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

:root {
  --accent: #ffd54f;       /* bright yellow/gold for hacker vibe */
  --accent-dark: #e6bf2d;
  --green-ghost: rgba(0, 255, 120, 0.25);
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.25);
  --text: #e8f6a8;
  --text-soft: #cfe07a;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

html, body { height: 100%; }
html { font-size: 16px; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  /* Green radial gradient background + cyberpunk glow */
  background:
    radial-gradient(circle at 60% 0%, rgba(0,255,140,.25) 0%, rgba(0,0,0,0) 40%),
    radial-gradient(circle at 20% 80%, rgba(120,255,60,.15) 0%, rgba(0,0,0,0) 40%),
    linear-gradient(#041a0f 0%, #042a0e 60%, #05210f 100%);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header / Hero (frosted glass, cyberpunk headline) */
header {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 1.25rem 1rem;
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(6, 26, 14, 0.55);  /* frosted look */
  border-bottom: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

header h1 {
  font-family: var(--mono);
  font-weight: 700;
  margin: 0;
  color: var(--accent);
  letter-spacing: .04em;
  font-size: 1.6rem;
  text-align: center;
  text-shadow:
    0 0 6px rgba(255, 213, 0, .8),
    0 0 14px rgba(0,0,0,.6);
  /* subtle cyber glow */
  user-select: none;
}

/* Hero scaling for larger screens */
@media (min-width: 640px) {
  header { padding: 1.5rem 1rem; }
  header h1 { font-size: 2.4rem; }
}
@media (min-width: 1024px) {
  header { padding: 1.75rem 1rem; }
  header h1 { font-size: 3.2rem; }
}

/* Main content area (centered card feel) */
main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 1.25rem;
}

/* Frosted image frame/card */
.image-frame {
  width: 100%;
  max-width: 760px;
  border-radius: 16px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.25);
  padding: 1rem;
  margin: 0 auto;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.18);
}

/* Footer with prominent CTA-like ad */
footer {
  padding: 1.75rem 1rem 2rem;
  text-align: center;
  color: var(--text);
  background: linear-gradient(#041b0f 0%, #041b0f 60%, #031a0d 100%);
}

.product-ad {
  margin: 0 auto 1rem;
  padding: .75rem;
  max-width: 520px;
  border-radius: 12px;
  background: rgba(0,0,0,.25);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-align: left;
}

.product-ad h3 {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  color: var(--accent);
  font-family: inherit;
}

.product-ad a {
  display: inline-block;
  padding: .75rem 1.1rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  /* neon green-to-yellow gradient CTA for hacker vibe */
  background: linear-gradient(135deg, rgba(0,255,140,.95), rgba(255,213,0,.98));
  color: #062b0f;
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-ad a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(0,0,0,.4);
}
.product-ad a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
footer p {
  margin: 0.25rem 0 0;
  color: #a6e06b;
  font-family: inherit;
}

/* Accessibility helpers for keyboard users */
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}
```