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#e0e0e0;margin-bottom:20px;gap:0}._tabItem_1t266_161{background:none;border:none;padding:10px 20px;font-size:14px;font-weight:500;color:#888;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color .15s,border-color .15s;white-space:nowrap}._tabItem_1t266_161:hover{color:#2c5fcb}._tabItemActive_1t266_179{color:#2c5fcb;border-bottom-color:#2c5fcb;font-weight:600}._cardMeta_1t266_185{display:flex;flex-direction:column;gap:2px}._cardDate_1t266_191{font-size:11px;color:#bbb}._shareRecipientList_1t266_196{display:flex;flex-direction:column;gap:10px}._shareRecipientItem_1t266_202{display:flex;align-items:center;gap:8px;font-size:14px;color:#333;cursor:pointer}._shareRecipientItem_1t266_202 input[type=checkbox]{width:16px;height:16px;cursor:pointer;accent-color:#2c5fcb}._cardReadOnly_1t266_219{background:#f4f4f6;cursor:default}._cardReadOnly_1t266_219:hover{box-shadow:none}._readOnlyBadge_1t266_228{position:absolute;top:10px;right:12px;background:#e8e8ee;color:#999;border-radius:20px;padding:2px 9px;font-size:11px;font-weight:500;border:1px solid #ddd;pointer-events:none}._shareTree_1t266_243{display:flex;align-items:center;margin-bottom:10px}._shareTreeBranch_1t266_249{display:flex;flex-direction:column;gap:4px;padding-left:26px;border-left:1.5px solid #ccc;margin-left:8px}._shareTreeRow_1t266_258{display:flex;align-items:center;position:relative}._shareTreeRow_1t266_258:before{content:"";position:absolute;left:-26px;top:50%;width:18px;height:1.5px;background:#ccc}._shareTreeRow_1t266_258:after{content:"";position:absolute;left:-9px;top:50%;transform:translateY(-50%);width:0;height:0;border-top:4px solid transparent;border-bottom:4px solid transparent;border-left:5px solid #bbb}@media (max-width: 600px){._container_1t266_1{padding:20px 16px}._header_1t266_7{flex-wrap:wrap;gap:12px;margin-bottom:20px}._headerRight_1t266_19{width:100%;justify-content:flex-end}._createBtn_1t266_30,._logoutBtn_1t266_55{font-size:13px;padding:8px 14px}}._courseName_1t266_312{font-size:12px;color:#2c5fcb;margin-bottom:6px}._cardInstructors_1t266_318{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:10px}._cardInstructorTag_1t266_325{background:#eaf0fb;color:#2c5fcb;border-radius:10px;padding:2px 8px;font-size:12px}._modalOverlay_1t266_333{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100}._modal_1t266_130{background:#fff;border-radius:12px;padding:28px 32px;width:420px;box-shadow:0 8px 32px 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