:root{color-scheme:light;--ink:#202631;--muted:#717887;--line:#e4e7ec;--blue:#1469df;--app-height:100dvh;--app-top:0px}
*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;color:var(--ink);background:#f6f7f9}
button,input,textarea,select{font:inherit}button{cursor:pointer;touch-action:manipulation}button:disabled{opacity:.45;cursor:default}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #9bc2fb;outline-offset:2px}
[hidden]{display:none!important}.icon{border:0;background:transparent;border-radius:12px;min-width:44px;min-height:44px;font-size:24px;color:var(--ink)}
#app{position:fixed;left:0;right:0;top:var(--app-top);height:var(--app-height);display:flex;flex-direction:column;padding-top:env(safe-area-inset-top);background:#fff}
header{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--line);flex-shrink:0}
.brand{flex:1;min-width:0}.brand strong{font-size:17px}.brand small{display:block;font-size:11px;color:var(--muted);margin-top:3px}
#title{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:65vw}
#notice{display:flex;align-items:center;gap:8px;padding:8px 18px;font-size:12px;color:var(--muted);min-height:34px;background:#fafbfc;flex-shrink:0}
#noticeText{flex:1}#notice.error{color:#a34428}#noticeAction{border:0;background:transparent;color:var(--blue);padding:4px 8px}
#messages{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:18px max(16px,calc((100vw - 780px)/2));scroll-behavior:auto}
.empty{color:var(--muted);text-align:center;margin:18vh 0 0;line-height:1.8}.empty strong{display:block;color:var(--ink);font-size:23px;margin-bottom:10px}
.message{max-width:100%;margin:0 0 24px;line-height:1.75;overflow-wrap:anywhere;font-size:16px}
.message.user{margin-left:auto;max-width:90%;width:fit-content;background:#f0f3f8;border:1px solid #e7ebf1;border-radius:20px 20px 5px 20px;padding:11px 15px;white-space:pre-wrap}
.message.assistant{padding:0 2px}.message p{margin:.4em 0}.message h3{font-size:17px;margin:1em 0 .3em}.message ul{padding-left:23px;margin:.4em 0}
.message blockquote{margin:.5em 0;border-left:3px solid #cbd8eb;padding-left:12px;color:#5c6471}
.message pre{overflow:auto;background:#f4f6f9;border:1px solid var(--line);border-radius:12px;padding:12px;font-size:13px;line-height:1.6;white-space:pre}
.message code{background:#eef1f6;border-radius:4px;padding:1px 4px;font-size:.88em}.message pre code{background:none;padding:0}
.label{font-size:11px;color:var(--muted);margin-bottom:6px;letter-spacing:.03em}.sources{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.cite{display:inline-block;border:1px solid #dce5f2;background:#f5f8fd;color:#386aa6;border-radius:7px;padding:2px 6px;font-size:11px;vertical-align:baseline}
#composer{border-top:1px solid var(--line);padding:9px max(12px,calc((100vw - 800px)/2)) calc(10px + env(safe-area-inset-bottom));background:#fff;flex-shrink:0;max-height:60%;overflow-y:auto;overscroll-behavior:contain}
.options{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:11px;margin:0 3px 7px}
.options{gap:8px;flex-wrap:wrap}.options label{display:flex;align-items:center;gap:3px;min-height:32px;white-space:nowrap}.options input{accent-color:var(--blue)}
#webOptions{margin:0 3px 8px}#webQuery{width:100%;min-height:38px;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:16px;background:#fafbfc}#webOptions p{line-height:1.5;margin:5px 0}
.voice{border:1px solid var(--line);border-radius:13px;background:#f2f5fa;color:#526785;min-width:46px;height:46px;font-size:12px;padding:0 8px}.voice[aria-pressed="true"]{color:#a32d39;background:#fff0f2;border-color:#efb4bd}
.voicebar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:5px 3px 0;min-height:18px;font-size:11px;color:var(--muted)}#stopSpeech{border:0;background:transparent;color:var(--blue);font-size:11px;padding:4px}
.voiceHelp{font-size:11px;margin:3px 3px 0;line-height:1.5}.voiceHelp p{margin:6px 0;max-height:15vh;overflow:auto}.sources a{text-decoration:none}.cite:focus-visible{outline:2px solid var(--blue)}
select{border:0;background:#f2f4f7;color:#596375;border-radius:8px;font-size:12px;padding:6px}
.inputrow{display:flex;align-items:flex-end;gap:8px}textarea{resize:none;flex:1;min-width:0;min-height:46px;max-height:152px;border:1px solid #dce1e8;background:#fafbfc;border-radius:15px;padding:11px 13px;line-height:1.45;font-size:16px}
.primary{border:0;background:var(--blue);color:white;border-radius:13px;padding:12px 16px;font-weight:600;min-height:44px}
#send{width:48px;height:46px;padding:0;font-size:23px}.hint{font-size:11px;color:var(--muted)}
dialog{border:1px solid var(--line);border-radius:20px;padding:0;color:var(--ink);max-height:90dvh;max-width:calc(100vw - 24px)}
dialog::backdrop{background:#17233755;backdrop-filter:blur(3px)}
#drawer{margin:0;min-height:100dvh;width:min(86vw,350px);max-height:100dvh;max-width:350px;border-radius:0 20px 20px 0;padding:calc(10px + env(safe-area-inset-top)) 16px calc(20px + env(safe-area-inset-bottom))}
.dialogbar{display:flex;justify-content:space-between;align-items:center;gap:12px}.dialogbar strong{font-size:18px}
#sessionList{overflow:auto;max-height:60dvh;margin:18px 0}.session{display:block;width:100%;text-align:left;padding:13px;border:1px solid transparent;border-radius:12px;background:transparent;margin-bottom:4px}
.session.current{background:#eef4ff;border-color:#dce8fb}.session span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session small{display:block;color:var(--muted);margin-top:6px;font-size:11px}
details{font-size:13px;color:var(--muted);line-height:1.7;margin-top:18px}summary{cursor:pointer;color:#526785}
#sourceDialog{width:min(760px,calc(100vw - 24px));padding:16px}#sourceMeta{overflow-wrap:anywhere;font-size:12px;color:var(--muted);line-height:1.7;margin:8px 0}
#sourceText{white-space:pre-wrap;overflow-wrap:anywhere;overflow:auto;max-height:62dvh;font-size:14px;line-height:1.8}
#login{min-height:100dvh;display:grid;place-items:center;padding:24px}.loginCard{width:min(100%,370px);background:white;border:1px solid var(--line);padding:28px;border-radius:24px;box-shadow:0 12px 60px #192d4a08}
.loginCard h1{font-size:27px;margin:0 0 10px}.loginCard p{color:var(--muted);font-size:14px;line-height:1.7}
#token{width:100%;font-size:16px;border:1px solid #d9dfe7;border-radius:12px;padding:12px;margin:6px 0 12px}#loginError{color:#a34428;font-size:13px;min-height:20px}
#loginRetry{border:0;background:transparent;color:var(--blue);padding:12px 0}
@media(min-width:800px){header{padding-left:max(16px,calc((100vw - 820px)/2));padding-right:max(16px,calc((100vw - 820px)/2))}}