@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@400;500;600;700;800&family=Roboto+Condensed:wght@400;700&display=swap');
:root{--paper:#faf9f5;--ink:#202430;--muted:#676b76;--line:#e1e2dd;--blue:#345ccb;--coral:#ff5e63;--mint:#e9f3df;--side:304px}*{box-sizing:border-box}html{scroll-padding-top:108px}body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,Helvetica,sans-serif;font-size:18px;line-height:1.75}button,input{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--blue);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.skip{position:fixed;top:-100px;z-index:999;background:white;padding:12px}.skip:focus{top:0}header{height:92px;display:flex;align-items:center;padding:0 36px;gap:32px;border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:30}.logo{display:flex;width:232px;flex-shrink:0}.logo img{width:184px;height:auto;max-height:45px;object-fit:contain}.bookname{font-family:Raleway,Arial,sans-serif;color:var(--ink);text-decoration:none;font-size:18px;letter-spacing:-.5px}.bookname strong{color:var(--coral);font-weight:800}.bookname span{color:var(--muted);font-size:14px;margin-left:9px;letter-spacing:0}.menubtn{display:none}.layout{display:grid;grid-template-columns:var(--side) minmax(0,850px) minmax(150px,210px);max-width:1480px;margin:auto}#sidebar{height:calc(100dvh - 92px);overflow:auto;position:sticky;top:92px;border-right:1px solid var(--line);padding:32px 24px 20px;background:var(--paper);scrollbar-width:thin}.overline{font-size:10px;letter-spacing:1.7px;text-transform:uppercase;font-weight:700;color:var(--muted)}.side-top h2{font-family:Raleway,Arial,sans-serif;font-size:21px;line-height:1.3;letter-spacing:-.6px;margin:6px 0 24px}.side-top label{display:block;font-size:12px;font-weight:bold;margin-bottom:6px}.searchwrap{position:relative}.searchwrap input{width:100%;font-size:14px;border:1px solid #ccd0cf;background:white;border-radius:4px;padding:10px 32px 10px 12px}.searchwrap span{position:absolute;right:10px;top:3px;font-size:25px;pointer-events:none}#chapters{margin-top:26px}details{border-top:1px solid var(--line);padding:15px 0}summary{font-size:13px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:8px;line-height:1.5}summary::-webkit-details-marker{display:none}summary:after{content:'+';font-size:18px;line-height:1}details[open]>summary:after{content:'−'}.chapter-links{padding-top:10px}.chapter-link{display:block;font-size:13px;line-height:1.55;padding:8px 11px;margin:3px -3px;color:#535964;text-decoration:none;border-left:2px solid transparent}.chapter-link:hover{color:var(--blue);background:#f0f1ec}.chapter-link.active{color:var(--blue);background:#e9eefb;border-left-color:var(--blue);font-weight:700}.side-bottom{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px}.empty{font-size:14px}main{min-width:0;padding:38px 56px 0}.article-top{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:11px;color:var(--muted);margin-bottom:32px}#bookmark{border:0;background:transparent;color:var(--muted);padding:5px 0;white-space:nowrap;font-size:11px}#bookmark[aria-pressed=true]{color:var(--blue)}.article{max-width:68ch;overflow-wrap:anywhere}.article h1{font-family:Raleway,Arial,sans-serif;font-weight:800;font-size:clamp(35px,3.4vw,56px);line-height:1.11;letter-spacing:-2px;margin:0 0 36px;max-width:18ch}.article h1:after{content:'';display:block;width:58px;height:5px;background:var(--coral);margin-top:25px}.article h2,.article h3,.article h4{font-family:Raleway,Arial,sans-serif;line-height:1.3;letter-spacing:-.6px;scroll-margin-top:110px}.article h2{font-size:28px;margin:52px 0 19px}.article h3{font-size:22px;margin:35px 0 15px}.article h4{font-size:19px;margin:25px 0 10px}.article p{margin:0 0 23px}.article>.lead,.article>h1+p{font-size:21px;line-height:1.65;color:#424a5c}.article strong{font-weight:700}.article ul,.article