:root{
  --bg0:#040806;
  --bg1:#07110c;
  --panel:rgba(255,255,255,.06);
  --stroke:rgba(255,255,255,.12);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.72);
  --muted2:rgba(255,255,255,.56);
  --accent1:#14b8a6;
  --accent2:#60a5fa;
  --accent3:#f59e0b;
  --radius:18px;
  --shadow: 0 14px 46px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(20,184,166,.18), transparent 60%),
    radial-gradient(900px 450px at 50% 10%, rgba(96,165,250,.12), transparent 62%),
    radial-gradient(900px 450px at 50% 28%, rgba(245,158,11,.08), transparent 68%),
    linear-gradient(180deg, var(--bg1), var(--bg0));
}
a{color:inherit; text-decoration:none}
a:hover{opacity:.95}

.wrap{max-width:1120px; margin:0 auto; padding:24px}
header{
  position:sticky; top:0; z-index:10;
  backdrop-filter:saturate(140%) blur(10px);
  background: rgba(4,8,6,.68);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:14px 24px;
}
.brand{
  display:flex; align-items:center; gap:12px; min-width: 240px;
}
.brand img{height:36px; width:auto; filter: drop-shadow(0 10px 18px rgba(0,0,0,.5));}
.brand .t{display:flex; flex-direction:column; line-height:1.05}
.brand .t b{font-size:14px; letter-spacing:.06em}
.brand .t span{font-size:12px; color:var(--muted2)}
.links{display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end}
.links a{
  padding:8px 12px; border-radius:999px; border:1px solid transparent;
  color:var(--muted); font-size:13px;
}
.links a[aria-current="page"]{border-color:rgba(255,255,255,.12); background:rgba(255,255,255,.06); color:var(--text)}
.links a:hover{background:rgba(255,255,255,.06); color:var(--text)}

.card{
  background:var(--panel);
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.hero{padding:48px 24px; display:grid; gap:22px; align-items:center}
.heroGrid{display:grid; grid-template-columns: 1.2fr .8fr; gap:22px}
@media (max-width: 860px){ .heroGrid{grid-template-columns:1fr} }
.hKicker{color:var(--muted2); font-size:13px; letter-spacing:.16em; text-transform:uppercase}
.hTitle{font-size:44px; letter-spacing:-.02em; margin:8px 0 0}
@media (max-width: 520px){ .hTitle{font-size:34px} }
.hSub{color:var(--muted); margin:10px 0 0; max-width:58ch; line-height:1.55}
.ctaRow{display:flex; flex-wrap:wrap; gap:10px; margin-top:18px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  color:var(--text);
  font-weight:600; font-size:14px;
}
.btn.primary{
  background: linear-gradient(90deg, rgba(20,184,166,.22), rgba(96,165,250,.18));
  border-color: rgba(20,184,166,.28);
}
.btn.ghost{background:transparent}
.btn:hover{transform: translateY(-1px); transition: transform .12s ease}

.pillRow{display:flex; flex-wrap:wrap; gap:8px; margin-top:16px}
.pill{
  font-size:12px; color:var(--muted);
  padding:6px 10px; border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
}
.section{margin:28px 0}
.section h2{margin:0 0 10px; font-size:22px}
.section p{margin:0; color:var(--muted); line-height:1.55}

.grid3{display:grid; gap:14px; grid-template-columns:repeat(3,1fr)}
@media (max-width: 920px){ .grid3{grid-template-columns:1fr} }
.tile{padding:18px}
.tile h3{margin:0 0 6px; font-size:16px}
.tile p{margin:0; color:var(--muted2); line-height:1.5}

.booksGrid{display:grid; gap:16px; grid-template-columns:repeat(3,1fr)}
@media (max-width: 920px){ .booksGrid{grid-template-columns:1fr} }
.bookCard{padding:16px; display:grid; gap:12px}
.bookTop{display:grid; grid-template-columns: 160px 1fr; gap:14px; align-items:start}
@media (max-width: 520px){ .bookTop{grid-template-columns: 130px 1fr} }
.cover{
  width:160px; height:auto; border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  box-shadow: 0 16px 44px rgba(0,0,0,.52);
}
.bookMeta h3{margin:0 0 6px; font-size:18px}
.bookMeta p{margin:0; color:var(--muted2); line-height:1.55}
.badgeRow{display:flex; gap:8px; flex-wrap:wrap; margin-top:10px}
.badge{font-size:11px; color:var(--muted); padding:6px 10px; border-radius:999px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.10)}
.buyRow{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}

footer{
  margin-top:40px;
  padding:26px 0 40px;
  color: var(--muted2);
  border-top: 1px solid rgba(255,255,255,.08);
}
.small{font-size:12px; color:var(--muted2)}
.hr{height:1px; background:rgba(255,255,255,.08); margin:18px 0}

form{display:grid; gap:10px}
label{font-size:13px; color:var(--muted)}
input, textarea{
  font: inherit; padding:10px 12px; border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(0,0,0,.18);
  color:var(--text);
}
textarea{min-height:140px; resize:vertical}
.notice{font-size:12px; color:var(--muted2); line-height:1.5}
.hidden{display:none !important}