:root{--bg:#F3F4F8;--surface:#FFFFFF;--surface-2:#E9EBF2;--ink:#12131A;--muted:#4A4E5C;--line:#D9DCE6;--ember:#D02E18;--ember-text:#B8270F;--ember-bright:#FF4B2B;--good:#1B7A45;--good-text:#146838;--stage:#16132C;--stage-2:#221D44;--code-bg:#16132C;--code-ink:#E9E7FF;--code-key:#FF8A6E;--code-str:#9EE6B8;--code-fn:#B9A8FF;--code-com:#8C88B3;--chrome:#FFFFFF;--main-start:#FFF1EC;--main-mid:#F6F2FA;--main-end:#E4E8F4;--display:"Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif;--body:"Instrument Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono:"JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0E0F15;--surface:#171922;--surface-2:#1F2230;--ink:#EDEEF3;--muted:#A8ACBC;--line:#2B2E3C;--ember:#D02E18;--ember-text:#FF7B62;--good:#3DDB86;--good-text:#B6F5D0;--code-bg:#1B1838;color-scheme:dark;--chrome:#101118;--main-start:#3C2432;--main-mid:#2A243C;--main-end:#1C2740}}:root[data-theme=dark]{--bg:#0E0F15;--surface:#171922;--surface-2:#1F2230;--ink:#EDEEF3;--muted:#A8ACBC;--line:#2B2E3C;--ember:#D02E18;--ember-text:#FF7B62;--good:#3DDB86;--good-text:#B6F5D0;--code-bg:#1B1838;color-scheme:dark;--chrome:#101118;--main-start:#3C2432;--main-mid:#2A243C;--main-end:#1C2740}html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 80px);scroll-behavior:smooth}.site{background:var(--chrome);color:var(--ink);font:400 1.0625rem/1.6 var(--body);min-height:100vh;-webkit-font-smoothing:antialiased}.site:before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--chrome)}.site main{background:radial-gradient(90rem 34rem at 0% -10rem,color-mix(in srgb,var(--ember) 24%,transparent),transparent 68%),linear-gradient(180deg,var(--main-start) 0%,var(--main-mid) 46%,var(--main-end) 100%)}.site img,.site svg,.site video{max-width:100%}.site a{color:inherit}.site :focus-visible{outline:3px solid var(--ember-bright);outline-offset:3px;border-radius:6px}.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(1rem,4vw,2.5rem)}.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--chrome);border-bottom:1px solid color-mix(in srgb,var(--ink) 50%,transparent)}.top .wrap{display:flex;align-items:center;gap:2rem;min-height:72px;position:relative}.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;font:800 1.3rem/1 var(--display);letter-spacing:-.02em}.brand-lockup{display:contents}.brand svg{width:38px;height:38px;flex:none}.brand b{color:var(--ember-text);font-weight:800}.nav{display:flex;gap:1.6rem;margin-left:auto}.nav a{text-decoration:none;font-weight:600;font-size:.98rem;color:var(--muted);padding:.5rem 0}.nav a:hover,.nav a[aria-current=page]{color:var(--ink)}.menu-btn{display:none;margin-left:auto;width:46px;height:46px;padding:0;border-radius:12px;border:0;background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line);cursor:pointer;align-items:center;justify-content:center}.menu-btn:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}.menu-icon{position:relative;display:block;width:18px;height:2px;background:currentColor;border-radius:2px}.menu-icon:before,.menu-icon:after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .15s ease,top .15s ease}.menu-icon:before{top:-6px}.menu-icon:after{top:6px}.menu-icon.is-open{background:transparent}.menu-icon.is-open:before{top:0;transform:rotate(45deg)}.menu-icon.is-open:after{top:0;transform:rotate(-45deg)}@media(max-width:900px){.nav{display:none;position:absolute;top:100%;left:0;right:0;margin:0;flex-direction:column;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:.4rem 1rem;box-shadow:0 20px 40px -24px #16132c73}.nav.is-open{display:flex}.nav a{padding:.8rem 0;border-top:1px solid var(--line)}.nav a:first-child{border-top:0}.menu-btn{display:inline-flex}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:46px;padding:.7rem 1.25rem;border-radius:12px;border:0;font:700 1rem/1 var(--body);text-decoration:none;cursor:pointer;transition:transform .15s ease,background .15s ease}.btn:active{transform:translateY(1px)}.btn-hot{background:var(--ember);color:#fff}.btn-hot:hover{background:#b8270f}.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}.course.feature .btn-hot{background:#fff;color:#8e1d0b}.course.feature .btn-hot:hover{background:#ffe4de}.hero{padding:clamp(2.5rem,6vw,5rem) 0 clamp(1.5rem,3vw,2.25rem)}.hero-break{position:relative;display:flex;align-items:center;height:4.5rem}.hero-break:before{content:"";position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--line) 70%,var(--ember)) 12%,var(--ember) 50%,color-mix(in srgb,var(--line) 70%,var(--ember)) 88%,transparent)}.hero-break:after{content:"";position:relative;width:9px;height:9px;margin:0 auto;border-radius:50%;background:var(--ember);box-shadow:0 0 0 7px color-mix(in srgb,var(--ember) 16%,transparent)}.hero-break+.block{border-top:0;padding-top:clamp(1.25rem,3vw,2rem)}.hero .wrap{display:flex;flex-direction:column;align-items:center;gap:clamp(2rem,4vw,3.2rem)}.hero-copy{width:100%;text-align:center}.hero-copy h1{max-width:none;margin-left:auto;margin-right:auto}.hero .lede{max-width:42rem;margin-left:auto;margin-right:auto}.hero .ember{color:var(--ember-text)}.hero-ctas{justify-content:center}.hero .vid{align-self:stretch}.site h1{font:800 clamp(2.7rem,6.2vw,5.2rem)/.95 var(--display);letter-spacing:-.035em;margin:0 0 1.4rem;font-variation-settings:"opsz" 96}.hero-copy h1{font-size:clamp(4.2rem,9vw,8rem);line-height:.9;letter-spacing:-.045em}.lede{font-size:clamp(1.1rem,1.6vw,1.28rem);color:var(--muted);max-width:34ch;margin:0 0 2rem}.page-hero .lede{max-width:none;margin-bottom:0;font-size:clamp(1.2rem,1.8vw,1.45rem);line-height:1.55}.hero-ctas{display:flex;flex-wrap:wrap;gap:.85rem}.hero-ctas .btn{min-height:52px;padding:.9rem 1.35rem;border-radius:999px;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease}.hero-ctas .btn:hover{transform:translateY(-3px)}.hero-ctas .btn:active{transform:translateY(0)}.hero-ctas .btn-hot{box-shadow:0 12px 26px -14px #d02e18f2}.hero-ctas .btn-hot:hover{background:var(--ember-bright);box-shadow:0 18px 34px -12px #d02e18cc}.hero-ctas .btn-ghost{background:var(--stage);color:#fff;box-shadow:0 12px 26px -16px #16132ce6}.hero-ctas .btn-ghost:hover{background:var(--stage-2);box-shadow:0 18px 34px -14px #16132cbf}.hero-ctas .vid-launch{background:transparent;color:var(--ember-text);box-shadow:inset 0 0 0 2px var(--ember)}.hero-ctas .vid-launch