.btn{transition:box-shadow var(--md-duration-short4) var(--md-ease-standard), background-color var(--md-duration-short4) var(--md-ease-standard), color var(--md-duration-short4) var(--md-ease-standard), border-radius var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial), scale var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial);border-radius:20px}.btn.small{border-radius:16px}.iconbtn,.stepper button{transition:background-color var(--md-duration-short4) var(--md-ease-standard), color var(--md-duration-short4) var(--md-ease-standard), border-radius var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial), scale var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial);border-radius:20px}.btn:not(.link,:disabled,[aria-disabled=true]):active,.iconbtn:not(:disabled,[aria-disabled=true]):active,.stepper 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var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial);margin:0}.seg>:first-child{border-radius:20px var(--md-shape-s) var(--md-shape-s) 20px}.seg>:last-child{border-radius:var(--md-shape-s) 20px 20px var(--md-shape-s)}.seg>:only-child,.seg :is(button,a):is([aria-pressed=true],[aria-selected=true],[aria-checked=true],[aria-current]){border-radius:20px}.seg button:not(:disabled):active,.seg>a:active{flex-grow:1.3}.nav-dest[aria-current] .nav-ind{background:0 0;animation:none}.nav-ind:after{content:"";z-index:-2;border-radius:inherit;background:var(--md-secondary-container);opacity:0;position:absolute;inset:0}.nav-dest[aria-current] .nav-ind:after{opacity:1;animation:md-indicator var(--md-duration-medium2) var(--md-ease-emphasized-decelerate) backwards}.learning-nav[data-travel] .nav-dest[aria-current] .nav-ind:after{animation:none}.nav-dest[aria-current] .nav-ind .i{animation:md-icon-bounce var(--md-spring-bouncy-duration) var(--md-spring-bouncy) backwards}@keyframes 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md-loading-turn{to{rotate:1turn}}.md-status{align-items:center;gap:var(--space-3);display:inline-flex}.md-wavy{background:var(--field-accent,var(--md-primary));max-width:320px;height:10px;animation:1s linear infinite md-wavy-flow;display:block;-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='10'%3E%3Cpath d='M0 5 Q10 0 20 5 T40 5' fill='none' stroke='black' stroke-width='3.5' stroke-linecap='round'/%3E%3C/svg%3E"),linear-gradient(#000,#000);mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='10'%3E%3Cpath d='M0 5 Q10 0 20 5 T40 5' fill='none' stroke='black' stroke-width='3.5' stroke-linecap='round'/%3E%3C/svg%3E"),linear-gradient(#000,#000);-webkit-mask-position:0 0,0 0;mask-position:0 0,0 0;-webkit-mask-size:40px 10px,100% 100%;mask-size:40px 10px,100% 100%;-webkit-mask-repeat:repeat-x,no-repeat;mask-repeat:repeat-x,no-repeat;-webkit-mask-clip:border-box,border-box;mask-clip:border-box,border-box;-webkit-mask-origin:border-box,border-box;mask-origin:border-box,border-box;-webkit-mask-composite:source-in;mask-composite:intersect;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}@keyframes md-wavy-flow{to{-webkit-mask-position:40px 0,0 0;mask-position:40px 0,0 0}}.fab{transition:box-shadow var(--md-duration-short4) var(--md-ease-standard), border-radius var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial), scale var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial);animation:md-fab-in var(--md-spring-bouncy-duration) var(--md-spring-bouncy) .15s backwards}.fab:active{border-radius:var(--md-shape-xl);scale:.95}.fab .i{transition:rotate var(--md-spring-default-spatial-duration) var(--md-spring-default-spatial)}.fab[aria-expanded=true] .i{rotate:-12deg}@keyframes md-fab-in{0%{opacity:0;scale:.6}}.mastery[data-state=mastered],.mastery[data-state=learning]{animation:md-badge-in var(--md-spring-bouncy-duration) var(--md-spring-bouncy) backwards}.mastery[data-state=due]{animation:md-badge-in