*,
*::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, Inter, Arial;
  color: #e8f6f0;
  background-color: #0a0a0a;
  /* Teal zigzag background (subtle, cyberpunk feel) */
  background-image:
    linear-gradient(0deg, rgba(0,0,0,.18), rgba(0,0,0,.18)),
    linear-gradient(135deg, rgba(11,158,135,.25) 25%, rgba(11,158,135,.25) 50%, rgba(11,158,135,.25) 75%, rgba(11,158,135,.25) 100%);
  background-size: 40px 40px, 40px 40px;
  background-position: 0 0, 0 0;
  min-height: 100vh;
  padding: 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main {
  display: grid;
  place-items: center;
  padding: 1rem;
}
.image-frame {
  width: min(92vw, 700px);
  border-radius: 16px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(8px) saturate(120%);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.15), 0 12px 28px rgba(0,0,0,.35);
}
.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  filter: saturate(110%);
  box-shadow: 0 6px 20px rgba(0,0,0,.4);
}
footer {
  margin-top: 1.75rem;
  display: grid;
  place-items: center;
}
.product-ad {
  display: grid;
  gap: 0.5rem;
  align-items: center;
  justify-items: center;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  background: rgba(14, 25, 15, 0.25);
  border: 1px solid rgba(141, 76, 32, 0.5);
  max-width: 420px;
  width: 100%;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12), 0 6px 20px rgba(0,0,0,.25);
}
.product-ad h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .5px;
  color: #eafff6;
  text-shadow: 0 0 6px rgba(0,255,240,.4);
}
.product-ad a { text-decoration: none; }
.product-ad a p {
  margin: 6px 0 0;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1bd5b0, #0b8f87);
  color: #041e18;
  font-weight: 800;
  letter-spacing: .4px;
  border: 1px solid rgba(255,255,255,.4);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
}
.product-ad a:hover { transform: translateY(-1px); }
.product-ad a:hover p { box-shadow: 0 8px 18px rgba(0,0,0,.3); }
.product-ad a:focus-visible {
  outline: 3px solid #6df0e6;
  outline-offset: 2px;
}
footer p {
  margin-top: .5rem;
  font-size: .9rem;
  color: rgba(234,235,234,.85);
}

/* Focus visibility for other interactive elements if any in future */
:focus-visible {
  outline: 3px solid #6df0e6;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .image-frame, .product-ad a p { transition: none; transform: none; }
}

/* Responsive tweaks */
@media (min-width: 768px) {
  body { padding: 2rem 2.5rem; }
  main { padding: 2rem; }
  .image-frame { width: min(60vw, 720px); padding: 1.25rem; }
  footer { padding: 0 2rem; }
}