.el-backtop{--el-backtop-bg-color:var(--el-bg-color-overlay);--el-backtop-text-color:var(--el-color-primary);--el-backtop-hover-bg-color:var(--el-border-color-extra-light);align-items:center;background-color:var(--el-backtop-bg-color);border-radius:50%;box-shadow:var(--el-box-shadow-lighter);color:var(--el-backtop-text-color);cursor:pointer;display:flex;font-size:20px;height:40px;justify-content:center;position:fixed;width:40px;z-index:5}.el-backtop:hover{background-color:var(--el-backtop-hover-bg-color)}.el-backtop__icon{font-size:20px}.container[data-v-ccbaf945],.course-container[data-v-ccbaf945]{box-sizing:border-box;margin:0 auto;max-width:1440px;padding:50px 20px}@media(max-width:1023px){.visible-sm[data-v-ccbaf945]{display:flex!important}.hidden-sm[data-v-ccbaf945]{display:none!important}}@media(min-width:1024px){.visible-lg[data-v-ccbaf945]{display:flex!important}.hidden-lg[data-v-ccbaf945]{display:none!important}}.card[data-v-ccbaf945]{background-color:#fff;border-radius:4px;box-shadow:0 2px 12px #0000001a;transition:all .3s}.card[data-v-ccbaf945]:hover{box-shadow:0 4px 20px #00000026;transform:translateY(-5px)}.list[data-v-ccbaf945]{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));margin-bottom:30px}.category-item[data-v-ccbaf945]{background-color:#f4f4f5;border-radius:4px;color:#909399;cursor:pointer;font-size:14px;padding:8px 16px;transition:all .3s}.category-item[data-v-ccbaf945]:hover{background-color:#ecf5ff;color:#15e164}.category-item.active[data-v-ccbaf945]{background-color:#15e164;color:#fff}.expandable-input[data-v-ccbaf945]{border-radius:20px!important;transition:all .8s ease;width:240px}.expandable-input[data-v-ccbaf945]:focus-within{margin-left:-120px;width:360px}@media(max-width:1023px){.expandable-input[data-v-ccbaf945]{margin:30px 0}}.footer[data-v-ccbaf945]{background-color:#fff;border-top:1px solid #dedede;box-sizing:border-box;color:#606266;margin-top:auto;width:100%}.footer-container[data-v-ccbaf945]{margin:0 auto;max-width:1440px;padding:0 20px}.links-section[data-v-ccbaf945]{border-bottom:1px solid #f0f0f0;padding:50px 0 30px}.links-grid[data-v-ccbaf945]{display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.link-category h3.category-title[data-v-ccbaf945]{border-bottom:1px solid #f0f0f0;color:#303133;font-size:16px;font-weight:600;margin-bottom:15px;padding-bottom:10px}.link-category ul.link-list[data-v-ccbaf945]{list-style:none;margin:0;padding:0}.link-category ul.link-list li[data-v-ccbaf945]{margin-bottom:10px}.link-category ul.link-list li a.footer-link[data-v-ccbaf945]{color:#606266;font-size:14px;text-decoration:none;transition:color .3s}.link-category ul.link-list li a.footer-link[data-v-ccbaf945]:hover{color:#15e164}.footer-bottom[data-v-ccbaf945]{color:#909399;font-size:14px;padding:20px 0;text-align:center}.footer-bottom a[data-v-ccbaf945]{color:#909399;text-decoration:none}.footer-bottom a[data-v-ccbaf945]:hover{color:#15e164}.qr-code-container .qr-code .qr-image[data-v-ccbaf945],.qr-container .qr-code .qr-image[data-v-ccbaf945]{height:120px;margin-bottom:10px;width:120px}.qr-code-container .qr-code .qr-caption[data-v-ccbaf945],.qr-code-container .qr-code p[data-v-ccbaf945],.qr-container .qr-code .qr-caption[data-v-ccbaf945],.qr-container .qr-code p[data-v-ccbaf945]{color:#606266;font-size:14px;margin:0}.qr-code-container .qr-description[data-v-ccbaf945],.qr-container .qr-description[data-v-ccbaf945]{color:#909399;font-size:12px;line-height:1.4;margin-top:10px}.subscribe-section .subscribe-desc[data-v-ccbaf945]{color:#606266;font-size:14px;margin-bottom:15px}.subscribe-section .subscribe-form[data-v-ccbaf945]{display:flex;margin-bottom:10px}.subscribe-section .subscribe-form .email-input[data-v-ccbaf945]{border:1px solid #dcdfe6;border-radius:4px 0 0 4px;flex:1;outline:none;padding:8px 12px;transition:border-color .3s}.subscribe-section .subscribe-form .email-input[data-v-ccbaf945]:focus{border-color:#15e164}.subscribe-section .subscribe-form .subscribe-btn[data-v-ccbaf945]{background-color:#15e164;border:none;border-radius:0 4px 4px 0;color:#fff;cursor:pointer;padding:8px 20px;transition:background-color .3s}.subscribe-section .subscribe-form .subscribe-btn[data-v-ccbaf945]:hover{background-color:#12c456}.subscribe-section .subscribe-note[data-v-ccbaf945]{color:#909399;font-size:12px}