var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial) backwards}.progress:before{animation:md-grow .9s var(--md-spring-default-spatial) backwards}@keyframes md-badge-in{0%{rotate:-90deg;scale:0}}@keyframes md-nudge{0%,to{translate:0}25%{translate:-8px}50%{translate:6px}75%{translate:-3px}}.notice.ok.md-enter>.i{animation:md-badge-in var(--md-spring-bouncy-duration) var(--md-spring-bouncy) .1s backwards}.notice.error.md-enter{animation:md-card-in var(--md-duration-long1) var(--md-ease-emphasized-decelerate) backwards, md-nudge .42s var(--md-spring-fast-spatial) .12s}.notice.error.md-enter>.i{animation:md-badge-in var(--md-spring-fast-spatial-duration) var(--md-spring-fast-spatial) backwards}.md-burst{position:relative}.md-burst:after{content:"";pointer-events:none;background:radial-gradient(circle at 50% 0%, var(--md-success) 2.5px, transparent 3px), radial-gradient(circle at 93% 25%, var(--md-primary) 2.5px, transparent 3px), radial-gradient(circle at 93% 75%, var(--md-tertiary) 2.5px, transparent 3px), radial-gradient(circle at 50% 100%, var(--md-success) 2.5px, transparent 3px), radial-gradient(circle at 7% 75%, var(--md-primary) 2.5px, transparent 3px), radial-gradient(circle at 7% 25%, var(--md-tertiary) 2.5px, transparent 3px);opacity:0;animation:md-burst .64s var(--md-ease-emphasized-decelerate) .12s;border-radius:50%;position:absolute;inset:-18px}@keyframes md-burst{0%{opacity:1;scale:.35}to{opacity:0;rotate:30deg;scale:1.25}}@supports (animation-timeline:view()){.list>li>.list-item,.list>.list-item{animation:linear both md-row-in;animation-timeline:view();animation-range:entry entry 70%}}@keyframes md-row-in{0%{translate:0 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var(--md-ease-emphasized-decelerate), clip-path var(--md-spring-default-spatial-duration) var(--md-spring-default-spatial);clip-path:inset(0 round var(--md-shape-l))}.home-course-card:hover .home-course-icon{clip-path:inset(0 round 50%)}}.empty-state-icon{animation:3.2s ease-in-out infinite alternate md-decor-bob}.md-decor-math svg{width:65%;height:100%;position:absolute;inset:0 0 0 35%}.md-decor-math path{fill:none;stroke:var(--field-ink,var(--md-primary));stroke-width:2px;stroke-linecap:round;opacity:.2;stroke-dasharray:900;animation:md-draw 6s var(--md-ease-emphasized-decelerate) backwards}.md-decor-math path:nth-child(2){opacity:.14;animation-delay:.8s}.md-decor-math path:nth-child(3){opacity:.1;animation-delay:1.6s}.md-decor-math circle{fill:var(--field-accent,var(--md-primary));opacity:.55;offset-distance:60%;animation:7s ease-in-out 1s infinite alternate md-ride}@keyframes md-draw{0%{stroke-dashoffset:900px}}@keyframes 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svg:nth-child(n+2),.md-pendulum{display:none}.md-orbit{top:-30px;right:-40px}}.md-aurora{z-index:-1;pointer-events:none;height:420px;position:absolute;inset:0 0 auto;overflow:hidden}.md-aurora>i{aspect-ratio:1;filter:blur(60px);opacity:.5;border-radius:50%;width:55%;position:absolute}.md-aurora>i:first-child{background:var(--md-primary-container);animation:16s ease-in-out infinite alternate md-aurora-a;top:-40%;left:-10%}.md-aurora>i:nth-child(2){background:var(--md-tertiary-container);animation:20s ease-in-out infinite alternate md-aurora-b;top:-10%;right:-15%}.md-aurora>i:nth-child(3){background:var(--md-secondary-container);opacity:.35;animation:18s ease-in-out infinite alternate-reverse md-aurora-a;top:20%;left:25%}@keyframes md-aurora-a{to{translate:25% 15%}}@keyframes md-aurora-b{to{translate:-20% 10%}}:is(:is(.auth-entry,.errorpage):has(>.md-aurora),.page:has(>.md-aurora)){isolation:isolate;position:relative}.md-squiggle:after{content:"";width:132px;height:10px;margin-top:var(--space-2);background:var(--md-primary);display:block;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='36' height='10'%3E%3Cpath d='M2 6 Q 10 1 18 6 T 