.nav-red-dot,.contact-red-dot{display:inline-grid;place-items:center;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:#e62424;color:#fff;font-size:10px;font-weight:800;font-style:normal;line-height:1}
nav button{position:relative}
.nav-red-dot{position:absolute;top:6px;right:8px;box-shadow:0 0 0 2px #fff}
.contact{position:relative}
.contact-red-dot{position:absolute;right:10px;top:10px;min-width:20px;height:20px;border-radius:10px;box-shadow:0 0 0 2px #f5f7f9}
.contact time{margin-right:26px}
.contact .contact-red-dot + time,.contact time + .contact-red-dot{margin-right:0}
.assignment-attachment{display:flex;align-items:center;gap:10px;margin-top:9px}
.assignment-attachment img{width:72px;height:52px;object-fit:cover;border-radius:8px;border:1px solid #dfe7f0}
.stat-button{cursor:pointer;text-align:left;font:inherit;color:inherit}
.stat-button:hover{transform:translateY(-2px);border-color:#a9c8f7;box-shadow:0 14px 30px rgba(34,90,170,.14)}
.map-node.root{cursor:pointer}
.map-node.root.selected{outline:3px solid #ffcf42;outline-offset:3px}
.grade-canvas-wrap{min-width:0}
#gradeCanvas{display:block;max-width:100%;height:auto;background:#fff;border:1px solid #dfe7f0;border-radius:10px;cursor:crosshair;touch-action:none}
.grade-toolbar{display:flex;gap:8px;margin-bottom:9px;flex-wrap:wrap}
.grade-toolbar button.active{background:#e62424;color:#fff}
.grade-tip{margin-top:7px;color:#728198;font-size:12px}
.grade-setting-grid{display:grid;grid-template-columns:repeat(5,minmax(140px,1fr));gap:12px}
.grade-settings-panel .grade-setting-grid:first-of-type{grid-template-columns:repeat(3,minmax(160px,1fr))}
.exam-input{width:90px;padding:8px;border:1px solid #dfe7f0;border-radius:8px}
.table-wrap td small{display:block;margin-top:3px}
@media(max-width:900px){.grade-setting-grid,.grade-settings-panel .grade-setting-grid{grid-template-columns:1fr 1fr}.exam-input{width:100%}}
.attendance-signin{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.82fr);gap:14px;align-items:start;padding:14px;border:1px solid #dfe7f0;border-radius:12px;background:#fff}
.attendance-signin + .attendance-signin{margin-top:12px}
.signin-main{display:flex;flex-direction:column;gap:12px;min-width:0}
.attendance-leave-box{padding:12px;border:1px dashed #b9d3f8;border-radius:10px;background:#f7fbff}
.attendance-leave-box.linked{border-style:solid;background:#f9fbfe}
.attendance-leave-box .leave-box-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}
.attendance-leave-box p{margin:0;color:#536271;font-size:13px;line-height:1.6}
.attendance-leave-box .field{margin-bottom:8px}
.attendance-leave-panel{margin-top:18px}
.attendance-leave-item{display:flex;justify-content:space-between;gap:14px;padding:13px;border:1px solid #e3ebf3;border-radius:10px;background:#fff}
.attendance-leave-item + .attendance-leave-item{margin-top:10px}
.attendance-leave-item span,.attendance-leave-item p{display:block;margin-top:4px;color:#66778a;font-size:13px;line-height:1.6}
.attendance-leave-item .leave-actions{display:flex;flex-direction:column;align-items:flex-end;gap:8px;white-space:nowrap}
@media(max-width:820px){.attendance-signin{grid-template-columns:1fr}.attendance-leave-item{flex-direction:column}.attendance-leave-item .leave-actions{flex-direction:row;align-items:center;justify-content:flex-start}}