:root{--navy:#0c315c;--navy2:#061b34;--gold:#bd8740;--gold2:#d49b4d;--cream:#fbf7f0;--ink:#152238;--muted:#687386;--line:#e1e6ed;--soft:#f7f8fa;--white:#fff;--green:#16825a;--danger:#a63e35;--shadow:0 18px 45px rgba(12,49,92,.11)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Inter,Arial,sans-serif}a{text-decoration:none;color:inherit}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}.btn{min-height:45px;display:inline-flex;align-items:center;justify-content:center;padding:11px 21px;border:1px solid transparent;border-radius:7px;font-size:13px;font-weight:750}.btn-primary{color:#fff;background:var(--navy)}.btn-outline{color:var(--navy);background:#fff;border-color:var(--navy)}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand img{width:74px;height:74px;object-fit:contain}.main-nav{display:flex;gap:27px}.main-nav a{position:relative;padding:29px 0;font-size:13px;font-weight:650}.main-nav a.active,.main-nav a:hover{color:var(--gold)}.main-nav a.active:after{position:absolute;left:0;right:0;bottom:18px;height:2px;content:"";background:var(--gold)}.nav-actions{display:flex;gap:9px}.menu-toggle{display:none;width:43px;height:43px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:7px}.menu-toggle span{display:block;height:2px;margin:5px;background:var(--navy)}
.detail-hero{padding:32px 0 60px;color:#fff;background:radial-gradient(circle at 84% 12%,rgba(189,135,64,.34),transparent 29%),linear-gradient(135deg,var(--navy2),var(--navy))}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:31px;color:rgba(255,255,255,.55);font-size:8px}.breadcrumbs strong{color:rgba(255,255,255,.82)}.hero-grid{display:grid;grid-template-columns:310px 1fr;align-items:center;gap:55px}.hero-book{position:relative;height:365px;display:grid;place-items:center}.book-shadow{position:absolute;width:215px;height:30px;bottom:18px;background:rgba(0,0,0,.35);border-radius:50%;filter:blur(12px)}.book-cover{position:relative;z-index:1;width:225px;height:320px;display:flex;flex-direction:column;padding:35px 24px 24px;background:linear-gradient(145deg,#0b3f70,#06172d);border-radius:5px;box-shadow:18px 20px 34px rgba(0,0,0,.3);transform:rotate(-3deg)}.book-cover:after{position:absolute;width:190px;height:190px;right:-95px;bottom:-95px;content:"";border:1px solid rgba(255,255,255,.15);border-radius:50%}.book-cover .series{font-size:7px;letter-spacing:.12em}.book-cover h1{margin:62px 0 12px;font:800 29px/1.05 Manrope;text-transform:uppercase}.book-cover p{margin:0;color:rgba(255,255,255,.68);font-size:8px}.book-cover b{margin-top:auto;font-size:9px;letter-spacing:.14em}.hero-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:15px}.hero-tags span{padding:6px 9px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.13);border-radius:99px;font-size:7px;font-weight:700}.hero-copy h2{margin:0;font:800 clamp(38px,5vw,59px)/1.05 Manrope;letter-spacing:-.05em}.hero-copy>p{max-width:720px;margin:18px 0 0;color:rgba(255,255,255,.7);font-size:14px;line-height:1.7}.hero-meta{display:flex;flex-wrap:wrap;gap:17px;margin-top:19px;color:rgba(255,255,255,.68);font-size:8px}.hero-meta .rating{color:var(--gold2)}.hero-meta u{color:#fff}.author{display:flex;align-items:center;gap:9px;margin-top:17px}.author>span{width:31px;height:31px;display:grid;place-items:center;color:var(--navy);background:var(--gold2);border-radius:50%;font-size:8px;font-weight:800}.author p{margin:0;font-size:8px}.author strong{color:var(--gold2)}.no-cert{display:flex;align-items:center;gap:10px;max-width:355px;margin-top:19px;padding:11px 13px;color:#714026;background:#fff3e1;border:1px solid #ecd1a8;border-radius:8px}.no-cert>span{width:27px;height:27px;display:grid;place-items:center;color:#fff;background:var(--gold);border-radius:50%;font-size:10px;font-weight:800}.no-cert strong,.no-cert small{display:block}.no-cert strong{font-size:9px}.no-cert small{margin-top:3px;font-size:7px}
.details-section{padding:42px 0 80px;background:var(--soft)}.details-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:28px}.details-content{display:grid;gap:18px}.content-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:11px}.content-card h2{margin:0 0 19px;color:var(--navy);font:800 22px Manrope}.eyebrow{display:block;margin-bottom:7px;color:var(--gold);font-size:8px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.highlights-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}.highlights p{display:flex;gap:9px;margin:0;color:#505a6b;font-size:9px;line-height:1.6}.highlights p span{color:var(--green);font-weight:800}.description