svg{width:14px;height:14px}.hero-ctas .vid-launch:hover{background:var(--ember);color:#fff;box-shadow:0 18px 34px -12px #d02e18bf}.hero-note{margin-top:1.4rem;font-size:.95rem;color:var(--muted)}.page-hero{padding:clamp(2.5rem,6vw,4.5rem) 0 .5rem}.page-hero h1{font-size:clamp(2.4rem,5vw,4.2rem);max-width:none}.page-hero+section.block{border-top:0;padding-top:.75rem}section.block.series-page,section.block.lesson-page{border-top:0;padding-top:.35rem}.series-page .tag-row{margin:0 0 .85rem}.series-page .meta{margin:0 0 1.6rem}.not-found-actions{display:flex;flex-wrap:wrap;gap:.85rem}.eyebrow{font-weight:700;color:var(--ember-text);letter-spacing:.04em;text-transform:uppercase;font-size:.82rem;margin:0 0 .8rem}.back{margin:0 0 1rem}.vid-slot{display:contents}.vid{position:relative;aspect-ratio:16/9;width:100%;border-radius:22px;overflow:hidden;background:#16132c;box-shadow:0 30px 60px -30px #16132c8c}.vid-modal{width:min(1080px,calc(100vw - 2.5rem));margin:auto;padding:0;border:0;background:transparent;overflow:visible}.vid-modal::backdrop{background:#080710d1}.vid-modal-panel{position:relative;padding-top:2.75rem}.vid-close{position:absolute;z-index:2;top:0;right:.2rem;border:0;background:transparent;color:#fff;cursor:pointer;font:700 1rem/1 var(--body)}.vid video{display:block;width:100%;height:100%;-o-object-fit:contain;object-fit:contain;background:#16132c}.vid-scrub{position:absolute;z-index:3;left:12px;right:12px;bottom:12px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.75rem;align-items:center;padding:.55rem .8rem;border-radius:999px;background:#0a0819c7}.vid-scrub-track{position:relative;height:8px;border-radius:999px;background:#ffffff59;cursor:pointer}.vid-scrub-fill{position:absolute;inset:0 auto 0 0;background:#ff4b2b;border-radius:inherit}.vid-scrub-time{color:#fff;font:600 .85rem/1 var(--mono);font-variant-numeric:tabular-nums}section.block{padding:clamp(3rem,7vw,5.5rem) 0;border-top:1px solid var(--line)}section.block.join{border-top:0;padding-top:0}.sec-head{display:flex;align-items:end;justify-content:space-between;gap:1.5rem;margin-bottom:2.2rem;flex-wrap:wrap}.site h2{font:800 clamp(2rem,4vw,3.1rem)/1 var(--display);letter-spacing:-.03em;margin:0}.sec-head p{margin:.6rem 0 0;color:var(--muted);max-width:52ch}.textlink{font-weight:700;color:var(--ember-text);text-decoration:none;border-bottom:2px solid currentColor;padding-bottom:2px}.textlink:hover{color:var(--ink)}.snips{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:1.5rem}.snip-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem}.snips>*,.snip-grid>*{min-width:0}section.block.snip-page{border-top:0;padding-top:clamp(1.25rem,3vw,2rem)}.snip-single{display:grid;gap:1.5rem}.snip-single .article-media{margin:0}.snip-single .article-media video,.snip-single .article-media img{aspect-ratio:16/9;height:auto;max-height:none;-o-object-fit:contain;object-fit:contain}.snippet-body{display:grid;gap:1rem}.snippet-body h2{margin:.8rem 0 0;font:700 1.45rem/1.25 var(--display)}.snippet-body p{margin:0;color:var(--muted);font-size:1.05rem;line-height:1.65}@media(max-width:900px){.snips,.snip-grid{grid-template-columns:1fr}}.snippet{background:var(--code-bg);color:var(--code-ink);border-radius:20px;padding:1.6rem;display:flex;flex-direction:column;min-width:0;max-width:100%}.snippet h3{font:700 1.45rem/1.2 var(--display);margin:0 0 .35rem;color:#fff;letter-spacing:-.015em}.snippet h3 a{text-decoration:none;color:inherit}.snippet h3 a:hover{color:#ffd2c8}.snippet p{margin:0 0 1.2rem;color:#c9c6e8;font-size:.98rem}.code-box{display:grid;min-width:0;background:#100e22;border-radius:14px;overflow:hidden;box-shadow:inset 0 0 0 1px #ffffff14}.code-head{display:flex;align-items:center;gap:.7rem;min-width:0;padding:.55rem .7rem .55rem .9rem;background:#1c1838;border-bottom:1px solid rgba(255,255,255,.08)}.code-dots{display:flex;gap:.32rem;flex:none}.code-dots i{width:.58rem;height:.58rem;border-radius:50%;background:#ff5f57}.code-dots i:nth-child(2){background:#febc2e}.code-dots i:nth-child(3){background:#28c840}.code-file{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:600 .8rem/1 var(--mono);color:#c9c6e8}.code-lang{display:none}.code-box pre{margin:0;padding:1.05rem 1.2rem 1.2rem;overflow-x:auto;font:400 .9rem/1.65 var(--mono);color:var(--code-ink);white-space:pre}.c{color:var(--code-com)}.k{color:var(--code-key)}.f{color:var(--code-fn)}.s{color:var(--code-str)}.copy{position:relative;display:inline-flex;align-items:center;justify-content:center;flex:none;margin-left:auto;width:32px;height:32px;padding:0;border-radius:8px;border:1px solid rgba(255,255,255,.2);background:#ffffff0f;color:#fff;cursor:pointer}.copy svg{width:16px;height:16px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.copy:hover{background:#ffffff24}.snip-foot{display:flex;justify-content:space-between;align-items:center;margin-top:1.2rem;font-size:.9rem;color:#b3afda}.snip-end{display:flex;flex-direction:column;align-items:flex-start;gap:1rem;margin-top:auto;padding-top:1.2rem}.snip-end .snip-foot{margin-top:0;width:100%}.snippet .snip-open{background:#fff;color:#8e1d0b}.snippet .snip-open:hover{background:#ffe4de}.tips{display:flex;flex-direction:column;border-radius:20px;background:var(--surface);border:1px solid var(--line)}.tip{padding:1.3rem 1.4rem;border-bottom:1px solid var(--line)}.tips .tip:last-child{border-bottom:0}.tip h3{font:700 1.12rem/1.3 var(--body);margin:0 0 .5rem}.tip h3 a{color:inherit;text-decoration:none}.tip h3 a:hover{color:var(--ember-text)}.tip-single .code-box{max-width:46rem}.