:root {
  --bg-deep: #051315;
  --bg-mid: #0c2a2c;
  --ink: #eafff6;
  --ink-dim: #8fc9bb;
  --ink-faint: #4f7a70;
  --accent: #57e8b8;
  --accent-dim: #2f8c72;
  --warm: #e87d7d;
  --panel: rgba(6, 20, 22, 0.72);
  --panel-border: rgba(120, 220, 190, 0.18);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-deep);
  color: var(--ink);
  font: 15px/1.6 ui-monospace, "SF Mono", Consolas, monospace;
  overflow-x: hidden;
}

a { color: var(--accent); }

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 30%, var(--bg-mid) 0%, var(--bg-deep) 65%, #020808 100%);
}

#ambient {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px;
  max-width: 640px;
}

.wordmark {
  font-size: clamp(2.6rem, 8vw, 4.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--ink);
  text-shadow: 0 0 40px rgba(87, 232, 184, 0.35);
}

.tagline {
  color: var(--ink-dim);
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  margin: 14px 0 32px;
  text-wrap: balance;
}

.cta-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.12s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: #06232a;
  border-color: var(--accent);
}
.btn-primary:hover { background: #6ef0c6; }

.btn-secondary {
  background: rgba(87, 232, 184, 0.08);
  color: var(--accent);
  border-color: var(--panel-border);
}
.btn-secondary:hover { background: rgba(87, 232, 184, 0.16); }

section {
  max-width: 920px;
  margin: 0 auto;
  padding: 72px 24px;
}

.section-label {
  color: var(--accent-dim);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin: 0 0 20px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 20px;
}

.feature-card .glyph {
  font-size: 1.6rem;
  margin-bottom: 10px;
  display: block;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  color: var(--ink);
}

.feature-card p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.92rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.download-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 20px;
  text-align: left;
}

.download-card.disabled {
  opacity: 0.45;
}

.download-card .platform {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.download-card .meta {
  color: var(--ink-faint);
  font-size: 0.82rem;
  margin-bottom: 14px;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(232, 125, 125, 0.14);
  color: var(--warm);
  border: 1px solid rgba(232, 125, 125, 0.3);
}

footer {
  border-top: 1px solid var(--panel-border);
  padding: 32px 24px 48px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 0.85rem;
}

footer a { color: var(--ink-dim); }

@media (prefers-reduced-motion: reduce) {
  #ambient { display: none; }
}