ol{padding-left:25px;margin:15px 0 28px}.article li{padding-left:5px;margin:9px 0}.article img{max-width:100%;height:auto}.article iframe,.article video{max-width:100%}.article blockquote{margin:30px 0;border-left:4px solid var(--coral);padding:6px 24px;color:#424a5c}.prompt-box-container,.prompt-box{background:#edf1fb;border:1px solid #d8e0f3;border-top:4px solid var(--blue);margin:28px 0 36px;position:relative;border-radius:0 0 6px 6px;overflow:hidden}.prompt-label{font-size:12px;font-weight:700;color:var(--blue);padding:16px 22px 0}.code-wrapper, .prompt-text{padding:24px;max-height:340px;overflow:auto;scrollbar-width:thin}.code-wrapper code,.prompt-text{font-family:Arial,Helvetica,sans-serif;font-size:15px;line-height:1.8;white-space:pre-wrap;color:#27344d;display:block}.prompt-text p{margin-bottom:16px}.prompt-box.expanded .prompt-text,.prompt-box-container.expanded .code-wrapper{max-height:none}.book-button,.copy-btn{margin:0!important;border:0;border-top:1px solid #d8e0f3;background:#e0e8fa;color:#284baf;font-size:14px;font-weight:700;padding:15px 24px;width:100%;text-align:left;display:block}.book-button:hover,.copy-btn:hover{background:#d3dffa}.prompt-toggle{border:0;background:transparent;color:var(--blue);padding:10px 24px;font-size:12px;text-decoration:underline}.page-nav{clear:both;display:grid;grid-template-columns:1fr 1fr;gap:30px;border-top:1px solid var(--line);padding:25px 0;margin-top:64px}.page-nav a{text-decoration:none;color:var(--ink);font-size:15px;line-height:1.5}.page-nav a:last-child{text-align:right}.page-nav small{display:block;color:var(--muted);font-size:11px;margin-bottom:8px}.bottom-cta{background:var(--mint);padding:28px 30px;margin:30px 0 50px;border-radius:4px}.bottom-cta h3{font-family:Raleway,Arial,sans-serif;font-size:20px;margin:0 0 17px}.checkmark-item{font-size:14px;line-height:1.65;display:flex;gap:11px;margin:12px 0}.checkmark-item .check{font-size:13px}.checkmark-list{display:grid;gap:3px}footer{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding:24px 0;display:flex;gap:12px;justify-content:space-between}footer a{color:inherit}.outline{padding:45px 20px 0 8px;position:sticky;top:92px;height:calc(100dvh - 92px);font-size:12px}#outline{margin-top:17px;border-left:1px solid var(--line);max-height:60vh;overflow:auto}#outline a{display:block;color:var(--muted);text-decoration:none;line-height:1.55;padding:6px 0 6px 15px;margin-bottom:6px;font-size:11px}#outline a:hover{color:var(--blue)}.reading{margin-top:30px;color:var(--muted);font-size:10px}.track{height:3px;background:var(--line);margin-top:9px}#progress{height:3px;background:var(--coral);width:0}#back-top{border:0;padding:14px 0;background:none;font-size:11px;color:var(--muted)}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:10px 20px;font-size:14px;border-radius:4px;z-index:100;display:none}.toast.show{display:block}[hidden]{display:none!important}
@media(min-width:1550px){:root{--side:320px}main{padding-right:70px;padding-left:70px}}@media(max-width:1200px){.layout{grid-template-columns:280px minmax(0,1fr)}.outline{display:none}main{padding:32px 45px 0}.logo{width:200px}}@media(max-width:760px){body{font-size:17px;line-height:1.75}header{height:74px;padding:0 20px;gap:15px}.logo{width:auto;flex:1}.logo img{width:146px}.bookname{display:none}.menubtn{display:flex;align-items:center;gap:10px;background:transparent;border:1px solid #cdd1cf;border-radius:4px;padding:7px 11px;font-size:13px}.layout{display:block}#sidebar{position:fixed;top:74px;left:0;bottom:0;width:min(340px,88vw);height:calc(100dvh - 74px);z-index:40;display:none;padding:25px}.menu-open #sidebar{display:block}.shade{position:fixed;inset:74px 0 0;background:#20243055;z-index:35}.menu-open{overflow:hidden}main{padding:28px 23px 0}.article-top{font-size:10px;margin-bottom:27px;gap:8px}#bookmark{font-size:10px}.article