:root {
  --teal: #08c7bd;
  --cyan: #14b8ff;
  --purple: #6d35ff;
  --deep: #061a45;
  --navy: #07163b;
  --soft: #f7fbff;
  --text: #111827;
  --muted: #59647a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Arial, sans-serif;
  color: white;
  background:
    radial-gradient(circle at 20% 10%, rgba(8,199,189,0.9), transparent 30%),
    radial-gradient(circle at 82% 8%, rgba(109,53,255,0.85), transparent 34%),
    linear-gradient(145deg, #042a56 0%, #10116b 58%, #07163b 100%);
  min-height: 100vh;
}

main { overflow: hidden; }

.hero {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  padding: 52px 20px 34px;
  text-align: center;
}

.glow {
  position: absolute;
  width: 280px;
  height: 280px;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(255,255,255,0.75), rgba(255,255,255,0.18), transparent 70%);
  filter: blur(4px);
  z-index: 0;
}

.app-icon {
  position: relative;
  z-index: 1;
  width: 132px;
  height: 132px;
  border-radius: 32px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.35), 0 0 45px rgba(255,255,255,0.42);
  object-fit: cover;
  background: white;
}

.eyebrow {
  margin: 28px 0 12px;
  color: #66fff1;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1 {
  margin: 0 auto;
  max-width: 850px;
  font-size: clamp(2.35rem, 8vw, 5.8rem);
  line-height: .92;
  letter-spacing: -0.06em;
  font-weight: 900;
  text-shadow: 0 10px 30px rgba(0,0,0,.28);
}

.subhead {
  max-width: 730px;
  margin: 22px auto 0;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  line-height: 1.55;
  color: rgba(255,255,255,.86);
}

.store-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.store-button {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-width: 205px;
  padding: 13px 18px;
  border-radius: 18px;
  color: white;
  background: #050505;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.28rem;
  box-shadow: 0 16px 35px rgba(0,0,0,.25);
  border: 1px solid rgba(255,255,255,.18);
}

.store-button small {
  display: block;
  font-size: .67rem;
  font-weight: 600;
  letter-spacing: .03em;
  opacity: .86;
  line-height: 1;
  text-align: left;
}

.store-icon { font-size: 2rem; line-height: 1; }
.play-icon {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border-radius: 9px;
  background: linear-gradient(135deg, #00d084, #1a73e8, #ffcb05, #ff3d00);
  font-size: 1rem;
}

.features {
  margin: 10px auto 0;
  max-width: 1100px;
  padding: 0 20px 30px;
}

.features h2, .cta h2 {
  text-align: center;
  margin: 22px auto 22px;
  font-size: clamp(1.65rem, 4vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.card {
  background: rgba(3, 13, 42, .72);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 26px;
  padding: 24px 18px;
  min-height: 206px;
  box-shadow: 0 18px 38px rgba(0,0,0,.18);
  backdrop-filter: blur(16px);
}

.icon {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  border-radius: 19px;
  background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(209,255,251,.74));
  font-size: 2rem;
  margin-bottom: 16px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.55), 0 12px 26px rgba(0,0,0,.14);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.16rem;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -.02em;
}

.card p {
  margin: 0;
  color: #56fff1;
  line-height: 1.38;
  font-size: .98rem;
}

.cta {
  background: white;
  color: var(--deep);
  text-align: center;
  padding: 44px 20px 58px;
  border-radius: 44px 44px 0 0;
  margin-top: 22px;
  box-shadow: 0 -18px 50px rgba(255,255,255,.2);
}

.cta h2 { margin-top: 0; color: var(--deep); }
.cta p { color: var(--muted); font-size: 1.12rem; margin: 0; }
.cta .store-button { box-shadow: 0 14px 30px rgba(0,0,0,.18); }

footer {
  background: white;
  color: var(--muted);
  text-align: center;
  padding: 0 20px 34px;
  font-size: .94rem;
}

footer p { margin: 0 0 8px; }
.footer-links a { color: var(--deep); font-weight: 700; text-decoration: none; }
.footer-links span { margin: 0 8px; opacity: .55; }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .hero { padding-top: 38px; }
  .app-icon { width: 118px; height: 118px; border-radius: 28px; }
  .grid { grid-template-columns: 1fr; }
  .card {
    min-height: auto;
    display: grid;
    grid-template-columns: 72px 1fr;
    column-gap: 14px;
    align-items: center;
    padding: 18px;
  }
  .icon { margin: 0; }
  .card h3 { margin-bottom: 5px; }
  .store-button { width: 100%; max-width: 320px; justify-content: center; }
}