:root {
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --text: #1A1A1A;
  --text-secondary: #555555;
  --accent: #2A5B84;
  --accent-hover: #1E4566;
  --border: rgba(0, 0, 0, 0.08);
  --shadow: rgba(0, 0, 0, 0.04);
  --radius: 8px;
  --maxw: 720px;
}

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

body {
  font-family: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 17px;
}

/* Layout */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3 {
  font-family: 'Source Serif 4', Georgia, serif;
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 { font-size: 40px; font-weight: 600; }
h2 { font-size: 26px; font-weight: 600; margin-top: 48px; }
h3 { font-size: 20px; font-weight: 600; }

p {
  margin: 0 0 16px;
  color: var(--text-secondary);
}

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

/* Hero */
.hero {
  padding: 80px 24px 64px;
}

.hero h1 {
  margin-bottom: 8px;
}

.hero .subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero p {
  font-size: 17px;
  max-width: var(--maxw);
}

/* Sections */
.section {
  padding: 48px 24px;
}

.section.alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* Project cards */
.projects {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 24px;
}

.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 2px 8px var(--shadow);
}

.project h3 {
  margin: 0 0 6px;
}

.project h3 a {
  color: var(--text);
}

.project p {
  margin: 0;
  font-size: 15px;
}

.project .label {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 8px;
}

/* Contact */
.contact-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.contact-links a {
  font-weight: 500;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* Focus & motion */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* Responsive */
@media (max-width: 600px) {
  h1 { font-size: 30px; }
  .hero { padding: 48px 24px 40px; }
  .hero .subtitle { font-size: 18px; }
}