:root{--bg: #fbfaf8;--ink: #121212;--ink-2: #3b3a37;--muted: #6b6862;--faint: #a6a39b;--rule: rgba(18, 18, 18, .1);--rule-soft: rgba(18, 18, 18, .06);--panel: #ffffff;--accent: #6d5cf0;--radius: 10px;--max: 1180px;--gutter: 24px;--nav-h: 60px;--font: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 16px)}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.5;font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}img,video{max-width:100%;display:block}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}button{font:inherit;color:inherit}h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}ul,ol{padding:0;list-style:none}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}.wrap-narrow{max-width:860px}.main{min-height:calc(100vh - var(--nav-h))}.section{padding:64px 0;border-top:1px solid var(--rule-soft)}.section-tight{padding:40px 0}.section-head{margin-bottom:32px}.section-head h2,.h2{font-size:28px;line-height:1.2;font-weight:300;letter-spacing:-.03em}.section-head p{margin-top:8px;color:var(--muted);max-width:560px}.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}.h2{margin-bottom:24px}.h2-rule{margin-top:48px;margin-bottom:0;padding-top:32px;border-top:1px solid var(--rule)}.eyebrow{font-size:13px;font-weight:500;letter-spacing:.02em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}.display{font-size:clamp(40px,6vw,72px);line-height:1.02;font-weight:300;letter-spacing:-.03em;max-width:14ch}.display-sm{font-size:clamp(34px,4.5vw,52px);max-width:18ch}.lede{margin-top:20px;font-size:20px;line-height:1.45;color:var(--ink-2);max-width:600px}.meta{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.prose{color:var(--ink-2);max-width:680px}.num{display:inline-block;font-size:13px;font-weight:500;font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--ink);padding-bottom:3px;border-bottom:1px solid var(--rule);line-height:1}.link-arrow{font-size:15px;font-weight:500;color:var(--accent);background:none;border:0;padding:0;cursor:pointer}.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 18px;border-radius:8px;font-size:15px;font-weight:500;border:1px solid transparent;white-space:nowrap}.btn:hover{text-decoration:none}.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink)}.btn-ink:hover{background:#2a2a2a}.btn-ghost{background:transparent;color:var(--ink);border-color:var(--rule)}.btn-ghost:hover{border-color:var(--ink)}.btn-sm{height:34px;padding:0 14px;font-size:14px}.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.nav{position:sticky;top:0;z-index:10;background:#fbfaf8eb;-webkit-backdrop-filter:saturate(140%) blur(8px);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--rule-soft)}.nav-inner{max-width:var(--max);margin:0 auto;padding:0 var(--gutter);height:var(--nav-h);display:flex;align-items:center;gap:32px}.brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-weight:500;font-size:16px;letter-spacing:-.01em}.brand:hover{text-decoration:none}.brand img{width:20px;height:20px}.brand-name sup{font-size:8px;vertical-align:super;margin-left:1px;font-weight:400}.brand-lab{color:var(--muted);font-weight:400}.nav-links{display:flex;gap:24px;margin-left:8px}.nav-links a{color:var(--ink-2);font-size:15px}.nav-links a:hover{color:var(--ink);text-decoration:none}.nav-links a.active{color:var(--accent)}.nav-actions{margin-left:auto;display:flex;align-items:center;gap:20px}.nav-open-app{color:var(--ink-2);font-size:15px}.nav-open-app:hover{color:var(--ink);text-decoration:none}.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--rule);border-radius:8px;height:34px;padding:0 12px;font-size:14px;cursor:pointer}.nav-menu{display:none}@media(max-width:860px){.nav-links,.nav-actions{display:none}.nav-toggle{display:inline-flex;align-items:center}.nav-menu{display:flex;flex-direction:column;border-top:1px solid var(--rule-soft);padding:8px var(--gutter) 16px}.nav-menu[hidden]{display:none}.nav-menu a{padding:12px 0;color:var(--ink);font-size:17px;border-bottom:1px solid var(--rule-soft)}.nav-menu a:last-child{border-bottom:0}}.hero{padding:96px 0 72px}.page-head,.lesson-head{padding:64px 0 24px}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.lesson-card{background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius)}.lesson-card-link{display:flex;flex-direction:column;height:100%;padding:24px;color:var(--ink)}.lesson-card-link:hover{text-decoration:none}.lesson-card:hover{border-color:var(--ink)}.lesson-card-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:20px}.lesson-card-title{font-size:22px;line-height:1.2;font-weight:400;letter-spacing:-.02em}.lesson-card-summary{margin-top:10px;color:var(--muted);font-size:16px;flex:1}.lesson-card .link-arrow{margin-top:24px}.