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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: #222;
  background: #fff;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */

header {
  background: #1a3a5c;
  padding: 0.9rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.site-title:hover {
  color: #c8dff0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
}

nav a {
  color: #b8d4e8;
  text-decoration: none;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  font-size: 0.92rem;
  transition: background 0.15s, color 0.15s;
}

nav a:hover,
nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.15);
}

/* Banner */

.site-banner {
  background: #cccccc;
  border-bottom: 1px solid #b0b0b0;
  padding: 0.5rem 0;
}

.site-banner img {
  display: block;
  width: 60%;
  height: auto;
  margin: 0 auto;
}

/* Main content */

main {
  padding: 2.5rem 1.5rem 3rem;
  min-height: calc(100vh - 120px);
}

article h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: #1a3a5c;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #dce8f2;
}

article.home h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #1a3a5c;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid #dce8f2;
}

p {
  margin-bottom: 1rem;
}

p + p {
  margin-top: 0;
}

ul, ol {
  margin: 0.25rem 0 1rem 1.6rem;
}

li {
  margin-bottom: 0.4rem;
}

li p {
  margin-bottom: 0.25rem;
}

a {
  color: #1a5c9a;
  text-decoration: none;
}

a:hover {
  color: #0d3d6b;
  text-decoration: underline;
}

em {
  font-style: italic;
}

strong {
  font-weight: 600;
}

code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.88em;
  background: #f0f4f8;
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

/* Home page intro */

.home .intro {
  font-size: 1.1rem;
  line-height: 1.75;
  color: #333;
  margin-bottom: 1.5rem;
}

/* About page team table */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
}

td {
  padding: 0.55rem 0.75rem;
  vertical-align: top;
  border-bottom: 1px solid #eef2f6;
}

td:first-child {
  font-weight: 600;
  white-space: nowrap;
  width: 22%;
  color: #1a3a5c;
}

/* Footer */

footer {
  background: #f4f7fa;
  border-top: 1px solid #dce8f2;
  padding: 1rem 0;
  font-size: 0.84rem;
  color: #666;
  text-align: center;
}

footer a {
  color: #555;
}

/* Images */

article img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.25rem auto;
}

.image-row {
  display: flex;
  gap: 0.75rem;
  margin: 1.75rem 0 0.5rem;
}

.image-row img {
  flex: 1;
  width: 0;
  min-width: 0;
  height: auto;
  margin: 0;
}

/* Responsive */

@media (max-width: 640px) {
  header .container {
    flex-direction: column;
    align-items: flex-start;
  }

  nav a:first-child {
    padding-left: 0;
  }

  td:first-child {
    width: auto;
    white-space: normal;
  }
}