:root{--ink: #142E4A;--ink-soft: #4C6E89;--muted: #93AEC3;--line: #E1EDF7;--bg: #F4F8FB;--surface: #FFFFFF;--brand: #3A9DE8;--brand-dark: #2678BE;--brand-tint: #EAF4FB;--coral: #E8633A;--coral-tint: #FCEBE5;--green: #1F9E7C;--green-tint: #E5F5F0;--navy: #0F2540;--navy2: #16324F;--navy3: #1D3E63}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Pretendard,Outfit,sans-serif;background:var(--bg);color:var(--ink)}button,input,textarea{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#cfe2f0;border-radius:8px}.app{display:flex;min-height:100vh}.sidebar{width:236px;flex-shrink:0;background:linear-gradient(180deg,var(--navy) 0%,var(--navy2) 100%);color:#fff;display:flex;flex-direction:column;padding:22px 14px;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:10px;padding:6px 10px 22px}.brandMark{width:34px;height:34px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;font-family:Outfit;font-weight:800;font-size:15px;flex-shrink:0}.brandTxt{font-family:Outfit;font-weight:700;font-size:15px;letter-spacing:-.2px}.brandSub{font-size:10px;color:#89a9c6;margin-top:1px;letter-spacing:.2px}.navGroup{margin-top:6px}.navLbl{font-size:10px;font-weight:600;color:#5c82a6;text-transform:uppercase;letter-spacing:.6px;padding:14px 12px 6px}.navBtn{width:100%;display:flex;align-items:center;gap:11px;padding:10px 12px;border:none;background:transparent;color:#b9d0e4;border-radius:10px;cursor:pointer;font-size:13.5px;font-weight:500;text-align:left;margin-bottom:2px;transition:background .15s}.navBtn:hover{background:#ffffff0f}.navBtn.on{background:var(--brand);color:#fff;font-weight:600}.navBtn .ico{width:17px;height:17px;flex-shrink:0}.navBadge{margin-left:auto;background:var(--coral);color:#fff;font-size:10px;font-weight:700;padding:1px 6px;border-radius:20px}.sideFoot{margin-top:auto;padding:12px;border-top:1px solid rgba(255,255,255,.09);display:flex;align-items:center;gap:10px}.meAvi{width:32px;height:32px;border-radius:50%;background:#ede8f8;color:#8856d4;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12.5px;flex-shrink:0}.meName{font-size:12.5px;font-weight:600;color:#fff}.meRole{font-size:10.5px;color:#7a9cba}.main{flex:1;min-width:0}.topbar{background:var(--surface);border-bottom:1px solid var(--line);padding:18px 32px;display:flex;align-items:center;justify-content:space-between}.pageTitle{font-size:19px;font-weight:700;letter-spacing:-.3px}.pageSub{font-size:12px;color:var(--ink-soft);margin-top:2px}.content{padding:26px 32px 60px}.card{background:var(--surface);border:1px solid var(--line);border-radius:16px}.btn{display:inline-flex;align-items:center;gap:7px;border:none;border-radius:10px;padding:10px 18px;font-size:13px;font-weight:600;cursor:pointer}.btnPri{background:var(--brand);color:#fff}.btnPri:hover{background:var(--brand-dark)}.btnGhost{background:var(--brand-tint);color:var(--brand-dark)}.btnGhost:hover{background:#dceefa}.btnLine{background:#fff;border:1px solid var(--line);color:var(--ink-soft)}.pill{font-size:10.5px;font-weight:700;padding:3px 9px;border-radius:20px}.statGrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:26px}.statCard{padding:20px 20px 18px}.statTop{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.statIcon{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px}.statNum{font-family:Outfit;font-size:26px;font-weight:700;letter-spacing:-.5px}.statLbl{font-size:12px;color:var(--ink-soft);margin-top:3px}.dashRow{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}.sectionHead{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 4px}.sectionTitle{font-size:14.5px;font-weight:700}.link{font-size:12px;color:var(--brand-dark);font-weight:600;cursor:pointer;background:none;border:none}.miniNotice{display:flex;gap:12px;align-items:flex-start;padding:12px 20px;border-top:1px solid var(--line);cursor:pointer}.miniNotice:hover{background:var(--bg)}.miniDept{font-size:10.5px;font-weight:700;color:var(--brand-dark)}.miniTitle{font-size:13px;font-weight:500;margin-top:2px;line-height:1.4}.readBarWrap{margin-top:8px;display:flex;align-items:center;gap:8px}.readBar{flex:1;height:5px;border-radius:6px;background:var(--line);overflow:hidden}.readBarFill{height:100%;background:var(--green)}.readTxt{font-size:10.5px;color:var(--ink-soft);white-space:nowrap;font-family:Outfit;font-weight:600}.miniStu{display:flex;align-items:center;gap:11px;padding:11px 