@media(max-width:560px){.classroom .head .code-box{flex:1 1 100%}.classroom .task .top{flex-wrap:wrap}.classroom .task .live{justify-content:flex-start}}.classroom .pv-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.classroom .pv-head b{display:block;font-size:17px}.classroom .pv-head code{font-family:var(--mono);font-weight:700;font-size:20px;letter-spacing:.12em;color:var(--flash)}.classroom .pv-rows{list-style:none;margin:0;padding:0;font-size:15px}.classroom .pv-rows li{display:flex;justify-content:space-between;padding:8px 0;border-top:1px solid var(--line)}.classroom .pv-rows b{font-family:var(--mono)}.classroom .pv-rows i{font-style:normal;color:var(--muted);font-size:14px}.classroom .msg{color:var(--bad)}.classroom input:not([type]),.classroom select{flex:1}.classroom{padding-top:8px}.classroom section{display:flex;flex-direction:column;gap:16px}.classroom h1{margin:0;overflow-wrap:anywhere}.classroom 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.head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px}.classroom .code-box{background:var(--panel);border:1px solid var(--flash);border-radius:8px;padding:14px 16px;display:flex;flex-direction:column;gap:8px}.classroom .code-box .code{margin:0;font-family:var(--mono);font-weight:700;font-size:34px;letter-spacing:.12em;color:var(--flash)}.classroom .btns{display:flex;gap:8px;flex-wrap:wrap}.classroom .grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:16px;align-items:start}.classroom .col{display:flex;flex-direction:column;gap:16px;min-width:0}.classroom .selects{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.classroom .card-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}.classroom .tasks{display:flex;flex-direction:column;gap:12px}.classroom .task .top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.classroom .task h2{margin:0;font-size:17px}.classroom .task .sub{margin:2px 0 0;color:var(--muted);font-size:13px}.classroom .o-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.classroom .o-table tr.top td:nth-child(2){color:var(--flash);font-weight:800}.classroom .o-table .meter{display:inline-block;width:60px;height:6px;border-radius:3px;background:var(--panel-2);margin-right:8px;vertical-align:middle;overflow:hidden}.classroom .o-table .meter i{display:block;height:100%;background:var(--good)}.classroom .task .live{flex:none;display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.classroom .task .closed-tag{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--bad);border:1px solid var(--bad);border-radius:4px;padding:2px 6px;white-space:nowrap}.classroom .task .sum{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.classroom .stat{background:var(--panel-2);border-radius:6px;padding:8px 10px}.classroom .stat .k{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.classroom .stat .v{font-family:var(--mono);font-weight:700;font-size:18px}.classroom table{width:100%;border-collapse:collapse;font-size:14px}.classroom th{text-align:left;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:6px 4px}.classroom td{padding:7px 4px;border-top:1px solid var(--line)}.classroom td.n,.classroom th.n{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}.classroom .waiting{color:var(--muted);font-size:13px;margin:0}.classroom .missed{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:12px 10px}.classroom .missed a{display:flex;flex-direction:column;gap:4px;color:var(--paper);text-decoration:none;font-weight:700;font-size:13px;line-height:1.25}.classroom .missed img{width:100%;aspect-ratio:4 / 3;object-fit:cover;border-radius:4px;box-shadow:0 0 0 1px var(--line)}.classroom .missed small{color:var(--muted);font-weight:400;font-size:12px}.classroom details summary{cursor:pointer;font-weight:700;font-size:14px}.classroom details>*+*{margin-top:12px}.classroom .task .actions{display:flex;gap:14px;flex-wrap:wrap}.classroom .students{list-style:none;margin:0;padding:0}.classroom .students li{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:7px 0;border-top:1px solid var(--line)}.classroom .students li:first-child{border-top:0}.classroom .students span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}.classroom .students small{color:var(--muted);font-weight:400}.classroom .students .acts{display:flex;gap:10px;flex:none}.classroom .del,.classroom .link.del{color:var(--bad);border-color:var(--bad);align-self:flex-start}.classroom .board-view{position:fixed;inset:0;z-index:10;background:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;text-align:center}.classroom .board-view p{margin:0}.classroom .board-view .url{font-family:var(--display);font-weight:900;font-size:clamp(28px,6vw,64px);margin-bottom:28px;overflow-wrap:anywhere}.classroom .board-view .big{font-family:var(--mono);font-weight:700;font-size:clamp(56px,16vw,180px);letter-spacing:.14em;color:var(--flash);line-height:1}.classroom .board-view .joined{color:var(--muted);font-size:20px;margin:20px 0}@media(max-width:760px){.classroom .grid,.classroom .selects{grid-template-columns:minmax(0,1fr)}.classroom .o-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.classroom .o-table th:nth-child(3),.classroom .o-table td:nth-child(3){display:none}}