.learn-shell{--learn-ink:#28392d;--learn-muted:#536052;--learn-paper:#fffdf5;--learn-lilac:#e3ddf3;--learn-peach:#f6dcc5;--learn-yellow:#f1dc85;--learn-mint:#dfe9d4;color:var(--learn-ink)}.learn-shell .marketing-nav{border-color:#cdd4c6}.learn-shell h1,.learn-shell h2,.learn-shell h3{letter-spacing:-.035em;font-family:Georgia,Times New Roman,serif;font-weight:500}.learn-eyebrow,.learn-small-label{text-transform:uppercase;letter-spacing:.12em;font-size:.73rem;font-weight:750;line-height:1.6}.learn-eyebrow>span{color:var(--learn-muted);margin-left:12px;font-weight:500;display:inline-block}.learn-library-hero{grid-template-columns:minmax(0,1fr) 230px;align-items:center;gap:30px;padding:58px 0 46px;display:grid}.learn-library-hero h1{margin:20px 0 22px;font-size:clamp(2.6rem,5.8vw,4.8rem);line-height:1.06}.learn-library-hero h1 em{z-index:0;position:relative}.learn-library-hero h1 em:after{content:"";z-index:-1;background:var(--learn-yellow);height:.25em;position:absolute;bottom:2px;left:-4px;right:-4px;transform:rotate(-2deg)}.learn-deck{max-width:590px;font-size:1.1rem}.learn-doodle{width:100%;max-width:240px;color:var(--learn-ink);display:block}.learn-hero-art{padding-bottom:25px;position:relative}.learn-margin-note{text-align:center;font-family:Georgia,serif;font-size:.92rem;font-style:italic;line-height:1.5;display:block;transform:rotate(-6deg)}.learn-feature{background:var(--learn-mint);border:1px solid #bdc8b5;border-radius:8px 28px 8px 8px;grid-template-columns:260px minmax(0,1fr);align-items:center;gap:36px;padding:34px;text-decoration:none;transition:transform .16s,box-shadow .16s;display:grid}.learn-feature:hover,.learn-feature:focus-visible{transform:translateY(-3px);box-shadow:0 8px #d1d9c9}.learn-feature h2{margin:16px 0;font-size:clamp(1.8rem,3.4vw,2.7rem);line-height:1.12}.learn-feature-art{padding-bottom:32px;position:relative}.learn-stamp{border:1px solid var(--learn-ink);text-align:center;background:var(--learn-paper);border-radius:50%;width:fit-content;margin:0 auto;padding:12px 23px;font:italic .88rem/1.3 Georgia,serif;display:block;transform:rotate(-8deg)}.learn-invitation{text-underline-offset:5px;align-items:center;gap:14px;font-size:.9rem;font-weight:700;text-decoration:underline;display:inline-flex}.learn-invitation>span{font-size:1.3rem}.learn-shelf{margin-top:54px}.learn-shelf-heading{justify-content:space-between;align-items:baseline;gap:24px;margin-bottom:24px;display:flex}.learn-shelf-heading h2{margin:0;font-size:1.9rem}.learn-shelf-heading p{color:var(--learn-muted);font-size:.85rem}.learn-card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.learn-card{background:var(--learn-paper);border:1px solid #cbd0c4;border-radius:6px;flex-direction:column;padding:24px;transition:transform .16s,box-shadow .16s;display:flex;position:relative}.learn-card:hover,.learn-card:focus-within{transform:translateY(-3px);box-shadow:0 5px #dddccd}.learn-card-1{background:#eee9f6}.learn-card-2{background:#f8e9d9}.learn-card-top{justify-content:space-between;align-items:baseline;gap:10px;display:flex}.learn-topic{letter-spacing:.1em;text-transform:uppercase;font-size:.68rem;font-weight:750}.learn-card-number{color:var(--learn-muted);font:italic 1rem Georgia,serif}.learn-card .learn-doodle{width:120px;height:90px;margin:16px 0}.learn-card h3{margin:6px 0 12px;font-size:1.55rem;line-height:1.18}.learn-card h3 a{text-decoration:none}.learn-card h3 a:hover{text-decoration:underline}.learn-card .learn-card-hook{margin:0 0 28px;font-size:.95rem;line-height:1.6}.learn-card>.learn-invitation{margin-top:auto;padding-top:8px}.learn-library-note{border-top:1px dashed #a6b49e;align-items:center;gap:20px;margin-top:44px;padding-top:24px;display:flex}.learn-library-note>span{font-size:2.5rem}.learn-library-note p{flex:1;max-width:620px}.learn-library-note a{flex-shrink:0;font-weight:700}.learn-article{max-width:750px;margin:40px auto 