:root{--mg-ink:#0a2342;--mg-text:#12283c;--mg-muted:#5a7284;--mg-muted2:#93a9b6;--mg-brand:#0798a8;--mg-brand-dark:#046d7a;--mg-brand-bg:#e4f6f8;--mg-turquoise:#00b6c7;--mg-cta:#f0a83f;--mg-cta-ink:#fff;--mg-bg:#f5fafb;--mg-panel:#fff;--mg-border:#dcebee;--mg-keyline:linear-gradient(90deg,#0a2342 0%,#0798a8 45%,#00b6c7 78%,#f0a83f 100%);--st-prop-bg:#fdf3d7;--st-prop-fg:#95680a;--st-go-bg:#dff5e6;--st-go-fg:#1d7a43;--st-doing-bg:#e0f0fb;--st-doing-fg:#20618f;--st-done-bg:#e8eef2;--st-done-fg:#4a6373;--st-ng-bg:#fdecea;--st-ng-fg:#c0392b;--st-hold-bg:#f0f1f1;--st-hold-fg:#7a8489;--mg-radius-s:8px;--mg-radius-m:10px;--mg-radius-l:14px;--mg-shadow-card:0 2px 10px #0a505c0f;--mg-shadow-float:0 12px 40px #0a234238;--mg-focus-ring:#c8ecf0;--text:var(--mg-text);--muted:var(--mg-muted);--muted2:var(--mg-muted2);--bg:var(--mg-bg);--chat-bg:#edf4f6;--panel:var(--mg-panel);--border:var(--mg-border);--accent:var(--mg-brand);--accent-dark:var(--mg-brand-dark);--accent-weak:var(--mg-brand-bg);--bubble-mine:var(--mg-brand-bg);--bubble-other:var(--mg-panel);--mention:var(--st-prop-fg);--mention-bg:var(--st-prop-bg);--badge:var(--mg-cta);--danger:var(--st-ng-fg);--ok:var(--st-go-fg);--line-green:#06c755;--line-green-bg:#e4f9ec;--line-green-border:#b7ecc7;--line-green-ink:#0a7a3d;--line-win-bg:#eef1ef;--line-win-border:#dfe4e1;--line-win-muted:#8a8f8c;--line-mine:#8fe058;--line-mine-ink:#173d0a;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font:15px/1.7 system-ui,Hiragino Sans,Noto Sans 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label{color:var(--muted);flex-direction:column;gap:5px;font-size:13px;display:flex}.login-card input{border:1px solid var(--border);background:#fff;border-radius:8px;padding:10px 12px;font-size:16px}.login-card input:focus{outline:2px solid var(--accent);outline-offset:-1px}.login-error{color:var(--danger);font-size:13px}.login-ok{color:var(--ok);font-size:13px}.login-link{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:4px;font-size:13px}.login-note{color:var(--muted2);margin:0;font-size:12px}.btn{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;border-radius:9px;padding:10px 14px}.btn.primary{background:var(--mg-cta);border-color:var(--mg-cta);color:var(--mg-cta-ink);font-weight:700}.btn.primary:hover{filter:brightness(1.06)}.btn.primary:disabled{opacity:.5}.btn.ghost{background:0 0}.btn.danger{color:var(--danger);border-color:var(--danger)}.apphead{padding:10px 12px;padding-top:calc(10px + env(safe-area-inset-top));background:var(--panel);z-index:5;flex:none;align-items:center;gap:8px;display:flex;position:relative}.apphead:after{content:"";background:var(--mg-keyline);height:2.5px;position:absolute;bottom:0;left:0;right:0}.apphead .title{color:var(--mg-ink);white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:16px;font-weight:700;overflow:hidden}.apphead .sub{color:var(--muted);font-size:12px;font-weight:400}.search-bar{background:var(--panel);border-bottom:1px solid var(--border);flex:none;align-items:center;gap:4px;padding:8px 12px;display:flex}.search-input{border:1px solid var(--border);background:var(--bg);min-width:0;color:var(--text);border-radius:8px;flex:1;padding:7px 10px;font-size:14px}.search-count{color:var(--muted2);white-space:nowrap;text-align:right;min-width:44px;padding:0 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14px;display:block}.xsearch-row:active{background:var(--accent-weak)}.xsearch-row-top{justify-content:space-between;gap:8px;margin-bottom:3px;display:flex}.xsearch-room{color:var(--mg-ink);font-size:13px;font-weight:600}.xsearch-time{color:var(--muted2);flex:none;font-size:11px}.xsearch-snippet{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.chat-screen{background:var(--chat-bg);flex-direction:column;flex:1;min-height:0;display:flex}.msg-scroll{flex:1;padding:10px 