:root{
  --bg:#05070d;
  --bg2:#0c1220;
  --ice:#dce9ff;
  --blue:#6fa8ff;
  --blue-deep:#274b8a;
  --amber:#e79a3d;
  --amber-hot:#ffb35c;
  --text-dim:#9aa7c2;
  --radius:2px;
}

*{box-sizing:border-box;margin:0;padding:0;}

html{scroll-behavior:smooth;}

body{
  background:var(--bg);
  color:var(--ice);
  font-family:'Inter',system-ui,sans-serif;
  overflow-x:hidden;
  position:relative;
}

#bolts{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
  opacity:.55;
  pointer-events:none;
}

/* ---------- topbar ---------- */
.topbar{
  position:fixed;
  top:0;left:0;right:0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:22px 5vw;
  z-index:50;
  backdrop-filter:blur(6px);
  background:linear-gradient(180deg,rgba(5,7,13,.85),transparent);
}
.wordmark{
  font-family:'Bebas Neue',sans-serif;
  font-size:22px;
  letter-spacing:.12em;
  color:var(--ice);
}
.wordmark span{color:var(--amber-hot);}
nav a{
  color:var(--text-dim);
  text-decoration:none;
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-left:28px;
  transition:color .2s;
}
nav a:hover{color:var(--amber-hot);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  z-index:1;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:140px 5vw 80px;
  overflow:hidden;
}

.hero-bg-text{
  position:absolute;
  top:52%;
  left:50%;
  transform:translate(-50%,-50%);
  font-family:'Anton',sans-serif;
  font-size:min(26vw,320px);
  color:transparent;
  -webkit-text-stroke:1px rgba(111,168,255,.08);
  letter-spacing:.02em;
  white-space:nowrap;
  z-index:0;
  user-select:none;
  pointer-events:none;
}

.eyebrow{
  position:relative;
  font-size:12px;
  letter-spacing:.35em;
  color:var(--amber-hot);
  text-transform:uppercase;
  margin-bottom:18px;
}

.hero-title{
  position:relative;
  font-family:'Anton',sans-serif;
  font-weight:400;
  font-size:clamp(2.6rem,8vw,6rem);
  line-height:0.95;
  letter-spacing:.01em;
  color:#f4f7ff;
  text-shadow:0 0 40px rgba(111,168,255,.35), 0 0 4px rgba(255,255,255,.4);
  margin-bottom:22px;
}

.hero-quote{
  position:relative;
  font-style:italic;
  color:var(--text-dim);
  max-width:520px;
  font-size:15px;
  margin-bottom:56px;
  line-height:1.6;
}

/* ---------- 3D book ---------- */
.book-stage{
  position:relative;
  perspective:2200px;
  width:min(86vw,380px);
  height:min(86vw * 1.55,610px);
  margin-bottom:20px;
}

.book{
  position:relative;
  width:100%;
  height:100%;
  transform-style:preserve-3d;
}

.book-page{
  position:absolute;
  inset:0;
  background:linear-gradient(155deg,#141a2c,#0a0d17 70%);
  border:1px solid rgba(111,168,255,.25);
  border-radius:var(--radius);
  box-shadow:inset 0 0 60px rgba(0,0,0,.6);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:26px;
  overflow-y:auto;
}

.page-inner{
  width:100%;
  opacity:0;
  transform:translateY(10px);
  transition:opacity .5s ease .25s, transform .5s ease .25s;
}
.book.open .page-inner{opacity:1;transform:translateY(0);}

.page-label{
  display:block;
  font-size:10px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--amber-hot);
  margin-bottom:12px;
}

.page-desc{
  font-size:16.5px;
  line-height:1.7;
  color:#dbe2f2;
  margin-bottom:20px;
}

.page-price{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin-bottom:16px;
}
.price-old{
  font-size:14px;
  color:#5a6684;
  text-decoration:line-through;
}
.price-new{
  font-family:'Anton',sans-serif;
  font-size:28px;
  color:var(--amber-hot);
}

.book-select{
  margin-bottom:18px;
}
.book-select label{
  display:block;
  font-size:10px;
  letter-spacing:.15em;
  text-transform:uppercase;
  color:var(--text-dim);
  margin-bottom:6px;
}
.book-select select{
  width:100%;
  background:#0a0d17;
  border:1px solid rgba(111,168,255,.3);
  color:var(--ice);
  padding:9px 10px;
  font-size:12.5px;
  border-radius:var(--radius);
  font-family:inherit;
}

