@charset "UTF-8";
:root{color-scheme:dark;--bg:#111210;--panel:#191a17;--ink:#f1eee7;--muted:#a8aaa0;--line:#34362e;--orange:#f29a52;--soft:#cbc9bc;--serif:Georgia,'Times New Roman',serif;--sans:'Segoe UI',Arial,sans-serif;--mono:Consolas,'Courier New',monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.65}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit}svg{display:block}::selection{background:var(--orange);color:var(--bg)}:focus-visible{outline:2px solid var(--orange);outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:400;line-height:1.12}h1,h2{font-family:var(--serif)}h1{font-size:clamp(48px,5.4vw,78px);letter-spacing:-3px}h2{font-size:clamp(34px,3.6vw,48px);letter-spacing:-1.5px}h3{font-size:23px;letter-spacing:-.5px}p{color:var(--muted)}.orange{color:var(--orange)}.muted{color:var(--muted)}.small{font-size:13px}.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--muted)}.container{width:min(1200px,calc(100% - 96px));margin:auto}.section{padding:76px 0;border-top:1px solid var(--line)}.text-link{display:inline-flex;gap:24px;align-items:center;font-size:14px}.text-link:hover{color:var(--orange)}.text-link span{font-size:22px}.button{display:inline-flex;align-items:center;justify-content:center;gap:28px;min-height:50px;padding:12px 22px;border:1px solid var(--line);font-size:14px;font-weight:600;background:transparent;transition:background .18s,color .18s}.button.primary{background:var(--orange);border-color:var(--orange);color:var(--bg)}.button:hover{background:#292b23}.button.primary:hover{background:#ffb272}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px}.section-heading .eyebrow{display:block;margin-bottom:12px}.skip-link{position:fixed;top:-90px;left:16px;background:var(--orange);color:var(--bg);padding:10px 16px;z-index:100}.skip-link:focus{top:10px}.site-header{border-bottom:1px solid var(--line);background:rgba(17,18,16,.97);position:sticky;top:0;z-index:10}.header-inner{max-width:1440px;margin:auto;padding:22px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;font-size:11px;font-weight:700;letter-spacing:1.9px;line-height:1.45}.brand-bottom{display:block;font-size:19px;letter-spacing:1px}.brand-mark{color:var(--orange);font-size:41px;line-height:1;border:1px solid var(--line);width:45px;height:48px;display:grid;place-items:center;transform:rotate(-7deg)}nav{display:flex;gap:32px;font-size:13px}nav a{color:var(--muted);padding:6px 0}nav a:hover,nav a[aria-current=page]{color:var(--ink)}nav a[aria-current=page]{box-shadow:0 2px var(--orange)}.header-actions{display:flex;align-items:center;gap:20px}.icon-button{border:0;background:transparent;display:grid;place-items:center;min-height:40px;min-width:40px;padding:8px}.icon-button:hover{color:var(--orange)}.icon-button svg{width:21px;height:21px}.private-link{display:flex;align-items:center;gap:10px;border:1px solid var(--line);padding:9px 13px;font-size:12px}.private-link svg{height:16px;width:16px}.private-link:hover{border-color:var(--orange)}.menu-toggle{display:none}
.hero{display:grid;grid-template-columns:1.12fr 1fr;gap:26px;align-items:center;min-height:580px;padding:66px 0 58px}.hero .eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:26px}.eyebrow-dot{width:6px;height:6px;background:var(--orange);border-radius:50%;display:inline-block}.hero h1 em{font-weight:400;color:var(--orange)}.hero-description{font-size:16px;line-height:1.8;max-width:415px;margin:25px 0 30px}.hero-actions{display:flex;gap:27px;align-items:center}.hero-footnote{font-size:11px;font-family:var(--mono);margin-top:27px;color:var(--muted)}.hero-art{position:relative;aspect-ratio:1.06;display:flex;align-items:center;justify-content:center;overflow:hidden;background:radial-gradient(ellipse