:root{--ink:#111;--muted:#626262;--line:#e5e1da;--paper:#fbfaf7;--card:#f5f1ea;--accent:#f1c54b}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--paper);color:var(--ink);line-height:1.58}
a{color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
header{border-bottom:1px solid var(--line);background:#fff}
.top{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-weight:900;letter-spacing:.09em;font-size:24px;text-decoration:none}
.nav{display:flex;gap:28px;font-size:15px}
.nav a{text-decoration:none}
.nav a:hover{text-decoration:underline;text-underline-offset:5px}
.breadcrumb{font-size:13px;color:var(--muted);padding:24px 0 8px}
.grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,.75fr);gap:42px;align-items:start;padding-bottom:48px}
.eyebrow{font-size:13px;font-weight:800;letter-spacing:.18em;margin-top:8px}
.h1{font-size:46px;line-height:1.04;margin:10px 0 12px;letter-spacing:-.035em;max-width:900px}
.dek{font-size:20px;color:#555;max-width:760px;margin:0 0 26px}
.hero{
  width:min(100%, 560px);
  height:auto;
  aspect-ratio:auto;
  object-fit:contain;
  object-position:center;
  display:block;
  margin:0 auto;
  border:2px solid #2a2926;
  background:#fff;
  box-shadow:
    0 0 0 12px #f3f0e9,
    0 8px 24px rgba(0,0,0,.08);
}
.article{font-size:17px;margin-top:38px;max-width:800px}
.article p{margin:0 0 15px}
.side{position:sticky;top:22px}
.bookcard{background:var(--card);padding:18px;border-radius:10px}
.cover{width:100%;height:auto;display:block;background:#ddd}
.bookcard h2{font-size:25px;margin:18px 0 3px}
.sub{font-size:16px}
.small{color:var(--muted);font-size:15px}
.cta{display:block;text-align:center;background:var(--accent);padding:16px 18px;border-radius:9px;font-weight:800;text-decoration:none;margin-top:18px}
.benefits{border:1px solid var(--line);border-radius:10px;padding:18px;margin-top:16px;background:#fff;font-size:15px}
.related{border-top:1px solid var(--line);padding:28px 0 58px}
.related h2{font-size:22px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{text-decoration:none;font-weight:700}
.thumb{aspect-ratio:4/3;background:#eee;border:1px solid #ccc;overflow:hidden;margin-bottom:8px}
.thumb img{width:100%;height:100%;object-fit:cover}
.about-hero{padding:86px 0 58px;border-bottom:1px solid var(--line)}
.about-hero .h1{font-size:64px;max-width:950px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding:64px 0}
.about-grid h2{font-size:30px;margin-top:0;letter-spacing:-.02em}
.about-grid p{font-size:18px;margin-top:0}
.callout{background:#111;color:white;padding:44px;border-radius:12px;margin:0 0 70px}
.callout h2{font-size:34px;margin:0 0 12px}
.callout p{font-size:18px;max-width:760px}
.callout a{display:inline-block;background:#fff;color:#111;text-decoration:none;font-weight:800;padding:14px 18px;border-radius:8px;margin-top:10px}
footer{border-top:1px solid var(--line);padding:34px 0 44px;background:#fff}
.foot{display:flex;justify-content:space-between;gap:24px;align-items:flex-end}
.footlinks{display:flex;gap:18px;margin-top:10px;font-size:14px}
.tag{font-size:12px;letter-spacing:.12em;color:#555}
@media(max-width:850px){
 .grid,.about-grid{grid-template-columns:1fr}
 .side{position:static}.h1,.about-hero .h1{font-size:36px}
 .cards{grid-template-columns:repeat(2,1fr)}
 .nav{gap:18px;font-size:14px}
}