:root{font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;color:#111b30;background:#fff;font-synthesis:none;--red:#ed2729;--blue:#0754e8;--line:#e5e9f0;--muted:#788398}*{box-sizing:border-box}body{margin:0;min-width:1100px}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer}img{max-width:100%;object-fit:cover}p{line-height:1.7}h1,h2,h3,p{margin-top:0}h1{font-size:30px;line-height:1.45}h2{font-size:23px;line-height:1.4}h3{font-size:16px}small{font-size:12px;color:var(--muted)}.site-header{height:86px;display:flex;align-items:center;padding:0 32px;gap:32px;border-bottom:1px solid var(--line)}.brand{display:flex;flex-direction:column;flex-shrink:0;width:205px;gap:5px}.brand img{width:200px;object-fit:contain}.brand small{font-size:13px;letter-spacing:.6px}.site-header nav{display:flex;flex:1;justify-content:space-between;height:100%;gap:16px}.site-header nav a{font-size:14px;display:flex;align-items:center;white-space:nowrap;position:relative}.site-header nav a.active{color:var(--red);font-weight:600}.site-header nav a.active:after{position:absolute;bottom:0;left:0;right:0;height:2px;content:"";background:var(--red)}.page{max-width:1440px;margin:0 auto;padding:20px;min-height:620px}.button{border:1px solid #d6dce6;border-radius:6px;background:white;color:#14213b;display:inline-flex;gap:8px;justify-content:center;align-items:center;min-height:40px;padding:9px 18px;line-height:1.4;font-size:14px}.button:hover{border-color:var(--red);color:var(--red)}.button.primary{background:var(--red);border-color:var(--red);color:white}.button.primary:hover{background:#d81c25}.button.compact{padding:7px 16px;min-height:38px;white-space:nowrap}.button.large{padding:12px 28px;font-size:18px}.button.full{width:100%}.button:disabled{opacity:.55;cursor:not-allowed}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.section-heading h2{margin:0}.section-heading>a{font-size:12px;color:#778398;white-space:nowrap}.hero-grid{display:grid;grid-template-columns:1.85fr 1.05fr .85fr;gap:16px;min-height:380px}.hero{position:relative;border-radius:12px;overflow:hidden}.hero>img{width:100%;height:380px;display:block}.latest{padding:20px 24px}.latest h2{font-size:24px}.latest .section-heading{margin-bottom:10px}.news-line{display:flex;align-items:center;gap:8px;font-size:13px;min-height:39px;border-bottom:1px dashed var(--line)}.news-line span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.news-line time{font-size:10px;color:#8290a4}.news-line:hover{color:var(--red)}.event-poster{border-radius:12px;overflow:hidden}.event-poster img{width:100%;height:380px}.platform-section{margin-top:24px}.platform-section>h2{margin:0 10px 16px}.platform-row{display:grid;grid-template-columns:186px repeat(5,minmax(0,1fr));margin:16px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;min-height:108px}.platform-kind,.platform-item{display:flex;align-items:center;gap:18px;padding:20px 24px;border-right:1px solid var(--line)}.platform-kind{color:#074beb;background:#f4f6ff;font-size:20px}.platform-kind i{font-size:38px}.platform-kind.seller{color:#029b6d;background:#effaf5}.platform-kind small{display:block;color:inherit;font-size:16px}.platform-item{gap:16px;font-size:17px}.platform-item img{width:48px;height:48px;object-fit:contain;flex-shrink:0}.platform-item small{display:block;margin-top:10px;font-size:12px}.platform-item:last-child{border:0}.holidays{margin-top:16px;padding:16px 20px}.holidays .section-heading{margin-bottom:14px}.empty-inline{color:var(--muted);padding:10px 0}.home-bottom{display:grid;grid-template-columns:1.35fr 1fr;gap:16px;margin-top:18px}.home-bottom>.panel{padding:16px}.service-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.service-card{text-align:center;border:1px solid #e9edf5;border-radius:10px;padding:10px 5px;background:#f5f7ff;min-height:210px}.service-card:nth-child(2){background:#f0f9f5}.service-card:nth-child(3){background:#fffaf2}.service-card:nth-child(4){background:#faf5ff}.service-card>span{width:60px;height:60px;margin:0 auto 