* { box-sizing: border-box; }

:root {
  --bg: #0f1115;
  --panel: #171a21;
  --fg: #e6e8eb;
  --muted: #9aa4b2;
  --accent: #5b8cff;
  --border: #262b36;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(15, 17, 21, 0.9);
  backdrop-filter: blur(6px);
}

header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.2px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 14px;
}

nav a:hover { color: var(--fg); }

.hero {
  padding: 72px 0 40px;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 44px;
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  margin: 0;
}

section { padding: 48px 0; }

h2 { font-size: 24px; margin: 0 0 16px; }

.feature {
  padding: 48px 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.feature-img {
  width: 320px;
  max-width: 90%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

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

.card h3 {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 16px;
}

.card p { margin: 0; color: var(--muted); font-size: 14px; }

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 40px;
}

@media (max-width: 560px) {
  .hero h1 { font-size: 32px; }
  nav a { margin-left: 12px; }
}