:root {
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #2563eb;
  --border: #e2e8f0;
  --tag-bg: #f1f5f9;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --width: 680px;
  --pad-x: 24px;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--width);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

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

a:hover {
  text-decoration: underline;
}

/* Header */

header {
  padding: 56px 0 0;
}

header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
}

.tagline {
  margin-top: 12px;
  font-size: 1.0625rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.5;
}

.meta {
  margin-top: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.meta .sep {
  margin: 0 8px;
  color: var(--border);
}

.meta a {
  color: var(--text-muted);
  font-weight: 500;
}

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

/* Sections */

section {
  margin-top: 64px;
}

section h2 {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* About */

#about p {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text);
}

/* Experience */

.job {
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}

.job:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.job-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.company {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.company-note {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-muted);
}

.company-note a {
  color: var(--text-muted);
}

.company-note a:hover {
  color: var(--accent);
}

.dates {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.roles {
  list-style: none;
  margin-top: 8px;
}

.roles li {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.role-dates {
  font-size: 0.8125rem;
  color: #94a3b8;
}

.highlights {
  list-style: none;
  margin-top: 16px;
}

.highlights li {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text);
  padding: 3px 0 3px 18px;
  position: relative;
}

.highlights li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--text-muted);
  font-weight: 300;
}

/* Skills */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.skill-group h3 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tags span {
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--text);
  padding: 3px 9px;
  border-radius: 3px;
}

/* Education */

.edu-list {
  list-style: none;
}

.edu-list li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.edu-list li:last-child {
  border-bottom: none;
}

.edu-school {
  font-size: 0.9375rem;
  font-weight: 600;
  min-width: 160px;
}

.edu-detail {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* Footer */

footer {
  margin-top: 64px;
  padding: 40px 0 56px;
  border-top: 1px solid var(--border);
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* Mobile */

@media (max-width: 640px) {
  header {
    padding-top: 36px;
  }

  header h1 {
    font-size: 1.75rem;
  }

  .tagline {
    font-size: 1rem;
  }

  section {
    margin-top: 48px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .job-header {
    flex-direction: column;
    gap: 2px;
  }

  .edu-school {
    min-width: unset;
  }

  .edu-list li {
    flex-direction: column;
    gap: 2px;
  }
}