:root {
  --bg: #070b14;
  --bg-elev: #0e1524;
  --bg-card: #121a2c;
  --navy: #0b1220;
  --yellow: #ffd700;
  --cyan: #3de7ff;
  --white: #f5f7fb;
  --muted: #9aa6bd;
  --border: rgba(61, 231, 255, 0.18);
  --glow: 0 0 24px rgba(61, 231, 255, 0.35);
  --radius: 16px;
  --ok: #7dffb0;
  --bad: #ff8f8f;
  --orange: #ff8a1f;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --num: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, Menlo, monospace;
  --max: 1100px;
}
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--white);
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(61, 231, 255, 0.12), transparent 60%),
              radial-gradient(900px 500px at -10% 20%, rgba(255, 215, 0, 0.08), transparent 55%),
              var(--bg);
}
a { color: var(--cyan); text-underline-offset: 3px; }
a:hover { color: var(--yellow); }
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--yellow);
  color: #111;
  padding: 0.6rem 1rem;
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus { left: 1rem; top: 1rem; }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 20, 0.85);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.03em;
  color: var(--white);
  text-decoration: none;
}
.eyebrow {
  margin: 2rem 0 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 700;
}
h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin: 0 0 0.5rem;
  line-height: 1.2;
}
.lede {
  color: var(--muted);
  font-size: 1.15rem;
  margin: 0 0 2rem;
}
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.build-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
}
.build-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow);
  border-color: var(--cyan);
}
.build-card h2 {
  font-size: 1.3rem;
  margin: 0 0 0.5rem;
}
.build-card h2 a {
  color: var(--white);
  text-decoration: none;
}
.build-card h2 a:hover {
  color: var(--cyan);
}
.build-card p {
  color: var(--muted);
  font-size: 0.95rem;
  flex-grow: 1;
  margin: 0 0 1rem;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.card-tag {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(61, 231, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--cyan);
}
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}