:root{
  --text:#111827;
  --muted:#6b7280;
  --brand:#2563eb;
  --paper:#ffffff;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
     color:var(--text); line-height:1.6; background:#f7fafc;}

.container{max-width:1100px;margin:0 auto;padding:0 20px}

.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.9);backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid #e5e7eb;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.logo-img{display:block;height:44px;width:auto;border-radius:6px;box-shadow:0 1px 0 rgba(0,0,0,.03)}
.brand h1{font-size:20px;margin:0}
nav a{margin-left:18px;text-decoration:none;color:#111827;font-weight:600}
nav a:hover{text-decoration:underline}

.hero{background:linear-gradient(180deg,#dbeafe 0%, #eff6ff 60%, #ffffff 100%);position:relative;}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;padding:48px 0 28px;}
.hero-copy h2{font-size:42px;line-height:1.15;margin:0 0 10px}
.hero-copy p{font-size:18px;color:#374151;margin:0 0 18px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 18px;border-radius:10px;font-weight:700;text-decoration:none;border:1px solid #e5e7eb}
.btn.primary{background:var(--brand);color:#fff;border-color:transparent}
.btn.ghost{background:#fff;color:#111827}
.btn:focus{outline:3px solid #93c5fd;outline-offset:2px}
.hero-art img{width:100%;height:auto;border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.1)}
.hero-wave{height:24px;background:linear-gradient(90deg,#93c5fd,#a7f3d0,#fef3c7);opacity:.7}

section{padding:48px 0}
h3{font-size:30px;margin:0 0 6px}
.subtitle{color:#6b7280;margin-top:0}

.book .book-grid{display:grid;grid-template-columns:0.8fr 1.2fr;gap:26px;align-items:center}
.book-cover img{width:100%;border-radius:12px;box-shadow:0 10px 20px rgba(0,0,0,.15)}
.specs{padding-left:18px;color:#374151}
.buy-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}

.gallery .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:20px}
.gallery .card{background:#ffffff;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden}
.gallery .card img{width:100%;display:block}
.gallery figcaption{padding:8px 12px;color:#6b7280;font-size:14px}

.about .about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}
.about-art img{width:100%;border-radius:12px;border:1px solid #e5e7eb}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.badge{background:#eef2ff;border:1px solid #e5e7eb;border-radius:999px;padding:6px 10px;font-weight:700;font-size:12px}

.newsletter form{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.newsletter input{padding:12px 14px;border-radius:10px;border:1px solid #d1d5db;min-width:240px}
.tiny{font-size:12px;color:#6b7280}

.contact .contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:start}
.contact-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:12px;padding:16px}

.site-footer{padding:26px 0;background:#111827;color:#e5e7eb;text-align:center}

@media (max-width: 900px){
  .hero-inner{grid-template-columns:1fr}
  .book .book-grid{grid-template-columns:1fr}
  .about .about-grid{grid-template-columns:1fr}
  .contact .contact-grid{grid-template-columns:1fr}
}