@font-face{font-family:'DM Sans';src:url('/static/assets/dm-sans-variable.ttf') format('truetype');font-display:swap}*{box-sizing:border-box}:root{font-family:'DM Sans',system-ui,'PingFang TC',sans-serif;color:#172238;background:#f3f6fa;line-height:1.6;color-scheme:light;--blue:#2453b8;--muted:#516079;--line:#d6deea}body{margin:0}a{color:var(--blue);text-underline-offset:4px}button,textarea{font:inherit}button{min-height:44px;padding:10px 16px;border:1px solid var(--line);border-radius:8px;background:white;color:#203655;cursor:pointer}button:hover:not(:disabled){background:#edf2fb}button:disabled{opacity:.55;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #2674de;outline-offset:3px}button.primary{background:var(--blue);color:white;border-color:var(--blue)}button.primary:hover:not(:disabled){background:#173e91}header{background:#10152c;padding:20px max(24px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px}header img{display:block;max-width:100%;height:auto}header button{background:transparent;color:#f1f5ff;border-color:#56627b}header button:hover:not(:disabled){background:#23304e}main{max-width:1168px;margin:auto;padding:46px 24px 56px}h1,h2,h3,p{margin:0}h1{font-size:clamp(30px,5vw,44px);letter-spacing:-.025em;line-height:1.2}h2{font-size:19px;line-height:1.4}h3{font-size:21px}.intro{max-width:740px;margin-bottom:32px}.intro>p{margin-top:14px;font-size:18px;color:var(--muted)}.intro .pilot-note{font-size:14px;color:#43516a}.layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:40px;align-items:start}.chat{background:#fff;border:1px solid var(--line);border-radius:14px;min-width:0;overflow:hidden}.chat-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px;border-bottom:1px solid var(--line)}.identity{display:flex;align-items:center;gap:12px;min-width:0}.identity img{object-fit:contain}.identity p{font-size:14px;color:var(--muted)}.chat-heading>button{font-size:14px;white-space:nowrap}.welcome{padding:28px}.welcome>p{margin:12px 0 22px;color:var(--muted);max-width:65ch}.welcome label{display:flex;gap:12px;align-items:flex-start;font-size:14px;margin-bottom:12px}.welcome input{width:20px;height:20px;flex:none;margin-top:3px;accent-color:var(--blue)}.welcome>a{font-size:14px}.welcome>button{display:block;margin-top:24px}#messages{padding:24px;min-height:140px;max-height:520px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#a6b7d2 white}.message{margin-bottom:24px;white-space:pre-wrap;overflow-wrap:anywhere}.message:last-child{margin:0}.speaker{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:6px}.message.user{margin-left:30px;padding:12px 16px;background:#edf2fb;border-radius:8px}.mode{display:block;font-size:13px;color:#485978;margin-top:10px}.sources{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;margin-top:10px}.suggestions{display:flex;gap:8px;flex-wrap:wrap;padding:0 24px 20px}.suggestions button{font-size:14px;text-align:left}form{padding:20px 24px;border-top:1px solid var(--line)}textarea{width:100%;resize:vertical;min-height:92px;padding:12px;border:1px solid #95a6bf;border-radius:8px;font-size:16px;caret-color:var(--blue);color:#172238;background:white}textarea::placeholder{color:#596780}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:10px}#status{font-size:14px;color:var(--muted)}#error{padding:16px 24px;color:#9e202b;font-size:15px}aside{padding-top:10px;min-width:0}aside ol{padding-left:22px;margin:14px 0 32px;color:var(--muted)}aside li{margin-bottom:14px}aside p{margin:12px 0;color:var(--muted)}.feedback{display:inline-block;font-weight:600;margin-top:4px}.small{font-size:14px}.followup{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.followup a{display:block;margin-top:12px}footer{max-width:1120px;margin:0 auto;padding:24px 0;border-top:1px solid var(--line);display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:14px}footer span{margin-right:auto}::selection{background:#cee0ff;color:#142747}[hidden]{display:none!important}.sr-only,.skip{position:absolute;clip:rect(0,0,0,0);width:1px;height:1px;overflow:hidden}.skip:focus{clip:auto;width:auto;height:auto;z-index:2;background:white;padding:12px}.privacy{max-width:800px}.privacy h2{margin:30px 0 12px}.privacy p{margin:12px 0}.privacy ul{padding-left:24px}@media(max-width:850px){.layout{grid-template-columns:1fr;gap:28px}aside{border-top:1px solid var(--line);padding-top:28px}footer{margin:0 24px}.intro{margin-bottom:24px}}@media(max-width:480px){header{padding:16px}header img{width:145px}main{padding:28px 16px 36px}.intro>p{font-size:16px}.chat-heading{padding:16px;gap:8px}.identity{gap:8px}.identity img{width:36px;height:36px}.identity p{font-size:13px}.chat-heading>button{padding:8px}.welcome{padding:22px 18px}#messages{padding:20px 18px}.suggestions{padding:0 18px 18px}form{padding:18px}footer{margin:0 16px}}@media(prefers-reduced-motion:no-preference){button{transition:background-color .15s ease}}