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body.style-for-dark .ldna-course-card,body.style-for-dark .ldna-course-hero,body.style-for-dark .ldna-detail-main,body.style-for-dark .ldna-purchase-card,body.style-for-dark .ldna-empty{border-color:#3a3a3a;background:#2a2a2a;box-shadow:none}
body.style-for-dark .ldna-course-card:hover{border-color:#526b8f;box-shadow:0 8px 24px rgba(0,0,0,.22)}
body.style-for-dark .ldna-card-cover,body.style-for-dark .ldna-hero-cover{border-color:#3a3a3a;background:#1e1e1e}
body.style-for-dark .ldna-domain,body.style-for-dark .ldna-term-list a,body.style-for-dark .ldna-section-index{background:#172b48;color:#70aaff}
body.style-for-dark .ldna-outline,body.style-for-dark .ldna-outline p{border-color:#3a3a3a}
body.style-for-dark .ldna-learning{background:#24272b}
.ldna-page,.ldna-course-card,.ldna-course-hero,.ldna-detail-main,.ldna-purchase-card,.ldna-search input{transition:background-color .2s,color .2s,border-color .2s}

/* Restored original course-detail composition. */
.ldna-course-shell{max-width:1200px}.ldna-original-course-card{overflow:hidden;border:1px solid #e5e5e5;border-radius:4px;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.04)}.ldna-original-cover{width:100%;aspect-ratio:16/7;overflow:hidden;background:#eee}.ldna-original-cover>img{display:block;width:100%;height:100%;object-fit:cover}.ldna-original-summary{padding:28px 32px}.ldna-original-summary h1{margin:0;color:#1a1a1a;font-size:32px;line-height:1.3}.ldna-original-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;padding-bottom:22px;border-bottom:1px solid #eee}.ldna-original-meta span{padding:5px 9px;border-radius:3px;background:#f4f4f4;color:#777;font-size:12px}.ldna-original-meta b{color:#1a1a1a}.ldna-original-purchase{display:flex;align-items:end;justify-content:space-between;gap:24px;padding-top:22px}.ldna-original-purchase>div:first-child{display:flex;flex-direction:column}.ldna-original-purchase small{color:#999}.ldna-original-purchase strong{margin-top:4px;color:#0069ff;font-size:30px;line-height:1.2}.ldna-original-purchase strong i{margin-right:3px;font-size:17px;font-style:normal}.ldna-original-purchase .ldna-purchase-action{min-width:180px;margin:0}
.ldna-course-tabs{margin-top:24px;border:1px solid #e5e5e5;border-radius:4px;background:#fff}.ldna-tab-list{display:flex;gap:28px;padding:0 28px;border-bottom:1px solid #e5e5e5}.ldna-tab-list button{position:relative;padding:20px 0 17px;border:0;background:transparent;color:#666;font-size:16px;font-weight:700;cursor:pointer}.ldna-tab-list button:after{content:"";position:absolute;right:0;bottom:-1px;left:0;height:3px;border-radius:3px 3px 0 0;background:transparent}.ldna-tab-list button.is-active{color:#0069ff}.ldna-tab-list button.is-active:after{background:#0069ff}.ldna-tab-list small{display:inline-flex;min-width:20px;height:20px;align-items:center;justify-content:center;margin-left:4px;border-radius:10px;background:#f0f0f0;color:#777;font-size:11px}.ldna-tab-panel{padding:28px}.ldna-tab-panel[hidden]{display:none}.ldna-tab-panel>section{padding-top:26px;border-top:1px solid #eee}.ldna-tab-panel>section:first-child{padding-top:0;border-top:0}.ldna-tab-panel>section+section{margin-top:26px}.ldna-tab-panel h2{margin:0 0 14px;color:#1a1a1a;font-size:20px}.ldna-tab-panel p{color:#666;line-height:1.9}
