:root{color:#253d53;font-synthesis:none;--ink:#253d53;--muted:#667a8b;--blue:#284e75;--line:#dde6ed;--paper:#fff;--mist:#edf3f8;--soft:#f6f9fb;background:#edf3f8;font-family:Microsoft YaHei UI,PingFang SC,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button{cursor:pointer;border:0}button:disabled{cursor:wait;opacity:.55}input,textarea,select{color:var(--ink)}button,input,textarea,select,summary{outline-offset:4px}:focus-visible{outline:2px solid #397db2}button{transition:background .15s,color .15s}p,h1,h2{margin:0}.hidden{display:none!important}.muted{color:var(--muted);font-size:14px;line-height:1.7}.brand{letter-spacing:3px;align-items:center;gap:11px;font-size:22px;font-weight:700;display:flex}.brand-mark{background:var(--blue);color:#fff;letter-spacing:0;border-radius:12px;place-items:center;width:36px;height:36px;font-family:Songti SC,SimSun,serif;font-size:20px;display:grid}.brand-mark.large{width:54px;height:54px;color:var(--blue);background:#e5edf6;border-radius:17px;font-size:32px}.login-screen{grid-template-columns:1.12fr 1fr;min-height:100dvh;display:grid}.login-art{isolation:isolate;background:#dbe6f0;align-items:center;padding:12%;display:flex;position:relative;overflow:hidden}.art-copy{z-index:1;position:relative}.art-copy h1{letter-spacing:3px;margin:34px 0 22px;font-family:Songti SC,SimSun,serif;font-size:clamp(30px,3.2vw,48px);font-weight:400;line-height:1.65}.art-copy p{color:#536d83;font-size:14px}.orbit{z-index:-1;border:1px solid #bfd0e0;border-radius:50%;width:600px;height:600px;position:absolute;bottom:-190px;right:-380px}.orbit-two{width:820px;height:820px;bottom:-300px;right:-490px}.orbit-three{width:1040px;height:1040px;bottom:-410px;right:-600px}.login-panel{background:#f9fbfd;place-items:center;padding:32px;display:grid}.login-box{width:min(100%,350px)}.login-box h2{margin-top:68px;font-size:28px;font-weight:600}.login-box>.muted{margin:12px 0 38px}.login-box label{margin-bottom:10px;font-size:14px;display:block}.login-box input{border:1px solid var(--line);background:#fff;border-radius:10px;width:100%;padding:16px}.primary{background:var(--blue);color:#fff;border-radius:8px;min-height:44px;padding:12px 23px}.primary:hover,.send-button:hover{background:#39658c}.login-box .primary{justify-content:space-between;align-items:center;width:100%;margin-top:8px;display:flex}.error{color:#a13c3c;min-height:20px;margin:10px 0;font-size:13px}.login-foot{color:var(--muted);text-align:center;margin-top:40px;font-size:12px}.app{height:100dvh;display:flex;overflow:hidden}.sidebar{border-right:1px solid var(--line);background:#fff;flex-direction:column;flex-shrink:0;width:284px;padding:32px 21px 20px;display:flex}.sidebar-brand{justify-content:space-between;align-items:center;display:flex}.sidebar-intro{color:var(--muted);margin:12px 0 30px;padding-left:47px;font-size:12px}.tabs{border-bottom:1px solid var(--line);gap:8px;margin-bottom:20px;display:flex}.tabs button{color:var(--muted);background:0 0;border-bottom:2px solid #0000;padding:12px 15px;font-size:14px}.tabs button[aria-selected=true]{color:var(--blue);border-color:var(--blue);font-weight:600}.search-wrap{background:var(--soft);color:var(--muted);border-radius:8px;align-items:center;gap:9px;padding:8px 11px;display:flex}.search-wrap span{font-size:24px;line-height:1}.search-wrap input{background:0 0;border:0;width:100%;min-width:0;height:24px;font-size:13px}.list-heading{color:var(--muted);justify-content:space-between;margin:26px 8px 12px;font-size:12px;display:flex}.sidebar-list{flex:1;margin:0 -8px;padding:0 