at 50% 50%,#38322345 0,transparent 66%)}.hero-art svg{width:100%;height:100%}.art-caption{position:absolute;bottom:12px;left:24px;right:20px;display:flex;justify-content:space-between;font-family:var(--mono);font-size:9px;letter-spacing:1.4px;color:var(--muted)}.topic-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:76px}.topic-strip a{display:flex;align-items:center;gap:18px;padding:23px 24px;border-right:1px solid var(--line)}.topic-strip a:first-child{padding-left:0}.topic-strip a:last-child{border:0}.topic-strip a:hover .topic-title{color:var(--orange)}.topic-index{font-family:var(--mono);font-size:11px;color:var(--orange)}.topic-title{font-size:15px}.topic-sub{font-size:12px;color:var(--muted)}.topic-arrow{margin-left:auto;color:var(--muted)}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.article-card{display:flex;flex-direction:column;min-width:0}.card-art{height:215px;background:#1d201a;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;margin-bottom:22px;transition:background .2s}.card-art svg{width:100%;height:100%;transition:transform .4s}.article-card:hover .card-art svg{transform:scale(1.035)}.art-key{background:#252217}.art-blocks{background:#22241f}.art-privacy{background:#1f2424}.article-card:hover h3{color:var(--orange)}.card-meta{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}.card-meta .category{color:var(--orange)}.article-card h3{font-family:var(--serif);font-size:27px;line-height:1.18;margin-bottom:14px;transition:color .2s}.article-card p{font-size:13px;line-height:1.75;margin-bottom:20px}.card-bottom{border-top:1px solid var(--line);padding:14px 0 0;margin-top:auto;display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.card-bottom .arrow{color:var(--ink);font-size:18px;line-height:1}.latest-section{padding-bottom:72px}.reading-section{display:grid;grid-template-columns:.75fr 1.7fr;gap:60px}.reading-intro p{margin:22px 0 27px;max-width:280px;font-size:14px}.reading-intro .eyebrow{margin-bottom:16px;display:block}.reading-intro h2 em{color:var(--orange)}.book-row{display:grid;grid-template-columns:78px 1fr 28px;gap:25px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}.book-row:first-child{padding-top:0}.book-row:last-child{border:0;padding-bottom:0}.book-row h3{font-family:var(--serif);font-size:25px;margin:7px 0}.book-row p{font-size:12px}.book-row:hover h3{color:var(--orange)}.book-spine{width:70px;height:91px;border-left:5px solid #ffffff13;box-shadow:4px 5px 0 #0005;display:flex;flex-direction:column;justify-content:space-between;padding:8px;color:#171814;font-family:var(--serif)}.book-spine .book-symbol{font-size:34px;line-height:1.1}.book-spine .book-caption{font-family:var(--mono);font-size:6px;letter-spacing:1px}.paper{background:#d7d4c4}.lessons{background:#b7673a}.mastering{background:#a4b095}.private-banner{margin:0 0 76px;border:1px solid var(--line);padding:38px 44px;display:grid;grid-template-columns:70px 1fr auto;align-items:center;gap:30px;background:linear-gradient(110deg,#21231c,#151612)}.private-banner h2{font-size:34px;letter-spacing:-1px;margin:10px 0}.private-banner p{font-size:13px}.lock-illustration{width:56px;height:70px;color:var(--orange)}.status-pill{border:1px solid #6b6049;padding:5px 10px;border-radius:30px;font-family:var(--mono);font-size:9px;letter-spacing:1px;color:#d7c8a4;text-transform:uppercase}.about-note{display:grid;grid-template-columns:.65fr 1.35fr;gap:65px}.about-note p{font-family:var(--serif);font-size:29px;line-height:1.55;color:var(--soft);max-width:720px}.about-note .text-link{margin-top:24px}.site-footer{border-top:1px solid var(--line);padding:43px 48px 22px;max-width:1440px;margin:auto}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:25px;padding-bottom:40px}.footer-title{font-family:var(--serif);font-size:25px}.footer-top p{font-size:12px}.footer-bottom{display:flex;gap:24px;justify-content:space-between;border-top:1px solid var(--line);padding-top:22px;font-size:10px;color:var(--muted)}
