/* ============================================================
   MERN LAUNCH — Premium futuristic launch site
   ============================================================ */

:root {
  --bg-0: #04070a;
  --bg-1: #070c12;
  --bg-2: #0b1218;
  --line: rgba(120, 220, 220, 0.08);
  --line-2: rgba(120, 220, 220, 0.18);
  --ink: #e7faff;
  --ink-dim: #8aa6b1;
  --ink-mute: #5a727b;

  --cy: #00e5ff;
  --tl: #3effc8;
  --gr: #34ff7c;
  --bl: #5aa9ff;

  --glow-cy: 0 0 24px rgba(0, 229, 255, 0.55), 0 0 80px rgba(0, 229, 255, 0.18);
  --glow-tl: 0 0 24px rgba(62, 255, 200, 0.5), 0 0 80px rgba(62, 255, 200, 0.18);
  --glow-gr: 0 0 24px rgba(52, 255, 124, 0.55), 0 0 80px rgba(52, 255, 124, 0.18);

  --font-display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  --font-body: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-0);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img { max-width: 100%; display: block; }

.ambient {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(900px 600px at 18% 8%, rgba(0,229,255,0.08), transparent 60%),
    radial-gradient(800px 600px at 86% 22%, rgba(62,255,200,0.06), transparent 60%),
    radial-gradient(1200px 800px at 50% 110%, rgba(52,255,124,0.08), transparent 60%),
    var(--bg-0);
}
.grid-bg {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(120,220,220,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,220,220,0.05) 1px, transparent 1px);
  background-size: 56px 56px, 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 90%);
}
.scanlines {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(255,255,255,0.012) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.7) 100%);
}
.particles-canvas {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
}

#app { position: relative; z-index: 2; }

/* NAV */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 36px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(4,7,10,0.7), rgba(4,7,10,0.0));
  border-bottom: 1px solid var(--line);
}
.nav .brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display); font-weight: 700; letter-spacing: 0.18em;
  font-size: 13px;
}
.nav .brand .mark {
  width: 28px; height: 28px; position: relative;
  background: linear-gradient(135deg, var(--gr), var(--cy));
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  box-shadow: var(--glow-tl);
}
.nav .links { display: flex; gap: 28px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; color: var(--ink-dim); text-transform: uppercase; }
.nav .links a:hover { color: var(--tl); text-shadow: 0 0 8px rgba(62,255,200,0.6); }
.nav .cta {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 10px 18px; border: 1px solid var(--tl); color: var(--tl);
  position: relative; overflow: hidden;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: all .25s ease;
}
.nav .cta:hover { background: var(--tl); color: #06120e; box-shadow: var(--glow-tl); }
.nav .cta-solid {
  background: linear-gradient(135deg, var(--tl), var(--cy));
  color: #04120f !important;
  font-weight: 700;
  border: 0;
  box-shadow: 0 0 0 1px var(--tl), 0 0 20px rgba(62,255,200,0.45);
}
.nav .cta-solid:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px var(--tl), 0 0 30px rgba(62,255,200,0.75); }

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 36px 80px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}
.hero .meta {
  display: flex; align-items: center; gap: 12px; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--tl);
  margin-bottom: 22px;
}
.hero .meta .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gr); box-shadow: var(--glow-gr); animation: pulse 1.4s infinite; }
.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(44px, 6.4vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  text-wrap: balance;
}
.hero h1 .accent {
  background: linear-gradient(180deg, var(--cy), var(--tl) 60%, var(--gr));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 18px rgba(0,229,255,0.35));
}
.hero .sub {
  max-width: 540px; color: var(--ink-dim); font-size: 17px; line-height: 1.55; margin-bottom: 32px;
}
.hero .ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
  padding: 16px 26px; position: relative; transition: all .25s ease;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.btn-primary {
  background: linear-gradient(135deg, var(--tl), var(--cy));
  color: #04120f;
  font-weight: 700;
  box-shadow: 0 0 0 1px rgba(62,255,200,0.6), 0 0 30px rgba(62,255,200,0.35), 0 0 60px rgba(0,229,255,0.2);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px var(--tl), 0 0 40px rgba(62,255,200,0.6), 0 0 90px rgba(0,229,255,0.35); }
.btn-ghost { border: 1px solid rgba(140,210,210,0.3); color: var(--ink); background: rgba(255,255,255,0.02); }
.btn-ghost:hover { border-color: var(--tl); color: var(--tl); box-shadow: var(--glow-tl); }

.hero .stats-row {
  margin-top: 56px;
  display: flex; gap: 36px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--ink-dim); text-transform: uppercase;
}
.hero .stats-row .stat strong { display: block; font-family: var(--font-display); font-size: 26px; color: var(--ink); letter-spacing: 0; }
.hero .stats-row .stat strong .u { color: var(--tl); }
.hero .stats-row .price-stat strong {
  background: linear-gradient(180deg, var(--tl), var(--cy));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 12px rgba(62,255,200,0.4));
}
.hero .stats-row .price-stat { color: var(--tl); }

