:root {
  --bg: #0f1117;
  --bg-soft: #171a23;
  --card: #1c2030;
  --card-hover: #232838;
  --border: #2a2f3e;
  --text: #e6e8ee;
  --text-dim: #9aa1b1;
  --accent: #ff2e4d;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 18px;
}

/* Header */
.site-header {
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #14182400, #14182480);
}
.site-header h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.5px;
}
.subtitle {
  margin: 6px 0 0;
  color: var(--text-dim);
  font-size: 14px;
}
.back {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
}
.back:hover { color: var(--text); }

/* Toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 22px 0 10px;
}
#search {
  flex: 1 1 240px;
  min-width: 200px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 15px;
  outline: none;
}
#search:focus { border-color: var(--accent); }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.15s ease;
}
.chip:hover { color: var(--text); }
.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.count {
  color: var(--text-dim);
  font-size: 13px;
  margin: 4px 0 14px;
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s ease, background 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  background: var(--card-hover);
}
.thumb {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  background: var(--bg-soft);
}
.card-body { padding: 14px 16px 16px; }
.tag {
  display: inline-block;
  font-size: 12px;
  color: #fff;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.card-body h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.4;
}
.meta { margin: 0; font-size: 13px; color: var(--text-dim); }
.date { margin: 6px 0 0; font-size: 12px; color: #6b7280; }

.empty { color: var(--text-dim); text-align: center; padding: 40px 0; }

/* Post detail */
.post { margin: 24px 0 50px; }
.post h1 { font-size: 24px; margin: 12px 0 16px; }
.post-meta {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.restored { color: #4ade80; }
.restored.off { color: #fbbf24; }
.post-imgs {
  display: grid;
  gap: 14px;
  margin: 18px 0;
}
.post-img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: block;
}

/* 多媒体附件区（图片/视频/PDF/音频/文件） */
.post-media {
  display: grid;
  gap: 16px;
  margin: 18px 0;
}
.post-media figure.m {
  margin: 0;
}
.post-media img,
.md-media {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: block;
  background: var(--bg-soft);
}
.post-media figure.m figcaption,
.post-content figcaption {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
}
.post-media .pdf iframe,
.md-embed iframe {
  width: 100%;
  height: 70vh;
  max-height: 720px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}
.md-embed { margin: 14px 0; }
.file-link {
  display: inline-block;
  margin: 6px 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}
.file-link:hover { border-color: var(--accent); }

.post-content { font-size: 16px; }
.post-content h1, .post-content h2, .post-content h3 {
  margin: 26px 0 10px;
}
.post-content p { margin: 12px 0; }
.post-content blockquote {
  margin: 14px 0;
  padding: 10px 16px;
  border-left: 3px solid var(--accent);
  background: var(--bg-soft);
  color: var(--text-dim);
  border-radius: 0 8px 8px 0;
}
.post-content ul, .post-content ol { padding-left: 22px; }
.post-content img { max-width: 100%; border-radius: 8px; }
.post-content a { color: #6ea8fe; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0 30px;
  color: var(--text-dim);
  font-size: 13px;
  text-align: center;
}