:root{--ll-bg:#fff;--ll-surface:#fff;--ll-text:#0f172a;--ll-text-secondary:#475569;--ll-text-muted:#64748b;--ll-blue:#0b74ff;--ll-blue-dark:#0256c9;--ll-blue-light:#eff6ff;--ll-blue-tint:#0b74ff14;--ll-border:#e2e8f0;--ll-border-hover:#cbd5e1;--ll-shadow-xs:0 1px 3px #0f172a0a;--ll-shadow-sm:0 2px 8px #0f172a0f;--ll-shadow-md:0 4px 20px #0f172a14;--ll-shadow-blue:0 8px 28px #0b74ff2e;--ll-ease:cubic-bezier(.22,1,.36,1)}.learn-later-root-layout{background-color:#fff;min-height:100vh}.ll-page-container{background:var(--ll-bg);color:var(--ll-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.ll-main{box-sizing:border-box;width:90%;max-width:1200px;margin:0 auto 56px;padding:24px 0 0}@media (max-width:768px){.ll-main{width:95%;margin-bottom:40px;padding-top:16px}}.ll-intro-card{background:var(--ll-surface);box-sizing:border-box;border:1px solid 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