:root{--navy:#0f1b2d;--gold:#f2c94c;--ink:#1d1d1f;--muted:#5b6573;--bg:#fbfaf7}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--navy)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header.hero{background:var(--navy);color:#fff;padding:48px 0 56px}
.hero .wrap{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:760px){.hero .wrap{grid-template-columns:1.3fr 1fr}}
.brand{letter-spacing:.3em;font-weight:700;color:var(--gold);font-size:.85rem}
h1{font-size:clamp(2rem,6vw,3.2rem);line-height:1.05;margin:.4em 0 .3em;letter-spacing:-.02em}
.sub{font-size:1.15rem;color:#dfe6ee;margin:0 0 1em}
.hero p.lead{color:#b8c4d2;max-width:34em}
.cover{width:100%;max-width:300px;justify-self:center;border-radius:6px;box-shadow:0 18px 40px rgba(0,0,0,.45)}
.buy{background:#fff;color:var(--ink);border-radius:12px;padding:20px;margin-top:20px;max-width:360px}
.price{font-size:2rem;font-weight:800}.price small{display:block;font-size:.9rem;font-weight:500;color:var(--muted)}
.btn{display:inline-block;width:100%;background:var(--gold);color:var(--navy);border:0;border-radius:8px;padding:14px 18px;font-size:1.05rem;font-weight:700;cursor:pointer}
.btn:hover{filter:brightness(.95)}
.fine{font-size:.82rem;color:var(--muted);margin:.6em 0 0}
section{padding:48px 0;border-bottom:1px solid #ebe7dc}
h2{font-size:1.6rem;margin:0 0 .6em;color:var(--navy)}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}}
.card{background:#fff;border:1px solid #ebe7dc;border-radius:10px;padding:18px}
.card h3{margin:0 0 .3em;font-size:1.05rem}.card p{margin:0;color:var(--muted)}
ol.chapters{padding-left:1.4em;columns:1}@media(min-width:640px){ol.chapters{columns:2;column-gap:40px}}
ol.chapters li{break-inside:avoid;margin:.25em 0}
.not{background:#fff;border-left:4px solid var(--gold);padding:14px 18px;border-radius:6px}
.disclaimer{font-size:.9rem;color:var(--muted)}
footer{padding:28px 0;font-size:.85rem;color:var(--muted)}
.page-hero{padding:40px 0 36px}
.prose{max-width:720px}
.prose h2{margin-top:1.6em}
.prose h3{margin:1.2em 0 .4em;font-size:1.1rem;color:var(--navy)}
.prose ul,.prose ol{padding-left:1.4em}
.prose li{margin:.35em 0}
footer .contact,.footer-links{margin:.4em 0 0}
footer .footer-links a{color:var(--muted);text-decoration:underline}
footer .footer-links a:hover{color:var(--navy)}