:root{
  --navy:#122848; --blue:#294C85; --pale:#E8F1F8; --bg:#F7FAFC;
  --gold:#B49A5B; --burgundy:#7E1724; --slate:#535559; --line:#ADC1D0;
  --white:#fff; --shadow:0 2px 10px rgba(18,40,72,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--navy);
  font:16px/1.65 Georgia,'Times New Roman',serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue)}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:var(--white);padding:10px 14px;z-index:99;border:2px solid var(--gold)}

/* header */
.site-head{background:var(--navy);border-bottom:4px solid var(--gold);position:sticky;top:0;z-index:50}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{color:var(--gold);font-size:26px;line-height:1}
.brand-text{display:flex;flex-direction:column}
.brand-name{color:var(--white);font-size:19px;font-weight:700;letter-spacing:.5px}
.brand-sub{color:var(--line);font-size:11px;letter-spacing:1.6px;text-transform:uppercase}
.site-head nav{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.site-head nav a{color:var(--pale);text-decoration:none;font-size:14px;letter-spacing:.4px}
.site-head nav a:hover{color:var(--gold)}

/* buttons */
.btn{display:inline-block;text-decoration:none;font-size:14px;letter-spacing:.5px;
  padding:11px 20px;border-radius:3px;border:2px solid transparent;transition:.15s;cursor:pointer}
.btn-primary{background:var(--gold);color:var(--navy);font-weight:700}
.btn-primary:hover{background:#C6AC70}
.btn-ghost{border-color:var(--pale);color:var(--pale)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn-head{background:var(--gold);color:var(--navy);font-weight:700;padding:9px 16px}
.btn-head:hover{background:#C6AC70;color:var(--navy)}
.btn-buy{background:var(--navy);color:var(--white);width:100%;text-align:center;font-weight:700}
.btn-buy:hover{background:var(--blue)}
.btn-book{background:var(--white);color:var(--navy);border-color:var(--navy);font-weight:700}
.btn-book:hover{background:var(--navy);color:var(--white)}

/* hero */
.hero{background:linear-gradient(160deg,var(--navy),var(--blue));color:var(--white);
  padding:76px 0 68px;text-align:center}
.eyebrow{color:var(--gold);font-size:12px;letter-spacing:3px;text-transform:uppercase;margin:0 0 14px}
.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.15;margin:0 0 18px;font-weight:700}
.hero-lede{max-width:620px;margin:0 auto 30px;color:var(--pale);font-size:17px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* announcement band */
.band{background:var(--burgundy);color:#fff}
.band-inner{padding:15px 20px;text-align:center;font-size:15px}
.band strong{color:#F3D9A0}

/* sections */
.section{padding:64px 0}
.section-alt{background:var(--pale)}
.section h2{font-size:clamp(24px,3.4vw,34px);margin:0 0 14px}
.rule{width:64px;height:3px;background:var(--gold);margin-bottom:20px}
.section-lede{max-width:660px;color:var(--slate);margin:0 0 34px}

/* product grid */
.grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--white);border:1px solid var(--line);border-radius:5px;
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.card-img{position:relative;background:var(--pale);aspect-ratio:1/1;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;top:10px;left:10px;font-size:10px;letter-spacing:1.4px;
  text-transform:uppercase;padding:5px 10px;border-radius:2px;font-weight:700}
.badge-gold{background:var(--gold);color:var(--navy)}
.badge-burgundy{background:var(--burgundy);color:#fff}
.card-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-title{font-size:17px;margin:0;line-height:1.3}
.card-sub{font-size:12.5px;color:var(--slate);margin:0;flex:1;line-height:1.5}
.card-foot{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.price{font-size:20px;color:var(--burgundy);font-weight:700}

/* guarantee */
.guarantee{background:var(--navy);color:var(--white);padding:52px 0;border-top:4px solid var(--gold);border-bottom:4px solid var(--gold)}
.guarantee-inner{display:flex;align-items:center;gap:26px;justify-content:center;flex-wrap:wrap;text-align:left}
.guarantee-mark{color:var(--gold);font-size:52px;line-height:1}
.guarantee h2{color:var(--gold);font-size:20px;letter-spacing:2.4px;text-transform:uppercase;margin:0 0 10px}
.guarantee-line{font-size:clamp(21px,3vw,29px);margin:0 0 8px}
.guarantee-sub{color:var(--line);margin:0;font-size:14.5px}

/* books */
.books{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.book{background:var(--white);border:1px solid var(--line);border-left:4px solid var(--gold);
  border-radius:4px;padding:20px;display:flex;flex-direction:column;gap:10px}
.book-title{margin:0;font-size:18px}
.book-note{margin:0;color:var(--slate);font-size:14px;flex:1}

/* footer */
.site-foot{background:var(--navy);color:var(--line);padding:48px 0;text-align:center}
.foot-brand{color:var(--white);font-size:17px;margin:0 0 18px}
.foot-disclosure{max-width:680px;margin:26px auto 0;font-size:12.5px;line-height:1.7;color:#9FB4C6}
.foot-meta{font-size:12px;margin-top:16px;color:#7C93A8}

@media (max-width:640px){
  .hero{padding:52px 0 46px}
  .section{padding:46px 0}
  .guarantee-inner{text-align:center;flex-direction:column;gap:14px}
  .head-inner{justify-content:center}
}
.site-head nav a.on{color:var(--gold);border-bottom:2px solid var(--gold);padding-bottom:2px}
.group{font-size:20px;margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--gold)}
.group:first-of-type{margin-top:6px}
.section-lede a{color:var(--blue);font-weight:700}