/* book scene */
.book-scene {
  position: relative; height: min(720px, 80vh);
  perspective: 1800px;
  perspective-origin: 50% 40%;
  display: flex; align-items: center; justify-content: center;
}
.book-stage {
  position: relative;
  width: 280px; height: 400px;
  transform-style: preserve-3d;
  animation: book-rotate 22s ease-in-out infinite;
}
@keyframes book-rotate {
  0%   { transform: rotateY(-22deg) rotateX(8deg) translateY(0); }
  50%  { transform: rotateY(22deg) rotateX(8deg) translateY(-12px); }
  100% { transform: rotateY(-22deg) rotateX(8deg) translateY(0); }
}
.book-stage .face { position: absolute; inset: 0; transform-style: preserve-3d; }
.book-stage .front, .book-stage .back {
  background-size: cover; background-position: center;
  border-radius: 4px 8px 8px 4px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.7), inset 0 0 1px rgba(255,255,255,0.1);
}
.book-stage .front {
  background-image: url('assets/book-front.jpg');
  transform: translateZ(22px);
}
.book-stage .back {
  background-image: url('assets/book-back.jpg');
  transform: translateZ(-22px) rotateY(180deg);
}
.book-stage .spine {
  position: absolute; top: 0; bottom: 0; left: 0; width: 44px;
  background: linear-gradient(90deg, #050a0d, #0a1116 50%, #050a0d);
  transform: rotateY(-90deg) translateZ(0) translateX(-22px);
  transform-origin: left center;
  display: flex; align-items: center; justify-content: center;
  writing-mode: vertical-rl;
  font-family: var(--font-display); font-weight: 700; letter-spacing: 0.2em;
  font-size: 12px;
}
.book-stage .spine .s-title { color: var(--gr); text-shadow: 0 0 10px var(--gr); }
.book-stage .spine .s-and { color: var(--cy); text-shadow: 0 0 10px var(--cy); margin: 6px 0; }
.book-stage .top, .book-stage .bottom, .book-stage .fore {
  display: none;
}

.book-floor {
  position: absolute; left: 50%; bottom: 4%;
  width: 460px; height: 60px; transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(62,255,200,0.35), transparent 70%);
  filter: blur(8px);
  animation: glow-pulse 4s ease-in-out infinite;
}
@keyframes glow-pulse {
  0%,100% { opacity: 0.6; transform: translateX(-50%) scaleX(1); }
  50%     { opacity: 1; transform: translateX(-50%) scaleX(1.08); }
}

.layer-stack { position: absolute; inset: 0; pointer-events: none; transform-style: preserve-3d; }
.layer {
  position: absolute; left: 50%; top: 20%;
  width: 140px; height: 140px;
  transform-style: preserve-3d;
  transform: translateX(-50%) rotateX(58deg) rotateZ(45deg);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; letter-spacing: 0.18em;
  color: rgba(255,255,255,0.92); font-size: 12px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.18), inset 0 0 30px rgba(255,255,255,0.08);
  animation: float-y 4.6s ease-in-out infinite;
}
.layer .glyph { transform: rotateZ(-45deg); display: flex; align-items: center; gap: 8px; }
.layer.l-mongo   { background: linear-gradient(135deg, rgba(52,255,124,0.55), rgba(52,255,124,0.18)); box-shadow: 0 0 0 1px rgba(52,255,124,0.7), 0 0 40px rgba(52,255,124,0.45), inset 0 0 30px rgba(52,255,124,0.18); }
.layer.l-express { background: linear-gradient(135deg, rgba(220,235,240,0.5), rgba(220,235,240,0.12)); box-shadow: 0 0 0 1px rgba(220,235,240,0.6), 0 0 40px rgba(220,235,240,0.3); }
.layer.l-react   { background: linear-gradient(135deg, rgba(90,180,255,0.55), rgba(90,180,255,0.18)); box-shadow: 0 0 0 1px rgba(90,180,255,0.7), 0 0 40px rgba(90,180,255,0.45), inset 0 0 30px rgba(90,180,255,0.18); }
.layer.l-node    { background: linear-gradient(135deg, rgba(190,235,150,0.5), rgba(190,235,150,0.12)); box-shadow: 0 0 0 1px rgba(190,235,150,0.7), 0 0 40px rgba(190,235,150,0.3); }

@keyframes float-y {
  0%,100% { translate: 0 0; }
  50%     { translate: 0 -10px; }
}

.float-badge {
  position: absolute; padding: 8px 12px; border: 1px solid var(--line-2);
  background: rgba(8,16,20,0.6); backdrop-filter: blur(8px);
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-dim); border-radius: 4px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  animation: float-y 5s ease-in-out infinite;
}
.float-badge .v { color: var(--tl); margin-left: 6px; }
.float-badge.b1 { top: 8%; right: 6%; animation-delay: -.6s; }
.float-badge.b2 { top: 38%; left: 0%; animation-delay: -1.4s; }
.float-badge.b3 { bottom: 14%; right: 4%; animation-delay: -2.1s; }

/* SECTION SHELL */
section { position: relative; padding: 120px 36px; }
.section-head {
  display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: end;
  margin-bottom: 56px;
}
.section-head .tag {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--tl);
  display: flex; align-items: center; gap: 10px;
}
.section-head .tag::before { content: ""; width: 28px; height: 1px; background: var(--tl); box-shadow: var(--glow-tl); }
.section-head h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(36px, 4.4vw, 64px); letter-spacing: -0.02em;
  margin: 14px 0 0; line-height: 1; text-wrap: balance;
}
.section-head h2 .em {
  background: linear-gradient(180deg, var(--cy), var(--gr));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-head .lede { color: var(--ink-dim); max-width: 520px; justify-self: end; line-height: 1.6; }

