:root{--background:#f5f6f8;--surface:#fff;--surface-soft:#f8f9fb;--text:#18202a;--text-soft:#68717d;--text-light:#8a929d;--border:#e2e5e9;--border-strong:#d4d8de;--primary:#202833;--primary-hover:#111820;--user-background:#eef1f5;--danger-background:#fff4f3;--danger-border:#f3c7c3;--danger-text:#8b312a;color:var(--text);background:var(--background);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#root{width:100%;min-width:0;min-height:100%;margin:0}body{background:var(--background);color:var(--text);margin:0;overflow-x:hidden}button,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:default}.app-shell{flex-direction:column;width:100%;max-width:1100px;min-height:100vh;margin:0 auto;padding:20px;display:flex}.topbar,.chat-card,.app-footer{width:min(100%,980px);margin-inline:auto}.topbar{justify-content:space-between;align-items:center;gap:20px;min-height:64px;margin-bottom:16px;display:flex}.topbar-brand{color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:12px;padding:0;display:flex}.topbar-avatar{object-fit:cover;border-radius:50%;width:42px;height:42px;display:block}.brand{font-size:20px;font-weight:750;line-height:1.15;display:block}.subtitle{color:var(--text-soft);margin-top:2px;font-size:13px;display:block}.secondary-button{border:1px solid var(--border);background:var(--surface);min-height:42px;color:var(--text);border-radius:12px;align-items:center;gap:8px;padding:0 16px;font-weight:600;transition:border-color .2s,background .2s;display:flex}.secondary-button:hover:not(:disabled){border-color:var(--border-strong);background:var(--surface-soft)}.plus{font-size:21px;font-weight:400;line-height:1}.chat-card{border:1px solid var(--border);background:var(--surface);border-radius:24px;flex-direction:column;flex:1;min-height:680px;max-height:calc(100vh - 135px);display:flex;overflow:hidden;box-shadow:0 12px 40px #1118270f}.chat-content{flex:1;min-height:0;overflow:hidden auto}.welcome{text-align:center;flex-direction:column;align-items:center;width:min(680px,100%);min-height:100%;margin:0 auto;padding:64px 28px 48px;display:flex}.welcome-avatar{object-fit:cover;border-radius:50%;width:108px;height:108px;margin-bottom:24px;display:block;box-shadow:0 8px 30px #00000017}.welcome-kicker{color:var(--text-soft);letter-spacing:.04em;text-transform:uppercase;margin-bottom:8px;font-size:13px;font-weight:650}.welcome h1{letter-spacing:-.035em;margin:0;font-size:clamp(34px,5vw,48px);line-height:1.08}.welcome-description{max-width:640px;color:var(--text-soft);margin:18px auto 0;font-size:17px;line-height:1.6}.welcome-question{margin:30px 0 14px;font-weight:700}.starters{gap:10px;width:min(590px,100%);display:grid}.starters button{border:1px solid var(--border);background:var(--surface);width:100%;color:var(--text);text-align:left;border-radius:14px;justify-content:space-between;align-items:center;gap:15px;padding:15px 17px;transition:transform .15s,border-color .15s,background .15s;display:flex}.starters button:hover:not(:disabled){border-color:var(--border-strong);background:var(--surface-soft);transform:translateY(-1px)}.starter-arrow{color:var(--text-light);font-size:18px}.messages{width:min(760px,100% - 40px);margin-inline:auto;padding:36px 0 42px}.message{margin-bottom:24px}.message.user{max-width:72%;margin-left:auto}.message.assistant{max-width:100%}.message.user .message-text{background:var(--user-background);border-radius:18px 18px 5px;padding:13px 17px}.message-header{align-items:center;gap:9px;margin-bottom:8px;display:flex}.message-avatar{object-fit:cover;border-radius:50%;width:32px;height:32px;display:block}.message-label{font-size:14px;font-weight:750}.message-text{font-size:16px;line-height:1.5}.message.assistant .message-text{padding-left:41px}.message-text p{margin:0 0 8px}.message-text p:last-child{margin-bottom:0}.message-text strong{font-weight:750}.message-text ul,.message-text ol{margin:7px 0 10px;padding-left:22px}.message-text li{margin:3px 0;padding-left:2px;line-height:1.5}.message-text li>p{margin:0}.message-text ol>li>p:first-child{display:inline}.message-text li>ul,.message-text li>ol{margin-top:5px;margin-bottom:7px}.message-text li li{margin:2px 0}.message-text h1,.message-text h2,.message-text h3{letter-spacing:-.015em;margin:14px 0 7px;line-height:1.25}.message-text h1:first-child,.message-text h2:first-child,.message-text h3:first-child{margin-top:0}.message-text h1{font-size:24px}.message-text h2{font-size:21px}.message-text h3{font-size:18px}.message-text blockquote{border-left:3px solid var(--border-strong);color:var(--text-soft);margin:12px 0;padding:3px 0 3px 14px}.message-text