h1{font-size:39px;letter-spacing:-1.6px;line-height:1.13;margin-bottom:29px}.article h2{font-size:25px;margin-top:40px}.article h3{font-size:21px}.article>h1+p,.article>.lead{font-size:19px}.article img[style*="float"]{float:none!important;display:block!important;margin:20px auto!important}.code-wrapper,.prompt-text{padding:20px;font-size:14px}.code-wrapper code{font-size:14px}.page-nav{gap:18px;margin-top:42px}.page-nav a{font-size:13px}.bottom-cta{padding:22px}.checkmark-item{font-size:13px}footer{font-size:10px}.toast{width:max-content;max-width:90vw;text-align:center}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{header,#sidebar,.outline,.article-top,.page-nav,footer{display:none}.layout{display:block}main{padding:0}.code-wrapper,.prompt-text{max-height:none}.book-button,.copy-btn,.prompt-toggle{display:none}body{background:white}}

/* Reader refinement: preserve the supplied image dimensions and book typography. */
:root{--hbh-green:#8ec63f;--hbh-blue:#577df3;--hbh-pink:#ff5e63;--hbh-body:#474c63;--hbh-dark:#202430;--highlight:#dcebcf;--paper:#fafaf8;--side:292px}
body{font-family:'Roboto Condensed',Arial,sans-serif;font-size:20px;line-height:1.55;color:#474c63}
.layout{grid-template-columns:var(--side) minmax(0,840px);max-width:1132px}
header{height:80px;padding:0 32px}.logo{width:228px}.logo img{width:176px}
#sidebar{top:80px;height:calc(100dvh - 80px);padding:30px 22px 24px}
.side-top h2{font-weight:500;font-size:23px;color:#344b24;margin:7px 0 22px}
.overline{font-size:11px;letter-spacing:1px}.side-top label{font-size:14px}.searchwrap input{font-size:16px}
summary{font-size:17px;font-weight:400;color:#202430}.chapter-link{font-size:16px;line-height:1.45;padding:9px 12px}.chapter-link.active{background:#edf3e5;border-left-color:#8ec63f;color:#3b5b23}
.chapter-meta{display:block;font-size:12px;color:#727965;margin-bottom:2px;font-weight:400}.side-bottom{font-size:12px}
main{padding:34px 58px 0}.article{max-width:65ch}.article-top{margin-bottom:25px;font-size:13px}#bookmark{display:none}
.article h1{font-size:40px;line-height:1.2;font-weight:600;letter-spacing:-1.1px;max-width:none;margin-bottom:29px;color:#202430}
.article h1:after{height:2px;width:72px;background:#8ec63f;margin-top:20px}
.article h2{font-size:29px;line-height:1.3;font-weight:500;letter-spacing:-.65px;margin:40px 0 17px;color:#202430}
.article h3{font-size:23px;font-weight:600;line-height:1.35;margin:32px 0 15px;color:#202430}
.article h4{font-size:21px}.article p{margin-bottom:20px}.article>.lead,.article>h1+p{font-size:21px;line-height:1.55}
.article mark,.article .placeholder{background:var(--highlight);color:inherit;padding:0 .08em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.article img{height:auto;vertical-align:middle}.article img.book-illustration{max-height:300px;object-fit:contain}.article img.book-icon{max-height:48px}
.article img.book-icon[style*='float']{float:left!important;display:inline-block!important;margin:3px 10px 3px 0!important}
.article .illustration-group{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:16px;margin:28px 0!important}.illustration-group img{width:100px;max-width:27%!important;margin:0!important;max-height:190px;object-fit:contain}
.prompt-box-container,.prompt-box{background:#fff;border:1px solid #d9e1df;border-left:4px solid #8ec63f;border-radius:3px;margin:25px 0 30px}
.prompt-label{font-size:16px;color:#344b24;padding:18px 22px 0}.code-wrapper,.prompt-text{padding:22px;max-height:360px}.code-wrapper code,.prompt-text{font-family:Raleway,Arial,sans-serif;font-size:16px;line-height:1.75;color:#474c63}
.book-button,.copy-btn{font-family:'Roboto Condensed',Arial,sans-serif;background:#edf3e5;border-top:1px solid #dbe5d0;font-size:17px;color:#354d23;padding:13px 22px;line-height:1.4}.book-button:hover,.copy-btn:hover{background:#dcebcf}.prompt-toggle{font-size:14px;color:#354d23}.prompt-box.expanded .prompt-text,.prompt-box-container.expanded .code-wrapper{overflow:visible}
