:root{--bg: #f6f7fa;--surface: #fff;--sidebar: #eef1f6;--ink: #17243b;--muted: #69778c;--line: #e0e5ee;--hover: #e9eef5;--green: #203956;--accent: #eae0cc;--accent-ink: #92753e;--gold: #b79350;--danger: #b94b51;--shadow: 0 20px 70px #1427460d;--app-height: 100dvh;--reading-size: 15px;color-scheme:light}:root[data-theme=dark]{--bg: #0e1523;--surface: #151e2f;--sidebar: #101a2c;--ink: #e8ecf4;--muted: #9daac0;--line: #28334a;--hover: #202c42;--green: #d3b77e;--accent: #312d28;--accent-ink: #d9bd83;--gold: #d3b77e;--danger: #ec969a;--shadow: 0 24px 90px #0004;color-scheme:dark}:root[data-font=large]{--reading-size: 18px}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit;color:inherit}button{border:0;background:none;cursor:pointer;transition:background .18s,border-color .18s,transform .18s,box-shadow .18s;color:inherit}button:disabled{opacity:.45;cursor:not-allowed}button,select,a,input,textarea{outline-offset:4px}button:focus-visible,a:focus-visible{outline:2px solid var(--gold)}input,select,textarea{background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:12px 14px;min-width:0;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px #bd9d6020}input::placeholder,textarea::placeholder{color:var(--muted);opacity:.75}select option{background:var(--surface);color:var(--ink)}input[type=checkbox]{accent-color:var(--gold);width:18px;height:18px;flex:none;cursor:pointer}a{color:var(--green);text-underline-offset:3px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:600}p{line-height:1.85}.muted,.helper{color:var(--muted)}.helper{font-size:12px;line-height:1.9;margin:12px 0 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18px}.text-button{color:var(--green);display:inline-flex;align-items:center;gap:5px;padding:4px;font-size:inherit}.danger{color:var(--danger)}.danger-button{background:#a13c47;color:#fff}.brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:650;letter-spacing:-1px;white-space:nowrap}.brand-mark{width:39px;height:39px;display:grid;place-items:center;background:#1d314d;border-radius:12px;color:#e1c58f;box-shadow:0 4px 14px #10244118}[data-theme=dark] .brand-mark{background:#26354e;border:1px solid #405171}.brand-dot{color:var(--gold)}.badge{display:inline-flex;align-items:center;gap:5px;font-size:10px;line-height:1.6;border:1px solid var(--line);background:var(--hover);border-radius:6px;padding:3px 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var(--line);background:var(--hover);border-radius:12px;font-size:12px;line-height:1.8;margin:10px 0}.notice.error{background:#bf4f5410;border-color:#bf4f5428;color:var(--danger)}.notice .icon{height:26px;width:26px}.form{display:flex;flex-direction:column;gap:20px;margin-top:22px}.form label{display:flex;flex-direction:column;gap:9px;font-size:12px;font-weight:550}.form label input,.form label select,.form label textarea{width:100%;font-size:14px}.form textarea{resize:vertical;line-height:1.8;min-height:100px;max-height:300px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form label.check{flex-direction:row;align-items:center;font-size:12px;font-weight:400}.check input{width:18px!important}.form details{border:1px solid var(--line);border-radius:12px;padding:16px}.form summary{cursor:pointer;font-size:12px;font-weight:500}.form details 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h1{font-size:clamp(34px,3.3vw,48px);font-weight:550;line-height:1.55;letter-spacing:-1.4px;margin:25px 0 20px}.auth-story h1>span{color:var(--accent-ink)}.auth-story>p{color:var(--muted);font-size:14px;line-height:2}.auth-story .orb{margin:12px 0 0 50px;width:360px;height:260px;transform:scale(1.15)}.auth-story .orbit-caption{display:none}.auth-benefits{display:grid;grid-template-columns:1fr 1fr;max-width:405px;margin-top:24px;border-top:1px solid var(--line);padding-top:24px;gap:20px}.auth-benefits>div{display:grid;grid-template-columns:20px 1fr;column-gap:9px;row-gap:9px}.auth-benefits svg{color:var(--gold);grid-row:1/3}.auth-benefits strong{font-size:12px;font-weight:500}.auth-benefits span{color:var(--muted);font-size:10px}.auth-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);width:100%;max-width:445px;padding:38px 36px;position:relative}.auth-card:before{content:"";position:absolute;top:-1px;left:32px;right:32px;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent)}.auth-card-kicker{display:flex;align-items:center;gap:9px;color:var(--accent-ink);font-size:10px;letter-spacing:1px;margin-bottom:24px}.auth-card