:root {
  --bg: #05060a;
  --bg-alt: #10131a;
  --accent: #4fd1ff;
  --accent-soft: #2b7a9f;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --card-bg: #151822;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #111827 0, #020617 55%);
  color: var(--text);
}

.hero {
  padding: 80px 20px 60px;
  text-align: center;
}

.hero-inner {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}

.tagline {
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.section {
  padding: 40px 20px;
}

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

.section h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.section p {
  max-width: 800px;
  margin: 0.5rem auto;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

.card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 20px;
  border: 1px solid #1f2937;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.card p {
  margin-bottom: 0.75rem;
}

.card ul {
  padding-left: 18px;
  margin: 0 0 1rem;
  color: var(--muted);
}

.columns {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.columns h4 {
  margin-top: 0;
}

.columns ul {
  padding-left: 18px;
  color: var(--muted);
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95rem;
  cursor: pointer;
  background: transparent;
}

.btn.primary {
  background: var(--accent);
  color: #020617;
  border-color: var(--accent);
}

.btn.secondary {
  background: transparent;
}

.btn.small {
  font-size: 0.85rem;
  padding: 8px 14px;
}

.btn.disabled {
  opacity: 0.4;
  cursor: default;
}

.contact-form {
  max-width: 480px;
  margin: 1rem auto 0;
  display: grid;
  gap: 10px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  text-align: left;
}

.contact-form input {
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid #374151;
  background: #020617;
  color: var(--text);
}

.contact-form .note {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: left;
}

.footer {
  padding: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid #1f2937;
}