/* Base tokens */
:root {
  --bg: #041409;
  --bg-2: #0b1410;
  --text: #e9ffe9;
  --muted: #95b59a;
  --accent: #2bd24b;
  --accent-2: #6afba3;
  --glass: rgba(14, 22, 14, 0.28);
  --glass-border: rgba(40, 255, 180, 0.40);
  --shadow: 0 6px 18px rgba(0,0,0,.25);
  --radius: 14px;
}

/* Section: Base & reset */
html, body { height: 100%; }
* { box-sizing: border-box; }
html { font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif; }
body {
  margin: 0;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100%;
  line-height: 1.5;
  /* Layered background: gradient + subtle scanlines + neon glow */
  background: 
    linear-gradient(135deg, rgba(4,9,4,.95) 0%, rgba(2,4,2,.95) 60%, rgba(4,9,4,.95) 100%),
    radial-gradient(circle at 20% -10%, rgba(0,255,120,.08), transparent 40%),
    repeating-linear-gradient(
      0deg,
      rgba(0,255,120,.04) 0,
      rgba(0,255,120,.04) 1px,
      transparent 1px,
      transparent 2px
    );
}
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  /* Moving vertical scanlines to evoke a code stream */
  background: repeating-linear-gradient(
    90deg,
    rgba(0,255,120,.03) 0,
    rgba(0,255,120,.03) 2px,
    transparent 2px,
    transparent 4px
  );
  animation: scroll-lines 60s linear infinite;
  mix-blend-mode: overlay;
}
@keyframes scroll-lines { to { transform: translateY(-1000px); } }
@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
}

/* Section: Layout utilities */
.container {
  width: 100%;
  max-width: clamp(720px, 86vw, 1100px);
  margin-inline: auto;
  padding: 0 1rem;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.card { border-radius: var(--radius); padding: 1rem; }

/* Section: Structure selectors (styling the required tags) */
html, body, header, nav, main, article, footer, aside {
  /* basic layout intent; visuals provided in glass panels below */
}
header, main, footer, aside {
  padding: 1rem;
}
nav a { color: var(--text); text-decoration: none; padding: .25rem .5rem; border-radius: 6px; }
nav a:hover, nav a:focus-visible { text-decoration: underline; outline: none; }

/* Section: Hero & content panels (glass/frosted look) */
header, main, footer, aside {
  background: rgba(10, 18, 10, 0.20);
  border: 1px solid rgba(0,255,170,0.35);
  border-radius: 14px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
@supports not (backdrop-filter: blur(12px)) {
  header, main, footer, aside { background: rgba(10, 18, 10, 0.42); }
}
header { text-align: center; padding: 1.25rem 1rem; }
header h1 { margin: .25rem 0 0.25rem; font-size: clamp(1.6rem, 1.1vw + 1rem, 3rem); line-height: 1.15; letter-spacing: .2px; color: var(--text); }
header .meta { color: var(--muted); font-size: clamp(0.9rem, 0.4vw + .8rem, 1rem); margin-top: .25rem; }
header nav { margin-top: .5rem; }

/* Section: Featured image frame styling (compat with .image-frame) */
.image-frame {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid rgba(0,255,170,.35);
  box-shadow: 0 6px 16px rgba(0,0,0,.25);
}
.image-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Fallback container for content alignment if .content is used */
.content {
  max-width: 74ch;
  margin: 0 auto;
  padding: 0.5rem 0 1rem;
  color: var(--text);
}

/* Section: Typography & link behavior */
h1, h2, h3 { margin: .75rem 0 .5rem; color: var(--text); }
p { margin: .5rem 0 1rem; color: #eafff1; }
a { color: var(--accent); text-decoration: none; }
a:focus-visible { outline: 3px solid rgba(0,255,170,.9); outline-offset: 2px; border-radius: 4px; }
a:hover { text-decoration: underline; }

/* Lists */
ul, li { margin: 0 0 0.75rem 1.25rem; padding: 0; }
li { line-height: 1.4; }

/* Section: Product ad block (glass panel) */
.product-ad {
  display: grid; place-items: center;
  padding: .75rem;
  margin: .75rem 0;
  border-radius: 12px;
  background: rgba(10, 18, 10, 0.28);
  border: 1px solid rgba(0,255,170,.38);
}
.product-ad a { display: block; width: 100%; padding: .75rem; border-radius: 8px; text-align: center; text-decoration: none; color: var(--text); }
.product-ad a:hover { background: rgba(0,255,170,.12); }

/* Section: Buttons, CTAs, and interactive controls */
.btn, button, .cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .75rem 1.15rem;
  border-radius: 999px;
  border: 1px solid rgba(0,255,170,.5);
  background: rgba(12,22,12,.28);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease;
}
.btn:hover, button:hover, .cta:hover { transform: translateY(-1px); background: rgba(12,22,12,.42); }
.btn:active, button:active, .cta:active { transform: translateY(0); }
.btn--outline {
  background: transparent;
  border: 1px solid rgba(0,255,170,.7);
}
.btn:focus-visible, .cta:focus-visible {
  outline: 3px solid rgba(0,255,170,.9);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  .btn, button, .cta { transition: none; transform: none; }
  body::before { animation: none; }
}

/* Section: Utility & small components */
.tag {
  display: inline-block;
  padding: .15em .5em;
  font-size: .75em;
  border-radius: 999px;
  background: rgba(0,255,170,.25);
  color: var(--text);
}
.ul, .ol { margin: .5rem 0; padding: 0; }

/* Section: Print styles (basic readability) */
@media print {
  body { background: #fff; color: #000; }
  a { color: #000; text-decoration: underline; }
  header, main, footer { background: transparent; border: none; box-shadow: none; }
}
```