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

html, body { height: 100%; }

html, body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto;
  color: #eaffea;
  background: radial-gradient(circle at 20% 0%, rgba(0,255,120,.15) 0, transparent 40%),
              radial-gradient(circle at 80% -10%, rgba(0,255,120,.12) 0, transparent 40%),
              #000;
  background-attachment: fixed;
}

header {
  padding: 2rem 1rem;
  text-align: center;
  position: relative;
  border-bottom: 1px solid rgba(60, 255, 140, .25);
  background: radial-gradient(circle at 50% 0%, rgba(0,255,120,.15), transparent 40%);
}
header h1 {
  margin: 0.25rem 0 0;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.05;
  color: #39ff14;
  text-shadow: 0 0 12px rgba(57,255,20,.75);
}
header .meta {
  margin-top: .25rem;
  font-size: .95rem;
  color: #a8ffbf;
  opacity: .95;
}

main { padding: 1rem; }

article {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem;
  border-radius: 14px;
  background: rgba(0,0,0,.42);
  border: 1px solid rgba(0,255,140,.28);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  color: #eaffea;
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
}
.featured-image { text-align: center; margin: 1rem 0; }
.featured-image img { width: 100%; height: auto; border-radius: 8px; display: block; }

p { margin: 1rem 0; color: #eaffea; line-height: 1.8; }

a {
  color: #6aff88;
  text-decoration: none;
  display: inline-block;
  padding: .4rem .8rem;
  border-radius: 6px;
  border: 1px solid rgba(0,255,140,.4);
  background: rgba(0,0,0,.25);
  transition: transform .2s ease, background .2s ease;
}
a:hover { background: rgba(0,0,0,.35); text-decoration: none; transform: translateY(-1px); }
a:focus { outline: 3px solid #00ff88; outline-offset: 2px; }

.product-ad {
  margin: 1rem auto;
  padding: .9rem;
  border-radius: 10px;
  background: rgba(0,0,0,.42);
  border: 1px solid rgba(0,255,140,.28);
  text-align: center;
}
.product-ad h3 { margin: 0 0 .5rem; color: #39ff14; }

.product-ad a {
  display: inline-block;
  padding: .5rem .9rem;
  border-radius: 6px;
  border: 1px solid rgba(0,255,140,.4);
  color: #eaffea;
  text-decoration: none;
  background: rgba(0,0,0,.25);
  transition: background .2s ease;
}
.product-ad a:hover { background: rgba(0,0,0,.35); }

footer {
  padding: 2rem 1rem;
  text-align: center;
  color: #9affb8;
  border-top: 1px solid rgba(60,255,140,.25);
  margin-top: 2rem;
}
footer p { margin: .25rem 0; }

@media (min-width: 700px) {
  article { padding: 2rem; }
  header { padding: 3rem 1rem; }
  footer { padding: 2.5rem 1rem; }
}