/* Global reset and base styles */
:root {
  --bg: #000000;
  --glass: rgba(255, 255, 255, 0.08);
  --border: rgba(0, 255, 255, 0.25);
  --text: #e6faff;
  --muted: rgba(230, 255, 255, 0.9);
  --neon: #00e6ff;
  --neon-dark: #0af1ff;
  --shadow: 0 12px 28px rgba(0, 255, 255, 0.25);
}

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

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

body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

/* Subtle animated neon backdrop for hacker-night vibe */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 230, 255, 0.12), transparent 40%),
    radial-gradient(circle at 80% 0%, rgba(0, 180, 255, 0.10), transparent 40%),
    linear-gradient(#000 0%, #000 60%);
  z-index: -1;
  pointer-events: none;
  filter: saturate(120%);
  animation: glow 8s infinite linear;
  mix-blend-mode: screen;
}
@keyframes glow {
  0%, 100% { filter: saturate(120%); transform: translateZ(0); }
  50% { filter: saturate(140%); transform: translateZ(0) scale(1.01); }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.55);
  border-bottom: 1px solid rgba(0, 255, 255, 0.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.brand {
  font-weight: 700;
  color: #e6fbff;
  letter-spacing: .4px;
}
.brand:focus-visible {
  outline: 3px solid var(--neon);
  outline-offset: 2px;
}

/* Main layout sections */
main { padding: 0; }

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
  padding: 28px 16px 40px;
}
.hero-content {
  padding: 24px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(0, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  max-width: 720px;
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.05;
  margin: 0 0 10px;
  color: #b8f7ff;
  text-shadow: 0 0 8px rgba(0, 230, 255, 0.8);
}
.subhead {
  color: rgba(230, 255, 255, 0.92);
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  margin: 6px 0 14px;
}
.cta {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 700;
  color: #001018;
  text-decoration: none;
  background: linear-gradient(135deg, rgba(0, 230, 255, 0.95), rgba(0, 120, 255, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 6px 18px rgba(0, 230, 255, 0.45);
}
.cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}
.cta:focus-visible {
  outline: 3px solid var(--neon);
  outline-offset: 2px;
}
.hero-media {
  display: grid;
  place-items: center;
  padding: 6px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(0, 255, 255, 0.25);
  min-height: 260px;
}
.hero-media img {
  width: 100%;
  height: auto;
  max-width: 640px;
  border-radius: 12px;
  display: block;
  filter: saturate(1.05);
  box-shadow: 0 0 28px rgba(0, 255, 255, 0.6);
}
@media (min-width: 768px) {
  .hero {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    padding: 40px 60px;
  }
  .hero-media { min-height: 320px; }
}
@media (min-width: 1024px) {
  .brand { font-size: 1.05rem; }
  .hero-content { padding: 36px; }
  .hero h1 { font-size: clamp(2.6rem, 4vw, 3.6rem); }
}

/* Features */
.features { padding: 28px 16px; }
.features h2 {
  font-size: 1.6rem;
  margin-bottom: 12px;
  color: #b9f0ff;
}
.grid { display: grid; gap: 16px; }
.features-grid { grid-template-columns: 1fr; }
.feature {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(0, 255, 255, 0.25);
  border-radius: 12px;
  padding: 16px;
}
.feature h3 { margin: 0 0 6px; color: #eafffb; }

/* Testimonials */
.testimonials { padding: 28px 16px; }
.testimonials h2 { font-size: 1.6rem; margin-bottom: 12px; color: #b9f0ff; }
.testimonials-list { list-style: none; display: grid; gap: 12px; grid-template-columns: 1fr; padding: 0; margin: 0; }
.testimonials-list li {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(0, 255, 255, 0.25);
  padding: 12px;
  border-radius: 10px;
}
blockquote { margin: 0; padding: 0; color: #eaffff; }
blockquote footer { color: #c7fbff; font-weight: 700; font-size: 0.95em; }

/* Footer / Ad bar */
.site-footer { padding: 14px 16px; background: rgba(0, 0, 0, 0.6); border-top: 1px solid rgba(255, 255, 255, 0.15); text-align: center; }
.ad-bar { color: #b9f0ff; }
.ad-bar a { color: #a9f0ff; text-decoration: none; font-weight: 700; }

/* Accessibility - keyboard navigation focus for links and interactive elements across theme colors */
a:focus-visible {
  outline: 3px solid var(--neon);
  outline-offset: 2px;
}
@media (min-width: 768px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .testimonials-list { grid-template-columns: repeat(2, 1fr); }
}
```