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680px){.marketing-video{padding:0}}.marketing-video__video{height:0;padding-bottom:56.25%;position:relative}.marketing-video__video embed,.marketing-video__video object,.marketing-video__video iframe{position:absolute;top:0;left:0;height:100%;width:100%}.modal{position:fixed;top:0;right:0;bottom:0;left:0;align-items:center;animation-delay:300ms;animation-duration:0;animation-fill-mode:forwards;animation-name:fade-out;display:flex;justify-content:center;padding:1rem;z-index:25}.modal.is-open{animation-delay:0;animation-name:fade-in}.modal__content{transform:translateY(200%);transition:transform 300ms cubic-bezier(0.445, 0.05, 0.55, 0.95);z-index:1}.is-open .modal__content{transform:translateY(0)}.modal__background{position:absolute;top:0;right:0;bottom:0;left:0;background-color:#fff;opacity:0;transition:opacity 300ms cubic-bezier(0.445, 0.05, 0.55, 0.95)}.is-open 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svg{height:4rem;width:4rem;margin-right:1rem}.modal__tease--clean-code{background-color:#effeff;border-color:#dbfeff;color:#66f9ff}.modal__tease--design{background-color:#f2f3ff;border-color:#dedfff;color:#696fff}.modal__tease--elixir{background-color:#fbf4ff;border-color:#f5e0ff;color:#ce6bff}.modal__tease--git{background-color:#fdf7d2;border-color:#fbf3be;color:#f5df4f}.modal__tease--haskell{background-color:#fff3fe;border-color:#ffdffc;color:#ff6af1}.modal__tease--ios{background-color:#e1f1ff;border-color:#cde7ff;color:#58afff}.modal__tease--javascript{background-color:#ffecd4;border-color:#ffe4c0;color:#ffb14b}.modal__tease--python{background-color:#2359dd;border-color:#2051cc;color:#102967}.modal__tease--react{background-color:#fdffff;border-color:#e9f9ff;color:#74dcff}.modal__tease--ruby-on-rails{background-color:#fff6f7;border-color:#ffe2e5;color:#ff6d7c}.modal__tease--swift{background-color:#fff4ee;border-color:#ffe8da;color:#ff9e65}.modal__tease--testing{background-color:#eefef8;border-color:#dcfcf0;color:#6ff4c2}.modal__tease--tmux{background-color:#fdf7d2;border-color:#fbf3be;color:#f5df4f}.modal__tease--vim{background-color:#ebf8ff;border-color:#d7f2ff;color:#62cbff}.page-content{margin:0 auto;max-width:1024px;padding:3.75rem 1rem}@media (min-width: 680px){.page-content{padding-top:6rem;padding-bottom:6rem}}.page-content+.page-content{padding-top:0}.page-content--tight{padding-top:0;padding-bottom:0}@media (min-width: 420px){.page-content--centered{align-items:stretch;display:flex;justify-content:center}}.page-content--interstitial{padding-top:0;padding-bottom:0;margin:-3.75rem auto 0}@media (min-width: 680px){.page-content--interstitial{margin-top:-6rem}}.page-content--reading{padding-right:2em;padding-left:2em;max-width:560px}@media (min-width: 680px){.page-content--reading{padding-right:0;padding-left:0}}.page-content--reading h1,.page-content--reading h2,.page-content--reading h3,.page-content--reading h4,.page-content--reading h5,.page-content--reading h6{margin:2em 0}.page-content--reading p{margin-bottom:1rem}.page-content__heading{color:#ed3e44;display:block;font-family:"calibre-medium", sans-serif;font-size:1.7rem;font-weight:normal;margin:0 auto 1rem;max-width:560px;text-align:center}.page-content__intro{color:#a4a4a4;margin:0 auto 2em;max-width:560px;text-align:center}.page-section{position:relative}.page-section--dark{background-color:#FAFBFD;border-bottom:1px solid #ecf1ff;border-top:1px solid #ecf1ff}@media (min-width: 