:root {
  --bg: #faf9f6;
  --text: #2c2c2c;
  --text-light: #6b6b6b;
  --accent: #c44b2b;
  --accent-light: #f4e6e1;
  --blue: #2b6cc4;
  --blue-light: #e1eaf4;
  --green: #2b8c4b;
  --sim-bg: #f0eeeb;
  --sim-border: #d8d4cf;
  --code-bg: #f5f3f0;
  --max-width: 680px;
  --sim-height: 280px;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Source Serif 4', Georgia, serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

h1 {
  font-size: 2.1rem;
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

.subtitle {
  font-family: 'Source Sans 3', sans-serif;
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 3rem;
  font-weight: 400;
}

h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 3.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 1.1rem;
}

em { font-style: italic; }
strong { font-weight: 600; }

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  html { font-size: 16px; }
  .page { padding: 2rem 1rem 4rem; }
  h1 { font-size: 1.7rem; }
}