.lesson-module__Qe4ksq__lessonPage{--ink:#071a2b;--ink-soft:#294957;--paper:#eef6f4;--white:#fbfefd;--line:#c7d9d7;--cyan:#0c9faf;min-height:100vh;color:var(--ink);background-color:#f3f9f7;background-image:linear-gradient(#3a63690b 1px,#0000 1px),linear-gradient(90deg,#3a63690b 1px,#0000 1px),none;background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:34px 34px;background-attachment:scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box;font-family:Avenir Next,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif}.lesson-module__Qe4ksq__lessonLayout{grid-template-columns:17.5rem minmax(0,1fr);gap:clamp(2.5rem,6vw,6rem);width:min(100% - 3rem,1260px);margin:0 auto;padding:3.25rem 0 8rem;display:grid}.lesson-module__Qe4ksq__courseNav{border:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fbfefdeb;align-self:start;max-height:calc(100vh - 7rem);position:sticky;top:5.5rem}.lesson-module__Qe4ksq__navHeading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:1rem;min-height:3.5rem;padding:0 .9rem;display:flex}.lesson-module__Qe4ksq__navHeading a{color:var(--ink);font-size:.83rem;font-weight:780;text-decoration:none}.lesson-module__Qe4ksq__navHeading span{color:#738a8e;font-family:SFMono-Regular,ui-monospace,monospace;font-size:.6rem}.lesson-module__Qe4ksq__progressTrack{background:#dce9e7;height:3px}.lesson-module__Qe4ksq__progressTrack i{background:var(--cyan);height:100%;transition:width .22s;display:block}.lesson-module__Qe4ksq__desktopCatalog{max-height:calc(100vh - 14rem);overflow-y:auto}.lesson-module__Qe4ksq__mobileCatalog{display:none}.lesson-module__Qe4ksq__lessonLinks{margin:0;padding:0;list-style:none}.lesson-module__Qe4ksq__lessonLinks li{border-bottom:1px solid var(--line)}.lesson-module__Qe4ksq__lessonLinks a{color:#587178;grid-template-columns:2.2rem minmax(0,1fr) 1rem;align-items:center;gap:.65rem;min-height:3.65rem;padding:.65rem .8rem;text-decoration:none;transition:background .15s,color .15s;display:grid}.lesson-module__Qe4ksq__lessonLinks li[data-active] a{color:#fff;background:#071a2b}.lesson-module__Qe4ksq__lessonLinks li:not([data-active]) a:hover{color:var(--ink);background:#e7f3f1}.lesson-module__Qe4ksq__lessonLinks a>span{color:var(--cyan);font-family:SFMono-Regular,ui-monospace,monospace;font-size:.62rem;font-weight:750}.lesson-module__Qe4ksq__lessonLinks li[data-active] a>span{color:#69d8d0}.lesson-module__Qe4ksq__lessonLinks a strong{font-size:.73rem;font-weight:650;line-height:1.45}.lesson-module__Qe4ksq__lessonLinks a i{width:1rem;height:1rem;color:var(--cyan);border:1px solid #adc3c1;place-items:center;font-size:.6rem;font-style:normal;display:grid}.lesson-module__Qe4ksq__lessonLinks li[data-done] a i{border-color:var(--cyan);background:var(--cyan);color:#fff}.lesson-module__Qe4ksq__completeButton{border:1px solid var(--ink);width:calc(100% - 1.6rem);min-height:2.6rem;color:var(--ink);cursor:pointer;background:0 0;margin:.8rem;font-size:.73rem;font-weight:700}.lesson-module__Qe4ksq__completeButton[aria-pressed=true]{border-color:var(--cyan);background:var(--cyan);color:#fff}.lesson-module__Qe4ksq__lessonArticle{min-width:0;max-width:53rem}.lesson-module__Qe4ksq__breadcrumb{color:#748b8f;letter-spacing:.07em;align-items:center;gap:.6rem;margin-bottom:3rem;font-family:SFMono-Regular,ui-monospace,monospace;font-size:.63rem;display:flex}.lesson-module__Qe4ksq__breadcrumb