.page-intro{padding:64px 0 42px;max-width:800px}.page-intro .eyebrow{display:block;margin-bottom:22px}.page-intro p{max-width:630px;margin-top:24px;font-size:17px}.page-intro h1{font-size:clamp(47px,5vw,68px)}.back-link{display:inline-flex;color:var(--muted);font-size:12px;margin-bottom:34px;gap:12px}.back-link:hover{color:var(--orange)}.filter-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 0 32px}.filter{background:transparent;border:1px solid var(--line);padding:9px 18px;font-size:12px;min-height:40px}.filter[aria-pressed=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.filter:hover{border-color:var(--orange)}.archive-grid{grid-template-columns:repeat(2,1fr);gap:48px 34px;padding-bottom:80px}.archive-grid .card-art{height:240px}.archive-grid h3{font-size:34px}.archive-grid p{max-width:470px}.result-count{font-size:11px;color:var(--muted);margin-left:auto;font-family:var(--mono)}.path-grid{border-top:1px solid var(--line);padding-bottom:80px}.path-step{display:grid;grid-template-columns:100px 1fr 44px;gap:20px;padding:35px 0;border-bottom:1px solid var(--line);align-items:center}.path-number{font-size:45px;color:var(--orange);font-family:var(--serif)}.path-step h2{font-size:34px;margin:8px 0 12px}.path-step p{font-size:14px;max-width:660px}.path-step:hover h2{color:var(--orange)}.book-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;padding-bottom:60px}.book-card{border:1px solid var(--line);padding:26px;display:flex;flex-direction:column}.book-display{background:#1d1f19;height:245px;display:grid;place-items:center;margin-bottom:25px}.book-display .book-spine{width:128px;height:173px;padding:15px;transform:rotate(-5deg);box-shadow:12px 14px 20px #0005;border-left-width:8px}.book-display .book-symbol{font-size:65px}.book-display .book-caption{font-size:9px}.book-card h2{font-size:31px;letter-spacing:-.6px;margin:14px 0 8px}.book-card .author{font-size:12px;min-height:42px}.book-card .description{font-size:13px;margin:18px 0 28px}.book-card .text-link{margin-top:auto;border-top:1px solid var(--line);padding-top:20px;justify-content:space-between}.resource-note{border-top:1px solid var(--line);padding:27px 0 70px;display:flex;justify-content:space-between;gap:30px;font-size:13px}.article-layout{display:grid;grid-template-columns:220px minmax(0,740px);gap:70px;justify-content:center;padding:55px 0 85px}.article-sidebar{padding-top:10px}.article-sidebar .eyebrow{display:block;margin-bottom:20px}.article-sidebar a{display:block;font-size:12px;color:var(--muted);margin-bottom:18px}.article-sidebar a:hover{color:var(--orange)}.article-sidebar-inner{position:sticky;top:130px}.article-header{border-bottom:1px solid var(--line);padding-bottom:32px}.article-header h1{font-size:clamp(43px,4.5vw,65px);margin:17px 0 22px}.article-header .lede{font-size:18px;line-height:1.7}.article-byline{margin-top:25px;display:flex;gap:18px;color:var(--muted);font-family:var(--mono);font-size:10px}.article-body{max-width:680px}.article-body section{margin:37px 0}.article-body h2{font-family:var(--sans);font-size:23px;font-weight:500;letter-spacing:-.5px;margin-bottom:16px}.article-body p{font-family:var(--serif);font-size:20px;line-height:1.8;color:var(--soft)}.takeaway{border-left:2px solid var(--orange);padding:24px 26px;background:var(--panel);margin:35px 0}.takeaway .eyebrow{color:var(--orange);display:block;margin-bottom:10px}.takeaway p{font-family:var(--serif);font-size:23px;line-height:1.5;color:var(--ink)}.sources{border-top:1px solid var(--line);padding-top:25px;margin-top:36px}.sources a{display:block;color:var(--orange);font-size:13px;margin-top:13px;text-decoration:underline;text-underline-offset:4px}.sources p{font-size:11px;margin-top:16px}.next-article{margin-top:42px;padding:22px;border:1px solid var(--line);display:block}.next-article .eyebrow{display:block;margin-bottom:10px}.next-article h3{font-family:var(--serif)}.private-page{text-align:center;max-width:770px;margin:auto;padding:76px 0 90px}.private-page .lock-illustration{margin:0 auto 30px;width:67px;height:84px}.private-page h1{margin:25px 0}.private-page>p{max-width:580px;margin:0 auto 25px;font-size:17px}.private-details{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:44px 0;padding:23px 0;gap:20px;text-align:left}.private-details h2{font-family:var(--sans);font-size:14px;letter-spacing:0;margin-bottom:10px}.private-details p{font-size:12px}.private-page .small{font-size:12px}.prose-page{max-width:760px;margin:auto;padding:70px 0 85px}.prose-page h1{margin:23px 0 35px}.prose-page p{font-family:var(--serif);font-size:22px;line-height:1.8;margin-bottom:24px;color:var(--soft)}.prose-page h2{font-size:30px;margin:32px 0 17px}.prose-page a:not(.button){color:var(--orange)}.prose-page .button{margin-top:16px}
dialog{background:#1b1d18;color:var(--ink);border:1px solid #45483c;width:min(650px,calc(100% - 32px));max-height:85vh;padding:30px}dialog::backdrop{background:#000b;backdrop-filter:blur(5px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.dialog-top h2{font-size:35px}.dialog-top button{font-size:30px}dialog label{display:block;margin-bottom:10px}dialog input{width:100%;border:1px solid #5d604f;background:#111210;padding:15px;color:var(--ink);border-radius:0}#search-count{padding:18px 0 8px}.search-result{display:block;border-bottom:1px solid var(--line);padding:15px 0}.search-result:hover h3{color:var(--orange)}.search-result h3{font-family:var(--serif);font-size:23px;margin-top:5px}.search-result p{font-size:12px;margin-top:8px}.empty-search{padding:18px 0}.noscript{padding:30px}.noscript a{text-decoration:underline}
@media(min-width:1450px){.header-inner,.site-footer{padding-left:72px;padding-right:72px}.hero{min-height:640px}}@media(max-width:1050px){.header-inner{padding:18px 28px;gap:18px}nav{gap:20px}.header-actions{gap:9px}.container{width:calc(100% - 64px)}.hero{min-height:540px}.hero h1{font-size:62px}.hero-art{margin-right:-15px}.hero-actions{gap:20px}.hero-actions .text-link{gap:12px}.article-grid{gap:20px}.card-art{height:175px}.article-card h3{font-size:24px}.reading-section{gap:35px}.private-banner{padding:30px;gap:22px}.article-layout{grid-template-columns:170px minmax(0,1fr);gap:35px}.book-card{padding:18px}.book-card h2{font-size:28px}.book-display{height:215px}}
@media(max-width:760px){.container{width:calc(100% - 40px)}.header-inner{padding:15px 20px;gap:12px}.brand{font-size:9px;gap:8px;letter-spacing:1.4px}.brand-bottom{font-size:16px}.brand-mark{font-size:31px;width:34px;height:40px}.private-link{padding:8px;border:0}.private-link span{display:none}.header-actions{gap:4px}.menu-toggle{display:grid}nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);padding:18px 25px;border-bottom:1px solid var(--line);flex-direction:column;gap:10px}nav.is-open{display:flex}nav a{padding:9px 0;font-size:15px}.hero{grid-template-columns:1fr;padding:44px 0 15px;gap:13px}.hero h1{font-size:clamp(49px,10vw,72px);letter-spacing:-2.5px}.hero .eyebrow{font-size:10px;margin-bottom:20px}.hero-description{font-size:15px;max-width:500px}.hero-footnote{margin-top:20px}.hero-art{max-width:490px;width:100%;margin:-10px auto 0;aspect-ratio:1.35}.art-caption{bottom:0;left:0;right:0}.topic-strip{grid-template-columns:1fr;margin-top:28px;margin-bottom:45px}.topic-strip a,.topic-strip a:first-child{border-right:0;border-bottom:1px solid var(--line);padding:17px 0;gap:23px}.topic-strip a:last-child{border:0}.topic-sub{display:inline;margin-left:8px}.topic-title{display:inline;font-size:14px}.topic-strip br{display:none}.section-heading{margin-bottom:25px;align-items:center}.section-heading .text-link{gap:12px;font-size:12px}.section-heading h2{font-size:35px}.article-grid{grid-template-columns:1fr;gap:35px}.card-art{height:240px}.article-card h3{font-size:30px}.article-card p{font-size:14px;max-width:500px}.latest-section{padding-bottom:48px}.section{padding:45px 0}.reading-section{grid-template-columns:1fr;gap:32px}.reading-intro p{max-width:500px;margin:15px 0 20px}.reading-intro h2 br{display:none}.book-row{gap:20px;grid-template-columns:70px 1fr 20px}.book-row h3{font-size:24px}.private-banner{grid-template-columns:1fr;padding:29px;gap:20px;margin-bottom:45px}.private-banner .lock-illustration{width:36px;height:45px}.private-banner h2{font-size:33px}.private-banner .button{justify-self:start}.about-note{grid-template-columns:1fr;gap:24px}.about-note p{font-size:25px}.site-footer{padding:32px 20px 20px}.footer-top{align-items:start;flex-direction:column;gap:20px;padding-bottom:27px}.footer-top p br{display:none}.footer-bottom{flex-direction:column;gap:12px;font-size:11px}.page-intro{padding:40px 0 25px}.page-intro h1{font-size:49px;letter-spacing:-2px}.page-intro p{font-size:16px}.archive-grid .card-art{height:225px}.result-count{width:100%;margin-left:0;padding-top:10px}.filter{padding:8px 12px}.archive-grid{padding-bottom:50px}.path-step{grid-template-columns:45px 1fr 20px;gap:14px;padding:28px 0}.path-number{font-size:35px}.path-step h2{font-size:27px}.path-step p{font-size:13px}.path-step .eyebrow{font-size:9px}.book-grid{grid-template-columns:1fr}.book-card{padding:24px}.book-card .author{min-height:0}.book-display{height:250px}.book-card h2{font-size:34px}.resource-note{flex-direction:column;padding-bottom:45px}.article-layout{grid-template-columns:1fr;padding:30px 0 55px;gap:0}.article-sidebar{display:none}.article-header h1{font-size:46px;letter-spacing:-1.8px}.article-header .lede{font-size:17px}.article-byline{flex-wrap:wrap;gap:8px 18px}.article-body p{font-size:19px}.takeaway{padding:20px}.takeaway p{font-size:21px}.private-page{padding:46px 0 55px}.private-page h1{font-size:50px;letter-spacing:-2px}.private-details{grid-template-columns:1fr;gap:25px}.private-page>p{font-size:16px}.prose-page{padding:45px 0 55px}.prose-page h1{font-size:49px;letter-spacing:-2px}.prose-page p{font-size:20px}dialog{padding:22px}.button{gap:17px}.hero-actions{gap:22px}.hero-actions .text-link{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}@media print{body{background:white;color:black}.site-header,.site-footer,.article-sidebar,.back-link,.next-article,dialog{display:none!important}.container{width:100%}.article-layout{display:block;padding:0}.article-header h1{font-size:34pt}.article-body p,.article-header .lede{color:#222}.article-body{max-width:none}.takeaway{background:#eee}.takeaway p{color:black}.sources a{color:black}.eyebrow,.article-byline{color:#555}}
/* Narrow phones: let each grid track shrink without clipping text or controls. */
.hero>*,.reading-section>*,.book-row>*,.section-heading>*{min-width:0}
