:root{
  --bg:#0b0f1a;
  --card:#121a30;
  --text:#e8ecf7;
  --muted:#a9b2d0;
  --accent:#f2c36b;
  --accent2:#6fd3ff;
  --line:rgba(255,255,255,.10);
  --shadow: 0 12px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --maxw: 1120px;
  --headerH: 76px;
  --subscribeH: 64px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: radial-gradient(1200px 800px at 30% -10%, rgba(111,211,255,.18), transparent 50%),
              radial-gradient(1000px 700px at 80% 0%, rgba(242,195,107,.16), transparent 55%),
              linear-gradient(180deg, var(--bg), #070a12 70%);
  color:var(--text);
  line-height:1.55;
  padding-bottom: calc(var(--subscribeH) + 18px);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

header.site-header{
  position:sticky; top:0; z-index:50;
  height:var(--headerH);
  background: rgba(11,15,26,.75);
  backdrop-filter: blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:var(--headerH);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:44px;width:auto}
.brand .name{font-weight:800;letter-spacing:.2px}
.brand .tag{font-size:12px;color:var(--muted);margin-top:2px}

.nav{display:flex;align-items:center;gap:18px}
.nav a{
  color:var(--muted);
  font-weight:700;
  font-size:14px;
  padding:10px 10px;
  border-radius:10px;
}
.nav a:hover{color:var(--text); background: rgba(255,255,255,.06)}
.nav a.active{color:var(--text); background: rgba(255,255,255,.08)}
.nav .btn{
  background: rgba(242,195,107,.12);
  color: var(--text);
  border: 1px solid rgba(242,195,107,.35);
  padding:10px 12px;
  border-radius:12px;
}
.nav .btn:hover{background: rgba(242,195,107,.18)}

.mobile-toggle{
  display:none;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius:12px;
  padding:10px 12px;
  font-weight:800;
}
@media (max-width: 860px){
  .nav{display:none}
  .mobile-toggle{display:block}
  .nav.open{
    display:flex;
    position:absolute;
    top:var(--headerH);
    left:0; right:0;
    background: rgba(11,15,26,.92);
    border-bottom:1px solid var(--line);
    padding:12px 20px;
    flex-direction:column;
    gap:8px;
  }
  .nav.open a{padding:12px 10px}
}

.hero{padding:46px 0 22px}
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:22px;
}
@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr}
}
.hero-card{
  background: linear-gradient(180deg, rgba(18,26,48,.8), rgba(18,26,48,.55));
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:26px;
  box-shadow: var(--shadow);
  overflow:hidden;
  position:relative;
}
.hero-card:before{
  content:"";
  position:absolute; inset:-2px;
  background: radial-gradient(700px 280px at 20% 0%, rgba(111,211,255,.18), transparent 60%),
              radial-gradient(600px 260px at 80% 10%, rgba(242,195,107,.16), transparent 62%);
  pointer-events:none;
}
h1{font-size:38px;line-height:1.1;margin:0 0 10px}
@media (max-width: 520px){ h1{font-size:32px} }
.lead{color:var(--muted);font-size:16px;margin:0 0 18px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.badge{
  border:1px solid var(--line);
  background: rgba(255,255,255,.05);
  padding:8px 10px;
  border-radius:999px;
  font-weight:800;
  font-size:12px;
}
.badge.accent{border-color: rgba(242,195,107,.35); background: rgba(242,195,107,.12)}
.badge.blue{border-color: rgba(111,211,255,.32); background: rgba(111,211,255,.10)}

.section{padding:22px 0}
.section h2{margin:0 0 10px;font-size:24px}
.section p{margin:0;color:var(--muted)}