/* ABOUT */
.about {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}
.about-card {
  position: relative; padding: 26px 24px 28px;
  background: linear-gradient(180deg, rgba(10,18,22,0.7), rgba(8,14,18,0.7));
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.about-card::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(62,255,200,0.06));
  pointer-events: none;
}
.about-card::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--tl), transparent);
  opacity: 0.0; transition: opacity .35s ease;
}
.about-card:hover { transform: translateY(-4px); border-color: rgba(62,255,200,0.3); box-shadow: 0 18px 60px rgba(0,0,0,0.5), 0 0 30px rgba(62,255,200,0.12); }
.about-card:hover::after { opacity: 1; }
.about-card .ix { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; color: var(--ink-mute); }
.about-card h3 { font-family: var(--font-display); font-size: 22px; margin: 10px 0 8px; }
.about-card p { color: var(--ink-dim); font-size: 14px; line-height: 1.55; margin: 0; }
.about-card .badge { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; color: var(--tl); padding: 6px 10px; border: 1px solid rgba(62,255,200,0.3); border-radius: 999px; margin-top: 14px; text-transform: uppercase; }

.about .a1 { grid-column: span 5; }
.about .a2 { grid-column: span 4; }
.about .a3 { grid-column: span 3; }
.about .a4 { grid-column: span 4; }
.about .a5 { grid-column: span 4; }
.about .a6 { grid-column: span 4; }

.about-card.feat {
  background:
    radial-gradient(600px 200px at 0% 100%, rgba(0,229,255,0.12), transparent 60%),
    linear-gradient(180deg, rgba(10,18,22,0.8), rgba(8,14,18,0.8));
  min-height: 220px;
}
.about-card.feat .big {
  font-family: var(--font-display); font-size: 56px; line-height: 1; letter-spacing: -0.02em;
  background: linear-gradient(180deg, var(--cy), var(--tl));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin: 16px 0;
}

/* STACK */
.stack-viz {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: center;
}
.stack-3d {
  position: relative; height: 520px;
  perspective: 1400px;
}
.stack-stage {
  position: absolute; inset: 0;
  transform-style: preserve-3d;
  transform: rotateX(58deg) rotateZ(0deg);
  display: flex; align-items: center; justify-content: center;
}
.stack-block {
  position: absolute; left: 50%; top: 50%;
  width: 220px; height: 220px;
  transform: translate(-50%, -50%);
  border-radius: 14px;
  display: flex; align-items: flex-end; justify-content: flex-start;
  padding: 16px;
  font-family: var(--font-display); font-weight: 700; letter-spacing: 0.18em; font-size: 13px;
  cursor: pointer;
  transition: transform .5s cubic-bezier(.2,.7,.2,1), filter .35s ease;
}
.stack-block .lbl { transform: rotate(0deg); color: rgba(255,255,255,0.92); }
.stack-block.sb-node    { transform: translate(-50%,-50%) translateZ(180px); background: linear-gradient(135deg, rgba(190,235,150,0.55), rgba(190,235,150,0.15)); box-shadow: 0 0 0 1px rgba(190,235,150,0.7), 0 0 50px rgba(190,235,150,0.45), inset 0 0 40px rgba(190,235,150,0.18); }
.stack-block.sb-react   { transform: translate(-50%,-50%) translateZ(60px); background: linear-gradient(135deg, rgba(90,180,255,0.6), rgba(90,180,255,0.18)); box-shadow: 0 0 0 1px rgba(90,180,255,0.7), 0 0 50px rgba(90,180,255,0.45), inset 0 0 40px rgba(90,180,255,0.18); }
.stack-block.sb-express { transform: translate(-50%,-50%) translateZ(-60px); background: linear-gradient(135deg, rgba(220,235,240,0.55), rgba(220,235,240,0.15)); box-shadow: 0 0 0 1px rgba(220,235,240,0.7), 0 0 50px rgba(220,235,240,0.3), inset 0 0 40px rgba(220,235,240,0.16); }
.stack-block.sb-mongo   { transform: translate(-50%,-50%) translateZ(-180px); background: linear-gradient(135deg, rgba(52,255,124,0.6), rgba(52,255,124,0.18)); box-shadow: 0 0 0 1px rgba(52,255,124,0.7), 0 0 50px rgba(52,255,124,0.45), inset 0 0 40px rgba(52,255,124,0.18); }

.stack-block.active    { filter: brightness(1.25); }
.stack-block.sb-node.active    { transform: translate(-50%,-50%) translateZ(240px) scale(1.06); }
.stack-block.sb-react.active   { transform: translate(-50%,-50%) translateZ(120px) scale(1.06); }
.stack-block.sb-express.active { transform: translate(-50%,-50%) translateZ(0px)   scale(1.06); }
.stack-block.sb-mongo.active   { transform: translate(-50%,-50%) translateZ(-120px) scale(1.06); }

