.flex-center[data-v-2331044e],.flex[data-v-2331044e]{display:flex;align-items:center}.flex-center[data-v-2331044e]{justify-content:center}.flex-start[data-v-2331044e]{display:flex;justify-content:flex-start;align-items:center}.flex-between[data-v-2331044e]{display:flex;justify-content:space-between;align-items:center}.column-flex-center[data-v-2331044e]{flex-direction:column;display:flex;justify-content:center;align-items:center}.ellipsis-1[data-v-2331044e]{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.ellipsis-2[data-v-2331044e]{-webkit-line-clamp:2}.ellipsis-2[data-v-2331044e],.ellipsis-3[data-v-2331044e]{display:-webkit-box;-webkit-box-orient:vertical;text-overflow:ellipsis;overflow:hidden}.ellipsis-3[data-v-2331044e]{-webkit-line-clamp:3}.ellipsis-4[data-v-2331044e]{-webkit-line-clamp:4}.ellipsis-4[data-v-2331044e],.ellipsis-5[data-v-2331044e]{display:-webkit-box;-webkit-box-orient:vertical;text-overflow:ellipsis;overflow:hidden}.ellipsis-5[data-v-2331044e]{-webkit-line-clamp:5}.fit-text[data-v-2331044e]{display:inline-flex;justify-content:center;align-items:center;width:fit-content;padding-top:0;padding-bottom:0}.no-scroll-x[data-v-2331044e]{max-width:100%;overflow-x:hidden}.scrollbar[data-v-2331044e]{overflow-y:auto}.scrollbar[data-v-2331044e]::-webkit-scrollbar-thumb{border-radius:.3rem;border:.5rem solid #bbb;background:#fff}.scrollbar[data-v-2331044e]::-webkit-scrollbar{width:.5rem;height:0}.pointer[data-v-2331044e]{cursor:pointer}.scrollbar-y[data-v-2331044e]{overflow-y:auto}.scrollbar-y[data-v-2331044e]::-webkit-scrollbar-thumb{border-radius:.3rem;border:.5rem solid #bbb;background:#fff}.scrollbar-y[data-v-2331044e]::-webkit-scrollbar{width:.5rem;height:0}.page-container[data-v-2331044e]{width:120rem;min-height:63rem;margin:0 auto;padding:2rem}.page-container .search-bar[data-v-2331044e]{display:flex;align-items:center;justify-content:center}.page-container .search-bar .search-wrap[data-v-2331044e]{display:flex;align-items:center;justify-content:space-between;width:48rem;height:4.2rem;background:#fff;border-radius:.8rem .8rem .8rem .8rem;border:1px solid rgba(0,0,0,.14)}.page-container .search-bar .search-wrap .search-input[data-v-2331044e]{width:35rem}.page-container .search-bar .search-wrap .search-input[data-v-2331044e] .el-input__inner{height:3.5rem;border:none}.page-container .search-bar .search-wrap .el-button[data-v-2331044e]{width:8.8rem;height:3.6rem;background:#175e3d;border-radius:.5rem .5rem .5rem .5rem;border:none;margin-right:.3rem}.page-container .content-wrapper[data-v-2331044e]{display:flex;margin-top:4.2rem;gap:4.2rem;align-items:flex-start}.page-container .course-catalog[data-v-2331044e]{width:24rem;background-color:#fff;border-radius:.8rem;overflow:hidden;box-shadow:0 0 1.5rem 1px rgba(0,0,0,.1);flex-shrink:0}.page-container .course-catalog .catalog-header[data-v-2331044e]{background:#175e3d;padding:1.5rem 3.4rem;margin-bottom:0}.page-container .course-catalog .catalog-header h3[data-v-2331044e]{font-size:1.8rem;font-weight:700;color:#fff;margin:0;padding:0;border:none}.page-container .course-catalog .catalog-content[data-v-2331044e]{padding:1.8rem 0;background:#f7f7f7}.page-container .course-catalog .catalog-content .catalog-item[data-v-2331044e]{padding:1rem 0;cursor:pointer;font-size:1.4rem;color:#555;transition:color .3s ease}.page-container .course-catalog .catalog-content .catalog-item[data-v-2331044e]:hover{color:#175e3d}.page-container .course-catalog .catalog-content .catalog-item.active[data-v-2331044e]{color:#175e3d;font-weight:700}.page-container .course-catalog .catalog-content .catalog-section[data-v-2331044e]{border-bottom:1px solid #eee}.page-container .course-catalog .catalog-content .catalog-section .section-header[data-v-2331044e]{display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:1.6rem;color:#333;padding:1.3rem 2.2rem 1.3rem 3.4rem}.page-container .course-catalog .catalog-content .catalog-section .section-header.active[data-v-2331044e]{background:#e2efe9;color:#175e3d;font-weight:700}.page-container .course-catalog .catalog-content .catalog-section .section-header .el-icon-arrow-down[data-v-2331044e]{transition:transform .3s ease}.page-container .course-catalog .catalog-content .catalog-section .section-header .is-reverse[data-v-2331044e]{transform:rotate(180deg)}.page-container .course-catalog .catalog-content .catalog-section .section-content[data-v-2331044e]{padding-left:4.4rem}.page-container .course-catalog .catalog-content .catalog-section .section-content .catalog-item[data-v-2331044e]{padding:1.4rem 0;font-size:1.4rem;color:#616161;cursor:pointer;transition:color .3s ease}.page-container .course-catalog .catalog-content .catalog-section .section-content .catalog-item.active[data-v-2331044e],.page-container .course-catalog .catalog-content .catalog-section .section-content .catalog-item[data-v-2331044e]:hover{color:#175e3d}.page-container .course-content[data-v-2331044e]{flex:1;min-width:0;display:flex;flex-direction:column}.page-container .course-content .course-grid[data-v-2331044e]{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;margin-bottom:4rem}.page-container .course-content .course-grid .course-card[data-v-2331044e]{border-radius:.4rem;cursor:pointer;display:flex;flex-direction:column;transition:all .3s ease;overflow:hidden;box-shadow:0 0 1.5rem 1px rgba(0,0,0,.1);background:#f7f7f7;width:22rem}.page-container .course-content .course-grid .course-card[data-v-2331044e]:hover{transform:translateY(-.5rem);box-shadow:0 .4rem 1.6rem rgba(0,0,0,.2)}.page-container .course-content .course-grid .course-card .course-img[data-v-2331044e]{height:14rem;width:100%;position:relative;overflow:hidden}.page-container .course-content .course-grid .course-card .course-img img[data-v-2331044e]{width:100%;height:100%;object-fit:cover}.page-container .course-content .course-grid .course-card .course-content[data-v-2331044e]{padding:1.5rem;color:#333;flex:1;display:flex;flex-direction:column;justify-content:space-between}.page-container .course-content .course-grid .course-card .course-content .course-title[data-v-2331044e]{font-size:1.8rem;color:#3d3d3d;line-height:2.4rem;margin-bottom:2rem;min-height:4.8rem}.page-container .course-content .course-grid .course-card .course-content .course-stats[data-v-2331044e]{display:flex;justify-content:space-between;align-items:center;font-size:1.4rem;color:#8b8b8b}.page-container .course-content .course-grid .course-card .course-content .course-stats .student-count[data-v-2331044e],.page-container .course-content .course-grid .course-card .course-content .course-stats .study-hours[data-v-2331044e]{font-size:1.4rem}