:root{--wx-bg: #ededed;--wx-panel: #f7f7f7;--wx-card: #ffffff;--wx-line: #e5e5e5;--wx-text: #191919;--wx-muted: #7a7a7a;--wx-soft: #f2f2f2;--wx-green: #07c160;--wx-green-dark: #06ad56;--wx-bubble: #95ec69;color:var(--wx-text);background:var(--wx-bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:var(--wx-bg)}button,input,textarea{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:not-allowed;opacity:.52}.login-shell{display:grid;min-height:100vh;place-items:center;padding:24px;background:var(--wx-bg)}.login-panel{width:min(420px,100%);padding:32px;border:1px solid var(--wx-line);border-radius:8px;background:var(--wx-card);box-shadow:0 14px 42px #0f0f0f1a}.login-mark{display:grid;width:42px;height:42px;place-items:center;border-radius:8px;color:#fff;background:var(--wx-green)}.login-panel h1{margin:18px 0 24px;font-size:26px;letter-spacing:0}.login-form{display:grid;gap:16px}.login-form label{display:grid;gap:8px;font-size:14px;color:var(--wx-muted)}.login-form input{width:100%;height:42px;border:1px solid var(--wx-line);border-radius:6px;padding:0 12px;color:var(--wx-text);background:var(--wx-card)}.login-form input:focus,.composer textarea:focus{border-color:var(--wx-green);outline:3px solid 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span{display:grid;gap:2px}.quota-grid small{color:#9a9a9a}.quota-grid strong{color:var(--wx-text);font-weight:650}.agent-list{display:grid;gap:8px}.agent-item{display:grid;width:100%;min-width:0;border:1px solid transparent;border-radius:8px;text-align:left;background:transparent}.agent-item{grid-template-columns:auto minmax(0,1fr);gap:10px;padding:12px;color:var(--wx-muted)}.agent-item.active{border-color:#07c16047;color:var(--wx-green-dark);background:#e8f8ef}.agent-item:hover{background:#fff}.agent-item span,.history-item span,.agent-current span{display:grid;min-width:0;gap:3px}.agent-item strong,.history-item strong,.agent-current strong{overflow:hidden;color:var(--wx-text);font-size:14px;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.agent-item small,.history-item small,.agent-current small{overflow:hidden;color:var(--wx-muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.history-section{display:grid;min-height:0;overflow:hidden;grid-template-rows:auto 36px auto 30px 28px minmax(0,1fr);gap:8px}.section-title{color:#4f4f4f;font-size:13px;font-weight:700}.history-search{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;height:36px;min-height:36px;max-height:36px;overflow:hidden;gap:8px;border:1px solid var(--wx-line);border-radius:8px;padding:0 10px;color:var(--wx-muted);background:var(--wx-card)}.history-search input{min-width:0;width:100%;height:34px;line-height:34px;border:0;color:var(--wx-text);background:transparent;outline:0}.history-filter-row,.history-filter-actions{display:flex;flex-wrap:wrap;gap:6px}.filter-chip{display:inline-flex;align-items:center;min-height:28px;border:1px solid var(--wx-line);border-radius:999px;gap:4px;padding:0 9px;color:#4f4f4f;background:var(--wx-card);font-size:12px}.filter-chip.active{border-color:#07c16047;color:var(--wx-green-dark);background:#e8f8ef}.history-date-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto 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5px}.mini-action,.delete-button{display:grid;width:26px;height:26px;place-items:center;border:0;border-radius:5px;color:#8a8a8a;background:transparent}.mini-action:hover,.mini-action.active{color:var(--wx-green-dark);background:#e8f8ef}.delete-button:hover{color:#c2413b;background:#fdeceb}.chat-workspace{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;background:var(--wx-bg)}.chat-head{min-height:76px;border-bottom:1px solid var(--wx-line);padding:16px 22px;background:var(--wx-panel)}.agent-current{display:flex;align-items:center;min-width:0;gap:10px}.head-actions{display:flex;align-items:center;flex-wrap:wrap;justify-content:flex-end;gap:10px}.app-alert{margin:12px 22px 0;border:1px solid #efc7c3;border-radius:6px;padding:10px 12px;color:#9f2f2a;background:#fff1ef;font-size:13px}.message-list{display:grid;flex:1 1 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.message-bubble:after{position:absolute;top:13px;width:0;height:0;content:"";border-top:6px solid transparent;border-bottom:6px solid transparent}.message-row:not(.user) .message-bubble:before{left:-6px;border-right:6px solid var(--wx-card)}.message-row.user .message-bubble:after{right:-6px;border-left:6px solid var(--wx-bubble)}.message-row.error .message-bubble:before{border-right-color:#fff1ef}.copy-button{position:absolute;top:7px;right:7px;display:grid;width:26px;height:26px;place-items:center;border:0;border-radius:5px;color:var(--wx-muted);background:#0000000f;opacity:0;transition:opacity .15s ease}.message-bubble:hover .copy-button{opacity:1}.copy-button+.message-content{padding-right:26px}.message-content{overflow-x:auto;word-break:break-word;line-height:1.65}.message-content>:first-child{margin-top:0}.message-content>:last-child{margin-bottom:0}.message-content