:root{--paper:#f7f6f2;--ink:#242d2c;--muted:#818780;--line:#e3e6de;--green:#315d4f;--sage:#dce6d8;--sidebar:#eeefe8;font-family:"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:14px}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.42}button,input,textarea{outline-offset:4px}button{color:inherit}button:hover:not(:disabled){filter:brightness(.95)}[hidden]{display:none!important}.app{height:100dvh;display:grid;grid-template-columns:284px minmax(0,1fr)}aside{display:flex;flex-direction:column;background:var(--sidebar);border-right:1px solid var(--line);padding:32px 22px 0}.brand{display:flex;align-items:center;gap:12px;margin-bottom:34px}.brand-icon{background:var(--green);color:white;display:grid;place-items:center;width:40px;height:40px;border-radius:12px;font:bold 30px Georgia}.wordmark{font-family:Georgia,"PingFang SC",serif;font-size:24px;font-weight:bold;letter-spacing:-1px}.wordmark small{display:block;font:11px "PingFang SC",sans-serif;letter-spacing:2px;color:var(--muted);margin-top:6px}.new-chat{border:1px solid #ccd7c7;background:#e1e9dc;border-radius:8px;padding:13px 12px;text-align:left;display:flex;align-items:center;gap:9px}.new-chat span{font-size:20px;font-weight:300}kbd{margin-left:auto;font:11px Georgia;color:#7f8c7a}.history-heading{display:flex;justify-content:space-between;margin:34px 8px 13px;font-size:11px;letter-spacing:1px;color:var(--muted)}nav{overflow:auto;flex:1;min-height:80px}.chat-item{display:block;text-overflow:ellipsis;overflow:hidden;white-space:nowrap;text-align:left;width:100%;border:0;background:transparent;border-radius:6px;padding:12px;font-size:13px;color:#657068;margin-bottom:3px}.chat-item.active{background:#dde2d7;color:#263e32}.empty-list{padding:12px;color:var(--muted);font-size:12px}.sidebar-bottom{padding:20px 5px 0}.quota-title{display:flex;align-items:center;justify-content:space-between;font-size:11px;letter-spacing:.5px}#quota-value{font-family:Georgia,"PingFang SC",serif;font-size:22px;margin:12px 0 8px}.sidebar-bottom small{color:var(--muted);line-height:1.7;font-size:10px;display:block}progress{width:100%;height:5px;border:0;background:#d4dccf;border-radius:5px;margin-bottom:8px}progress::-webkit-progress-bar{background:#d4dccf;border-radius:5px}progress::-webkit-progress-value{background:var(--green);border-radius:5px}.account{display:flex;gap:10px;align-items:center;border-top:1px solid var(--line);margin-top:25px;padding:20px 0;font-size:12px}.account .icon{margin-left:auto}.avatar{border-radius:50%;background:#d9e1d3;padding:10px;font-size:10px}main{min-width:0;display:flex;flex-direction:column}header{height:101px;padding:26px 42px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:12px}.eyebrow{font-size:10px;letter-spacing:2px;color:#91988d;font-weight:500}h2{margin:7px 0 0;font-size:15px;font-weight:500;max-width:34vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.header-actions{display:flex;gap:12px;align-items:center}.connection{font-size:11px;color:#92968e;white-space:nowrap}.connection:before{content:'';display:inline-block;height:6px;width:6px;border-radius:50%;background:#b9bdb4;margin-right:7px}.connection.online{color:var(--green)}.connection.online:before{background:#6b996b}.icon{border:0;background:transparent;font-size:19px;padding:4px;color:#7d877b}.control-toggle{background:transparent;border:1px solid var(--line);font-size:11px;border-radius:6px;padding:9px 12px}.control-panel{margin:20px 42px 0;background:#eff1e9;border:1px solid var(--line);padding:20px;border-radius:10px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}.control-panel strong{font-size:13px}.control-panel p,.control-panel small{font-size:11px;color:var(--muted);margin:8px 0 0}.control-panel small{width:100%}.control-buttons{display:flex;gap:8px}.control-buttons button{background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:8px 12px;font-size:12px}.scroll-area{flex:1;overflow:auto;scroll-behavior:smooth}.welcome{max-width:800px;margin:0 auto;text-align:center;padding:clamp(35px,9vh,110px) 40px 30px;animation:appear .5s ease}.orb{width:69px;height:69px;background:var(--sage);border:1px solid #cfdcc9;border-radius:23px;position:relative;font:italic 48px Georgia;color:var(--green);margin:0 auto 30px}.orb span{position:absolute;font:27px Georgia;top:-11px;right:-12px;color:#a2ad89}.welcome h1{font-family:"Songti SC","Noto Serif CJK SC",Georgia,serif;font-size:clamp(28px,3.4vw,40px);font-weight:400;letter-spacing:2px;margin:22px 0 15px}.welcome>p:not(.eyebrow){font-size:13px;color:var(--muted);letter-spacing:1px}.suggestions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:42px;text-align:left}.suggestions button{border:1px solid