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

:root {
  --teal: #2ee7d9;
  --teal-dark: #0fb4a0;
  --red: #e01818;
  --bg: #0b0f14;
  --text: #eaffff;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(0, 255, 230, 0.65);
}

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);
  background-image: url("data:image/svg+xml;utf8,\
<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 400' preserveAspectRatio='none'>\
  <defs><linearGradient id='g' x1='0' y1='0' x2='0' y2='1'>\
  <stop stop-color='%23e01818' offset='0'/><stop stop-color='%23160018' offset='1'/></linearGradient></defs>\
  <path d='M0,320 C200,360 400,280 600,320 C800,360 1000,260 1200,320 L1200,400 L0,400 Z' fill='url(%23g)' opacity='0.65'/>\
  <path d='M0,340 C200,380 400,300 600,340 C800,380 1000,300 1200,340 L1200,400 L0,400 Z' fill='url(%23g)' opacity='0.25'/>\
</svg>");
  background-repeat: no-repeat;
  background-position: left bottom;
  background-size: 100% 60%, 100% 60%;
  min-height: 100vh;
}

main {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}

.image-frame {
  width: 100%;
  max-width: 1100px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(0, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
}

footer {
  padding: 1rem;
  text-align: center;
  margin-top: 1rem;
}

.product-ad {
  display: inline-block;
  padding: 0.75rem 1rem;
  border-radius: 14px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(8, 40, 60, 0.6);
  border: 1px solid rgba(0, 255, 255, 0.75);
}

.product-ad h3 {
  font-size: 0.95rem;
  margin: 0 0 0.25rem;
  color: #a7fffb;
  letter-spacing: .2px;
}

.product-ad a {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1rem;
  border-radius: 999px;
  background: rgba(0, 255, 230, 0.28);
  color: #eaffff;
  border: 1px solid rgba(0, 255, 230, 0.85);
}
.product-ad a:hover { background: rgba(0, 255, 230, 0.42); }
.product-ad a:focus-visible { outline: 3px solid #00ffd0; outline-offset: 2px; }

a { color: var(--teal); text-decoration: none; outline: none; }
a:hover { text-decoration: underline; }

:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }

/* Responsive tweaks (mobile-first) */
@media (min-width: 600px) {
  main { padding-top: 3rem; }
  .image-frame { border-radius: 22px; }
}
@media (min-width: 900px) {
  footer { padding: 2rem 0; }
  .product-ad { padding: 0.9rem 1.2rem; }
}