:root{--ink:#222222;--muted:#808080;--line:#e6e6e6;--paper:#f6f6f6;--blue:#5c5c5c;--dark:#1b1b1b}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.5}a{color:inherit;text-decoration:none}header{height:88px;display:flex;align-items:center;justify-content:space-between;padding:0 42px;background:#ffffff;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;font-size:24px;font-weight:650;letter-spacing:2px}.brand-mark{display:grid;place-items:center;width:42px;height:45px;background:var(--dark);color:#ffffff;font-family:serif;font-weight:400;clip-path:polygon(0 0,100% 0,100% 77%,50% 100%,0 77%);padding-bottom:4px}.brand-sub{display:block;font-size:9px;letter-spacing:2.6px;margin-top:4px;font-weight:500;color:var(--muted)}nav{display:flex;align-items:center;gap:34px}.nav-label{font-size:12px;color:var(--muted)}.admin-link{font-size:12px;border:1px solid var(--line);padding:11px 16px;border-radius:6px;background:#ffffff}.admin-link span{margin-left:15px}.workspace{max-width:1680px;margin:auto;display:flex;min-height:calc(100vh - 140px)}.sidebar{width:246px;flex-shrink:0;padding:31px 21px 22px;border-right:1px solid var(--line);display:flex;flex-direction:column;background:#fbfbfb}.sidebar-heading{display:flex;align-items:center;justify-content:space-between}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:600;color:var(--muted)}.square{border:0;background:none;font-size:23px;color:var(--muted)}.new-chat{margin:26px 0 30px;background:var(--dark);border:0;color:#ffffff;padding:14px;border-radius:7px;text-align:left;font-size:12px}.section-caption{font-size:11px;color:#a2a2a2;margin:0 9px 14px}.conversation-list{display:flex;flex-direction:column;gap:6px;max-height:440px;overflow:auto}.conversation-item{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;border:0;text-align:left;background:transparent;padding:12px 10px;border-radius:6px;color:#6f6f6f;font-size:12px}.conversation-item:hover,.conversation-item.active{background:#ededed;color:var(--ink)}.sidebar-foot{margin-top:auto;padding-top:50px;font-size:11px;color:#646464;line-height:1.8}.sidebar-foot p{color:#a2a2a2;font-size:10px;line-height:1.9}.status-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:#8f8f8f;margin-right:6px}main{min-width:0;flex:1;padding:30px 5% 16px}.hero{position:relative;max-width:1080px;margin:auto}.hero-top{display:flex;align-items:center;gap:18px;font-size:9px;letter-spacing:1.5px;color:#949494}.hero-rule{height:1px;background:#e0e0e0;flex:1}.small-caps{font-size:8px;letter-spacing:1px}.hero-copy{position:relative;padding-top:47px;z-index:1;width:65%}.hero-copy .eyebrow{display:flex;align-items:center;gap:7px;color:#666666;letter-spacing:2px}.hero-copy i{width:5px;height:5px;background:#777777;border-radius:50%}h1{font-weight:500;letter-spacing:-2px}.hero h1{font-size:clamp(42px,4.8vw,72px);line-height:1.2;margin:23px 0}.serif{font-family:"STSong","SimSun",serif;font-weight:400;color:#6b6b6b}.hero-copy p{font-size:12px;line-height:2.1;color:#858585}.hero-tags{display:flex;gap:20px;margin-top:26px;color:#858585;font-size:10px}.hero-tags span{white-space:nowrap}.orb-art{position:absolute;right:1%;top:73px;width:300px;height:300px;display:grid;place-items:center;pointer-events:none}.orb{width:170px;height:170px;border-radius:50%;background:radial-gradient(circle at 32% 25%,#fcfcfc 0,#e3e3e3 27%,#9d9d9d 65%,#565656 90%);box-shadow:17px 27px 47px #7171712e,inset -13px -10px 30px #39393945;display:grid;place-items:center;transform:rotate(-12deg)}.orb span{font-size:80px;color:#ffffff99;font-family:serif;text-shadow:1px 2px 6px #49494930}.orbit{position:absolute;inset:38px -5px;border-radius:50%;border:1px solid #b7b7b76b;transform:rotate(-35deg) scaleY(.48)}.orbit-two{inset:8px 32px;transform:rotate(35deg) scaleX(.61)}.orb-label{position:absolute;bottom:0;right:7px;font-size:8px;line-height:1.7;letter-spacing:2px;color:#a0a0a0}.suggestions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:38px 0 26px}.suggestions button{background:#ffffff9c;border:1px solid var(--line);padding:18px;text-align:left;border-radius:8px;transition:transform .2s,border-color .2s}.suggestions button:hover{transform:translateY(-3px);border-color:#a5a5a5}.suggestions span{font-size:9px;color:#a3a3a3;letter-spacing:1px;display:block}.suggestions