10px 4px;overflow-y:auto}.load-more{margin:4px auto 12px;font-size:12px;display:block}.day-sep{place-items:center;margin:10px 0;display:grid}.day-sep span{color:var(--muted);background:#00000014;border-radius:999px;padding:2px 12px;font-size:11px}.msg-row{align-items:flex-end;gap:8px;margin:2px 0 10px;display:flex}.msg-row.mine{flex-direction:row-reverse}.msg-highlight{border-radius:12px;animation:2.5s ease-out msg-highlight-flash}@keyframes 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var(--mg-brand);background:var(--panel);color:var(--mg-brand-dark);cursor:pointer;border-radius:999px;flex:none;padding:3px 10px;font-size:12px}.att-html-expand:hover{background:var(--mg-brand);color:#fff}.att-html-frame{background:#fff;border:none;width:100%;height:420px;max-height:420px;display:block}.html-viewer{z-index:100;background:var(--bg);padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);flex-direction:column;display:flex;position:fixed;inset:0}.html-viewer-head{background:var(--panel);border-bottom:1px solid var(--border);flex:none;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;display:flex}.html-viewer-name{color:var(--mg-ink);text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:14px;font-weight:700;overflow:hidden}.html-viewer-head .close{background:var(--mg-brand-bg);color:var(--mg-brand-dark);cursor:pointer;border:none;border-radius:50%;flex:none;width:36px;height:36px;font-size:16px}.html-viewer-frame{background:#fff;border:none;flex:1;width:100%}.bubble.deleted{box-shadow:none;color:var(--muted2);border:1px dashed var(--border);background:0 0;padding:6px 12px;font-size:13px;font-style:italic}.msg-time .edited{color:var(--muted2);margin-right:5px;font-size:10px}.bubble.pending{opacity:.65}.bubble.failed{opacity:.9;border:1px solid var(--danger)}.send-status{white-space:nowrap;align-items:center;gap:4px;display:inline-flex}.send-status.failed{color:var(--danger)}.pending-dot{background:var(--muted2);border-radius:50%;width:6px;height:6px;animation:1s ease-in-out infinite pending-pulse;display:inline-block}@keyframes pending-pulse{0%,to{opacity:.25}50%{opacity:1}}.resend-btn{color:var(--danger);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:10px;font-weight:700;text-decoration:underline}.resend-x{color:var(--muted2);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:10px}.msg-menu-wrap{display:inline-flex;position:relative}.msg-menu-btn{color:var(--muted2);cursor:pointer;background:0 0;border:none;border-radius:5px;margin-left:3px;padding:0 2px;font-size:15px;line-height:1}.msg-menu-btn:hover{color:var(--muted);background:var(--mg-brand-bg)}.menu-backdrop{z-index:40;position:fixed;inset:0}.msg-menu{z-index:41;background:var(--panel);border:1px solid var(--border);box-shadow:var(--mg-shadow-float);border-radius:10px;min-width:168px;margin-top:4px;position:absolute;top:100%;right:0;overflow:hidden}.msg-menu button{text-align:left;cursor:pointer;width:100%;color:var(--text);white-space:nowrap;background:0 0;border:none;padding:11px 14px;font-size:14px;display:block}.msg-menu button:hover{background:var(--mg-brand-bg)}.msg-menu button.danger{color:var(--danger);border-top:1px solid var(--border)}.read-badge-wrap{margin-right:5px;display:inline-flex;position:relative}.read-badge{color:var(--muted2);cursor:pointer;background:0 0;border:none;padding:0;font-size:10px;font-weight:600;line-height:1}.read-badge:hover{color:var(--muted)}.read-badge-pop{z-index:41;background:var(--panel);border:1px solid var(--border);box-shadow:var(--mg-shadow-float);border-radius:10px;min-width:120px;max-height:200px;margin-bottom:4px;position:absolute;bottom:100%;right:0;overflow:hidden