:root{--navy:#0d1b3e;--ink:#17385c;--signal:#c0392b;--leaf:#1f6b48;--leaf-soft:#e5f5ec;--gold:#c4922a;--muted:#5c6572;--line:#e4e7eb;--soft:#f4f6f8;--cream:#fff9ec;--paper:#fff;--canvas:#f7f5f1;--display:Palatino,"Palatino Linotype",Georgia,serif;--sans:"Segoe UI","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--navy);font:17px/1.55 var(--sans)}img{max-width:100%;height:auto}a{color:inherit}button,summary,a{cursor:pointer}h1,h2,h3{font-family:var(--display);line-height:1.15;margin:0;font-weight:560}p{margin:0}:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:.5rem;background:#fff;padding:.4rem .6rem;z-index:50}
.wrap{width:min(72rem,calc(100% - 2rem));margin-inline:auto}
.ann{background:var(--navy);color:var(--cream);text-align:center;font-size:.75rem;font-weight:700;letter-spacing:.08em;padding:.55rem 1rem}
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.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4rem}
.brand{text-decoration:none}.brand strong{display:block;font-family:var(--display);font-size:1.2rem}.brand small{color:var(--muted);font-size:.75rem}
.nav{display:none;gap:1.2rem}.nav a{text-decoration:none}
.cta{display:none;min-height:2.75rem;align-items:center;padding:0 1rem;border-radius:.4rem;background:var(--signal);color:var(--cream);font-weight:700;text-decoration:none}
.menu{min-height:2.75rem;border:0;background:transparent;font-weight:700}
.mobilenav{display:none;border-top:1px solid var(--line);padding:.5rem 1rem}.mobilenav a{display:block;padding:.7rem 0;text-decoration:none}.mobilenav.open{display:block}
.hero{display:grid;gap:2rem;padding:2rem 0}
.shot{border:0;padding:0;background:#063a40;border-radius:.75rem;overflow:hidden;width:100%;position:relative}
.shot img{width:100%;aspect-ratio:1;object-fit:cover}
.thumbs{display:flex;gap:.4rem;margin-top:.6rem}.thumbs button{width:4rem;padding:.1rem;border:2px solid transparent;border-radius:.4rem;background:#fff}.thumbs button[aria-current="true"]{border-color:var(--gold)}.thumbs img{width:100%;aspect-ratio:1;object-fit:cover}
.kicker{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.eye{color:var(--leaf);font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.muted{color:var(--muted)}
.card{background:#fff;border:1px solid var(--line);border-radius:.85rem;padding:1.1rem}
.dark{background:var(--navy);color:var(--cream);border:0}
.price{font-family:var(--display);font-size:2.1rem;color:var(--signal)}
.dark .price{color:var(--gold)}
.row{display:flex;gap:.7rem;align-items:center;margin-top:.7rem}.row img{width:4rem;height:4rem;object-fit:cover;border-radius:.4rem}
.btn{display:flex;align-items:center;justify-content:center;min-height:3rem;border-radius:.4rem;font-weight:700;text-decoration:none}
.btn.line{border:1px solid var(--navy);margin-top:1rem}.btn.fill{background:var(--signal);color:var(--cream);margin-top:1rem}
.specs{display:grid;grid-template-columns:1fr 1fr;background:#fff;border-block:1px solid var(--line)}.spec{text-align:center;padding:1rem}.spec strong{display:block;font-family:var(--display)}
section{padding:3.5rem 0}.center{text-align:center;max-width:46rem;margin:0 auto 1.5rem}.center h2{font-size:clamp(1.7rem,3vw,2.3rem)}
.grid2,.grid3,.topics,.stats{display:grid;gap:1rem}
.topic,.book{background:#fff;border:1px solid var(--line);border-radius:.85rem;padding:1rem}
.book{display:grid;gap:1rem;margin-bottom:1rem}.book ul{margin:.4rem 0 0;padding-left:1.1rem}
.sum{background:var(--navy);color:var(--cream);border-radius:1rem;padding:1.2rem}.sum div{display:flex;justify-content:space-between;gap:.6rem;margin:.3rem 0}
table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:.7rem;border-bottom:1px solid var(--line);vertical-align:top}
details{background:#fff;border:1px solid var(--line);border-radius:.7rem;padding:.2rem 1rem;margin:.4rem 0}summary{font-weight:700;padding:.7rem 0}
.strike{text-decoration:line-through;opacity:.7;font-weight:400}
footer{background:var(--navy);color:var(--cream);padding:2rem 0 6rem}.flinks{display:flex;flex-wrap:wrap;gap:.4rem 1rem}.flinks a{color:var(--cream)}
.buybar{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:.7rem;z-index:20}
.buybar a{display:flex}
@media(min-width:700px){.nav,.cta{display:flex}.menu,.mobilenav,.buybar{display:none}footer{padding-bottom:2rem}.specs{grid-template-columns:repeat(4,1fr)}}
@media(min-width:960px){.hero,.grid2,.book{grid-template-columns:1.05fr .95fr}.grid3,.stats{grid-template-columns:repeat(3,1fr)}.topics{grid-template-columns:repeat(3,1fr)}}
@media(max-width:699px){table,tbody,tr,td{display:block;width:100%}thead{display:none}tr{background:#fff;border:1px solid var(--line);border-radius:.7rem;margin-bottom:.6rem}td::before{content:attr(data-label);display:block;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

h1,h2,h3{overflow-wrap:break-word;hyphens:manual}