#app-wrap.standalone-page{background:#f9fafb}#app-wrap.standalone-page .site-main{min-height:100vh}@media (width>=1201px){html,body,#app-wrap{min-width:1200px}}.base-header{background:var(--card);z-index:100;border-bottom:1px solid var(--line);position:sticky;top:0}.base-header .button-bar{background:var(--navy)}.base-header .bar-inner{justify-content:space-between;align-items:center;width:1200px;max-width:100%;height:38px;margin:0 auto;padding:0 16px;display:flex}.base-header .group-left{align-items:center;gap:8px;display:flex}.base-header .dot-ok{background:#34d399;border-radius:50%;width:6px;height:6px;box-shadow:0 0 0 3px #34d3992e}.base-header .bar-text{color:#c7d7ea;font-size:12.5px}.base-header .group-right{align-items:center;gap:18px;display:flex}.base-header .group-right .bar-link{color:#c7d7ea;font-size:12.5px;transition:color .2s}.base-header .group-right .bar-link:hover{color:#fff}.base-header .group-right .bar-user{color:#fff;font-weight:600}.base-header .group-right .bar-logout{color:#9fb4cd}.base-header .group-right .bar-reg{color:#fff;background:var(--brand);border-radius:999px;padding:4px 14px;transition:background .2s}.base-header .group-right .bar-reg:hover{background:var(--brand-d);color:#fff}.base-header .bar-sep{background:#ffffff29;width:1px;height:12px}.base-header .header-main{background:var(--card);width:100%}.base-header .logo-search{align-items:center;gap:56px;width:1200px;max-width:100%;margin:0 auto;padding:18px 16px;display:flex}.base-header .logo-link{flex-shrink:0;align-items:center;gap:10px;display:flex}.base-header .logo-mark{color:#fff;background:linear-gradient(135deg,#3d7ef0,#2455c9);border-radius:11px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;font-size:18px;font-weight:800;display:flex;box-shadow:0 6px 16px -6px #2b6de599}.base-header .logo-txt{flex-direction:column;line-height:1.15;display:flex}.base-header .logo-txt b{color:var(--ink);letter-spacing:.5px;font-size:22px;font-weight:800}.base-header .logo-txt span{color:var(--ink-4);letter-spacing:2.4px;margin-top:3px;font-size:11.5px}.base-header .search{flex:1;max-width:620px}.base-header .search-input-wrap{background:#f4f7fc;border:1.5px solid #0000;border-radius:999px;align-items:center;padding:4px 4px 4px 18px;transition:all .2s;display:flex}.base-header .search-input-wrap:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px #2b6de51a}.base-header .search-icon{opacity:.55;margin-right:8px;font-size:13px}.base-header .search-input-wrap input{color:var(--ink);background:0 0;border:none;outline:none;flex:1;min-width:0;height:34px;font-size:14px}.base-header .search-input-wrap input::placeholder{color:var(--ink-4)}.base-header .search-input-wrap button{background:var(--brand);color:#fff;cursor:pointer;border:none;border-radius:999px;flex-shrink:0;padding:8px 26px;font-size:14px;font-weight:600;transition:background .2s}.base-header .search-input-wrap button:hover{background:var(--brand-d)}.base-header .nav-bar{border-top:1px solid var(--line);background:var(--card)}.base-header .nav-inner{width:1200px;max-width:100%;margin:0 auto;padding:0 16px}.base-header .nav-wrapper{align-items:center;gap:4px;display:flex}.base-header .nav-link{height:50px;color:var(--ink-2);align-items:center;padding:0 20px;font-size:15px;font-weight:500;transition:color .2s;display:flex;position:relative}.base-header .nav-link:hover{color:var(--brand)}.base-header .nav-link.on{color:var(--brand);font-weight:700}.base-header .nav-link.on:after{content:"";background:var(--brand);border-radius:2px 2px 0 0;height:2.5px;position:absolute;bottom:0;left:20px;right:20px}.base-header .nav-link.nav-ai{color:#7c3aed;font-weight:600}.base-header .nav-link.nav-ai:hover,.base-header .nav-link.nav-ai.on{color:#6d28d9}.base-header .nav-link.nav-ai.on:after{background:#7c3aed}.site-main{min-height:calc(100vh - 300px)}.base-footer{background:var(--navy);color:#93a9c2;margin-top:56px}.base-footer .footer-inner{width:1200px;max-width:100%;margin:0 auto;padding:0 16px}.base-footer .footer-cols{border-bottom:1px solid #ffffff17;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:44px 0 36px;display:grid}.base-footer .footer-about p{color:#8299b3;max-width:320px;margin:14px 0 0;font-size:13px;line-height:1.75}.base-footer .footer-brand{align-items:center;gap:10px;display:flex}.base-footer .footer-brand b{color:#fff;letter-spacing:.5px;font-size:17px}.base-footer .footer-col-title{color:#fff;letter-spacing:.3px;margin-bottom:14px;font-size:13.5px;font-weight:700}.base-footer .footer-col-links{flex-direction:column;gap:9px;display:flex}.base-footer .footer-col-links