html, body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  font-family: 'Nunito', Arial, sans-serif;
  background: #151b24;
  color: #f0f3fa;
}
.site-wrapper {
  max-width: 1200px;
  margin: 54px auto 60px auto;
  background: #202837;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(20,32,55,0.22);
  padding-bottom: 36px;
}
header {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 48px 16px 48px;
  background: #232941;
  border-radius: 16px 16px 0 0;
  box-shadow: 0 1.5px 18px #10182a50;
}
.site-title {
  text-align: center;
  font-size: 2.4em;
  color: #fff;
  font-weight: 900;
  letter-spacing: 0.01em;
  margin-bottom: 12px;
}
nav {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 22px 0 10px 0;
}
nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 48px;
  font-weight: 600;
  font-size: 1.15em;
}
nav li { display: flex; }
nav a {
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  border-radius: 2px;
  color: #c2e1ff;
  transition: color 0.2s, border-bottom 0.2s, background-color 0.2s;
}
nav a:hover, nav a:focus {
  color: #fff;
  border-bottom: 2px solid #285be7;
  background: #171e2c;
}
.gallery-content {
  background: #212a3c;
  border-radius: 16px;
  max-width: 1020px;
  margin: 56px auto 30px auto;
  box-shadow: 0 7px 32px #11182e70;
  padding: 44px 42px 44px 42px;
  color: #f1f6ff;
}
.gallery-content h1 {
  text-align: center;
  color: #8bbcff;
  font-weight: 900;
  font-size: 2.08em;
  margin-bottom: 12px;
  letter-spacing: 0.01em;
}
.gallery-intro {
  text-align: center;
  color: #cfe5ff;
  font-size: 1.13em;
  margin-bottom: 32px;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
  gap: 32px;
}
.gallery-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #293453;
  border-radius: 14px;
  box-shadow: 0 2px 24px #111b3e44;
  overflow: hidden;
  position: relative;
  text-decoration: none;
  transition: transform 0.12s, box-shadow 0.23s;
  border: 2px solid #25385d;
}
.gallery-item:hover, .gallery-item:focus {
  filter: brightness(1.13) saturate(1.19);
  box-shadow: 0 10px 32px #1c273966;
  transform: scale(1.025) translateY(-3px);
  border: 2px solid #3d84ff;
}
.gallery-item img {
  width: 100%;
  min-height: 160px;
  max-height: 250px;
  object-fit: cover;
  border-bottom: 1.5px solid #29367a;
  display: block;
  background: #2b3555;
}
.caption {
  padding: 15px 16px 18px 16px;
  font-size: 1.07em;
  text-align: center;
  color: #c6dfff;
}
@media (max-width: 900px) {
  .gallery-content {
    max-width: 99vw;
    padding: 18px 2vw 14px 2vw;
  }
  .gallery-grid {
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
  .caption { padding: 9px 5px 13px 5px; font-size: 0.97em; }
}