.stack-info { display: flex; flex-direction: column; gap: 16px; }
.stack-row {
  display: grid; grid-template-columns: 56px 1fr auto; align-items: center; gap: 18px;
  padding: 18px 18px;
  background: linear-gradient(180deg, rgba(10,18,22,0.6), rgba(8,14,18,0.6));
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: all .3s ease;
  position: relative; overflow: hidden;
}
.stack-row::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--c); opacity: 0; transition: opacity .3s;
  box-shadow: 0 0 18px var(--c);
}
.stack-row:hover, .stack-row.active { border-color: rgba(120,210,210,0.3); background: linear-gradient(180deg, rgba(14,24,30,0.8), rgba(10,18,22,0.8)); }
.stack-row:hover::before, .stack-row.active::before { opacity: 1; }
.stack-row .ix2 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; color: var(--ink-mute); }
.stack-row .name { font-family: var(--font-display); font-size: 20px; }
.stack-row .name .role { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; color: var(--ink-mute); text-transform: uppercase; margin-top: 4px; }
.stack-row .pct { font-family: var(--font-mono); font-size: 12px; color: var(--c); letter-spacing: 0.1em; }

/* FEATURES */
.features { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
.feat-card {
  grid-column: span 3;
  position: relative; padding: 22px 20px 24px;
  background: linear-gradient(180deg, rgba(10,18,22,0.6), rgba(8,14,18,0.6));
  border: 1px solid var(--line);
  border-radius: 10px;
  min-height: 180px;
  overflow: hidden;
  transition: all .35s ease;
}
.feat-card:hover { transform: translateY(-3px); border-color: rgba(62,255,200,0.3); }
.feat-card .ic {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: rgba(62,255,200,0.08); border: 1px solid rgba(62,255,200,0.25); border-radius: 8px;
  color: var(--tl); font-family: var(--font-mono); font-weight: 700; font-size: 14px;
  box-shadow: inset 0 0 14px rgba(62,255,200,0.12);
  margin-bottom: 16px;
}
.feat-card h4 { font-family: var(--font-display); font-size: 17px; margin: 0 0 6px; }
.feat-card p { color: var(--ink-dim); font-size: 13.5px; line-height: 1.5; margin: 0; }
.feat-card .corner {
  position: absolute; top: 0; right: 0; width: 16px; height: 16px;
  border-top: 1px solid var(--tl); border-right: 1px solid var(--tl);
}
.feat-card .corner.bl {
  top: auto; right: auto; bottom: 0; left: 0;
  border: 0; border-bottom: 1px solid var(--tl); border-left: 1px solid var(--tl);
}

/* GLOBAL MAP */
.global-wrap { position: relative; }
.world-stage {
  position: relative;
  background: radial-gradient(800px 500px at 50% 50%, rgba(0,229,255,0.08), transparent 70%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 40px;
  overflow: hidden;
}
.world-stage::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(rgba(120,220,220,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,220,220,0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.world-canvas {
  position: relative;
  width: 100%; aspect-ratio: 2 / 1;
  max-height: 560px; margin: 0 auto;
}
.dot-map { width: 100%; height: 100%; }
.world-overlay {
  position: absolute; left: 50%; top: 8%; transform: translateX(-50%);
  font-family: var(--font-display); text-align: center;
}
.world-overlay .big {
  font-size: clamp(40px, 5vw, 78px); letter-spacing: -0.02em;
  background: linear-gradient(180deg, var(--cy), var(--gr));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 20px rgba(0,229,255,0.3));
  margin: 0; line-height: 1;
}
.world-overlay .sub { font-family: var(--font-mono); color: var(--ink-dim); font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase; margin-top: 8px; }

.platforms { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-top: 36px; }
.plat-badge {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 22px;
  background: rgba(8,16,20,0.6); border: 1px solid var(--line-2);
  border-radius: 999px;
  font-family: var(--font-display); font-weight: 600; letter-spacing: 0.05em;
  transition: all .25s ease;
  backdrop-filter: blur(8px);
}
.plat-badge:hover { border-color: var(--tl); box-shadow: var(--glow-tl); transform: translateY(-2px); }
.plat-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gr); box-shadow: 0 0 10px var(--gr); }
.plat-badge .meta { font-family: var(--font-mono); font-size: 10px; color: var(--ink-mute); letter-spacing: 0.18em; text-transform: uppercase; margin-left: 4px; }

/* AUTHOR */
.author {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: center;
  padding: 100px 36px;
}
.author-orb {
  position: relative; aspect-ratio: 1; max-width: 460px; margin: auto;
}
.author-orb .ring {
  position: absolute; inset: 0; border: 1px dashed rgba(62,255,200,0.3); border-radius: 50%;
  animation: spin 32s linear infinite;
}
.author-orb .ring.r2 { inset: 8%; border-color: rgba(0,229,255,0.25); animation-duration: 24s; animation-direction: reverse; }
.author-orb .ring.r3 { inset: 16%; border-color: rgba(52,255,124,0.2); animation-duration: 40s; }
.author-orb .core {
  position: absolute; inset: 22%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(62,255,200,0.3), transparent 60%),
    linear-gradient(135deg, #0a1418, #06090d);
  border: 1px solid rgba(62,255,200,0.25);
  box-shadow: inset 0 0 60px rgba(62,255,200,0.18), 0 0 60px rgba(0,229,255,0.15);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 48px; font-weight: 700;
  color: var(--tl);
  text-shadow: var(--glow-tl);
  letter-spacing: 0.05em;
}
@keyframes spin { to { transform: rotate(360deg); } }
.author-orb .blip {
  position: absolute; width: 10px; height: 10px; border-radius: 50%;
  background: var(--gr); box-shadow: var(--glow-gr);
  top: 50%; left: 50%;
}
.author-orb .blip.b1 { transform: translate(180px, -10px); animation: pulse 1.6s infinite; }
.author-orb .blip.b2 { transform: translate(-170px, 80px); background: var(--cy); box-shadow: var(--glow-cy); animation: pulse 2.1s infinite; }
.author-orb .blip.b3 { transform: translate(40px, -200px); background: var(--tl); box-shadow: var(--glow-tl); animation: pulse 1.8s infinite; }

