:root{--ink:#1d2430;--muted:#5d6675;--paper:#fbfaf7;--line:#e4e1da;--accent:#1f4e79;--accent-ink:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--paper)}
a{color:var(--accent)}img{max-width:100%;height:auto;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;display:inline-flex;align-items:center;gap:10px}.brand img{height:32px;width:auto}
nav{display:flex;gap:18px;flex-wrap:wrap}nav a{color:var(--ink);text-decoration:none;font-size:.95rem}nav a:hover{color:var(--accent)}
.hero{background-size:cover;background-position:center;color:#fff;padding:110px 0 120px;position:relative}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,20,35,.6),rgba(10,20,35,.1))}
.hero .wrap{position:relative}.hero h1{font-size:clamp(2.2rem,5vw,3.4rem);margin:0 0 .3em;line-height:1.1}
.hero p{margin:.2em 0;font-size:1.05rem}.flag{font-weight:600}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:12px 22px;border-radius:6px;text-decoration:none;font-weight:600;margin:18px 10px 0 0}
.btn.light{background:#fff;color:var(--ink)}.btn.ghost{background:transparent;border:1.5px solid #fff;color:#fff}
.tools{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin:48px 0 12px}
.tools h2{margin:0}#count{color:var(--muted);font-weight:400;font-size:1rem}
#q{padding:10px 14px;border:1px solid var(--line);border-radius:6px;min-width:260px;font:inherit;background:#fff;width:100%;max-width:360px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font:inherit;font-size:.9rem;cursor:pointer;color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:28px 22px}
.card a{text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:4px}
.card img{aspect-ratio:3/4;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:4px;padding:8px;transition:transform .15s}
.card a:hover img{transform:translateY(-3px)}
.card .t{font-weight:600;line-height:1.3;margin-top:6px}.card .a{color:var(--muted);font-size:.9rem}.card .p{font-size:.95rem}
.sister{margin:56px 0;padding:24px;border:1px solid var(--line);border-radius:8px;background:#fff}.sister h3{margin-top:0}
.book{padding-top:24px;padding-bottom:48px}.crumbs{color:var(--muted);font-size:.9rem}
.book-grid{display:grid;grid-template-columns:minmax(0,420px) 1fr;gap:44px;align-items:start;margin-bottom:32px}
.cover{background:#fff;border:1px solid var(--line);border-radius:6px;padding:12px}
.book h1{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2;margin:0 0 .3em}
.by{font-size:1.1rem;margin:0}.ed{color:var(--muted);margin:.2em 0}.price{font-size:1.3rem;font-weight:600;margin:.8em 0 0}.price s{color:var(--muted);font-weight:400;font-size:1rem}
.desc{margin-top:24px}.meta{color:var(--muted);font-size:.92rem}
.foot{background:#1d2430;color:#d9dde4;padding:40px 0 20px;margin-top:40px}.foot a{color:#fff}
.foot .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}.small{font-size:.85rem;color:#9aa3b1;margin-top:24px}
[hidden]{display:none!important}
@media (max-width:760px){.book-grid{grid-template-columns:1fr}.hero{padding:70px 0 80px}.grid{grid-template-columns:repeat(2,1fr);gap:20px 14px}#q{max-width:none}}