:root{color-scheme:light;--navy:#122d46;--blue:#1c5e86;--ink:#182c3e;--muted:#596b79;--line:#d9e1e8;--paper:#fff;--bg:#f2f5f8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;font-size:16px;line-height:1.6}header{height:86px;background:var(--navy);color:#fff;padding:0 max(5vw,24px);display:flex;align-items:center;justify-content:space-between;gap:24px;border-top:4px solid #dba852}a{color:var(--blue);text-underline-offset:4px}.brand{font-size:22px;font-weight:800;letter-spacing:.05em;color:#fff;text-decoration:none}.brand span{font-weight:400;opacity:.75}nav{display:flex;gap:28px}nav a{color:#d5e1eb;text-decoration:none;font-size:14px}nav a[aria-current]{color:#fff;border-bottom:2px solid #dba852}main{max-width:980px;margin:48px auto;padding:0 24px}.eyebrow{font-size:12px;letter-spacing:.16em;font-weight:750;color:var(--blue)}h1{font-family:Georgia,serif;font-size:clamp(30px,4vw,45px);font-weight:400;line-height:1.17;margin:14px 0 18px}.subtitle{color:var(--muted);margin:0 0 30px;max-width:700px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 0;font-size:14px;color:var(--muted)}button,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--ink);padding:10px 16px}button:hover{border-color:var(--blue);background:#edf4f8}button:disabled{cursor:wait;opacity:.6}.quiet{font-size:14px;background:transparent}.chat{background:var(--paper);border:1px solid var(--line);border-radius:10px;box-shadow:0 5px 20px #17364a06;overflow:hidden}#messages{padding:32px;max-height:660px;overflow-y:auto;min-height:290px}#welcome{max-width:700px}.small-title{font-size:12px;letter-spacing:.12em;color:var(--muted)}h2{font-family:Georgia,serif;font-size:29px;font-weight:400;line-height:1.25;margin:16px 0}#welcome p{color:var(--muted);max-width:580px}.examples{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.examples button{font-size:14px;text-align:left;background:#f7f9fb;padding:10px 12px}form{padding:22px 28px;border-top:1px solid var(--line);background:#fafcfd}label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}.compose{display:flex;gap:12px;align-items:flex-end}textarea{width:100%;resize:vertical;border:1px solid #aabcc9;border-radius:6px;padding:12px;background:white;color:var(--ink);min-height:80px}#send{background:var(--navy);color:white;min-height:48px;min-width:94px;border:0}.hint{font-size:12px;color:var(--muted);margin-top:10px}.disclaimer{font-size:13px;color:var(--muted);margin-top:22px}.message{padding:18px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.message:last-child{border:0}.message.user{font-weight:650}.message .role{display:block;color:var(--blue);font-size:12px;letter-spacing:.1em;margin-bottom:8px}.message p{margin:10px 0}blockquote{margin:18px 0 8px;border-left:3px solid #b6cbd9;padding:4px 0 4px 18px;font-size:16px;white-space:pre-wrap}.citation{display:block;font-size:14px;margin:8px 0 18px}.limitation{color:var(--muted);font-size:13px}details{padding:12px 16px;background:#f2f6f9;border-radius:4px;margin:16px 0}summary{cursor:pointer;font-size:14px;font-weight:600}.notice{padding:16px 20px;background:#e8eff5;border-left:3px solid #6e8ba1;font-size:14px}.source-list{display:grid;gap:14px;margin-top:30px}.source-card{background:white;padding:24px;border:1px solid var(--line);border-radius:7px}.source-card h2{font:650 18px/1.45 system-ui;margin:0 0 10px}.source-card p{font-size:14px;margin:7px 0;color:var(--muted)}.source-card a{font-size:14px;font-weight:600}footer{max-width:932px;margin:40px auto;padding:24px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:13px;color:var(--muted)}:focus-visible{outline:3px solid #dcac55;outline-offset:3px}@media(max-width:600px){header{height:auto;min-height:85px;padding:18px 20px;align-items:flex-start}nav{gap:12px;flex-direction:column}main{margin-top:32px;padding:0 16px}#messages{padding:22px;max-height:550px}form{padding:18px}.compose{gap:8px}#send{min-width:70px}.examples{flex-direction:column}footer{margin:30px 16px}h1 br{display:none}.toolbar{align-items:flex-start}}