auto}.read-badge-name{color:var(--text);white-space:nowrap;padding:8px 12px;font-size:13px}.read-badge-name+.read-badge-name{border-top:1px solid var(--border)}.edit-box{background:var(--panel);border:1px solid var(--mg-brand);max-width:78vw;box-shadow:var(--mg-shadow-card);border-radius:14px;padding:8px}.edit-box textarea{resize:none;background:0 0;border:none;outline:none;width:100%;min-width:220px;font-size:15px;line-height:1.5}.edit-actions{justify-content:flex-end;gap:8px;margin-top:6px;display:flex}.edit-actions .btn{padding:6px 14px;font-size:13px}.msg-actions{flex-wrap:wrap;align-items:center;gap:6px;margin-top:4px;display:flex}.msg-row.mine .msg-actions{justify-content:flex-end}.react-chip{border:1px solid var(--border);background:var(--panel);cursor:pointer;color:var(--muted);border-radius:999px;padding:2px 8px;font-size:12px}.react-chip.on{border-color:var(--accent);background:var(--accent-weak);color:var(--accent-dark)}.react-add{border:1px dashed var(--border);cursor:pointer;color:var(--muted2);background:0 0;border-radius:999px;padding:2px 8px;font-size:12px}.thread-link{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:2px 4px;font-size:12px;font-weight:600}.emoji-pop{z-index:30;background:var(--panel);border:1px solid var(--border);border-radius:12px;gap:2px;padding:6px;display:flex;position:absolute;box-shadow:0 4px 16px #0000001f}.emoji-pop button{cursor:pointer;background:0 0;border:none;border-radius:8px;padding:6px 8px;font-size:22px}.emoji-pop button:active{background:var(--accent-weak)}.thread-root{background:var(--panel);border-bottom:1px solid var(--border);padding:10px}.thread-count-sep{color:var(--muted);padding:8px 12px;font-size:12px}.composer{background:var(--panel);border-top:1px solid var(--border);padding:8px 10px;padding-bottom:calc(8px + env(safe-area-inset-bottom));flex:none;position:relative}.composer-row{align-items:flex-end;gap:6px;display:flex}.composer textarea{resize:none;border:1px solid var(--border);background:var(--bg);border-radius:18px;flex:1;min-width:0;max-height:120px;padding:9px 14px;font-size:16px;line-height:1.45}.composer textarea:focus{outline:2px solid 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34px;font-size:16px;font-weight:700;display:flex}.drop-overlay-inner .drop-ic{color:var(--mg-brand);font-size:26px;line-height:1}.file-previews{gap:8px;padding:4px 2px 8px;display:flex;overflow-x:auto}.file-preview{flex:none;position:relative}.file-preview img{object-fit:cover;border-radius:10px;width:64px;height:64px;display:block}.file-preview .doc{background:var(--accent-weak);width:64px;height:64px;color:var(--accent-dark);text-align:center;word-break:break-all;border-radius:10px;place-items:center;padding:4px;font-size:10px;display:grid;overflow:hidden}.file-preview .rm{background:var(--text);color:#fff;cursor:pointer;border:none;border-radius:50%;place-items:center;width:20px;height:20px;font-size:11px;display:grid;position:absolute;top:-6px;right:-6px}.mention-pop{background:var(--panel);border:1px solid var(--border);z-index:20;border-radius:12px;max-height:220px;margin-bottom:4px;position:absolute;bottom:100%;left:10px;right:10px;overflow:hidden auto;box-shadow:0 -2px 16px #0000001a}.mention-pop button{border:none;border-bottom:1px solid var(--border);cursor:pointer;text-align:left;background:0 0;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;display:flex}.mention-pop button:last-child{border-bottom:none}.mention-pop button:active{background:var(--accent-weak)}.send-warning{color:#9a3412;background:#fff7ed;border-radius:8px;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;padding:6px 10px;font-size:12px;display:flex}.send-warning