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;border-top:1px solid var(--rule)}.audience{padding-top:20px}.audience h3{font-size:16px;font-weight:500;margin-bottom:8px}.audience p{color:var(--muted);font-size:16px}@media(max-width:900px){.audience-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:520px){.audience-grid{grid-template-columns:1fr;gap:0}.audience{padding:20px 0;border-bottom:1px solid var(--rule-soft)}}.film-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.film-card{background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius);overflow:hidden}.film-card:hover{border-color:var(--ink)}.film-card.is-active{grid-column:1 / -1}.film-card.is-active:hover{border-color:var(--rule)}.film-card-inner{display:block;width:100%;height:100%;text-align:left;color:var(--ink);background:none;border:0;padding:0;cursor:pointer}.film-card-inner:hover{text-decoration:none}.film-card.is-active .film-card-inner{cursor:default}.film-poster{position:relative;aspect-ratio:16 / 9;background:#f1efea;border-bottom:1px solid var(--rule-soft);overflow:hidden}.film-poster img{width:100%;height:100%;object-fit:cover}.film-poster-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;text-align:center;color:var(--muted);font-size:15px}.film-duration{position:absolute;right:10px;bottom:10px;font-size:12px;font-variant-numeric:tabular-nums;background:var(--panel);border:1px solid var(--rule);border-radius:4px;padding:2px 6px;color:var(--ink-2)}.film-text{padding:18px 20px 20px}.film-text h3{font-size:18px;font-weight:500;letter-spacing:-.01em;line-height:1.25}.film-text p{margin-top:6px;color:var(--muted);font-size:15px}.film-player{padding:16px 16px 0}.film-close{display:block;margin:12px 0 0}.player{background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius);overflow:hidden}.player-bar{height:28px;display:flex;align-items:center;gap:6px;padding:0 12px;border-bottom:1px solid var(--rule-soft)}.player-bar span{width:9px;height:9px;border-radius:50%;border:1px solid var(--rule)}.player-screen{aspect-ratio:16 / 9;background:#0d0d0d}.player-screen video{width:100%;height:100%;background:#0d0d0d}.player-fallback{position:relative;width:100%;height:100%}.player-fallback img{width:100%;height:100%;object-fit:cover}.player-fallback .player-soon{position:absolute;left:12px;bottom:12px}.player-empty{width:100%;height:100%;background:var(--panel);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:24px;text-align:center}.player-empty-title{font-size:22px;font-weight:300;letter-spacing:-.02em}.player-soon{font-size:12px;font-weight:500;letter-spacing:.02em;text-transform:uppercase;color:var(--muted);background:var(--panel);border:1px solid var(--rule);border-radius:4px;padding:3px 7px}.player-markers{display:none}.chapters{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:0 24px;border-top:1px solid var(--rule)}.chapters li{border-bottom:1px solid var(--rule-soft)}.chapters button{width:100%;display:flex;gap:12px;align-items:baseline;padding:10px 0;background:none;border:0;text-align:left;cursor:pointer;font-size:15px;color:var(--ink-2)}.chapters button:hover .chapter-label{color:var(--ink)}.chapter-time{font-size:13px;font-variant-numeric:tabular-nums;color:var(--faint);min-width:34px}.chapters li.is-current .chapter-label,.chapters li.is-current .chapter-time{color:var(--accent)}.steps{border-top:1px solid var(--rule)}.step{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:24px 0;border-bottom:1px solid var(--rule-soft)}.step h3{font-size:19px;font-weight:500;letter-spacing:-.01em;margin-bottom:6px}.step p{color:var(--ink-2);max-width:620px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px}@media(max-width:720px){.two-col{grid-template-columns:1fr;gap:40px}}.bullets li{position:relative;padding:10px 0 10px 20px;border-bottom:1px solid var(--rule-soft);color:var(--ink-2)}.bullets li:before{content:"";position:absolute;left:2px;top:21px;width:8px;height:1px;background:var(--ink)}.checklist li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--rule-soft);color:var(--ink-2)}.checklist input{appearance:none;flex:none;width:18px;height:18px;margin:4px 0 0;border:1px solid var(--rule);border-radius:4px;background:var(--panel);cursor:pointer;position:relative}.checklist input:checked{border-color:var(--ink);background:var(--ink)}.checklist input:checked:after{content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;border:solid #fff;border-width:0 1.5px 1.5px 0;transform:rotate(45deg)}.checklist input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.checklist label{cursor:pointer}.checklist li.is-done label{color:var(--faint);text-decoration:line-through;text-decoration-color:var(--rule)}.lesson-nav{border-top:1px solid var(--rule);padding:32px 0 64px}.lesson-nav-inner{display:flex;justify-content:space-between;gap:24px}.lesson-nav-link{display:flex;flex-direction:column;gap:4px;color:var(--ink);font-size:18px;font-weight:400;letter-spacing:-.01em}.lesson-nav-link:hover{text-decoration:none;color:var(--accent)}.lesson-nav-next{text-align:right;margin-left:auto}.explainer{padding-bottom:0;border-top:0}.pillars{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;border-top:1px