@media(max-width:760px){.hero{grid-template-columns:minmax(0,1fr)}.hero h1{font-size:clamp(40px,12.5vw,72px)}.hero-actions{flex-wrap:wrap}.hero-actions .button{white-space:nowrap}.hero-actions .text-link{white-space:nowrap}.book-row{grid-template-columns:70px minmax(0,1fr) 20px}.section-heading{flex-wrap:wrap}}
@media(max-width:360px){.header-inner{gap:5px}.header-actions{gap:0}.header-actions .icon-button{min-width:34px;padding:6px}.brand-bottom{font-size:14px}.brand{font-size:8px}.brand-mark{width:29px}.hero .eyebrow{letter-spacing:1.1px;font-size:9px}.hero-actions{gap:18px}.art-caption{font-size:7px;letter-spacing:.8px}}

/* Pocket Block is the approved main mascot. The welcome lineup leads the homepage. */
.hero.mascot-hero{display:block;min-height:0;padding:16px 0 48px}
.mascot-welcome{margin:0;overflow:hidden}
.mascot-welcome img{display:block;width:min(100%,640px);height:auto;margin-inline:auto;aspect-ratio:4.2/1;object-fit:cover;object-position:center}
.mascot-welcome figcaption{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:8px 0 19px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:9px;letter-spacing:1.1px;color:var(--muted)}
.mascot-welcome figcaption span:first-child{color:var(--orange)}
.mascot-hero-copy{display:grid;grid-template-columns:1.2fr 1fr;gap:54px;align-items:center;padding-top:32px}
.mascot-hero-copy>*{min-width:0}
.mascot-hero .eyebrow{font-size:10px;letter-spacing:1.4px;margin-bottom:19px}
.mascot-hero h1{font-size:clamp(43px,4.25vw,61px);letter-spacing:-2.1px;line-height:1.13}
.mascot-hero .hero-description{margin:0 0 25px;max-width:450px}
.mascot-hero .hero-actions{flex-wrap:wrap;gap:17px 25px}
.mascot-hero .hero-footnote{font-size:10px;margin-top:23px}
@media(max-width:1050px){.mascot-hero-copy{gap:30px}.mascot-hero .hero-actions{gap:15px}.mascot-hero .hero-actions .text-link{font-size:13px}}
@media(max-width:760px){.hero.mascot-hero{padding:10px 0 15px}.mascot-welcome figcaption{padding:3px 0 12px;font-size:8px;letter-spacing:.5px}.mascot-welcome figcaption span:last-child{max-width:140px;text-align:right}.mascot-hero-copy{grid-template-columns:1fr;gap:23px;padding-top:23px}.mascot-hero h1{font-size:clamp(40px,9vw,58px);letter-spacing:-1.8px}.mascot-hero .eyebrow{font-size:8px;letter-spacing:1px;margin-bottom:17px}.mascot-hero .hero-description{font-size:15px;margin-bottom:23px}.mascot-hero .hero-actions{gap:16px 22px}.mascot-hero .hero-footnote{font-size:8px;letter-spacing:.25px;margin-top:21px}}
@media(max-width:380px){.mascot-hero h1{font-size:39px}.mascot-hero .hero-actions{gap:16px}.mascot-hero .hero-actions .text-link{font-size:12px}}

/* A compact reading mascot welcomes visitors to the library. */
.library-mascot{max-width:480px;margin:16px auto 0}
.library-mascot img{display:block;width:100%;height:auto;aspect-ratio:3/1;object-fit:contain}
.library-mascot+.library-intro{padding-top:0;padding-bottom:28px}
.library-intro .eyebrow{margin-bottom:8px}
.library-intro p{margin-top:16px}
@media(max-width:760px){.library-mascot{margin-top:12px}.library-mascot+.library-intro{padding-bottom:22px}}

/* Beginner path and thematic reading routes. */
.learning-mascot{width:min(390px,100%);margin:14px auto 0;line-height:0}
.learning-mascot img{display:block;width:100%;height:auto;aspect-ratio:3/1;object-fit:contain}
.learning-intro{padding:8px 0 27px;max-width:800px}
.learning-intro .eyebrow{margin-bottom:14px}
.learning-intro h1{font-size:clamp(38px,4.2vw,56px);letter-spacing:-1.8px}
.learning-intro p{margin-top:17px;max-width:670px;font-size:16px}
.learning-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:18px 0;color:var(--muted);font:10px var(--mono);letter-spacing:.7px}
.learning-bar .text-link{font-family:var(--sans);font-size:12px;letter-spacing:0}
