:root {
  --color-primary: #1b2a41;
  --color-accent: #b08d57;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6f8;
  --color-text: #24292f;
  --color-text-muted: #5b6470;
  --max-width: 1100px;
  --radius: 6px;
  --font-base: "Georgia", "Times New Roman", serif;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: var(--font-base);
  color: var(--color-primary);
  line-height: 1.25;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  background: var(--color-bg);
  border-bottom: 1px solid #e5e7eb;
  z-index: 10;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  flex-wrap: wrap;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.logo {
  font-family: var(--font-base);
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--color-primary);
}

.lang-switch ul {
  list-style: none;
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
}

.lang-switch a {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border: 1px solid transparent;
}

.lang-switch a:hover,
.lang-switch a:focus {
  color: var(--color-primary);
  text-decoration: none;
  border-color: #e5e7eb;
}

.lang-switch a[aria-current="page"] {
  color: #fff;
  background: var(--color-primary);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  font-size: 0.95rem;
}

/* ===== Hero ===== */
.hero {
  padding: 5rem 0;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero-blurb {
  max-width: 640px;
  margin: 0 auto 2rem;
  color: var(--color-text-muted);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: #142033;
  text-decoration: none;
}

/* ===== Sections ===== */
.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 0;
}

.card {
  background: var(--color-bg);
  border: 1px solid #e5e7eb;
  border-radius: var(--radius);
  padding: 1.5rem;
}

.section-alt .card {
  background: var(--color-bg);
}

blockquote.card cite {
  display: block;
  margin-top: 0.75rem;
  color: var(--color-text-muted);
  font-style: normal;
  font-size: 0.9rem;
}

/* ===== Timeline ===== */
.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.timeline li {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
}

.timeline-date {
  display: inline-block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

/* ===== Contact ===== */
.contact-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* ===== Footer ===== */
.site-footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-top: 1px solid #e5e7eb;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .nav-wrap {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }
}