p{color:#505a6b;font-size:9px;line-height:1.8}.more-copy{display:none}.more-copy.open{display:block}.description button{padding:0;color:var(--navy);background:transparent;border:0;font-size:8px;font-weight:800}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-head h2{margin:0}.section-head>span{color:var(--muted);font-size:8px}.contents ol{margin:0;padding:0;list-style:none;border:1px solid var(--line)}.contents li{display:grid;grid-template-columns:40px 1fr;gap:12px;padding:14px;border-bottom:1px solid var(--line)}.contents li:last-child{border:0}.contents li>span{width:31px;height:31px;display:grid;place-items:center;color:var(--navy);background:var(--cream);border-radius:6px;font-size:8px;font-weight:800}.contents strong,.contents small{display:block}.contents strong{font-size:9px}.contents small{margin-top:4px;color:var(--muted);font-size:7px}.detail-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.detail-grid>div{padding:15px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.detail-grid span,.detail-grid strong{display:block}.detail-grid span{color:var(--muted);font-size:7px}.detail-grid strong{margin-top:5px;font-size:9px}.detail-grid .not-included{color:var(--danger)}.author-profile{display:grid;grid-template-columns:67px 1fr;align-items:center;gap:16px}.author-profile>div{width:67px;height:67px;display:grid;place-items:center;color:#fff;background:var(--navy);border-radius:50%;font:800 17px Manrope}.author-profile p{margin:0;color:var(--muted);font-size:8px;line-height:1.7}.reviews .section-head button{padding:8px 11px;color:var(--navy);background:#fff;border:1px solid var(--navy);border-radius:5px;font-size:8px;font-weight:700}.review-summary{display:grid;grid-template-columns:120px 1fr;align-items:center;gap:24px;padding:18px;background:var(--cream);border-radius:8px}.review-summary>div:first-child{text-align:center}.review-summary strong,.review-summary>div:first-child span,.review-summary>div:first-child small{display:block}.review-summary strong{color:var(--navy);font-size:31px}.review-summary>div:first-child span{color:var(--gold);font-size:10px}.review-summary>div:first-child small{color:var(--muted);font-size:7px}.review-summary p{display:flex;align-items:center;gap:9px;margin:6px 0}.review-summary p>span{height:6px;flex:1;background:#e1e4e8;border-radius:99px}.review-summary i{display:block;height:100%;background:var(--gold)}.review-summary p small{width:63px;color:var(--muted);font-size:7px}.review-list article{padding:17px 0;border-bottom:1px solid var(--line)}.review-list article>div{display:flex;align-items:center;gap:9px}.review-list article>div>span{width:32px;height:32px;display:grid;place-items:center;color:#fff;background:var(--navy);border-radius:50%;font-size:8px}.review-list p strong,.review-list p small{display:block}.review-list p{margin:0}.review-list p strong{font-size:9px}.review-list p small{margin-top:3px;color:var(--gold);font-size:7px}.review-list blockquote{margin:10px 0 0;color:var(--muted);font-size:8px;line-height:1.7}
.purchase-column{position:relative}.purchase-card{position:sticky;top:96px;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.preview-box{position:relative;height:190px;display:grid;place-items:center;background:#e9edf2}.mini-book{width:105px;height:145px;display:flex;flex-direction:column;padding:18px 12px;color:#fff;background:linear-gradient(145deg,#0b3f70,#06172d);border-radius:3px;box-shadow:8px 10px 17px rgba(0,0,0,.22);transform:rotate(-4deg)}.mini-book small{font-size:5px}.mini-book strong{margin:auto 0;font:800 13px/1.1 Manrope;text-transform:uppercase}.preview-box button{position:absolute;right:11px;bottom:11px;padding:8px 10px;color:var(--navy);background:#fff;border:0;border-radius:5px;box-shadow:var(--shadow);font-size:7px;font-weight:750}.purchase-body{padding:20px}.price{display:flex;align-items:center;gap:9px}.price strong{color:var(--navy);font-size:25px}.price del{color:var(--muted);font-size:10px}.price span{padding:4px 6px;color:#fff;background:var(--green);border-radius:4px;font-size:7px}.delivery-note{margin:7px 0 15px;color:var(--green);font-size:7px}.add-cart,.buy-now{width:100%;height:44px;border-radius:6px;font-size:10px;font-weight:800}.add-cart{color:#fff;background:var(--navy);border:1px solid var(--navy)}.buy-now{margin-top:8px;color:var(--navy);background:#fff;border:1px solid var(--navy)}.secure{display:block;margin:9px 0 18px;color:var(--muted);font-size:6px;text-align:center}.purchase-body h3{font-size:10px}.purchase-body ul{display:grid;gap:10px;margin:12px 0 17px;padding:0;list-style:none}.purchase-body li{display:flex;gap:9px;color:#505a6a;font-size:8px}.purchase-body li span{color:var(--green)}.warning{padding:11px;color:#7e4932;background:#fff3e7;border:1px solid #ecd4b7;border-radius:7px}.warning strong{font-size:8px}.warning p{margin:4px 0 0;font-size:7px;line-height:1.5}.purchase-links{display:flex;justify-content:space-around;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.purchase-links button{color:var(--navy);background:transparent;border:0;font-size:7px;text-decoration:underline}.mobile-purchase{display:none}