5px;overflow:auto}.card-item{text-align:left;width:100%;color:var(--ink);background:0 0;border-radius:9px;align-items:center;gap:12px;min-height:70px;margin:3px 0;padding:14px 10px;display:flex}.card-item:hover{background:var(--soft)}.card-item.active{background:#eaf1f7}.card-item strong{font-size:14px;font-weight:600;line-height:1.6;display:block}.card-item small{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;max-width:168px;margin-top:3px;font-size:12px;display:block;overflow:hidden}.avatar{color:#356177;background:#dde8ef;border-radius:16px;flex-shrink:0;place-items:center;width:44px;height:48px;font-family:Songti SC,SimSun,serif;font-size:22px;display:grid;position:relative;overflow:hidden}.avatar:after{content:"";opacity:.3;border:1px solid;border-radius:50%;width:42px;height:42px;position:absolute;bottom:-25px;right:-25px}.avatar.small{border-radius:12px;width:40px;height:42px;font-size:19px}.avatar.hero{border-radius:25px;width:80px;height:90px;margin:0 auto;font-size:40px}.avatar[data-tone="1"]{color:#5b6089;background:#e2e4f3}.avatar[data-tone="2"]{color:#4f7164;background:#e1ede6}.avatar[data-tone="3"]{color:#8b6651;background:#f3e6de}.avatar[data-tone="4"]{color:#566375;background:#e6e8ec}.sidebar-bottom{padding-top:20px}.outline-button{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:8px;justify-content:center;align-items:center;gap:9px;min-height:44px;padding:10px 18px;display:flex}.sidebar-bottom>.outline-button{width:100%;font-size:14px}.outline-button:hover{background:var(--soft)}.bottom-actions{justify-content:space-between;margin-top:16px;display:flex}.bottom-actions button{color:var(--muted);background:0 0;min-height:32px;font-size:12px}.bottom-actions button:hover{color:var(--blue)}.chat-main{flex-direction:column;flex:1;min-width:0;display:flex}.chat-header{border-bottom:1px solid var(--line);background:#f6f9fb;flex-shrink:0;justify-content:space-between;align-items:center;height:90px;padding:0 38px;display:flex}.header-identity{align-items:center;gap:14px;display:flex}.header-identity h1{font-size:17px;font-weight:600;line-height:1.6}.header-identity p{color:var(--muted);margin-top:3px;font-size:12px}.header-actions{align-items:center;gap:14px;display:flex}.text-button{color:var(--muted);background:0 0;min-height:44px;padding:10px;font-size:13px}.text-button:hover{color:var(--blue)}.icon-button{width:44px;height:44px;color:var(--muted);background:0 0;border-radius:8px;flex-shrink:0;place-items:center;font-size:25px;display:grid}.icon-button:hover{color:var(--blue);background:#e8eff5}.model-bar{color:var(--muted);align-items:center;gap:7px;padding:14px 38px;font-size:12px;display:flex}.status-dot{background:#598c73;border-radius:50%;width:5px;height:5px}.model-bar select{max-width:210px;color:var(--muted);cursor:pointer;background:0 0;border:0;margin-left:auto;padding:7px;font-size:12px}.chat-scroll{overscroll-behavior:contain;scroll-behavior:smooth;flex:1;padding:25px 28px 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p{white-space:pre-wrap;color:#476379;margin-top:13px;font-size:14px;line-height:1.9}.messages{max-width:780px;margin:auto}.message{align-items:flex-start;gap:14px;margin:24px 0;display:flex}.message .avatar{border-radius:11px;width:33px;height:37px;font-size:17px}.message-body{min-width:40px;max-width:calc(100% - 47px)}.message-name{color:var(--muted);margin:0 0 8px;font-size:11px}.message-content{white-space:pre-wrap;overflow-wrap:anywhere;color:#344d61;background:#fff;border:1px solid #e0e8ee;border-radius:0 13px 13px;padding:17px 21px;font-size:15px;line-height:1.9}.message.user{flex-direction:row-reverse}.message.user .message-name{text-align:right}.message.user .message-content{background:#dfeaf3;border-color:#d5e2ed;border-radius:13px 0 13px 13px}.message.user .avatar{color:#49667c;background:#cfdfea;font-family:inherit;font-size:11px}.message-tools{gap:5px;margin-top:5px;display:flex}.message-tools button{min-height:32px;color:var(--muted);background:0 0;padding:5px 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summary{color:var(--muted);cursor:pointer;margin:12px 0 20px;font-size:13px}.dialog-footer{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding-top:18px;display:flex}.dialog-footer>div{gap:8px;margin-left:auto;display:flex}.danger{color:#a14f49;background:0 0;min-height:44px;padding:8px;font-size:13px}.danger-solid{color:#fff;background:#a14f49;border-radius:8px;min-height:44px;padding:10px 24px}.confirm-dialog{max-width:390px}.confirm-dialog h2{font-size:22px}.confirm-dialog p{color:var(--muted);margin:16px 0 25px;font-size:14px;line-height:1.8}.confirm-actions{justify-content:flex-end;gap:12px;display:flex}.toast{color:#fff;z-index:30;background:#263f55;border-radius:10px;max-width:calc(100% - 30px);padding:13px 22px;font-size:13px;line-height:1.6;position:fixed;bottom:30px;left:50%;transform:translate(-50%);box-shadow:0 5px 30px #17344c25}.empty-list{color:var(--muted);text-align:center;padding:40px 15px;font-size:13px;line-height:1.8}.chat-list-item{align-items:center;display:flex}.chat-list-item .card-item{flex:1;min-width:0}.chat-list-item .remove-chat{color:var(--muted);background:0 0;min-width:32px;min-height:44px;padding:8px;font-size:17px}.mobile-only{display:none}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes blink{to{visibility:hidden}}@media (width>=1400px){.chat-scroll{padding-top:40px}.welcome{margin-top:35px}.sidebar{width:310px;padding-left:28px;padding-right:28px}}@media (width<=760px){.login-screen{grid-template-columns:1fr}.login-art{display:none}.login-panel{min-height:100dvh}.login-box h2{margin-top:50px}.sidebar{z-index:20;width:286px;transition:transform .2s;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-backdrop{z-index:19;background:#17344c50;display:block;position:fixed;inset:0}.mobile-only{display:grid}.chat-header{height:77px;padding:0 12px}.header-identity{gap:8px}.header-identity h1{font-size:15px}.header-identity p{font-size:11px}.header-actions{gap:0}.model-bar{padding:8px 20px;font-size:11px}.model-bar select{max-width:165px;font-size:11px}.chat-scroll{padding:25px 16px}.welcome{margin-top:5px}.welcome h2{font-size:28px}.welcome-caption{margin-top:20px}.welcome .tags{margin-bottom:23px}.opening-note{padding:18px}.composer-area{padding:10px 15px max(16px,env(safe-area-inset-bottom))}.composer{padding:10px 10px 10px 15px}.composer textarea{font-size:16px}.composer-foot{font-size:10px}.message{gap:9px;margin:22px 0}.message-body{max-width:calc(100% - 41px)}.message-content{padding:13px 15px;font-size:14px}.form-grid{grid-template-columns:1fr;gap:0}dialog{padding:20px}.dialog-footer{gap:5px}.dialog-footer>div{gap:2px}.sidebar-list .remove-chat{min-width:44px}.search-wrap input{font-size:16px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.touch-hint{display:none}.text-button{white-space:nowrap}.header-identity,.header-identity>div:last-child{min-width:0}.header-actions{flex-shrink:0}@media (width<=760px){.header-identity{flex:1}.header-identity p{white-space:nowrap;text-overflow:ellipsis;max-width:120px;overflow:hidden}.header-actions .text-button{padding:10px 7px}.keyboard-hint{display:none}.touch-hint{display:inline}#export-chat:disabled{display:none}}