.lesson-hero{max-width:1000px;padding:32px 0 clamp(56px,6vw,80px)}.lesson-back{font-size:14px;color:var(--text-3);margin-bottom:clamp(32px,4vw,48px)}.lesson-back:hover{color:var(--text)}.lesson-hero>.eyebrow{color:var(--amber-text)}.lesson-hero h1{font-size:clamp(56px,8vw,112px);line-height:.98;margin-top:22px;letter-spacing:-.06em}.lesson-intro{font-size:clamp(17px,1.6vw,20px);color:var(--text-2);line-height:1.6;margin-top:28px;max-width:640px}.lesson-meta{display:flex;flex-wrap:wrap;gap:8px 24px;color:var(--text-3);font:500 12px/1.5 var(--font-mono);letter-spacing:.04em;margin-top:24px}.lesson-hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px 32px;margin-top:36px}.lesson-capture{max-width:1140px;margin-bottom:80px}.lesson-capture figure{margin:0}.lesson-capture figcaption{font-size:13px;color:var(--text-3);margin-top:16px}.lesson-body{max-width:1000px;display:grid;grid-template-columns:200px minmax(0,1fr);grid-gap:72px;gap:72px;padding-bottom:var(--section)}.lesson-outline{align-self:flex-start;position:-webkit-sticky;position:sticky;top:88px}.lesson-outline ol{list-style:none;padding:0;margin:18px 0 24px}.lesson-outline li{margin:0}.lesson-outline li a{display:flex;align-items:flex-start;gap:12px;padding:10px 0;font-size:14px;color:var(--text-2);line-height:1.5}.lesson-outline li a:hover{color:var(--text)}.lesson-outline li span{font:500 12px/1.75 var(--font-mono);color:var(--text-3)}.lesson-outline>.text-link{font-size:14px;padding-top:12px;border-top:1px solid var(--line);width:100%}.lesson-content{min-width:0}.lesson-before{border-radius:16px;padding:24px 26px;margin-bottom:64px;background:var(--surface);box-shadow:0 0 0 1px var(--line)}.lesson-content p{font-size:17px;line-height:1.75;color:var(--text-2);margin-top:20px}.lesson-content .eyebrow{margin:0}.lesson-before p:not(.eyebrow){font-size:15px;line-height:1.7;margin-top:14px}.lesson-content p a{color:var(--text);text-decoration:underline;text-underline-offset:4px;-webkit-text-decoration-color:var(--line-strong);text-decoration-color:var(--line-strong)}.lesson-content p a:hover{-webkit-text-decoration-color:currentColor;text-decoration-color:currentColor}.lesson-content section{padding-bottom:64px;margin-bottom:64px;border-bottom:1px solid var(--line);scroll-margin-top:88px}.lesson-content .lesson-chapter-label{font:500 12px/1.4 var(--font-mono);color:var(--amber-text);letter-spacing:.1em;margin:0}.lesson-content h2{font-size:clamp(32px,3.4vw,48px);line-height:1.08;letter-spacing:-.05em;margin-top:20px}.lesson-content em{font-style:normal;color:var(--text)}.lesson-content code{font:13px var(--font-mono);padding:2px 6px;border-radius:5px;color:var(--text);background:var(--surface-sunken)}.lesson-brief{margin-top:32px;padding:28px;border-radius:16px;background:var(--surface);box-shadow:0 0 0 1px var(--line)}.lesson-brief h3{font-size:34px;margin-top:12px}.lesson-brief p{font-size:16px;max-width:520px;margin-top:10px}.lesson-brief>div{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.lesson-brief>div span{font-size:13px;border:1px solid var(--line-strong);color:var(--text-2);padding:5px 10px;border-radius:99px}.lesson-content .lesson-check{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text-2);margin-top:28px}.lesson-check>span{color:var(--text);padding-top:1px}.lesson-prompt{background:var(--surface);border-radius:16px;box-shadow:0 0 0 1px var(--line);margin-top:26px;padding:20px 22px 10px}.lesson-prompt-heading{display:flex;justify-content:space-between;gap:14px;align-items:center;font:500 12px/1.4 var(--font-mono);letter-spacing:.04em;color:var(--text-3)}.lesson-prompt-heading button{display:inline-flex;align-items:center;min-height:36px;background:transparent;border:1px solid var(--line-strong);border-radius:99px;padding:0 14px;font:500 13px var(--font-sans);color:var(--text);white-space:nowrap}.lesson-prompt-heading button:hover{border-color:var(--text-3)}.lesson-prompt-heading button span{margin-left:6px}.lesson-prompt>p{font:14px/1.75 var(--font-mono);color:var(--text);white-space:pre-wrap;-webkit-user-select:text;-moz-user-select:text;user-select:text;margin-top:14px}.lesson-prompt-status{display:block;min-height:24px;padding-top:8px;font-size:13px;line-height:1.6;color:var(--text-2)}.lesson-resource{border-radius:16px;box-shadow:0 0 0 1px var(--line);padding:24px;margin-top:24px;display:flex;flex-wrap:wrap;gap:4px 28px}.lesson-resource>div{width:100%}.lesson-resource p:not(.eyebrow){font-size:15px;margin-top:10px}.lesson-review-list{list-style:none;padding:0;margin-top:28px;counter-reset:review}.lesson-review-list li{counter-increment:review;padding:18px 0 18px 40px;border-top:1px solid var(--line);position:relative}.lesson-review-list li:before{content:"0" counter(review);position:absolute;left:0;top:22px;font:500 12px var(--font-mono);color:var(--text-3)}.lesson-review-list strong{font-size:16px;font-weight:500;line-height:1.6;display:block}.lesson-review-list span{display:block;font-size:15px;color:var(--text-2);line-height:1.65;margin-top:4px}.lesson-finish .eyebrow{color:var(--amber-text)}.lesson-finish h2{font-size:clamp(36px,4vw,52px)}.lesson-finish>div{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;margin-top:32px}@media(max-width:1000px){.lesson-body{gap:40px;grid-template-columns:170px minmax(0,1fr)}}@media(max-width:700px){.lesson-hero{padding:20px 0 48px}.lesson-hero h1{font-size:clamp(52px,14vw,80px)}.lesson-hero-actions{align-items:flex-start;flex-direction:column;gap:12px}.lesson-capture{margin-bottom:40px}.lesson-body{display:block}.lesson-outline{position:static;margin-bottom:44px}.lesson-outline ol{display:grid;grid-template-columns:1fr 1fr;grid-gap:0 18px;gap:0 18px;margin:12px 0 16px}.lesson-outline>.text-link{width:auto;border-top:0;padding-top:0}.lesson-before{padding:20px;margin-bottom:44px}.lesson-content p{font-size:16px}.lesson-content section{padding-bottom:44px;margin-bottom:44px}.lesson-brief{padding:22px}.lesson-prompt{padding:18px 18px 8px}.lesson-prompt>p{font-size:13px}.lesson-finish>div{align-items:flex-start;flex-direction:column}.lesson-resource{padding:20px}}.native-capture-frame{position:relative;width:100%;aspect-ratio:1448/1086;isolation:isolate}.native-capture-frame__screen{position:absolute;left:10.0829%;top:11.4171%;width:79.9724%;height:77.8085%;padding:1%;background:#000;z-index:0;display:grid;place-items:center}.native-capture-frame .native-capture-frame__capture{display:block;width:100%;height:100%;min-width:0;min-height:0;object-fit:contain;object-position:center}.native-capture-frame .native-capture-frame__device{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:contain;pointer-events:none;z-index:1}