/* 全局基础样式 */
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background-color: #fff;
  color: #111;
}
a {
  text-decoration: none;
  color: inherit;
}
h1, h2, h5 {
  margin: 0;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 顶部下载区域 */
.section {
  padding: 60px 20px;
  background-color: #011A2B;
  color: #fff;
}
.section-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: 40px;
}
.text-section,
.image-section {
  flex: 1 1 45%;
}
.text-section h1 {
  font-size: 2.4em;
  margin-bottom: 20px;
}
.text-section ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 30px;
  font-size: 1em;
}
.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.buttons a {
  background-color: #6c63ff;
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.95em;
}

/* 特色功能区域 */
.features-section {
  background: #fff;
  color: #111;
  text-align: center;
  padding: 60px 20px;
}
.features-section h1 {
  font-size: 2em;
  margin-bottom: 40px;
}
.features-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}
.feature-card {
  flex: 1 1 300px;
  max-width: 300px;
  text-align: center;
}
.feature-card p {
  font-size: 14px;
  color: #555;
}
.feature-card a {
  display: inline-block;
  margin-top: 15px;
  border: 1px solid #6c63ff;
  padding: 8px 14px;
  border-radius: 4px;
  color: #6c63ff;
}

/* 为什么选择区域 */
.why-section {
  background: #f5f5f5;
  color: #111;
  padding: 60px 20px;
}
.why-block {
  max-width: 1200px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 60px;
}
.why-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
}
.why-item:nth-child(even) {
  flex-direction: row-reverse;
}
.why-text {
  flex: 1 1 45%;
}
.why-img {
  flex: 1 1 45%;
  text-align: center;
}
.why-text p {
  color: #333;
  margin: 10px 0 0 0;
}
.why-text a {
  display: inline-block;
  margin-top: 15px;
  background: #6c63ff;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  font-size: 0.95em;
}

/* 用户评价 */
.testimonial-section {
  padding: 60px 20px;
  background: #fff;
  color: #111;
}
.testimonial-title {
  text-align: center;
  font-size: 2em;
  font-weight: bold;
  margin-bottom: 40px;
}
.testimonial-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  max-width: 1200px;
  margin: auto;
}
.testimonial-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  max-width: 500px;
  flex: 1 1 45%;
  padding: 20px;
  display: flex;
  gap: 20px;
  align-items: center;
}
.testimonial-card img {
  border-radius: 50%;
  width: 100px;
  height: 100px;
}
.testimonial-info p {
  margin-top: 8px;
  color: #444;
}

/* CTA 底部区域 */
.cta-section {
  padding: 60px 20px;
  background: #001D2F;
  color: #fff;
  text-align: center;
}
.cta-section h1 {
  font-size: 2.2em;
  margin-bottom: 20px;
}
.cta-section p {
  margin-bottom: 20px;
  font-size: 1em;
  color: #ccc;
}
.cta-section a {
  padding: 12px 24px;
  border: 1px solid #fff;
  color: #fff;
  border-radius: 6px;
  display: inline-block;
}

/* Footer */
footer {
  padding: 20px 0;
  background: #111;
  color: #ccc;
  text-align: center;
  font-size: 14px;
}

/* 响应式样式 */
@media screen and (max-width: 768px) {
  .section-content {
    flex-direction: column;
    text-align: center;
  }
  .text-section, .image-section {
    flex: 1 1 100%;
    padding: 0;
  }
  .text-section ul {
    text-align: left;
    display: inline-block;
  }
  .buttons {
    justify-content: center;
  }

  .features-row, .testimonial-grid {
    flex-direction: column;
    align-items: center;
  }

  .why-item {
    flex-direction: column !important;
    text-align: center;
  }

  .testimonial-card {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .testimonial-card img {
    margin-bottom: 10px;
  }
}