* {
  margin: 0;
  padding: 0;
}

body {
  background-color: #f1f2f3;
}

.container {
  box-sizing: border-box;
  max-width: 1640px;
  min-width: 1240px;
  width: 100%;
  margin: 25px auto;
  color: #333;
}

.container * {
  box-sizing: border-box;
}

header {
  margin-bottom: 25px;
  text-align: center;
}

header h1 {
  font-size: 2.1rem;
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
}

header p {
  font-size: 1rem;
  opacity: 0.9;
}

.search-group {
  position: relative;
  margin: 0 auto 25px;
  width: 800px;
  display: flex;
}

.search-group input[type="text"] {
  flex: 1;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 4px 0 0 4px;
  font-size: 16px;
  outline: none;
}

.search-group input[type="text"]:focus {
  border-color: #3498db;
}

.search-group .btn-search {
  padding: 12px 20px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s;
}

.search-group .btn-search:hover {
  background-color: #2980b9;
}

.search-group .clear {
  position: absolute;
  right: 110px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: #999;
  font-size: 18px;
}

.search-panel {
  width: 100%;
  margin-bottom: 10px;
  overflow-x: auto;
}

.search-panel table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
  margin-bottom: 15px;
  background: #fff;
}

.search-panel th,
.search-panel td {
  padding: 12px 8px;
  border: 1px solid #ddd;
}

.search-panel th {
  background-color: #fff;
  font-weight: bold;
}

.search-panel tr:nth-child(even) {
  background-color: #f9f9f9;
}

.search-panel tr.blue {
  background-color: #e6f2ff;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 5px;
}

.col {
  flex: 1;
  min-width: 600px;
}

.box {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 15px;
  margin-bottom: 15px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.box h3 {
  margin-top: 0;
  color: #2c3e50;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

.box table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.box td {
  padding: 8px 5px;
  border: none;
}

.box input[type="text"] ,.box  select{
  padding: 10px 15px;
  border: 1px solid #ddd;
  border-radius: 3px;
  text-align: center;
  font-size: 15px;
  min-width: 75px;
}
.box  select{
  padding: 9px 15px;
}

.box input[type="button"],
.box input[type="submit"] {
  padding: 10px 20px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  margin-right: 5px;
}

.box input[type="button"]:hover,
.box input[type="submit"]:hover {
  background-color: #2980b9;
}

.box input[readonly] {
  background-color: #f8f9fa;
}

.box input[type="radio"]{
  margin-left: 15px;
  padding-right: 8px;
}

.tool-doc {
  padding: 20px;
  background-color: #fff;
  border-radius: 5px;
  border: 1px solid #ddd;
}

.tool-doc h2 {
  font-size: 20px;
  margin-top: 0;
  color: #2c3e50;
}

.tool-doc p,.tool-doc  li{
  line-height: 1.6;
  margin-top: 10px;
}

.tool-doc ul{
  padding-left: 25px;
}

.notice {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #333;
  color: white;
  padding: 12px 24px;
  border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  display: none;
  z-index: 1000;
}

.features {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 20px;
  margin-bottom: 25px;
  flex-wrap: wrap;
}

.feature {
  flex: 1;
  background-color: #fff;
  padding: 15px;
  border-radius: 5px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.feature h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: #3498db;
}

.feature-icon {
  font-size: 24px;
  margin-right: 10px;
}