*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0e1116;--panel:#161b22;--fg:#e6edf3;--muted:#9da7b3;--accent:#ff90e8;--accent2:#6ee7b7;--border:#26303b}
body{background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--border);padding:18px 0;position:sticky;top:0;background:rgba(14,17,22,.92);backdrop-filter:blur(8px);z-index:5}
header.site .wrap{display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:800;letter-spacing:.4px}.brand span{color:var(--accent)}
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:2.4rem;line-height:1.2;margin-bottom:14px}
.hero p{color:var(--muted);max-width:680px;margin:0 auto 22px}
.btn{display:inline-block;background:var(--accent);color:#111;font-weight:700;padding:13px 26px;border-radius:8px}
.btn:hover{filter:brightness(1.08);text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:24px 0 64px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:10px}
.card .cat{font-size:.72rem;text-transform:uppercase;letter-spacing:1.2px;color:var(--accent2)}
.card h3{font-size:1.12rem;line-height:1.3}
.card .sub{color:var(--muted);font-size:.9rem}
.card .buy{margin-top:auto;font-weight:700}
article.book{max-width:760px;margin:0 auto;padding:48px 20px 80px}
article.book h1{font-size:2rem;line-height:1.25;margin-bottom:10px}
article.book .sub{color:var(--muted);font-size:1.1rem;margin-bottom:8px}
article.book .meta{font-size:.9rem;color:var(--muted);margin-bottom:26px}
article.book h2{margin:34px 0 12px;font-size:1.25rem}
article.book p{margin-bottom:14px}
.preview{background:var(--panel);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:10px;padding:20px;color:#cdd6e0}
.buybox{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px;margin:28px 0;text-align:center}
.buybox .price{font-size:1.5rem;font-weight:800;margin-bottom:12px}
footer.site{border-top:1px solid var(--border);padding:28px 0;color:var(--muted);font-size:.85rem;text-align:center}
ul.tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0}
ul.tags li{background:#1f2730;border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-size:.78rem;color:var(--muted)}