:root{
  --bg:#08090c; --panel:#11141b; --panel2:#171b24; --text:#f4f6fb; --muted:#aeb7c7;
  --line:#2b3242; --accent:#d8b36a; --accent2:#7fc7ff; --max:1120px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 20% 0%,#1d2638 0,#08090c 35%,#08090c 100%);color:var(--text);line-height:1.6}
a{color:inherit} p{color:var(--muted);font-size:18px} h1,h2,h3{letter-spacing:-.03em;line-height:1.08;margin:0 0 18px} h1{font-size:clamp(42px,7vw,86px)} h2{font-size:clamp(30px,4vw,52px)} h3{font-size:24px}
.container{max-width:var(--max);margin:auto;padding:0 24px}
.nav{position:sticky;top:0;z-index:10;background:rgba(8,9,12,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{font-weight:800;text-decoration:none;letter-spacing:-.04em}.nav-links{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.nav-links a{font-size:14px;color:var(--muted);text-decoration:none}.nav-links a:hover{color:var(--text)}
.hero{padding:92px 0 54px}.eyebrow{color:var(--accent);font-weight:700;text-transform:uppercase;font-size:13px;letter-spacing:.12em;margin-bottom:16px}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}.hero p{font-size:22px;max-width:760px}
.card{background:linear-gradient(180deg,var(--panel),rgba(17,20,27,.72));border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:0 24px 90px rgba(0,0,0,.25)}
.book-card{min-height:420px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(135deg,#172033,#0f1218 70%)}.book-title{font-size:34px;font-weight:900;line-height:1.05}.book-sub{color:var(--accent);font-weight:700}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);padding:13px 18px;border-radius:999px;text-decoration:none;font-weight:700;background:#151a23;color:var(--text)}.btn.primary{background:var(--accent);color:#111;border-color:var(--accent)}.btn:hover{transform:translateY(-1px)}
.section{padding:70px 0;border-top:1px solid rgba(255,255,255,.06)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.kicker{color:var(--accent2);font-weight:700}.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:7px 11px;color:var(--muted);font-size:13px;margin:4px 4px 0 0}
.price{font-size:48px;color:var(--text);font-weight:900;letter-spacing:-.05em}.small{font-size:14px;color:var(--muted)}
.faq details{border:1px solid var(--line);border-radius:18px;padding:18px 20px;background:rgba(17,20,27,.72);margin-bottom:12px}.faq summary{cursor:pointer;font-weight:800}.faq p{margin-bottom:0}
.footer{padding:50px 0;color:var(--muted);border-top:1px solid var(--line)}
.article{max-width:850px;margin:auto;padding:70px 24px}.article h1{font-size:clamp(38px,6vw,68px)}.article h2{margin-top:44px}.article li{color:var(--muted);font-size:18px;margin:9px 0}
.notice{border-left:4px solid var(--accent);padding:16px 20px;background:rgba(216,179,106,.08);border-radius:12px;color:var(--muted)}
@media(max-width:850px){.hero-grid,.grid-3,.grid-2{grid-template-columns:1fr}.nav-inner{height:auto;padding:14px 0;align-items:flex-start}.nav-links{justify-content:flex-start}}