.author-body .kicker { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.3em; color: var(--tl); text-transform: uppercase; }
.author-body h2 { font-family: var(--font-display); font-size: clamp(48px, 6vw, 88px); margin: 14px 0 14px; letter-spacing: -0.02em; line-height: 0.95; }
.author-body .role { font-family: var(--font-mono); color: var(--ink-dim); letter-spacing: 0.2em; text-transform: uppercase; font-size: 13px; margin-bottom: 22px; }
.author-body p { color: var(--ink-dim); line-height: 1.7; max-width: 540px; font-size: 16px; }
.author-body .creds { display: flex; gap: 20px; margin-top: 28px; flex-wrap: wrap; }
.author-body .cred {
  padding: 10px 16px; border: 1px solid var(--line-2); border-radius: 4px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.2em; color: var(--ink-dim); text-transform: uppercase;
}
.author-body .cred strong { color: var(--tl); margin-right: 6px; }

/* PREVIOUS BOOKS */
.prev-books { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.prev-book {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(8,14,18,0.5);
  transition: all .3s ease;
}
.prev-book:hover { border-color: rgba(62,255,200,0.3); transform: translateY(-2px); }
.prev-book .yr { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; color: var(--ink-mute); text-transform: uppercase; }
.prev-book .ttl { font-family: var(--font-display); font-size: 15px; margin-top: 8px; line-height: 1.3; }
.prev-book .meta { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.15em; color: var(--tl); margin-top: 8px; text-transform: uppercase; }

/* STATS */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat-card {
  position: relative; padding: 36px 28px;
  background:
    radial-gradient(400px 200px at 0% 100%, rgba(62,255,200,0.08), transparent 60%),
    linear-gradient(180deg, rgba(10,18,22,0.6), rgba(8,14,18,0.6));
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.stat-card .num {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(48px, 5.5vw, 86px); line-height: 1; letter-spacing: -0.02em;
  background: linear-gradient(180deg, #fff, var(--tl));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  display: flex; align-items: baseline; gap: 6px;
}
.stat-card .num .suffix { font-size: 32px; color: var(--tl); -webkit-text-fill-color: var(--tl); }
.stat-card .label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-dim); margin-top: 14px; }
.stat-card .bar { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--tl), transparent); }

/* WHO IT'S FOR (replacing testimonials) */
.audience { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.aud-card {
  position: relative; padding: 32px 28px 30px;
  background: linear-gradient(180deg, rgba(10,18,22,0.7), rgba(8,14,18,0.7));
  border: 1px solid rgba(120,210,210,0.18);
  border-radius: 10px;
  overflow: hidden;
  backdrop-filter: blur(10px);
}
.aud-card::before {
  content: ""; position: absolute; inset: 0; padding: 1px;
  background: linear-gradient(135deg, rgba(0,229,255,0.4), transparent 40%, transparent 60%, rgba(62,255,200,0.4));
  border-radius: 10px;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; opacity: 0.5;
}
.aud-card .ix { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; color: var(--ink-mute); text-transform: uppercase; }
.aud-card h3 { font-family: var(--font-display); font-size: 22px; margin: 12px 0 14px; }
.aud-card p { color: var(--ink-dim); font-size: 14px; line-height: 1.6; margin: 0; }
.aud-card .checklist { list-style: none; padding: 0; margin: 18px 0 0; }
.aud-card .checklist li { font-family: var(--font-mono); font-size: 11px; color: var(--ink-dim); letter-spacing: 0.05em; padding: 4px 0 4px 18px; position: relative; }
.aud-card .checklist li::before { content: "▸"; position: absolute; left: 0; color: var(--tl); }

