.manual-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  font-family: Arial, sans-serif;
  color: #333;
  background: #f8fafc;
  min-height: 100vh;
}
.manual-title {
  text-align: center;
  margin-bottom: 30px;
}
.manual-title h1 {
  font-size: 28px;
  margin: 0;
  color: #222;
}
.manual-title p {
  color: #666;
  margin-top: 6px;
  font-size: 15px;
}

.search-box {
  width: 100%;
  padding: 14px 20px;
  font-size: 15px;
  border: 1px solid #ddd;
  border-radius: 6px;
  box-sizing: border-box;
  margin-bottom: 25px;
  outline: none;
  background: #fff;
}
.search-box:focus {
  border-color: #005A9C;
}

.cat-nav {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
}
.cat-btn {
  padding: 9px 20px;
  background: #005A9C;
  color: #fff;
  border: 1px solid #005A9C;
  border-radius: 4px;
  font-size: 14px;
}

.fold-item {
  border: 1px solid #eee;
  border-radius: 6px;
  margin-bottom: 10px;
  background: #fff;
}
.fold-head {
  padding: 16px 22px;
  background: #f1f5f9;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.fold-body {
  padding: 20px 22px;
}

.manual-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.manual-table th,
.manual-table td {
  padding: 14px 10px;
  text-align: center;
  border-bottom: 1px solid #f0f2f5;
}
.manual-table th {
  background: #fafbfc;
}
.manual-table tr:hover {
  background: #f9fafb;
}

.download-btn {
  display: inline-block;
  padding: 7px 16px;
  background: #005A9C;
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  font-size: 14px;
}

.no-result {
  text-align: center;
  padding: 40px 0;
  color: #888;
  display: none;
  background: #fff;
  border-radius: 6px;
}
.back-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 44px;
  height: 44px;
  background: #005A9C;
  color: #fff;
  border-radius: 50%;
  text-align: center;
  line-height: 44px;
  cursor: pointer;
  display: none;
  z-index: 99;
}