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

body {
  background: linear-gradient(135deg, #fff9e6 0%, #fff5d6 100%);
  color: #333;
  line-height: 1.6;
}

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

/* 导航栏 */
header {
  background-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #ff9a76;
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  text-decoration: none;
  color: #555;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #ff9a76;
}

.download-btn {
  background-color: #ff9a76;
  color: white;
  padding: 10px 20px;
  border-radius: 30px;
  font-weight: 600;
  transition: background-color 0.3s;
  margin: 0 auto;
}

.download-btn:hover {
  background-color: #ff8a62;
}

/* 英雄区域 */
.hero {
  display: flex;
  align-items: center;
  min-height: 80vh;
  padding: 60px 0;
}

.hero-content {
  flex: 1;
  padding-right: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 50px;
}

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

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: #333;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: #666;
}

.app-screenshot {
  width: 100%;
  max-width: 300px;
  height: 600px;
  background-color: #f0f0f0;
  border-radius: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 1.2rem;
}

/* 内容区域 */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
  color: #333;
}

.content-block {
  display: flex;
  align-items: center;
  margin-bottom: 80px;
}

.content-block:nth-child(even) {
  flex-direction: row-reverse;
}

.content-text {
  flex: 1;
  padding: 0 40px;
}

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

.content-text h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: #ff9a76;
}

.content-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
}

.image-placeholder {
  width: 100%;
  max-width: 300px;
  height: 600px;
  background-color: #f0f0f0;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 1.1rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 下载区域 */
.download-section {
  text-align: center;
  padding: 80px 0;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  margin: 40px 0;
}

.download-section h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #333;
}

.download-section p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: #666;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.app-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.app-store-btn,
.google-play-btn {
  display: inline-block;
  background-color: #333;
  color: white;
  padding: 15px 30px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s;
}

.app-store-btn:hover,
.google-play-btn:hover {
  background-color: #555;
}

/* 页脚 */
footer {
  background-color: rgba(0, 0, 0, 0.05);
  padding: 40px 0;
  text-align: center;
  margin-top: 60px;
}

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

.footer-links {
  display: flex;
  list-style: none;
  margin-bottom: 20px;
}

.footer-links li {
  margin: 0 15px;
}

.footer-links a {
  text-decoration: none;
  color: #666;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #ff9a76;
}

.contact-email {
  margin-bottom: 15px;
  color: #666;
}

.copyright {
  color: #999;
  font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    padding: 15px 0;
  }

  .nav-links {
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links li {
    margin: 5px 10px;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 40px 0;
  }

  .hero-content {
    padding-right: 0;
    margin-bottom: 40px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

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

  .content-block:nth-child(even) {
    flex-direction: column;
  }

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

  .section-title {
    font-size: 2rem;
  }

  .app-buttons {
    flex-direction: column;
    align-items: center;
  }

  .app-store-btn,
  .google-play-btn {
    width: 200px;
  }
}