body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0b1220;
  color: #e5e7eb;
}
.header {
  background: #0e1628;
  border-bottom: 1px solid #1f2937;
  padding: 10px 20px;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo { font-weight: bold; font-size: 16px; }
.nav a {
  margin-left: 12px;
  /* 向下移动 20px */
       transform: translateY(20px); 
  color: #9ca3af;
  text-decoration: none;
  
  
  
}
.nav a:hover { color: #fff; }
.hero {
  text-align: center;
  padding: 60px 20px;
}
.hero h1 { font-size: 28px; margin-bottom: 10px; }
.hero p { color: #9ca3af; margin-bottom: 20px; }
.cta {
  display: inline-block;
  padding: 10px 20px;
  background: #25d366;
  color: #000;
  font-weight: bold;
  border-radius: 5px;
  text-decoration: none;
}
.cta:hover { background: #1ebe5d; }
.about, .table-section, .cta-section {
  padding: 40px 20px;
  max-width: 900px;
  margin: 0 auto;
}
.about h2, .table-section h2 { margin-bottom: 20px; }
.table-section table {
  width: 100%;
  border-collapse: collapse;
}
.table-section th, .table-section td {
  border: 1px solid #1f2937;
  padding: 12px;
  text-align: left;
}
.table-section th {
  background: #111827;
  color: #9ca3af;
}
.cta-section {
  text-align: center;
  border-top: 1px solid #1f2937;
}
.footer {
  text-align: center;
  padding: 20px;
  background: #0e1628;
  border-top: 1px solid #1f2937;
  font-size: 14px;
  color: #9ca3af;
}