.outline{display:none}.bottom-cta{margin:30px 0 40px}.bottom-cta h3{font-size:21px}.checkmark-item{font-size:16px}.page-nav{margin-top:45px}.page-nav a{font-size:17px}.page-nav small{font-size:13px}footer{font-size:13px}
@media(min-width:1550px){main{padding-left:58px;padding-right:58px}}
@media(max-width:1200px){.layout{grid-template-columns:270px minmax(0,1fr);max-width:1080px}main{padding:30px 42px 0}.logo{width:210px}}
@media(max-width:760px){body{font-size:19px;line-height:1.6}header{height:74px;padding:0 20px}.logo{width:auto}.logo img{width:146px}.layout{display:block}#sidebar{top:74px;height:calc(100dvh - 74px);padding:25px}.chapter-link{font-size:17px}summary{font-size:18px}main{padding:27px 23px 0}.article-top{font-size:12px;margin-bottom:24px}.article h1{font-size:32px;letter-spacing:-.7px;line-height:1.2}.article h2{font-size:26px;margin-top:34px}.article h3{font-size:22px}.article>.lead,.article>h1+p{font-size:20px}.article img.book-illustration{max-height:240px;max-width:90%}.code-wrapper code,.prompt-text{font-size:15px;line-height:1.75}.code-wrapper,.prompt-text{padding:18px}.page-nav a{font-size:16px}.page-nav small{font-size:12px}.checkmark-item{font-size:16px}footer{font-size:12px}.illustration-group img{max-height:150px}}

/* HvabeHager header and the original playful chapter cue. */
.site-header{height:84px;background:#fff;padding:0 3.5%;border-bottom:0;gap:24px;justify-content:space-between;color:#202430}
.site-header .logo{width:auto;flex-shrink:0}.site-header .logo img{width:148px;max-height:none}
.site-header .bookname{font-family:Raleway,Arial,sans-serif;font-size:17px;font-weight:500;line-height:1.35;letter-spacing:-.4px;flex:1;text-align:center;white-space:nowrap}.site-header .bookname span{font-size:inherit;color:inherit;margin-left:0}
.site-nav{font-family:Raleway,Arial,sans-serif;font-size:17px;line-height:1.4;flex-shrink:0}.header-links{display:flex;align-items:center;gap:30px}.header-links>a{color:#474c63;text-decoration:none;white-space:nowrap}.header-links>a:hover{color:#5c831e}.header-links .contact-link{background:#8ec63f;color:#fff;padding:12px 21px;border-radius:20px}.header-links .contact-link:hover{background:#78ac2e;color:#fff}
.services-menu{position:relative;padding:0;border:0}.services-menu summary{font-family:Raleway,Arial,sans-serif;font-size:17px;font-weight:400;gap:12px;align-items:center;white-space:nowrap;color:#474c63}.services-menu summary:after{content:'⌄';color:#8ec63f;font-size:18px}.services-menu[open]>summary:after{content:'⌃'}.services-links{position:absolute;right:0;top:38px;background:#fff;border:1px solid #e1e2dd;padding:20px 24px;min-width:300px;box-shadow:0 9px 24px #20243014;font-size:15px}.services-links strong{display:block;color:#39402e;font-size:13px;margin:12px 0 6px}.services-links strong:first-child{margin-top:0}.services-links a{display:block;color:#474c63;padding:7px 0;text-decoration:none}.services-links a:hover{color:#5c831e}.header-menu-toggle{display:none}
#sidebar{top:84px;height:calc(100dvh - 84px)}.chapter-heading{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-bottom:20px}.chapter-heading h2{font-weight:400;font-size:25px;color:#75a82c;line-height:1.2;margin:0}.chapter-heading img{width:37px;height:58px;object-fit:contain;transform:rotate(8deg)}
.chapter-link.active{color:#557d22;background:#f0f6e8;border-left-color:#8ec63f}.chapter-link.active .chapter-meta{color:#648e29}.illustration-group img{width:145px;max-width:29%!important;max-height:235px}.article img.book-illustration{max-height:340px}
@media(min-width:761px) and (max-width:1150px){.site-header{gap:18px}.site-header .bookname{white-space:normal;font-size:16px;max-width:270px}.header-links{gap:19px}.site-nav,.services-menu summary{font-size:15px}.header-links .contact-link{padding:11px 16px}}