10px;display:grid;place-items:center;background:#e5edff;color:#1353e7;border-radius:50%;font-size:26px}.service-card h3{line-height:1.65;margin-bottom:8px}.service-card p{font-size:12px;color:#788398;margin-bottom:0}.home-courses{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.home-courses img{height:210px;width:100%;border-radius:8px}.site-footer{border-top:1px solid var(--line);margin-top:0;padding:36px 0 18px}.footer-grid,.footer-bottom{max-width:1280px;margin:auto;display:grid;grid-template-columns:1fr 1.6fr 1.6fr 1fr;gap:36px}.footer-logo{width:190px;object-fit:contain;margin-bottom:12px}.footer-grid h3{font-size:14px;margin:5px 0 20px}.footer-grid p{font-size:13px;margin:0 0 12px}.footer-grid small{display:block;line-height:1.8;margin-top:10px}.qr-group{display:flex;gap:18px;align-items:flex-start}.qr-group>img{width:112px;height:112px;object-fit:contain;border:1px solid var(--line);border-radius:4px;padding:4px}.qr-group p{font-size:12px;color:#6d7890}.qr-group a{font-size:12px;color:#064bc8}.footer-bottom{display:flex;justify-content:space-between;margin-top:48px;padding-top:20px;border-top:1px solid var(--line);font-size:11px;color:#8590a3}.footer-bottom a{margin-right:20px}.page-heading{display:flex;align-items:center;justify-content:space-between;padding:20px 0 24px;gap:30px}.page-heading h1{margin-bottom:6px}.page-heading p{font-size:14px;color:var(--muted);margin-bottom:0}.search{display:flex;gap:8px}.search input{min-width:290px}.search input,input,select,textarea{border:1px solid #dce2eb;border-radius:6px;padding:11px 12px;color:#17233a;background:#fff}textarea{resize:none}.filter-tabs{display:flex;gap:28px;align-items:center;border-bottom:1px solid var(--line);margin-bottom:24px;min-height:46px}.filter-tabs a,.filter-tabs button{padding:12px 4px;border:0;border-bottom:2px solid transparent;background:none;color:#667085;white-space:nowrap}.filter-tabs .active{color:var(--red);border-bottom-color:var(--red)}.article-row{display:flex;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}.article-row:last-child{border:0}.article-row>a{width:240px;flex-shrink:0}.article-row img{width:240px;height:150px;border-radius:8px}.article-row h2{font-size:22px;margin:14px 0 12px}.article-row p{font-size:14px;color:#677389}.tag{display:inline-block;color:#5a6d90;background:#f1f5fb;font-size:12px;padding:5px 9px;border-radius:4px}.pagination{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding:24px 0;color:var(--muted);font-size:13px}.directory-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:24px}.directory-sidebar{border:1px solid var(--line);border-radius:10px;padding:20px 14px;align-self:start;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}.directory-sidebar h3{padding:0 12px}.directory-sidebar a{display:block;padding:11px 12px;font-size:14px;border-radius:6px}.directory-sidebar a:hover,.directory-sidebar a.active{background:#fff0f2;color:var(--red)}.resource-section{margin-bottom:20px;scroll-margin-top:20px;padding:22px}.resource-section h2{font-size:20px}.resource-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.resource-card{position:relative;border:1px solid var(--line);border-radius:8px;padding:16px;min-height:112px}.resource-card a{display:block;padding-right:14px}.resource-card img{width:30px;height:30px;float:left;margin:0 10px 10px 0}.resource-card h3{margin:0 0 12px;font-size:14px;line-height:1.7}.resource-card p{font-size:12px;color:var(--muted);clear:both;margin:0}.favorite-icon{position:absolute;right:8px;top:10px;background:none;border:0;color:#8a94a6;padding:4px}.favorite-icon.active{color:var(--red)}.resource-card[hidden]{display:none}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-content:start}.course-card{padding:0;overflow:hidden}.course-card>a{display:block;background:#f2f5fb}.course-card>a>img{width:100%;height:230px;object-fit:cover;object-position:top}.course-card>div{padding:20px}.course-card h2{font-size:18px;margin:14px 0 10px}.course-card