*{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Montserrat,sans-serif;background-color:#030303;color:#eaeaea;line-height:1.8;margin:0;padding:0}.book-container{max-width:800px;margin:0 auto;padding:40px}.book-container h1{font-family:Oswald,sans-serif;color:#d4af37;font-size:2.8em;text-transform:uppercase;text-align:center;border-bottom:1px solid #333;padding-bottom:20px;margin-top:60px;margin-bottom:40px;letter-spacing:3px}.book-container h2{font-family:Oswald,sans-serif;color:#d4af37;font-size:1.8em;text-transform:uppercase;letter-spacing:2px;margin-top:60px;margin-bottom:30px;border-left:3px solid #D4AF37;padding-left:15px}.book-container h3{font-family:Montserrat,sans-serif;color:#fff;font-size:1.3em;text-transform:uppercase;margin-top:50px;margin-bottom:15px;letter-spacing:1px}.book-container p{font-size:1.15em;margin-bottom:25px;color:#ccc;font-weight:300}.book-container strong,.book-container b{color:#fff;font-weight:600}.book-container hr{border:0;height:1px;background:#222;margin:60px 0}.book-container ul,.book-container ol{font-size:1.15em;margin-bottom:30px;padding-left:30px;color:#ccc}.book-container li{margin-bottom:15px}.math-grid{display:table;width:100%;margin-top:30px}.math-col{display:table-cell;width:50%;vertical-align:top}.math-col:first-child{padding-right:30px}.math-number{font-family:Oswald,sans-serif;color:#d4af37;font-size:2.5em;font-weight:700;display:block;margin-bottom:-15px;line-height:1}.alphabet-letter{font-family:Oswald,sans-serif;color:#d4af37;font-size:2.5em;display:inline-block;width:50px;text-align:center;vertical-align:top;margin-top:-5px;line-height:1}.alphabet-desc{display:inline-block;width:calc(100% - 70px);margin-bottom:10px}.alphabet-word{color:#fff;font-family:Oswald,sans-serif;font-size:1.3em;letter-spacing:1px;display:block;margin-bottom:5px}.book-title-page{text-align:center;padding:4rem 0 1rem}.book-title-page .cover-art{display:block;width:100%;max-width:360px;height:auto;margin:0 auto 2.5rem;border-radius:4px;box-shadow:0 30px 80px #0009}.book-title-page .book-title{font-family:Oswald,sans-serif;font-size:4rem;text-transform:uppercase;letter-spacing:3px;color:#fff;margin:0 0 .5rem;line-height:1}.book-title-page .byline{font-family:Oswald,sans-serif;font-size:1.5rem;color:#d4af37;letter-spacing:4px;text-transform:uppercase;margin:0}.back-link{display:inline-block;font-family:Oswald,sans-serif;font-size:.85rem;letter-spacing:2px;text-transform:uppercase;color:#888;text-decoration:none;margin-bottom:2rem;transition:color .2s}.back-link:hover{color:#d4af37}.ebook-footer{text-align:center;margin-top:5rem;padding-top:2rem;border-top:1px solid #222;color:#666;font-family:Oswald,sans-serif;letter-spacing:1px;font-size:.9rem}.ebook-footer a{color:#888;text-decoration:none}.ebook-footer a:hover{color:#d4af37}.library{max-width:1100px;margin:0 auto;padding:5rem 2rem 6rem}.library-head{text-align:center;margin-bottom:4rem}.library-imprint,.shelf-imprint{font-family:Oswald,sans-serif;font-size:.8rem;letter-spacing:4px;text-transform:uppercase;color:#d4af37;margin:0 0 .75rem}.library-title{font-family:Oswald,sans-serif;font-size:clamp(2.5rem,7vw,4.5rem);font-weight:600;text-transform:uppercase;letter-spacing:2px;color:#fff;margin:0 0 1rem;line-height:1}.library-sub{color:#999;font-size:1.15rem;margin:0}.shelf{display:grid;grid-template-columns:repeat(3,1fr);gap:2.5rem}.shelf-item{display:flex;flex-direction:column;align-items:center;text-align:center;text-decoration:none;color:#ccc;background:#0c0c0c;border:1px solid #222;padding:2.5rem 1.75rem;border-radius:4px;transition:transform .4s cubic-bezier(.22,.61,.36,1),border-color .3s,box-shadow .4s}.shelf-item:hover{transform:translateY(-8px);border-color:#d4af37;box-shadow:0 30px 60px #00000080}.shelf-cover{width:100%;max-width:220px;height:auto;border-radius:4px;box-shadow:0 20px 50px #0009;margin-bottom:1.5rem}.shelf-title{font-family:Oswald,sans-serif;font-size:1.4rem;text-transform:uppercase;letter-spacing:1px;color:#fff;margin:0 0 .85rem;line-height:1.1}.shelf-blurb{font-size:1rem;color:#999;margin:0 0 1.5rem;flex:1;line-height:1.6}.shelf-cta{font-family:Oswald,sans-serif;font-size:.85rem;letter-spacing:2px;text-transform:uppercase;color:#d4af37}.reading-progress{position:fixed;top:0;left:0;height:3px;width:0;background:#d4af37;z-index:200;transition:width .1s linear}@media (max-width: 860px){.shelf{grid-template-columns:1fr;max-width:460px;margin:0 auto}}@media (max-width: 720px){.book-container{padding:30px 20px}.book-title-page .book-title{font-size:2.6rem}}@media print{body{background:#fff;color:#000}.book-container h1,.book-container h2,.book-container h3{color:#000;border-color:#000}.book-container p,.book-container ul,.book-container ol{color:#000}.reading-progress,.back-link,.ebook-footer{display:none!important}}