:root{--bg:#ffffff;--panel:#fff;--sidebar:#f3f5f8;--text:#243247;--muted:#627086;--line:#dde3ec;--accent:#285cc4;--accent-soft:#eaf0fc;--accent-hover:#204ca4;--green:var(--accent);--green-light:var(--accent-soft);--warning:#fbf5e9;--radius:14px;font-family:Microsoft YaHei UI,Microsoft YaHei,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft Yahei,sans-serif;color:var(--text);background:var(--bg);font-size:14px;line-height:1.65}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer;transition:background .16s,color .16s,box-shadow .16s;line-height:1.5}button:disabled{cursor:not-allowed;opacity:.43}a:focus-visible,button:focus-visible{outline:3px solid #9bb8f1;outline-offset:3px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);padding:10px 12px;outline:none}input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #285cc410}textarea{resize:vertical}label{display:block;font-size:12px;font-weight:500;color:var(--muted);margin:12px 0}label input,label textarea{margin-top:5px}h1,h2,h3,p{margin-top:0}h3{font-size:16px;line-height:1.7;margin-bottom:0;font-weight:600}p{margin-bottom:14px}small{font-size:11px;color:var(--muted)}fieldset{padding:0;border:0;margin:0;min-width:0}.eyebrow,.muted{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:.12em;display:block;margin-bottom:7px}.primary,.secondary{padding:9px 15px;border-radius:8px;border:1px solid transparent;font-size:12px;font-weight:500}.primary{background:var(--green);color:#fff}.primary:hover:not(:disabled){background:var(--accent-hover)}.secondary{background:#fff;border-color:var(--line);color:var(--text)}.secondary:hover:not(:disabled){background:var(--sidebar)}.text-button{background:none;border:0;color:var(--green);padding:4px 0;font-size:12px}.danger{color:#9f6455}.button-row{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0 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textarea{font-size:14px}.composer textarea::placeholder{color:var(--muted);opacity:.85}.composer-toolbar{gap:4px 8px;padding-bottom:10px}.new-thread:focus-visible,.search-launcher:focus-visible,.send-button:focus-visible,.thread-icon-button:focus-visible,.thread-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (hover:none),(pointer:coarse){.thread-row-tools{opacity:1;pointer-events:auto}.thread-icon-button{width:36px;height:40px}.send-button{width:44px;height:44px}}.work-panel{background:var(--sidebar);padding:22px}.business-card{box-shadow:none;border-radius:10px}.business-card.approval{border-color:#b9cbed;box-shadow:inset 3px 0 var(--accent)}.card-heading .eyebrow{letter-spacing:0;font-size:11px}.business-card p{font-size:13px}.settings-shell{background:var(--sidebar)}.settings-header h1{font-weight:600;letter-spacing:-.03em}.profile-editor,.profile-list{border-radius:12px}.profile-choice.selected{border-color:#b9cbed;box-shadow:inset 3px 0 var(--accent)}.archive-page{background:var(--sidebar)}.archive-header{background:var(--panel);border-bottom:1px solid var(--line)}.connection-settings-actions .primary{background:var(--accent);border-color:var(--accent)}.search-location{display:flex;align-items:center;gap:9px;padding:10px 24px;background:var(--accent-soft);border-bottom:1px solid #d5e0f6;color:var(--accent);font-size:12px}.search-location>span{flex:1 1}.search-target{background:#f4f7fe;outline:2px solid #a7c0f0;outline-offset:10px;border-radius:5px;scroll-margin:32px}.sidebar-backdrop{display:none}@media(max-width:760px){.sidebar{width:264px;min-width:264px;z-index:60;box-shadow:none}.sidebar-backdrop{display:block;position:fixed;inset:0;z-index:55;border:0;border-radius:0;background:#24324766}.topbar{padding-inline:16px;min-height:60px;gap:10px}.topbar-actions{gap:5px;margin-left:0}.welcome{padding:30px 26px 60px}.chat-content{padding:22px}.chat-message{gap:10px}.message-avatar{width:26px;height:26px;min-width:26px;font-size:12px}.search-location{padding-inline:16px}}@media(prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition:none!important;animation:none!important}}