/* LAUNCH OFFER */
.launch-offer {
  position: relative;
  padding: 100px 36px;
}
.launch-offer::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 360px at 50% 30%, rgba(62,255,200,0.10), transparent 70%),
    radial-gradient(900px 500px at 50% 100%, rgba(0,229,255,0.08), transparent 70%);
  pointer-events: none;
}
.lo-inner {
  position: relative; z-index: 1;
  max-width: 920px; margin: 0 auto;
  padding: 48px 44px;
  background: linear-gradient(180deg, rgba(14,24,30,0.85), rgba(8,14,18,0.85));
  border: 1px solid rgba(62,255,200,0.35);
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 0 0 1px rgba(62,255,200,0.2), 0 0 60px rgba(62,255,200,0.15), 0 0 120px rgba(0,229,255,0.08);
  backdrop-filter: blur(12px);
}
.lo-inner::before {
  content: ""; position: absolute; inset: 0; padding: 1px;
  background: linear-gradient(135deg, rgba(62,255,200,0.6), transparent 30%, transparent 70%, rgba(0,229,255,0.6));
  border-radius: 16px;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.lo-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(62,255,200,0.4);
  border-radius: 999px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.3em;
  color: var(--tl); text-transform: uppercase;
  background: rgba(62,255,200,0.06);
}
.lo-pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gr); box-shadow: var(--glow-gr);
  animation: pulse 1.4s infinite;
}
.lo-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(28px, 4.4vw, 48px); line-height: 1.05;
  letter-spacing: -0.02em; margin: 24px 0 16px;
}
.lo-em {
  background: linear-gradient(180deg, var(--tl), var(--cy));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lo-sub {
  color: var(--ink-dim); font-size: 16px; line-height: 1.6;
  max-width: 620px; margin: 0 auto 32px;
}
.lo-pricing {
  display: flex; align-items: baseline; justify-content: center; gap: 18px;
  margin-bottom: 6px; flex-wrap: wrap;
}
.lo-price { display: inline-flex; align-items: baseline; gap: 14px; }
.lo-price-old {
  font-family: var(--font-display); font-size: 28px;
  color: var(--ink-mute); text-decoration: line-through;
  text-decoration-color: rgba(200, 80, 80, 0.7);
}
.lo-price-new {
  font-family: var(--font-display); font-weight: 700; font-size: 56px;
  background: linear-gradient(180deg, var(--tl), var(--cy));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 18px rgba(62,255,200,0.4));
  line-height: 1;
}
.lo-save {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(52,255,124,0.12);
  border: 1px solid rgba(52,255,124,0.4);
  border-radius: 4px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.15em;
  color: var(--gr); text-transform: uppercase;
}
.lo-ship {
  margin-top: 12px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--ink-dim); text-transform: uppercase;
}
.lo-includes {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 28px;
  max-width: 580px; margin: 36px auto;
  text-align: left;
}
.lo-inc-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--ink); line-height: 1.4;
}
.lo-tick {
  flex-shrink: 0;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(62,255,200,0.15);
  border: 1px solid rgba(62,255,200,0.4);
  border-radius: 50%;
  color: var(--tl); font-weight: 700; font-size: 12px;
}
.lo-counter {
  margin: 32px auto 28px; max-width: 480px;
}
.lo-counter-bar-wrap {
  height: 8px; border-radius: 999px;
  background: rgba(120,210,210,0.12);
  overflow: hidden;
}
.lo-counter-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gr), var(--tl), var(--cy));
  box-shadow: 0 0 16px rgba(62,255,200,0.5);
  border-radius: 999px;
  transition: width 0.6s ease;
}
.lo-counter-text {
  margin-top: 12px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em;
  color: var(--ink-dim); text-transform: uppercase;
}
.lo-counter-text strong {
  color: var(--tl); font-family: var(--font-display); font-size: 18px;
  letter-spacing: 0; margin-right: 2px;
}
.lo-countdown { margin: 24px 0 36px; }
.lo-cd-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.3em;
  color: var(--ink-mute); text-transform: uppercase; margin-bottom: 14px;
}
.lo-cd-grid {
  display: inline-grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  justify-content: center;
}
.lo-cd-unit {
  min-width: 78px;
  padding: 14px 8px;
  background: rgba(8,16,20,0.7);
  border: 1px solid rgba(62,255,200,0.2);
  border-radius: 8px;
}
.lo-cd-num {
  font-family: var(--font-display); font-weight: 700; font-size: 36px;
  line-height: 1;
  background: linear-gradient(180deg, #fff, var(--tl));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lo-cd-lbl {
  margin-top: 6px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em;
  color: var(--ink-mute); text-transform: uppercase;
}
.lo-claim {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--font-display); font-weight: 700; font-size: 17px;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 20px 36px;
  background: linear-gradient(135deg, var(--tl), var(--cy));
  color: #04120f;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(62,255,200,0.5), 0 0 30px rgba(62,255,200,0.4);
  transition: all .25s ease;
  animation: lo-pulse-btn 2.4s ease-in-out infinite;
}
.lo-claim:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(62,255,200,0.9), 0 0 50px rgba(62,255,200,0.7); }
.lo-claim .lo-arrow { transition: transform .3s; }
.lo-claim:hover .lo-arrow { transform: translateX(4px); }
@keyframes lo-pulse-btn {
  0%,100% { box-shadow: 0 0 0 1px rgba(62,255,200,0.5), 0 0 30px rgba(62,255,200,0.4); }
  50%     { box-shadow: 0 0 0 1px rgba(62,255,200,0.9), 0 0 50px rgba(62,255,200,0.7); }
}

/* Razorpay Payment Button wrapper */
.lo-rzp-wrap {
  display: flex; justify-content: center; align-items: center;
  margin: 8px auto;
  min-height: 60px;
}
.lo-rzp-form { display: inline-block; }
.lo-rzp-form button {
  /* Razorpay injects a styled button; we don't override it */
}

