:root{--learning-primary:var(--dash-accent);--learning-primary-muted:color-mix(in srgb,var(--dash-accent) 12%,transparent);--learning-bg:var(--dash-bg);--learning-card-bg:var(--dash-card);--learning-card-border:color-mix(in srgb,var(--dash-ink) 8%,transparent);--learning-sidebar-bg:var(--dash-bg);--learning-text-main:var(--dash-ink);--learning-text-muted:color-mix(in srgb,var(--dash-ink) 55%,transparent);--learning-text-faint:color-mix(in srgb,var(--dash-ink) 40%,transparent);--learning-nav-height:64px;--learning-font-sans:var(--font-vulkos-dm-sans),system-ui,sans-serif;--learning-font-mono:var(--font-vulkos-ibm-mono),ui-monospace,monospace}.learn-platform,.learn-platform .catalog-hero,.learn-platform .catalog-title,.learn-platform .lesson-content-container{font-family:var(--learning-font-sans)}.learning-container{max-width:1400px;margin:0 auto;padding:2rem}.catalog-hero{padding:4rem 0 3rem;border-bottom:1px solid var(--learning-card-border);margin-bottom:3rem}.catalog-title{font-size:2.25rem;font-weight:400;letter-spacing:-.02em;margin-bottom:.75rem;color:var(--learning-text-main)}.catalog-search-container{display:flex;gap:1rem;margin-top:2rem;max-width:600px;position:relative}.catalog-search-input{width:100%;padding:.875rem 1.25rem .875rem 3rem;border-radius:12px;background:var(--learning-card-bg);border:1px solid var(--learning-card-border);color:var(--learning-text-main);font-size:1rem;transition:all .2s ease;box-shadow:0 4px 6px -1px rgba(0,0,0,.05)}.catalog-search-input:focus{outline:none;border-color:var(--learning-primary);box-shadow:0 0 0 3px rgba(16,185,129,.1)}.catalog-search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--learning-text-muted);width:1.25rem;height:1.25rem}.catalog-filters{display:flex;gap:.75rem;margin-bottom:2.5rem;overflow-x:auto;padding-bottom:.5rem;scrollbar-width:none}.catalog-filters::-webkit-scrollbar{display:none}.filter-btn{padding:.5rem 1.25rem;border-radius:100px;background:var(--learning-card-bg);border:1px solid var(--learning-card-border);color:var(--learning-text-muted);font-size:.875rem;font-weight:500;white-space:nowrap;cursor:pointer;transition:all .2s ease}.filter-btn:hover{border-color:var(--learning-primary);color:var(--learning-primary)}.filter-btn.active{background:var(--learning-primary);border-color:var(--learning-primary);color:white}.premium-card{display:flex;flex-direction:column;background:var(--learning-card-bg);border:1px solid var(--learning-card-border);border-radius:12px;overflow:hidden;transition:all .2s ease;height:100%;position:relative;text-decoration:none}.premium-card:hover{border-color:color-mix(in srgb,var(--learning-text-main) 14%,transparent);background:color-mix(in srgb,var(--learning-text-main) 3%,transparent)}.card-thumbnail{aspect-ratio:16/9;background:rgba(0,0,0,.02);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.dark .card-thumbnail{background:rgba(255,255,255,.01)}.card-thumbnail svg{width:2rem;height:2rem;color:var(--learning-text-faint);transition:all .3s ease}.premium-card:hover .card-thumbnail svg{color:var(--learning-primary);opacity:.5}.card-content{padding:1.5rem;flex:1;display:flex;flex-direction:column}.card-tag{font-size:.65rem;text-transform:uppercase;letter-spacing:.05em;color:var(--learning-text-faint)}.card-tag,.card-title{font-weight:500;margin-bottom:.5rem}.card-title{font-size:1rem;color:var(--learning-text-main);line-height:1.4}.card-excerpt{font-size:.875rem;color:var(--learning-text-muted);line-height:1.6;margin-bottom:1.5rem;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-footer{margin-top:auto;justify-content:space-between;padding-top:1rem;border-top:1px solid var(--learning-card-border)}.card-footer,.card-meta-item{display:flex;align-items:center}.card-meta-item{gap:.375rem;font-size:.75rem;color:var(--learning-text-muted)}.card-progress-container{margin-top:1rem}.card-progress-bar{height:4px;background:var(--learning-card-border);border-radius:2px;overflow:hidden}.card-progress-fill{height:100%;background:var(--learning-primary);transition:width .3s ease}.overview-layout{display:grid;grid-template-columns:1fr 340px;gap:3rem;padding:3rem 0}.overview-main{min-width:0}.overview-sidebar{position:sticky;top:2rem;height:fit-content}.breadcrumb-nav{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--learning-text-muted);margin-bottom:2rem}.breadcrumb-nav a{color:var(--learning-text-muted);text-decoration:none;transition:color .15s ease}.breadcrumb-nav a:hover{color:var(--learning-primary)}.hero-section{margin-bottom:3rem}.hero-title{font-size:2.5rem;font-weight:800;color:var(--learning-text-main);margin-bottom:1rem;line-height:1.1}.hero-desc{font-size:1.125rem;color:var(--learning-text-muted);line-height:1.6;max-width:800px}.module-accordion{border:1px solid