a{color:#93a9c2;font-size:13px;transition:color .2s}.base-footer .footer-col-links a:hover{color:#fff}.base-footer .icp-beian{text-align:center;color:#6b829e;padding:18px 0;font-size:12.5px}.container{width:1200px;max-width:100%;margin:0 auto;padding:24px 16px}.breadcrumb{color:var(--ink-4);padding:18px 0 8px;font-size:13px}.breadcrumb a{color:var(--ink-4);transition:color .2s}.breadcrumb a:hover{color:var(--brand)}.breadcrumb span{margin:0 6px}.courseClassificationList{border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh-1);margin-top:24px;padding:6px 20px 0 17px}.courseClassificationList .courseClassificationList_item{display:flex;position:relative}.courseClassificationList .courseClassificationList_item:after{content:"";z-index:2;border-bottom:1px dashed var(--line);height:1px;position:absolute;bottom:0;left:70px;right:0}.courseClassificationList .courseClassificationList_item:last-child:after{display:none}.courseClassificationList_item_title{width:70px;color:var(--ink-3);flex-shrink:0;font-size:14px;line-height:56px}.courseClassificationList_item_content{flex-wrap:wrap;flex:1;min-width:0;height:56px;padding:13px 0 0 30px;display:flex;overflow:hidden}.courseClassificationList_item_content.autoHeight{height:auto}.content_item{height:30px;color:var(--ink-2);cursor:pointer;white-space:nowrap;margin-bottom:13px;margin-right:28px;font-size:14px;line-height:30px;transition:color .2s}.content_item.on{color:var(--brand);font-weight:600}.content_item:hover{color:var(--brand)}.container_curriculum_list{margin-top:24px}.container_curriculum_list_con{grid-template-columns:repeat(4,1fr);gap:20px;display:grid}.container_curriculum_list_item{border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh-1);cursor:pointer;flex-direction:column;transition:all .28s cubic-bezier(.2,.8,.3,1);display:flex;overflow:hidden}.container_curriculum_list_item:hover{box-shadow:var(--sh-3);border-color:#0000;transform:translateY(-5px)}.container_curriculum_list_item_image{aspect-ratio:16/9;background:#eef2f8;position:relative;overflow:hidden}.container_curriculum_list_item_image img{object-fit:cover;width:100%;height:100%;transition:transform .5s cubic-bezier(.2,.8,.3,1)}.container_curriculum_list_item:hover .container_curriculum_list_item_image img{transform:scale(1.06)}.course{flex-direction:column;flex:1;padding:15px 17px 16px;display:flex}.course_title{text-overflow:ellipsis;color:var(--ink);text-align:left;-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:44px;margin-bottom:10px;font-size:15px;font-weight:700;line-height:1.45;transition:color .2s;display:-webkit-box;overflow:hidden}.container_curriculum_list_item:hover .course_title{color:var(--brand)}.course .label-group{flex:1;min-width:0;margin-bottom:8px;font-size:0}.course .label{border-radius:var(--r-sm);background:var(--brand-l);height:22px;color:var(--brand-d);padding:0 9px;font-size:12px;line-height:22px;display:inline-block}.course .label+.label{margin-left:6px}.course .card-meta{justify-content:space-between;align-items:center;margin:8px 0 0;display:flex}.course .card-cate{border-radius:var(--r-sm);background:var(--brand-l);color:var(--brand-d);text-overflow:ellipsis;white-space:nowrap;max-width:60%;padding:3px 10px;font-size:12px;font-weight:600;display:inline-block;overflow:hidden}.course .card-lessons{color:var(--ink-4);white-space:nowrap;font-size:12.5px}.course .card-divider{background:#f1f5f9;height:1px;margin:12px 0 0}.course .browse-money{color:var(--ink-4);justify-content:space-between;align-items:center;padding:11px 0 2px;font-size:13px;display:flex}.course .card-learn{color:var(--ink-4);font-size:12.5px}.course .money{color:var(--price);letter-spacing:-.3px;font-size:19px;font-weight:800}.course .money.free{color:var(--ok);font-size:15px;font-weight:700}.el-pagination{justify-content:center;gap:8px;margin:56px 0 80px;display:flex}.pag-btn{border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;background:var(--card);color:var(--ink-2);padding:7px 14px;font-size:14px;transition:all .2s}.pag-btn:hover{border-color:var(--brand);color:var(--brand)}.pag-btn.active{background:var(--brand);border-color:var(--brand);color:#fff}.pag-btn:disabled{opacity:.4;cursor:not-allowed}.search-bar{gap:10px;margin-bottom:20px;display:flex}.search-bar input{border:1px solid var(--line);border-radius:var(--r);outline:none;flex:1;max-width:360px;padding:9px 14px;font-size:14px;transition:border-color .2s,box-shadow .2s}.search-bar input:focus{border-color:var(--brand);box-shadow:0 0 0 3px #2b6de51a}.search-bar button{background:var(--brand);color:#fff;border-radius:var(--r);cursor:pointer;border:none;padding:9px 