:root {
  color-scheme: dark;
  --bg: #10281d;
  --panel: #163325;
  --line: rgba(230, 205, 124, .28);
  --text: #ead27d;
  --muted: rgba(234, 210, 125, .68);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
}

a { color: inherit; text-decoration: none; }

.album-shell {
  width: min(1220px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.album-head {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 54px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.site-mark {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 20px;
}

h1 {
  margin: 0;
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 500;
  letter-spacing: 0;
}

.back-link {
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.category-card {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--panel);
  border: 1px solid var(--line);
}

.category-card img,
.photo-grid img {
  width: 100%;
  display: block;
}

.category-card img {
  height: 100%;
  object-fit: cover;
}

.category-card span {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 6px 10px;
  background: rgba(16, 40, 29, .78);
  border: 1px solid var(--line);
}

.category-card small {
  color: var(--muted);
  font-size: .72em;
  margin-left: 6px;
}

.photo-grid {
  columns: 5 190px;
  column-gap: 14px;
}

.photo-grid a {
  display: block;
  margin: 0 0 14px;
  break-inside: avoid;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
}

@media (max-width: 640px) {
  .album-shell {
    width: min(100vw - 20px, 1220px);
    padding-top: 20px;
  }

  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .photo-grid {
    columns: 2;
    column-gap: 10px;
  }

  .photo-grid a {
    margin-bottom: 10px;
  }
}