.ldna-lesson-list{border-top:1px solid #eee}.ldna-lesson-row{display:grid;grid-template-columns:90px 28px minmax(0,1fr) 60px 74px 18px;gap:14px;align-items:center;min-height:76px;padding:0 14px;border-bottom:1px solid #eee;color:#1a1a1a;text-decoration:none!important}.ldna-lesson-row:hover{background:#fafcff}.ldna-lesson-number,.ldna-lesson-type{color:#888}.ldna-lesson-icon{color:#789}.ldna-lesson-row strong{font-size:15px}.ldna-lesson-status{padding:5px 8px;border-radius:3px;background:#f4f4f4;color:#777;text-align:center}.ldna-lesson-row.is-unlocked .ldna-lesson-status{background:#edf5ff;color:#0069ff}.ldna-lesson-chevron{color:#999;font-size:24px}.ldna-empty-catalog{margin:0;padding:20px;color:#888;text-align:center}.ldna-learning-content{margin-top:24px;padding:30px;border:1px solid #e5e5e5;border-radius:4px;background:#fff}.ldna-learning-content h2{margin:6px 0 20px;color:#1a1a1a}
body.style-for-dark .ldna-original-course-card,body.style-for-dark .ldna-course-tabs,body.style-for-dark .ldna-learning-content{border-color:#3a3a3a;background:#2a2a2a;box-shadow:none}body.style-for-dark .ldna-original-summary h1,body.style-for-dark .ldna-original-meta b,body.style-for-dark .ldna-tab-panel h2,body.style-for-dark .ldna-lesson-row,body.style-for-dark .ldna-learning-content h2{color:#fafafa}body.style-for-dark .ldna-original-meta,body.style-for-dark .ldna-tab-list,body.style-for-dark .ldna-tab-panel>section,body.style-for-dark .ldna-lesson-list,body.style-for-dark .ldna-lesson-row{border-color:#3a3a3a}body.style-for-dark .ldna-original-meta span,body.style-for-dark .ldna-tab-list small,body.style-for-dark .ldna-lesson-status{background:#222;color:#aaa}body.style-for-dark .ldna-tab-list button{color:#aaa}body.style-for-dark .ldna-tab-list button.is-active{color:#70aaff}body.style-for-dark .ldna-tab-list button.is-active:after{background:#0069ff}body.style-for-dark .ldna-tab-panel p,body.style-for-dark .ldna-lesson-number,body.style-for-dark .ldna-lesson-type{color:#aaa}body.style-for-dark .ldna-lesson-row:hover{background:#24272b}body.style-for-dark .ldna-lesson-row.is-unlocked .ldna-lesson-status{background:#172b48;color:#70aaff}
@media(max-width:700px){.ldna-original-cover{aspect-ratio:16/9}.ldna-original-summary{padding:22px 20px}.ldna-original-summary h1{font-size:26px}.ldna-original-purchase{align-items:stretch;flex-direction:column}.ldna-original-purchase .ldna-purchase-action{width:100%}.ldna-tab-list{padding:0 20px}.ldna-tab-panel{padding:20px}.ldna-lesson-row{grid-template-columns:62px 22px minmax(0,1fr) 18px;gap:8px;min-height:68px;padding:0 6px}.ldna-lesson-type,.ldna-lesson-status{display:none}}

.ldna-learning-layout{display:grid;grid-template-columns:minmax(0,826px) 340px;gap:34px;align-items:start}.ldna-learning-main{min-width:0}.ldna-course-sidebar{position:sticky;top:96px;display:grid;gap:16px;margin-top:24px}.ldna-sidebar-card{padding:22px;border:1px solid #e5e5e5;border-radius:4px;background:#fff}.ldna-sidebar-card h2{margin:0 0 16px;color:#1a1a1a;font-size:18px}.ldna-sidebar-card dl{margin:0}.ldna-sidebar-card dl>div{display:flex;justify-content:space-between;gap:20px;padding:11px 0;border-top:1px solid #eee}.ldna-sidebar-card dl>div:first-child{padding-top:0;border-top:0}.ldna-sidebar-card dt{color:#888}.ldna-sidebar-card dd{margin:0;color:#1a1a1a;font-weight:700;text-align:right}.ldna-sidebar-creator>div{display:flex;align-items:center;gap:12px}.ldna-sidebar-creator img{border-radius:50%}.ldna-sidebar-creator span{display:flex;flex-direction:column}.ldna-sidebar-creator small{margin-top:2px;color:#999}.ldna-sidebar-creator p{margin:15px 0 0;color:#777;font-size:13px;line-height:1.75}.ldna-sidebar-back{display:flex;min-height:42px;align-items:center;justify-content:center;border:1px solid #0069ff;border-radius:3px;background:#fff;color:#0069ff;font-weight:700;text-decoration:none!important}.ldna-sidebar-back:hover{background:#0069ff;color:#fff}
