body {
  margin: 0;
  font-family: 'Microsoft YaHei', sans-serif;
  background-color: #0f1116;
  color: #f5f5f5;
}

.main-header {
  background: #1e1f26;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 0 2px 5px rgba(0,0,0,0.4);
}

.logo {
  color: #f9d65c;
  font-size: 24px;
  font-weight: bold;
  text-shadow: 0 0 5px #c59d00;
}

.nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
}

.nav a {
  color: #ccc;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover {
  color: #f9d65c;
}

.hero {
  background: linear-gradient(90deg, #000000 0%, #1e1f26 100%);
  padding: 100px 20px;
  text-align: center;
  background-image: url('https://img.zcool.cn/community/01f6be5da0aa03a80121651899cd25.jpg');
  background-size: cover;
  background-position: center;
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 20px;
  text-shadow: 0 0 10px #000;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 40px 20px;
}

section {
  margin-bottom: 60px;
}

h2 {
  font-size: 26px;
  border-left: 6px solid #f9d65c;
  padding-left: 10px;
  color: #f9d65c;
  margin-bottom: 15px;
}

p {
  line-height: 1.8;
  font-size: 16px;
  color: #ddd;
}

.main-footer {
  text-align: center;
  padding: 20px;
  background: #1a1b20;
  color: #777;
  font-size: 14px;
}