680px){.page-section--split{display:flex;justify-content:center}}.page-section--split__column{display:flex;justify-content:center}@media (min-width: 680px){.page-section--split__column{width:50%}}.page-section--split__column:last-child{background-color:#f8faff;border-left:1px solid #ecf1ff}.page-split{max-width:1024px;margin:2em auto 0;padding:0 1rem}@media (min-width: 680px){.page-split{display:flex}}.page-split__section{margin-top:3.75rem}@media (min-width: 680px){.page-split__section{margin-top:1rem;padding:0 6rem;width:50%}}.page-split__heading{margin-bottom:2em}.page-split__item{margin:1rem 0;min-height:7rem;position:relative}.page-split__item:last-child{margin-bottom:0}.page-split__section:first-child .page-split__item::after{height:2px;width:5rem;background-color:rgba(35,135,224,0.25);border-radius:1rem;content:"";position:absolute;right:calc(-6rem - 2.5rem);top:0.35rem}.persistent-toast{align-items:stretch;background:#ebf3ff;border-radius:16px;bottom:1rem;box-shadow:0 12px 12px -6px rgba(0,0,0,0.3),0 0 1px 0 rgba(0,0,0,0.4);display:flex;left:50%;max-width:30rem;overflow:hidden;position:fixed;transform:translateX(-50%);width:90vw;z-index:999}.icon-container{align-items:center;color:#2639c8;display:flex;justify-content:center;padding:0.5rem}.toast-content{color:#2639c8;flex:1;height:100%;padding:0.5rem}.toast-cta-container{display:flex;flex-direction:column;justify-content:space-between}.toast-cta-container a,.toast-cta-container button{align-items:center;background:#ebf3ff;border:solid 1px #abd2f4;border-right:0;color:#2639c8;display:flex;flex:1;font-family:"calibre-medium", sans-serif;font-size:1.25rem;gap:0.5rem;margin-left:-1px;margin-top:-1px;padding:0.5rem 1rem;transition:all 0.15s ease-in-out}.toast-cta-container a:first-child,.toast-cta-container button:first-child{border-top:0}.toast-cta-container a:last-child,.toast-cta-container button:last-child{border-bottom:0}.toast-cta-container a:hover,.toast-cta-container button:hover{background:#2387e0;color:#fff}@media screen and (min-width: 420px){.persistent-toast{transform:translateX(0);left:1rem}.toast-content,.icon-container{padding:1rem}}.person{align-items:center;display:flex;margin-top:1rem}.person__face{height:60px;width:60px;margin-right:0.5rem}.selling-point{padding-right:2rem;padding-left:4rem;margin:0 1rem 3.75rem;position:relative;width:100%}@media (min-width: 420px){.selling-point{max-width:220px;padding:0;width:33%}}.selling-point__title{color:#ed3e44;display:block;font-size:1.7rem;margin-bottom:1rem}.selling-point__image{position:absolute;top:-1rem;left:-1rem;height:5rem;width:5rem;display:block}@media (min-width: 420px){.selling-point__image{height:6rem;width:6rem;position:relative}}.testimonial-heading{font-weight:bold;margin-bottom:2em}.testimonial-heading--tapas{color:#ff4340}.testimonial-heading--upcase{color:#6289ff}.testimonial{color:#999999;line-height:1.3;max-width:24rem;position:relative}.testimonial::before{position:absolute;top:-0.5rem;left:-0.6rem;content:'"';font-family:"calibre-medium", sans-serif;font-size:1.5rem}.testimonial strong{color:#ed3e44;font-family:"calibre-medium", sans-serif}.testimonial p:last-of-type{margin-bottom:2em}.testimonial--large{font-size:1.2rem}@media (min-width: 680px){.testimonial--large{font-size:1.6rem}}.testimonial--large::before{font-size:2.5rem;left:-1rem}.testimonial__person{align-items:center;color:#a4a4a4}.testimonial__person svg,.testimonial__person img{height:4rem;width:4rem;border-radius:6px;margin-right:1rem}.testimonial__person--name{color:#999999;font-weight:bold}.testimonial__person+p{margin-top:1rem}.tier-price{margin:1rem 