:root {
  --bg: #0f1115;
  --panel: #181b22;
  --alt: #14171d;
  --text: #f4f4f5;
  --muted: #b5b5c0;
  --accent: #ffffff;
  --border: #262a33;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; }

.container {
  max-width: 1100px;
  margin: auto;
  padding: 0 20px;
}

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

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.brand span {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
}

.nav a {
  margin-left: 18px;
  text-decoration: none;
}

.btn {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  text-decoration: none;
}

.primary {
  background: var(--accent);
  color: #000;
}

.secondary {
  background: transparent;
}

.hero {
  padding: 70px 0;
}

.hero-inner {
  display: grid;
  gap: 40px;
  grid-template-columns: 1.3fr 0.7fr;
}

.hero-card {
  background: var(--panel);
  padding: 24px;
  border-radius: var(--radius);
}

.section {
  padding: 70px 0;
}

.section.alt {
  background: var(--alt);
}

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background: var(--panel);
  padding: 24px;
  border-radius: var(--radius);
}

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

.contact-box {
  margin-top: 24px;
  background: var(--panel);
  padding: 24px;
  border-radius: var(--radius);
}

.footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
}