strong{font-size:11px;font-weight:500;display:block;margin-top:12px}.composer-dock{max-width:1080px;margin:0 auto}.composer-top{display:flex;align-items:center;justify-content:space-between;margin:17px 0 12px;gap:12px}.model-picker{display:flex;align-items:center;min-width:0;gap:8px}.mini-logo{font-size:21px;color:#6f6f6f}.model-picker select{border:0;background:transparent;color:#545454;font-size:11px;font-weight:600;max-width:280px;outline-offset:4px}.availability{font-size:10px;color:#848484;text-align:right}.availability.closed{color:#8c8c8c}.composer{border:1px solid #dedede;border-radius:12px;background:#ffffff;box-shadow:0 8px 25px #37373707;padding:18px 19px 12px}.composer:focus-within{border-color:#949494;box-shadow:0 5px 20px #3737370b}textarea{resize:vertical;width:100%;border:0;outline:0;min-height:62px;max-height:240px;background:transparent;color:var(--ink);line-height:1.7;font-size:13px}textarea::placeholder{color:#adadad}.composer-bottom{display:flex;justify-content:space-between;align-items:center}.composer-bottom>span{font-size:9px;color:#acacac}#send{border:0;border-radius:6px;color:#ffffff;background:var(--dark);padding:11px 19px;font-size:11px}#send span{margin-left:13px}.under-composer{display:flex;justify-content:space-between;margin-top:12px;color:#a9a9a9;font-size:9px;gap:10px}.error{color:#5b5b5b!important;font-size:12px;line-height:1.7}.error:empty{display:none}.thread{max-width:1080px;margin:auto;min-height:400px}.thread-heading{display:flex;justify-content:space-between;gap:16px;align-items:center;border-bottom:1px solid var(--line);padding:10px 0 23px}.thread-heading h2{font-size:21px;font-weight:500;margin-bottom:0;overflow-wrap:anywhere}.text-button{border:0;background:transparent;color:#878787;font-size:11px;padding:8px 0}.text-button:hover{color:var(--ink)}#messages{padding:15px 0;max-height:58vh;overflow:auto;scrollbar-width:thin}.message{display:flex;gap:15px;padding:21px 8px;line-height:1.9}.message>div:last-child{min-width:0;flex:1}.avatar{width:29px;height:30px;display:grid;place-items:center;flex-shrink:0;background:#e5e5e5;color:#696969;font-size:12px;border-radius:6px}.assistant .avatar{background:var(--dark);color:white;font-family:serif}.message-name{font-size:9px;letter-spacing:1px;color:#9c9c9c}.message-content{white-space:pre-wrap;overflow-wrap:anywhere;margin-top:6px;font-size:13px}.thinking .message-content{color:#a4a4a4;animation:pulse 1.5s infinite}@keyframes pulse{50%{opacity:.5}}footer{border-top:1px solid var(--line);padding:18px 42px;display:flex;gap:24px;color:#a4a4a4;font-size:8px;letter-spacing:1.3px}footer span{letter-spacing:1px}footer a{margin-left:auto}.hidden{display:none!important}.admin-main{max-width:1200px;margin:auto;padding:45px 30px 70px}.admin-title h1{font-size:40px;letter-spacing:-1px;margin:18px 0}.admin-title p{font-size:12px;color:var(--muted);line-height:1.8}.notice{min-height:22px;color:#777777;font-size:12px}.admin-card{background:#ffffff;border:1px solid var(--line);padding:28px;border-radius:12px}.admin-card h2{font-size:20px;font-weight:500;margin:13px 0 23px}.login-card{max-width:440px;margin:30px auto}.admin-card label{font-size:12px;display:flex;flex-direction:column;gap:9px;color:#747474;margin:16px 0}.admin-card input:not([type=checkbox]),.admin-card select{width:100%;border:1px solid #e0e0e0;border-radius:6px;padding:11px 12px;background:#fbfbfb;color:var(--ink);min-width:0}.admin-card input:focus,.admin-card select:focus{outline:2px solid #bfbfbf}.primary,.secondary{border:0;background:var(--dark);color:#ffffff;border-radius:6px;padding:13px 20px;font-size:12px}.secondary{background:#f2f2f2;color:#606060}.login-card .primary{width:100%;margin-top:15px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:25px 0}.stat-grid>div{padding:24px;border:1px solid var(--line);background:#ffffff;border-radius:10px}.stat-grid span,.stat-grid small{display:block;font-size:11px;color:var(--muted)}.stat-grid strong{display:block;font-size:30px;font-weight:500;margin:15px 0 10px}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.card-heading{display:flex;align-items:center;justify-content:space-between}.card-heading h2{margin-bottom:5px}.help{font-size:11px;line-height:1.9;color:#959595}.field-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.full{grid-column:1/-1}.model-checks{display:flex;flex-wrap:wrap;gap:12px}.model-checks