:root {
  --bg: #05080f;
  --cyan: #3ecfef;
  --text: #e6eef8;
  --muted: #7a8ba3;
  --panel: rgba(8, 14, 24, 0.55);
  --border: rgba(62, 207, 239, 0.28);
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}

.vignette {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse at center, transparent 35%, rgba(0,0,0,0.72) 100%);
}

.scan {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 2;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(0,0,0,0.08) 3px,
    rgba(0,0,0,0.08) 4px
  );
  opacity: 0.35;
  mix-blend-mode: multiply;
}

.hud, .hero, .foot {
  position: relative;
  z-index: 3;
}

.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: linear-gradient(to bottom, rgba(5,8,15,0.75), transparent);
}

.brand { display: flex; align-items: center; gap: 0.7rem; }
.mark {
  color: var(--cyan);
  font-size: 1.35rem;
  text-shadow: 0 0 18px rgba(62,207,239,0.55);
}
.title {
  font-family: var(--mono);
  letter-spacing: 0.14em;
  font-weight: 600;
  font-size: 0.9rem;
}
.sub { font-size: 0.72rem; color: var(--muted); }

.pills { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.pill {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  color: var(--cyan);
  background: rgba(62,207,239,0.08);
}
.pill.dim { color: var(--muted); border-color: rgba(122,139,163,0.35); }

.hero {
  max-width: 720px;
  margin: 8vh 1.25rem 0;
  padding: 1.4rem 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}

.eyebrow {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.55rem, 4vw, 2.35rem);
  line-height: 1.15;
  font-weight: 600;
}

.lede {
  margin: 0 0 1.2rem;
  color: #b7c4d6;
  line-height: 1.55;
  font-size: 1rem;
}

.cta { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.65rem 1.1rem;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  background: rgba(0,0,0,0.35);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover, .btn:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(62,207,239,0.25);
  outline: none;
}
.btn.primary {
  background: rgba(62,207,239,0.16);
  color: #dff8ff;
  border-color: rgba(62,207,239,0.55);
}
.btn.ghost { color: var(--muted); }

.foot {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.85rem 1.25rem;
  font-size: 0.72rem;
  color: var(--muted);
  background: linear-gradient(to top, rgba(5,8,15,0.85), transparent);
}
.dim { opacity: 0.8; }

@media (max-width: 640px) {
  .hero { margin-top: 4vh; }
  h1 { font-size: 1.45rem; }
}