@font-face{font-family:Figtree;src:url(/fonts/Figtree.ttf)format("truetype");font-weight:300 900;font-style:normal;font-display:swap}:root{--blue:#38b6ff;--button:var(--blue);--ink:#182630;--muted:#52616c;--paper:#fff;--quiet:#f4f7f9;--line:#d4dde3}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;margin:0;font-family:Figtree,Arial,sans-serif;font-size:16px}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:500}p{line-height:1.65}h1{letter-spacing:-2px;font-size:clamp(48px,5vw,66px);line-height:1.08}h2{letter-spacing:-.85px;font-size:clamp(29px,2.9vw,37px);line-height:1.22}h3{letter-spacing:-.4px;font-size:22px}.wrap{width:min(1160px,100%);margin-inline:auto;padding-inline:40px}.header{justify-content:space-between;align-items:center;gap:28px;min-height:86px;display:flex}.brand img{width:150px;height:auto}.header nav{align-items:center;gap:26px;font-size:14px;display:flex}.header nav a{align-items:center;min-height:44px;padding-block:10px;display:flex}.header nav a:last-child{font-weight:600}.header nav a:hover,.text-link:hover,.footer a:hover{text-underline-offset:5px;text-decoration:underline}.hero{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.hero-grid{grid-template-columns:1.15fr 1fr;align-items:center;gap:68px;padding-block:56px 60px;display:grid}.edition{margin-bottom:22px;font-size:14px}.hero-description{max-width:440px;margin-top:26px;font-size:18px;line-height:1.6}.hero-offer{margin-top:30px}.hero-price{align-items:center;gap:20px;display:flex}.hero-price strong{letter-spacing:-.6px;font-size:30px;font-weight:500}.hero-price span{font-size:12px;line-height:1.4}.actions{flex-wrap:wrap;align-items:center;gap:22px;margin-top:18px;display:flex}.button{background:var(--button);color:#fff;text-align:center;border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;min-height:50px;padding:14px 22px;font-size:15px;font-weight:700;line-height:1.4;display:inline-flex}.button:hover{background:var(--button);box-shadow:0 3px 10px #18263018}.button:active{box-shadow:none}.text-link{text-underline-offset:5px;font-size:14px;text-decoration:underline}.availability{color:var(--muted);margin-top:15px;font-size:12px}.hero-book{justify-self:center;width:min(340px,100%);position:relative}.book-shadow{border:1px solid var(--line);background:#fff;position:relative;box-shadow:12px 14px 26px #18263010}.book-shadow:before{content:"";background:var(--blue);width:15px;position:absolute;top:28px;bottom:28px;left:-16px}.hero-book figcaption{text-align:center;color:var(--muted);margin-top:22px;font-size:12px}.book-intro{grid-template-columns:1fr 1.25fr;gap:80px;padding-block:62px;display:grid}.intro-body{max-width:560px}.intro-body p+p{margin-top:18px}.intro-body p{color:var(--muted)}.intro-body .lead{color:var(--ink);font-size:19px;line-height:1.6}.reading-section{background:var(--quiet)}.reading-grid{grid-template-columns:1fr 1fr;align-items:start;gap:80px;padding-block:64px;display:grid}.page-figure{width:100%;max-width:430px}.page-toggle{border:1px solid var(--line);cursor:zoom-in;text-align:left;background:#fff;width:100%;padding:0;display:block;position:relative;box-shadow:0 10px 24px #1826300b}.page-toggle span{border-top:1px solid var(--line);color:var(--ink);text-align:center;background:#fff;padding:12px 16px;font:500 13px Figtree,Arial,sans-serif;display:block}.page-figure figcaption{color:var(--muted);margin-top:16px;font-size:12px}.reading-copy h2{margin-bottom:22px}.reading-copy>p{color:var(--muted)}.reading-features{margin:24px 0 0;padding:0;list-style:none}.reading-features li{margin-bottom:20px;padding-left:0}.reading-features strong{margin-bottom:5px;font-size:16px;font-weight:600;display:block}.reading-features span{color:var(--muted);font-size:14px;line-height:1.6;display:block}.sample-download{border-top:1px solid var(--line);margin-top:28px;padding-top:22px}.sample-download p{color:var(--muted);font-size:14px}.sample-download strong{color:var(--ink);font-weight:600}.sample-download .button{margin-top:18px}.small{color:var(--muted);font-size:13px;line-height:1.6}.sample-download .small{margin-top:12px;font-size:12px}.contents-section{padding-block:64px}.contents-heading{grid-template-columns:1fr 1.25fr;align-items:start;gap:90px;margin-bottom:30px;display:grid}.contents-heading p{max-width:460px;color:var(--muted);font-size:15px}.contents-part{border-top:1px solid var(--line)}.contents-part:last-child{border-bottom:1px solid var(--line)}.contents-part summary{cursor:pointer;align-items:center;gap:26px;padding-block:24px;list-style:none;display:flex}.contents-part summary::-webkit-details-marker{display:none}.contents-part summary>div{flex:1}.contents-part summary p{color:var(--muted);margin-top:7px;font-size:14px}.part-range{color:var(--muted);font-size:13px}.expand{flex:0 0 16px;width:16px;height:16px;display:block;position:relative}.expand:before,.expand:after{content:"";background:var(--ink);width:16px;height:2px;position:absolute;top:7px;left:0}.expand:after{transform:rotate(90deg)}.contents-part[open] .expand:after{transform:none}.contents-part ol{max-width:720px;margin:0 0 24px;padding-left:30px;line-height:1.7}.contents-part li{color:var(--muted);padding:7px 0 7px 10px;font-size:15px}.contents-part li::marker{color:var(--ink)}.audience-section{border-block:1px solid var(--line);background:#fff}.audience-grid{grid-template-columns:1fr 1.25fr;gap:90px;padding-block:48px;display:grid}.audience-grid p+p{margin-top:14px}.audience-grid .small{color:var(--muted)}.offer-section{grid-template-columns:1fr 1fr;align-items:center;gap:70px;padding-block:62px;display:grid}.offer-description .edition{color:var(--muted);margin-bottom:14px}.offer-description p:last-child{max-width:440px;color:var(--muted);margin-top:20px}.purchase{border-left:4px solid var(--blue);padding-left:50px}.price{letter-spacing:-1.6px;font-size:48px;line-height:1.2}.purchase>p:nth-child(2){color:var(--muted);margin:10px 0 22px;font-size:14px}.purchase .small{max-width:340px;margin-top:14px}.faq-section{border-top:1px solid var(--line);grid-template-columns:1fr 1.25fr;gap:90px;padding-block:50px 72px;display:grid}.faq-list details{border-bottom:1px solid var(--line);padding-block:20px}.faq-list details:first-child{padding-top:0}.faq-list summary{cursor:pointer;font-size:16px;line-height:1.5}.faq-list details p{color:var(--muted);margin-top:14px;font-size:14px}.faq-list a{text-decoration:underline}.footer{border-top:1px solid var(--line);align-items:center;gap:36px;padding-block:28px;font-size:12px;display:flex}.footer .brand img{width:120px}.footer>p{color:var(--muted);flex:1}.footer>div{gap:20px;display:flex}.footer>div a{align-items:center;min-height:44px;display:flex}.skip{z-index:10;background:#fff;padding:12px;position:absolute;top:-100px;left:20px}.skip:focus{top:12px}:focus-visible{outline:3px solid var(--ink);outline-offset:5px}@media (max-width:950px){.hero-grid{gap:40px}.hero-book{width:300px}h1{font-size:54px}.book-intro,.contents-heading,.audience-grid,.faq-section{gap:40px}.reading-grid{gap:45px}.wrap{padding-inline:30px}}@media (max-width:760px){.wrap{padding-inline:23px}.header{flex-wrap:wrap;gap:20px;min-height:82px;padding-block:18px}.header nav{gap:18px;font-size:13px}.brand img{width:125px}.hero-grid{grid-template-columns:1fr;gap:38px;padding-block:36px 38px}.edition{margin-bottom:18px}h1{letter-spacing:-1.4px;font-size:clamp(40px,10.5vw,60px)}.hero-description{max-width:490px;font-size:17px}.hero-book{justify-self:center;width:260px}.hero-offer{margin-top:24px}.hero-price strong{font-size:29px}.actions{gap:18px}.book-intro,.reading-grid,.contents-heading,.audience-grid,.offer-section,.faq-section{grid-template-columns:1fr;gap:27px}.book-intro,.contents-section{padding-block:46px}.intro-body .lead{font-size:18px}.reading-grid{gap:34px;padding-block:42px}.page-figure{max-width:370px;margin:auto}.contents-heading{gap:17px;margin-bottom:23px}.contents-part summary{gap:14px;padding-block:20px}.contents-part h3{font-size:21px}.contents-part summary