.lesson-grid,.deeper-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.lesson-card,.deeper-card,.deeper-note{padding:25px;border:1px solid var(--line);background:var(--panel);min-width:0}
.lesson-card{display:flex;flex-direction:column;transition:border-color .18s,background .18s}
.lesson-card:hover{border-color:var(--orange);background:#20211b}
.lesson-top{display:flex;align-items:center;gap:18px;margin-bottom:16px}
.lesson-top>.eyebrow{font-size:9px;letter-spacing:1.2px;line-height:1.6}
.lesson-top>span:last-child:not(.eyebrow){margin-left:auto;color:var(--orange)}
.lesson-number{font:32px var(--serif);color:var(--orange)}
.lesson-card h2,.deeper-card h2,.deeper-note h2{font-size:29px;letter-spacing:-.6px;margin-bottom:14px}
.lesson-card>p,.deeper-card>p,.deeper-note>p{font-size:14px;line-height:1.75}
.lesson-action{font-size:12px;padding-top:20px;margin-top:auto;display:flex;justify-content:space-between;color:var(--orange)}
.learning-next{display:flex;justify-content:space-between;align-items:center;gap:30px;margin:35px 0 60px;padding:30px 0;border-top:1px solid var(--line)}
.learning-next h2{font-size:32px;margin:12px 0}
.learning-next p{font-size:14px;max-width:640px}
.learning-next .button{flex-shrink:0}
.deeper-grid{padding-bottom:65px;align-items:stretch}
.deeper-card{display:flex;flex-direction:column}
.deeper-card ul{padding-left:18px;font-size:13px;line-height:1.7;color:var(--soft);margin:19px 0 25px}
.deeper-card li+li{margin-top:7px}
.deeper-card li::marker{color:var(--orange)}
.deeper-reading{margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}
.deeper-reading>.eyebrow{display:block;font-size:9px;margin-bottom:9px}
.deeper-reading>.text-link{color:var(--orange);gap:15px;font-size:16px;line-height:1.5}
.deeper-book{font-size:11px;margin-top:6px}
.deeper-secondary{display:block;margin-top:14px;font-size:12px;color:var(--muted);line-height:1.65}
.deeper-secondary:hover{color:var(--orange)}
.deeper-note{background:transparent;display:flex;flex-direction:column;justify-content:center}
.deeper-note h2{margin-top:18px}
.deeper-note p+p{margin-top:20px}
.deeper-note .text-link{margin-top:25px;color:var(--orange)}
.article-body p+p{margin-top:18px}
.short-answer{padding:23px 0 4px}
.short-answer .eyebrow{color:var(--orange)}
.short-answer p{font-size:17px;line-height:1.8;color:var(--soft);margin-top:12px;max-width:680px}
.lesson-progress{display:flex;position:static;flex-direction:row;background:none;border:0;padding:0;gap:9px;margin-top:26px}
.lesson-progress a{display:grid;place-items:center;width:37px;height:34px;padding:0;border:1px solid var(--line);font:11px var(--mono)}
.lesson-progress a[aria-current=step]{border-color:var(--orange);background:var(--orange);color:var(--bg)}
.lesson-progress a:hover{border-color:var(--orange)}
.article-body .article-example{padding:24px;background:var(--panel);border:1px solid var(--line)}
.article-example .eyebrow{color:var(--orange);display:block;margin-bottom:14px}
.article-body .article-example p,.article-body .misconception p{font-family:var(--sans);font-size:16px;line-height:1.85}
.misconception p>span{color:var(--orange);font-size:13px}
.knowledge-check{border:1px solid var(--line);padding:24px}
.knowledge-check h2{font:500 21px/1.5 var(--sans);letter-spacing:-.3px;margin:12px 0 18px}
.knowledge-check summary{cursor:pointer;color:var(--orange);font-size:14px;width:fit-content}
.knowledge-check details p{font-size:15px;line-height:1.8;color:var(--soft);margin-top:15px}
.article-pagination{display:flex;position:static;flex-direction:column;gap:0;padding:0;margin-top:35px;background:none;border:0}
.article-pagination .previous-article{font-size:12px;padding:0}
.article-pagination .next-article{padding:22px;margin-top:18px;color:var(--ink)}
