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var(--line-soft);background:var(--panel-2);transition:border-color var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out),box-shadow var(--dur-1) var(--ease-out)}@media (hover: hover){.exp-opt:not(.off):hover{border-color:var(--accent-line);background:var(--panel);box-shadow:var(--shadow)}}.exp-opt.off{cursor:not-allowed;opacity:.72;background:var(--panel);border-style:dashed}.exp-opt.on{border-color:var(--accent-line);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent-line)}.exp-opt.on .exp-opt-i{background:var(--accent);color:#fff;border-color:var(--accent)}.exp-opt input{flex:none;margin-top:3px;accent-color:var(--accent);width:15px;height:15px}.exp-opt-i{flex:none;display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--panel);color:var(--accent);border:1px solid var(--line-soft);transition:background var(--dur-1) var(--ease-out),color var(--dur-1) var(--ease-out),border-color var(--dur-1) 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var(--line);color:var(--ink-2)}.ck-pill.live{color:var(--accent);border-color:var(--accent);background:var(--accent-soft, transparent)}.ck-detail{display:grid;gap:14px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:var(--shadow)}.ck-detail-head h2{margin:0 0 4px;font-size:18px}.ck-stage{display:flex;flex-wrap:wrap;gap:20px 28px;align-items:center;justify-content:center;padding:16px;border:1px dashed var(--line);border-radius:var(--radius);background:var(--panel-2)}.ck-stage-qr{display:grid;justify-items:center;gap:8px}.ck-qr{width:220px;height:220px;background:#fff;border-radius:8px;border:1px solid var(--line)}.ck-code-block{display:grid;justify-items:center;gap:8px;min-width:160px}.ck-code-label{font-size:12.5px;letter-spacing:.12em;color:var(--muted);font-weight:700}.ck-code{font-family:var(--serif);font-size:42px;letter-spacing:.28em;font-weight:700;color:var(--ink);line-height:1.1;padding-left:.28em}.ck-link-row{margin:0;font-size:13.5px;word-break:break-all;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.ck-actions{display:flex;flex-wrap:wrap;gap:8px}.ck-tabs{display:flex;gap:6px;border-bottom:1px solid var(--line-soft);padding-bottom:0}.ck-tabs button{font:inherit;font-size:13.5px;padding:8px 12px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--ink-2);cursor:pointer;margin-bottom:-1px}.ck-tabs button.on{color:var(--accent);border-bottom-color:var(--accent);font-weight:700}.ck-table{width:100%;border-collapse:collapse;font-size:13.5px}.ck-table th,.ck-table td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line-soft);vertical-align:middle}.ck-table th{color:var(--muted);font-weight:600;font-size:12px}.ck-table select{font:inherit;font-size:13px;padding:4px 6px;border:1px solid var(--line);border-radius:6px;background:var(--panel)}.ck-mark-btns{display:flex;flex-wrap:wrap;gap:6px}.ck-student{display:grid;gap:12px}.ck-code-input{letter-spacing:.2em;font-size:18px!important;font-weight:700}.ck-ext-block{display:grid;gap:6px}.ck-ok{color:var(--accent);font-weight:600}.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink-2);height:34px;padding:0 12px;border-radius:var(--radius);font:inherit;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center}.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}.more-wrap{position:relative}.more-pop{position:absolute;left:8px;right:8px;bottom:calc(100% + 6px);z-index:40;display:grid;gap:2px;padding:6px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);animation:lm-rise-in var(--dur-2, .18s) var(--ease-out) both}.more-item,.more-meta{display:flex;align-items:flex-start;gap:10px;width:100%;padding:9px 10px;text-align:left;font:inherit;color:var(--ink);background:transparent;border:0;border-radius:8px;cursor:pointer;text-decoration:none}.more-item:hover{background:var(--panel-2)}.more-item.off,.more-meta{cursor:default;opacity:.72}.more-item.off:hover{background:transparent}.more-item-b{display:grid;gap:2px;min-width:0}.more-item-t{font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}.more-item-d{font-size:11.5px;color:var(--muted);line-height:1.4}.more-sep{height:1px;margin:4px 6px;background:var(--line-soft)}.help-page{max-width:720px;margin:0 auto;padding:28px 22px 64px;display:grid;gap:18px}.help-head h1{margin:0 0 6px;font-size:22px}.help-head p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.65}.help-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}.help-card{display:grid;gap:8px;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.help-card h2{margin:0;font-size:16px}.help-card p{margin:0;font-size:13.5px;color:var(--ink-2);line-height:1.7}.help-foot{margin:0;font-size:13px;color:var(--muted)}@media (max-width: 640px){.ck-code{font-size:36px}.ck-qr{width:180px;height:180px}}