0}.learn-back{margin-bottom:28px;font-size:.85rem;display:inline-block}.learn-article-header{border-bottom:1px solid #d3d7cd;padding-bottom:24px}.learn-article-header h1{margin:22px 0;font-size:clamp(2rem,4.8vw,3.35rem);line-height:1.12}.learn-hook{margin:24px 0 16px;font-family:Georgia,serif;font-size:clamp(1.2rem,2.4vw,1.55rem);font-style:italic;line-height:1.4!important}.learn-summary{color:var(--learn-muted);max-width:680px;font-size:1rem}.learn-byline{color:var(--learn-muted);margin-top:24px;font-size:.78rem}.learn-byline>span{display:inline-block}.learn-section{margin-top:34px}.learn-section h2{margin:0 0 18px;font-size:1.6rem;line-height:1.25}.learn-section p,.learn-reveal p{font-size:1.02rem;line-height:1.8}.learn-section p a,.learn-reveal p a{text-underline-offset:3px;text-decoration-color:#94a88a;text-decoration-thickness:1px}.learn-section p a:hover,.learn-reveal p a:hover{-webkit-text-decoration-color:var(--learn-ink);text-decoration-color:var(--learn-ink)}.learn-example{background:var(--learn-paper);border:1px solid #cbd0c4;border-radius:10px;margin:30px 0;padding:26px}.learn-example>.learn-small-label{margin-top:0;margin-bottom:20px}.learn-shell .learn-example figcaption{color:var(--learn-muted);margin-top:20px;font-size:.85rem}.learn-pair{grid-template-columns:minmax(0,1fr) 32px minmax(0,1fr);align-items:stretch;gap:12px;display:grid}.learn-pair>div{text-align:center;background:var(--learn-lilac);border:1px solid #c6c2cf;border-radius:5px;flex-direction:column;justify-content:center;gap:10px;padding:20px 14px;display:flex}.learn-pair>div:last-child{background:var(--learn-peach);border-color:#d4c0a9}.learn-pair>div>span{font-size:1.7rem}.learn-pair strong{font:500 1.15rem/1.3 Georgia,serif}.learn-pair small{font-size:.8rem;line-height:1.4}.learn-pair-join{text-align:center;align-self:center;font-size:1.45rem}.learn-pair-section{background:var(--learn-paper);border:1px solid #d3d7cd;border-radius:6px;padding:28px}.learn-pair-section>p:last-child{margin-bottom:0}.learn-section-label{letter-spacing:.1em;text-transform:uppercase;color:#405b39;margin:0 0 12px;font-weight:750;font-size:.75rem!important}.learn-pair-section .learn-section-label{background:var(--learn-yellow);border:1px solid #cbd0c4;border-radius:50%;padding:6px 16px;display:inline-block}.learn-timeline-entry{border-left:2px solid #c0cdb5;margin:0;padding:12px 0 12px 30px;position:relative}.learn-timeline-entry:before{content:"";border:2px solid var(--learn-ink);background:var(--learn-yellow);border-radius:50%;width:12px;height:12px;position:absolute;top:16px;left:-7px}.learn-timeline-entry h2{font-size:1.45rem}.learn-timeline-entry p:last-child{margin-bottom:12px}.learn-body>.learn-timeline-entry:first-of-type{margin-top:30px}.learn-ratio-row{grid-template-columns:90px minmax(0,1fr) 70px;align-items:center;gap:14px;margin:16px 0;font-size:.9rem;display:grid}.learn-ratio-row>div{background:#f1eee5;border-radius:3px;height:30px;overflow:hidden}.learn-ratio-row i{background:#80649f;height:100%;display:block}.learn-ratio-row:nth-of-type(2) i{background:#ba663f}.learn-basket{border-bottom:3px solid #728769;border-radius:0 0 18px 18px;justify-content:center;align-items:center;gap:14px;padding:16px;display:flex}.learn-basket>span:nth-child(odd){background:var(--learn-mint);border:1px solid #bac9ad;border-radius:7px;padding:18px 14px;font-weight:700;display:block}.learn-equation{text-align:center;font-size:1.25rem;font-weight:700}.learn-equation>span{font-size:.9rem;font-weight:400}.learn-swap{justify-content:center;align-items:center;gap:18px;font-size:.9rem;display:flex}.learn-swap>span:first-child{background:var(--learn-peach);border-radius:6px;padding:12px}.learn-swap>span:last-child{background:var(--learn-lilac);border-radius:6px;padding:12px}.learn-two-ways{grid-template-columns:1fr 1fr;gap:20px;display:grid}.learn-two-ways>div{background:var(--learn-lilac);border-radius:6px;padding:20px}.learn-two-ways>div:last-child{background:var(--learn-mint)}.learn-two-ways