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.catalogue{display:grid;gap:1rem;margin-bottom:1.6rem}.catalogue-bar{display:flex;align-items:center;gap:.75rem 1.25rem}.catalogue-tags{display:flex;flex:1;flex-wrap:wrap;gap:.5rem;min-width:0}.catalogue-meta{display:flex;align-items:center;flex:none;margin-left:auto;gap:.75rem 1rem}.catalogue-search input{width:100%;min-height:52px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);padding:0 1.15rem;font:500 1rem/1 var(--body)}.catalogue-tags a{text-decoration:none;border-radius:999px;padding:.5rem .9rem;background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--line);font-weight:700}.catalogue-tags a.is-on,.catalogue-tags a:hover{background:var(--ember);color:#fff;box-shadow:none}.catalogue-count{margin:0;color:var(--muted);font-size:.85rem;font-weight:600;letter-spacing:.01em;white-space:nowrap}.catalogue-count strong{color:var(--ink);font:800 1.05rem/1 var(--display);font-variant-numeric:tabular-nums;letter-spacing:-.02em}.catalogue-empty{margin:0;color:var(--muted)}.catalogue-pager{display:flex;align-items:center;padding:.2rem;gap:.15rem;border-radius:999px;background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--line)}.catalogue-pager a{min-height:36px;min-width:36px;padding:0 .75rem;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;text-decoration:none;font-weight:700;font-size:.92rem;color:var(--ink)}.catalogue-pager a.is-on,.catalogue-pager a:hover{background:var(--stage);color:#fff}.tag-row{display:flex;flex-wrap:wrap;gap:.45rem;margin:0 0 1rem}.site.has-consent{padding-bottom:8.5rem}.consent{position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--stage);color:#fff;padding:1rem 0;box-shadow:0 -18px 40px -24px #0009}.consent .wrap{display:flex;gap:1rem;align-items:center;justify-content:space-between;flex-wrap:wrap}.consent p{margin:0;max-width:68ch}.consent-actions{display:flex;gap:.6rem}.consent .btn{background:#fff;color:var(--stage)}.consent .btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px #ffffff73}.consent .btn-ghost:hover{box-shadow:inset 0 0 0 1.5px #fff}.tip code{display:block;font:400 .84rem/1.5 var(--mono);background:var(--surface-2);border-radius:8px;padding:.6rem .75rem;overflow-x:auto;white-space:pre}.tip p{margin:.55rem 0 0;color:var(--muted);font-size:.95rem}.tip-open{margin-top:.9rem}.tip-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}@media(max-width:800px){.tip-grid{grid-template-columns:1fr}}.tip-grid .tip{background:var(--surface);border:1px solid var(--line);border-radius:20px}.series{display:grid;gap:1rem}.series-rows{display:grid;gap:.55rem}.series-row{display:grid;grid-template-columns:2.5rem minmax(0,1fr) auto auto;gap:.75rem 1.1rem;align-items:center;padding:.7rem .85rem .7rem .7rem;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.series-row:hover{border-color:color-mix(in srgb,var(--ink) 28%,var(--line));background:color-mix(in srgb,var(--surface) 86%,var(--ink))}.series-row-lvl{width:2.5rem;height:2.5rem;display:grid;place-items:center;border-radius:10px;background:var(--surface-2);font:800 1rem/1 var(--display);color:var(--ember-text)}.series-row-copy{display:grid;gap:.15rem;min-width:0}.series-row h3{margin:0;font:700 1.08rem/1.25 var(--display);letter-spacing:-.015em}.series-row h3 a{color:inherit;text-decoration:none}.series-row h3 a:hover{color:var(--ember-text)}.series-row-copy p{margin:0;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:.92rem}.series-row-meta{margin:0;color:var(--muted);font-size:.82rem;font-weight:650;white-space:nowrap}.series-row-actions{display:flex;align-items:center;gap:.5rem}.series-watch{display:grid;place-items:center;width:36px;height:36px;padding:0;border:0;border-radius:999px;background:var(--ink);color:var(--bg);cursor:pointer}.series-watch svg{width:13px;height:13px;margin-left:1px}.series-watch:hover{background:var(--ember);color:#fff}.series-open{display:inline-flex;align-items:center;height:36px;padding:0 .9rem;border-radius:999px;background:transparent;box-shadow:inset 0 0 0 1.5px var(--line);color:var(--ink);font-weight:700;text-decoration:none}.series-open:hover{box-shadow:inset 0 0 0 1.5px var(--ink);color:var(--ink)}.series-modal video{display:block;width:100%;max-height:80vh;border-radius:16px;background:#16132c}.series-modal-title{position:absolute;top:0;left:0;margin:0;color:#fff;font:700 1rem/1.2 var(--display)}.article-rows{display:grid;gap:.55rem;container-type:inline-size}.article-row{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:.75rem 1.1rem;align-items:center;padding:.7rem .85rem .7rem 1rem;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.article-row:hover{border-color:color-mix(in srgb,var(--ink) 28%,var(--line));background:color-mix(in srgb,var(--surface) 86%,var(--ink))}.article-row-copy{display:grid;gap:.15rem;min-width:0}.article-row h3{margin:0;font:700 1.08rem/1.25 var(--display);letter-spacing:-.015em}.article-row h3 a{color:inherit;text-decoration:none}.article-row h3 a:hover{color:var(--ember-text)}.article-row-copy p,.article-row-meta{margin:0;min-width:0;color:var(--muted)}.article-row-copy p{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.92rem}.article-row-meta{font-size:.82rem;font-weight:650;white-space:nowrap}.article-row-actions{display:flex;align-items:center;gap:.5rem}@container (max-width:680px){.article-row{grid-template-columns:minmax(0,1fr) auto;row-gap:.15rem}.article-row-copy{display:block}.article-row-copy p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.article-row-meta{grid-column:1}.article-row-actions{grid-column:2;grid-row:1 / span 2}}@media(max-width:760px){.series-row{grid-template-columns:2.25rem minmax(0,1fr) auto;row-gap:.15rem}.series-row-copy{display:block}.series-row-copy p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.series-row-meta{grid-column:2}.series-row-actions{grid-column:3;grid-row:1 / span 2}.article-row{grid-template-columns:minmax(0,1fr) auto;row-gap:.15rem}.article-row-copy{display:block}.article-row-copy p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.article-row-meta{grid-column:1}.article-row-actions{grid-column:2;grid-row:1 / span 2}}.course{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:1.6rem;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:1.4rem 1.6rem}.course:hover{border-color:var(--ink)}.course .lvl{width:84px;height:84px;border-radius:18px;display:grid;place-items:center;background:var(--surface-2);font:800 2.2rem/1 var(--display);color:var(--ember-text)}.course h3{font:800 1.55rem/1.15 var(--display);letter-spacing:-.02em;margin:0 0 .3rem}.course h3 a{text-decoration:none}.course h3 a:hover{color:var(--ember-text)}.course p{margin:0;color:var(--muted);max-width:60ch}.meta{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.75rem}.chip{font-size:.85rem;font-weight:600;padding:.3rem .65rem;border-radius:999px;background:var(--surface-2);color:var(--ink)}.buy{text-align:right}.course.feature{background:var(--ink);color:var(--bg);border-color:var(--ink)}.course.feature p{color:color-mix(in srgb,var(--bg) 75%,transparent)}.course.feature .chip{background:color-mix(in srgb,var(--bg) 14%,transparent);color:var(--bg)}.course.feature .lvl{background:var(--ember);color:#fff}.course.feature h3 a:hover,.course.feature h3 a:focus-visible{color:inherit;text-decoration:underline;text-decoration-color:var(--ember);text-decoration-thickness:2px;text-underline-offset:.18em}@media(max-width:760px){.course{grid-template-columns:1fr}.buy{text-align:left}.course .lvl{width:64px;height:64px;font-size:1.7rem}}.two{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:clamp(2rem,5vw,4rem)}@media(max-width:900px){.two{grid-template-columns:1fr}}.arts{list-style:none;margin:0;padding:0}.arts li{border-top:1px solid var(--line)}.arts li:last-child{border-bottom:1px solid var(--line)}.arts .art{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem;align-items:center;padding:1.4rem 0}.arts h3{font:700 clamp(1.2rem,2vw,1.45rem)/1.25 var(--display);letter-spacing:-.015em;margin:0 0 .35rem}.arts h3 a{color:inherit;text-decoration:none}.arts h3 a:hover{color:var(--ember-text)}.art-open{margin-top:.95rem}.arts p{margin:0;color:var(--muted);font-size:.98rem;max-width:62ch}.arts .by{margin:.2rem 0 .35rem;font-size:.85rem;font-weight:700}.arts .when{font-size:.88rem;color:var(--muted);white-space:nowrap;text-align:right}.news{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:1.5rem}.news h2{font-size:1.9rem;margin-bottom:1rem}.news ol,.news-index{list-style:none;margin:0;padding:0}.news li,.news-index li{padding:1rem 0;border-top:1px solid var(--line)}.news li:first-child,.news-index li:first-child{border-top:0;padding-top:0}.news a,.news-index a{text-decoration:none;font-weight:600;line-height:1.4}.news a:hover,.news-index a:hover{color:var(--ember-text)}.news time,.news-index time{display:block;font-size:.85rem;color:var(--muted);margin-top:.25rem}.news-index a{font:700 1.2rem/1.35 var(--display)}.news-more{margin:1.1rem 0 0}.news-index p{margin:.35rem 0 0;color:var(--muted);font-size:.98rem}.signup{background:var(--ember);color:#fff;border-radius:28px;padding:clamp(2rem,5vw,3.5rem);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2rem;align-items:center}@media(max-width:860px){.signup{grid-template-columns:1fr}}.signup h2{color:#fff}.signup p{margin:.8rem 0 0;color:#ffe4de;max-width:44ch}.form{display:flex;gap:.6rem;flex-wrap:wrap}.form label,.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.form input{flex:1;min-width:200px;min-height:52px;border-radius:12px;border:2px solid rgba(255,255,255,.5);background:#ffffff1f;color:#fff;padding:0 1rem;font:500 1rem var(--body)}.form input::-moz-placeholder{color:#ffd5cc}.form input::placeholder{color:#ffd5cc}.form input:focus{outline:none;border-color:#fff}.form button{min-height:52px;background:#fff;color:#8e1d0b;border-radius:12px;border:0;padding:0 1.3rem;font:700 1rem var(--body);cursor:pointer}.form-msg{margin-top:.8rem;font-weight:600;min-height:1.6em}.panel{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(1.4rem,3vw,2rem);max-width:640px}.stack{display:grid;gap:.9rem}.stack label{font-weight:700}.stack input,.stack textarea{width:100%;min-height:52px;border-radius:12px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);padding:.8rem 1rem;font:500 1rem var(--body)}.stack textarea{min-height:140px;resize:vertical}.article-body{display:flow-root;min-width:0}.article-body>*{min-width:0;max-width:100%}.article-body>:where(p,h2,h3,ul,ol,blockquote),.article-body>.article-callout{max-width:68ch}.article-body>:not(p,h2,h3,ul,ol,blockquote){margin:1.35rem 0}.article-body>:first-child{margin-top:0}.article-body h2{font:800 1.5rem/1.25 var(--display);letter-spacing:-.02em;margin:2.75em 0 .6em;padding-left:.7rem;border-left:3px solid var(--ember);color:var(--ink)}.article-body p,.article-body li{margin:0;color:var(--ink);font-size:clamp(1.15rem,1.6vw,1.35rem);line-height:1.65}.article-body>p{margin-bottom:1.25em}.article-body ul,.article-body ol{list-style:none;display:grid;gap:.9rem;margin:1.35em 0 1.6em;padding:0}.article-body li{position:relative;padding-left:1.35rem}.article-body li:before{content:"";position:absolute;left:0;top:.55em;width:.45rem;height:.45rem;border-radius:50%;background:var(--ember)}.article-body li a{color:var(--ember-text);font-weight:700}.article-body :not(pre)>code{font:500 .9em var(--mono);color:var(--ember-text);background:color-mix(in srgb,var(--ink) 8%,transparent);border:1px solid color-mix(in srgb,var(--ink) 16%,transparent);padding:.1em .35em;border-radius:4px;overflow-wrap:anywhere;box-decoration-break:clone;-webkit-box-decoration-break:clone}.inline-code{font:500 .92em var(--mono);color:var(--ink);background:var(--surface-2);padding:.1em .35em;border-radius:6px;overflow-wrap:anywhere;box-decoration-break:clone;-webkit-box-decoration-break:clone}.article-note{display:grid;gap:.45rem;padding:1rem 1.15rem;border-radius:14px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}.article-note p{font-size:1.05rem}.article-body>.article-callout{padding:1rem 1.25rem;border-radius:12px;background:color-mix(in srgb,var(--ember) 12%,var(--surface));box-shadow:inset 3px 0 0 var(--ember)}.article-body>.article-callout.is-tip{background:color-mix(in srgb,var(--good) 14%,var(--surface));box-shadow:inset 3px 0 0 var(--good)}.article-body>.article-callout.is-tip .article-note-label{color:var(--good-text)}.article-body>.article-callout p{margin:0;font-size:1.08rem;line-height:1.55}.article-note-label{font:700 .78rem/1.3 var(--body);letter-spacing:.06em;text-transform:uppercase;color:var(--ember-text)}.quiz-question{margin:0;color:var(--ink);font-size:1.05rem}.quiz-options{display:grid;gap:.45rem}.quiz-option{display:flex;gap:.7rem;align-items:flex-start;width:100%;padding:.7rem .8rem;border:0;border-radius:12px;background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--line);color:var(--ink);font:500 1rem/1.45 var(--body);text-align:left;cursor:pointer}.quiz-option:hover{box-shadow:inset 0 0 0 1px var(--ink)}.quiz-option:focus-visible{outline:2px solid var(--ember);outline-offset:2px}.quiz-option.is-correct{box-shadow:inset 0 0 0 2px var(--good);background:color-mix(in srgb,var(--good) 14%,var(--surface))}.quiz-option.is-wrong{box-shadow:inset 0 0 0 2px var(--ember);background:color-mix(in srgb,var(--ember) 10%,var(--surface))}.site .quiz-option.is-correct:focus-visible{outline-color:var(--good)}.quiz-key{flex:none;font-weight:800}.quiz-actions{display:flex}.quiz-reveal{padding:.35rem .7rem;border:0;border-radius:999px;background:transparent;box-shadow:inset 0 0 0 1px var(--line);color:var(--ink);font:700 .85rem/1 var(--body);cursor:pointer}.quiz-reveal:focus-visible{outline:2px solid var(--ember);outline-offset:2px}.quiz-result{display:grid;gap:.35rem}.quiz-result.is-correct,.quiz-result.is-wrong{margin-top:.15rem;padding:.85rem 1rem;border-radius:12px}.quiz-result.is-correct{background:color-mix(in srgb,var(--good) 12%,var(--surface));box-shadow:inset 3px 0 0 var(--good)}.quiz-result.is-wrong{background:color-mix(in srgb,var(--ember) 10%,var(--surface));box-shadow:inset 3px 0 0 var(--ember)}.article-note .quiz-result-label{margin:0;font:700 .72rem/1.2 var(--body);letter-spacing:.08em;text-transform:uppercase}.quiz-result.is-correct .quiz-result-label{color:var(--good-text)}.quiz-result.is-wrong .quiz-result-label{color:var(--ember-text)}.article-note .quiz-result-why{margin:0;color:var(--ink);font-size:1.05rem;line-height:1.55}.quiz-card details{color:var(--ink)}.quiz-card summary{cursor:pointer;font-weight:700}.quiz-card summary:focus-visible{outline:2px solid var(--ember);outline-offset:2px}.prose{max-width:none}.prose a{color:var(--ember-text);font-weight:700}.site .prose h2{font:800 clamp(1.35rem,2vw,1.7rem)/1.25 var(--display);letter-spacing:-.02em;margin:2.2rem 0 .75rem;color:var(--ink)}.prose p{color:var(--ink);font-size:clamp(1.15rem,1.6vw,1.35rem);line-height:1.65;margin:0 0 1.1rem}.prose p:last-child{margin-bottom:0}.site .prose code{font:500 .92em var(--mono);color:var(--ink);background:var(--surface-2);padding:.1em .35em;border-radius:6px}.byline{color:var(--muted);font-size:1.05rem}.article-media{margin:0 0 1.6rem;min-width:0;max-width:100%}.media-sound{display:flex;justify-content:flex-end;gap:.45rem;margin:0 0 .6rem}.sound-btn,.cc-btn{display:inline-flex;align-items:center;gap:.45rem;min-height:36px;padding:.35rem .8rem;border:0;border-radius:999px;background:var(--surface);color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line);font:700 .85rem/1 var(--body);cursor:pointer}.sound-btn svg{width:1.05rem;height:1.05rem;flex:none}.sound-btn:hover,.cc-btn:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}.sound-btn.is-on,.cc-btn.is-on{background:var(--ember);color:#fff;box-shadow:none}.sound-btn.is-on:hover,.cc-btn.is-on:hover{background:#b8270f}.sound-btn:focus-visible{outline:2px solid var(--ember);outline-offset:2px}.media-frame{position:relative;border-radius:18px;overflow:hidden}.article-media img,.article-media video{display:block;width:100%;max-width:100%;min-width:0;max-height:520px;-o-object-fit:cover;object-fit:cover;border-radius:18px;background:#16132c}.article-media.is-lesson{max-width:100%}.article-media.is-lesson video{width:100%;max-height:60vh;-o-object-fit:contain;object-fit:contain}.watch-row{display:flex;align-items:center;gap:.6rem;margin:0 0 .55rem}.watch-label{margin:0;font:700 .82rem/1 var(--body);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.watched-badge{padding:.2rem .5rem;border-radius:999px;background:var(--surface-2);font:700 .72rem/1 var(--body);letter-spacing:.04em;text-transform:uppercase}.media-frame video{border-radius:0}.news-source{display:block;margin-bottom:.2rem;font-size:.75rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ember-text)}.byline{margin:0 0 1.4rem;font-weight:600}.series-progress{display:flex;align-items:center;gap:.75rem;margin:.85rem 0 0}.series-progress-bar{flex:1;max-width:12rem;height:6px;border-radius:999px;background:var(--line);overflow:hidden}.lesson-nav .series-progress{margin:.35rem .75rem .45rem}.lesson-nav .series-progress-bar{max-width:none}.series-progress-bar span{display:block;height:100%;background:var(--ember)}.series-progress-label{font-weight:700;font-size:.92rem}.course.feature .series-progress-bar{background:color-mix(in srgb,currentColor 22%,transparent)}.course.feature .series-progress-label{color:inherit}.series-layout{display:grid;grid-template-columns:minmax(18rem,24rem) minmax(0,1fr);gap:2.5rem;align-items:start}.series-side{position:sticky;top:calc(env(safe-area-inset-top,0px) + 88px);max-height:calc(100vh - 7.5rem);overflow:auto;scrollbar-width:thin;scrollbar-color:var(--line) transparent}.series-main{min-width:0}.series-main .lesson-title{font-size:clamp(1.7rem,2.6vw,2.35rem);line-height:1.15;letter-spacing:-.03em;margin:0 0 .9rem}.lesson-nav-toggle,.lesson-nav-shade{display:none}.lesson-nav-panel{padding:.35rem;border-radius:18px;background:color-mix(in srgb,var(--surface) 92%,transparent);box-shadow:inset 0 0 0 1px var(--line)}.lesson-nav-label{margin:.5rem .75rem .2rem;font:700 .74rem/1 var(--body);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.lesson-list{list-style:none;margin:0;padding:0}.lesson-list li{display:grid;grid-template-columns:2rem minmax(0,1fr) auto;gap:.65rem;align-items:center;padding:.72rem .7rem;border-radius:12px}.lesson-list li:hover{background:var(--surface-2)}.lesson-list li.is-current{background:color-mix(in srgb,var(--ember) 16%,var(--surface));box-shadow:inset 3px 0 0 var(--ember)}.lesson-state{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:.35rem .7rem;border:0;border-radius:999px;background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--line);font:700 .78rem/1 var(--body);color:var(--muted);cursor:pointer;transition:transform .15s ease,background .15s ease,box-shadow .15s ease,color .15s ease}.lesson-state:hover{transform:translateY(-2px);background:var(--surface-2);box-shadow:inset 0 0 0 1.5px var(--ink);color:var(--ink)}.lesson-list li.is-done .lesson-state{color:var(--ember-text);background:color-mix(in srgb,var(--ember) 10%,var(--surface));box-shadow:inset 0 0 0 1.5px color-mix(in srgb,var(--ember) 55%,var(--line))}.lesson-list li.is-done .lesson-state:hover{background:color-mix(in srgb,var(--ember) 18%,var(--surface));box-shadow:inset 0 0 0 1.5px var(--ember)}.lesson-list .n{font:700 .78rem/1 var(--body);letter-spacing:.04em;color:var(--muted)}.lesson-list li.is-current .n,.lesson-list li.is-current a{color:var(--ember-text)}.lesson-list a,.lesson-list li>span:not(.n){text-decoration:none;font-weight:650;line-height:1.3;color:var(--ink)}.series-strip{display:flex;flex-wrap:nowrap;align-items:center;gap:.75rem;margin:0;padding:.85rem 