p{font-size:13px;color:var(--muted)}.back-link{display:inline-block;font-size:14px;color:#69758c;margin:8px 0 20px}.detail{max-width:1160px;margin:0 auto;padding:40px}.detail-heading{display:flex;gap:40px;justify-content:space-between}.detail-heading h1{margin:20px 0 16px}.detail-heading p{color:#69758c}.detail-cover{width:260px;height:240px;object-fit:contain;border-radius:8px}.engagement{display:flex;align-items:center;gap:12px;margin:24px 0}.engagement .active{color:var(--red);border-color:var(--red);background:#fff5f5}.article-body{font-size:16px;line-height:1.9;margin:30px 0}.article-body p{margin-bottom:24px}.access-box{padding:22px;background:#f6f8fc;border:1px solid var(--line);border-radius:8px;margin-top:24px;display:flex;align-items:center;gap:20px}.access-box p{margin:0}.outline{padding-left:24px;line-height:2.4}.empty{text-align:center;padding:80px 32px;min-height:300px}.empty p{color:var(--muted)}.login-page{display:grid;grid-template-columns:1.15fr 1fr;max-width:1060px;margin:52px auto 70px;min-height:530px;border:1px solid var(--line);border-radius:16px;overflow:hidden}.login-art{position:relative;min-height:540px}.login-art>img{height:100%;width:100%;position:absolute;object-fit:cover}.login-art>div{position:absolute;left:30px;right:30px;bottom:30px;color:white;text-shadow:0 2px 4px #0008}.login-art h1{font-size:30px}.login-card{padding:40px 44px}.login-card h1{font-size:25px}.login-card>p{color:var(--muted);font-size:13px}.login-card label,.profile-form label{display:block;font-size:14px;margin:24px 0 8px}.login-card label>input{display:block;width:100%;margin-top:10px}.code-row{display:flex;gap:10px;margin-top:10px}.code-row input{min-width:0;flex:1}.code-row button{white-space:nowrap}.login-card label.checkbox{display:flex;align-items:center;gap:5px;font-size:11px;white-space:nowrap;margin-bottom:22px}.login-card label.checkbox input{display:inline;width:auto;margin:0 4px 0 0}.checkbox a{color:var(--blue)}.login-extra{border-top:1px solid var(--line);margin-top:24px;padding-top:24px;text-align:center}.login-extra p{font-size:14px;margin-bottom:8px}.form-error{color:var(--red);font-size:13px;min-height:20px}.local-hint{color:#895c05;background:#fff7df;padding:8px 12px;font-size:12px}.account-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.account-card{display:flex;align-items:center;gap:20px;min-height:130px}.account-card i{font-size:30px;color:var(--blue)}.account-card h2{font-size:20px;margin:0}.profile-form{margin-top:24px}.profile-form form{display:flex;align-items:flex-end;gap:20px}.profile-form label{margin:0;display:flex;flex-direction:column;gap:10px}.favorite-row{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line)}.favorite-row:last-child{border:0}@media(min-width:1700px){.site-header{padding-left:max(32px,calc((100vw - 1440px)/2));padding-right:max(32px,calc((100vw - 1440px)/2))}}@media(max-width:1250px){.site-header{gap:20px;padding:0 20px}.site-header nav{gap:12px}.site-header nav a{font-size:12px}.brand{width:185px}.brand img{width:180px}.platform-item{padding:18px 14px;gap:10px;font-size:14px}.platform-row{grid-template-columns:170px repeat(5,minmax(0,1fr))}.resource-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-grid,.footer-bottom{margin-left:30px;margin-right:30px;gap:22px}.qr-group{gap:10px}.qr-group>img{width:90px;height:90px}}
/* Configured resource filters may contain many or long category names. */
.resource-section .subcategories{flex-wrap:wrap;gap:6px 20px}.resource-section .subcategories>button{max-width:100%;white-space:normal;overflow-wrap:anywhere;text-align:left}

/* Configured platform names can be long and numerous. */
.filter-tabs.platform-filters{flex-wrap:wrap;gap:0 28px}.filter-tabs.platform-filters a{max-width:100%;white-space:normal;overflow-wrap:anywhere}.directory-sidebar[aria-label="课程平台筛选"] a{overflow-wrap:anywhere}

.article-cover-placeholder{display:flex;align-items:center;justify-content:center;width:240px;height:150px;border-radius:8px;background:#f4f6fa;color:#8b96a7;font-size:36px}