:root {
  --olive: #8fb34a;
  --olive-dark: #5b6f2d;
  --cyan: #2ff0ff;
  --cyan-dark: #0ac0c8;
  --bg: #07131d;
  --text: #e6fff5;
  --glass: rgba(255,255,255,.08);
  --shadow: 0 6px 18px rgba(0,0,0,.4);
}

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

html, body { height: 100%; padding: 0; margin: 0; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: var(--text);
  background: #07131d;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.4;
  position: relative;
}

/* Cyan waves background (soft, animated parallax) */
body::before {
  content: "";
  position: fixed;
  left: -20%;
  right: -20%;
  bottom: -20%;
  height: 60vh;
  background-image:
    url("data:image/svg+xml;utf8,\
<svg xmlns='http://www.w3.org/2000/svg' width='1200' height='600' viewBox='0 0 1200 600'>\
<path d='M0,420 C180,360 360,480 600,420 C840,360 1020,480 1200,420 L1200,600 L0,600Z' fill='rgba(0,255,255,.28)'/>\
<path d='M0,460 C300,420 550,520 900,460 C1120,420 1200,520 1200,520 L1200,600 L0,600Z' fill='rgba(0,200,180,.20)'/>\
</svg>");
  background-repeat: repeat-x;
  background-size: 1200px 600px;
  filter: saturate(1.2);
  opacity: .8;
  z-index: 0;
  animation: drift 16s linear infinite;
}
@keyframes drift {
  from { transform: translateX(0); }
  to { transform: translateX(-600px); }
}

main {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  padding: 5rem 1rem 2rem;
}

.image-frame {
  width: min(92vw, 720px);
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(140, 210, 170, .5);
  box-shadow: 0 10px 40px rgba(0,0,0,.5), inset 0 0 0 rgba(0,0,0,0);
  backdrop-filter: blur(8px) saturate(1.25);
}
.image-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  filter: saturate(1.05);
}

footer {
  padding: 1.75rem 1rem;
  text-align: center;
  color: #d8f9f0;
  background: linear-gradient(180deg, rgba(2,8,9,.6), rgba(2,8,9,.9) 70%);
  border-top: 1px solid rgba(0,0,0,.25);
}
.product-ad {
  display: inline-block;
  padding: .35rem;
  border-radius: 12px;
  background: rgba(0,0,0,.18);
  backdrop-filter: blur(4px);
}
.product-ad h3 { margin: 0 0 .3rem; font-size: 1rem; color: #c6ffd9; letter-spacing: .4px; }
.product-ad a { text-decoration: none; display: inline-block; }
.product-ad a p {
  margin: 0;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 700;
  color: #062;
  background: linear-gradient(135deg, #2af0e5 0%, #14b08d 100%);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
}
footer p { margin: .75rem 0 0; font-size: .85rem; color: #b8d7b8; }

/* Keyboard accessibility: clear focus ring and provide visible focus */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--olive);
  outline-offset: 3px;
}
a, button {
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

@media (min-width: 640px) {
  main { padding: 6rem 2rem 3rem; }
  .image-frame { width: min(70vw, 860px); border-radius: 18px; }
  footer { text-align: center; }
}
@media (min-width: 1024px) {
  main { padding: 8rem 4rem 4rem; }
  .image-frame { width: min(60vw, 1000px); }
  footer { text-align: left; padding-left: 4rem; padding-right: 4rem; }
}