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(max-width:560px){.shell{padding:0}.frame{border-radius:0;min-height:100vh}.conversation-header,.message-stream,.composer{padding-left:14px;padding-right:14px}.conversation-header{flex-direction:column;align-items:flex-start}.participant-strip{justify-content:flex-start}.composer-row,.sidebar-action-row,.profile-card,.selected-file-card,.composer-hint{grid-template-columns:1fr}.profile-card{grid-template-columns:auto 1fr}.profile-card .ghost-button{grid-column:1/-1}.message{max-width:92%}.message-meta-actions{flex-wrap:wrap}.reaction-picker{width:100%}}body .shell{background:#dfe4ea;padding:0}body .frame{min-height:100vh;box-shadow:none;border:0;border-radius:0;grid-template-columns:26rem minmax(0,1fr);gap:0}body .sidebar,body .conversation{box-shadow:none;border:0;border-radius:0}body .sidebar{color:#22313d;background:#fff;border-right:1px solid #dfe6ee;grid-template-rows:auto auto 1fr;position:relative}body .sheet-backdrop{z-index:20;background:#26364229;border:0;position:absolute;inset:58px 0 0}body .brand-card{background:#fff;border-bottom:0;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px 14px 8px;display:grid}body .brand-mark{color:#708499;background:0 0;border-radius:50%;width:40px;height:40px;min-height:40px;padding:0;font-size:1.35rem;font-weight:400}body .brand-copy .eyebrow{display:none}body .brand-copy h1{color:#22313d;font-size:1rem;font-weight:600}body .status-pill,body .profile-card{display:none}body .sidebar-actions{background:#fff;border-bottom:1px solid #edf1f4;padding:0 14px 10px}body .sidebar-actions .search-box{margin-top:0}body .sidebar-actions .search-box span{display:none}body .sidebar-actions .search-box input{color:#22313d;background:#f2f5f7;border:0;border-radius:22px;padding:13px 16px;box-shadow:inset 0 0 0 1px #0000}body .sidebar-actions .search-box input:focus{background:#eef5fb;box-shadow:inset 0 0 0 1px #86b8ee}body 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.forward-overlay{z-index:41;pointer-events:none;place-items:center;padding:24px;display:grid;position:fixed;inset:0}body .forward-overlay .forward-card{pointer-events:auto;background:#fff;border:1px solid #e1e8ee;width:min(100%,460px);max-height:min(82vh,720px);margin:0;box-shadow:0 18px 40px #1625302e}body .chat-preview-copy{flex:auto;align-items:center;gap:8px;min-width:0;display:inline-flex;overflow:hidden}body .chat-preview-copy span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}body .chat-kind-pill{color:#6d8191;text-transform:uppercase;letter-spacing:.04em;background:#eef3f7;border-radius:999px;flex:none;align-items:center;min-height:20px;padding:0 8px;font-size:.7rem;font-style:normal;display:inline-flex}body .chat-kind-pill-channel{color:#4a8dd9;background:#e7f1ff}body .chat-kind-pill-group{color:#3f9b77;background:#eaf8f2}body .sidebar-menu-sheet,body .profile-editor-card,body .create-chat-card,body .bot-admin-card,body .notifications-card,body 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.conversation-subtitle{text-overflow:ellipsis;white-space:nowrap;color:#7e8d9a;display:block;overflow:hidden}body .conversation-header-actions{flex:none;align-items:center;gap:8px;display:flex}body .mobile-back-button,body .participant-manage-button{color:#536472;background:#f1f5f8;border:1px solid #dde6ed;border-radius:14px;min-height:38px;padding:0 14px}body .mobile-back-button:hover,body .participant-manage-button:hover{background:#e7edf2}body .header-icon-button{border-radius:50%;width:38px;min-width:38px;min-height:38px;padding:0;font-size:1rem}body .header-icon-button-active{color:#3b82d0;background:#e3f0fd}body .message-stream{overscroll-behavior:contain;-webkit-overflow-scrolling:touch;background:0 0;min-height:0;padding:18px 24px;overflow-y:auto}body .pinned-banner,body .thread-banner{background:#ffffffc7;border-bottom:1px solid #d4dde4eb}body .foreground-banner{background:#ffffffeb;border:1px solid #d4dde4eb;border-radius:18px;grid-template-columns:minmax(0,1fr) 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.message-action-menu{z-index:4;background:#fffffff0;border-radius:14px;gap:4px;min-width:170px;padding:6px;display:grid;position:absolute;top:34px;right:10px;box-shadow:0 8px 24px #2f44521f}body .message-action-item{color:#2f4050;text-align:left;background:0 0;border:0;border-radius:10px;width:100%;min-height:36px;padding:0 12px}body .message-action-item:hover{background:#eef3f7}body .message-action-item-danger{color:#d04b53}body .message-reply,body .reply-preview{background:#5da8f71a;border-left-color:#5da8f7}body .attachment{background:#fffc}body .composer{background:#ffffffd1;border-top:1px solid #d3dce3f0;gap:10px;height:auto;padding:12px 18px 16px}body .composer-row{grid-template-columns:minmax(0,1fr);align-items:center;gap:0;height:auto}body .composer-shell{background:#fff;border:1px solid #d9e2ea;border-radius:24px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;width:100%;height:auto;min-height:56px;padding:8px 10px;display:grid;box-shadow:0 1px 2px 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