.article-pagination .next-article:hover{border-color:var(--orange)}
@media(min-width:761px) and (max-width:930px){.private-link span{display:none}.private-link{padding:9px}#main-nav{gap:15px}.header-inner{gap:12px}}
@media(max-width:760px){.learning-mascot{width:min(280px,100%);margin-top:12px}.learning-intro{padding:7px 0 21px}.learning-intro h1{font-size:38px;letter-spacing:-1.2px}.learning-intro .eyebrow{font-size:9px;letter-spacing:1.1px;margin-bottom:12px}.learning-intro p{font-size:15px;margin-top:14px}.learning-bar{align-items:flex-start;flex-direction:column;gap:12px}.lesson-grid,.deeper-grid{grid-template-columns:1fr;gap:15px}.lesson-card,.deeper-card,.deeper-note{padding:22px}.lesson-card h2,.deeper-card h2{font-size:28px}.lesson-top{gap:15px}.lesson-top>.eyebrow{font-size:8px}.learning-next{flex-direction:column;align-items:flex-start;margin-bottom:40px;gap:22px}.learning-next h2{font-size:30px}.lesson-progress{display:flex}.article-pagination{display:flex}.article-example{padding:20px!important}.knowledge-check{padding:20px}}
@media print{.lesson-progress,.article-pagination{display:none}.short-answer p,.article-example p,.knowledge-check p{color:#222}.article-example,.knowledge-check{background:transparent}.knowledge-check details>p{display:block!important}.short-answer .eyebrow,.misconception p>span{color:#444}}

/* Go Deeper original articles. */
.deeper-article-card h2 a:hover{color:var(--orange)}
.deeper-article-card .lesson-top{margin-bottom:17px}
.deeper-article-action{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;padding-top:23px;color:var(--orange);font-size:13px}
.deeper-article-action:hover{color:var(--ink)}
.deeper-article-action>span:last-child{font-size:20px}
.article-prerequisite{display:inline-block;color:var(--muted);font-size:12px;margin-top:19px;text-decoration:underline;text-underline-offset:4px}
.article-prerequisite:hover{color:var(--orange)}
.article-further-reading{border-top:1px solid var(--line);padding-top:27px;margin-top:35px}
.article-further-reading h2{font-size:29px;letter-spacing:-.5px;margin:13px 0 20px}
.article-book-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.article-book-link{display:block;border:1px solid var(--line);padding:18px;background:var(--panel)}
.article-book-link>span{display:flex;gap:12px;justify-content:space-between;color:var(--orange);font-size:16px;line-height:1.5}
.article-book-link small{display:block;font-size:11px;line-height:1.8;color:var(--muted);margin-top:12px}
.article-book-link:hover{border-color:var(--orange)}
@media(max-width:760px){.article-book-links{grid-template-columns:1fr}.deeper-article-card h2{font-size:27px}.article-further-reading h2{font-size:27px}}
@media print{.article-prerequisite,.article-further-reading{display:none}}

/* Simplified home navigation */
.topic-strip-two{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:760px){.topic-strip-two{grid-template-columns:1fr}}

/* A single approved lesson fills its row without empty card slots. */
.lesson-grid.single-lesson{grid-template-columns:minmax(0,1fr)}

/* Bitcoin Nook brand and the owner-approved tagline. */
.brand{min-width:0;flex-shrink:1}
.brand-mark{flex-shrink:0}
.brand-text{display:block;min-width:0}
.brand-name{display:block;font-size:21px;line-height:1.25;letter-spacing:.3px;white-space:nowrap}
.brand-tagline{display:block;max-width:250px;margin-top:4px;font-size:11px;font-weight:400;line-height:1.4;letter-spacing:0;color:var(--muted)}
.footer-top>p{max-width:290px}
@media(max-width:760px){.brand-name{font-size:18px}.brand-tagline{font-size:10px;line-height:1.35;max-width:230px}.header-actions{flex-shrink:0}}