label{flex-direction:row;align-items:center;background:#f6f6f6;border-radius:6px;padding:13px;margin:0;overflow-wrap:anywhere;min-width:0}.model-checks input{accent-color:#5c5c5c}.save-bar{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:22px 0}.save-bar span{font-size:11px;color:var(--muted)}.extras{margin-top:15px}.switch{display:block!important;width:43px;height:25px;position:relative;margin:0!important}.switch input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer;z-index:2}.switch span{display:block;border-radius:20px;background:#d4d4d4;height:25px}.switch span:after{content:'';display:block;width:19px;height:19px;position:absolute;top:3px;left:3px;background:#ffffff;border-radius:50%;transition:transform .2s}.switch input:checked+span{background:#686868}.switch input:checked+span:after{transform:translateX(18px)}.switch input:focus-visible+span{outline:2px solid #bfbfbf}
@media(min-width:1550px){.hero-copy{padding-top:65px}.orb-art{right:7%;top:95px}.suggestions{margin-top:52px}main{padding-top:40px}}
@media(max-width:1050px){header{padding:0 25px}.sidebar{width:200px;padding-left:16px;padding-right:16px}main{padding:25px 4% 15px}.orb-art{width:220px;height:240px;right:-14px;top:95px}.orb{width:130px;height:130px}.orb span{font-size:60px}.hero-copy{width:75%}.hero-tags{gap:10px;font-size:9px}.small-caps{display:none}.suggestions button{padding:13px}.suggestions strong{font-size:10px}.nav-label{display:none}}
@media(max-width:700px){header{height:73px;padding:0 18px}.brand{font-size:21px;gap:9px}.brand-mark{width:34px;height:38px;font-size:21px}.brand-sub{font-size:7px;letter-spacing:1.5px}.admin-link{padding:10px 12px;font-size:10px}.admin-link span{margin-left:7px}nav{gap:13px}.workspace{display:block;min-height:calc(100vh - 130px)}.sidebar{width:auto;border-right:0;border-bottom:1px solid var(--line);padding:10px 18px;display:flex;flex-direction:row;align-items:center;gap:10px;overflow:hidden}.sidebar-heading,.section-caption,.sidebar-foot{display:none}.new-chat{margin:0;white-space:nowrap;padding:10px;font-size:10px}.conversation-list{flex-direction:row;overflow:auto;max-height:none;min-width:0;flex:1;scrollbar-width:thin}.conversation-item{max-width:145px;flex-shrink:0;padding:9px;font-size:10px}main{padding:25px 21px 20px}.hero-top{font-size:8px}.hero-copy{padding-top:35px;width:100%}.hero h1{font-size:49px;line-height:1.25;margin:20px 0}.hero-copy p{font-size:10px;max-width:85%;line-height:2}.hero-copy .eyebrow{font-size:9px}.orb-art{right:-7px;top:83px;width:150px;height:170px;opacity:.72}.orb{width:90px;height:90px}.orb span{font-size:43px}.orbit{inset:30px -2px}.orbit-two{inset:10px 22px}.orb-label{display:none}.hero-tags{gap:12px;font-size:8px;margin-top:22px}.suggestions{gap:7px;margin:25px 0 22px}.suggestions button{padding:12px 9px}.suggestions span{font-size:8px}.suggestions strong{font-size:10px;line-height:1.8}.composer-top{align-items:flex-start;gap:7px}.model-picker select{max-width:190px;font-size:10px}.availability{font-size:9px;max-width:120px;line-height:1.6}.mini-logo{font-size:18px}.composer{padding:14px 13px 10px}textarea{font-size:12px;min-height:67px}.composer-bottom>span{font-size:8px}#send{padding:10px 15px}.under-composer{font-size:8px;line-height:1.7}.under-composer>span:last-child{text-align:right}footer{padding:17px 20px;font-size:7px;gap:12px}footer span{font-size:8px;letter-spacing:0}.thread{min-height:300px}.thread-heading h2{font-size:17px}.thread-heading .eyebrow{font-size:8px}.thread-heading .text-button{font-size:10px;white-space:nowrap}.message{gap:10px;padding:17px 0}.message-content{font-size:12px}.admin-main{padding:30px 18px 50px}.admin-title h1{font-size:30px}.stat-grid{gap:8px}.stat-grid>div{padding:16px 10px}.stat-grid strong{font-size:21px}.stat-grid span,.stat-grid small{font-size:9px}.admin-grid{grid-template-columns:1fr}.admin-card{padding:23px 19px}.field-pair{gap:10px}.admin-card label{font-size:10px}.admin-card input:not([type=checkbox]),.admin-card select{font-size:11px;padding:10px 8px}.save-bar span{font-size:10px;max-width:45%}.primary{padding:12px 16px;font-size:11px}.model-checks label{font-size:11px}.admin-title p{font-size:11px}}