* {
  box-sizing: border-box;
}
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
  min-height: 100vh;
  margin: 0;
  padding: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.container {
  width: 100%;
  max-width: 540px;
  text-align: center;
}
h1 {
  font-size: 32px;
  font-weight: 600;
  margin: 0 0 48px 0;
  letter-spacing: -0.5px;
}
.section-title {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.4;
  margin-bottom: 20px;
  font-weight: 500;
}
.links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
a {
  display: block;
  background: #1e293b;
  color: #e5e7eb;
  text-decoration: none;
  padding: 16px 24px;
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.2s;
}
a:hover {
  background: #334155;
  transform: translateY(-2px);
}
a:active {
  transform: translateY(0);
}
.icon {
  margin-right: 8px;
  opacity: 0.7;
}
.github-link {
  background: transparent;
  border: 1px solid #334155;
}
.github-link:hover {
  background: #1e293b;
  border-color: #475569;
}

@media (min-width: 650px) {
  body {
    padding: 24px;
  }
  .container {
    max-width: 620px;
  }
  h1 {
    font-size: 48px;
    margin-bottom: 64px;
  }
  .section-title {
    font-size: 15px;
    margin-bottom: 24px;
  }
  a {
    padding: 20px 32px;
    border-radius: 16px;
    font-size: 18px;
  }
  .links {
    gap: 16px;
    margin-bottom: 40px;
  }
}