:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f7f7f5;--surface:#fff;--ink:#111827;--muted:#6b7280;--soft:#f1f2ef;--line:#dfdfd8;--accent:#111827;--accent-ink:#fff}*{box-sizing:border-box}html,body{min-height:100%}body{background:var(--bg);color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.chat-main{background:var(--bg);justify-content:center;min-height:100vh;display:flex}.chat-shell{grid-template-rows:auto 1fr auto;width:min(880px,100%);min-height:100vh;padding:18px 18px 20px;display:grid}.chat-header{justify-content:space-between;align-items:center;gap:12px;min-height:48px;display:flex}.chat-title-block{gap:3px;display:grid}.chat-title-block h1{letter-spacing:0;margin:0;font-size:18px;line-height:1.2}.chat-title-block p{color:var(--muted);margin:0;font-size:12px;line-height:1.3}.language-switch{border:1px solid var(--line);background:var(--surface);border-radius:8px;gap:4px;padding:4px;display:inline-flex}.language-switch button{min-width:48px;height:32px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:6px}.language-switch button.active{background:var(--accent);color:var(--accent-ink)}.chat-thread{flex-direction:column;justify-content:center;gap:22px;padding:26px 0 18px;display:flex}.chat-thread.has-answer{justify-content:flex-start}.empty-chat{text-align:center;justify-items:center;gap:18px;padding-bottom:8vh;display:grid}.empty-chat h2{letter-spacing:0;max-width:720px;margin:0;font-size:clamp(28px,5vw,44px);line-height:1.08}.empty-chat p{max-width:560px;color:var(--muted);margin:0;font-size:15px;line-height:1.55}.starter-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:min(720px,100%);display:grid}.starter-grid button{border:1px solid var(--line);background:var(--surface);color:#374151;cursor:pointer;border-radius:8px;justify-content:center;align-items:center;min-height:54px;padding:10px 12px;font-size:14px;line-height:1.35;display:flex}.message{width:100%;display:flex}.user-message{justify-content:flex-end}.assistant-message{justify-content:flex-start}.message-body{border-radius:8px;max-width:min(720px,92%);padding:14px 16px;font-size:15px;line-height:1.65}.user-message .message-body{background:var(--accent);color:var(--accent-ink)}.assistant-message .message-body{color:var(--ink);background:0 0;padding-left:0}pre{white-space:pre-wrap;word-break:break-word;margin:0;font-family:Arial,Helvetica,sans-serif}.answer-images{gap:14px;margin-top:18px;display:grid}.answer-images figure{gap:6px;margin:0;display:grid}.answer-images img{border:1px solid var(--line);background:var(--surface);border-radius:8px;width:min(100%,760px);height:auto;display:block}.answer-images figcaption{color:var(--muted);font-size:12px;line-height:1.4}.sources{color:var(--muted);gap:7px;margin-top:18px;font-size:13px;display:grid}.source-title{color:#374151;font-weight:700}.sources a{color:#374151;border-bottom:1px solid var(--line);overflow-wrap:anywhere;width:fit-content;max-width:100%}.feedback-row{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;margin-top:18px;font-size:13px;display:flex}.feedback-row button{border:1px solid var(--line);background:var(--surface);color:#374151;cursor:pointer;border-radius:7px;min-width:44px;height:30px}.feedback-row button.selected{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}.feedback-row button:disabled{cursor:wait;opacity:.7}.loading-card{border:1px solid var(--line);background:var(--surface);padding:16px;box-shadow:0 10px 28px #1118270f}.loading-title{margin-bottom:12px;font-weight:700}.loading-progress{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px;display:grid}.loading-progress span{transform-origin:0;background:#111827;border-radius:999px;height:5px;animation:1.2s ease-in-out infinite loadingSweep}.loading-progress span:nth-child(2){animation-delay:.16s}.loading-progress span:nth-child(3){animation-delay:.32s}.loading-lines{color:var(--muted);gap:5px;font-size:13px;display:grid}@keyframes loadingSweep{0%{opacity:.25;transform:scaleX(.25)}45%{opacity:1;transform:scaleX(1)}to{opacity:.4;transform:scaleX(.45)}}.chat-composer{border:1px solid var(--line);background:var(--surface);border-radius:8px;grid-template-columns:1fr auto;align-items:center;gap:8px;padding:10px;display:grid;box-shadow:0 10px 28px #11182714}.chat-composer input{width:100%;min-height:46px;color:var(--ink);background:0 0;border:0;outline:0;font-size:16px}.chat-composer button{background:var(--accent);min-width:74px;height:40px;color:var(--accent-ink);cursor:pointer;border:0;border-radius:8px;font-weight:700}.chat-composer button:disabled{cursor:wait;opacity:.8}.composer-error{color:#b91c1c;padding:8px 4px 0;font-size:13px}@media (max-width:720px){.chat-shell{padding:14px 12px 16px}.starter-grid{grid-template-columns:1fr}.chat-header{align-items:flex-start}.message-body{max-width:100%;font-size:14px}}