/* ===== Excel：浅色网格、绿表头 ===== */
html[data-theme="excel"] {
  --bg: #e8ebe6;
  --card: #ffffff;
  --border: #b0b8a8;
  --text: #1f2933;
  --muted: #5c6b5a;
  --accent: #217346;
  --up: #0d7a4f;
  --down: #c41e3a;
  --warn: #9a6700;
  color-scheme: light;
}
html[data-theme="excel"] body {
  margin-left: auto;
  margin-right: auto;
  background: #e8ebe6;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
html[data-theme="excel"] .cell,
html[data-theme="excel"] section {
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  border-color: #c5ccc0;
  background: #fff;
}
html[data-theme="excel"] table {
  border-collapse: collapse;
  border: 1px solid #a8b09e;
  min-width: 720px;
  font-size: 0.82rem;
}
html[data-theme="excel"] th,
html[data-theme="excel"] td {
  border: 1px solid #c5ccc0;
  padding: 0.28rem 0.3rem;
}
html[data-theme="excel"] th {
  background: #217346;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.72rem;
  position: sticky;
  top: 0;
  border-color: #1a5c38;
}
html[data-theme="excel"] tbody tr:nth-child(even) td {
  background: #f2f7f0;
}
html[data-theme="excel"] tbody tr:nth-child(odd) td {
  background: #ffffff;
}
html[data-theme="excel"] tfoot td {
  background: #eef4ec;
  border-top: 2px solid #217346;
  color: var(--muted);
}
html[data-theme="excel"] input {
  background: #fff;
  border: 1px solid #9aaa90;
  border-radius: 0;
  color: var(--text);
  min-height: 28px;
  padding: 0.25rem 0.3rem;
}
html[data-theme="excel"] input:focus {
  outline: 2px solid #217346;
  outline-offset: -1px;
}
html[data-theme="excel"] button {
  background: #f3f5f0;
  border-radius: 2px;
  border-color: #a8b09e;
  color: var(--text);
}
html[data-theme="excel"] button.primary {
  background: #217346;
  border-color: #1a5c38;
  color: #fff;
}
html[data-theme="excel"] button.danger {
  background: #fde8ea;
  border-color: #e8a0a8;
  color: #a01828;
}
html[data-theme="excel"] .theme-bar select {
  background: #fff;
  border-radius: 2px;
  border-color: #a8b09e;
  color: var(--text);
}
html[data-theme="excel"] .ro { color: #4a5a48; }
html[data-theme="excel"] footer code { color: #217346; }