* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: #e8f7e0;
  background-color: #0b0f0a;
  /* gray dots pattern background */
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 20px 20px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  min-height: calc(100vh - 160px);
}
.image-frame {
  width: min(92vw, 900px);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(82, 110, 40, .6);
  background: rgba(0,0,0,.25);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.image-frame img {
  display: block;
  width: 100%;
  height: auto;
}
footer {
  text-align: center;
  padding: 1.6rem 1rem;
  color: #cbdcaa;
}
.product-ad {
  display: inline-block;
  padding: .6rem 1rem;
  border-radius: 999px;
  background: rgba(12, 16, 8, 0.66);
  border: 1px solid rgba(110, 130, 60, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  margin-bottom: .75rem;
}
.product-ad h3 {
  margin: 0 0 .4rem;
  font-size: .95rem;
  color: #eaffd9;
}
.product-ad a {
  text-decoration: none;
  display: inline-block;
  padding: .6rem 1.1rem;
  border-radius: 8px;
  background: linear-gradient(#5b7b16, #3e5e0b);
  color: #faffef;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.15);
  transition: transform .15s ease, background .2s ease;
}
.product-ad a:hover { transform: translateY(-1px); background: linear-gradient(#6d9120, #315e14); }
footer p { margin: .6rem 0 0; font-size: .9rem; color: #a9b98d; }

/* Focus states for accessibility */
a:focus-visible, button:focus-visible, [role="button"]:focus-visible {
  outline: 3px solid #a8f0a1;
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsive tweaks (mobile-first, then scale up) */
@media (min-width: 700px) {
  main { padding: 3rem 0; min-height: calc(100vh - 240px); }
  .image-frame { width: 70vw; max-width: 760px; }
  footer { padding: 2rem 0; }
  .product-ad h3 { font-size: 1rem; }
}