/* (kept for legacy / future use, no longer rendered) */
/* Inline order form */
.lo-form {
  display: flex; flex-direction: column; gap: 18px;
  max-width: 480px; margin: 28px auto 0;
  text-align: left;
}
.lo-form-row { display: flex; flex-direction: column; gap: 6px; position: relative; }
.lo-form label {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-dim);
}
.lo-form input,
.lo-form textarea {
  font-family: var(--font-body); font-size: 15px;
  color: var(--ink);
  background: rgba(4, 10, 14, 0.6);
  border: 1px solid rgba(120, 210, 210, 0.18);
  border-radius: 6px;
  padding: 12px 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
  resize: vertical;
}
.lo-form input:focus,
.lo-form textarea:focus {
  outline: 0;
  border-color: var(--tl);
  box-shadow: 0 0 0 3px rgba(62, 255, 200, 0.15);
}
.lo-form input::placeholder,
.lo-form textarea::placeholder {
  color: var(--ink-mute);
}
.lo-hint {
  position: absolute; right: 4px; top: 0;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-mute);
}
.lo-error {
  padding: 12px 14px;
  background: rgba(220, 80, 80, 0.1);
  border: 1px solid rgba(220, 80, 80, 0.35);
  border-radius: 6px;
  color: #ffb0b0;
  font-size: 13px;
  font-family: var(--font-mono);
}
.lo-form-actions {
  display: flex; gap: 12px; align-items: center; justify-content: flex-end;
  margin-top: 8px; flex-wrap: wrap;
}
.lo-cancel {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-dim);
  padding: 14px 20px;
  background: transparent;
  border: 1px solid rgba(120, 210, 210, 0.2);
  border-radius: 6px;
  cursor: pointer;
  transition: all .2s ease;
}
.lo-cancel:hover { color: var(--ink); border-color: rgba(120, 210, 210, 0.5); }
.lo-pay-btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 15px;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 16px 28px;
  background: linear-gradient(135deg, var(--tl), var(--cy));
  color: #04120f;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(62, 255, 200, 0.5), 0 0 24px rgba(62, 255, 200, 0.35);
  transition: all .25s ease;
}
.lo-pay-btn:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px var(--tl), 0 0 40px rgba(62, 255, 200, 0.6); }
.lo-pay-btn .lo-arrow { transition: transform .3s; }
.lo-pay-btn:hover .lo-arrow { transform: translateX(4px); }

/* Success state */
.lo-success {
  margin-top: 8px;
  padding: 32px 28px;
  background: linear-gradient(180deg, rgba(14,28,24,0.85), rgba(8,18,16,0.85));
  border: 1px solid rgba(52, 255, 124, 0.4);
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 0 0 1px rgba(52, 255, 124, 0.2), 0 0 40px rgba(52, 255, 124, 0.12);
}
.lo-success-icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(52, 255, 124, 0.15);
  border: 1px solid rgba(52, 255, 124, 0.55);
  color: var(--gr);
  font-size: 28px; font-weight: 700;
  box-shadow: var(--glow-gr);
}
.lo-success-title {
  font-family: var(--font-display); font-weight: 700; font-size: 26px;
  letter-spacing: -0.01em;
  background: linear-gradient(180deg, var(--gr), var(--tl));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 14px;
}
.lo-success-body {
  color: var(--ink-dim); line-height: 1.6;
  max-width: 480px; margin: 0 auto 12px;
  font-size: 15px;
}
.lo-success-body strong { color: var(--ink); }
.lo-success-pid {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  background: rgba(8, 16, 20, 0.7);
  border: 1px solid rgba(62, 255, 200, 0.3);
  border-radius: 999px;
  margin: 14px 0;
}
.lo-pid-lbl {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-mute);
}
.lo-pid-val {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--tl);
  letter-spacing: 0.05em;
}
.lo-soldout {
  margin: 12px auto;
  padding: 18px 24px;
  max-width: 540px;
  background: rgba(200,80,80,0.1);
  border: 1px solid rgba(200,80,80,0.4);
  border-radius: 8px;
  color: #ffb0b0;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.05em;
}
.lo-microcopy {
  margin-top: 20px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.05em;
  color: var(--ink-mute);
  max-width: 540px; margin-left: auto; margin-right: auto;
  line-height: 1.6;
}

@media (max-width: 640px) {
  .launch-offer { padding: 60px 16px; }
  .lo-inner { padding: 32px 22px; }
  .lo-includes { grid-template-columns: 1fr; }
  .lo-cd-unit { min-width: 64px; padding: 10px 6px; }
  .lo-cd-num { font-size: 28px; }
  .lo-price-new { font-size: 42px; }
  .lo-claim { padding: 16px 22px; font-size: 14px; }
}

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 920px; margin: 0 auto; }
.faq-item {
  position: relative;
  background: linear-gradient(180deg, rgba(10,18,22,0.6), rgba(8,14,18,0.6));
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  transition: all .3s ease;
}
.faq-item:hover { border-color: rgba(62,255,200,0.25); }
.faq-item.open { border-color: rgba(62,255,200,0.4); background: linear-gradient(180deg, rgba(14,24,30,0.8), rgba(10,18,22,0.8)); }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 26px;
  font-family: var(--font-display); font-size: 17px; font-weight: 600;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}
.faq-q:hover { color: var(--tl); }
.faq-icon {
  font-family: var(--font-mono); font-size: 22px;
  color: var(--tl);
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(62,255,200,0.3); border-radius: 50%;
  flex-shrink: 0;
}
.faq-item.open .faq-icon { background: rgba(62,255,200,0.15); }
.faq-a {
  padding: 0 26px 24px;
  color: var(--ink-dim);
  font-size: 15px; line-height: 1.65;
  max-width: 720px;
}