.grid-books{
  margin-top:14px;
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:16px;
}
.card{
  grid-column: span 6;
  background: linear-gradient(180deg, rgba(18,26,48,.85), rgba(18,26,48,.55));
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
  display:flex;
}
@media (max-width: 980px){
  .card{grid-column: span 12; flex-direction:column}
}
.cover{
  width: 210px;
  flex: 0 0 210px;
  background: rgba(0,0,0,.25);
}
@media (max-width: 980px){
  .cover{width:100%; flex:unset; height: 320px}
}
.cover img{height:100%;width:100%;object-fit:cover}
.card-body{
  padding:18px 18px 16px;
  display:flex;flex-direction:column;gap:10px;
  flex: 1;
}
.card-title{margin:0;font-size:18px;line-height:1.2}
.meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-weight:800;font-size:12px}
.meta .pill{border:1px solid var(--line);padding:6px 9px;border-radius:999px;background: rgba(255,255,255,.04)}
.meta .series{border-color: rgba(111,211,255,.33); background: rgba(111,211,255,.10); color: var(--text)}
.desc{color:var(--muted);font-size:14px;margin:0}
.actions{margin-top:auto;display:flex;flex-wrap:wrap;gap:10px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:8px;
  padding:10px 12px;
  border-radius: 12px;
  font-weight:900;
  font-size:13px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.06);
  color: var(--text);
  cursor:pointer;
}
.btn:hover{background: rgba(255,255,255,.10)}
.btn.primary{
  border-color: rgba(242,195,107,.40);
  background: rgba(242,195,107,.14);
}
.btn.primary:hover{background: rgba(242,195,107,.20)}
.small{font-size:12px;color:var(--muted)}
hr.sep{border:0;border-top:1px solid var(--line);margin:18px 0}

.two-col{display:grid;grid-template-columns: 1fr 1fr;gap:16px}
@media (max-width: 900px){ .two-col{grid-template-columns:1fr} }
.panel{
  background: rgba(18,26,48,.55);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:18px;
  box-shadow: var(--shadow);
}
.panel h3{margin:0 0 8px}
.panel p{margin:0;color:var(--muted)}
.panel ul{margin:10px 0 0 18px;color:var(--muted)}
.panel li{margin:6px 0}

.page{padding:26px 0}
.page h1{font-size:30px;margin-bottom:10px}
.page h2{font-size:20px;margin:20px 0 10px}
.page a.inline{color:var(--accent2);text-decoration:underline}
code{background: rgba(255,255,255,.06); border: 1px solid var(--line); padding: 2px 6px; border-radius: 8px}

.footer{margin-top:24px;padding:18px 0 32px;color:var(--muted)}
.footer .row{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding-top:16px;
}
.socials{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.socials a{
  border:1px solid var(--line);
  padding:8px 10px;border-radius:12px;
  background: rgba(255,255,255,.04);
  color:var(--text);
  font-weight:900;
  font-size:12px;
}
.socials a:hover{background: rgba(255,255,255,.08)}

.subscribe-bar{
  position:fixed;
  left:0; right:0; bottom:0;
  height:var(--subscribeH);
  background: rgba(11,15,26,.82);
  backdrop-filter: blur(12px);
  border-top:1px solid var(--line);
  z-index:60;
}
.subscribe-inner{
  height:var(--subscribeH);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.subscribe-copy{display:flex;flex-direction:column}
.subscribe-copy strong{font-size:13px}
.subscribe-copy span{font-size:12px;color:var(--muted)}
.sub-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.sub-form input{
  width:min(320px, 72vw);
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
  outline:none;
}
.sub-form input::placeholder{color: rgba(233,236,247,.55)}
.toast{
  position:fixed;
  right:16px;
  bottom: calc(var(--subscribeH) + 16px);
  background: rgba(18,26,48,.92);
  border:1px solid var(--line);
  border-radius: 14px;
  padding:12px 14px;
  color: var(--text);
  box-shadow: var(--shadow);
  opacity:0;
  transform: translateY(8px);
  transition: all .2s ease;
  z-index: 80;
  max-width: min(420px, calc(100vw - 32px));
}
.toast.show{opacity:1; transform: translateY(0)}