body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #fff;
}
.main {
  background: url(./img/bankground.png);
  background-size: 100% auto;
  background-repeat: no-repeat;
}
.container {
  width: 1200px;
  margin: 0 auto;
  padding: 0px 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.3); /* 白色半透明 */
  backdrop-filter: blur(8px); /* 模糊半径 */
  -webkit-backdrop-filter: blur(8px); /* Safari 兼容 */
  padding: 10px 0px;
}

.logo {
  height: 40px;
  line-height: 40px;
}
nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  margin: 0;
}

nav li {
  margin-left: 20px;
  line-height: 40px;
}
a {
  text-decoration: none;
  color: #000;
}

.download-btn {
  background-color: #5555ff;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 20px;
  cursor: pointer;
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 50px;
}

.hero-text h1 {
  font-size: 56px;
  color: #333;
  margin: 0;
}

.hero_btn {
  width: 300px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 35px;
  background: #000;
  color: #fff;
  font-family: PingFang SC;
  font-size: 21px;
  font-style: normal;
  font-weight: 600;
  line-height: 150%;
  cursor: pointer;
  border: none;
  outline: none;
  margin-top: 40px;
}
.hero-image img {
  width: 500px;
  border-radius: 10px;
}

.features {
  display: flex;
  justify-content: space-between;
  margin-top: 50px;
}

.feature {
  text-align: center;
  display: flex;
  border-radius: 10px;
  border: 1px solid #fff;
  box-shadow: 1px 0 rgba(10, 18, 38, 0.06), 3.5px 10px 0 rgba(10, 18, 38, 0.06);
  position: relative;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 10px 10px 0px 10px;
}

.feature img {
  width: 150px;
  border-radius: 10px;
}

.feature h3 {
  margin-top: 10px;
  margin-right: 10px;
}

.feature:hover {
  transform: translateY(-5px);
}

.feature::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5); /* 半透明黑色 */
  opacity: 0; /* 默认透明 */
  transition: opacity 0.3s ease;
  border-radius: 10px;
}

/* 悬停时显示蒙层 */
.feature:hover::after {
  opacity: 1;
}

/* 下载按钮（默认隐藏） */
.feature-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10; /* 确保在蒙层上方 */
  padding: 10px 20px;
  background: #fff;
  color: black;
  border: none;
  border-radius: 25px;
  font-weight: bold;
  opacity: 0;
  transition: opacity 0.3s ease;
  border: 1px solid #009fde;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  width: 60%;
  vertical-align: middle;
  cursor: pointer;
}
.feature-btn img {
  width: 20px;
  height: 20px;
  margin-top: 2px;
}
/* 悬停时显示按钮 */
.feature:hover .feature-btn {
  opacity: 1;
}

.center_two {
  margin-top: 100px;
}
.title {
  font-size: 50px;
  font-weight: 600;
  margin-bottom: 40px;
  text-align: center;
}
.title span {
  color: #4048e4;
}

/* 步骤容器，采用弹性布局 */
.steps-container {
  display: flex;
  gap: 40px;
  justify-content: space-between;
  flex-wrap: wrap;
}

/* 单个步骤卡片样式 */
.step-card {
  width: 280px;
  background: linear-gradient(to bottom right, #e8f7ff, #f5f0ff);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.step-card:hover {
  transform: scale(1.05); /* 放大1.05倍 */
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04); /* 提升阴影效果 */
}

/* 步骤编号样式，模拟背景圈 */
.step-number {
  width: 40px;
  height: 40px;
  background-color: #4048e4;
  color: #fff;
  border-radius: 50%;
  line-height: 40px;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 20px;
}

/* 步骤图标容器，设置宽高让图片适配 */
.step-icon {
  width: 200px;
  height: 120px;
  margin-bottom: 16px;
}

.step-icon img {
  width: 100%;
  height: 100%;
}

/* 步骤标题样式 */
.step-title {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 12px;
  color: #333;
  margin: 0;
  padding: 0;
}

/* 步骤描述样式 */
.step-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #666;
}

.center_three {
  margin-top: 200px;
  margin-bottom: 200px;
}

.main-title {
  font-size: 50px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  /* 模拟标题渐变文字，若设计有渐变需求可补充 */
  /* background: linear-gradient(90deg, #333, #666);
      -webkit-background-clip: text;
      color: transparent; */
}

.main-title span {
  color: #4048e4;
}

.desc {
  text-align: center;
  font-size: 14px;
  color: #999;
  margin-bottom: 60px;
  line-height: 1.8;
}

/* 内容布局：左侧文本 + 右侧示例图 */
.content-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  height: 400px;
  margin-top: 150px;
  gap: 150px;
}

.text-col {
  flex: 1 1 400px;
  /* margin-right: 50px; */
  margin-bottom: 40px;
}

.img-col {
  flex: 1 1 500px;
  display: flex;
  justify-content: center;
  position: relative;
  height: 100%;
}

.sub-title {
  font-size: 35px;
  font-weight: 600;
  color: #4048e4;
  margin-bottom: 20px;
}

