:root {
  --bg: #090b11;
  --panel: #0f1320;
  --line: #1f2535;
  --text: #f7f8fb;
  --muted: #9aa3b7;
  --brand: #20e3b2;
  --brand-2: #3b82f6;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 10%, #12213f 0%, var(--bg) 42%),
    var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at 50% 10%, black 10%, transparent 75%);
  pointer-events: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 6vw;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 11, 17, 0.72);
  backdrop-filter: blur(8px);
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
}

nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
}

.btn {
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 500;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid #2a3552;
}

.btn-solid {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #041016;
  box-shadow: 0 10px 30px rgba(32, 227, 178, 0.25);
}

.btn-ghost {
  border: 1px solid #344268;
  color: #c5cbe0;
}

main {
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding: 64px 0 84px;
}

.hero {
  padding-top: 28px;
}

.eyebrow {
  color: var(--brand);
  letter-spacing: 0.08em;
  font-size: 0.84rem;
}

h1 {
  margin: 10px 0 16px;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1.05;
}

.subtitle {
  width: min(760px, 100%);
  color: #c2c9db;
  font-size: 1.08rem;
  line-height: 1.75;
}

.cta {
  display: flex;
  gap: 14px;
  margin-top: 30px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 56px;
}

.card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(160deg, #0f1320, #0c0f19);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: #3f527f;
}

.card h3 {
  margin: 0 0 8px;
}

.card p {
  margin: 0 0 16px;
  color: #b3bcd1;
  line-height: 1.6;
}

.card span {
  color: var(--brand);
  font-size: 0.92rem;
}

.feature {
  margin-top: 62px;
  padding: 28px;
  border: 1px solid #2a3452;
  border-radius: 18px;
  background: rgba(10, 16, 28, 0.76);
}

.feature h2 {
  margin: 0 0 14px;
}

.feature ul {
  margin: 0;
  padding-left: 18px;
  color: #c6cee0;
  line-height: 1.8;
}

footer {
  margin: 40px auto 22px;
  width: min(1120px, 92vw);
  color: #95a0b6;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

@media (max-width: 960px) {
  nav {
    display: none;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .cta {
    flex-wrap: wrap;
  }
}