strong{font:500 1.3rem/1.3 Georgia,serif;display:block}.learn-two-ways>div>span{letter-spacing:.2em;font:italic 1.5rem Georgia,serif;display:block}.learn-checklist{counter-reset:checks;gap:10px;padding:0;list-style:none;display:grid}.learn-checklist li{counter-increment:checks;align-items:center;gap:14px;display:flex}.learn-checklist li:before{content:counter(checks, decimal-leading-zero);background:var(--learn-mint);border:1px solid #c3cbb8;padding:5px 9px;font-size:.75rem}.learn-tips{padding-left:24px}.learn-tips li{margin-bottom:12px}.learn-reveal{background:#f4edce;border:1px dashed #899878;border-radius:8px;margin:38px 0}.learn-reveal summary{cursor:pointer;align-items:center;gap:12px;padding:20px;font-weight:650;line-height:1.5;list-style:none;display:flex}.learn-reveal summary::-webkit-details-marker{display:none}.learn-reveal summary>span:first-child{flex-shrink:0;font-size:1.4rem}.learn-reveal-plus{flex-shrink:0;margin-left:auto;font-size:1.5rem;transition:transform .16s}.learn-reveal[open] .learn-reveal-plus{transform:rotate(45deg)}.learn-reveal>div{border-top:1px dashed #b6b18d;padding:0 24px 12px}.learn-play{background:var(--learn-mint);border:1px solid #bbc8b1;border-radius:8px 24px 8px 8px;margin-top:40px;padding:30px}.learn-play h2{margin:18px 0;font-size:2.1rem}.learn-app-links{flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;font-size:.8rem;display:flex}.learn-app-links .marketing-text-link{margin:0}.learn-sources{color:var(--learn-muted);border-top:1px solid #d3d7cd;margin-top:42px;padding-top:24px}.learn-sources h2{margin-bottom:12px;font-size:1.35rem}.learn-sources p,.learn-sources li{font-size:.83rem;line-height:1.7}.learn-sources ul{grid-template-columns:1fr 1fr;gap:12px 24px;padding-left:18px;display:grid}.learn-sources a{overflow-wrap:anywhere}.learn-shell a:focus-visible,.learn-shell summary:focus-visible{outline-offset:5px;border-radius:3px;outline:3px solid #39748d}@media (max-width:780px){.learn-library-hero{grid-template-columns:minmax(0,1fr) 150px;gap:10px}.learn-feature{grid-template-columns:170px minmax(0,1fr);gap:24px;padding:26px}.learn-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-card-grid .learn-card:last-child:nth-child(odd){grid-column:1/-1}.learn-shelf-heading{flex-direction:column;align-items:flex-start;gap:0}}@media (max-width:520px){.learn-library-hero{grid-template-columns:1fr;padding:36px 0 28px}.learn-library-hero h1{font-size:2.9rem}.learn-eyebrow>span{margin-left:0;display:block}.learn-hero-art{display:none}.learn-feature{grid-template-columns:1fr;gap:8px;padding:24px}.learn-feature-art{align-items:center;gap:12px;padding-bottom:10px;display:flex}.learn-feature-art .learn-doodle{flex-shrink:0;width:130px}.learn-stamp{padding:8px 14px;font-size:.78rem}.learn-card-grid{grid-template-columns:1fr}.learn-card{padding:22px}.learn-card .learn-doodle{width:96px;height:72px}.learn-library-note{flex-wrap:wrap;gap:12px}.learn-library-note p{flex:1 0 220px}.learn-article{margin-top:26px}.learn-byline>span{display:block}.learn-example,.learn-pair-section{padding:18px}.learn-pair{grid-template-columns:minmax(0,1fr) 24px minmax(0,1fr);gap:6px}.learn-pair>div{padding:14px 9px}.learn-pair strong{font-size:1rem}.learn-pair small{font-size:.72rem}.learn-ratio-row{grid-template-columns:65px minmax(0,1fr) 54px;gap:8px;font-size:.75rem}.learn-basket{gap:7px;padding:12px 0}.learn-basket>span:nth-child(odd){padding:16px 10px;font-size:.85rem}.learn-two-ways{gap:12px}.learn-two-ways>div{padding:14px}.learn-two-ways strong{font-size:1.07rem}.learn-sources ul{grid-template-columns:1fr}.learn-play{padding:24px}}@media (prefers-reduced-motion:reduce){.learn-shell *,.learn-shell :before,.learn-shell :after{transition:none!important;animation:none!important}.learn-feature:hover,.learn-feature:focus-visible,.learn-card:hover,.learn-card:focus-within{transform:none}}