:root {
  --bg: #0a1020;
  --glass: rgba(9,15,40,.72);
  --border: rgba(46,230,216,.42);
  --turq: #2ee6d8;
  --text: #e8fbff;
  --muted: #9bd7d8;
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto;
  color: var(--text);
  background-color: var(--bg);
  /* navy dots pattern (turquoise dots on navy) */
  background-image:
    radial-gradient(circle, rgba(46,230,216,.25) 1px, transparent 1px);
  background-position: 0 0;
  background-size: 16px 16px;
  min-height: 100vh;
  line-height: 1.4;
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6vh 1rem 3rem;
}

.image-frame {
  width: min(96vw, 720px);
  background: rgba(9,14,40,.68);
  border: 1px solid rgba(46,230,216,.42);
  border-radius: 16px;
  padding: 1rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.25);
  box-shadow: inset 0 0 8px rgba(46,230,216,.25);
}

footer {
  padding: 1.5rem;
  text-align: center;
  background: linear-gradient(to top, rgba(2,6,25,.95), rgba(2,6,25,.65) 60%, rgba(2,6,25,.0) 100%);
}

.product-ad {
  display: inline-block;
  padding: .75rem 1rem;
  border-radius: 999px;
  background: rgba(10,20,45,.75);
  border: 1px solid rgba(46,230,216,.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  margin-bottom: .75rem;
}

.product-ad h3 {
  font-size: .95rem;
  font-weight: 600;
  color: #aaf0ff;
  margin: 0 0 .35rem;
}

.product-ad a {
  text-decoration: none;
  display: inline-block;
  padding: .55rem .95rem;
  border-radius: 999px;
  font-weight: 700;
  color: #041018;
  background: linear-gradient(135deg, rgba(46,230,216,.95), rgba(46,230,216,.65));
  box-shadow: 0 6px 14px rgba(46,230,216,.6);
  transition: transform .2s ease;
}
.product-ad a:hover { transform: translateY(-1px); }
.product-ad a:focus-visible {
  outline: 3px solid var(--turq);
  outline-offset: 2px;
}

footer p {
  color: var(--muted);
  font-size: .92rem;
  margin: .25rem 0 0;
}

@media (min-width: 768px) {
  main { padding: 8vh 2rem 4rem; }
  .image-frame { padding: 1.25rem; }
  .product-ad { font-size: 1rem; }
}