button{color:inherit;cursor:pointer;background:0 0;border:none;font-size:14px}.line-thread-notice{color:#9a3412;border-bottom:1px solid var(--border);background:#fff7ed;padding:7px 12px;font-size:12px;line-height:1.5}.section-label{color:var(--muted);align-items:center;gap:6px;margin:14px 2px 8px;font-size:11px;font-weight:700;display:flex}.section-label:before,.section-label:after{content:"";background:var(--border);flex:1;height:1px}.line-window{background:var(--panel);border:1.5px solid var(--line-win-border);box-shadow:var(--mg-shadow-card);border-radius:14px;flex-direction:column;height:min(48vh,430px);min-height:240px;display:flex;position:relative;overflow:hidden}.line-drop-overlay{z-index:61;pointer-events:none;background:color-mix(in srgb, var(--line-green) 20%, transparent);place-items:center;display:grid;position:absolute;inset:0}.line-drop-overlay-inner{border:2.5px dashed var(--line-green);background:var(--panel);box-shadow:var(--mg-shadow-card);color:var(--line-green);border-radius:14px;align-items:center;gap:8px;padding:16px 24px;font-size:14px;font-weight:700;display:flex}.line-head{background:linear-gradient(180deg, #08d15e, var(--line-green));color:#fff;flex:none;align-items:center;gap:8px;padding:8px 10px;display:flex}.line-head-avatar{background:var(--line-win-border);width:28px;height:28px;color:var(--line-win-muted);border-radius:50%;flex:none;place-items:center;font-size:12px;font-weight:700;display:grid}.line-head-main{flex:1;min-width:0}.line-head-name{white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;font-weight:700;overflow:hidden}.line-head-badge{letter-spacing:.5px;background:#ffffff38;border-radius:5px;flex:none;padding:2px 6px;font-size:9.5px;font-weight:800}.line-scroll{background:var(--line-win-bg);flex:1;min-height:0;padding:10px 8px 6px;overflow-y:auto}.line-empty{text-align:center;color:var(--line-win-muted);padding:24px 10px;font-size:12.5px}.line-daysep{place-items:center;margin:2px 0 10px;display:grid}.line-daysep span{color:#fff;background:#0000001f;border-radius:999px;padding:2px 12px;font-size:10px}.line-group{align-items:flex-end;gap:6px;margin-bottom:9px;display:flex}.line-group.mine{flex-direction:row-reverse}.line-av{color:#6d7873;background:#c7cdc9;border-radius:50%;flex:0 0 30px;align-self:flex-end;place-items:center;width:30px;height:30px;font-size:11px;font-weight:700;display:grid}.line-bubbles{flex-direction:column;gap:3px;min-width:0;max-width:78%;display:flex}.line-group.mine .line-bubbles{align-items:flex-end}.line-entry-label{color:var(--line-win-muted);margin:4px 2px 2px;font-size:10px;font-weight:700}.line-group.mine .line-entry-label{text-align:right;color:var(--mg-brand-dark)}.line-bwrap{align-items:flex-end;gap:4px;display:flex}.line-group.mine .line-bwrap{flex-direction:row-reverse}.line-bubble{background:var(--panel);color:#222;white-space:pre-wrap;word-break:break-word;border-radius:16px 16px 16px 4px;max-width:100%;padding:7px 12px;font-size:13.5px;line-height:1.5;box-shadow:0 1px #0000000a}.line-group.mine .line-bubble{background:var(--line-mine);color:var(--line-mine-ink);border-radius:16px 16px 4px}.line-bubble.failed{background:var(--st-ng-bg);color:var(--st-ng-fg);border:1px solid var(--danger)}.line-bubble a{color:inherit;text-decoration:underline}.file-link-chip{background:color-mix(in srgb, currentColor 8%, transparent);border-radius:8px;align-items:center;gap:6px;margin-top:4px;padding:3px 6px;font-size:11.5px;display:flex}.file-link-chip .file-link-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.file-link-chip .file-link-badge{color:var(--danger);white-space:nowrap;flex:none;font-weight:700}.file-link-chip.revoked{opacity:.85}.line-meta{color:var(--line-win-muted);white-space:nowrap;flex-direction:column;flex:none;align-items:center;font-size:9.5px;line-height:1.35;display:flex}.line-group.mine .line-meta{align-items:flex-end}.line-sending-row{background:var(--accent-weak);color:var(--mg-ink);border-radius:8px;margin:4px 2px 0;padding:6px 10px;font-size:12px;font-weight:600}.line-composer{background:var(--panel);border-top:1px solid var(--line-win-border);flex:none;padding:6px 8px 7px}.line-composer .warn-line{color:var(--st-ng-fg);background:var(--st-ng-bg);border-radius:7px;align-items:center;gap:5px;margin-bottom:5px;padding:4px 8px;font-size:10.5px;font-weight:700;display:flex}.line-composer-row{align-items:flex-end;gap:6px;display:flex}.line-composer-row textarea{resize:none;border:1px solid var(--line-win-border);color:#222;background:#f7f8f7;border-radius:18px;flex:1;min-width:0;max-height:120px;padding:8px 13px;font-size:14px;line-height:1.45}.line-composer-row textarea:focus{border-color:var(--line-green);outline:none}.line-send{background:var(--line-green);color:#fff;cursor:pointer;border:none;border-radius:50%;flex:none;place-items:center;width:32px;height:32px;font-size:14px;display:grid}.line-send:disabled{background:var(--muted2)}.line-composer .micro{color:var(--line-win-muted);margin-top:4px;padding-left:2px;font-size:9.5px}.line-confirm-backdrop{z-index:120;background:#0a234259;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.line-confirm-box{background:var(--panel);width:100%;max-width:320px;box-shadow:var(--mg-shadow-float);text-align:center;border-radius:16px;padding:20px}.line-confirm-box p{color:var(--mg-ink);margin:0 0 6px;font-size:15px;font-weight:700}.line-confirm-preview{color:var(--muted);background:var(--chat-bg);white-space:pre-wrap;text-align:left;word-break:break-word;border-radius:10px;max-height:120px;margin:10px 0 16px;padding:8px 10px;font-size:13px;overflow-y:auto}.line-confirm-actions{gap:10px;display:flex}.line-confirm-actions button{cursor:pointer;border:none;border-radius:999px;flex:1;padding:10px;font-size:14px;font-weight:700}.line-confirm-cancel{background:var(--bg);color:var(--muted);border:1px solid var(--border)!important}.line-confirm-send{background:var(--line-green);color:#fff}@media (width<=480px){.line-window{height:min(52vh,380px)}}.files-tabs{background:var(--panel);border-bottom:1px solid var(--border);flex:none;display:flex}.files-tabs button{color:var(--muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;flex:1;padding:11px 0;font-size:14px;font-weight:600}.files-tabs button.on{color:var(--mg-brand-dark);border-bottom-color:var(--mg-brand)}.files-body{background:var(--bg);flex:1;overflow-y:auto}.files-grid{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:3px;padding:3px;display:grid}.files-thumb{aspect-ratio:1;cursor:pointer;background:var(--border);border:none;padding:0;position:relative;overflow:hidden}.files-thumb img{object-fit:cover;width:100%;height:100%;display:block}.files-thumb .thumb-ph{background:var(--border);width:100%;height:100%;color:var(--muted2);place-items:center;font-size:12px;display:grid}.files-thumb.checked img{opacity:.6}.thumb-check{border:1.5px solid var(--mg-brand);width:22px;height:22px;color:var(--mg-brand-dark);background:#ffffffd9;border-radius:50%;place-items:center;font-size:13px;font-weight:700;display:grid;position:absolute;top:6px;right:6px}.thumb-check.on{background:var(--mg-brand);color:#fff;border-color:var(--mg-brand)}.files-list{padding:8px 0}.file-item{border-bottom:1px solid var(--border);background:var(--panel);align-items:center;gap:10px;padding:10px 14px;display:flex}.file-item .fi-main{flex-direction:column;flex:1;min-width:0;display:flex}.file-item .fi-name{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.file-item .fi-sub{color:var(--muted);font-size:12px}.file-item .btn{padding:6px 14px;font-size:13px}.files-actionbar{padding:10px 14px;padding-bottom:calc(10px + env(safe-area-inset-bottom));background:var(--panel);border-top:1px solid 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var(--border);padding:8px 0;font-size:12px}.sub-row .err{color:var(--danger)}.sub-row .ok{color:var(--ok)}.name-input{border:1px solid var(--border);border-radius:8px;flex:1;min-width:120px;padding:9px 12px;font-size:16px}.sheet-overlay{z-index:90;background:#00000059;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.sheet{background:var(--panel);width:100%;max-width:640px;max-height:80svh;padding-bottom:env(safe-area-inset-bottom);border-radius:16px 16px 0 0;flex-direction:column;animation:.18s ease-out sheet-in;display:flex}@keyframes sheet-in{0%{opacity:.6;transform:translateY(30px)}}.sheet-head{justify-content:space-between;align-items:center;padding:12px 14px 6px;font-size:16px;display:flex}.sheet-body{padding:0 14px 16px;overflow-y:auto}.toast{left:50%;bottom:calc(80px + env(safe-area-inset-bottom));background:var(--text);color:#fff;z-index:200;border-radius:999px;max-width:90vw;padding:8px 18px;font-size:13px;animation:.2s ease-out 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var(--border);border-radius:8px;margin-left:auto;font-size:12px;display:flex;overflow:hidden}.tb-toggle button{cursor:pointer;color:var(--muted);background:0 0;border:none;padding:6px 14px}.tb-toggle button.on{background:var(--mg-brand);color:#fff;font-weight:700}.tb-new{flex:none;margin-left:8px;padding:8px 14px;font-size:13px}.tb-scroll{background:var(--chat-bg);flex:1;min-height:0;overflow:auto}.tb-empty,.tb-colempty{color:var(--muted);text-align:center;font-size:13px;line-height:1.8}.tb-empty{padding:48px 24px}.tb-colempty{padding:14px 6px}.tb-nm{color:var(--mg-ink);align-items:baseline;gap:4px;font-size:14.5px;font-weight:700;line-height:1.4;display:flex}.tb-pen{color:var(--muted2);cursor:pointer;background:0 0;border:none;flex:none;padding:0 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var(--panel);border-radius:50%;place-items:center;width:22px;height:22px;font-size:10px;font-weight:700;display:grid}.tb-mini.tb-more{background:var(--muted2)}.tb-picker{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.tb-board{align-items:flex-start;gap:14px;min-height:100%;padding:16px;display:flex}.tb-col{background:#eef4f6;border-radius:12px;flex-direction:column;flex:1 1 0;gap:10px;min-width:280px;padding:10px;display:flex}.tb-col.over{outline:2px dashed var(--mg-brand);outline-offset:-2px;background:var(--mg-brand-bg)}.tb-colhead{align-items:center;gap:8px;padding:2px 4px;font-size:13px;font-weight:700;display:flex}.tb-dot{border-radius:50%;flex:none;width:9px;height:9px}.tb-colcnt{background:var(--panel);color:var(--muted);border-radius:999px;margin-left:auto;padding:1px 8px;font-size:11px;font-weight:600}.tb-card{background:var(--panel);border:1px solid var(--border);cursor:pointer;box-shadow:var(--mg-shadow-card);border-radius:10px;padding:11px 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(width<=899px){.app-frame{border-left:1px solid var(--border);border-right:1px solid var(--border);width:100%;max-width:640px;margin:0 auto}}@media (width>=900px){.shell-sidebar{border-right:1px solid var(--border);flex:0 0 260px;width:260px}.shell-main{flex:1;min-width:0}.shell-main .app-frame{border-left:none;border-right:none;width:100%;max-width:none;margin:0}.shell-main .msg-scroll>*,.shell-main .composer-row,.shell-main .file-previews,.shell-main .composer-notice{max-width:980px}.mobile-only{display:none!important}.shell-sidebar .brandmark .mod{display:none}}