-gradient(135deg,#f5ecd8 0%,#eef4ea 55%,#f8f3e6 100%)}*{box-sizing:border-box}body{min-width:320px;margin:0}button,textarea{font:inherit}#root{min-height:100svh}.chat-shell{justify-content:center;align-items:stretch;min-height:100svh;padding:32px;display:flex}.chat-panel{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 92%, transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-radius:28px;grid-template-rows:auto auto 1fr auto auto;width:min(1120px,100%);min-height:calc(100svh - 64px);display:grid;overflow:hidden;box-shadow:0 24px 80px #15231f29}.chat-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:24px;padding:28px;display:flex}.eyebrow{color:var(--muted);letter-spacing:.14em;text-transform:uppercase;margin:0 0 8px;font-size:13px;font-weight:700}.chat-header h1{color:var(--text-strong);letter-spacing:-.04em;margin:0;font-size:clamp(28px,5vw,48px);line-height:1.02}.subtitle{max-width:680px;color:var(--muted);margin:12px 0 0}.secondary-button,.composer button{font:inherit;cursor:pointer;border:0;border-radius:999px;font-weight:700}.secondary-button{color:var(--text-strong);background:var(--surface-strong);border:1px solid var(--line);flex:none;padding:10px 16px}.secondary-button:hover:not(:disabled),.composer button:hover:not(:disabled){transform:translateY(-1px)}.secondary-button:disabled,.composer button:disabled,.composer textarea:disabled{cursor:not-allowed;opacity:.6}.session-bar{color:var(--muted);background:var(--surface-soft);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:12px 28px;font-size:14px;display:flex}.session-bar strong{color:var(--text-strong);font-family:var(--mono);word-break:break-all;font-size:13px;font-weight:700}.messages{flex-direction:column;gap:22px;padding:28px;display:flex;overflow-y:auto}.empty-state{max-width:560px;color:var(--muted);text-align:center;border:1px dashed var(--line-strong);background:var(--surface-soft);border-radius:24px;margin:auto;padding:32px}.empty-state h2{color:var(--text-strong);margin:0 0 10px;font-size:24px}.empty-state p{margin:0}.message{flex-direction:column;gap:8px;display:flex}.message-user{align-items:flex-end}.message-assistant{align-items:flex-start}.message-label{color:var(--muted);padding:0 6px;font-size:13px;font-weight:700}.message-bubble{max-width:min(780px,88%);color:var(--text);text-align:left;border:1px solid var(--line);background:var(--surface-strong);border-radius:22px;padding:16px 18px}.message-user .message-bubble{color:#f7fbf7;background:linear-gradient(135deg,#235c44,#1b4a3a);border-color:#0000;border-bottom-right-radius:7px}.message-assistant .message-bubble{border-bottom-left-radius:7px}.message-bubble p{white-space:pre-wrap;margin:0}.pending{color:var(--muted)}.answer-meta{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.answer-meta span{color:var(--muted);background:var(--surface-soft);border-radius:999px;padding:4px 8px;font-size:12px}.references{border-top:1px solid var(--line);margin-top:16px;padding-top:14px}.references h3{color:var(--text-strong);margin:0 0 10px;font-size:15px}.references ul{gap:10px;margin:0;padding:0;list-style:none;display:grid}.references li{background:var(--surface-soft);border-radius:14px;gap:3px;padding:10px 12px;display:grid}.references strong{color:var(--text-strong);font-size:14px}.references span,.references em{color:var(--muted);font-size:13px;font-style:normal}.error-box{color:#7a220d;text-align:left;background:#fff0ea;border:1px solid #f3b59e;border-radius:14px;margin:0 28px 16px;padding:12px 14px}.composer{border-top:1px solid var(--line);background:color-mix(in srgb, var(--surface) 88%, transparent);grid-template-columns:1fr auto;gap:12px;padding:18px 28px 24px;display:grid}.composer textarea{resize:vertical;min-height:54px;max-height:180px;color:var(--text-strong);border:1px solid var(--line);background:var(--surface-strong);font:inherit;border-radius:18px;padding:14px 16px}.composer textarea:focus{border-color:#2f7458;outline:3px solid #235c442e}.composer button{color:#f7fbf7;background:#235c44;padding:0 24px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width<=720px){.chat-shell{padding:0}.chat-panel{border:0;border-radius:0;min-height:100svh}.chat-header{flex-direction:column;padding:22px 18px}.secondary-button{width:100%}.session-bar,.messages{padding-inline:18px}.message-bubble{max-width:94%}.composer{grid-template-columns:1fr;padding:14px 18px 18px}.composer button{min-height:48px}}