a{color:inherit;text-underline-offset:3px;text-decoration:underline}.thinking{align-items:center;gap:5px;height:32px;padding-left:41px;display:flex}.thinking span{background:var(--text-light);border-radius:50%;width:7px;height:7px;animation:1.3s ease-in-out infinite thinking-dot}.thinking span:nth-child(2){animation-delay:.16s}.thinking span:nth-child(3){animation-delay:.32s}@keyframes thinking-dot{0%,60%,to{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}.error-box{border:1px solid var(--danger-border);background:var(--danger-background);color:var(--danger-text);border-radius:13px;justify-content:space-between;align-items:center;gap:20px;margin:0 20px 12px;padding:13px 15px;display:flex}.error-box strong{font-size:14px}.error-box p{margin:3px 0 0;font-size:13px}.error-box button{border:1px solid var(--danger-border);color:var(--danger-text);background:#fff;border-radius:9px;padding:8px 13px;font-weight:700}.composer-wrapper{border-top:1px solid var(--border);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:5;background:#fffffff5;flex-direction:column;flex-shrink:0;align-items:center;width:100%;padding:14px 20px 13px;display:flex;position:relative}.composer{border:1px solid var(--border-strong);background:var(--surface);border-radius:18px;align-items:flex-end;gap:10px;width:min(760px,100% - 40px);margin:0;padding:8px 8px 8px 16px;transition:border-color .15s,box-shadow .15s;display:flex;box-shadow:0 4px 22px #1118270f}.composer:focus-within{border-color:#aeb4bd;box-shadow:0 6px 26px #11182717}.composer textarea{resize:none;width:100%;min-width:0;min-height:42px;max-height:140px;color:var(--text);background:0 0;border:0;outline:0;flex:1;padding:10px 0 8px;font-size:16px;line-height:1.45;overflow-y:hidden}.composer textarea::placeholder{color:#9aa1aa}.send-button{background:var(--primary);color:#fff;border:0;border-radius:12px;flex:0 0 42px;place-items:center;width:42px;height:42px;font-size:22px;line-height:1;transition:background .15s,transform .15s,opacity .15s;display:grid}.send-button:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px)}.send-button:disabled{opacity:.35}.composer-help{width:min(760px,100% - 40px);color:var(--text-light);text-align:center;margin:7px auto 0;font-size:11px}.app-footer{min-height:42px;color:var(--text-light);justify-content:space-between;align-items:flex-start;gap:20px;padding:12px 4px 0;font-size:11px;display:flex}.footer-brand{white-space:nowrap}@media (width<=700px){html,body,#root{width:100%;height:100%;min-height:100%;margin:0;overflow:hidden}.app-shell{flex-direction:column;width:100%;max-width:none;height:100dvh;min-height:0;margin:0;padding:0;display:flex;overflow:hidden}.topbar{border-bottom:1px solid var(--border);z-index:30;background:#fff;flex:0 0 64px;width:100%;max-width:none;height:64px;min-height:64px;margin:0;padding:10px 14px;position:relative}.topbar-brand{min-width:0}.topbar-avatar{width:38px;height:38px}.brand{font-size:19px}.subtitle{display:none}.secondary-button{white-space:nowrap;min-height:38px;padding:0 11px;font-size:12px}.chat-card{width:100%;max-width:none;min-height:0;box-shadow:none;border:0;border-radius:0;flex-direction:column;flex:auto;margin:0;display:flex;overflow:hidden}.chat-content{overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;flex:auto;width:100%;min-height:0;overflow:hidden auto}.welcome{width:100%;max-width:none;min-height:auto;margin:0;padding:38px 20px 28px}.welcome-avatar{width:82px;height:82px;margin-bottom:18px}.welcome-kicker{margin-bottom:8px;font-size:10px}.welcome h1{font-size:29px}.welcome-description{max-width:380px;margin-top:15px;font-size:14px;line-height:1.55}.welcome-question{margin:24px 0 13px;font-size:14px}.starters{gap:9px;width:100%;max-width:380px}.starters button{border-radius:13px;min-height:48px;padding:12px 14px;font-size:14px}.messages{width:100%;max-width:none;margin:0;padding:24px 16px 28px}.message{margin-bottom:22px}.message.user{max-width:88%}.message-text{font-size:15px;line-height:1.5}.message.assistant .message-text,.thinking{padding-left:0}.composer-wrapper{width:100%;max-width:none;padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--border);z-index:50;background:#fffffffa;flex:none;margin:0;display:block;position:relative}.composer{border-radius:16px;width:100%;min-width:0;max-width:none;margin:0;padding:7px 7px 7px 14px}.composer textarea{width:100%;min-width:0;max-width:100%;font-size:16px}.send-button{flex:0 0 42px;width:42px;min-width:42px;height:42px}.composer-help{display:none}.error-box{flex-shrink:0;width:auto;margin:0 12px 8px}.app-footer{display:none}}