:root{color:#183249;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#f7f7f7;font-family:Georgia,Times New Roman,serif}*{box-sizing:border-box}body{background:#f7f7f7;min-width:320px;margin:0}button,textarea{font:inherit}:root{--brand:#2864e8;--brand-dark:#1f4fb9;--brand-soft:#e8eefb;--ink:#080808;--muted:#56616f;--line:#d9dee8;--paper:#fff;--page:#f6f6f6}.shell{background:var(--paper);max-width:1260px;min-height:100svh;color:var(--ink);flex-direction:column;margin:0 auto;padding:30px 42px;display:flex}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding-bottom:20px;display:flex}.brand-identity,.header-actions{align-items:center;display:flex}.brand-identity{gap:16px}.brand-logo{object-fit:contain;width:84px;height:84px}.brand-subtitle{color:var(--muted);margin-top:3px;font-size:24px}h1,h2,p{margin:0}h1{letter-spacing:-.5px;font-size:36px;font-weight:700;line-height:1}.header-actions{gap:22px}.brochure-link{color:var(--brand-dark);border:1px solid #c5d2eb;border-radius:6px;padding:9px 12px;font-size:12px;text-decoration:none}.brochure-link span{margin-left:5px;font-size:16px}.avatar{object-fit:cover;border:3px solid var(--brand);border-radius:50%;width:86px;height:86px}.workspace{flex:1;width:100%;margin:auto;padding:24px 0 8px}.intro{margin-bottom:30px}.welcome-card{background:#f0f0f0;border-radius:12px;align-items:center;gap:18px;padding:16px 22px;display:flex}.welcome-avatar{object-fit:cover;border-radius:50%;width:54px;height:54px}.welcome-card p{flex-direction:column;gap:2px;font-size:24px;line-height:1.15;display:flex}.welcome-card strong{font-weight:700}.conversation{flex-direction:column;gap:18px;min-height:180px;display:flex}.empty-state{color:var(--muted);text-align:center;margin:auto;font-size:14px}.spark{color:var(--brand);margin-bottom:12px;font-size:30px;display:block}.bubble{white-space:pre-wrap;max-width:88%;padding:18px 20px;font-size:17px;line-height:1.55}.user-bubble{background:var(--brand-soft);color:var(--ink);border-radius:18px 18px 3px;align-self:flex-end}.model-bubble{border-left:2px solid var(--brand);color:var(--ink);align-self:flex-start}.model-label{color:var(--brand-dark);letter-spacing:1.5px;margin-bottom:8px;font-size:10px;display:block}.composer{background:var(--paper);border:1px solid #c7cbd2;border-radius:12px;align-items:center;gap:14px;margin-top:24px;padding:0;display:flex;overflow:hidden}textarea{resize:vertical;width:100%;min-height:66px;color:var(--ink);background:0 0;border:0;outline:0;padding:16px;font-size:19px;line-height:1.5;display:block}textarea::placeholder{color:#6c7480}button{color:#fff;background:var(--brand);cursor:pointer;border:0;border-radius:12px;margin:0 10px 0 auto;padding:14px 24px;font-size:18px;display:block}button span{margin-left:12px;font-size:18px}button:disabled{opacity:.45;cursor:not-allowed}.error{color:#a33f37;margin-top:12px;font-size:12px}footer{border-top:1px solid var(--line);color:var(--muted);letter-spacing:1px;justify-content:space-between;padding-top:18px;font-size:10px;display:flex}@media (width<=600px){.shell{padding:20px}.brand-logo{width:60px;height:60px}h1{font-size:28px}.brand-subtitle{font-size:18px}.header-actions{gap:10px}.brochure-link{border:0;padding:0;font-size:0}.brochure-link span{font-size:22px}.avatar{width:58px;height:58px}.workspace{padding-top:24px}.welcome-card{padding:14px}.welcome-card p{font-size:18px}.composer{align-items:flex-end}button{padding:12px 16px;font-size:16px}footer{flex-wrap:wrap;gap:20px}}