.text-desc {
  font-size: 18px;
  color: #666;
  margin-bottom: 30px;
  line-height: 1.8;
}

.notice {
  font-size: 12px;
  color: #999;
  margin-bottom: 40px;
  line-height: 1.6;
}

.btn {
  display: inline-block;
  background: linear-gradient(90deg, #6699ff, #4048e4);
  color: #fff;
  padding: 12px 75px;
  border-radius: 30px;
  text-decoration: none;
  font-size: 16px;
  transition: all 0.3s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(64, 72, 228, 0.3);
}

.example-img .original {
  width: 50%;
  height: auto;
  border-radius: 12px;
  position: absolute;
  top: 0;
  left: 0;
}
.after {
  width: 60%;
  height: auto;
  border-radius: 12px;
  position: absolute;
  top: 150px;
  left: 220px;
}
.example-img svg {
  position: absolute;
  top: 240px;
  left: 120px;
  animation: rotateFade 6s infinite;
}

/* 标签样式：原图、AI、处理后 */
.tag {
  position: absolute;
  padding: 10px 25px;
  border-radius: 20px;
  font-size: 12px;
  color: #fff;
  font-size: 0.875rem;
}

.origin-tag {
  position: absolute;
  top: -10px;
  left: -18px;
  padding: 5px 17px;
  background-color: rgba(45, 45, 51, 0.5);
  border-radius: 0.8rem;
  backdrop-filter: blur(10px);
  color: white;
  text-align: center;
  font-size: 0.875rem;
  transform: rotate(-25deg);
  z-index: 10;
}

.origin-tag span {
  display: inline-block;
  transform: skew(15deg);
}

.ai-tag {
  background-color: #4048e4;
  top: 40px;
  right: -10px;
}

.result-tag {
  background-color: #6699ff;
  bottom: 20px;
  z-index: 10;
  right: -30px;
  font-size: 12px;
  transform: rotate(-15deg);
  animation: pulseFade 7s infinite;
}
@keyframes pulseFade {
  0%,
  100% {
    transform: rotate(-15deg) scale(1);
    opacity: 1;
  }
  10%,
  30% {
    transform: rotate(-15deg) scale(1.1);
    opacity: 1;
  }
  20% {
    transform: rotate(-15deg) scale(0.9);
    opacity: 1;
  }
  40% {
    transform: rotate(-15deg) scale(1);
    opacity: 1;
  }
  50%,
  70% {
    transform: rotate(-15deg) scale(1);
    opacity: 0;
  }
  90% {
    transform: rotate(-15deg) scale(1.1);
    opacity: 0.8;
  }
  100% {
    transform: rotate(-15deg) scale(1);
    opacity: 1;
  }
}
@keyframes rotateFade {
  0%,
  50%,
  100% {
    opacity: 0;
    transform: translateY(-20px) rotate(0deg);
  }
  10%,
  40% {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
  }
  0% {
    opacity: 0;
    transform: translateY(-20px) rotate(0deg);
  }
  5% {
    opacity: 1;
    transform: translateY(0) rotate(30deg);
  }
  15% {
    transform: translateY(0) rotate(-5deg);
  }
  20% {
    transform: translateY(0) rotate(3deg);
  }
  25% {
    transform: translateY(0) rotate(-2deg);
  }
  30% {
    transform: translateY(0) rotate(1deg);
  }
  35%,
  40% {
    transform: translateY(0) rotate(0deg);
  }
  50%,
  80% {
    opacity: 0;
  }
}
/* 箭头装饰，可用实际小图标替换 */
.arrow {
  position: absolute;
  width: 40px;
  height: 40px;
  bottom: 120px;
  left: 50%;
  transform: translateX(-50%);
}

.banner {
  /* 让内容在不同屏幕适配，可按需调整 */
  width: 100%;
  margin: 0 auto;
  background-image: url(./img/bottom-bg.png);
  background-size: 100% 100%;
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding: 40px 0px;
}
.banner-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}
.banner-content {
  display: flex;
  flex-direction: column;
}

.banner .title {
  color: #000;
  font-family: Alibaba PuHuiTi;
  font-size: 42px;
  font-style: normal;
  font-weight: 700;
  margin: 0;
  padding: 20px 0px;
}

.banner .info {
  display: flex;
  color: #666;
  font-size: 20px;
}
.rating {
  margin-left: 40px;
}
.rating {
  display: flex;
  align-items: center;
}

.stars {
  color: #ffd700;
  /* 星星颜色，模拟评分样式 */
}

/* 下载按钮样式 */
.banner-btn {
  display: inline-block;
  padding: 10px 25px;
  background-color: #fff;
  border: 1px solid #ff55bb;
  border-radius: 25px;
  color: #000;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.banner-btn:hover {
  background-color: #ff55bb;
  color: #fff;
}

/* 响应式适配，小屏幕下排版调整 */
@media (max-width: 768px) {
  .banner {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .info {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }
}