body {
  margin: 0;
  font-family: "Microsoft YaHei", Arial, sans-serif;
  background: #0a0a0a;
  color: #fff;
  overflow-x: hidden;
}

canvas#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: #0a0a0a;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
  text-align: center;
}

/* 发光标题 */
.glow-text {
  font-size: 2.5rem;
  color: #3cb4c9;
  text-shadow: 0 0 10px #3cb4c9, 0 0 20px #3cb4c9;
}

.sub-title {
  font-size: 1.1rem;
  color: #ccc;
  margin-top: 0.5rem;
}

.intro {
  margin: 2rem 0;
  font-size: 1.1rem;
  line-height: 1.8rem;
  color: #ddd;
}

.features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature h2 {
  color: #3cb4c9;
  margin-bottom: 0.5rem;
}

.feature p {
  color: #aaa;
  font-size: 0.95rem;
}

.buy {
  margin: 3rem 0;
}

.buy-btn {
  display: inline-block;
  background: #3cb4c9;
  color: #fff;
  text-decoration: none;
  padding: 0.8rem 2rem;
  border-radius: 30px;
  font-size: 1.2rem;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 0 15px rgba(60,180,201,0.6);
}

.buy-btn:hover {
  background: #2a90a0;
  box-shadow: 0 0 25px rgba(60,180,201,0.9);
}

footer {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: #555;
}

/* 淡入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeIn 1.2s ease forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}