1rem;border-radius:16px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}.series-strip+.series-layout,.series-layout+.series-strip,.series-layout+.up-next{margin-top:2.5rem}.up-next+.series-strip{margin-top:.85rem}.series-goal{margin:1rem 0 1.2rem;max-width:62ch;font-size:1.15rem;line-height:1.55}.series-parts{display:grid;gap:1.6rem;margin-top:2.2rem}.series-part h2{margin:0 0 .35rem;font:800 1.35rem/1.25 var(--display)}.series-part p{margin:0 0 .8rem;color:var(--muted)}.series-part ol{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}.series-part a{font-weight:700;text-decoration:none}.series-part a:hover{color:var(--ember-text)}.series-wrap{margin-top:2.4rem}.series-wrap h2{margin:0 0 .8rem;font:800 1.45rem/1.25 var(--display)}.up-next{display:flex;flex-wrap:wrap;align-items:center;gap:.8rem 1.1rem;padding:1rem 1.15rem;border-radius:16px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}.up-next p{margin:0;flex:1 1 16rem}.up-next-links{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}.lesson-part{margin:1rem .75rem .15rem;font:700 .74rem/1 var(--body);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.lesson-part-label{margin:0 0 .45rem}.series-moves{display:flex;flex:1;align-items:center;gap:.75rem;min-width:0}.series-strip .btn{min-height:44px}.series-strip .series-next{margin-left:auto}.series-move-short{display:none}@media(max-width:420px){.series-move-full{display:none}.series-move-short{display:inline}.series-strip{gap:.45rem;padding:.65rem .7rem}.series-moves{gap:.45rem}}.lesson-list li:hover a,.lesson-list li:hover>span:not(.n){color:var(--ink)}.lesson-list li.is-current:hover a,.lesson-list li.is-current:hover .n{color:var(--ember-text)}.lesson-ask{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:1.5rem}@media(max-width:900px){.series-layout{grid-template-columns:1fr;gap:1.25rem}.series-strip+.series-layout,.series-layout+.series-strip{margin-top:1.25rem}.series-side{position:static;max-height:none;overflow:visible;padding-right:0}.lesson-nav-toggle{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;width:auto;min-height:44px;padding:.7rem 1rem;border:0;border-radius:12px;background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--line);font:700 1rem/1 var(--body);color:var(--ink);cursor:pointer}.lesson-nav-toggle:hover,.lesson-nav-toggle:focus-visible{box-shadow:inset 0 0 0 1.5px var(--ink)}.series-moves{flex:0 1 auto;margin-left:auto}.series-strip .series-next{margin-left:0}.lesson-nav-panel{display:none}.lesson-nav.is-open .lesson-nav-shade{display:block;position:fixed;inset:0;z-index:44;border:0;background:#080710b8;cursor:pointer}.lesson-nav.is-open .lesson-nav-panel{display:block;position:fixed;z-index:45;top:0;bottom:0;left:0;width:min(22rem,100%);overflow:auto;padding:1.25rem .7rem 2rem;border-radius:0;background:var(--surface);box-shadow:24px 0 50px -28px #000000a6}}.lesson-ask-shade{position:absolute;inset:0;border:0;background:#080710b8;cursor:pointer}.lesson-ask-panel{position:relative;z-index:1;width:min(28rem,100%);padding:1.6rem 1.5rem;border-radius:18px;background:var(--surface);color:var(--ink);box-shadow:0 30px 60px -28px #0000008c}.lesson-ask-panel h2{margin:0 0 .6rem;font:800 1.45rem/1.2 var(--display);letter-spacing:-.02em}.lesson-ask-panel p{margin:0 0 1.25rem;color:var(--muted);line-height:1.55}.lesson-ask-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.7rem}.site footer{padding:4rem 0 2.5rem;background:var(--chrome);border-top:1px solid var(--line)}.foot{display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2fr));gap:2rem}@media(max-width:800px){.foot{grid-template-columns:1fr;justify-items:center;text-align:center}.foot .about{display:flex;flex-direction:column;align-items:center}.about p{margin-left:auto;margin-right:auto}.legal{flex-direction:column;align-items:center;text-align:center}}.foot h3{font:700 .95rem/1.2 var(--body);margin:0 0 .9rem}.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:.55rem}.foot ul a{text-decoration:none;color:var(--muted)}.foot ul a:hover{color:var(--ink)}.about p{color:var(--muted);max-width:36ch;margin:1rem 0 0}.legal{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}.built{display:inline-flex;align-items:center;gap:.5rem;color:var(--ink);font-weight:600;text-decoration:none}.built svg{width:22px;height:22px}.built:hover span{color:var(--ember-text)}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}.site.is-lesson main{background:#0d0e12;color:#c9ccd6}.site.is-lesson section.block.series-page,.site.is-lesson section.block.lesson-page{padding-top:0;padding-bottom:1rem;border-top:0}.callout-badge{display:none}.lesson-top{display:flex;align-items:center;gap:14px;padding-top:22px}.lesson-crumb{margin:0;font-size:14px;color:#8a8fa0}.lesson-crumb a{color:inherit;text-decoration:none}.lesson-crumb strong{color:#f4f4f6;font-weight:600}.lesson-steps{display:flex;gap:4px}.lesson-steps i{display:block;width:22px;height:4px;border-radius:2px;background:#262833}.lesson-steps i.on{background:#e5392b}.lesson-menu-btn{display:inline-flex;align-items:center;gap:8px;height:38px;margin-left:auto;padding:0 14px;border-radius:10px;border:1px solid #262833;background:#15161c;font-size:14px;font-weight:500;color:#f4f4f6;cursor:pointer}.lesson-menu-btn:hover{border-color:#3a3d4a}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:56px;padding-top:28px;padding-bottom:8px}.lesson-read{max-width:none;min-width:0}.lesson-eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;font:600 12px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:#ff7a59}.lesson-eyebrow:before{content:"";width:18px;height:2px;border-radius:2px;background:currentColor}.lesson-read h1{margin:0 0 18px;color:#f4f4f6;font:800 clamp(34px,5vw,52px)/1.05 var(--display);letter-spacing:-.02em}.lesson-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 28px}.pill{font-size:13px;font-weight:500;color:#c9ccd6;padding:4px 10px;border-radius:999px;background:#15161c;border:1px solid #262833}.pill.time{color:#f4f4f6}.lesson-lede p{max-width:none;margin:0 0 36px;font-size:20px;line-height:1.6;color:#dfe1e8}.lesson-aside{display:none}.lesson-side{position:sticky;top:96px;display:grid;gap:28px;align-content:start;max-height:calc(100vh - 7.5rem);overflow:auto;scrollbar-width:thin}.lesson-side h4,.lesson-drawer-panel