*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:#0a0906;color:#ede8df;font:16px/1.7 Arial,Helvetica,sans-serif}a{color:inherit}img{max-width:100%;display:block}button,input{font:inherit}p{max-width:65ch}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{line-height:1.08;letter-spacing:-.045em}h1{font-size:clamp(44px,7.1vw,100px);font-weight:800;line-height:.98;margin-bottom:28px}h1 em{color:#1ecfcc;font-style:normal}h2{font-size:clamp(32px,4.5vw,56px);font-weight:600}h3{font-size:26px}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #1ecfcc;outline-offset:5px}.wrap{width:min(1280px,calc(100% - 40px));margin-inline:auto}.preview{padding:8px 20px;background:#233333;color:#e0eeee;text-align:center;font-size:11px;letter-spacing:.1em}header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:28px;border-bottom:1px solid #ffffff20}.brand{font-size:25px;letter-spacing:.12em;text-decoration:none;font-weight:800;line-height:1}.brand span{display:block;font-size:8px;letter-spacing:.19em;margin-top:9px;font-weight:400}nav{display:flex;gap:24px;font-size:12px}nav a{text-decoration:none}.hero{display:grid;gap:36px;padding-block:44px 56px}.eyebrow{font-size:11px;letter-spacing:.19em;color:#1ecfcc;font-weight:bold;margin-bottom:24px}.lead{font-size:21px;line-height:1.5}.hero-copy>p:not(.eyebrow):not(.lead){color:#c2beb7}.hero-photo{margin:0}.hero-photo img{width:100%;height:auto}.hero-photo figcaption{font-size:9px;letter-spacing:.15em;padding-top:12px;color:#aaa69e}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;background:#1ecfcc;color:#07100f;padding:18px 24px;font-size:12px;letter-spacing:.07em;font-weight:bold;text-decoration:none;border:0;cursor:pointer;min-height:52px}.button:hover{background:#ede8df}.micro{font-size:12px;color:#aaa69e;margin-top:16px}.ribbon{border-block:1px solid #ffffff25;padding:26px 20px;display:flex;justify-content:center;gap:clamp(14px,8vw,130px);font-size:clamp(10px,1.8vw,18px);letter-spacing:.1em}.editorial{padding-block:75px;border-bottom:1px solid #ffffff20;max-width:900px}.editorial h2{font-size:clamp(30px,4vw,48px);max-width:22ch}.editorial p{color:#c7c3bb}.editorial strong{color:#ede8df}.learning-item{padding:16px 0;border-bottom:1px solid #ffffff15}.book-section{display:grid;gap:46px;padding-block:80px;align-items:center}.book-cover{position:relative;width:min(100%,430px);margin:auto;background:#080e12;border:1px solid #ffffff30;box-shadow:15px 18px 0 #151a19;overflow:hidden}.book-cover img{width:100%;height:auto}.cover-title{padding:25px 26px 20px}.cover-title>span{font-size:8px;letter-spacing:.18em}.cover-title h2{font-size:clamp(25px,5.7vw,38px);line-height:.98;margin:18px 0 12px}.cover-title em{color:#1ecfcc;font-style:normal}.cover-title p{font-size:11px;line-height:1.4;margin:0}.cover-author{padding:20px 25px;font-size:16px;font-weight:bold;letter-spacing:.12em}.cover-author span{display:block;font-size:9px;letter-spacing:.3em;color:#1ecfcc;padding-top:5px}.price{font-size:64px;line-height:1.2;color:#1ecfcc;margin-block:25px}.price span{font-size:13px;color:#b8b4ad;display:block}.muted{color:#aaa69e}.curriculum{padding-block:80px}.curriculum ol{list-style:none;padding:0;margin-top:36px}.curriculum li{display:flex;gap:24px;padding:18px 0;border-bottom:1px solid #ffffff25;font-size:18px}.curriculum li span{font-size:12px;color:#1ecfcc;min-width:25px}.signup{display:grid;gap:36px;margin-block:65px;padding:35px 25px;background:#ede8df;color:#111b1a}.signup .eyebrow{color:#15625f}.signup .micro{color:#565e5c}.signup h2{font-size:clamp(34px,4vw,50px)}input[type=email]{display:block;width:100%;background:white;border:1px solid #777;padding:15px;margin:8px 0 20px;min-height:50px}label{font-size:13px}.check{display:flex;gap:12px;align-items:flex-start;line-height:1.5;margin:18px 0}.check input{width:20px;height:20px;flex-shrink:0;accent-color:#13635f}.signup button{width:100%}#form-status{font-size:14px}.faq{padding-block:30px 70px;max-width:900px}details{padding:20px 0;border-bottom:1px solid #ffffff25}summary{cursor:pointer;font-size:18px;min-height:28px}details p{margin:15px 0 0;color:#bcb8b1}footer{border-top:1px solid #ffffff25;padding-block:30px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}footer p,footer>a:last-child{font-size:11px}footer p{margin:0}.skip{position:absolute;left:15px;top:-80px;background:white;color:black;padding:12px;z-index:10}.skip:focus{top:15px}@media(min-width:800px){.wrap{width:min(1280px,calc(100% - 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.book-mockup{margin:0 auto;width:min(100%,540px)}.book-mockup img{width:100%;height:auto;aspect-ratio:1;object-fit:contain}.book-mockup figcaption{font-size:12px;color:#aaa69e;text-align:center;margin-top:12px}

/* Soft teal glow follows the transparent book silhouette. */
.book-mockup img{filter:drop-shadow(0 12px 18px rgba(30,207,204,.28)) drop-shadow(0 0 30px rgba(30,207,204,.18));}