body {
      margin: 0;
      font-family: "Microsoft YaHei", sans-serif;
      background: #f9f9f9;
      color: #333;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 40px 20px;
    }

    /* Header */
    .header {
      text-align: left;
      margin-bottom: 30px;
      margin-left:90px;
    }
    .header h2 {
      color: #048646;
      font-size: 38.7px;
      margin: 0;
      font-weight:700;
    }
    .header img{
      position: absolute;
      width: 405px;
      height: 45.12px;
      margin-top: -34.62px;
      background-size: 100% 100%;
    }
    .header p {
      font-size: 16px;
      color: #555;
      margin-top: 6px;
    }
    .header .underline {
      width: 90px;
      height: 3px;
      background: #f08c32;
      margin: 12px 0;
    }

    /* Category Tabs */
    .categories {
      display: flex;
      justify-content: space-between;
      background: #fff;
      padding: 10px 25px;
      border-radius: 12px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
      margin-bottom: 40px;
      overflow-x: auto;
      margin-left:90px;
      
    }
    .category {
      flex: 1;
      text-align: center;
      padding: 8px 10px;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      white-space: nowrap;
      font-size:18px;
    }
    .category img {
      width: 42px;
      height: 42px;
      margin-bottom: 10px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }
    .category.active {
      background: #048646;
      color: #fff;
      font-weight: bold;
    }

    /* Product Grid */
    .products {
      display: grid;
      grid-template-columns: 2fr 1fr;
      grid-template-rows: 1fr 1fr;
      gap: 20px;
      margin-left:90px;
    }
    .product {
      background: #fff;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
      width:606px;
      height:260px;
      margin-top:10px;
    }
    .product.big {
      grid-row: span 2;
      flex-direction: column;
      height:550px;
      margin-top:20px;
      max-width:490px;
    }
    .product a {
      display: inline-block;
      text-decoration: none;
      color: inherit;
    }
    .product img {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      transition: transform 0.3s ease;
    }
    .product img:hover {
      transform: scale(1.05);
    }
    .product h3 {
      margin-top: 12px;
      font-size: 18px;
      color: #333;
    }
    .product p {
      font-size: 14px;
      color: #666;
      margin-top: 5px;
    }