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var(--primary);width:1.15rem;height:1.15rem;transform:rotate(-45deg)}.ptr-spinner{width:1.35rem;height:1.35rem}.ptr-surface{min-height:100%}.ptr-surface--pulling,.ptr-surface--snap{will-change:transform}.ptr-surface--pulling{box-shadow:0 -8px 24px #00000014}[data-theme=dark] .ptr-surface--pulling{box-shadow:0 -8px 28px #00000059}.ptr-surface--snap{transition:transform .28s cubic-bezier(.22,1,.36,1)}@media (display-mode:standalone) and (hover:none) and (pointer:coarse){html{overscroll-behavior-y:contain}}.scroll-progress-a11y{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.topbar,.landing-header{background-color:var(--chrome-bg);background-image:linear-gradient(90deg, color-mix(in srgb, var(--primary) 30%, transparent), color-mix(in srgb, var(--primary) 16%, transparent));background-repeat:no-repeat;background-origin:border-box;background-clip:border-box;background-size:calc(var(--scroll-progress,0) * 100%) 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a.active{color:var(--dropdown-link-active-text);background:var(--dropdown-link-active-bg)}.topbar-actions{--header-control-height:2.25rem;flex-shrink:0;align-items:center;gap:.75rem;min-width:0;margin-left:auto;display:flex}.topbar-actions .theme-switch,.topbar-actions .btn{flex-shrink:0}.topbar-actions .theme-switch__track{height:var(--header-control-height)}.topbar-actions .btn{min-height:var(--header-control-height);box-sizing:border-box}.topbar-logout{white-space:nowrap;flex-shrink:0}.topbar-actions--mobile{display:none}.mobile-menu-trigger{z-index:1060;justify-content:center;align-items:center;display:inline-flex;position:relative}body.mobile-menu-open .topbar,body.mobile-menu-open .landing-header{z-index:1}body.mobile-menu-open .mobile-menu-trigger{top:calc(.75rem + env(safe-area-inset-top,0px));z-index:1060;position:fixed;right:1.25rem}@media (width<=768px){body.mobile-menu-open .mobile-menu-trigger{top:calc(.65rem + 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env(safe-area-inset-top,0px));background-color:var(--chrome-bg);-webkit-backdrop-filter:var(--glass-frost);box-shadow:none;transition:border-color .2s var(--ease-out), box-shadow .2s var(--ease-out), background .2s var(--ease-out), border-radius .24s var(--ease-out);border-top:none;border-left:none;border-right:none;border-radius:0;margin:0;position:fixed;top:0;left:0;right:0}.course-outline-trigger[aria-expanded=true]{opacity:0;pointer-events:none}.mobile-menu-panel.course-outline-drawer{width:100%;max-width:none;height:100dvh;box-shadow:none;padding:calc(.75rem + env(safe-area-inset-top,0px)) 1rem calc(1rem + env(safe-area-inset-bottom,0px));border:none;animation:.38s cubic-bezier(.22,1,.36,1) both outline-drawer-fullscreen-in;top:0;left:0;right:0;overflow:hidden;transform:none}.mobile-menu-panel.course-outline-drawer .course-outline-drawer-head,.mobile-menu-panel.course-outline-drawer .course-outline{animation:outline-drawer-content-in .28s var(--ease-out) .16s both}.course-outline-drawer .course-outline{-webkit-overflow-scrolling:touch;flex:1;min-height:0;overflow-y:auto}html.mobile-chrome-immersive .mobile-bottom-nav{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .28s var(--ease-out), transform .32s var(--ease-out), visibility .28s var(--ease-out);transform:translateY(100%)}}@media (prefers-reduced-motion:reduce){html.mobile-chrome-immersive .mobile-bottom-nav{transition:none}}@media (width>=768px){.course-workspace{grid-template-columns:minmax(13.5rem,17.5rem) minmax(0,1fr)}.course-outline-sentinel,.course-outline-trigger{display:none}.course-outline-desktop{grid-area:1/1;max-height:calc(100vh - 7rem);display:block;position:sticky;top:5.5rem;overflow:auto}.course-workspace-main{grid-area:1/2;min-width:0}}.course-outline-step-badge{flex-shrink:0;margin-left:auto;font-size:.6875rem}.program-section{margin-top:1.25rem}.program-section h2{margin:0;font-size:1.3rem}.program-curriculum{flex-direction:column;gap:.4rem;margin:0;padding-left:1.5rem;display:flex}.program-curriculum-item{padding-left:.25rem}.program-curriculum-title{overflow-wrap:anywhere}.program-free-badge{vertical-align:.1em;margin-left:.5em;font-size:.75em}.program-faq-list{flex-direction:column;gap:.5rem;display:flex}.program-faq-item{border:1px solid var(--glass-border);border-radius:var(--radius,.75rem);background:var(--surface-muted);padding:.65rem .9rem}.program-faq-item summary{cursor:pointer;font-weight:600}.program-faq-item p{margin:.5rem 0 0}