:root{--ink:#202943;--muted:#8992a9;--primary:#5561e9;--primary-dark:#424dcc;--line:#e9edf5;--soft:#f4f6fc;--green:#28b991;--orange:#e8a346;--app-height:100dvh;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;font-synthesis:none;color:var(--ink);background:#f5f7fd}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,label.upload-label{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #aab1ff;outline-offset:3px}button,svg{flex-shrink:0}svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}a{color:inherit;text-decoration:none}button{border:0}button,input,textarea{color:var(--ink)}[hidden]{display:none!important}.page{max-width:1420px;padding:34px 68px 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150px));min-height:570px;background:white;border:1px solid #e5eaf6;border-radius:24px;box-shadow:0 18px 65px #455b9b0d;display:flex;flex-direction:column;overflow:hidden;position:relative}.chat-header{height:92px;min-height:92px;padding:21px 25px;display:flex;align-items:center;border-bottom:1px solid var(--line);gap:13px}.agent-avatar-wrap{position:relative}.agent-avatar-wrap img{width:48px;height:48px;border-radius:16px;object-fit:cover;display:block}.presence-dot{width:11px;height:11px;border:2px solid #fff;position:absolute;right:-2px;bottom:0;background:#b1b8c8;border-radius:50%}.presence-dot.online,.status-dot.online{background:var(--green)}.presence-dot.away,.presence-dot.busy,.status-dot.away,.status-dot.busy{background:var(--orange)}.agent-heading h2{font-size:15px;font-weight:700;margin:0 0 7px}.agent-heading 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