.communication-hub{position:fixed;top:120px!important;left:0;right:0;bottom:0;background:#f0f0f1;z-index:2000;display:flex;flex-direction:column}@media (max-width: 768px){.communication-hub{top:140px!important}}@media (max-width: 480px){.communication-hub{top:160px!important}}.communication-header{background:#fff;padding:20px 30px;border-bottom:1px solid #dcdcde;display:flex;justify-content:space-between;align-items:center;position:relative;z-index:10;flex-shrink:0}.communication-header-left{display:flex;align-items:center;gap:16px}.btn-back-communication{background:#f0f0f1;border:1px solid #dcdcde;padding:10px 16px;border-radius:6px;cursor:pointer;color:#1d2327;font-size:.95em;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:8px;min-width:auto;height:40px;font-weight:500}.btn-back-communication span{display:inline-block}.btn-back-communication:hover{background:#2271b1;border-color:#2271b1;color:#fff;transform:translate(-2px)}.communication-header 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