:root {
  --red: #b71c1c;
  --bg: #f3f0eb;
  --line: #ddd5c8;
  --text: #1f1a17;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(165deg, #f7f3ec, #ebe4d8 40%, #f0ece4);
  color: var(--text);
  min-height: 100vh;
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 22px;
  background: linear-gradient(90deg, #8b1515, #c62828);
  color: #fff;
}
.brand { font-weight: 700; letter-spacing: 0.04em; }
.panel.login {
  width: min(380px, 92vw);
  margin: 64px auto;
  padding: 28px;
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--line);
}
.panel.login label { display: block; margin: 12px 0; font-size: 14px; }
.panel.login input, .toolbar input, .toolbar select {
  width: 100%;
  margin-top: 6px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  background: #fff;
}
button, .tabs a {
  cursor: pointer;
  border: none;
  background: var(--red);
  color: #fff;
  padding: 8px 14px;
  text-decoration: none;
  font-size: 14px;
}
button.ghost { background: transparent; border: 1px solid #fff; color: #fff; }
.hint { color: #666; font-size: 12px; }
.hidden { display: none !important; }
.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 22px;
  align-items: center;
  background: rgba(255,255,255,0.7);
  border-bottom: 1px solid var(--line);
}
.tabs button { background: #6d4c41; }
.tabs button.active { background: var(--red); }
.tab { padding: 18px 22px; }
.toolbar { display: flex; gap: 8px; margin-bottom: 14px; max-width: 520px; }
.toolbar.wrap { flex-wrap: wrap; max-width: 100%; }
.toolbar.wrap > * { width: auto; min-width: 120px; flex: 0 0 auto; }
table { width: 100%; border-collapse: collapse; background: rgba(255,255,255,0.85); }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; font-size: 14px; }
th { background: #f0e8dc; }
td button { padding: 4px 8px; font-size: 12px; margin-right: 4px; }
td button.off { background: #757575; }