:root {
  --bg: #0b0b12;
  --card: #16161f;
  --card-hi: #20202c;
  --stroke: #2e2e3e;
  --text: #f5f5fa;
  --dim: #9090a2;
  --accent-a: #7c5cff;
  --accent-b: #c94bff;
  --accent-c: #39d0ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.aurora-text {
  background: linear-gradient(90deg, var(--accent-a), var(--accent-b), var(--accent-c));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  text-decoration: none;
}

.brand .mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  flex-shrink: 0;
}

nav.site a {
  color: var(--dim);
  text-decoration: none;
  font-size: 13.5px;
  margin-left: 22px;
}
nav.site a:hover { color: var(--text); }

.hero {
  padding: 64px 0 40px;
  text-align: center;
}
.hero h1 {
  font-size: 42px;
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}
.hero p.sub {
  color: var(--dim);
  font-size: 17px;
  max-width: 560px;
  margin: 0 auto 30px;
  line-height: 1.5;
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--stroke);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(90deg, var(--accent-a), var(--accent-b));
  border: none;
  color: white;
}
.btn-primary:hover { opacity: 0.9; }
.btn-ghost {
  background: var(--card-hi);
  color: var(--text);
}
.btn-ghost:hover { background: #2a2a38; }

.card {
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin: 40px 0;
}
.grid .card h3 {
  margin: 0 0 6px;
  font-size: 15px;
}
.grid .card p {
  margin: 0;
  color: var(--dim);
  font-size: 13.5px;
  line-height: 1.5;
}

.chip {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--card-hi);
  color: var(--dim);
  border: 1px solid var(--stroke);
}
.chip.pro {
  background: linear-gradient(90deg, var(--accent-a), var(--accent-b));
  color: white;
  border: none;
}

footer.site {
  color: var(--dim);
  font-size: 12.5px;
  text-align: center;
  padding: 40px 0 60px;
}
footer.site a { text-decoration: none; color: var(--dim); }
footer.site a:hover { color: var(--text); }

code, .mono {
  font-family: "Cascadia Code", "Consolas", monospace;
}

@media (max-width: 520px) {
  .hero h1 { font-size: 32px; }
}