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920px){.card:has(.tbl){overflow-x:auto;-webkit-overflow-scrolling:touch}.card:has(.tbl) .tbl{min-width:440px}.question-admin-table-card:has(.tbl) .tbl{min-width:0}}.q-check{width:15px;height:15px}.code-pill{font-family:var(--font-mono);font-weight:600;font-size:13px;color:var(--primary-container)}.dropzone-file{display:inline-flex}.data{width:100%;border-collapse:collapse;font-size:13px}.data th{text-align:left;font-size:11px;letter-spacing:.08em;color:var(--outline);font-weight:500;padding:10px 12px;border-bottom:1px solid rgba(74,92,106,.25);white-space:nowrap}.data td{padding:11px 12px;border-bottom:1px solid rgba(74,92,106,.12);vertical-align:middle}.data tbody tr:hover{background:#2fb7a50f}.data a{color:var(--secondary-fixed-dim);font-weight:500}.notif{position:relative}.notif-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:none;background:none;color:var(--on-surface, #222);cursor:pointer}.notif-btn:hover{background:var(--surface-container, #f3f3f3)}.notif-badge{position:absolute;top:-4px;right:-4px;min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:#e5484d;color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}.notif-menu{position:absolute;right:0;top:46px;width:340px;max-width:86vw;background:var(--surface-container-low, #fff);border:1px solid var(--outline-variant, rgba(0,0,0,.12));border-radius:12px;box-shadow:0 10px 34px #0000002e;z-index:60;overflow:hidden}.notif-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--outline-variant, rgba(0,0,0,.1));font-weight:600;font-size:13.5px}.notif-head button{border:none;background:none;color:var(--primary-container, #2f6f63);font-size:12px;cursor:pointer}.notif-list{max-height:60vh;overflow:auto}.notif-empty{padding:26px 14px;text-align:center;color:var(--outline, #888);font-size:13px}.notif-row{position:relative;overflow:hidden;border-bottom:1px solid var(--outline-variant, rgba(0,0,0,.06))}.notif-row-del{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:flex-end;padding-right:18px;background:var(--error, #e5484d);color:#fff}.notif-item{position:relative;display:block;width:100%;text-align:left;padding:11px 14px;border:none;background:var(--surface-container-low, #fff);cursor:pointer;touch-action:pan-y}.notif-item:hover{background:var(--surface-container, #f5f5f5)}.notif-item.unread{background:color-mix(in srgb,var(--primary-container, #2f6f63) 8%,var(--surface-container-low, #fff))}.notif-x{position:absolute;top:8px;right:8px;width:22px;height:22px;border-radius:6px;display:none;align-items:center;justify-content:center;color:var(--outline, #888)}.notif-row:hover .notif-x{display:inline-flex}.notif-x:hover{background:var(--surface-container-high, #e9e9e9);color:var(--error, #e5484d)}.notif-title{font-size:13px;font-weight:600;color:var(--on-surface, #222)}.notif-body{font-size:12px;color:var(--on-surface-variant, #666);margin-top:2px}.notif-time{font-size:11px;color:var(--outline, #999);margin-top:3px;font-family:var(--font-mono)}.notif-foot{border-top:1px solid var(--outline-variant, rgba(0,0,0,.1))}.notif-foot button{width:100%;padding:11px 14px;border:none;background:none;color:var(--error, #e5484d);font-size:12.5px;cursor:pointer;text-align:center}.notif-foot button:hover{background:var(--surface-container, #f5f5f5)}.composer{display:flex;flex-direction:column;gap:6px}.composer .textarea{width:100%;resize:vertical}.composer-files{display:flex;flex-wrap:wrap;gap:6px}.composer-files .chip{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border-radius:8px;background:var(--surface-container, #eee);font-size:12px}.composer-files .chip button{border:none;background:none;cursor:pointer;color:var(--outline, #888)}.post{display:flex;gap:12px}.post-main{flex:1;min-width:0}.post-head{display:flex;align-items:center;gap:8px}.post-author{font-weight:600;font-size:13.5px}.post-badge{margin-left:6px;font-size:10px;font-weight:700;padding:1px 6px;border-radius:6px;background:color-mix(in srgb,var(--primary-container, #2f6f63) 18%,transparent);color:var(--primary-container, #2f6f63)}.post-time{font-size:11.5px;color:var(--outline, #999);font-family:var(--font-mono)}.post-del{margin-left:auto;border:none;background:none;color:var(--outline, #999);cursor:pointer}.post-del:hover{color:#e5484d}.post-body{margin-top:5px;font-size:13.5px;line-height:1.6;white-space:pre-wrap;word-break:break-word}.post-attach{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.post-img img{max-width:220px;max-height:200px;border-radius:8px;display:block;border:1px solid var(--outline-variant, rgba(0,0,0,.1))}.post-file{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:8px;background:var(--surface-container, #eee);font-size:12.5px;text-decoration:none;color:var(--on-surface, #222)}.post-actions{margin-top:6px}.post-actions button{border:none;background:none;color:var(--primary-container, #2f6f63);font-size:12px;cursor:pointer;padding:0}.post-replies{margin-top:12px;padding-left:14px;border-left:2px solid var(--outline-variant, rgba(0,0,0,.1));display:flex;flex-direction:column;gap:14px}.sub-files{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.class-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(280px,100%),1fr));gap:14px}.class-card{display:flex;align-items:center;gap:14px;text-align:left;cursor:pointer}.class-card-ic{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--primary-container, #2f6f63) 