p,.message-content ul,.message-content ol,.message-content blockquote,.message-content pre,.message-content table{margin:0 0 10px}.message-content ul,.message-content ol{padding-left:20px}.message-content code{border-radius:4px;padding:2px 4px;background:#00000012;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:.92em}.message-content pre{overflow:auto;border-radius:6px;padding:10px;background:#f3f3f3}.message-content pre code{padding:0;background:transparent}.message-content table{display:block;overflow-x:auto;border-collapse:collapse;max-width:100%;font-size:13px}.message-content th,.message-content td{border:1px solid #d9d9d9;padding:6px 8px;white-space:nowrap}.message-content th{background:#0000000a;font-weight:700}.message-content a{color:var(--wx-green-dark)}.message-row.user .message-content a{color:#14532d}.asset-strip,.file-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.asset-strip img{width:96px;height:96px;border-radius:6px;object-fit:cover}.file-strip a{max-width:240px;overflow:hidden;border-radius:6px;padding:6px 8px;color:inherit;text-overflow:ellipsis;white-space:nowrap;background:#0000000f}.composer{display:grid;flex:0 0 auto;align-content:start;align-self:stretch;gap:10px;max-height:220px;overflow-x:hidden;overflow-y:auto;border-top:1px solid var(--wx-line);padding:14px 22px 18px;background:var(--wx-panel)}.quick-prompts{display:flex;flex-wrap:nowrap;gap:8px;height:30px;overflow-x:auto;overflow-y:hidden;padding-bottom:2px}.quick-prompts button{flex:0 0 auto;height:28px;min-height:28px;border:1px solid var(--wx-line);border-radius:999px;padding:0 10px;color:#4f4f4f;background:var(--wx-card);font-size:12px;line-height:26px;white-space:nowrap}.quick-prompts button:hover{border-color:#07c16047;color:var(--wx-green-dark);background:#e8f8ef}.composer-row{display:grid;grid-template-columns:38px 38px minmax(0,1fr) auto;gap:10px;align-items:center}.composer textarea{width:100%;height:42px;min-height:42px;max-height:42px;resize:none;overflow-y:auto;border:1px solid transparent;border-radius:8px;padding:10px 12px;color:var(--wx-text);background:var(--wx-card)}.send-button,.stop-button{min-width:90px;padding:0 14px}.attachment-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px}.attachment-card{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;min-width:0;gap:9px;border:1px solid var(--wx-line);border-radius:8px;padding:7px;color:#4f4f4f;background:var(--wx-card)}.attachment-card.error{border-color:#efc7c3;background:#fff8f7}.attachment-preview{display:grid;width:44px;height:44px;place-items:center;overflow:hidden;border-radius:6px;color:var(--wx-green-dark);background:#e8f8ef;text-decoration:none}.attachment-preview img{width:100%;height:100%;object-fit:cover}.attachment-preview.file{background:#f0f3f2}.attachment-meta{display:grid;min-width:0;gap:4px}.attachment-meta strong,.attachment-meta small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-meta strong{color:var(--wx-text);font-size:13px}.attachment-meta small{color:var(--wx-muted);font-size:12px}.attachment-card.error .attachment-meta small{color:#b3342e}.attachment-actions{display:flex;gap:4px}.upload-meter{overflow:hidden;height:4px;border-radius:999px;background:#e9e9e9}.upload-meter span{display:block;height:100%;border-radius:inherit;background:var(--wx-green)}.error-text{margin:0;color:#b3342e;font-size:13px}.compact{font-size:12px}.empty-line{margin:12px 0;color:var(--wx-muted);font-size:13px;text-align:center}.cursor{display:inline-block;width:7px;height:1em;margin-left:3px;vertical-align:-2px;background:currentColor;animation:blink 1s steps(2,start) infinite}.spin{animation:rotate .8s linear infinite}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.desktop-hidden{display:none}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;display:grid;place-items:center;padding:18px;background:#00000047}.rename-dialog{display:grid;width:min(420px,100%);gap:16px;border-radius:8px;padding:20px;background:var(--wx-card);box-shadow:0 18px 56px #0000002e}.rename-dialog h2{margin:0;font-size:18px;letter-spacing:0}.rename-dialog input{width:100%;height:40px;border:1px solid var(--wx-line);border-radius:6px;padding:0 10px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px}@keyframes blink{50%{opacity:0}}@keyframes rotate{to{transform:rotate(360deg)}}@media(max-width:860px){.app-shell{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr);height:auto;min-height:100vh}.sidebar{grid-template-rows:auto auto auto;border-right:0;border-bottom:1px solid var(--wx-line)}.history-section{max-height:220px}.chat-workspace{min-height:70vh}.message-bubble{max-width:calc(100vw - 86px)}.composer-row{grid-template-columns:38px 38px minmax(0,1fr)}.send-button{grid-column:1 / -1}}@media(max-width:520px){.login-panel{padding:24px}.sidebar,.chat-head,.message-list,.composer{padding-left:14px;padding-right:14px}.quota-grid{grid-template-columns:1fr}}