h4{margin:0 0 12px;font:600 11px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:#8a8fa0}.lesson-toc{position:static;display:block;list-style:none;margin:0;padding:0;border-left:1px solid #262833}.lesson-toc a{display:block;padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:14px;line-height:1.4;color:#8a8fa0;text-decoration:none}.lesson-toc a:hover{color:#f4f4f6}.lesson-toc a[aria-current=true]{color:#f4f4f6;border-left-color:#e5392b}.lesson-mini-part{margin:16px 0 6px;font:600 11px/1.3 var(--body);letter-spacing:.08em;text-transform:uppercase;color:#8a8fa0}.lesson-mini{list-style:none;margin:0;padding:0;display:grid;gap:4px}.lesson-mini a{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border-radius:9px;font-size:14px;line-height:1.35;font-weight:500;color:#8a8fa0;text-decoration:none}.lesson-mini a:hover,.lesson-mini a.cur{background:#15161c;color:#f4f4f6}.lesson-mini .n{flex:none;display:grid;place-items:center;min-width:22px;height:22px;padding:0 4px;border-radius:999px;border:1px solid #262833;font:600 11px/1 var(--mono)}.lesson-mini a.is-read .n,.lesson-mini span.is-read .n{background:#d4d4d8;border-color:#d4d4d8;color:#18181b}.lesson-mini a.cur .n,.lesson-mini span.cur .n{background:#e5392b;border-color:#e5392b;color:#fff}.rail-filter{display:block;margin:0 0 10px}.rail-filter input{width:100%;height:36px;padding:0 12px;border-radius:9px;border:1px solid #262833;background:#15161c;color:#f4f4f6;font:500 14px/1 var(--body)}.rail-filter input::-moz-placeholder{color:#8a8fa0}.rail-filter input::placeholder{color:#8a8fa0}.rail-empty{margin:0;color:#8a8fa0;font-size:14px}.lesson-page.is-snippet .lesson-top .lesson-menu-btn,.lesson-page.is-article .lesson-top .lesson-menu-btn{display:none}@media(max-width:1079px){.lesson-page.is-snippet .lesson-top .lesson-menu-btn,.lesson-page.is-article .lesson-top .lesson-menu-btn{display:inline-flex}}.lesson-drawer{display:none;position:fixed;inset:0;z-index:60}.lesson-drawer.is-open{display:block}.lesson-drawer-scrim{position:absolute;inset:0;border:0;background:#0000008c;cursor:pointer}.lesson-drawer-panel{position:absolute;right:0;top:0;bottom:0;width:min(360px,90vw);display:grid;align-content:start;gap:8px;overflow:auto;padding:24px;background:#15161c;border-left:1px solid #262833}.lesson-drawer-close{justify-self:end;margin:0 0 8px}.lesson-drawer .lesson-nav-panel,.lesson-drawer .lesson-nav.is-open .lesson-nav-panel{display:block;position:static;width:auto;max-height:none;overflow:visible;padding:0;border-radius:0;background:transparent;box-shadow:none}.lesson-drawer .lesson-nav.is-open .lesson-nav-shade{display:none}@media(min-width:1080px){.lesson-layout{grid-template-columns:minmax(0,1fr) 240px}.lesson-aside{display:block}}.site.is-lesson .article-body>:where(p,h2,h3,ul,ol,blockquote),.site.is-lesson .article-body>.article-callout{max-width:none}.site.is-lesson .article-body p,.site.is-lesson .article-body li{font-size:17px;line-height:1.7;color:#c9ccd6}.site.is-lesson .article-body h2{margin:64px 0 18px;padding-left:0;border-left:0;color:#f4f4f6;font:700 28px/1.2 var(--display)}.site.is-lesson .article-media+.article-body>h2:first-child{margin-top:28px}.site.is-lesson .lesson-lede p{font-size:20px;line-height:1.6;color:#dfe1e8}.site.is-lesson .lesson-recap h2{margin:0 0 10px;font-size:22px}.site.is-lesson .lesson-quiz h2{margin:0;font-size:22px}.site.is-lesson .lesson-quiz .quiz-question{margin:0 0 18px;color:#f4f4f6;font-size:18px;font-weight:500;line-height:1.5}.site.is-lesson .lesson-checks{margin:0;padding:0}.lesson-sec{display:block;margin-bottom:12px;font:600 13px/1 var(--mono);letter-spacing:.04em;color:#8a8fa0}.site.is-lesson .article-body :not(pre)>code{color:#ffd7cc;background:#ff7a5914;border:1px solid rgba(255,122,89,.14);padding:.08em .38em;border-radius:6px}.site.is-lesson .code-box{background:#111218;border:1px solid #262833;border-radius:12px;box-shadow:none}.site.is-lesson .code-head{height:42px;padding:0 8px 0 16px;background:#15161c;border-bottom:1px solid #1e2029}.site.is-lesson .code-file{color:#f4f4f6;font:500 13px/1 var(--mono)}.site.is-lesson .code-lang{display:inline-flex;align-items:center;font:600 10.5px/1 var(--body);letter-spacing:.08em;color:#8a8fa0;border:1px solid #262833;padding:4px 6px;border-radius:5px}.site.is-lesson .copy{width:auto;height:28px;gap:6px;padding:0 10px;border-color:transparent;background:none;color:#8a8fa0;font-size:12.5px}.site.is-lesson .copy:hover{color:#f4f4f6;border-color:#262833;background:#1b1c24}.site.is-lesson .copy svg{display:none}.site.is-lesson .copy .sr-only{position:static;width:auto;height:auto;margin:0;overflow:visible;clip:auto}.article-media.is-lesson{margin:0 0 56px}.article-media.is-lesson .media-frame{position:relative;border:1px solid #262833;border-radius:14px}.media-caption{position:absolute;z-index:2;inset:auto 16px 14px;display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:0;border-radius:0;background:transparent}.media-caption .watch-label{margin:0;color:#fff;letter-spacing:0;text-transform:none;font:500 13px/1 var(--mono);background:#0000008c;padding:6px 9px;border-radius:7px}.media-caption-actions{display:flex;gap:.35rem}.article-media.is-lesson .sound-btn,.article-media.is-lesson .cc-btn{min-height:32px;padding:.3rem .55rem;background:#0000008c;color:#fff;box-shadow:none}.article-media.is-lesson .sound-btn.is-on,.article-media.is-lesson .cc-btn.is-on{background:#ffffff29;color:#fff}.site.is-lesson .article-body>.article-callout.is-warning{display:flex;gap:16px;align-items:flex-start;margin:32px 0;padding:20px 22px;border-radius:12px;background:#e5392b1f;border:1px solid rgba(229,57,43,.28);box-shadow:none}.site.is-lesson .callout-badge{display:grid;place-items:center;flex:none;width:34px;height:34px;border-radius:9px;background:#e5392b;color:#fff}.site.is-lesson .callout-badge svg{width:18px;height:18px}.site.is-lesson .article-callout.is-warning .article-note-label{display:block;margin:2px 0 8px;color:#ff7a59;font:700 11px/1 var(--body);letter-spacing:.14em}.site.is-lesson .article-callout.is-warning div>p:last-child{margin:0;color:#f4f4f6;font-weight:500}.lesson-recap{margin:64px 0 0;padding:28px;border-radius:14px;background:#15161c;border:1px solid #262833}.lesson-recap h2{margin:0 0 10px;padding:0;border:0;font-size:22px;color:#f4f4f6}.lesson-recap>p{margin:0 