14%,transparent);color:var(--primary-container, #2f6f63);flex:none}.class-card-main{flex:1;min-width:0}.class-card-name{font-weight:600;font-size:15px}.class-card-sub{font-size:12.5px;color:var(--on-surface-variant, #666);margin-top:2px}.class-card-meta{font-size:12px;color:var(--outline, #999);display:inline-flex;align-items:center;gap:5px;flex:none}.class-hero{display:flex;align-items:center;gap:16px;margin-top:12px}.class-hero-ic{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--primary-container, #2f6f63) 14%,transparent);color:var(--primary-container, #2f6f63);flex:none}.class-hero-name{font-size:20px;font-weight:700}.member-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.member{display:flex;align-items:center;gap:10px}.member-info{min-width:0}.member-name{font-size:13.5px;font-weight:600;display:flex;align-items:center}.react-bar{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:8px}.react-chip{display:inline-flex;align-items:center;gap:4px;padding:2px 9px;border-radius:12px;border:1px solid var(--outline-variant, rgba(0,0,0,.12));background:var(--surface-container-low, #fff);font-size:12.5px;cursor:pointer;line-height:1.6}.react-chip:hover{background:var(--surface-container, #f3f3f3)}.react-chip.mine{border-color:var(--primary-container, #2f6f63);background:color-mix(in srgb,var(--primary-container, #2f6f63) 12%,transparent);color:var(--primary-container, #2f6f63)}.react-chip.add{color:var(--outline, #888);font-weight:700}.react-add{position:relative}.react-pop{position:absolute;bottom:calc(100% + 6px);left:0;z-index:30;display:flex;gap:2px;padding:5px;background:var(--surface-container-low, #fff);border:1px solid var(--outline-variant, rgba(0,0,0,.14));border-radius:10px;box-shadow:0 6px 20px #00000029}.react-pop button{border:none;background:none;font-size:18px;cursor:pointer;padding:2px 4px;border-radius:6px}.react-pop button:hover{background:var(--surface-container, #eee)}.mention{color:var(--primary-container, #2f6f63);font-weight:600}.chat{display:flex;flex-direction:column;padding:0;overflow:hidden}.chat-scroll{height:58vh;min-height:320px;overflow-y:auto;padding:16px 16px 8px;display:flex;flex-direction:column;gap:14px;background:var(--surface-container-lowest, #faf9f6)}.chat-empty{margin:auto;color:var(--outline, #999);font-size:13.5px}.chat-msg{display:flex;gap:10px;align-items:flex-start;max-width:78%}.chat-msg.mine{margin-left:auto;flex-direction:row-reverse}.chat-col{min-width:0;display:flex;flex-direction:column}.chat-msg.mine .chat-col{align-items:flex-end}.chat-name{font-size:11.5px;color:var(--on-surface-variant, #666);margin:0 4px 3px;display:flex;align-items:center;gap:4px}.chat-bubble{position:relative;padding:9px 12px;border-radius:14px;background:var(--surface-container-low, #fff);border:1px solid var(--outline-variant, rgba(0,0,0,.08));font-size:13.5px;line-height:1.55;word-break:break-word}.chat-msg.mine .chat-bubble{background:color-mix(in srgb,var(--primary-container, #2f6f63) 16%,#fff);border-color:color-mix(in srgb,var(--primary-container, #2f6f63) 28%,transparent)}.chat-text{white-space:pre-wrap}.chat-quote{border-left:3px solid var(--outline-variant, rgba(0,0,0,.18));padding:2px 8px;margin-bottom:6px;font-size:12px;color:var(--on-surface-variant, #666);background:#00000008;border-radius:4px}.chat-bubble .post-attach{margin-top:6px}.chat-bubble .post-img img{max-width:180px;max-height:160px}.chat-tools{position:absolute;top:-10px;right:8px;display:none;gap:2px;background:var(--surface-container-low, #fff);border:1px solid var(--outline-variant, rgba(0,0,0,.12));border-radius:8px;padding:2px;box-shadow:0 2px 8px #0000001a}.chat-msg.mine .chat-tools{right:auto;left:8px}.chat-bubble:hover .chat-tools{display:flex}.chat-tools button{border:none;background:none;cursor:pointer;color:var(--outline, #888);padding:3px;border-radius:5px}.chat-tools button:hover{background:var(--surface-container, #eee);color:var(--on-surface, #222)}.chat-foot{display:flex;align-items:center;gap:8px;margin:3px 4px 0}.chat-msg.mine .chat-foot{flex-direction:row-reverse}.chat-time{font-size:10.5px;color:var(--outline, #aaa);font-family:var(--font-mono)}.chat-foot .react-bar{margin-top:0}.chat-input{border-top:1px solid var(--outline-variant, rgba(0,0,0,.1));padding:12px 14px;background:var(--surface-container-low, #fff)}.chat-replying{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;color:var(--on-surface-variant, #666);background:var(--surface-container, #f3f3f3);border-radius:8px;padding:6px 10px;margin-bottom:8px}.chat-replying button{border:none;background:none;cursor:pointer;color:var(--outline, #888)}.chat-react-btn{position:relative;display:inline-flex}.chat-tools .react-pop{top:calc(100% + 4px);bottom:auto;left:50%;transform:translate(-50%)}.chat-msg.mine .chat-tools .react-pop{left:auto;right:0;transform:none}.chat-tools .recall:hover,.chat-tools button[title=Delete]:hover{color:var(--error, #e5484d)}.chat-tools button{font-size:14px;line-height:1}.card.announce{border-left:3px solid var(--gold, #c8a24d)}.ann-title{font-size:15px;font-weight:700;display:flex;align-items:center;gap:7px;color:var(--on-surface, #222)}.ann-body{margin-top:8px;font-size:13.5px;line-height:1.7;white-space:pre-wrap;word-break:break-word;color:var(--on-surface-variant, #555)}