.buy-btn{
  width:100%;
  background:linear-gradient(135deg,var(--amber-hot),#d97e2e);
  color:#0a0d17;
  border:none;
  padding:14px 18px;
  font-family:'Bebas Neue',sans-serif;
  font-size:17px;
  letter-spacing:.06em;
  border-radius:var(--radius);
  cursor:pointer;
  box-shadow:0 8px 24px rgba(231,154,61,.35);
  transition:transform .15s, box-shadow .15s;
}
.buy-btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(231,154,61,.5);}
.buy-btn:active{transform:translateY(0);}

.secure-note{
  margin-top:10px;
  font-size:10.5px;
  color:var(--text-dim);
  text-align:center;
}

.book-cover{
  position:absolute;
  inset:0;
  transform-style:preserve-3d;
  transform-origin:left center;
  transition:transform .9s cubic-bezier(.4,0,.2,1);
  cursor:pointer;
  border-radius:var(--radius);
  box-shadow:0 30px 60px -10px rgba(0,0,0,.7), 0 0 0 1px rgba(111,168,255,.15);
}
.book-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:var(--radius);
  display:block;
  backface-visibility:hidden;
}
.cover-hint{
  position:absolute;
  bottom:16px;
  left:0;right:0;
  text-align:center;
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:#fff;
  opacity:.85;
  text-shadow:0 2px 8px rgba(0,0,0,.8);
}
.book.open .book-cover{
  transform:rotateY(-150deg);
  box-shadow:-30px 30px 60px -10px rgba(0,0,0,.7);
}
.book.open .cover-hint{opacity:0;}

.tap-hint{
  position:relative;
  font-size:11px;
  letter-spacing:.15em;
  color:var(--text-dim);
  text-transform:uppercase;
  animation:pulse 2s ease-in-out infinite;
}
.tap-hint.hidden{display:none;}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}

/* ---------- marquee ---------- */
.marquee{
  position:relative;
  z-index:1;
  border-top:1px solid rgba(111,168,255,.15);
  border-bottom:1px solid rgba(111,168,255,.15);
  background:#080a12;
  overflow:hidden;
  padding:14px 0;
}
.marquee-track{
  display:flex;
  width:max-content;
  animation:scroll 26s linear infinite;
}
.marquee-track span{
  font-family:'Bebas Neue',sans-serif;
  font-size:18px;
  letter-spacing:.08em;
  color:var(--blue);
  white-space:nowrap;
  padding-right:0;
}
@keyframes scroll{
  0%{transform:translateX(0);}
  100%{transform:translateX(-50%);}
}

/* ---------- about ---------- */
.about{
  position:relative;
  z-index:1;
  max-width:960px;
  margin:0 auto;
  padding:120px 6vw;
}
.about h2{
  font-family:'Anton',sans-serif;
  font-size:clamp(1.8rem,4vw,2.8rem);
  margin-bottom:44px;
  line-height:1.1;
}
.about-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:50px;
}
.about-text p{
  color:#c8d2e8;
  font-size:17.5px;
  line-height:1.8;
  margin-bottom:18px;
}
.about-points{
  list-style:none;
  border-left:2px solid var(--amber-hot);
  padding-left:22px;
}
.about-points li{
  font-size:13.5px;
  color:var(--text-dim);
  margin-bottom:14px;
  line-height:1.5;
}
.about-points strong{
  display:block;
  color:var(--ice);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  margin-bottom:2px;
}

@media (max-width:720px){
  .about-grid{grid-template-columns:1fr;}
}

/* ---------- cta final ---------- */
.cta-final{
  position:relative;
  z-index:1;
  text-align:center;
  padding:140px 6vw 160px;
}
.cta-final h2{
  font-family:'Anton',sans-serif;
  font-size:clamp(1.8rem,5vw,3.4rem);
  margin-bottom:12px;
  line-height:1.1;
}
.cta-final p{
  color:var(--text-dim);
  margin-bottom:36px;
}
.buy-btn--large{
  width:auto;
  padding:18px 42px;
  font-size:20px;
}

/* ---------- footer ---------- */
footer{
  position:relative;
  z-index:1;
  text-align:center;
  padding:34px 6vw;
  border-top:1px solid rgba(111,168,255,.15);
  color:var(--text-dim);
  font-size:12px;
}
.footer-small{margin-top:6px;}
footer a{color:var(--blue);text-decoration:none;}