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1rem}.file-tabs button.active{background:var(--lime);color:var(--ink)}.preview-pane{border-top:1px solid var(--line);background:#fff;grid-column:1/-1}.preview-head{background:var(--panel);color:#fff;justify-content:space-between;align-items:center;min-height:42px;padding:.6rem 1rem;display:flex}.preview-pane iframe{background:#fff;border:0;width:100%;height:390px;display:block}.quiz-panel{border:1px solid var(--dark-line);background:#fff;margin-top:2.5rem;padding:clamp(1rem,3vw,2rem)}.quiz-panel fieldset{border:1px solid var(--dark-line);margin:1.5rem 0;padding:1rem}.quiz-panel legend{padding:0 .5rem;font-weight:800}.quiz-panel label{align-items:start;gap:.7rem;margin-top:.8rem;display:flex}.quiz-correct{color:#3e6500!important}.quiz-incorrect{color:#a02c24!important}.course-progress-panel{border:1px solid var(--line);background:var(--panel);grid-template-columns:auto minmax(180px,1fr) auto;align-items:center;gap:1rem;margin-top:2rem;padding:1rem;display:grid}.course-progress-panel strong{font:400 2.5rem var(--font-anton);color:var(--lime-soft);display:block}.course-outline-section{padding-bottom:0}.curriculum-module{border:1px solid var(--line);background:var(--panel);margin-bottom:3rem}.module-heading{border-bottom:1px solid var(--line);grid-template-columns:90px 1fr;gap:1rem;padding:1.5rem;display:grid}.module-heading .number{font:400 4rem var(--font-anton);color:var(--lime)}.module-heading h2{text-align:left;margin:.3rem 0;font-size:clamp(2.5rem,5vw,4.5rem)}.module-heading p:last-child{color:var(--muted)}.activity-list{display:grid}.activity-row{border-bottom:1px solid #ffffff14;grid-template-columns:46px minmax(0,1fr) auto;align-items:center;gap:1rem;padding:1rem;display:grid}.activity-row:last-child{border-bottom:0}.activity-row:hover{background:var(--panel-2)}.activity-row small,.activity-row strong,.activity-row em{display:block}.activity-row small{color:var(--lime);letter-spacing:.08em;text-transform:uppercase;font-size:.6rem;font-weight:800}.activity-row em{color:var(--muted);margin-top:.25rem;font-size:.78rem;font-style:normal}.activity-status{width:36px;height:36px;color:var(--muted);font:800 .7rem var(--font-mono);border:1px solid #ffffff38;border-radius:50%;place-items:center;display:inline-grid}.activity-status.complete{border-color:var(--lime);background:var(--lime);color:var(--ink)}.recent-list{border:1px solid var(--line)}.recent-list a{border-bottom:1px solid var(--line);background:var(--panel);grid-template-columns:44px 1fr auto;align-items:center;gap:1rem;padding:1rem;display:grid}.recent-list a:last-child{border-bottom:0}.recent-list small{color:var(--muted);text-transform:capitalize;margin-top:.2rem;display:block}.recent-list time{color:var(--muted);font-size:.72rem}.project-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:3rem;display:grid}.project-card{border:1px solid var(--line);background:var(--panel);flex-direction:column;min-height:420px;padding:1.4rem;display:flex}.project-card>div:first-child{justify-content:space-between;align-items:center;display:flex}.project-card h2{font:400 clamp(2rem,4vw,3.5rem)/.95 var(--font-anton);text-transform:uppercase;margin:2rem 0 .5rem}.project-card p,.project-card li{color:var(--muted);line-height:1.6}.project-card .button{align-self:flex-start;margin-top:auto}.project-list{gap:.7rem;margin:1.5rem 0;padding:0;list-style:none;display:grid}.project-list li{border:1px solid var(--line);background:var(--panel);padding:1rem}@media (max-width:900px){.nav-links a:not(.button){display:none}.hero-grid,.section-head,.dashboard-grid,.challenge-grid,.workspace,.course-progress-panel,.card-grid{grid-template-columns:1fr}.lesson-shell{width:min(100% - 1rem,900px);display:block}.outline{max-height:240px;margin-bottom:.5rem;position:static}.challenge-instructions,.workspace-brief{border-right:0;border-bottom:1px solid var(--line)}.preview-pane{grid-column:auto}.project-grid{grid-template-columns:1fr}}@media (max-width:600px){.shell{width:min(100% - 1.2rem,1380px)}.hero h1{font-size:clamp(4.3rem,22vw,7rem)}.stats,.metric-grid{grid-template-columns:1fr}.stats div{border-right:0;border-bottom:1px solid var(--line)}.footer-inner,.lesson-nav{flex-direction:column}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}