:root{--bg:#f6f7fb;--ink:#172033;--muted:#657085;--brand:#3157ff;--brand2:#10b981;--card:#ffffff;--line:#e7eaf2}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}a{color:inherit;text-decoration:none}.top{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);z-index:5}.nav{max-width:1180px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:16px 22px}.logo{font-weight:900;font-size:24px}.logo span{color:var(--brand)}.links a{margin-left:20px;color:var(--muted);font-weight:700}.btn{display:inline-block;background:var(--brand);color:white;padding:12px 18px;border-radius:14px;font-weight:800;box-shadow:0 10px 25px rgba(49,87,255,.22)}.btn.alt{background:#172033}.hero{max-width:1180px;margin:0 auto;padding:82px 22px 54px;display:grid;grid-template-columns:1.1fr .9fr;gap:38px;align-items:center}.kicker{color:var(--brand);font-weight:900;text-transform:uppercase;letter-spacing:.12em}.hero h1{font-size:58px;line-height:1.02;margin:12px 0}.hero p{font-size:19px;color:var(--muted)}.hero-card{background:linear-gradient(135deg,#fff,#eef3ff);border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:0 25px 70px rgba(30,40,80,.12)}.book-stack{display:grid;gap:14px}.mini-book{background:white;border:1px solid var(--line);padding:16px;border-radius:18px;box-shadow:0 12px 25px rgba(0,0,0,.05)}.section{max-width:1180px;margin:auto;padding:46px 22px}.section h2{font-size:38px;margin:0 0 12px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 14px 35px rgba(20,30,60,.06)}.book-cover{height:180px;border-radius:18px;background:linear-gradient(145deg,#3157ff,#10b981);color:white;display:flex;align-items:end;padding:18px;font-size:22px;font-weight:900;margin-bottom:16px}.tag{display:inline-block;background:#eef3ff;color:#3157ff;font-weight:800;padding:6px 10px;border-radius:999px;font-size:13px}.price{font-size:22px;font-weight:900}.filters{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.filter{border:1px solid var(--line);background:white;padding:10px 14px;border-radius:999px;color:var(--muted);font-weight:800}.cta{background:linear-gradient(135deg,#172033,#3157ff);color:white;border-radius:30px;padding:42px}.cta p{color:#dfe6ff}.footer{margin-top:40px;background:#101625;color:#d7deef;padding:36px 22px}.footer .inner{max-width:1180px;margin:auto;display:flex;justify-content:space-between;gap:20px}.article{max-width:860px;margin:40px auto;background:white;border:1px solid var(--line);border-radius:24px;padding:34px}.article h1{font-size:44px;line-height:1.1}@media(max-width:850px){.hero{grid-template-columns:1fr;padding-top:48px}.hero h1{font-size:42px}.grid{grid-template-columns:1fr}.links{display:none}.footer .inner{display:block}}