.ai-teaching-assistant[data-v-2f4986cb]{width:100%;height:100vh;background:#f7f8fa;overflow:hidden}.header[data-v-2f4986cb]{height:64px!important;background:#fff;border-bottom:1px solid #e5e6eb;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;padding:0 28px;-webkit-box-shadow:0 2px 8px rgba(0,0,0,.04);box-shadow:0 2px 8px rgba(0,0,0,.04)}.header-left[data-v-2f4986cb],.header[data-v-2f4986cb],.logo[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.logo[data-v-2f4986cb]{gap:8px}.logo-text[data-v-2f4986cb]{font-size:22px;font-weight:700;color:#d81e06}.logo-sub[data-v-2f4986cb]{font-size:16px;color:#252933;font-weight:500}.header-right[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;gap:18px}.header-btn[data-v-2f4986cb]{padding:6px 14px;border-radius:6px}.usage[data-v-2f4986cb]{font-size:14px;color:#4e5969;gap:6px}.usage[data-v-2f4986cb],.user[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.user[data-v-2f4986cb]{gap:8px;color:#252933;font-weight:500}.badge[data-v-2f4986cb]{margin-left:4px}.main[data-v-2f4986cb]{-webkit-box-flex:1;-ms-flex:1;flex:1;display:-webkit-box;display:-ms-flexbox;display:flex;overflow:hidden}.sidebar[data-v-2f4986cb]{width:80px;background:#fff;border-right:1px solid #e5e6eb}.sidebar-menu[data-v-2f4986cb]{height:100%;border:none}.content[data-v-2f4986cb]{-webkit-box-flex:1;-ms-flex:1;flex:1;padding:28px 32px;overflow-y:auto;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column}.content-head[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.content-head h2[data-v-2f4986cb]{margin:0;font-size:20px;color:#1d2129;font-weight:600}.welcome-card[data-v-2f4986cb]{background:#fff;border-radius:12px;padding:16px 20px;border:1px solid #e5e6eb;-webkit-box-shadow:0 2px 12px rgba(0,0,0,.06);box-shadow:0 2px 12px rgba(0,0,0,.06)}.welcome-text[data-v-2f4986cb]{font-size:15px;color:#4e5969;line-height:1.6}.brand-red[data-v-2f4986cb]{color:#d81e06;font-weight:600}.card-group[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;gap:24px}.card[data-v-2f4986cb]{-webkit-box-flex:1;-ms-flex:1;flex:1;border-radius:12px;overflow:hidden;border:none;-webkit-box-shadow:0 4px 16px rgba(0,0,0,.06);box-shadow:0 4px 16px rgba(0,0,0,.06);-webkit-transition:all .3s;transition:all .3s}.card[data-v-2f4986cb]:hover{-webkit-transform:translateY(-4px);transform:translateY(-4px);-webkit-box-shadow:0 8px 24px rgba(0,0,0,.08);box-shadow:0 8px 24px rgba(0,0,0,.08)}.card1[data-v-2f4986cb]{background:linear-gradient(135deg,#fff9f7,#fffbf8)}.card2[data-v-2f4986cb]{background:linear-gradient(135deg,#f5f9ff,#fafcff)}.card-header[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;gap:6px;font-weight:600;font-size:15px;color:#1d2129;border-bottom:none;padding-bottom:0}.card-body p[data-v-2f4986cb]{font-size:14px;line-height:1.8;margin:10px 0;color:#4e5969}.highlight[data-v-2f4986cb]{color:#d81e06;font-weight:500}.new-session[data-v-2f4986cb]{text-align:center;margin:8px 0}.input-wrapper[data-v-2f4986cb]{margin-top:auto}.input-box[data-v-2f4986cb]{border-radius:12px;overflow:hidden;-webkit-box-shadow:0 4px 16px rgba(0,0,0,.08);box-shadow:0 4px 16px rgba(0,0,0,.08)}.config-panel[data-v-2f4986cb]{width:290px;background:#fff;border-left:1px solid #e5e6eb;padding:20px;overflow-y:auto}.config-tabs[data-v-2f4986cb]{border:none}.config-item[data-v-2f4986cb]{margin-bottom:26px}.config-item label[data-v-2f4986cb]{display:block;margin-bottom:10px;font-size:14px;color:#1d2129;font-weight:500}.required[data-v-2f4986cb]:after{content:"*";color:#f53f3f;margin-left:4px}.add-point[data-v-2f4986cb]{border:1px dashed #c9cdd4;border-radius:8px;padding:12px;text-align:center;-webkit-transition:all .2s;transition:all .2s}.add-point[data-v-2f4986cb]:hover{border-color:#409eff;background:#f5f9ff}.flex-row[data-v-2f4986cb]{gap:16px}.count-group[data-v-2f4986cb],.flex-row[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.count-group[data-v-2f4986cb]{gap:10px}.count-group span[data-v-2f4986cb]{width:32px;text-align:center;font-size:14px;font-weight:500}.difficulty-group[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-ms-flex-wrap:wrap;flex-wrap:wrap;gap:10px}.advanced-box[data-v-2f4986cb]{margin-top:12px;padding:16px;border-radius:8px;border:1px dashed #e5e6eb;background:#fafafa}.empty-tip[data-v-2f4986cb]{text-align:center;padding:40px 0;color:#86909c;font-size:14px}.sidebar-item[data-v-2f4986cb]{margin-bottom:12px;width:72px;cursor:pointer;display:-ms-flexbox;display:-webkit-box;display:flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;padding:12px;height:72px}.sidebar-item.active[data-v-2f4986cb]{-webkit-filter:grayscale(0);filter:grayscale(0);background:#fff;border-radius:8px}.sidebar-item.active .text[data-v-2f4986cb]{font-weight:700;color:#333}.sidebar-item .text[data-v-2f4986cb]{color:#999;font-size:13px}.sidebar-item img[data-v-2f4986cb]{width:24px}.popover-box[data-v-2f4986cb]{width:100%}.popover-box .label-box[data-v-2f4986cb]{margin-top:5px;-webkit-box-pack:left;-ms-flex-pack:left;justify-content:left;-ms-flex-wrap:wrap;flex-wrap:wrap}.popover-box .label-box .label-title[data-v-2f4986cb],.popover-box .label-box[data-v-2f4986cb]{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.popover-box .label-box .label-title[data-v-2f4986cb]{font-weight:700;margin-left:10px;padding:5px;background:none;border:none;cursor:pointer}