html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, sans-serif;
  margin: 0;
  background: #f9fafb;
  color: #111;
  line-height: 1.6;
}

header {
  background: #1f2937;
  color: white;
  padding: 2rem 1.5rem;
  display: flex;
  justify-content: center;
}

header .inner {
  max-width: 1000px;
  width: 100%;
  text-align: center;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

header p {
  margin: 0;
  color: #d1d5db;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: #111827;
}

pre {
  background: #f3f4f6;
  padding: 1rem;
  border-left: 4px solid #ef4444;
  border-radius: 0.5rem;
  overflow-x: auto;
}

.image-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 1.5rem;
}

.image-wrapper img {
  border: 2px dashed #ef4444;
  max-width: 300px;
}

button {
  background: #ef4444;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: background 0.2s ease, box-shadow 0.2s ease;
  margin-top: 1rem;
}

button:hover {
  background: #dc2626;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}