.app-header[data-v-2a339900]{position:fixed;top:0;left:0;right:0;background-color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.1);z-index:100}.header-content[data-v-2a339900]{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1200px;margin:0 auto;padding:0 20px}.logo-link[data-v-2a339900]{display:flex;align-items:center;margin-right:5.3125rem}.logo-img[data-v-2a339900]{height:60px;width:auto;-o-object-fit:contain;object-fit:contain}.main-nav[data-v-2a339900]{display:flex;gap:2.5rem;flex:1;justify-content:flex-start;min-width:450px}.nav-link[data-v-2a339900]{text-decoration:none;color:var(--text-color);font-weight:500;transition:color .3s ease;position:relative}.nav-link.router-link-active[data-v-2a339900],.nav-link[data-v-2a339900]:hover{color:var(--primary-color)}.nav-link.router-link-active[data-v-2a339900]:after{content:"";position:absolute;bottom:-5px;left:0;width:100%;height:2px;background-color:var(--primary-color)}.user-actions[data-v-2a339900]{display:flex;align-items:center;gap:1rem;flex-shrink:0;justify-content:flex-end}.btn[data-v-2a339900]{padding:8px 16px;border-radius:4px;text-decoration:none;font-weight:500;transition:all .3s ease;border:none;cursor:pointer;font-size:14px}.btn-primary[data-v-2a339900]{background-color:var(--primary-color,#409eff);color:#fff}.btn-primary[data-v-2a339900]:hover{background-color:var(--primary-color-hover,#66b1ff)}.btn-outline[data-v-2a339900]{background-color:transparent;color:var(--primary-color,#409eff);border:1px solid var(--primary-color,#409eff)}.btn-outline[data-v-2a339900]:hover{background-color:var(--primary-color,#409eff);color:#fff}@media (max-width:1200px){.main-nav[data-v-2a339900]{gap:1rem}}@media (max-width:768px){.header-content[data-v-2a339900]{padding:0 10px}.logo-link[data-v-2a339900]{margin-right:1rem}.logo-img[data-v-2a339900]{height:35px}.main-nav[data-v-2a339900]{display:none}}.app-footer[data-v-207d00f4]{background-color:#333;color:#fff;padding:3rem 0 1rem;z-index:888}.footer-content[data-v-207d00f4]{display:grid;grid-template-columns:1fr 2fr;gap:2rem;margin-bottom:2rem}.footer-info[data-v-207d00f4]{display:flex;flex-direction:column;gap:1.5rem}.footer-logo[data-v-207d00f4]{display:flex;justify-content:center}.footer-logo-img[data-v-207d00f4]{height:100px;width:auto;margin-bottom:.5rem}.service-description[data-v-207d00f4]{font-size:1rem;line-height:1.6;color:#ccc;margin-bottom:.5rem}.contact-info[data-v-207d00f4]{display:flex;flex-direction:row;gap:.5rem}.footer-links[data-v-207d00f4]{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.link-group[data-v-207d00f4]{display:flex;flex-direction:column;gap:.5rem}.link-group h3[data-v-207d00f4]{margin-bottom:1rem;font-size:1.2rem}.link-group a[data-v-207d00f4]{color:#ccc;text-decoration:none;transition:color .3s ease}.link-group a[data-v-207d00f4]:hover{color:var(--primary-color)}.footer-bottom[data-v-207d00f4]{display:flex;align-items:center;justify-content:center;padding-top:1.5rem}.footer-bottom a[data-v-207d00f4],.footer-bottom a[data-v-207d00f4]:hover{color:#fff;text-decoration:none}.social-links[data-v-207d00f4]{display:flex;gap:1rem}.social-links a[data-v-207d00f4]{color:#fff;font-size:1.2rem;transition:color .3s ease}.social-links a[data-v-207d00f4]:hover{color:var(--primary-color)}@media (max-width:768px){.footer-content[data-v-207d00f4]{grid-template-columns:1fr}.footer-links[data-v-207d00f4]{grid-template-columns:repeat(2,1fr);gap:1.5rem}}@media (max-width:480px){.footer-links[data-v-207d00f4]{grid-template-columns:1fr}.footer-bottom[data-v-207d00f4]{flex-direction:column;gap:1rem;text-align:center}}body{margin:0;padding:0;font-family:Helvetica Neue,Helvetica,PingFang SC,Hiragino Sans GB,Microsoft YaHei,微软雅黑,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f7fa}.app-container{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding-top:0;min-height:400px}.admin-content,.teacher-content{padding-top:0}.frontend-content{padding-top:60px}.fade-enter-active,.fade-leave-active{transition:opacity .3s ease}.fade-enter-from,.fade-leave-to{opacity:0}.el-breadcrumb[data-v-10348e5c]{line-height:60px;font-size:14px}.admin-layout[data-v-0715e0b5]{display:flex;height:100vh;background-color:#f0f2f5}.sidebar[data-v-0715e0b5]{width:220px;height:100%;background-color:#001529;transition:width .3s;overflow-x:hidden;box-shadow:2px 0 6px rgba(0,21,41,.35)}.sidebar.collapsed[data-v-0715e0b5]{width:60px}.logo-container[data-v-0715e0b5]{height:60px;display:flex;align-items:center;justify-content:center;padding:0 16px;overflow:hidden;background:#002140}.logo-img[data-v-0715e0b5]{width:32px;height:32px;margin-right:12px}.logo-text[data-v-0715e0b5]{color:#fff;font-size:18px;font-weight:600;white-space:nowrap;opacity:1;transition:opacity .3s}.sidebar-menu[data-v-0715e0b5]{border-right:none}.sidebar-menu[data-v-0715e0b5]:not(.el-menu--collapse){width:220px}.main-container[data-v-0715e0b5]{flex:1;display:flex;flex-direction:column;min-width:0;background:#f0f2f5;transition:margin-left .3s}.navbar[data-v-0715e0b5]{height:60px;background:#fff;box-shadow:0 1px 4px rgba(173,216,200,.08);justify-content:space-between;padding:0 16px}.navbar-left[data-v-0715e0b5],.navbar[data-v-0715e0b5]{display:flex;align-items:center}.toggle-button[data-v-0715e0b5]{padding:0 12px;height:100%;font-size:16px;cursor:pointer;transition:background .3s}.toggle-button[data-v-0715e0b5]:hover{background:rgba(0,0,0,.025)}.navbar-right[data-v-0715e0b5]{display:flex;align-items:center}.right-menu-item[data-v-0715e0b5]{padding:0 12px;cursor:pointer;transition:background .3s}.right-menu-item[data-v-0715e0b5]:hover{background:rgba(0,0,0,.025)}.avatar-container[data-v-0715e0b5]{margin-left:12px;cursor:pointer}.avatar-wrapper[data-v-0715e0b5]{display:flex;align-items:center;padding:0 12px}.user-name[data-v-0715e0b5]{margin:0 8px;font-size:14px;color:rgba(0,0,0,.85)}.app-main[data-v-0715e0b5]{flex:1;padding:10px 16px 16px 16px;overflow-y:auto}.fade-transform-enter-active[data-v-0715e0b5],.fade-transform-leave-active[data-v-0715e0b5]{transition:all .3s}.fade-transform-enter-from[data-v-0715e0b5]{opacity:0;transform:translateX(-30px)}.fade-transform-leave-to[data-v-0715e0b5]{opacity:0;transform:translateX(30px)}.teacher-header[data-v-07e2094b]{height:80px;background:#307cf4;display:flex;align-items:center;justify-content:space-between;padding:0 20px;position:fixed;top:0;left:0;right:0;padding-bottom:20px;z-index:1;min-width:1300px;overflow-x:auto;overflow-y:hidden}.teacher-header.has-school-logo[data-v-07e2094b]{background:#307cf4}.header-left[data-v-07e2094b]{display:flex;align-items:center;flex-shrink:0;width:280px}.logo[data-v-07e2094b]{display:flex;align-items:center;gap:10px}.logo-img[data-v-07e2094b]{margin-top:20px;margin-left:-10px;height:4rem;width:14rem;min-width:14rem;min-height:4rem;border:2px solid #fff;border-radius:8px;-o-object-fit:contain;object-fit:contain;background-color:#fff}.logo-text[data-v-07e2094b]{font-size:18px;font-weight:700;color:#409eff}.header-center[data-v-07e2094b]{flex:1;display:flex;justify-content:center;gap:1rem;margin-top:20px;min-width:700px;overflow:visible}.header-menu[data-v-07e2094b]{border-bottom:none;background-color:#307cf4;gap:1rem}.header-right[data-v-07e2094b]{display:flex;align-items:center;margin-top:20px;flex-shrink:0;width:200px;justify-content:flex-end}[data-v-07e2094b] .el-menu--horizontal{border-bottom:none!important}[data-v-07e2094b] .el-menu-item{font-size:16px;white-space:nowrap;overflow:visible;text-overflow:unset;min-width:auto;flex-shrink:0}.user-info[data-v-07e2094b]{display:flex;align-items:center;gap:8px;cursor:pointer;padding:8px 12px;border-radius:6px;transition:background-color .3s}.user-info[data-v-07e2094b]:hover{background-color:#f5f7fa}.user-avatar[data-v-07e2094b]{width:32px;height:32px;border-radius:50%;-o-object-fit:cover;object-fit:cover;border:2px solid #fff;box-shadow:0 2px 4px rgba(0,0,0,.1)}.username[data-v-07e2094b]{font-size:14px;color:#fff;font-weight:500}@media (max-width:1300px){.header-left[data-v-07e2094b]{width:200px}.logo-img[data-v-07e2094b]{height:2.5rem;width:8rem}.header-right[data-v-07e2094b]{width:150px}.header-center[data-v-07e2094b]{min-width:600px}}@media (max-width:768px){.header-left[data-v-07e2094b]{width:120px}.logo-img[data-v-07e2094b]{height:2rem;width:6rem}.header-right[data-v-07e2094b]{width:100px}.username[data-v-07e2094b]{display:none}}[data-v-07e2094b] .el-menu--horizontal .el-menu-item,[data-v-07e2094b] .el-menu--horizontal .el-sub-menu{display:flex!important}@media (min-width:769px){[data-v-07e2094b] .el-menu--horizontal .el-menu-item,[data-v-07e2094b] .el-menu--horizontal .el-menu-item.is-hidden,[data-v-07e2094b] .el-menu--horizontal .el-sub-menu,[data-v-07e2094b] .el-menu--horizontal .el-sub-menu.is-hidden{display:flex!important;visibility:visible!important}}.teacher-sidebar[data-v-c15de16a]{width:220px;min-width:220px;background:#fff;border-right:1px solid #e4e7ed;height:calc(100vh - 70px);overflow-y:auto;overflow-x:visible;transition:all .3s;border-radius:0 12px 12px 0;padding-top:3rem;flex-shrink:0;position:relative;margin-top:20px}.teacher-sidebar[data-v-c15de16a]:has(.sidebar-menu.el-menu--collapse){width:64px;min-width:64px}.sidebar-menu[data-v-c15de16a]{border-right:none;height:100%;overflow:visible}.sidebar-menu .el-menu-item .el-icon[data-v-c15de16a],.sidebar-menu .el-sub-menu__title .el-icon[data-v-c15de16a]{width:18px;height:18px;flex:0 0 18px;display:inline-flex;align-items:center;justify-content:center;opacity:1;visibility:visible}.sidebar-menu .el-menu-item .el-icon svg[data-v-c15de16a],.sidebar-menu .el-sub-menu__title .el-icon svg[data-v-c15de16a]{width:18px;height:18px;opacity:1;visibility:visible}.sidebar-menu[data-v-c15de16a]:not(.el-menu--collapse){width:100%;min-width:0}.el-sub-menu img[data-v-c15de16a]{margin-right:7px}.sidebar-menu.el-menu--collapse .el-menu-item span[data-v-c15de16a],.sidebar-menu.el-menu--collapse .el-menu-item-group__title[data-v-c15de16a],.sidebar-menu.el-menu--collapse .el-sub-menu__title span[data-v-c15de16a]{display:none}.sidebar-menu.el-menu--collapse .el-menu-item-group__title[data-v-c15de16a]{padding:0;height:0;line-height:0;overflow:hidden}.sidebar-menu .el-menu-item[data-v-c15de16a]{font-size:13px;position:relative;padding-left:50px!important;height:40px!important;line-height:40px!important;white-space:nowrap;overflow:visible;text-overflow:unset}.sidebar-menu .el-sub-menu__title[data-v-c15de16a]{padding-right:28px!important}.sidebar-menu .el-sub-menu__icon-arrow[data-v-c15de16a]{right:12px}.sidebar-menu .el-menu-item span[data-v-c15de16a],.sidebar-menu .el-sub-menu__title span[data-v-c15de16a]{white-space:nowrap;overflow:visible;text-overflow:unset}.sidebar-menu .el-menu-item[data-v-c15de16a]:before{content:"";position:absolute;left:30px;top:50%;transform:translateY(-50%);width:6px;height:6px;background-color:#409eff;border-radius:50%;transition:all .3s}.sidebar-menu.el-menu--collapse .el-menu-item[data-v-c15de16a]:before{display:none}.sidebar-menu .el-menu-item.main-spacer[data-v-c15de16a]{padding-left:20px!important;pointer-events:none;background-color:transparent!important;color:transparent!important;cursor:default}.sidebar-menu .el-menu-item.main-spacer .el-icon[data-v-c15de16a]{display:none}.sidebar-menu .el-menu-item.main-spacer[data-v-c15de16a]:hover{background-color:transparent!important;color:transparent!important}.sidebar-menu .el-menu-item.main-spacer[data-v-c15de16a]:before{display:none}.collapse-btn[data-v-c15de16a]{position:absolute;top:10px;right:15px;width:32px;height:32px;background:#f5f7fa;border:1px solid #e4e7ed;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .1s;z-index:1}.collapse-btn .el-icon[data-v-c15de16a]{font-size:18px}.collapse-btn[data-v-c15de16a]:hover{background:#409eff;color:#fff;border-color:#409eff}.teacher-sidebar[data-v-c15de16a]::-webkit-scrollbar{display:none}.teacher-sidebar[data-v-c15de16a]{-ms-overflow-style:none;scrollbar-width:none}@media (max-width:768px){.teacher-sidebar[data-v-c15de16a]{transform:translateX(-100%);transition:transform .3s}.teacher-sidebar.mobile-show[data-v-c15de16a]{transform:translateX(0)}}.teacher-layout[data-v-bb945ebe]{min-height:100vh;background-color:#f5f7fa;position:relative;overflow-x:hidden}.teacher-layout.fixed-layout[data-v-bb945ebe]{height:100vh;overflow:hidden}.blue-background[data-v-bb945ebe]{position:fixed;top:0;left:0;width:100vw;height:10rem;background-color:#307cf4;z-index:1}.teacher-main[data-v-bb945ebe]{display:flex;min-height:calc(100vh - 60px);margin-top:60px;position:relative;z-index:2}.teacher-content[data-v-bb945ebe]{flex:1;padding:10px 0 0 20px;background-color:transparent;min-width:0}.content-container[data-v-bb945ebe]{background-color:#fff;border-radius:12px 0 0 0;padding:20px;box-shadow:0 2px 8px rgba(0,0,0,.1);margin-top:10px}.content-container.fixed-content[data-v-bb945ebe],.content-container[data-v-bb945ebe]{height:calc(100vh - 80px);overflow-y:auto;overflow-x:auto}@media (max-width:768px){.teacher-content[data-v-bb945ebe]{margin-left:0;padding:10px}.content-container[data-v-bb945ebe]{border-radius:12px 12px 0 0}}.header[data-v-0abe8ac9]{background:#fff;border-bottom:1px solid #e4e7ed;padding:0;height:60px;line-height:60px}.header-content[data-v-0abe8ac9]{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:0 20px}.logo-section[data-v-0abe8ac9]{display:flex;align-items:center}.logo-img[data-v-0abe8ac9]{width:250px;height:60px;-o-object-fit:contain;object-fit:contain;margin-right:10px}.nav-links[data-v-0abe8ac9]{display:flex;gap:30px}.search-input[data-v-0abe8ac9]{width:150px}.user-section[data-v-0abe8ac9]{display:flex;align-items:center;gap:15px}.username[data-v-0abe8ac9]{color:#333;font-weight:500}.exit-icon[data-v-0abe8ac9]{width:16px;height:16px;margin-right:5px;vertical-align:middle}a.el-link.el-link--primary[data-v-0abe8ac9]{color:#000!important}.el-link.el-link--primary[data-v-0abe8ac9]{--el-link-text-color:#000!important;--el-link-hover-text-color:var(--el-color-primary-light-3);--el-link-disabled-text-color:var(--el-color-primary-light-5)}.student-layout[data-v-135a6c4b]{min-height:100vh;background-color:#f5f7fa;position:relative;overflow-x:hidden;display:flex;flex-direction:column}.student-main[data-v-135a6c4b]{flex:1;background-color:transparent}.content-container[data-v-135a6c4b]{background-color:#fff;padding:20px;min-height:calc(100vh - 80px)}:root{--primary-color:#409eff;--primary-hover:#2563eb;--secondary-color:#10b981;--secondary-hover:#059669;--danger-color:#f56c6c;--warning-color:#e6a23c;--text-color:#303133;--text-light:#6b7280;--bg-color:#f5f7fa;--card-bg:#fff;--border-color:#dcdfe6;--border-radius:8px;--shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--success-color:#67c23a;--info-color:#909399;--text-color-secondary:#606266;--background-color:#f5f7fa}body,html{height:100%;margin:0;padding:0}body.admin-page{overflow:hidden}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-color);line-height:1.6}.container{width:100%;max-width:1500px;margin:0 auto}.btn{display:inline-block;padding:8px 16px;border-radius:4px;font-size:14px;font-weight:500;text-decoration:none;cursor:pointer;transition:all .3s ease}.btn-primary{background-color:var(--primary-color);color:#fff;border:none}.btn-primary:hover{background-color:#66b1ff}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-secondary:hover{background-color:var(--secondary-hover)}.card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 12px 0 rgba(0,0,0,.1);transition:transform .3s ease}.card:hover{transform:translateY(-5px)}.card-img{width:100%;height:200px;overflow:hidden}.card-img img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.card-body{padding:15px}.card-title{margin:0 0 10px;font-size:16px;font-weight:500;color:var(--text-color)}.card-info{display:flex;align-items:center;gap:15px;margin-bottom:10px}.card-desc,.card-info{color:var(--text-color-secondary);font-size:14px}.card-desc{margin:0 0 15px;line-height:1.5}.section{padding:3rem 0}.section-title{font-size:1.75rem;margin-bottom:1.5rem;font-weight:600;position:relative;padding-bottom:.5rem}.section-title:after{content:"";position:absolute;bottom:0;left:0;width:60px;height:3px;background-color:var(--primary-color)}.grid{display:grid;gap:20px;margin:20px 0}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width:1200px){.grid-4{grid-template-columns:repeat(3,1fr)}}@media (max-width:992px){.grid-4{grid-template-columns:repeat(2,1fr)}}@media (max-width:576px){.grid-4{grid-template-columns:1fr}}.admin-page{background-color:#f0f2f5}.header-banner{margin-top:-15px}.admin-content{min-height:calc(100vh - 60px)}.admin-card{margin-bottom:20px;border-radius:4px;box-shadow:0 1px 3px rgba(0,0,0,.1)}.admin-page-title{font-size:20px;font-weight:600;margin-bottom:20px;color:#001529}.admin-page-content{padding:24px;background:#fff;border-radius:4px}.admin-table{width:100%;border-radius:4px;overflow:hidden}.admin-form{max-width:800px}.admin-button-group{display:flex;justify-content:flex-end;margin-top:20px;gap:10px}.admin-stat-card{height:100%;display:flex;flex-direction:column;justify-content:space-between}.admin-stat-card .title{font-size:14px;color:rgba(0,0,0,.65)}.admin-stat-card .value{font-size:24px;font-weight:600;margin:10px 0}.admin-stat-card .trend{display:flex;align-items:center;font-size:12px}.admin-stat-card .trend.up{color:#f5222d}.admin-stat-card .trend.down{color:#52c41a}