/* ======= 产品页面主结构 ======= */
.product-page.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a1a;
  line-height: 1.75;
}


/* ======= 标题区 ======= */
.product-header {
  text-align: center;
  margin-bottom: 40px;
}

.product-header h1 {
  font-size: 2.2rem;
  color: #002175;
  font-weight: 700;
  margin-bottom: 15px;
  line-height: 1.3;
}

.product-header .lead {
  font-size: 1.15rem;
  color: #444;
  max-width: 780px;
  margin: 0 auto;
}

/* ======= 正文内容 ======= */
.product-content h2 {
  color: #0a246a;
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  position: relative;
}

.product-content h2::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: #ff6229;
  margin-top: 8px;
  border-radius: 2px;
}

.product-content p {
  color: #333;
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  text-align: justify;
}

/* ======= 特性区 ======= */
.product-features {
  background: linear-gradient(180deg, #f5f8ff 0%, #eef3fb 100%);
  border: 1px solid #d8e2f2;
  border-radius: 12px;
  padding: 30px 40px;
  margin-top: 50px;
}

.product-features h2 {
  font-size: 1.4rem;
  color: #002175;
  margin-bottom: 15px;
}

.product-features ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 10px 30px;
}

.product-features li {
  position: relative;
  padding-left: 28px;
  color: #333;
  font-size: 1rem;
}

.product-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: #1e88e5;
  font-weight: 700;
}

/* ======= 参数表格 ======= */
.product-specs {
  margin-top: 50px;
  border: 1px solid #d9e3f2;
  border-radius: 10px;
  overflow: hidden;
}

.product-specs h2 {
  background: #002175;
  color: #fff;
  font-size: 1.3rem;
  padding: 14px 20px;
  margin: 0;
}

.product-specs table {
  width: 100%;
  border-collapse: collapse;
}

.product-specs th,
.product-specs td {
  padding: 12px 18px;
  border-bottom: 1px solid #e2e6ef;
}

.product-specs th {
  width: 35%;
  background: #f4f7fc;
  font-weight: 600;
  color: #0a1c5a;
  text-transform: capitalize;
}

.product-specs td {
  color: #333;
}

/* ======= 响应式 ======= */
@media (max-width: 768px) {
  .product-header h1 {
    font-size: 1.6rem;
  }
  .product-features {
    padding: 20px;
  }
  .product-specs h2 {
    font-size: 1.1rem;
  }
}