/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

/* 顶部标题 */
header {
  text-align: center;
  padding: 60px 20px;
  background: #f9f9f9;
}
header h1 {
  font-size: 2.4rem;
  color: #2c3e50;
  margin-bottom: 12px;
}
header p {
  font-size: 1.1rem;
  color: #7f8c8d;
}

/* 单个产品区块 */
.product-section {
  position: relative;
  width: 100%;
  margin: 40px 0;
}
.product-section img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
.text-overlay {
  max-width: 1000px;
  margin: -30px auto 0;
  padding: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  text-align: center;
}
.text-overlay h2 {
  font-size: 1.6rem;
  margin-bottom: 10px;
  color: #2c3e50;
}
.text-overlay p {
  font-size: 1.05rem;
  color: #555;
  line-height: 1.7;
}

/* 联系我们区块 */
.contact-section {
  max-width: 800px;
  margin: 80px auto 60px;
  padding: 40px 20px;
  text-align: center;
  background: #f0f7ff;
  border-radius: 12px;
}
.contact-section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #2980b9;
}
.contact-section p {
  font-size: 1.1rem;
  margin: 10px 0;
}

/* 手机适配 */
@media (max-width: 768px) {
  header h1 { font-size: 1.8rem; }
  .text-overlay { margin-top: -20px; padding: 15px; }
  .text-overlay h2 { font-size: 1.3rem; }
  .text-overlay p { font-size: 1rem; }
}