h2{font-size:28px;letter-spacing:-.8px;margin-bottom:10px;font-weight:550}.auth-card>.muted{font-size:12px;line-height:1.9}.auth-tabs{display:flex;border-bottom:1px solid var(--line);gap:24px;margin-top:24px}.auth-tabs button{padding:10px 0 12px;color:var(--muted);border-bottom:2px solid transparent;font-size:12px}.auth-tabs button.selected{color:var(--ink);border-color:var(--gold);font-weight:600}.auth-card .form{gap:18px;margin-top:23px}.auth-card input{min-height:46px}.password-field{position:relative}.password-field input{padding-right:44px}.password-field .icon{position:absolute;right:5px;top:4px;color:var(--muted)}.auth-note{border-top:1px solid var(--line);padding-top:22px;margin-top:26px;display:flex;align-items:center;justify-content:center;gap:8px;color:var(--muted);font-size:10px}.auth-page>footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;border-top:1px solid var(--line);color:var(--muted);font-size:10px;letter-spacing:.3px}.orb{position:relative;width:300px;height:218px;display:grid;place-items:center;margin:auto}.orb-glow{position:absolute;width:170px;height:170px;border-radius:50%;background:radial-gradient(circle,#c6a86b24,transparent 65%);filter:blur(12px)}.orbit{position:absolute;width:224px;height:82px;border:1px solid #a68b563f;transform:rotate(-27deg);border-radius:50%}.orbit.two{width:245px;height:105px;transform:rotate(34deg);border-color:#97a7c432}.orbit.three{width:170px;height:88px;transform:rotate(82deg);border-color:#bca47436}.orb-core{width:92px;height:92px;background:radial-gradient(ellipse at 30% 20%,#37557a,#152842);display:grid;place-items:center;border-radius:50%;box-shadow:inset 1px 1px 1px #7e9dca50,0 15px 40px #1b304a20;color:#e2c98f;z-index:1}[data-theme=dark] .orb-core{background:radial-gradient(ellipse at 30% 20%,#31466a,#17263c);box-shadow:inset 1px 1px 1px #7e9dca50,0 0 50px #28436836}.orb-star{position:absolute;color:var(--gold)}.star-a{right:35px;top:42px;font-size:23px}.star-b{left:40px;bottom:45px;font-size:12px}.orb-point{position:absolute;width:7px;height:7px;border-radius:50%;background:var(--gold);right:68px;bottom:53px;box-shadow:0 0 12px #d4b67560}.orb-point.second{width:4px;height:4px;left:77px;top:64px;background:#899bbc}.orbit-caption{position:absolute;bottom:0;font-size:9px;letter-spacing:1px;color:var(--muted)}.app-shell{display:flex;height:var(--app-height);max-height:100dvh;overflow:hidden;background:var(--bg)}.sidebar{width:294px;flex:none;background:var(--sidebar);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:28px 19px 14px;overflow:hidden;transition:width .2s,padding .2s}.sidebar-brand{display:flex;align-items:center;justify-content:space-between;margin:0 4px 14px}.sidebar .brand{font-size:23px;gap:10px}.sidebar-toggle{color:var(--muted);width:27px}.workspace-label{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:10px;margin:0 9px 26px}.workspace-label>span{width:4px;height:4px;background:var(--gold);border-radius:50%}.new-chat{display:flex;align-items:center;gap:10px;width:100%;min-height:48px;background:#233a57;color:#f4ecd9;border:1px solid #38506d;border-radius:12px;padding:12px 15px;font-size:12px;box-shadow:0 5px 16px #16294212}.new-chat:hover:not(:disabled){background:#2a4466}.new-chat .key-hint{margin-left:auto;font-size:10px;color:#a5b3c9}[data-theme=dark] .new-chat{background:#273950;border-color:#3c506b}.search{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:0 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solid transparent;border-radius:11px;margin-bottom:4px}.conversation.active{border-color:#b7935036;background:var(--surface);box-shadow:0 3px 8px #152a4310}.conversation.active:before{content:"";position:absolute;left:-1px;top:17px;bottom:17px;width:2px;border-radius:2px;background:var(--gold)}.conversation:hover{background:var(--surface)}.conversation-main{padding:13px 34px 13px 12px;width:100%;text-align:left;min-width:0;display:flex;flex-direction:column;gap:7px}.conversation-title{display:flex;align-items:center;gap:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px;line-height:1.5}.conversation-title