:root {
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --color-text: #24292e;
  --color-bg: #ffffff;
  --color-secondary: #586069;
  --color-accent: #0366d6;
  --color-rule: #e1e4e8;

  --content-width: 640px;
  --line-height: 1.6;
  --spacing: 1.5rem;
}

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

html {
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* === Layout === */

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

/* === Hero === */

.hero {
  margin-bottom: 3rem;
}

.hero__name {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.hero__tagline {
  font-size: 1.05rem;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.hero__links {
  font-size: 0.875rem;
}

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

.hero__links a:hover {
  text-decoration: underline;
}

.separator {
  color: var(--color-rule);
  margin: 0 0.4em;
}

.pdf-hint {
  font-size: 0.8em;
  color: var(--color-secondary);
}

/* === Content === */

.content {
  margin-bottom: 3rem;
}

.content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.content p {
  margin-bottom: var(--spacing);
}

.content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: #f6f8fa;
  padding: 0.15em 0.3em;
  border-radius: 3px;
}

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

.content a:hover {
  text-decoration: underline;
}

/* === Horizontal Rules === */

hr.rule,
.content hr {
  border: none;
  border-top: 1px solid var(--color-rule);
  margin: 2rem 0;
}

/* === Education === */

.education {
  font-size: 0.875rem;
  color: var(--color-secondary);
}

.education strong {
  color: var(--color-text);
  font-weight: 600;
}

/* === Footer === */

.footer {
  font-size: 0.8rem;
  color: var(--color-secondary);
  text-align: center;
}

.footer .rule {
  margin-bottom: var(--spacing);
}

.footer .separator {
  color: var(--color-rule);
  font-size: 0.8em;
}

/* === Responsive === */

@media (max-width: 480px) {
  .container {
    padding: 2.5rem 1rem;
  }

  .hero__name {
    font-size: 1.6rem;
  }

  .hero__links {
    line-height: 2;
  }
}