var(--line);background:#fafaf7;padding:18px;border-radius:9px;transition:transform .2s;text-align:left}.suggestions button:hover{transform:translateY(-3px)}.suggestions span{display:block;color:var(--green);font-size:18px;margin-bottom:16px}.suggestions strong,.suggestions small{display:block;font-size:12px;font-weight:400}.suggestions small{font-size:10px;color:var(--muted);margin-top:8px}.messages{max-width:860px;padding:25px 40px 10px;margin:auto}.message{margin:18px 0 28px;animation:appear .2s ease}.message-label{font-size:11px;color:var(--muted);letter-spacing:1px;margin-bottom:12px}.message.user{margin-left:18%}.message.user .message-body{background:#e8ede2;padding:16px 21px;border-radius:12px 3px 12px 12px}.message.assistant .message-body{padding:6px 0}.message-body{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.95;font-size:14px}.message-error{font-size:11px;color:#a56346;margin-top:9px}.copy{border:0;background:transparent;color:var(--muted);font-size:10px;margin-top:8px;padding:4px 0}footer{padding:15px 40px 20px;max-width:860px;width:100%;align-self:center}.composer{background:#fff;border:1px solid #dce0d5;box-shadow:0 4px 18px #263e3205;border-radius:15px;padding:18px 19px 11px}.composer:focus-within{border-color:#a6b89c}textarea{width:100%;border:0;resize:none;min-height:38px;max-height:170px;background:transparent;font-size:14px;line-height:1.6;outline:none;color:var(--ink)}textarea::placeholder{color:#a0a59c}.composer-bottom{display:flex;align-items:center;justify-content:space-between}.composer-bottom span{font-size:10px;color:#a1a79b}.send{background:var(--green);color:white;border:0;border-radius:9px;width:33px;height:33px;font-size:23px}.footnote{font-size:9px;color:#9ba193;margin:12px 5px 0;display:flex;justify-content:space-between;gap:10px}#notice{font-size:12px;line-height:1.6;color:#986c48;padding:0 8px 12px;min-height:17px}.mobile{display:none}.login{min-height:100dvh;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at 15% 10%,#e1e9d9,transparent 65%)}.login-card{width:100%;max-width:410px}.wordmark>span{font:10px Georgia;letter-spacing:2px;color:var(--muted);margin-left:12px}.login-line{height:1px;background:#cdd7c6;margin:30px 0 40px}.login h1{font:34px "Songti SC",Georgia,serif;margin:20px 0}.muted{font-size:12px;line-height:2;color:var(--muted)}.login label{display:block;font-size:12px;margin:32px 0 10px}.login input,dialog input{width:100%;padding:14px;border:1px solid #cdd7c6;background:#fbfcf9;border-radius:6px}.primary{border:0;background:var(--green);color:white;padding:13px 19px;border-radius:6px}.login .primary{margin-top:14px;width:100%;display:flex;justify-content:space-between}.login-error,#login-error{color:#a15b3d;font-size:12px}dialog{border:1px solid var(--line);border-radius:14px;background:var(--paper);padding:28px;width:min(420px,90vw);color:var(--ink)}dialog::backdrop{background:#1b302a60}dialog h3{margin-top:0;font-weight:500}dialog p{font-size:13px;line-height:1.8;color:var(--muted)}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}.dialog-actions button:not(.primary){border:0;background:transparent;padding:10px}@keyframes appear{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}@media(max-width:1050px){.app{grid-template-columns:245px minmax(0,1fr)}aside{padding:25px 16px 0}header{padding:22px}.header-actions{gap:8px}.connection{font-size:10px}.welcome{padding-left:24px;padding-right:24px}.suggestions{gap:8px}.suggestions button{padding:14px}.footnote span{display:none}footer{padding-left:24px;padding-right:24px}}@media(max-width:720px){.app{display:block}main{height:100dvh}.mobile{display:block}aside{position:fixed;top:0;bottom:0;left:0;width:280px;z-index:10;transform:translateX(-100%);transition:transform .2s;box-shadow:15px 0 50px #263e3220}aside.open{transform:translateX(0)}#close-menu{margin-left:auto}header{height:80px;justify-content:flex-start;padding:16px;gap:10px}.header-actions{margin-left:auto}.header-actions .icon{font-size:17px}.connection{max-width:94px;white-space:normal}.control-toggle{padding:7px;font-size:10px}h2{max-width:25vw;font-size:13px}.eyebrow{font-size:8px;letter-spacing:1px}.welcome{padding-top:65px}.welcome h1{font-size:28px}.suggestions{grid-template-columns:1fr;margin-top:28px}.suggestions button{display:grid;grid-template-columns:30px 1fr;align-items:center;gap:5px;padding:12px}.suggestions span{grid-row:span 2;margin:0}.suggestions small{margin:0}.messages{padding:20px}.message.user{margin-left:12%}footer{padding:10px 14px 15px}.control-panel{margin:12px 14px 0;padding:14px}.composer{padding:14px}.orb{margin-bottom:23px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important;transition:none!important}}