/* 全局重置与基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", Arial, sans-serif;
}
:root {
  --primary: #ff69b4;
  --secondary: #9370db;
  --third: #1e90ff;
  --four: #32cd32;
  --light: #fff5f8;
  --dark: #333;
}
body {
  background: #fdfbfc;
  color: #333;
  line-height: 1.7;
}
a {
  text-decoration: none;
  color: var(--primary);
}
a:hover {
  opacity: 0.8;
}
img {
  max-width: 100%;
  border-radius: 8px;
}
.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 0;
}

/* 导航栏 */
.header {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 99;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 24px;
  font-weight: bold;
  color: white;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo i {
  font-size: 28px;
}
.menu a {
  color: white;
  margin-left: 24px;
  font-size: 16px;
  font-weight: 500;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--primary);
  color: white;
  border-radius: 50px;
  font-weight: bold;
  border: none;
  cursor: pointer;
  font-size: 16px;
  transition: 0.3s;
}
.btn:hover {
  background: #ff55aa;
  transform: translateY(-2px);
}
.btn-blue {
  background: var(--third);
}

/* 卡片 */
.card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 3px 15px rgba(0,0,0,0.05);
  margin-bottom: 20px;
}
.card h2 {
  color: var(--primary);
  margin-bottom: 12px;
}
.card p {
  color: #555;
  margin-bottom: 10px;
}

/* 首页banner */
.banner {
  padding: 60px 0;
  text-align: center;
  background: linear-gradient(45deg, #fff0f6, #f5f0ff);
  border-radius: 16px;
  margin: 20px 0;
}
.banner h1 {
  font-size: 38px;
  color: var(--dark);
  margin-bottom: 16px;
}
.banner p {
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto 30px;
}
.banner-img {
  max-width: 600px;
  margin: 0 auto;
}

/* 列表/内容布局 */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width:768px) {
  .grid {
    grid-template-columns: 2fr 1fr;
  }
}
.sidebar .card {
  position: sticky;
  top: 100px;
}

/* 下载页版本 */
.version-item {
  padding: 14px;
  border-left: 4px solid var(--third);
  background: #f7fbff;
  margin-bottom: 10px;
  border-radius: 6px;
}
.version-item h4 {
  color: var(--third);
}

/* 404页面 */
.page-404 {
  text-align: center;
  padding: 80px 20px;
}
.page-404 h1 {
  font-size: 80px;
  color: var(--primary);
}
.page-404 h2 {
  font-size: 30px;
  margin-bottom: 20px;
}

/* 底部 */
.footer {
  background: #2a2a2a;
  color: white;
  padding: 40px 0;
  margin-top: 60px;
  text-align: center;
}
.footer p {
  color: #ccc;
}