22px;font-size:14px;transition:background .2s}.search-bar button:hover{background:var(--brand-d)}.form-box{max-width:420px;margin:60px auto}.form-item{margin-bottom:18px}.form-item label{color:var(--ink-2);margin-bottom:6px;font-size:14px;display:block}.form-item input{border:1px solid var(--line);border-radius:var(--r);outline:none;width:100%;padding:10px 14px;font-size:14px;transition:border-color .2s,box-shadow .2s}.form-item input:focus{border-color:var(--brand);box-shadow:0 0 0 3px #2b6de51a}.form-submit{background:var(--brand);color:#fff;border-radius:var(--r);cursor:pointer;border:none;width:100%;margin-top:4px;padding:12px;font-size:15px;font-weight:600;transition:background .2s}.form-submit:hover{background:var(--brand-d)}.form-submit:disabled{opacity:.6;cursor:not-allowed}.form-tips{color:var(--ink-3);text-align:center;margin-top:14px;font-size:13px}.form-tips a{color:var(--brand)}.card{background:var(--card);border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--sh-1);padding:20px}.page-title{color:var(--ink);margin-bottom:20px;font-size:22px;font-weight:800}.section-title{color:var(--ink);letter-spacing:-.3px;justify-content:space-between;align-items:flex-end;padding-top:36px;padding-bottom:18px;font-size:22px;font-weight:800;display:flex}.section-title .more-link{color:var(--ink-3);align-items:center;gap:4px;font-size:13.5px;font-weight:500;transition:all .2s;display:inline-flex}.section-title .more-link:hover{color:var(--brand);gap:8px}.detail-wrap{grid-template-columns:1fr 320px;align-items:start;gap:24px;padding-bottom:60px;display:grid}.detail-main{background:var(--card);border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--sh-1);padding:28px}.detail-side{background:var(--card);border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--sh-1);padding:24px;position:sticky;top:190px}.detail-title{color:var(--ink);margin-bottom:16px;font-size:22px;font-weight:800}.detail-price{color:var(--ink-3);font-size:14px}.detail-price .money{color:var(--price);font-size:28px;font-weight:800}.detail-price .money-unit{font-size:16px}.detail-price .free{color:var(--price);font-size:26px;font-weight:800}.buy-btn,.download-btn{text-align:center;border-radius:var(--r);background:var(--brand);color:#fff;cursor:pointer;border:none;width:100%;padding:14px;font-size:15px;font-weight:600;transition:background .2s;display:block}.download-btn{margin-top:12px}.buy-btn{margin-top:20px}.buy-btn:hover,.download-btn:hover{background:var(--brand-d)}.detail-desc{color:var(--ink-2);font-size:15px;line-height:1.8}.detail-desc img,.detail-desc video,.detail-desc audio{border-radius:var(--r);max-width:100%}.empty-tip{text-align:center;color:var(--ink-4);padding:60px 0;font-size:15px}.loading{text-align:center;color:var(--ink-4);padding:60px 0}@media (width<=1200px){.base-header .bar-inner,.base-header .header-main>.logo-search,.base-header .nav-inner,.base-header .footer-inner,.container{width:100%}.base-header .search{margin-left:0}.container_curriculum_list_con{grid-template-columns:repeat(3,1fr)}.detail-wrap{grid-template-columns:1fr}.detail-side{position:static}}@media (width<=820px){.base-header .logo-search{flex-direction:column;align-items:flex-start;gap:12px}.base-header .search,.base-header .search-input-wrap{width:100%}.base-header .nav-link{padding:0 12px;font-size:14px}.base-header .nav-link:first-child{padding-left:0}.base-header .bar-inner .bar-text{display:none}.container_curriculum_list_con{grid-template-columns:repeat(2,1fr)}.base-footer .footer-cols{grid-template-columns:1fr 1fr}}@media (width<=520px){.container_curriculum_list_con{grid-template-columns:1fr}.base-header .logo-txt b{font-size:19px}.base-footer .footer-cols{grid-template-columns:1fr}}:root{--brand:#2b6de5;--brand-d:#1f55bd;--brand-l:#eaf1ff;--brand-grad:linear-gradient(135deg, #1d4ed8 0%, #3b82f6 55%, #60a5fa 100%);--ink:#0f172a;--ink-2:#334155;--ink-3:#64748b;--ink-4:#94a3b8;--line:#e8edf5;--bg:#f6f8fc;--card:#fff;--price:#f5222d;--ok:#0fa968;--navy:#0f2744;--r-sm:6px;--r:10px;--r-lg:14px;--r-xl:20px;--sh-1:0 1px 2px #1018280a;--sh-2:0 1px 3px #1018280f, 0 8px 24px -10px #1018281f;--sh-3:0 4px 8px #1018280f, 0 16px 40px -12px #1018282e;--f:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;font-family:var(--f);background-color:var(--bg);color:var(--ink-2);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-size:14px;line-height:1.6}#app{width:100%;min-height:100vh}a{color:inherit;text-decoration:none}ul,ol{list-style:none}img{max-width:100%;display:block}button,input,select,textarea{font-family:var(--f)}h1,h2,h3,h4,h5{font-weight:700}