20px;border-top:1px solid var(--line);cursor:pointer}.miniStu:hover{background:var(--bg)}.stuAvi{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:#fff;flex-shrink:0;position:relative}.stuName{font-size:13px;font-weight:600}.stuMeta{font-size:11px;color:var(--muted);margin-top:1px}.unreadDot{width:8px;height:8px;border-radius:50%;background:var(--coral);margin-left:auto;flex-shrink:0}.composeGrid{display:grid;grid-template-columns:1fr 336px;gap:22px;align-items:start}.formCard{padding:22px 24px 26px}.fLabel{font-size:12.5px;font-weight:700;color:var(--ink);margin:18px 0 8px}.fLabel:first-child{margin-top:0}.fHint{font-size:11px;color:var(--muted);font-weight:400;margin-left:6px}.deptRow{display:flex;gap:8px;flex-wrap:wrap}.deptChip{padding:8px 14px;border-radius:20px;border:1px solid var(--line);background:#fff;font-size:12.5px;font-weight:600;color:var(--ink-soft);cursor:pointer}.deptChip.on{background:var(--navy3);color:#fff;border-color:var(--navy3)}.inp{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 14px;font-size:13.5px;color:var(--ink);background:#fff}.inp:focus{outline:none;border-color:var(--brand)}textarea.inp{resize:vertical;min-height:150px;line-height:1.6}.urgentRow{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--coral-tint);border-radius:11px}.toggle{width:36px;height:21px;border-radius:20px;background:var(--line);position:relative;cursor:pointer;flex-shrink:0;transition:background .15s}.toggle.on{background:var(--coral)}.toggle .kn{width:17px;height:17px;border-radius:50%;background:#fff;position:absolute;top:2px;left:2px;transition:left .15s;box-shadow:0 1px 2px #0003}.toggle.on .kn{left:17px}.audTabs{display:flex;gap:6px;background:var(--bg);border-radius:10px;padding:4px;margin-bottom:14px}.audTab{flex:1;text-align:center;padding:8px 0;border-radius:8px;font-size:12.5px;font-weight:600;color:var(--ink-soft);cursor:pointer;border:none;background:transparent}.audTab.on{background:#fff;color:var(--brand-dark);box-shadow:0 1px 3px #142e4a14}.audPane{display:none}.audPane.on{display:block}.deptTargetGrid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.deptTargetCard{border:1px solid var(--line);border-radius:11px;padding:12px 13px;cursor:pointer;display:flex;align-items:center;gap:10px}.deptTargetCard.on{border-color:var(--brand);background:var(--brand-tint)}.deptTargetCard .n{font-size:12.5px;font-weight:600}.deptTargetCard .c{font-size:10.5px;color:var(--muted)}.checkbox{width:17px;height:17px;border-radius:5px;border:1.5px solid var(--line);flex-shrink:0;display:flex;align-items:center;justify-content:center}.deptTargetCard.on .checkbox{background:var(--brand);border-color:var(--brand)}.stuPicker{border:1px solid var(--line);border-radius:11px;overflow:hidden}.stuPickerSearch{padding:10px 12px;border-bottom:1px solid var(--line)}.stuPickerSearch input{width:100%;border:none;font-size:12.5px;outline:none}.stuPickerList{max-height:230px;overflow-y:auto}.stuPickRow{display:flex;align-items:center;gap:10px;padding:9px 13px;cursor:pointer;border-bottom:1px solid #F1F6FA}.stuPickRow:last-child{border-bottom:none}.stuPickRow:hover{background:var(--bg)}.stuPickRow .checkbox{width:16px;height:16px}.stuPickRow.on .checkbox{background:var(--brand);border-color:var(--brand)}.stuPickAvi{width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10.5px;font-weight:700;color:#fff;flex-shrink:0}.stuPickName{font-size:12.5px;font-weight:500;flex:1}.stuPickMeta{font-size:10.5px;color:var(--muted)}.chipsTray{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;min-height:20px}.selChip{display:flex;align-items:center;gap:5px;background:var(--brand-tint);color:var(--brand-dark);font-size:11.5px;font-weight:600;padding:4px 9px 4px 5px;border-radius:20px}.selChip .miniAvi{width:16px;height:16px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:8px;font-weight:700}.attachBox{border:1.5px dashed