34 6' fill='none' stroke='black' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") 0 0/36px 10px repeat-x;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='36' height='10'%3E%3Cpath d='M2 6 Q 10 1 18 6 T 34 6' fill='none' stroke='black' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") 0 0/36px 10px repeat-x}@supports (animation-timeline:view()){.md-squiggle:after{animation:linear both md-squiggle-draw;animation-timeline:view();animation-range:entry 10% cover 35%}}@keyframes md-squiggle-draw{0%{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0)}}.home-course{perspective:900px}@media (hover:hover) and (prefers-reduced-motion:no-preference){:root:not([data-motion=less]) a.card.home-course-card[data-tilt]:hover{transform:translateY(-2px) rotateX(calc(var(--tilt-y,0) * -8deg)) rotateY(calc(var(--tilt-x,0) * 8deg))}:root:not([data-motion=less]) .home-course-card[data-tilt]:hover .home-course-icon{translate:calc(var(--tilt-x,0) * -10px) calc(var(--tilt-y,0) * -10px)}}.md-celebrate{z-index:60;pointer-events:none;position:fixed;inset:0;overflow:hidden}.md-celebrate>i{background:var(--md-success);width:16px;height:16px;animation:md-fall 1.8s var(--md-ease-standard-accelerate) 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md-fan-a;top:6px;rotate:-8deg}.md-empty-ill>i:nth-child(2){background:var(--md-secondary-container);animation:3s ease-in-out infinite alternate md-fan-b;top:22px;rotate:4deg}.md-empty-ill>i:nth-child(3){background:var(--md-primary-container);top:40px}.md-empty-ill>b{border:5px solid var(--md-primary);border-radius:50%;width:42px;height:42px;animation:2.8s ease-in-out infinite md-search-around;position:absolute;bottom:4px;right:4px}.md-empty-ill>b:after{content:"";background:var(--md-primary);border-radius:3px;width:5px;height:18px;position:absolute;bottom:-15px;right:-9px;rotate:-45deg}@keyframes md-fan-a{to{translate:-6px -4px;rotate:-14deg}}@keyframes md-fan-b{to{translate:6px -2px;rotate:9deg}}@keyframes md-search-around{0%,to{translate:0}33%{translate:-36px -8px}66%{translate:-18px -34px}}.md-dotpaper{isolation:isolate;position:relative}.md-dotpaper:before{content:"";inset:calc(var(--space-4) * -1) calc(var(--gutter) * -1) 0;z-index:-1;pointer-events:none;background-image:radial-gradient(circle, color-mix(in srgb, var(--md-field-plan-accent) 40%, transparent) 1.2px, transparent 1.6px);-webkit-mask:radial-gradient(circle 180px at var(--glow-x,80%) var(--glow-y,30%), #000 0, #0000002e 100%);mask:radial-gradient(circle 180px at var(--glow-x,80%) var(--glow-y,30%), #000 0, #0000002e 100%);background-size:22px 22px;position:absolute}.md-day-orb{width:18px;height:18px;margin-left:var(--space-1);background:var(--md-warning);box-shadow:0 0 0 4px color-mix(in srgb, var(--md-warning) 20%, transparent);vertical-align:-3px;animation:md-badge-in var(--md-spring-bouncy-duration) var(--md-spring-bouncy) .3s backwards;border-radius:50%;display:inline-block;position:relative;overflow:hidden}.md-day-orb[data-night=true]{background:var(--md-tertiary);box-shadow:0 0 0 4px color-mix(in srgb, var(--md-tertiary) 20%, transparent)}.md-day-orb[data-night=true]:after{content:"";background:var(--md-surface);width:100%;height:100%;animation:md-crescent var(--md-spring-bouncy-duration) var(--md-spring-bouncy) .5s backwards;border-radius:50%;position:absolute;top:-30%;left:38%}@keyframes md-crescent{0%{left:110%}}@media print{.md-aurora,.md-celebrate,.md-dotpaper:before{display:none}}@media (prefers-reduced-motion:reduce){::view-transition-group(*){animation:none!important}::view-transition-old(*){animation:none!important}::view-transition-new(*){animation:none!important}}:root[data-motion=less]::view-transition-group(*){animation:none!important}:root[data-motion=less]::view-transition-old(*){animation:none!important}:root[data-motion=less]::view-transition-new(*){animation:none!important}