0 18px}.lesson-checks{list-style:none;margin:0;padding:0;display:grid;gap:12px}.lesson-checks li{display:flex;gap:12px;align-items:flex-start;padding-left:0;line-height:1.55}.lesson-checks li:before{content:"";position:static;flex:none;width:20px;height:20px;margin-top:2px;border-radius:6px;background:#4ade801a url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%234ade80' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5.5 10.5l3 3 6-7'/%3E%3C/svg%3E") center/16px no-repeat}.lesson-quiz{display:grid;gap:0;margin:24px 0 0;padding:28px;border-radius:14px;border:1px solid #262833;background:linear-gradient(180deg,#15161c,#121319);box-shadow:none}.lesson-quiz-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.lesson-quiz h2{margin:0;padding:0;border:0;color:#f4f4f6;font:700 22px/1.2 var(--display)}.quiz-count{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.lesson-dots{display:flex;gap:6px}.lesson-dots i{display:block;width:8px;height:8px;border-radius:50%;background:#262833}.lesson-dots i.on{background:#e5392b}.lesson-quiz .quiz-question{margin:0 0 18px;color:#f4f4f6;font-size:18px;font-weight:500;line-height:1.5}.lesson-quiz-step{display:block;margin:0 0 6px;color:#8a8fa0;font-size:13px;font-weight:500}.quiz-options{display:grid;gap:10px}.lesson-quiz .quiz-option{display:flex;align-items:center;gap:14px;width:100%;padding:14px 16px;border-radius:11px;border:1px solid #262833;background:#1b1c24;color:#c9ccd6;font-size:16px;text-align:left;cursor:pointer}.lesson-quiz .quiz-option:hover:not(:disabled){border-color:#41444f;color:#f4f4f6}.lesson-quiz .quiz-key{display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:8px;background:#262833;color:#f4f4f6;font:600 13px/1 var(--mono)}.lesson-quiz .quiz-option.is-correct{border-color:#4ade808c;background:#4ade801a;color:#f4f4f6}.lesson-quiz .quiz-option.is-correct .quiz-key{background:#4ade80;color:#06210f}.lesson-quiz .quiz-option.is-wrong{border-color:#f8717180;background:#f871711a;color:#f4f4f6}.lesson-quiz .quiz-option.is-wrong .quiz-key{background:#f87171;color:#2a0606}.lesson-quiz .quiz-option:disabled{opacity:1;cursor:default}.lesson-quiz .quiz-result{display:none}.lesson-quiz .quiz-result.is-correct,.lesson-quiz .quiz-result.is-wrong{display:block;margin-top:16px;padding:14px 16px;border-radius:10px;background:#1b1c24;border:1px solid #262833}.lesson-quiz .quiz-result-label{margin:0 0 6px;color:#f4f4f6;font-weight:700}.lesson-quiz .quiz-result-why{margin:0;color:#c9ccd6}.quiz-reveal{margin-top:12px;height:40px;padding:0 14px;border-radius:10px;border:1px solid #262833;background:transparent;color:#f4f4f6;font-weight:600;cursor:pointer}.lesson-quiz-score{margin:0;color:#f4f4f6;font:700 22px/1.2 var(--display)}.lesson-pager{margin:64px 0 0;padding-top:32px;border-top:1px solid #1e2029}.lesson-bridge{margin:0 0 16px;color:#8a8fa0}.lesson-pager-grid{display:grid;gap:12px;grid-template-columns:1fr}.pg{display:flex;flex-direction:column;justify-content:center;gap:6px;padding:18px 20px;border-radius:12px;border:1px solid #262833;background:#15161c;color:inherit;text-align:left;text-decoration:none}.pg:hover{border-color:#41444f}.pg small{font:600 11px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:#8a8fa0}.pg>span{font:700 17px/1.3 var(--display);color:#f4f4f6}.pg.next{position:relative;width:auto;padding-right:64px;border-color:transparent;background:linear-gradient(120deg,#d42f22,#e8492f);color:#fff;cursor:pointer}.pg.next small{color:#ffffffbf}.pg.next>span{font-size:20px;color:#fff}.pg.next svg{position:absolute;right:22px;top:50%;transform:translateY(-50%)}.pg.next:hover{background:linear-gradient(120deg,#d42f22,#e8492f)}.pg.next:hover svg{transform:translate(4px,-50%)}.lesson-overview{margin:14px 0 0}.lesson-overview a{color:#8a8fa0;font-weight:600;text-decoration:none}.lesson-overview a:hover{color:#f4f4f6}.site.is-lesson .series-parts{gap:0;margin-top:8px}.site.is-lesson .series-part h2{margin:64px 0 12px;color:#f4f4f6;font:700 28px/1.2 var(--display)}.site.is-lesson .series-part p{margin:0 0 16px;color:#c9ccd6;font-size:17px;line-height:1.7}.site.is-lesson .series-part ol{gap:8px}.site.is-lesson .series-part a{color:#f4f4f6;font-weight:600}.site.is-lesson .series-part a:hover{color:#ff7a59}.site.is-lesson .series-wrap h2{color:#f4f4f6}.lesson-page .lesson-list li.is-current{background:#ffffff0f;box-shadow:inset 2px 0 #fafafa}.lesson-page .lesson-list li.is-current .n,.lesson-page .lesson-list li.is-current a{color:#fafafa}.lesson-page .lesson-list li.is-done .lesson-state{color:#d4d4d8;background:#ffffff0a;box-shadow:inset 0 0 0 1px #ffffff29}.lesson-page .lesson-list li.is-done .lesson-state:before{content:"✓ "}.site.is-lesson .signup{margin:8px 0 72px;padding:36px;border:1px solid #262833;border-radius:18px;background:radial-gradient(90% 140% at 100% 0%,rgba(229,57,43,.14),transparent 60%),#15161c;color:#c9ccd6;box-shadow:none}.site.is-lesson .signup h2{margin:0 0 8px;color:#f4f4f6;font:800 28px/1.15 var(--display)}.site.is-lesson .signup p{margin:0;color:#8a8fa0;font-size:16px}.site.is-lesson .form input{height:48px;min-height:48px;border:1px solid #262833;border-radius:11px;background:#0d0e12;color:#f4f4f6}.site.is-lesson .form input::-moz-placeholder{color:#8a8fa0}.site.is-lesson .form input::placeholder{color:#8a8fa0}.site.is-lesson .form input:focus{outline:2px solid #e5392b;outline-offset:1px;border-color:transparent}.site.is-lesson .form button{height:48px;min-height:48px;padding:0 22px;border-radius:11px;background:#f4f4f6;color:#111;font-weight:600}.site.is-lesson .form-msg{color:#c9ccd6}@media(min-width:640px){.lesson-pager-grid{grid-template-columns:minmax(0,1fr) minmax(0,2fr)}.lesson-pager-grid .pg.next:only-child{grid-column:1 / -1}}@media(max-width:640px){.lesson-crumb{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.lesson-page.is-overview .lesson-crumb,.lesson-page.is-article .lesson-crumb,.lesson-page.is-news .lesson-crumb,.lesson-page.is-snippet .lesson-crumb{position:static;width:auto;height:auto;overflow:visible;clip:auto}.lesson-drawer-close{width:auto;padding:0 14px}.site.is-lesson .lesson-lede p{font-size:18px}.site.is-lesson .article-body h2{font-size:24px;margin-top:52px}.lesson-recap,.lesson-quiz,.site.is-lesson .signup{padding:22px}.site.is-lesson .code-lang{display:none}}