var(--learning-card-border);border-radius:16px;overflow:hidden;background:var(--learning-card-bg)}.module-item{border-bottom:1px solid var(--learning-card-border)}.module-item:last-child{border-bottom:none}.module-trigger{width:100%;padding:1.25rem 1.5rem;display:flex;align-items:center;justify-content:space-between;background:none;border:none;cursor:pointer;text-align:left;transition:background .2s ease}.module-trigger:hover{background:rgba(0,0,0,.02)}.dark .module-trigger:hover{background:rgba(255,255,255,.02)}.module-trigger-info{display:flex;align-items:center;gap:1rem}.module-index{font-size:.75rem;font-weight:700;color:var(--learning-text-muted);width:1.5rem}.module-trigger-title{font-size:1.1rem;font-weight:600;color:var(--learning-text-main)}.module-content{padding:0 0 1rem}.lesson-link{display:flex;align-items:center;gap:1rem;padding:.875rem 1.5rem .875rem 3.5rem;text-decoration:none;color:var(--learning-text-main);font-size:.95rem;transition:all .2s ease}.lesson-link:hover{background:rgba(16,185,129,.05);color:var(--learning-primary)}.lesson-duration-badge{margin-left:auto;font-size:.75rem;color:var(--learning-text-muted)}.stat-card{background:var(--learning-card-bg);border:1px solid var(--learning-card-border);border-radius:20px;padding:1.75rem;box-shadow:0 4px 12px rgba(0,0,0,.03)}.stat-group{margin-bottom:2rem}.stat-label{font-size:.75rem;font-weight:600;color:var(--learning-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.stat-value-large{font-size:1.75rem;font-weight:800;color:var(--learning-text-main)}.cta-button-primary{display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:1rem;background:var(--learning-primary);color:white;border:none;border-radius:12px;font-weight:600;cursor:pointer;text-decoration:none;transition:all .2s ease}.cta-button-primary:hover{background:var(--learning-primary-hover);transform:translateY(-1px)}.lesson-layout{display:grid;grid-template-columns:320px 1fr;height:calc(100vh - var(--learning-nav-height));overflow:hidden}.lesson-sidebar{background:var(--learning-sidebar-bg);border-right:1px solid var(--learning-card-border);overflow-y:auto;padding:1.5rem 0}.lesson-main{overflow-y:auto;padding:3rem 4rem;background:var(--learning-bg)}.lesson-content-container{max-width:800px;margin:0 auto}.lesson-nav-footer{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--learning-card-border);display:flex;justify-content:space-between}.nav-link-btn{display:flex;flex-direction:column;text-decoration:none;padding:1rem 1.5rem;border-radius:12px;border:1px solid var(--learning-card-border);min-width:200px;transition:all .2s ease}.nav-link-btn:hover{border-color:var(--learning-primary);background:rgba(16,185,129,.05)}.nav-link-label{font-size:.7rem;font-weight:600;color:var(--learning-text-muted);text-transform:uppercase;margin-bottom:.25rem}.nav-link-title{font-size:1rem;font-weight:600;color:var(--learning-text-main)}@media (max-width:1024px){.overview-layout{grid-template-columns:1fr}.overview-sidebar{position:static}}@media (max-width:768px){.lesson-layout{grid-template-columns:1fr}.lesson-sidebar{display:none}.lesson-main{padding:2rem 1.5rem}}.prose .code-block code,.prose .code-block code span,.prose .syntax-highlighter-wrapper code,.prose .syntax-highlighter-wrapper code span{background-color:transparent!important;color:inherit!important;padding:0!important;border-radius:0!important;font-weight:inherit!important;box-shadow:none!important;text-shadow:none!important;white-space:pre!important;font-size:inherit!important}.prose .code-block code:after,.prose .code-block code:before,.prose .syntax-highlighter-wrapper code:after,.prose .syntax-highlighter-wrapper code:before{content:none!important;display:none!important}.prose .code-block,.prose .syntax-highlighter-wrapper{margin:1.5rem 0!important;box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06)}.learning-code-block pre{background-color:#f4f6f4!important;color:#0e100e!important}.learning-code-block code,.prose .learning-code-block code,.prose .learning-code-block pre{background-color:transparent!important;color:inherit!important}.prose .learning-code-block pre{background-color:#f4f6f4!important;color:#0e100e!important}.course-structure-fixed details>summary{transition:transform .16s ease,border-color .16s ease,background .16s ease}.course-structure-fixed details[open]>summary{transform:translateY(-1px);border-color:rgba(16,185,129,.35);background:rgba(16,185,129,.06)}.course-structure-chevron{transition:transform .18s ease}.course-structure-fixed details[open] .course-structure-chevron{transform:rotate(90deg)}.course-structure-panel{opacity:0;transform:translateY(-6px);transition:opacity .16s ease,transform .16s ease}.course-structure-fixed details[open] .course-structure-panel{opacity:1;transform:translateY(0)}