body {
  background-color: rgba(235, 235, 235, 0.5);
  font-family: 'Noto Sans', helvetica, arial, sans-serif;
  font-weight: 300;
}

/* 禁止前台使用粗體（bold/strong） */
h1, h2, h3, h4, h5, h6,
b, strong,
.fw-bold,
.navbar-brand,
.card-title,
.carousel-caption h5 {
  font-weight: 300 !important;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 18px;
  text-align: left;
}

th, td {
  padding: 12px 15px;
  border: 1px solid #ddd;
}

th {
  background-color: #f4f4f4;
  font-weight: bold;
}

tbody tr:nth-of-type(even) {
  background-color: #f9f9f9;
}

th.center, td.center {
  text-align: center;
}

th.right, td.right {
  text-align: right;
}