0 0.5rem}.tier-price strike{color:#999;display:block;margin-bottom:1rem}.tier-price__price{display:block;margin-bottom:0.5rem}.tier-price__price strong{font-size:2.5rem}.tier-price__value{display:inline-block}.tier-quantity{border-radius:3px;border:solid 1px #ed3e44;margin-bottom:1rem;padding:0.6rem 1rem 0.8rem}.tier-quantity select{float:right}.tiers{margin:3.75rem auto;max-width:1024px}@media (min-width: 680px){.tiers{display:flex;margin-bottom:0}}.tier{border-radius:2px;border:1px solid #ecf1ff;box-shadow:0 0.5rem 1.5rem rgba(60,127,239,0.2);display:flex;flex-direction:column;padding:3.75rem;transition:150ms}@media (min-width: 680px){.tier{margin:0 1em 2em;padding:2em;width:calc(50% - 2em)}}@media (min-width: 1024px){.tier{padding:3.75rem}}.tier .stripe-button-el{width:100%}.tier__title{color:#232020;margin-bottom:2em}.tier__feature-list{flex-grow:99}.tier__feature-list li{font-family:"calibre-medium", sans-serif;line-height:1.2em;margin-bottom:1rem}.tier__normal-price{color:#8c8383;display:block;font-size:0.85rem}.tier__sale{background-color:#ffffe6;border:solid 1px #f2f2db;font-size:0.95rem;color:#9b8f11;font-family:"calibre-medium", sans-serif;margin-bottom:1rem;padding:0.5rem;text-align:center}.tier__sale-placeholder{visibility:hidden}.welcome-page{margin:0 auto;max-width:780px}@media screen and (min-width: 800px){.welcome-page .flashcards-overview{float:left;max-width:58%}}.welcome-page section{margin-top:95px}.welcome-page section::after{clear:both;content:"";display:block}.welcome-page h2{margin:10px 0}.welcome-page h1{margin-bottom:40px;margin-top:40px;text-align:center}.welcome-page h3{font-size:1.8em;margin-bottom:22px}.welcome-page .help-widget-image{float:left;height:75px;margin-right:20px;margin-top:8px}.welcome-page .ben-image{display:block;height:400px;margin-left:auto;margin-right:auto}.welcome-page .trail-image{margin-top:20px}.about-us__video{margin:0 auto;padding-top:3.75rem;max-width:900px}.about-us__lede{max-width:560px;margin-bottom:3.75rem}.about-us__lede p{color:#999999;font-size:1.4rem;line-height:1.3;margin-bottom:2rem;text-align:center}.about-us__lede p:first-of-type{color:rgba(41,41,44,0.9);font-family:"calibre-medium", sans-serif;font-size:2.2rem;font-weight:normal;line-height:1.2}.about-us__enter-upcase{color:#ed3e44;font-family:"calibre-medium", sans-serif;font-size:2.2rem;font-weight:normal;margin-bottom:2rem;text-align:center}.about-us__why-upcase{color:rgba(41,41,44,0.9);font-family:"calibre-medium", sans-serif;font-size:2.2rem;font-weight:normal;line-height:1.2;margin-top:-1rem !important;margin-bottom:1rem !important;text-align:center}.about-us__history{color:#a4a4a4;text-align:center}.about-us__topics-title{color:#ed3e44;font-family:"calibre-medium", sans-serif;font-size:1.5rem;font-weight:normal;margin-bottom:1rem;text-align:center}.about-us__topic-list{margin-bottom:4rem}@media (min-width: 800px){.about-us__topic-list{align-content:stretch;display:flex}}.about-us__topic{border-radius:0 0 3px 3px;border-top:10px solid #f3f3f3;box-shadow:0 0 0 1px #ddd;margin:1em 0.5em;overflow:hidden;padding:1.5em;text-align:left}@media (min-width: 800px){.about-us__topic{width:25%}}.about-us__topic strong{color:#555;display:block;font-size:1.5rem;margin-bottom:0.5rem}.about-us__upcase-reppresents{margin:0 auto 2rem auto;max-width:560px;padding-left:1rem;padding-right:1rem;text-align:center}.about-us__cta{display:flex;justify-content:center}