:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --ink: #1a1d21;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.topbar h1 { margin: 0 12px 0 0; font-size: 20px; letter-spacing: .5px; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; flex: 1; }
.controls input[type="search"] {
  flex: 1;
  min-width: 180px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
}
.controls select {
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
  background: #fff;
}
.starredOnly { font-size: 13px; color: var(--muted); display: flex; gap: 4px; align-items: center; }
button {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: #dc2626; border-color: #fecaca; }
main { max-width: 960px; margin: 0 auto; padding: 16px 20px 60px; }
.count { color: var(--muted); font-size: 13px; margin: 4px 2px 12px; }
.cards { display: flex; flex-direction: column; gap: 12px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.card .title { margin: 0 0 6px; font-size: 16px; line-height: 1.45; }
.card .year { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.card .meta { font-size: 13.5px; color: #374151; line-height: 1.5; }
.card .meta em { font-style: italic; }
.card .tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 2px 10px;
}
.card .actions { margin-top: 10px; display: flex; gap: 8px; align-items: center; }
.card .actions a { font-size: 13px; color: var(--accent); text-decoration: none; }
.icon-btn { border: none; background: none; font-size: 16px; padding: 4px 6px; }
.icon-btn.starred { color: #f59e0b; }
.card .detail { margin-top: 10px; border-top: 1px dashed var(--line); padding-top: 10px; font-size: 13.5px; }
.card .detail h4 { margin: 8px 0 4px; font-size: 13px; color: var(--muted); }
.card .detail p { margin: 0 0 8px; white-space: pre-wrap; line-height: 1.6; }
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  overflow-y: auto;
  z-index: 50;
}
.modal[hidden] { display: none; }
.modal-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 640px;
}
.modal-card h2 { margin: 0 0 16px; font-size: 18px; }
.modal-card form label { display: block; font-size: 13px; margin-bottom: 12px; color: #374151; }
.modal-card form label small { color: var(--muted); font-weight: normal; }
.modal-card input, .modal-card textarea {
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
.modal-card .row { display: flex; gap: 10px; }
.modal-card .row label { flex: 1; }
.modal-card label.check { display: flex; gap: 8px; align-items: center; }
.modal-card label.check input { width: auto; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.empty { text-align: center; color: var(--muted); padding: 60px 0; }