.lesson-breadcrumb{margin:0 5%;padding-top:29px;display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--muted)}.lesson-breadcrumb a{min-height:35px;display:inline-flex;align-items:center}.lesson-breadcrumb>span{align-self:center}.lesson-hero{padding:25px 5% 49px;max-width:1250px}.lesson-hero h1{font-size:clamp(34px,4.15vw,59px);line-height:1.38;max-width:1100px;letter-spacing:-.04em}.lesson-hero>p:not(.h20-kicker):not(.lesson-identity){font-size:19px;line-height:1.95;color:var(--muted);max-width:930px;margin:25px 0}.lesson-meta{display:flex;flex-wrap:wrap;gap:12px 25px;color:var(--muted);font-size:12px}.lesson-identity{font-size:12px;line-height:1.85;margin:24px 0 0;max-width:930px;color:var(--muted)}.lesson-layout{margin:0 5%;padding:45px 0 65px;border-top:1px solid var(--line);display:grid;grid-template-columns:225px minmax(0,800px);gap:7%;justify-content:space-between}.lesson-desktop-toc{align-self:start;position:sticky;top:28px;max-height:calc(100vh - 55px);overflow:auto;padding-right:15px}.lesson-desktop-toc strong{font-size:12px;display:block;margin-bottom:18px}.lesson-desktop-toc a{font-size:12px;line-height:1.7;min-height:44px;display:flex;align-items:start;gap:10px;padding:9px 0;color:var(--muted)}.lesson-desktop-toc a>span{font-size:10px;padding-top:2px}.lesson-prose{min-width:0;font-size:17px;line-height:2}.lesson-prose>section{margin-bottom:49px;scroll-margin-top:28px}.lesson-step{font-size:10px;letter-spacing:.1em;color:var(--accent);display:block;margin-bottom:16px}.lesson-prose h2{font-size:29px;line-height:1.5;letter-spacing:-.025em;margin-bottom:23px}.lesson-prose p{font-size:17px;line-height:2.05;margin-bottom:23px;overflow-wrap:anywhere}.lesson-check{padding:28px 31px;background:var(--panel);border:1px solid var(--line);margin-bottom:44px}.lesson-check h2{font-size:23px;margin:0 0 20px}.lesson-check label{display:flex;align-items:start;gap:12px;margin:13px 0;font-size:15px;line-height:1.8}.lesson-check input{width:20px;height:20px;margin-top:4px;flex-shrink:0;accent-color:var(--accent)}.lesson-check .result{border-top:1px solid var(--line);display:flex;align-items:center;gap:20px;justify-content:space-between;padding-top:16px;margin-top:19px}.lesson-check output{font-size:13px}.lesson-check .reset{border:0;border-bottom:1px solid var(--ink);background:transparent;color:var(--ink);font:inherit;font-size:13px;min-height:44px;cursor:pointer}.lesson-check>p{font-size:12px;color:var(--muted);margin:15px 0 0}.registration-shot{padding:17px;border:1px solid var(--line);margin:31px 0 40px;background:var(--panel)}.registration-shot>a{display:block;background:#fff;color:#111;text-decoration:none}.registration-shot img{display:block;width:100%;height:auto}.registration-shot>a>span{display:flex;justify-content:center;align-items:center;min-height:44px;font-size:12px;border-top:1px solid #ddd}.registration-shot figcaption{font-size:13px;line-height:1.9;color:var(--muted);padding-top:17px}.registration-shot figcaption>a{text-decoration:underline;text-underline-offset:3px}.lesson-faq details{padding:14px 0;border-bottom:1px solid var(--line)}.lesson-faq summary{cursor:pointer;font-size:17px;line-height:1.7;min-height:44px}.lesson-faq details p{margin:14px 0 0;font-size:16px}.lesson-prose .h20-sources{margin:0 0 40px;padding:28px 0}.lesson-prose .h20-sources h2{font-size:23px}.lesson-prose .h20-sources p{font-size:13px!important;line-height:1.9}.lesson-next{padding:30px;background:var(--panel);border:1px solid var(--line)}.lesson-next h2{font-size:26px}.lesson-next p{font-size:16px}.lesson-next p:last-child{font-size:13px;margin-top:18px;margin-bottom:0}.lesson-next p:last-child a{text-decoration:underline}.lesson-related h2{font-size:26px}.lesson-related>a{display:block;font-size:16px;line-height:1.8;padding:15px 0;border-bottom:1px solid var(--line)}.lesson-mobile-toc{display:none}.lesson20 .footer p{font-size:13px}
@media(max-width:1000px){.lesson-layout{grid-template-columns:180px minmax(0,1fr);gap:5%}.lesson-desktop-toc a{font-size:11px}.lesson-hero h1{font-size:44px}.lesson-prose h2{font-size:27px}}
@media(max-width:700px){.lesson-breadcrumb{margin:0 6%;padding-top:19px;font-size:11px}.lesson-hero{padding:20px 6% 32px}.lesson-hero .h20-kicker{font-size:10px!important}.lesson-hero h1{font-size:32px;line-height:1.45;letter-spacing:-.035em}.lesson-hero>p:not(.h20-kicker):not(.lesson-identity){font-size:17px;margin:24px 0}.lesson-meta{gap:7px 17px;font-size:11px}.lesson-identity{font-size:12px;margin-top:20px}.lesson-layout{display:block;margin:0 6%;padding:28px 0 35px}.lesson-desktop-toc{display:none}.lesson-prose p{font-size:16px;line-height:2.05;margin-bottom:21px}.lesson-prose h2{font-size:25px;line-height:1.55;margin-bottom:20px}.lesson-prose>section{margin-bottom:35px}.lesson-mobile-toc{display:block;border:1px solid var(--line);padding:0 20px;margin-bottom:28px;background:var(--panel)}.lesson-mobile-toc summary{font-size:15px;cursor:pointer;min-height:54px;align-content:center;padding:13px 0}.lesson-mobile-toc nav{border-top:1px solid var(--line);padding:10px 0}.lesson-mobile-toc a{font-size:13px;line-height:1.7;display:flex;gap:10px;align-items:center;min-height:44px;padding:8px 0}.lesson-mobile-toc a>span{font-size:10px;color:var(--muted)}.lesson-check{padding:23px 20px;margin-bottom:33px}.lesson-check h2{font-size:22px}.lesson-check label{font-size:14px;gap:10px}.lesson-check .result{display:flex;flex-wrap:wrap;gap:7px}.lesson-check>p{font-size:12px}.lesson-step{font-size:10px;margin-bottom:14px}.registration-shot{padding:10px;margin:28px 0 31px}.registration-shot figcaption{font-size:13px;line-height:1.9;padding:15px 4px 5px}.lesson-faq summary{font-size:16px}.lesson-next{padding:23px 20px}.lesson-next .button{font-size:13px;padding-inline:16px;gap:12px;width:100%}.lesson-prose .h20-sources{padding-top:25px}.lesson-related>a{font-size:16px;line-height:1.9}.lesson20 .footer{padding:35px 6%}.lesson20 .footer nav{flex-wrap:wrap}}
@media print{.lesson-desktop-toc,.lesson-mobile-toc,.lesson20 .header,.lesson20 .footer,.lesson-check,.lesson-next{display:none}.lesson-layout{display:block}.lesson-prose,.lesson-prose p{font-size:12pt}.lesson-hero h1{font-size:25pt}}