@keyframes el-skeleton-loading-baa23958{0%{background-position:100% 50%}to{background-position:0 50%}}.skeleton-course[data-v-baa23958]{width:1200px;margin:30px auto;display:grid;row-gap:30px;-moz-column-gap:48px;column-gap:48px;grid-template-columns:repeat(4,minmax(0,1fr));overflow:hidden}.skeleton-course .skeleton-course-item[data-v-baa23958]{width:264px;height:auto;display:flex;flex-direction:column}.skeleton-course .skeleton-course-item .item-img[data-v-baa23958]{width:100%;height:198px;border-radius:8px 8px 0 0;background:linear-gradient(90deg,#f2f2f2 25%,#e6e6e6 37%,#f2f2f2 63%);background-size:400% 100%;animation:el-skeleton-loading-baa23958 1.4s ease infinite}.skeleton-course .skeleton-course-item .item-info[data-v-baa23958]{box-sizing:border-box;width:100%;height:75px;padding:15px}.skeleton-course .skeleton-course-item .item-info .item-info-title[data-v-baa23958]{width:100px;height:16px;margin-bottom:9px;background:linear-gradient(90deg,#f2f2f2 25%,#e6e6e6 37%,#f2f2f2 63%);background-size:400% 100%;animation:el-skeleton-loading-baa23958 1.4s ease infinite}.skeleton-course .skeleton-course-item .item-info .item-info-desc[data-v-baa23958]{width:60px;height:14px;background:linear-gradient(90deg,#f2f2f2 25%,#e6e6e6 37%,#f2f2f2 63%);background-size:400% 100%;animation:el-skeleton-loading-baa23958 1.4s ease infinite}.none[data-v-722d2ca5]{width:100%;min-height:300px;padding:80px 0 100px;background-color:#fcfcfc;display:flex;justify-content:center;align-items:center}.none.active[data-v-722d2ca5]{background-color:#fff}.none .empty-box[data-v-722d2ca5]{text-align:center;padding:50px 0}.none .empty-box .image-empty-item[data-v-722d2ca5]{display:block}.none .empty-box .image-empty-item img[data-v-722d2ca5]{height:150px;max-width:100%}.none .empty-box .word[data-v-722d2ca5]{font-size:16px;color:#bfbfbf;margin-top:10px}li[data-v-25fa9735],ul[data-v-25fa9735]{list-style:none}.clearfix[data-v-25fa9735]:after{content:".";height:0;display:block;visibility:hidden;clear:both;overflow:hidden}.cursor[data-v-25fa9735]{cursor:pointer}.cursor[data-v-25fa9735]:hover{opacity:.8}.clearfix[data-v-25fa9735]{zoom:1}.page-wrapper .fl[data-v-25fa9735]{float:left}.page-wrapper[data-v-25fa9735]{font-size:14px;color:#333}.h50[data-v-25fa9735]{display:inline-block;height:30px;line-height:30px;padding:0 12px}.page-wrapper .page-tab li[data-v-25fa9735]{float:left;width:30px;height:30px;text-align:center;line-height:30px;box-sizing:border-box}.page-wrapper .page-info[data-v-25fa9735]{margin-right:6px}.page-wrapper .page-info .h50[data-v-25fa9735]{border:none;padding:0}.items-choose .h50[data-v-25fa9735]{padding:0;border:0 none;border-top:1px solid #eaedf1;border-bottom:1px solid #eaedf1;box-sizing:border-box;padding:0 6px}.items-choose .items-show[data-v-25fa9735]{height:30px;width:74px;box-sizing:border-box;border:1px solid #eaedf1;position:relative}.items-choose .items-show input[data-v-25fa9735]{height:100%;width:100%;text-align:center}.items-choose .items-show[data-v-25fa9735]:after{content:"";position:absolute;height:0;border:4px solid transparent;border-top:6px solid #c4ccc5;top:50%;right:10px;transform:translate3d(-50,-50,0);cursor:pointer}.items-choose .items-num[data-v-25fa9735]{width:100%;position:absolute;bottom:42px;border:1px solid #eaedf1;z-index:100;background:#f5f7fa;z-index:999}.items-choose .items-num li[data-v-25fa9735]{padding:10px 0 10px 6px;font-size:14px}.page-wrapper .activePage[data-v-25fa9735]{color:#3ca7fa}.canNot[data-v-25fa9735]{cursor:not-allowed}.btn-icon[data-v-25fa9735]{width:16px;height:16px}.page-wrapper button[data-v-25fa9735]{font-size:14px;color:#ccc;border:none}.page-wrapper button[data-v-25fa9735]:focus{outline:0}.chooseNum[data-v-25fa9735]{cursor:pointer;font-size:14px;color:#333}.catalog-container[data-v-49144b4f]{background-color:#fcfcfc;min-height:100vh;font-family:PingFang SC,Microsoft YaHei,sans-serif}.filter-section[data-v-49144b4f]{background:#fff;padding:24px 0;border-bottom:1px solid #ebeef5}.filter-wrapper[data-v-49144b4f]{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center}.categories[data-v-49144b4f]{display:flex;gap:12px;flex-wrap:wrap}.filter-btn[data-v-49144b4f]{outline:none;padding:8px 20px;border-radius:20px;border:1px solid #dcdfe6;background:#fff;color:#606266;cursor:pointer;transition:all .3s;font-size:14px}.filter-btn[data-v-49144b4f]:hover{color:#409eff;border-color:#c6e2ff;background-color:#ecf5ff}.filter-btn.active[data-v-49144b4f]{background:#409eff;color:#fff;border-color:#409eff;box-shadow:0 4px 12px rgba(64,158,255,.3)}.catalog-stats[data-v-49144b4f]{font-size:14px;color:#909399}.catalog-stats .count[data-v-49144b4f]{color:#409eff;font-weight:700;margin:0 4px}.course-main[data-v-49144b4f]{max-width:1200px;margin:30px auto;padding:0 20px}.course-grid[data-v-49144b4f]{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:25px}.course-card[data-v-49144b4f]{background:#fff;border-radius:12px;overflow:hidden;transition:all .3s cubic-bezier(.25,.8,.25,1);border:1px solid #f0f0f0;display:flex;flex-direction:column}.course-card[data-v-49144b4f]:hover{transform:translateY(-8px);box-shadow:0 12px 24px rgba(0,0,0,.1)}.course-thumb[data-v-49144b4f]{position:relative;height:200px;background:#eee}.course-thumb img[data-v-49144b4f]{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.status-badge[data-v-49144b4f]{position:absolute;top:12px;left:12px;padding:4px 12px;border-radius:4px;font-size:12px;font-weight:500;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;gap:4px}.status-badge.unlocked[data-v-49144b4f]{background:rgba(103,194,58,.9);color:#fff}.status-badge.locked[data-v-49144b4f]{background:rgba(0,0,0,.6);color:#fff}.course-info[data-v-49144b4f]{padding:20px;flex:1;display:flex;flex-direction:column}.course-title[data-v-49144b4f]{font-size:18px;color:#303133;line-height:1.4;height:2.2em}.course-desc[data-v-49144b4f],.course-title[data-v-49144b4f]{overflow:hidden;display:-webkit-box;line-clamp:2;-webkit-box-orient:vertical}.course-desc[data-v-49144b4f]{font-size:14px;color:#909399;line-height:1.6;margin-bottom:20px;flex:1;text-overflow:ellipsis;-webkit-line-clamp:2}.course-footer[data-v-49144b4f]{display:flex;justify-content:space-between;align-items:center;padding-top:15px;border-top:1px solid #f2f6fc}.view-count[data-v-49144b4f]{font-size:13px;color:#909399}.action-btn[data-v-49144b4f]{outline:none;background-color:#409eff;color:#fff;border:none;padding:8px 16px;border-radius:20px;font-size:14px;cursor:pointer;transition:background .3s}.action-btn[data-v-49144b4f]:hover{background:#66b1ff}.action-btn.btn-outline[data-v-49144b4f]{background:#fff;color:#409eff;border:1px solid #409eff}.action-btn.btn-outline[data-v-49144b4f]:hover{background:#ecf5ff}#page[data-v-49144b4f]{display:flex;justify-content:center;padding:40px 0 60px}@media (max-width:768px){.course-grid[data-v-49144b4f]{grid-template-columns:1fr}.filter-wrapper[data-v-49144b4f]{flex-direction:column;gap:15px;align-items:flex-start}}