* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Microsoft YaHei, sans-serif;
}

body {
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
.header {
  text-align: center;
  padding: 20px 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100%25' height='100%25'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0%25' y1='0%25' x2='100%25' y2='100%25'%3E%3Cstop offset='0%25' stop-color='%231a73e8'/%3E%3Cstop offset='100%25' stop-color='%230d47a1'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect fill='url(%23g)' width='100%25' height='100%25'/%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  margin-bottom: 30px;
}

.logo {
  font-size: 28px;
  font-weight: 700;
  color: #e0f7ff;
  margin-bottom: 10px;
}

.slogan {
  color: #ffe8b8;
  font-size: 16px;
}
.slogan p {
  margin: 0;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 160px;
  margin-top: 20px;
  font-size: 16px;
}

.nav a {
  text-decoration: none;
  color: #fff;
}

.nav a:hover {
  color: #ffe8b8;
}

/* Section Title */
.section-title {
  font-size: 20px;
  font-weight: 700;
  color: #333;
  margin: 30px 0 20px;
  padding-left: 10px;
  border-left: 4px solid #1a73e8;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.product-grid.grid-image {
  grid-template-columns: repeat(3, 1fr);
}

/* Product Card */
.product-card {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s;
  border: 1px solid #eee;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: #1a73e8;
}

.product-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px dashed #ddd;
}

.title-wrapper {
  display: flex;
  align-items: center;
  flex: 1;
}

.product-image {
  height: 32px;
  width: auto;
  max-width: 150px;
}

.product-image.image-wp {
  height: 40px;
  max-width: 180px;
}

.product-title {
  font-size: 18px;
  font-weight: 700;
  color: #333;
}

.product-tag {
  background: #1a73e8;
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  flex-shrink: 0;
}

.description {
  color: #666;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 15px;
  flex: 1;
}

.features {
  font-size: 12px;
  color: #777;
  list-style-position: inside;
  margin-bottom: 15px;
}

.price {
  font-size: 22px;
  color: #d32f2f;
  font-weight: 700;
  margin: 10px 0;
}

.btn {
  display: block;
  width: 100%;
  padding: 9px 12px;
  background: #1a73e8;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  text-align: center;
  transition: background .3s;
}

.btn:hover {
  background: #0d47a1;
}

.btn-row {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

.btn-row .btn {
  flex: 1;
}

/* Icon Row */
.icon-row {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 12px;
  color: #555;
  cursor: pointer;
}

.icon-item:hover {
  color: #1a73e8;
}

/* Guarantee Row */
.guarantee-row {
  display: flex;
  justify-content: space-around;
  margin: 40px 0;
  text-align: center;
  color: #555;
  font-size: 14px;
}

.guarantee-item {
  flex: 1;
}

.guarantee-title {
  font-size: 24px;
  margin-bottom: 10px;
  color: #1a73e8;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  color: #999;
  font-size: 12px;
  border-top: 1px solid #eee;
  margin-top: 20px;
}

/* Responsive: Tablet */
@media (max-width: 768px) {
  .header {
    padding: 15px 10px;
  }
  .container {
    padding: 10px;
  }
  .logo {
    font-size: 20px;
    margin-bottom: 8px;
  }
  .slogan {
    font-size: 12px;
    line-height: 1.4;
    padding: 0 5px;
  }
  .nav {
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
    font-size: 14px;
  }
  .nav a {
    padding: 4px 8px;
  }
  .section-title {
    font-size: 16px;
  }
  .product-card {
    padding: 15px;
  }
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-grid.grid-image {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .product-image, .product-image.image-wp {
    max-width: 100%;
    height: auto;
  }
  .price {
    font-size: 18px;
  }
  .btn {
    font-size: 14px;
    padding: 10px;
  }
  .features {
    font-size: 11px;
  }
  .description {
    font-size: 12px;
  }
  .guarantee-row {
    flex-wrap: wrap;
    margin: 20px 0;
    gap: 15px;
  }
  .guarantee-item {
    flex: 0 0 calc(50% - 7.5px);
  }
  .guarantee-title {
    font-size: 18px;
    margin-bottom: 5px;
  }
  footer {
    font-size: 10px;
    padding: 15px;
  }
}

/* Responsive: Mobile */
@media (max-width: 480px) {
  .header {
    padding: 12px 8px;
    border-radius: 4px;
    margin-bottom: 15px;
  }
  .logo {
    font-size: 16px;
  }
  .slogan {
    font-size: 10px;
  }
  .container {
    padding: 5px;
  }
  .nav {
    gap: 6px;
    font-size: 11px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .nav a {
    padding: 2px 4px;
  }
  .section-title {
    font-size: 14px;
    margin: 20px 0 12px;
    padding-left: 8px;
  }
  .product-grid,
  .product-grid.grid-image {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .product-card {
    padding: 12px;
  }
  .product-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .description {
    font-size: 12px;
  }
  .features {
    font-size: 11px;
  }
  .price {
    font-size: 16px;
  }
  .btn {
    font-size: 14px;
    padding: 10px;
  }
  .btn-row {
    flex-direction: column;
    gap: 8px;
  }
  .icon-row {
    gap: 8px;
  }
  .icon-item {
    font-size: 11px;
    flex: 0 0 calc(50% - 4px);
  }
  .guarantee-row {
    flex-wrap: wrap;
    margin: 20px 0;
    gap: 10px;
  }
  .guarantee-item {
    flex: 0 0 calc(50% - 5px);
  }
  .guarantee-title {
    font-size: 15px;
    margin-bottom: 4px;
  }
  .guarantee-item div:last-child {
    font-size: 11px;
    line-height: 1.4;
  }
  .page-content {
    padding: 16px;
  }
  .page-content h1 {
    font-size: 18px;
  }
  .page-content h2 {
    font-size: 15px;
  }
  .page-content p {
    margin-bottom: 10px;
    font-size: 14px;
  }
  .page-content ul {
    margin-left: 16px;
  }
  .page-content img,
  .page-content table {
    max-width: 100%;
    height: auto;
  }
  .page-content * {
    overflow-wrap: break-word;
  }
  footer {
    font-size: 9px;
  }
}