a{color:var(--cyan);text-decoration:none}.lesson-module__Qe4ksq__lessonHeader{border-bottom:1px solid var(--line);padding-bottom:3.3rem}.lesson-module__Qe4ksq__lessonCode{color:var(--cyan);align-items:center;gap:1rem;font-family:SFMono-Regular,ui-monospace,monospace;display:flex}.lesson-module__Qe4ksq__lessonCode span{font-size:.75rem;font-weight:800}.lesson-module__Qe4ksq__lessonCode i{color:#688187;letter-spacing:.1em;text-transform:uppercase;font-size:.62rem;font-style:normal}.lesson-module__Qe4ksq__lessonHeader h1{letter-spacing:-.065em;max-width:48rem;margin:1.2rem 0 0;font-size:clamp(2.7rem,5.8vw,5.4rem);font-weight:790;line-height:1.04}.lesson-module__Qe4ksq__lessonHeader>p{color:#43616a;max-width:44rem;margin:1.6rem 0 0;font-size:1.02rem;line-height:1.9}.lesson-module__Qe4ksq__lessonHeader dl{border-top:1px solid var(--line);flex-wrap:wrap;gap:0;margin:2rem 0 0;display:flex}.lesson-module__Qe4ksq__lessonHeader dl>div{min-width:8.5rem;padding:.8rem 1rem 0 0}.lesson-module__Qe4ksq__lessonHeader dl>div+div{border-left:1px solid var(--line);padding-left:1rem}.lesson-module__Qe4ksq__lessonHeader dt{color:#829598;letter-spacing:.08em;font-family:SFMono-Regular,ui-monospace,monospace;font-size:.58rem}.lesson-module__Qe4ksq__lessonHeader dd{color:var(--ink);margin:.3rem 0 0;font-size:.78rem;font-weight:650}.lesson-module__Qe4ksq__objectives{background:var(--ink);color:#d9efed;border:1px solid #294b5d;margin:3.5rem 0;padding:1.6rem}.lesson-module__Qe4ksq__objectives>span{color:#67d4ce;letter-spacing:.12em;font-family:SFMono-Regular,ui-monospace,monospace;font-size:.61rem;font-weight:750}.lesson-module__Qe4ksq__objectives h2{color:#fff;margin:.75rem 0 0;font-size:1.25rem}.lesson-module__Qe4ksq__objectives ul{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem 2rem;margin:1.2rem 0 0;padding:0;list-style:none;display:grid}.lesson-module__Qe4ksq__objectives li{color:#a9c4c5;padding-left:1rem;font-size:.78rem;line-height:1.65;position:relative}.lesson-module__Qe4ksq__objectives li:before{content:"";background:#67d4ce;width:.38rem;height:.38rem;position:absolute;top:.58rem;left:0}.lesson-module__Qe4ksq__readingBody{background:#fbfefd94}.lesson-module__Qe4ksq__readingBody .prose{color:#2f4d58;max-width:none}.lesson-module__Qe4ksq__readingBody .prose>h2{border-top:2px solid var(--ink);border-bottom:1px solid var(--line);color:var(--ink);letter-spacing:-.035em;margin-top:3.5rem;padding:1.1rem 0 .6rem;font-size:clamp(1.55rem,2.5vw,2.1rem)}.lesson-module__Qe4ksq__readingBody .prose>h3{color:var(--ink);margin-top:2.4rem;font-size:1.18rem}:is(.lesson-module__Qe4ksq__readingBody .prose p,.lesson-module__Qe4ksq__readingBody .prose li){color:#35535e;font-size:.96rem;line-height:1.95}.lesson-module__Qe4ksq__readingBody .prose strong{color:var(--ink)}.lesson-module__Qe4ksq__readingBody .prose blockquote{color:var(--ink);background:#d8ece9;border:1px solid #8fbdb9;border-left:6px solid #087f8d;border-radius:0;padding:1.05rem 1.2rem;box-shadow:0 10px 24px -24px #071a2bb3}:is(.lesson-module__Qe4ksq__readingBody .prose blockquote p,.lesson-module__Qe4ksq__readingBody .prose blockquote li,.lesson-module__Qe4ksq__readingBody .prose blockquote strong,.lesson-module__Qe4ksq__readingBody .prose blockquote em){color:var(--ink)}.lesson-module__Qe4ksq__readingBody .prose blockquote p{font-weight:600}.lesson-module__Qe4ksq__readingBody .prose blockquote p:last-child{margin-bottom:0}.lesson-module__Qe4ksq__readingBody .prose pre{border-left-color:var(--cyan);background:#071a2b;border-radius:0}.lesson-module__Qe4ksq__readingBody .prose pre code{color:#d6eae9}.lesson-module__Qe4ksq__readingBody .prose pre:has(code.language-text){background:#e1efed;border-color:#8fbdb9 #8fbdb9 #8fbdb9 #087f8d}.lesson-module__Qe4ksq__readingBody .prose pre:has(code.language-text) code{color:var(--ink);font-weight:600}.lesson-module__Qe4ksq__readingBody .prose code:not(pre code){color:#064b58;background:#cfe7e4;border-color:#86b6b2;border-radius:0;font-weight:650}.lesson-module__Qe4ksq__readingBody .prose blockquote code:not(pre code){color:#063b46;background:#f5fbfa;border-color:#6fa5a1}.lesson-module__Qe4ksq__readingBody .prose table{border-radius:0}.lesson-module__Qe4ksq__lessonPager{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));margin-top:5rem;display:grid}.lesson-module__Qe4ksq__lessonPager>a{min-height:7rem;color:var(--ink);flex-direction:column;justify-content:center;padding:1rem 1.3rem;text-decoration:none;transition:background .15s;display:flex}.lesson-module__Qe4ksq__lessonPager>a+a{border-left:1px solid var(--line);text-align:right}.lesson-module__Qe4ksq__lessonPager>a:hover{background:#e3f0ee}.lesson-module__Qe4ksq__lessonPager a span{color:var(--cyan);font-family:SFMono-Regular,ui-monospace,monospace;font-size:.62rem}.lesson-module__Qe4ksq__lessonPager a strong{margin-top:.5rem;font-size:.86rem}.lesson-module__Qe4ksq__lessonPage a:focus-visible,.lesson-module__Qe4ksq__lessonPage button:focus-visible,.lesson-module__Qe4ksq__lessonPage summary:focus-visible{outline-offset:3px;outline:3px solid #0c9faf59}@media (max-width:960px){.lesson-module__Qe4ksq__lessonLayout{grid-template-columns:1fr;width:min(100% - 2rem,53rem);padding-top:1.5rem}.lesson-module__Qe4ksq__courseNav{max-height:none;position:static}.lesson-module__Qe4ksq__desktopCatalog{display:none}.lesson-module__Qe4ksq__mobileCatalog{border-bottom:1px solid var(--line);display:block}.lesson-module__Qe4ksq__mobileCatalog summary{color:#38565f;cursor:pointer;padding:.9rem;font-size:.78rem;font-weight:700}.lesson-module__Qe4ksq__mobileCatalog .lesson-module__Qe4ksq__lessonLinks{border-top:1px solid var(--line);max-height:23rem;overflow-y:auto}.lesson-module__Qe4ksq__completeButton{width:auto;min-width:11rem}}@media (max-width:560px){.lesson-module__Qe4ksq__lessonLayout{gap:2rem;width:calc(100% - 2rem);padding-bottom:5rem}.lesson-module__Qe4ksq__breadcrumb{margin-bottom:2rem}.lesson-module__Qe4ksq__lessonHeader h1{font-size:2.65rem}.lesson-module__Qe4ksq__lessonHeader>p{font-size:.92rem}.lesson-module__Qe4ksq__lessonHeader dl>div{min-width:50%}.lesson-module__Qe4ksq__lessonHeader dl>div:nth-child(3){border-left:0;margin-top:.75rem;padding-left:0}.lesson-module__Qe4ksq__objectives{margin:2.5rem 0;padding:1.25rem}.lesson-module__Qe4ksq__objectives ul{grid-template-columns:1fr}:is(.lesson-module__Qe4ksq__readingBody .prose p,.lesson-module__Qe4ksq__readingBody .prose li){font-size:.92rem}.lesson-module__Qe4ksq__lessonPager{grid-template-columns:1fr}.lesson-module__Qe4ksq__lessonPager>a+a{border-top:1px solid var(--line);text-align:left;border-left:0}}@media (prefers-reduced-motion:reduce){.lesson-module__Qe4ksq__lessonPage *{transition-duration:.01ms!important}}