:root{
  --bg:#0b1a2b; --bg2:#10253b; --card:#142c45; --ink:#eef3f8; --muted:#a9bacb;
  --gold:#e8c27a; --teal:#4cc3b5; --line:rgba(255,255,255,.10);
  --radius:16px; --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 "Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Fraunces",Georgia,serif;font-weight:600;line-height:1.15;margin:0 0 .5em}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(11,26,43,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-family:"Fraunces",Georgia,serif;font-weight:600;font-size:1.1rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand span{color:var(--gold)}
.nav a{color:var(--muted);margin-left:26px;font-size:.95rem}
.nav a:hover{color:var(--ink);text-decoration:none}

/* hero */
.hero{position:relative;min-height:min(78vh,640px);display:flex;align-items:center;background:#0a1a2c url("img/hero.jpg") right center/auto 100% no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#0a1a2c 0%,#0a1a2c 28%,rgba(10,26,44,.78) 48%,rgba(10,26,44,0) 72%)}
.hero .wrap{position:relative;width:100%;padding-top:72px;padding-bottom:72px}
.eyebrow{color:var(--gold);letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;font-weight:600;margin-bottom:18px}
.hero h1{font-size:clamp(2.2rem,5vw,3.6rem);max-width:15ch}
.hero p.lead{font-size:1.2rem;color:var(--muted);max-width:34em;margin:0 0 30px}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:600;font-size:.98rem;margin-right:12px}
.btn.primary{background:var(--gold);color:#1a1a1a}
.btn.ghost{border:1px solid var(--line);color:var(--ink)}
.btn:hover{text-decoration:none;filter:brightness(1.08)}

/* sections */
section{padding:84px 0}
section.alt{background:var(--bg2)}
.section-head{max-width:640px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.8rem,3.4vw,2.4rem)}
.section-head p{color:var(--muted);margin:0}

/* books */
.group-title{font-family:"Inter",system-ui,sans-serif;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin:0 0 20px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.books + .group-title{margin-top:56px}
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:28px}
.book{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.book .cover{aspect-ratio:3/4;background:#0e2036;display:flex;align-items:center;justify-content:center;padding:18px}
.book .cover img{max-width:100%;max-height:100%;border-radius:6px;box-shadow:0 14px 30px rgba(0,0,0,.45)}
.book .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:6px;flex:1}
.book h3{font-size:1.15rem;margin:0}
.book .sub{color:var(--muted);font-size:.92rem;margin:0}
.badge{align-self:flex-start;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:rgba(76,195,181,.16);color:var(--teal);border-radius:999px;padding:3px 10px;margin-bottom:6px}
.book .links{margin-top:auto;padding-top:12px;font-size:.92rem}
.book .links a{margin-right:14px}
.note{color:var(--muted);font-size:.9rem;margin-top:30px}

/* apps */
.apps{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px}
.app{display:flex;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.app img{width:84px;height:84px;border-radius:19px;flex:none;box-shadow:0 8px 20px rgba(0,0,0,.4)}
.app h3{font-size:1.25rem;margin-bottom:.2em}
.app p{color:var(--muted);margin:0 0 12px;font-size:.98rem}
.app .links a{margin-right:16px;font-size:.95rem;font-weight:600}

/* about + contact */
.cols{display:grid;grid-template-columns:1.3fr 1fr;gap:48px}
.cols p{color:var(--muted)}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.contact-card h3{font-size:1.1rem}
.contact-card p{margin:.3em 0;color:var(--muted)}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
footer small{display:block;max-width:60ch}

@media (max-width:760px){
  .nav a{margin-left:16px}
  .hero{background-position:72% center;background-size:cover}
  .hero::before{background:linear-gradient(180deg,rgba(10,26,44,.6),rgba(10,26,44,.93))}
  .cols{grid-template-columns:1fr;gap:28px}
  section{padding:60px 0}
}
@media (prefers-reduced-motion:no-preference){.book,.app{transition:transform .2s}.book:hover,.app:hover{transform:translateY(-3px)}}