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(min-width:1200px){:root{--gutter:48px}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:88px}body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-feature-settings:"kern", "liga";-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:1rem;line-height:1.55}img,svg,video{max-width:100%;display:block}a{color:inherit}button,input,select,textarea{font:inherit;color:inherit}h1,h2,h3,h4{margin:0;font-weight:600}p{margin:0}::selection{background:var(--hi);color:var(--ink)}:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:3px}.skip{z-index:100;background:var(--ink);color:var(--paper);border-radius:var(--radius);padding:10px 14px;font-weight:500;text-decoration:none;position:absolute;top:-48px;left:12px}.skip:focus{top:12px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.wrap{width:100%;max-width:calc(var(--maxw) + 2 * var(--gutter));padding:0 var(--gutter);margin:0 auto}.wrap-narrow{max-width:calc(760px + 2 * var(--gutter))}.serif{font-family:var(--serif)}.mono{font-family:var(--mono);font-feature-settings:"tnum", "zero"}.hand{font-family:var(--hand)}.eyebrow{font-family:var(--sans);font-size:var(--fs-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);font-weight:600}.display{font-family:var(--serif);font-size:var(--fs-display);letter-spacing:-.022em;text-wrap:balance;font-variation-settings:"opsz" 72;font-weight:500;line-height:1.02}.h1{font-family:var(--serif);font-size:var(--fs-h1);letter-spacing:-.018em;text-wrap:balance;font-variation-settings:"opsz" 72;font-weight:500;line-height:1.08}.h2{font-family:var(--serif);font-size:var(--fs-h2);letter-spacing:-.012em;text-wrap:balance;font-variation-settings:"opsz" 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img{width:100%;height:auto}.tape{background:#f2d25c99;width:96px;height:26px;position:absolute;top:-12px;left:50%;transform:translate(-50%)rotate(-4deg);box-shadow:0 1px 2px #0000000f}.hero-sheet-meta{gap:6px;margin-top:22px;display:grid}.hero-sheet-meta a{text-decoration:none}.hero-sheet-meta a:hover .h3{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px}.section{padding:96px 0 0}.section-head{gap:14px;max-width:46rem;margin-bottom:44px;display:grid}.section-head .h2{margin-top:2px}@media (max-width:640px){.section-rule .margin-note{display:none}}.section-rule{border-top:1px solid var(--rule);justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:36px;padding-top:18px;display:flex}.anatomy{grid-template-columns:minmax(0,1fr);gap:28px;margin:0;padding:0;list-style:none;display:grid;position:relative}@media 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.count{font-family:var(--mono);color:var(--ink-2);font-size:.8125rem}.toc-system-row:hover .name{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px}.toc-lessons{gap:2px;margin:10px 0 0;padding:0;list-style:none;display:grid}.toc-lessons a{color:var(--ink-2);border-radius:4px;grid-template-columns:3.2em 1fr auto;gap:8px;padding:7px 0;font-size:.9375rem;text-decoration:none;display:grid}.toc-lessons a:hover{color:var(--ink)}.toc-lessons a:hover .tt{text-underline-offset:3px;text-decoration:underline}.toc-lessons .ep{font-family:var(--mono);color:var(--graphite);padding-top:1px;font-size:.8125rem}.toc-lessons .dur{font-family:var(--mono);color:var(--graphite);font-size:.8125rem}.toc-planned{color:var(--ink-2);align-items:baseline;gap:10px;margin-top:28px;font-size:.9375rem;display:flex}.cards{grid-template-columns:1fr;gap:40px 28px;margin:0;padding:0;list-style:none;display:grid}@media (min-width:640px){.cards{grid-template-columns:1fr 1fr}}@media (min-width:1000px){.cards{grid-template-columns:1fr 1fr 1fr}}.card{align-content:start;gap:14px;display:grid;position:relative}.card-thumb{box-shadow:var(--shadow-sheet);transition:transform .16s var(--ease), box-shadow .16s var(--ease);background:#fff;padding:6px;position:relative}.card-thumb img{aspect-ratio:16/9;object-fit:cover;width:100%;height:auto}.card-thumb .dur{color:var(--paper);font-family:var(--mono);background:#1f2a33e6;border-radius:3px;padding:3px 7px;font-size:.75rem;position:absolute;bottom:12px;right:12px}.card:hover .card-thumb{transform:translateY(-2px);box-shadow:0 1px #1f2a330f,0 16px 30px -14px #3c281457}.card-meta{color:var(--ink-2);flex-wrap:wrap;align-items:center;gap:8px 10px;font-size:.8125rem;display:flex}.card-title{font-family:var(--serif);text-wrap:balance;font-variation-settings:"opsz" 24;font-size:1.25rem;font-weight:500;line-height:1.28}.card-title a{text-decoration:none}.card-title a:after{content:"";position:absolute;inset:0}.card:hover .card-title 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