solid var(--rule);margin-bottom:48px}.pillar{padding:16px 0;border-bottom:1px solid var(--rule-soft)}.pillar dt{font-weight:500;margin-bottom:4px}.pillar dd{color:var(--ink-2);font-size:16px}@media(max-width:640px){.pillars{grid-template-columns:1fr}}.table{width:100%;border-collapse:collapse;margin-bottom:48px;font-size:16px}.table th,.table td{text-align:left;vertical-align:top;padding:12px 16px 12px 0;border-bottom:1px solid var(--rule-soft)}.table th{font-size:13px;font-weight:500;color:var(--muted);border-bottom:1px solid var(--rule)}.table td{color:var(--ink-2)}.table td:nth-child(2){color:var(--ink);font-weight:500;white-space:nowrap}.tnum{font-variant-numeric:tabular-nums;white-space:nowrap}.glossary{border-top:1px solid var(--rule)}.glossary-item{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--rule-soft)}.glossary-item dt{font-weight:500}.glossary-item dd{color:var(--ink-2)}@media(max-width:640px){.glossary-item{grid-template-columns:1fr;gap:6px}}.band{padding:80px 0}.band-title{font-size:clamp(28px,4vw,40px);line-height:1.15;font-weight:300;letter-spacing:-.03em;max-width:16ch}.footer{border-top:1px solid var(--rule);padding:40px 0 48px}.footer-inner{max-width:var(--max);margin:0 auto;padding:0 var(--gutter);display:flex;align-items:flex-start;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer-tagline{margin-top:10px;color:var(--muted);font-size:15px}.footer-links{display:flex;gap:24px;flex-wrap:wrap}.footer-links a{color:var(--ink-2);font-size:15px}.footer-copy{width:100%;margin-top:8px;color:var(--faint);font-size:13px}@media(max-width:640px){:root{--gutter: 16px}.hero{padding:56px 0 48px}.section{padding:48px 0}.lede{font-size:18px}.step{grid-template-columns:36px 1fr;gap:12px}.lesson-nav-inner{flex-direction:column}.lesson-nav-next{text-align:left;margin-left:0}.table th:first-child,.table td:first-child{width:72px}}.step .num{align-self:start;justify-self:start}.lesson-head .meta,.page-head .meta{margin-top:12px}.explainer+.section{border-top:0;padding-top:24px}.lesson-nav{padding:40px 0 72px}.lesson-nav-link{min-width:260px;padding:18px 22px;border:1px solid var(--rule);border-radius:var(--radius);background:var(--panel);font-size:19px;font-weight:500}.lesson-nav-link .meta{font-size:12px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.lesson-nav-link:hover{border-color:var(--ink);color:var(--ink)}.lesson-nav-next{background:var(--ink);border-color:var(--ink);color:#fff;min-width:320px}.lesson-nav-next .meta{color:#ffffffb8}.lesson-nav-next:hover{background:#2a2a2a;color:#fff}@media(max-width:720px){.lesson-nav-link,.lesson-nav-next{min-width:0;width:100%}}:root{--accent: var(--ink)}a:hover{text-decoration:underline}.eyebrow,.section-eyebrow{color:var(--muted);font-weight:600}.link-arrow,.nav-links a.active,.chapters li.is-current .chapter-label,.chapters li.is-current .chapter-time{color:var(--ink);font-weight:600}.checklist input:focus-visible{outline:2px solid var(--ink)}.mdp-intro{padding-bottom:8px}.mdp-statement{margin:10px 0 0;font-size:clamp(32px,3.6vw,50px);font-weight:300;letter-spacing:-.03em;line-height:1.08;color:var(--ink);white-space:nowrap}@media(max-width:760px){.mdp-statement{white-space:normal;text-wrap:balance}}.mdp-deck{margin:22px 0 0;max-width:62ch;font-size:19px;line-height:1.5;color:var(--ink-2)}.mdp-letters{list-style:none;margin:44px 0 0;padding:0;display:grid;grid-template-columns:repeat(8,1fr);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.mdp-letters li{display:flex;flex-direction:column;gap:10px;padding:22px 14px 20px;border-left:1px solid var(--rule-soft)}.mdp-letters li:first-child{border-left:0;padding-left:0}.mdp-letter{font-size:clamp(44px,5vw,72px);font-weight:300;line-height:1;letter-spacing:-.04em;color:var(--ink)}.mdp-word{font-size:13px;font-weight:500;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}.mdp-cells{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:40px}.mdp-cell .cell-label{display:block;font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--rule)}.mdp-lead{margin:18px 0 0;font-size:24px;font-weight:500;letter-spacing:-.02em;line-height:1.25;color:var(--ink)}.mdp-body{margin:14px 0 0;font-size:17px;line-height:1.5;color:var(--ink-2)}.mdp-roles{list-style:none;margin:6px 0 0;padding:0}.mdp-roles li{display:flex;flex-direction:column;gap:2px;padding:14px 0;border-bottom:1px solid var(--rule-soft)}.mdp-roles strong{font-weight:600;font-size:17px}.mdp-roles span{font-size:15px;color:var(--muted)}.mdp-brainess{margin:40px 0 0;padding:20px 24px;border:1px solid var(--rule);border-radius:var(--radius);background:var(--panel);font-size:18px;font-weight:500;color:var(--ink)}@media(max-width:860px){.mdp-letters{grid-template-columns:repeat(4,1fr)}.mdp-letters li:nth-child(5){border-left:0;padding-left:0}.mdp-letters li:nth-child(n+5){border-top:1px solid var(--rule-soft)}.mdp-cells{grid-template-columns:1fr;gap:32px}}.mdp-short{margin-top:20px}
