/* 汽水音乐官方主色：#1AE077 活力绿 辅助色：#121212 深灰 #fff 白色 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  background-color: #121212;
  color: #fff;
  line-height: 1.6;
}

/* 导航栏 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 5%;
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(18, 18, 18, 0.95);
  z-index: 999;
  border-bottom: 1px solid #222;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: bold;
  color: #1AE077;
  text-decoration: none;
}

.logo i {
  font-size: 28px;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  transition: 0.3s;
}

.nav-links a:hover, .nav-links a.active {
  color: #1AE077;
}

/* 主体容器 */
.container {
  max-width: 1200px;
  margin: 120px auto 50px;
  padding: 0 20px;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: #1AE077;
  color: #121212;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s;
  border: none;
  cursor: pointer;
}

.btn i {
  font-size: 18px;
}

.btn:hover {
  background: #15c468;
  transform: scale(1.05);
}

/* 产品图片 */
.product-img {
  width: 100%;
  max-width: 600px;
  border-radius: 20px;
  margin: 30px 0;
  box-shadow: 0 0 30px rgba(26, 224, 119, 0.2);
}

/* 首页banner */
.banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 60px;
}

.banner h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.banner p {
  font-size: 18px;
  color: #aaa;
  max-width: 700px;
}

/* 内容区块 */
.section {
  margin: 60px 0;
}

.section h2 {
  font-size: 28px;
  margin-bottom: 30px;
  color: #1AE077;
  text-align: center;
}

/* 文章卡片 */
.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.article-card {
  background: #1c1c1c;
  padding: 25px;
  border-radius: 15px;
  transition: 0.3s;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.article-card h3 {
  color: #1AE077;
  margin-bottom: 12px;
  font-size: 18px;
}

.article-card p {
  color: #ccc;
  font-size: 15px;
}

/* 版本更新 */
.update-list {
  list-style: none;
}

.update-item {
  background: #1c1c1c;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 15px;
  border-left: 4px solid #1AE077;
}

.update-item h4 {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.update-item span {
  color: #1AE077;
  font-size: 14px;
}

/* 404页面 */
.page-404 {
  text-align: center;
  padding: 100px 20px;
}

.page-404 h1 {
  font-size: 100px;
  color: #1AE077;
}

.page-404 h2 {
  font-size: 32px;
  margin: 20px 0;
}

.page-404 p {
  color: #aaa;
  margin-bottom: 30px;
}

/* 响应式 */
@media (max-width: 768px) {
  .banner h1 {
    font-size: 32px;
  }
  .article-list {
    grid-template-columns: 1fr;
  }
}