p{font-size:13px}.part-range{display:none}.contents-part li{font-size:14px}.audience-grid{padding-block:38px}.offer-section{gap:30px;padding-block:45px}.purchase{padding-left:20px}.price{font-size:44px}.faq-section{padding-block:40px 46px}.footer{flex-wrap:wrap;gap:18px}.footer>p{flex:auto}.footer>div{width:100%}h2{letter-spacing:-.8px;font-size:32px}}@keyframes faq-fade{0%{opacity:0}to{opacity:1}}.faq-list details[open] p{animation:.22s ease-out faq-fade}.faq-list summary{justify-content:space-between;align-items:center;gap:20px;list-style:none;display:flex}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"";border-bottom:1.5px solid;border-right:1.5px solid;flex:0 0 8px;width:8px;height:8px;margin-right:4px;transition:transform .22s ease-out;transform:rotate(-45deg)}.faq-list details[open] summary:after{animation:.22s ease-out indicator-open;transform:rotate(45deg)}.faq-list details:not([open]) summary:after{animation:.22s ease-out indicator-close}@keyframes indicator-open{0%{opacity:.25}to{opacity:1}}@keyframes indicator-close{0%{opacity:.25}to{opacity:1}}.expand:before{opacity:.65;transition:opacity .22s ease-out}.expand:after{opacity:1;transition:transform .22s ease-out,opacity .22s ease-out}.contents-part[open] .expand:before{opacity:1}.contents-part[open] .expand:after{opacity:0;transform:rotate(0)}.contents-part[open] ol{animation:.22s ease-out faq-fade}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.faq-list details[open] p,.contents-part[open] ol,.faq-list details summary:after{animation:none}.faq-list summary:after,.expand:before,.expand:after{transition:none}}.page-dialog{overscroll-behavior:contain;border:1px solid var(--line);width:min(850px,100% - 28px);max-height:90dvh;color:var(--ink);background:#fff;border-radius:8px;padding:0 24px 24px}.page-dialog::backdrop{background:#182630b3}.dialog-tools{border-bottom:1px solid var(--line);z-index:1;background:#fff;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px;padding:16px 0;display:flex;position:sticky;top:0}.dialog-tools p{font-size:14px}.dialog-tools button{background:var(--button);color:#fff;cursor:pointer;border:0;border-radius:5px;min-height:44px;padding:10px 20px;font:700 14px Figtree,Arial,sans-serif}.page-dialog img{width:100%;height:auto}.page-toggle:hover span{background:var(--quiet)}@media (max-width:760px){.page-dialog{padding-inline:12px}.dialog-tools p{font-size:12px}.hero-book{width:min(260px,85%)}.book-shadow:before{width:9px;left:-10px}.hero-description{font-size:16px}.contents-part summary{padding-bottom:42px;position:relative}.part-range{font-size:12px;display:block;position:absolute;bottom:15px;left:0}}.dialog-tools button:hover{box-shadow:0 3px 10px #18263018}.dialog-tools button:active{box-shadow:none}.offer-support{color:var(--muted);margin-top:14px;font-size:13px}.offer-support a{text-underline-offset:3px;text-decoration:underline}.privacy-control{padding-block:0 24px}.privacy-control button{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;min-height:44px;font-size:13px;text-decoration:underline}.privacy-banner{z-index:100;border:1px solid var(--line);width:min(920px,100% - 32px);max-height:70dvh;color:var(--ink);background:#fff;border-radius:6px;align-items:center;gap:24px;padding:20px 24px;display:flex;position:fixed;bottom:16px;left:50%;overflow:auto;transform:translate(-50%);box-shadow:0 6px 32px #18263026}.privacy-banner p{margin-top:6px;font-size:14px;line-height:1.5}.privacy-banner strong{font-size:15px}.privacy-banner details{margin-top:8px;font-size:13px}.privacy-banner summary{cursor:pointer}.privacy-banner a{text-decoration:underline}.privacy-actions{flex-wrap:wrap;flex-shrink:0;gap:8px;display:flex}.privacy-actions button{border:1px solid var(--line);color:var(--ink);font:inherit;cursor:pointer;background:#fff;border-radius:4px;min-height:44px;padding:8px 16px;font-size:14px}.privacy-actions button:hover{background:var(--quiet)}@media (max-width:760px){.privacy-banner{padding:16px;display:block;bottom:8px}.privacy-actions{margin-top:12px}}