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

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  color: #333;
  line-height: 1.8;
  background: #f7f7f7;
}

a { color: #4169e1; text-decoration: none; }
a:hover { text-decoration: underline; }

.header-image {
  width: 100%;
  max-height: 280px;
  overflow: hidden;
}
.header-image img {
  width: 100%;
  height: auto;
  display: block;
}

header {
  background: #fff;
  border-bottom: 1px solid #ddd;
}

.site-title {
  text-align: center;
  padding: 30px 20px 5px;
  font-size: 2rem;
  font-weight: bold;
}
.site-title a { color: #333; }

.site-description {
  text-align: center;
  color: #777;
  font-style: italic;
  padding-bottom: 15px;
  font-size: 0.95rem;
}

nav {
  background: #444;
  padding: 0;
  text-align: center;
}
nav a {
  display: inline-block;
  color: #fff;
  padding: 12px 18px;
  font-size: 0.9rem;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  transition: background 0.2s;
}
nav a:hover, nav a.active {
  background: #666;
  text-decoration: none;
}

main {
  max-width: 780px;
  margin: 40px auto;
  padding: 40px;
  background: #fff;
  border: 1px solid #e0e0e0;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: #222;
}

p {
  margin-bottom: 1.2em;
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  margin: 20px 0;
}
.video-embed iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

footer {
  text-align: center;
  padding: 30px;
  color: #999;
  font-size: 0.85rem;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}

@media (max-width: 600px) {
  main { margin: 20px 10px; padding: 25px; }
  nav a { padding: 10px 12px; font-size: 0.8rem; }
  .site-title { font-size: 1.5rem; }
}