var(--line);border-radius:11px;padding:16px;text-align:center;color:var(--muted);font-size:12px;cursor:pointer}.attachBox:hover{border-color:var(--brand);color:var(--brand-dark)}.formFoot{display:flex;justify-content:flex-end;gap:10px;margin-top:24px;border-top:1px solid var(--line);padding-top:18px}.previewWrap{position:sticky;top:24px}.previewLbl{font-size:11.5px;font-weight:700;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.4px;margin-bottom:10px;padding-left:2px}.phone{width:300px;height:560px;background:#0d1117;border-radius:38px;padding:10px;box-shadow:0 10px 30px #0f25402e;margin:0 auto}.screen{width:100%;height:100%;border-radius:29px;overflow:hidden;display:flex;flex-direction:column;background:#f0f6fc}.sbar{display:flex;justify-content:space-between;padding:9px 17px 3px;font-size:10px;font-weight:600;color:#1a3a5c;background:#fff;flex-shrink:0}.appH2{background:#fff;padding:8px 15px 10px;border-bottom:.5px solid #D6E8F7;flex-shrink:0}.appH2 .t{font-size:15px;font-weight:700;color:#1a3a5c}.pbody{flex:1;overflow-y:auto;padding:12px}.ni2{background:#fff;border-radius:12px;border:.5px solid #D6E8F7;padding:12px 13px;display:flex;gap:10px;margin-bottom:8px}.nbar2{width:3px;border-radius:3px;background:#3a9de8;flex-shrink:0}.ndrow2{display:flex;justify-content:space-between;margin-bottom:3px}.ndept2{font-size:10px;font-weight:700;color:#3a9de8}.nago2{font-size:10px;color:#b8cfdf}.ntitle2{font-size:12px;font-weight:500;color:#1a3a5c;line-height:1.4}.previewDetailCard{background:#fff;border-radius:12px;border:.5px solid #D6E8F7;margin-top:10px;padding:13px}.pdHead{display:flex;align-items:center;gap:8px;margin-bottom:9px}.pdAvi{width:26px;height:26px;border-radius:50%;background:#eaf4fb;color:#3a9de8;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}.pdName{font-size:11px;font-weight:600;color:#1a3a5c}.pdDept{font-size:9.5px;color:#a8c4db}.pdTitle{font-size:13px;font-weight:700;color:#1a3a5c;line-height:1.4;margin-bottom:6px}.pdBody{font-size:11px;color:#4c6e89;line-height:1.6;white-space:pre-wrap}.emptyPreview{font-size:12px;color:#a8c4db;text-align:center;padding:60px 20px;line-height:1.6}.sentToolbar{display:flex;gap:10px;margin-bottom:16px}.searchBox{flex:1;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 13px}.searchBox input{border:none;outline:none;font-size:13px;flex:1}.filterSel{border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:12.5px;background:#fff;color:var(--ink-soft)}.sentRow{display:flex;align-items:center;gap:16px;padding:15px 20px;border-top:1px solid var(--line)}.sentRow:hover{background:var(--bg)}.sentIcon{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.sentMain{flex:1;min-width:0}.sentTitle{font-size:13.5px;font-weight:600}.sentMeta{font-size:11.5px;color:var(--muted);margin-top:3px;display:flex;gap:8px;align-items:center}.sentStat{width:180px;flex-shrink:0}.sentActions{display:flex;gap:6px}.iconBtn{width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}.iconBtn:hover{background:var(--brand-tint);border-color:var(--brand)}.msgLayout{display:grid;grid-template-columns:328px 1fr;gap:0;height:calc(100vh - 168px);border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}.stuListPane{border-right:1px solid var(--line);display:flex;flex-direction:column}.stuListSearch{padding:14px;border-bottom:1px solid var(--line)}.stuListItems{flex:1;overflow-y:auto}.stuListRow{display:flex;align-items:center;gap:11px;padding:12px 15px;cursor:pointer;border-bottom:1px solid #F1F6FA}.stuListRow:hover{background:var(--bg)}.stuListRow.active{background:var(--brand-tint)}.stuListRow .stuAvi{width:38px;height:38px;font-size:13px}.stuListInfo{flex:1;min-width:0}.stuListName{font-size:13px;font-weight:600;display:flex;align-items:center;gap:5px}.stuListMsg{font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.stuListTime{font-size:10px;color:var(--muted);flex-shrink:0}.chatPane{display:flex;flex-direction:column}.chatHead{display:flex;align-items:center;gap:12px;padding:15px 20px;border-bottom:1px solid var(--line)}.chatHeadName{font-size:14.5px;font-weight:700}.chatHeadMeta{font-size:11.5px;color:var(--muted);margin-top:1px}.chatBody{flex:1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:12px}.mrow2{display:flex;gap:9px;max-width:70%}.mrow2.me{align-self:flex-end;flex-direction:row-reverse}.bubble2{background:var(--bg);border-radius:14px 