* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  color: #333;
  line-height: 1.6;
}

.background-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("https://images.unsplash.com/photo-1604654894610-df63bc536371?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: -1;
}

.background-overlay::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(216, 180, 254, 0.7),
    rgba(249, 168, 212, 0.7)
  );
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏样式 */
header {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #d8b4fe, #f9a8d4);
  border-radius: 10px;
  margin-right: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 18px;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: #6d28d9;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 25px;
}

nav ul li a {
  text-decoration: none;
  color: #6d28d9;
  font-weight: 500;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #f9a8d4;
}

/* 主内容区样式 */
.hero {
  padding: 100px 0;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  color: #6d28d9;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 30px;
  color: #fff;
}

.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
  color: #6d28d9;
  font-size: 2.2rem;
}

.content-block {
  display: flex;
  align-items: center;
  margin-bottom: 60px;
}

.content-block.reverse {
  flex-direction: row-reverse;
}

.text-content {
  flex: 1;
  padding: 0 30px;
}

.text-content h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: #6d28d9;
}

.text-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #fff;
}

.image-content {
  flex: 1;
  display: flex;
  justify-content: center;
}

.app-screenshot {
  width: 100%;
  max-width: 300px;
  height: 700px;
  background: linear-gradient(135deg, #d8b4fe, #f9a8d4);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 1.2rem;
}

/* 页脚样式 */
footer {
  background: rgba(255, 255, 255, 0.9);
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-email {
  margin-bottom: 20px;
  font-size: 1.1rem;
  color: #6d28d9;
}

.copyright {
  color: #777;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
  }

  nav ul {
    margin-top: 15px;
  }

  nav ul li {
    margin: 0 10px;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .content-block,
  .content-block.reverse {
    flex-direction: column;
  }

  .text-content {
    padding: 0;
    margin-bottom: 30px;
  }

  .app-screenshot {
    max-width: 250px;
    height: 583px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .app-screenshot {
    max-width: 200px;
    height: 467px;
  }
}