@media(max-width:950px){.site-header{height:94px;flex-wrap:wrap;align-content:center;padding:10px 24px;gap:7px 18px}.site-header .logo{order:1}.site-header .logo img{width:148px}.site-header .bookname{order:4;flex-basis:100%;font-size:14px;text-align:left;white-space:normal;max-width:none}.site-nav{order:3}.header-menu-toggle{display:block;background:transparent;border:0;color:#202430;font-size:23px;line-height:1;padding:7px;min-width:38px;min-height:38px}.header-links{display:none;position:absolute;top:94px;left:0;right:0;padding:24px;background:white;box-shadow:0 12px 20px #20243014;max-height:75vh;overflow:auto;align-items:stretch;gap:18px}.site-nav.is-open .header-links{display:flex;flex-direction:column}.header-links>a{padding:6px 0}.header-links .contact-link{align-self:flex-start;padding:10px 22px}.services-links{position:static;border:0;border-left:2px solid #8ec63f;margin:15px 0;padding:0 0 0 16px;box-shadow:none;min-width:0}.services-menu summary{justify-content:flex-start}.services-menu{width:100%}#sidebar{top:94px;height:calc(100dvh - 94px)}}
@media(max-width:760px){.site-header{padding:9px 20px;gap:6px 12px}.site-header .bookname{display:block}.site-header .logo{flex:1}.site-header .menubtn{order:2;font-size:13px;padding:5px 9px;min-height:36px}.site-header .logo img{width:132px}.shade{top:94px}.chapter-heading h2{font-size:26px}.chapter-heading img{width:37px}.illustration-group img{width:115px;max-height:180px}.article img.book-illustration{max-height:290px}}
@media(max-width:760px){.site-header{height:104px;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:38px auto;align-content:center;gap:5px 12px}.site-header .logo{grid-column:1;grid-row:1}.site-header .site-nav{grid-column:2;grid-row:1;justify-self:end}.site-header .bookname{grid-column:1;grid-row:2;font-size:13px;text-align:left;white-space:normal}.site-header .menubtn{grid-column:2;grid-row:2;justify-self:end}.header-links{top:104px}#sidebar{top:104px;height:calc(100dvh - 104px)}.shade{top:104px}html{scroll-padding-top:125px}.article h2,.article h3,.article h4{scroll-margin-top:125px}}

/* Typography aligned with the original reading scale. */
body{font-size:18px;line-height:1.6}
.article h1{font-size:36px;font-weight:400;line-height:1.22;letter-spacing:-.8px;margin-bottom:25px}
.article>.lead,.article>h1+p{font-size:18px;line-height:1.6}
.article h2{font-size:23px;font-weight:700;line-height:1.35;letter-spacing:-.4px;margin:34px 0 16px}
.article h3{font-size:21px;font-weight:700;letter-spacing:-.3px;margin:28px 0 14px}
.article h4{font-size:19px}.article p{margin-bottom:18px}
#chapters summary{font-size:16px}.chapter-link{font-size:15px;line-height:1.5}.chapter-meta{font-size:12px}
.chapter-heading h2{font-size:24px}.chapter-heading img{width:34px;height:54px;transform:none;flex-shrink:0}
.code-wrapper code,.prompt-text{font-size:15px;line-height:1.75}
@media(max-width:760px){body{font-size:17px;line-height:1.6}.article h1{font-size:30px;letter-spacing:-.6px}.article>.lead,.article>h1+p{font-size:17px;line-height:1.6}.article h2{font-size:22px;line-height:1.35}.article h3{font-size:20px}.article h4{font-size:18px}.chapter-link{font-size:16px}#chapters summary{font-size:17px}.chapter-heading h2{font-size:24px}.chapter-heading img{width:34px;height:54px}}

.side-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.logout-btn{border:0;background:none;color:#577040;text-decoration:underline;font-size:14px;padding:5px;cursor:pointer}.reader-greeting{font-size:14px}

.search-snippet{display:block;font-size:.88em;font-weight:400;line-height:1.45;color:#555b68;margin-top:5px}#search-status{font-size:15px;margin:0 8px 10px}#search-status:empty{display:none}.login-help{font-size:16px;line-height:1.5;overflow-wrap:anywhere}