svg{color:var(--gold);flex:none}.conversation-preview{color:var(--muted);font-size:10px;width:100%;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:29px;position:relative}.conversation-preview time{position:absolute;right:0;top:0;background:var(--sidebar);padding-left:7px;font-size:9px}.conversation.active time,.conversation:hover time{background:var(--surface)}.conversation-more{position:absolute;right:4px;top:10px;width:27px;height:27px;color:var(--muted);border-radius:7px}.conversation-more:hover{background:var(--hover)}.sidebar-empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:42px 12px;color:var(--muted)}.sidebar-empty>span{color:var(--gold);opacity:.65}.sidebar-empty strong{font-size:11px;font-weight:500}.sidebar-empty p{font-size:10px;line-height:1.8}.sidebar-bottom{flex:none;padding-top:14px}.quota{padding:14px 12px;border:1px solid var(--line);border-radius:11px;background:var(--surface);margin-bottom:12px}.quota>div:first-child{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted)}.quota strong{font-size:13px;color:var(--ink);font-weight:500}.quota strong>span{font-size:10px;color:var(--muted)}.quota-line{height:3px;border-radius:3px;background:var(--line);margin-top:12px;overflow:hidden}.quota-line>span{display:block;height:100%;background:var(--gold)}.sidebar-link{display:flex;align-items:center;gap:10px;padding:11px 10px;width:100%;font-size:12px;border-radius:9px}.sidebar-link>span{margin-left:auto;font-size:9px;color:var(--muted)}.sidebar-link:hover{background:var(--hover)}.user-row{display:flex;align-items:center;gap:4px;border-top:1px solid var(--line);margin-top:10px;padding-top:14px}.user-profile{flex:1;min-width:0;display:flex;align-items:center;gap:9px;text-align:left;padding:3px}.user-profile>span:nth-child(2){flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;font-size:12px;white-space:nowrap}.user-profile small{display:block;font-size:9px;margin-top:4px;color:var(--muted)}.user-profile>svg{color:var(--muted)}.avatar{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;flex:none;font-size:13px;font-weight:600;background:var(--accent);color:var(--accent-ink);border:1px solid #b7935020}.chat-main{flex:1;min-width:0;display:flex;flex-direction:column;position:relative;background:radial-gradient(ellipse at 70% 20%,#b7935005,transparent 60%),var(--bg)}.chat-top{display:flex;align-items:center;justify-content:space-between;gap:12px;height:76px;flex:none;padding:0 34px;border-bottom:1px solid var(--line);background:var(--bg)}.header-left,.header-actions{display:flex;align-items:center;gap:12px;min-width:0}.model-select{display:flex;align-items:center;gap:9px;min-width:0;max-width:340px;padding:4px 0}.model-select select{appearance:none;border:0;background:transparent;box-shadow:none;padding:10px 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#11294a03}.starter>div{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}.starter>div>svg{width:14px;opacity:.65}.starter-icon{width:32px;height:32px;display:grid;place-items:center;background:#8fa4c218;color:#5e7699;border-radius:9px}.starter-icon.write{background:#b99e7617;color:#a08454}.starter-icon.code{background:#839e8b18;color:#6f8d7d}.starter strong{font-size:12px;font-weight:550;line-height:1.6}.starter>span{font-size:10px;line-height:1.9;color:var(--muted)}.starter:hover{border-color:#b7935065;transform:translateY(-3px);box-shadow:0 10px 25px #2038510b}.welcome-note{display:flex;align-items:center;gap:6px;font-size:9px;color:var(--muted);margin-top:20px}.composer-area{width:100%;max-width:862px;flex:none;margin:0 auto;padding:10px 32px max(18px,env(safe-area-inset-bottom));position:relative}.composer{background:var(--surface);border:1px solid #cdd6e3;border-radius:19px;padding:19px 19px 13px;box-shadow:0 7px 30px #18335707}[data-theme=dark] .composer{border-color:#37445d;box-shadow:0 7px 30px #0002}.composer:focus-within{border-color:#b59d6a;box-shadow:0 0 0 3px #b7935009,0 7px 30px #18335707}.composer textarea{width:100%;display:block;resize:none;border:0;border-radius:0;padding:0;outline:0;box-shadow:none!important;background:none;line-height:1.8;font-size:14px;max-height:170px;min-height:30px}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:13px}.composer-mode{display:flex;align-items:center;gap:6px;font-size:10px;color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:6px 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