/* 重置 & 全局设置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.6;
  scroll-behavior: smooth;
  background: #f2f3f5;
}

.hero {
  position: relative;
  width: 100%;
  height: 60vh;
  min-height: 320px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  padding: 0 20px;
  text-align: center;
}

.hero-content {
  position: absolute;
  z-index: 10;
  text-align: center;
  width: 100%;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-logo {
  position: absolute;
  top: 20px;
  left: 20px;
  font-size: 1.6rem;
  font-weight: bold;
  color: #2c3e50;
  z-index: 10;
}

/*.hero-content h1 {
  display: none;  hide original h1, we'll use top-left logo instead
}*/

.hero-content h1 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  font-size: 3rem;
  font-weight: bold;
  color: #FF6A00; /* 橙色 */
  padding: 0 200px;
  box-sizing: border-box;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 140%;
  height: auto;
  min-height: 100%;
  pointer-events: none;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.85;
}

/* 主体内容区 */
main {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
}

section {
  margin-bottom: 40px;
}

section h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #2c3e50; /* 深色但不黑 */
}

section p {
  font-size: 1rem;
  color: #555;
}

/* 联系我们链接样式 */
.contact a {
  color: #3366cc; /* 一种强调色 */
  text-decoration: none;
  border-bottom: 1px dashed #3366cc;
  transition: color 0.3s;
}

.contact a:hover {
  color: #254a9e;
  border-bottom: 1px solid #254a9e;
}

/* 页脚 */
footer {
  text-align: center;
  padding: 20px 0;
  background-color: #ececec;
  color: #666;
  font-size: 0.9rem;
}

/* 响应式调整 */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  section h2 {
    font-size: 1.5rem;
  }
}

/* 新增 App 预览区块 */
.app-preview {
  text-align: left;
  margin-bottom: 40px;
}

.app-preview h2 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 1rem;
}


/* QR 图片蒙层 */
.qr-placeholder {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: 16px;
  background-color: #f0f0f3;
  background-size: cover;
  background-position: center;
  border: 1px solid #d0d0d5;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 半透明蒙层 */
.qr-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.6); /* 白色半透明 */
  z-index: 1;
}

/* 蒙层上的文字 */
.qr-placeholder span {
  position: relative;
  z-index: 2; /* 保证文字显示在蒙层上 */
  font-size: 1.5rem;
  color: #777;
  text-align: center;
  padding: 10px;
}

/* QR 容器布局 */
.qr-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 200px;
  position: relative; /* 用于蒙层定位 */
}

.qr-item p {
  margin-top: 10px;
  font-size: 1rem;
  color: #333;
}

/* 底部链接风格 */
footer a {
  color: #3366cc;
  text-decoration: none;
  transition: color 0.3s;
}

footer a:hover {
  color: #254a9e;
}


@media (max-width: 600px) {
  .qr-container {
    flex-direction: column;
    align-items: flex-start;
  }

  .qr-item {
    width: 100%;
    align-items: flex-start;
  }

  .qr-placeholder {
    margin-left: 0;
  }
}

/* 漂浮云朵动画 */
@keyframes floatCloud {
  0% { transform: translateX(0); }
  100% { transform: translateX(40px); }
}

/* 远山轻微视差动画 */
@keyframes mountainParallax {
  0% { transform: translateY(0); }
  100% { transform: translateY(12px); }
}

/* 英雄文字淡入动画 */
@keyframes fadeInHero {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

.hero-bg circle {
  animation: floatCloud 6s ease-in-out infinite alternate;
}

.hero-bg path:nth-of-type(2) {
  animation: mountainParallax 8s ease-in-out infinite alternate;
}

.hero-bg path:nth-of-type(3) {
  animation: mountainParallax 10s ease-in-out infinite alternate;
}

.hero-bg path:nth-of-type(4) {
  animation: mountainParallax 12s ease-in-out infinite alternate;
}