body {
  font-family: Arial, sans-serif;
  background-color: #e6f0ff;
  color: #03396c;
  padding: 20px;
}

/* h2 local styles removed (统一) */

#filters {
  margin-bottom: 20px;
}

#filters select {
  padding: 5px 10px;
  margin-right: 10px;
  border: 1px solid #005b96;
  border-radius: 4px;
  background-color: #fff;
  color: #03396c;
  cursor: pointer;
}

#filters select:hover {
  background-color: #cce0ff;
}

canvas {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  display: block;
  margin: 0 auto;
}

/* widen analysis */
#analysisTable{ width: 98%; max-width: 1180px; margin: 0 auto; }
canvas{ max-width: 1180px; width: 98%; margin: 0 auto; display:block; }