* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #0d1117;
  color: #e6edf3;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 2rem;
  border-bottom: 1px solid #30363d;
  display: flex;
  align-items: center;
  gap: 1rem;
}

header .logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #58a6ff;
  text-decoration: none;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
}

.hero {
  max-width: 700px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #58a6ff, #a371f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: #8b949e;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

.btn-primary {
  background-color: #238636;
  color: #fff;
  border: 1px solid #2ea043;
}

.btn-secondary {
  background-color: transparent;
  color: #58a6ff;
  border: 1px solid #388bfd;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  max-width: 900px;
  width: 100%;
  margin: 4rem auto;
  padding: 0 2rem;
}

.feature-card {
  background-color: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 1.5rem;
  text-align: left;
}

.feature-card .icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: #e6edf3;
}

.feature-card p {
  font-size: 0.9rem;
  color: #8b949e;
  line-height: 1.5;
}

footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid #30363d;
  text-align: center;
  color: #8b949e;
  font-size: 0.9rem;
}

footer a {
  color: #58a6ff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}