:root {
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-text: #1c1917;
  --color-text-secondary: #57534e;
  --color-text-muted: #a8a29e;
  --color-accent: #292524;
  --color-accent-light: #44403c;
  --color-border: #e7e5e4;
  --color-border-light: #f5f5f4;
  --font-serif: 'Crimson Text', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --container-max: 1200px;
  --container-narrow: 720px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--color-accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s; }
a:hover { border-bottom-color: var(--color-accent); }

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

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 100;
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.site-title {
  display: flex; align-items: baseline; gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.25rem; font-weight: 600;
  border-bottom: none;
}
.site-title-cred {
  font-family: var(--font-sans);
  font-size: 0.75rem; font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.site-nav {
  display: flex; gap: var(--space-md); align-items: center;
}
.site-nav a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent; padding-bottom: 2px;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--color-text); border-bottom-color: var(--color-accent);
}
.nav-toggle {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--color-text); transition: 0.3s;
}

/* Main */
.main { min-height: calc(100vh - 64px - 300px); }

/* Hero */
.hero {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.hero .container { max-width: var(--container-narrow); }
.hero-tag {
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--color-text-muted); margin-bottom: var(--space-sm);
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600; line-height: 1.15;
  margin-bottom: var(--space-md);
}
.hero-lead {
  font-size: 1.125rem; color: var(--color-text-secondary);
  margin-bottom: var(--space-lg); max-width: 60ch;
}
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md);
  margin-top: var(--space-xl); padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}
.stat-number {
  font-family: var(--font-serif);
  font-size: 2rem; font-weight: 600;
  color: var(--color-accent);
}
.stat-label {
  font-size: 0.75rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted); margin-top: 0.25rem;
}

/* Sections */
.section {
  padding: var(--space-2xl) 0;
}
.section-header {
  max-width: var(--container-narrow); margin: 0 auto var(--space-xl);
  text-align: center;
}
.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: var(--space-sm);
}
.section-header p {
  color: var(--color-text-secondary); font-size: 1.0625rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-lg);
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem; font-weight: 600;
  margin-bottom: var(--space-xs);
}
.card-meta {
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted); margin-bottom: var(--space-sm);
}
.card p {
  font-size: 0.9375rem; color: var(--color-text-secondary);
  line-height: 1.6;
}
.card-link {
  display: inline-block; margin-top: var(--space-sm);
  font-size: 0.875rem; font-weight: 500;
}

/* Page */
.page {
  max-width: var(--container-narrow); margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}
.breadcrumb {
  font-size: 0.75rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted); margin-bottom: var(--space-lg);
}
.breadcrumb a { color: var(--color-text-muted); border-bottom: none; }
.breadcrumb a:hover { color: var(--color-text); }
.breadcrumb span { margin: 0 0.5rem; }
.page-header { margin-bottom: var(--space-xl); }
.page-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600; line-height: 1.2;
  margin-bottom: var(--space-sm);
}
.page-subtitle {
  font-size: 1.125rem; color: var(--color-text-secondary);
}
.page-content {
  font-size: 1.0625rem;
}
.page-content h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem; font-weight: 600;
  margin: var(--space-xl) 0 var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border-light);
}
.page-content h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem; font-weight: 600;
  margin: var(--space-lg) 0 var(--space-sm);
}
.page-content h4 {
  font-size: 1rem; font-weight: 600;
  margin: var(--space-md) 0 var(--space-xs);
  color: var(--color-text-secondary);
}
.page-content p { margin-bottom: var(--space-md); }
.page-content ul, .page-content ol {
  margin-bottom: var(--space-md); padding-left: var(--space-md);
}
.page-content li { margin-bottom: var(--space-xs); }
.page-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md); margin: var(--space-lg) 0;
  font-style: italic; color: var(--color-text-secondary);
}
.page-content table {
  width: 100%; border-collapse: collapse;
  margin: var(--space-md) 0; font-size: 0.9375rem;
}
.page-content th, .page-content td {
  text-align: left; padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
}
.page-content th {
  font-weight: 600; font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.page-content img {
  border-radius: 4px; margin: var(--space-md) 0;
}
.page-cta { margin-top: var(--space-xl); text-align: center; }

/* Buttons */
.btn {
  display: inline-block; padding: 0.75rem 1.5rem;
  font-size: 0.875rem; font-weight: 600;
  border-radius: 4px; border: 1px solid var(--color-accent);
  cursor: pointer; transition: all 0.2s;
}
.btn-primary {
  background: var(--color-accent); color: var(--color-surface);
}
.btn-primary:hover {
  background: var(--color-accent-light); border-color: var(--color-accent-light);
}
.btn-secondary {
  background: transparent; color: var(--color-accent);
}
.btn-secondary:hover { background: var(--color-border-light); }

/* Timeline */
.timeline { position: relative; margin: var(--space-lg) 0; }
.timeline::before {
  content: ''; position: absolute; left: 7px; top: 0; bottom: 0;
  width: 2px; background: var(--color-border);
}
.timeline-item {
  position: relative; padding-left: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.timeline-item::before {
  content: ''; position: absolute; left: 0; top: 6px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--color-surface);
  border: 3px solid var(--color-accent);
}
.timeline-date {
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted); margin-bottom: 0.25rem;
}
.timeline-item h4 { margin-bottom: 0.25rem; }
.timeline-item p { font-size: 0.9375rem; color: var(--color-text-secondary); }

/* Tags */
.tag {
  display: inline-block; padding: 0.25rem 0.5rem;
  font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  background: var(--color-border-light);
  border-radius: 3px; margin-right: 0.5rem; margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-md);
  margin-top: var(--space-2xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}
.footer-col h3, .footer-col h4 {
  font-family: var(--font-serif);
  font-size: 1rem; font-weight: 600;
  margin-bottom: var(--space-sm);
}
.footer-col p, .footer-col ul {
  font-size: 0.875rem; color: var(--color-text-secondary);
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 0.375rem; }
.footer-identifiers { margin-top: var(--space-sm); display: flex; gap: var(--space-sm); }
.footer-identifiers a { font-size: 0.75rem; font-weight: 600; border-bottom: none; }
.footer-bottom {
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--space-md);
  font-size: 0.75rem; color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none; position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column; padding: var(--space-md);
    gap: var(--space-sm);
  }
  .site-nav.open { display: flex; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .timeline::before { left: 5px; }
  .timeline-item::before { width: 12px; height: 12px; border-width: 2px; }
}


.hero-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.hero-photo img {
  width: 100%;
  max-width: 320px;
  border-radius: 4px;
  object-fit: cover;
  aspect-ratio: 3/4;
}
@media (max-width: 768px) {
  .hero-layout {
    grid-template-columns: 1fr;
  }
  .hero-photo {
    order: -1;
    text-align: center;
  }
  .hero-photo img {
    max-width: 240px;
    margin: 0 auto;
  }
}