/* FINAL CTA */
.final {
  position: relative;
  padding: 160px 36px 140px;
  text-align: center;
  overflow: hidden;
}
.final::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 360px at 50% 30%, rgba(62,255,200,0.18), transparent 70%),
    radial-gradient(900px 500px at 50% 100%, rgba(0,229,255,0.18), transparent 70%);
  pointer-events: none;
}
.final .eyebrow { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.4em; text-transform: uppercase; color: var(--tl); position: relative; }
.final h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(48px, 8vw, 128px); line-height: 0.95; letter-spacing: -0.02em;
  margin: 24px auto 36px; max-width: 18ch; text-wrap: balance;
  position: relative;
}
.final h2 .gradient {
  background: linear-gradient(180deg, var(--cy), var(--gr));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.btn-mega {
  display: inline-flex; align-items: center; gap: 18px;
  font-family: var(--font-display); font-weight: 700; font-size: 22px; letter-spacing: 0.16em; text-transform: uppercase;
  padding: 24px 44px;
  background: linear-gradient(135deg, var(--tl), var(--cy));
  color: #04120f;
  position: relative;
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
  box-shadow: 0 0 0 1px var(--tl), 0 0 60px rgba(62,255,200,0.45), 0 0 120px rgba(0,229,255,0.3);
  animation: mega-pulse 2.4s ease-in-out infinite;
}
.btn-mega:hover { transform: translateY(-2px); }
@keyframes mega-pulse {
  0%,100% { box-shadow: 0 0 0 1px var(--tl), 0 0 60px rgba(62,255,200,0.45), 0 0 120px rgba(0,229,255,0.3); }
  50%     { box-shadow: 0 0 0 1px var(--tl), 0 0 90px rgba(62,255,200,0.75), 0 0 180px rgba(0,229,255,0.5); }
}
.btn-mega .arrow { display: inline-block; transition: transform .3s ease; }
.btn-mega:hover .arrow { transform: translateX(6px); }
.final .price-row {
  margin-top: 36px; display: flex; gap: 24px; align-items: center; justify-content: center; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; color: var(--ink-dim); text-transform: uppercase;
}
.final .price-row .price { color: var(--ink); font-family: var(--font-display); font-size: 22px; letter-spacing: 0; }

.buy-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 28px; }
.buy-btn {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 14px 22px; border: 1px solid rgba(140,210,210,0.3);
  background: rgba(8,16,20,0.6); color: var(--ink);
  backdrop-filter: blur(8px);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: all .25s ease;
}
.buy-btn:hover { border-color: var(--tl); color: var(--tl); box-shadow: var(--glow-tl); }

/* footer */
.footer {
  position: relative; padding: 60px 36px 40px;
  border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px;
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-mute); letter-spacing: 0.18em; text-transform: uppercase;
}
.footer .center { text-align: center; }
.footer .right { text-align: right; }
.footer a:hover { color: var(--tl); }

/* Visitor counter */
.visitor-count {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 10px;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-mute); letter-spacing: 0.18em; text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}
.vc-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--gr); box-shadow: 0 0 6px var(--gr);
  animation: pulse 2s infinite;
}
.vc-num {
  font-family: var(--font-display); font-size: 13px; font-weight: 600;
  color: var(--tl); letter-spacing: 0;
}
.vc-lbl { color: var(--ink-mute); }
@keyframes fadeIn { to { opacity: 1; } }

/* HUD ticker */
.ticker {
  position: relative; padding: 14px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: rgba(8,14,18,0.5);
}
.ticker .track { display: flex; gap: 60px; white-space: nowrap; animation: tick 38s linear infinite; will-change: transform; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--ink-dim); }
.ticker .track .pill { display: inline-flex; align-items: center; gap: 12px; }
.ticker .track .pill::before { content: "◆"; color: var(--tl); }
@keyframes tick { from { transform: translateX(0); } to { transform: translateX(-50%); } }

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: 0.5; transform: scale(1.2); }
}
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .9s ease, transform .9s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; padding-top: 110px; }
  .book-scene { height: 500px; order: -1; }
  .book-stage { width: 240px; height: 340px; }
  .float-badge.b1, .float-badge.b2, .float-badge.b3 { display: none; }
  .stack-viz { grid-template-columns: 1fr; }
  .author { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; }
  .section-head .lede { justify-self: start; }
  .about .a1, .about .a2, .about .a3, .about .a4, .about .a5, .about .a6 { grid-column: span 12; }
  .feat-card { grid-column: span 6; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .audience { grid-template-columns: 1fr; }
  .prev-books { grid-template-columns: repeat(2, 1fr); }
  .nav .links { display: none; }
}
@media (max-width: 640px) {
  section { padding: 80px 20px; }
  .hero { padding: 110px 20px 60px; }
  .nav { padding: 14px 20px; }
  .feat-card { grid-column: span 12; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer { grid-template-columns: 1fr; text-align: center; }
  .footer .right { text-align: center; }
  .prev-books { grid-template-columns: 1fr; }
}