14px 14px 4px;padding:10px 13px;font-size:13px;line-height:1.55;white-space:pre-wrap}.mrow2.me .bubble2{background:var(--brand);color:#fff;border-radius:14px 14px 4px}.btime2{font-size:10px;color:var(--muted);margin-top:4px}.mrow2.me .btime2{text-align:right}.chatInputBar{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--line);align-items:flex-end}.chatInputBar textarea{flex:1;border:1px solid var(--line);border-radius:12px;padding:10px 13px;font-size:13px;resize:none;height:42px;font-family:inherit}.chatInputBar textarea:focus{outline:none;border-color:var(--brand)}.sendCircle{width:42px;height:42px;border-radius:50%;background:var(--brand);border:none;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.emptyChat{flex:1;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;flex-direction:column;gap:8px}.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%) translateY(20px);background:var(--ink);color:#fff;padding:13px 22px;border-radius:12px;font-size:13px;font-weight:500;display:flex;align-items:center;gap:9px;opacity:0;pointer-events:none;transition:all .25s;z-index:999;box-shadow:0 8px 24px #0003}.toast.show{opacity:1;transform:translate(-50%) translateY(0);pointer-events:auto}.authWrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 20% 20%,#1D3E63 0%,var(--navy) 55%,#081422 100%);padding:24px}.authCard{width:100%;max-width:400px;background:#fff;border-radius:22px;padding:36px 34px 30px;box-shadow:0 24px 60px #030f1e59}.authBrand{display:flex;align-items:center;gap:11px;margin-bottom:26px}.authMark{width:42px;height:42px;border-radius:12px;background:var(--brand);display:flex;align-items:center;justify-content:center;font-family:Outfit;font-weight:800;font-size:18px;color:#fff;flex-shrink:0}.authBrandTxt{font-family:Outfit;font-weight:700;font-size:17px;letter-spacing:-.2px}.authBrandSub{font-size:11px;color:var(--ink-soft);margin-top:1px}.authTabs{display:flex;gap:6px;background:var(--bg);border-radius:11px;padding:4px;margin-bottom:24px}.authTab{flex:1;text-align:center;padding:9px 0;border-radius:8px;font-size:13px;font-weight:600;color:var(--ink-soft);cursor:pointer;border:none;background:transparent}.authTab.on{background:#fff;color:var(--brand-dark);box-shadow:0 1px 3px #142e4a1a}.authPane{display:none}.authPane.on{display:block}.authTitle{font-size:16.5px;font-weight:700;margin-bottom:4px}.authDesc{font-size:12px;color:var(--ink-soft);margin-bottom:20px;line-height:1.5}.fGroup{margin-bottom:14px}.fGroupLbl{font-size:12px;font-weight:600;color:var(--ink);margin-bottom:6px;display:flex;align-items:center;gap:6px}.fGroupLbl .req{color:var(--coral)}.authInp{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 14px;font-size:13.5px;background:#fff}.authInp:focus{outline:none;border-color:var(--brand)}.keyInp{font-family:Outfit;letter-spacing:.5px;font-weight:600}.fGroupHint{font-size:11px;color:var(--muted);margin-top:5px;line-height:1.5}.authErr{font-size:11.5px;color:var(--coral);margin-top:6px;display:none}.authErr.show{display:block}.authBtn{width:100%;border:none;border-radius:11px;padding:13px 0;font-size:13.5px;font-weight:700;background:var(--brand);color:#fff;cursor:pointer;margin-top:6px}.authBtn:hover{background:var(--brand-dark)}.demoNote{margin-top:22px;padding:12px 13px;background:var(--brand-tint);border-radius:11px;font-size:11px;color:var(--brand-dark);line-height:1.55}.pwRow{position:relative}.pwToggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);cursor:pointer;color:var(--muted);font-size:11px;font-weight:600;background:none;border:none}.userMenu{position:relative}.userMenuPop{position:absolute;bottom:56px;left:0;width:100%;background:#fff;border-radius:12px;box-shadow:0 10px 30px #0f254040;padding:6px;display:none}.userMenuPop.show{display:block}.userMenuItem{padding:9px 11px;font-size:12.5px;font-weight:500;color:var(--ink);border-radius:8px;cursor:pointer}.userMenuItem:hover{background:var(--bg)}.userMenuItem.danger{color:var(--coral)}.appBootLoading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--muted, #8a8f98);font-size:13px}