.related{padding:70px 0}.related-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:23px}.related-head h2{margin:0;color:var(--navy);font:800 27px Manrope}.related-head a{color:var(--gold);font-size:9px;font-weight:800}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.related-grid article{display:grid;grid-template-columns:115px 1fr;overflow:hidden;border:1px solid var(--line);border-radius:9px}.related-cover{min-height:155px;display:flex;flex-direction:column;padding:18px 12px;color:#fff}.related-cover small{font-size:5px}.related-cover strong{margin:auto 0;font:800 13px/1.1 Manrope;text-transform:uppercase}.green{background:linear-gradient(145deg,#0b684d,#06372a)}.purple{background:linear-gradient(145deg,#4b2479,#1a174f)}.cream{color:var(--navy);background:linear-gradient(145deg,#f5eee2,#cbd7e5)}.related-grid article>div:last-child{padding:14px}.related-grid article>div:last-child>span{color:var(--gold);font-size:7px;font-weight:800}.related-grid h3{margin:7px 0;color:var(--ink);font-size:10px;line-height:1.4}.related-grid p{margin:0;color:var(--gold);font-size:7px}.related-grid article>div:last-child>strong{display:block;margin-top:8px;color:var(--navy);font-size:13px}.site-footer{padding:50px 0 18px;color:rgba(255,255,255,.65);background:#061528}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px}.footer-brand img{width:92px}.site-footer h3{margin:0 0 13px;color:#fff;font-size:11px}.site-footer p,.site-footer a{display:block;margin:0 0 8px;font-size:8px;line-height:1.6}.footer-bottom{margin-top:35px;padding-top:17px;border-top:1px solid rgba(255,255,255,.1);font-size:8px}
.preview-modal{position:fixed;z-index:200;inset:0;display:none;align-items:center;justify-content:center;padding:20px}.preview-modal.open{display:flex}.modal-backdrop{position:absolute;inset:0;background:rgba(3,12,23,.82)}.modal-dialog{position:relative;z-index:1;width:min(700px,100%);padding:25px;background:#fff;border-radius:12px}.modal-close{position:absolute;top:12px;right:12px;width:33px;height:33px;color:#fff;background:var(--navy);border:0;border-radius:50%;font-size:19px}.modal-dialog>span{color:var(--gold);font-size:8px;font-weight:800;text-transform:uppercase}.modal-dialog h2{margin:7px 0 18px;color:var(--navy);font:800 25px Manrope}.sample-pages{display:grid;grid-template-columns:1fr 1fr;gap:14px}.sample-pages article{min-height:240px;padding:25px;background:#faf7f1;border:1px solid #e8dece}.sample-pages small{color:var(--gold);font-size:7px}.sample-pages h3{margin:35px 0 12px;color:var(--navy);font:800 19px Manrope}.sample-pages p{color:var(--muted);font-size:8px;line-height:1.8}.preview-note{margin:15px 0 0;color:var(--muted);font-size:8px;text-align:center}
@media(max-width:980px){.main-nav{gap:15px}.details-layout{grid-template-columns:1fr}.purchase-column{display:none}.mobile-purchase{display:block}.mobile-purchase .purchase-card{display:block}.hero-grid{grid-template-columns:250px 1fr}.detail-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.nav-wrap{height:70px}.brand img{width:66px;height:66px}.menu-toggle{display:block;order:3}.main-nav{display:none;position:absolute;top:70px;left:15px;right:15px;flex-direction:column;gap:0;padding:11px;background:#fff;border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow)}.main-nav.open{display:flex}.main-nav a{padding:12px}.main-nav a.active:after{display:none}.nav-actions{margin-left:auto}.nav-actions .btn-outline{display:none}.hero-grid{grid-template-columns:1fr}.hero-book{height:300px}.book-cover{width:190px;height:270px}.book-cover h1{font-size:24px}.highlights-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr 1fr}.sample-pages{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.container{width:min(100% - 26px,1180px)}.nav-actions .btn{display:none}.detail-hero{padding-bottom:42px}.hero-copy h2{font-size:38px}.details-section{padding-top:25px}.content-card{padding:20px}.detail-grid{grid-template-columns:1fr}.review-summary{grid-template-columns:1fr}.related-grid,.footer-grid{grid-template-columns:1fr}.related-grid article{grid-template-columns:105px 1fr}}