:root {
  --bg: #141210;
  --bg2: #1e1b17;
  --card: #242019;
  --line: #38322a;
  --text: #f0e9dc;
  --muted: #a89e8c;
  --accent: #e0a458;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px;
  background: rgba(20, 18, 16, .92);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(8px);
}
.brand { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.topbar nav a { margin-left: 20px; color: var(--muted); font-size: 15px; }
.topbar nav a:hover { color: var(--accent); }

#app { max-width: 1200px; margin: 0 auto; padding: 24px 20px 60px; }
.loading, .empty { text-align: center; color: var(--muted); padding: 60px 0; }

.hero { text-align: center; padding: 56px 20px 40px; }
.hero h1 { font-size: 42px; letter-spacing: 4px; margin-bottom: 12px; }
.hero p { color: var(--muted); font-size: 17px; letter-spacing: 2px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease;
  display: block;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,.45); }
.cat-card { padding: 34px 20px; text-align: center; }
.cat-icon { font-size: 46px; margin-bottom: 14px; }
.card-body h3 { font-size: 19px; margin-bottom: 6px; letter-spacing: 2px; }
.card-body p { color: var(--muted); font-size: 13px; }

.cover {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #2c2620, #1a1714);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cover-ph { font-size: 40px; opacity: .35; }
.album-card .card-body { padding: 12px 16px; }
.album-card .card-body h3 { font-size: 15px; letter-spacing: 1px; }

.crumb { color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.crumb a { color: var(--accent); }
.page-title { font-size: 26px; margin-bottom: 20px; letter-spacing: 2px; }
.page-title small { color: var(--muted); font-size: 15px; font-weight: 400; }
.sec-title { font-size: 17px; color: var(--muted); margin: 26px 0 14px; letter-spacing: 2px; }

.photos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
}
.photo {
  aspect-ratio: 1;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg2);
  cursor: zoom-in;
}
.photo img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .2s; }
.photo:hover img { transform: scale(1.05); }

footer {
  text-align: center; color: var(--muted);
  font-size: 13px; padding: 26px;
  border-top: 1px solid var(--line);
}

/* 灯箱 */
#lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(8, 7, 6, .94);
  display: flex; align-items: center; justify-content: center;
}
#lightbox.hidden { display: none; }
#lb-img { max-width: 92vw; max-height: 86vh; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.6); }
.lb-close, .lb-prev, .lb-next {
  position: absolute; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15); color: #fff;
  width: 46px; height: 46px; border-radius: 50%;
  font-size: 22px; cursor: pointer;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255,255,255,.2); }
.lb-close { top: 20px; right: 24px; }
.lb-prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 18px; top: 50%; transform: translateY(-50%); }
.lb-caption {
  position: absolute; bottom: 22px; left: 0; right: 0;
  text-align: center; color: var(--muted); font-size: 14px;
}
.lb-caption span { margin: 0 12px; }
.hd-badge {
  background: var(--accent); color: #1a1408;
  font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 10px;
}
.hd-badge.hidden { display: none; }

@media (max-width: 640px) {
  .hero h1 { font-size: 30px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .photos { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
}