body.style-for-dark .ldna-sidebar-card{border-color:#3a3a3a;background:#2a2a2a}body.style-for-dark .ldna-sidebar-card h2,body.style-for-dark .ldna-sidebar-card dd{color:#fafafa}body.style-for-dark .ldna-sidebar-card dl>div{border-color:#3a3a3a}body.style-for-dark .ldna-sidebar-card dt,body.style-for-dark .ldna-sidebar-creator p{color:#aaa}body.style-for-dark .ldna-sidebar-back{background:#2a2a2a;color:#70aaff}body.style-for-dark .ldna-sidebar-back:hover{background:#0069ff;color:#fff}
@media(max-width:980px){.ldna-learning-layout{grid-template-columns:1fr}.ldna-course-sidebar{position:static;grid-template-columns:1fr 1fr;margin-top:0}.ldna-sidebar-back{grid-column:1/-1}}
@media(max-width:620px){.ldna-course-sidebar{grid-template-columns:1fr}}

/* Exact JustNews typography and component rhythm measured on liandu24.com. */
.ldna-page{font-size:14px;line-height:20px}.ldna-page-heading h1{font-size:24px;font-weight:600;line-height:32px;letter-spacing:0}.ldna-page-heading p{margin-top:8px;font-size:14px;line-height:20px}.ldna-eyebrow{font-size:12px;line-height:18px;letter-spacing:.06em}.ldna-filter-bar{margin-top:24px;padding:14px 0}.ldna-filter-bar+.ldna-filter-bar{margin-top:0}.ldna-filter-bar>strong,.ldna-chip{font-size:14px;line-height:20px}.ldna-chip{padding:6px 12px;border-radius:3px}.ldna-tools{margin-top:20px}.ldna-search input[type=search]{height:40px;border-radius:3px;font-size:14px}.ldna-search button{top:4px;right:4px;height:32px;padding:0 15px;font-size:12px;line-height:14px}.ldna-search-icon{top:12px}.ldna-quick-filters a{padding:6px 10px;font-size:12px;line-height:14px}
.ldna-course-card{border-radius:12px}.ldna-card-body{padding:16px}.ldna-card-body h2{font-size:16px;font-weight:600;line-height:24px;letter-spacing:0}.ldna-card-excerpt{font-size:14px;line-height:20px}.ldna-card-meta,.ldna-card-footer{font-size:12px;line-height:18px}.ldna-domain{border-radius:3px}.ldna-pagination .page-numbers{height:32px;min-width:32px;padding:0 10px;font-size:12px}
.ldna-original-course-card,.ldna-course-tabs,.ldna-learning-content,.ldna-sidebar-card{border-radius:12px}.ldna-original-summary{padding:24px}.ldna-original-summary h1{font-size:24px;font-weight:600;line-height:32px;letter-spacing:0}.ldna-lead{margin-top:10px;font-size:14px;line-height:22px}.ldna-original-meta{margin-top:16px;padding-bottom:18px}.ldna-original-meta span{font-size:12px;line-height:18px}.ldna-original-purchase{padding-top:18px}.ldna-original-purchase strong{font-size:24px;line-height:30px}.ldna-tab-list button{padding:18px 0 15px;font-size:16px;line-height:22px}.ldna-tab-panel{padding:24px}.ldna-tab-panel h2,.ldna-learning-content h2,.ldna-sidebar-card h2{font-size:18px;font-weight:500;line-height:26px}.ldna-tab-panel p,.ldna-rich-content{font-size:14px;line-height:24px}.ldna-lesson-row{min-height:68px;font-size:14px;line-height:20px}.ldna-lesson-row strong{font-size:14px;font-weight:500;line-height:20px}.ldna-lesson-status{font-size:12px;line-height:18px}.ldna-sidebar-card{padding:20px}.ldna-sidebar-card dt,.ldna-sidebar-card dd,.ldna-sidebar-creator p{font-size:14px;line-height:20px}.ldna-sidebar-back{min-height:34px;border-radius:3px;font-size:12px;line-height:14px}
@media(max-width:700px){.ldna-page-heading h1,.ldna-original-summary h1{font-size:22px;line-height:30px}.ldna-original-summary,.ldna-tab-panel,.ldna-learning-content{padding:20px}}