* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}

body {
  background-color: #f0f6ff;
  color: #333;
  line-height: 1.6;
}

/* 顶部导航栏 */
.header {
  height: 80px;
  width: 100%;
  position: fixed;
  top: 0;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  z-index: 1000;
  box-shadow: 0 2px 15px rgba(0, 105, 255, 0.15);
  border-bottom: 1px solid #e6f0ff;
}

/* 底部导航栏 */
.footer {
  height: 80px;
  width: 100%;
  position: fixed;
  bottom: 0;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 5%;
  z-index: 1000;
  box-shadow: 0 2px 15px rgba(0, 105, 255, 0.15);
  border-bottom: 1px solid #e6f0ff;
}

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

.logo img {
  height: 40px;
  margin-right: 12px;
}

.logo-text {
  font-size: 22px;
  font-weight: bold;
  background: linear-gradient(90deg, #0175ff 0%, #00d6e1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.download-btn {
  width: 160px;
  height: 50px;
  background: linear-gradient(90deg, #0175ff 0%, #00d6e1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: bold;
  border-radius: 30px;
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(1, 117, 255, 0.35);
  transition: all 0.3s ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(1, 117, 255, 0.45);
}

.download-btn img {
  height: 18px;
  margin-right: 10px;
}

/* 主要内容区域 */
.main-content {
  margin-top: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 50px 5%;
  background-color: #f7fafe;
  min-height: calc(100vh - 80px);
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.content-container {
  max-width: 1200px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 标题区域 */
.title-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.app-icon {
  height: 80px;
  margin-bottom: 20px;
}

.app-title {
  font-size: 48px;
  font-weight: 700;
  color: #002c5f;
  margin-bottom: 15px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}

.app-description {
  max-width: 700px;
  color: #4a6578;
  font-size: 18px;
  line-height: 1.7;
  margin-bottom: 30px;
}

/* 下载区域 */
.download-section {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.main-download-btn {
  width: 320px;
  height: 75px;
  background: linear-gradient(90deg, #0175ff 0%, #00d6e1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: bold;
  border-radius: 50px;
  color: white;
  cursor: pointer;
  margin: 25px 0;
  box-shadow: 0 8px 20px rgba(1, 117, 255, 0.4);
  transition: all 0.3s ease;
}

.main-download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 25px rgba(1, 117, 255, 0.5);
}

.main-download-btn img {
  height: 28px;
  margin-right: 12px;
}

.download-note {
  font-size: 14px;
  color: #6b88a1;
  text-align: center;
  max-width: 400px;
}

/* 图片展示区域 - 使用背景图片作为边框 */
.image-showcase {
  width: 100%;
  max-width: 1000px;
  display: flex;
  justify-content: center;
  position: relative;
  margin: 40px 0;
  padding: 40px;
  background: url("../image/bgimg.png") no-repeat center center;
  background-size: 100% 100%;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 45, 125, 0.1);
}

.app-screenshot {
  width: 85%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .header {
    padding: 0 20px;
  }

  .logo-text {
    font-size: 18px;
  }

  .app-title {
    font-size: 36px;
  }

  .app-description {
    font-size: 16px;
    padding: 0 15px;
  }

  .main-download-btn {
    width: 280px;
    height: 65px;
    font-size: 20px;
  }

  .image-showcase {
    margin: 30px 0;
    padding: 20px;
  }
}

/* 动画效果 */
@keyframes float {
  0% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-10px);
  }

  100% {
    transform: translateY(0px);
  }
}

.app-icon {
  animation: float 5s ease-in-out infinite;
}

.content_bg {
  width: 900px;
  height: 450px;
  position: relative;
  text-align: center;
  margin-top: 40px;
  margin-bottom: 150px;
}

.content_img1 {
  position: absolute;
  left: -42px;
  top: -45px;
  width: 109%;
}

.content_img2 {
  width: 775px;
  height: 500px;
}