/* 基础样式 */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: "Arial", sans-serif;
      }

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

      /* 头部样式 */
      header {
        background-color: #0a3d62;
        color: white;
        padding: 40px 0;
        position: relative;
        overflow: hidden;
      }

      .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
      }

      .header-text {
        flex: 1;
        min-width: 300px;
        padding-right: 40px;
      }

      .header-text h1 {
        font-size: 2.5rem;
        margin-bottom: 20px;
        line-height: 1.2;
      }

      .header-text p {
        font-size: 1.1rem;
        margin-bottom: 30px;
        opacity: 0.9;
      }

      .features {
        margin-bottom: 30px;
      }

      .feature-item {
        display: flex;
        align-items: center;
        margin-bottom: 10px;
      }

      .feature-item svg {
        margin-right: 10px;
        fill: #3498db;
      }

      .header-buttons {
        display: flex;
        gap: 15px;
        flex-wrap: wrap;
      }

      .btn {
        padding: 12px 24px;
        border-radius: 4px;
        font-weight: bold;
        text-decoration: none;
        cursor: pointer;
        transition: all 0.3s ease;
        border: none;
        font-size: 1rem;
      }

      .btn-primary {
        background-color: white;
        color: #0a3d62;
      }

      .btn-secondary {
        background-color: #3498db;
        color: white;
        display: flex;
        align-items: center;
        gap: 8px;
      }

      .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      }

      .header-image {
        flex: 1;
        min-width: 300px;
        display: flex;
        justify-content: center;
      }

      .header-image img {
        max-width: 100%;
        height: auto;
        animation: float 4s ease-in-out infinite;
      }

      @keyframes float {
        0% {
          transform: translateY(0px);
        }
        50% {
          transform: translateY(-15px);
        }
        100% {
          transform: translateY(0px);
        }
      }

      /* 特点部分样式 */
      .features-section {
        padding: 80px 0;
        background-color: #f9f9f9;
      }

      .section-title {
        text-align: center;
        font-size: 2rem;
        color: #0a3d62;
        margin-bottom: 60px;
      }

      .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
      }

      .feature-card {
        background-color: white;
        padding: 30px;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        transition: transform 0.3s ease;
      }

      .feature-card:hover {
        transform: translateY(-5px);
      }

      .feature-card .icon {
        width: 50px;
        height: 50px;
        background-color: #eaf2f8;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
      }

      .feature-card h3 {
        color: #0a3d62;
        margin-bottom: 15px;
        font-size: 1.3rem;
      }

      .feature-card p {
        color: #666;
        line-height: 1.6;
      }

      /* 应用场景部分 */
      .applications-section {
        padding: 80px 0;
      }

      .minerals-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 20px;
        margin-bottom: 40px;
      }

      .mineral-item {
        text-align: center;
      }

      .mineral-item img {
        width: 100%;
        height: 100px;
        object-fit: cover;
        border-radius: 8px;
        margin-bottom: 10px;
        border: 1px solid #eee;
      }

      .mineral-item p {
        color: #333;
        font-weight: 500;
      }

      .industries {
        text-align: center;
        color: #666;
        margin-top: 40px;
        font-size: 1.1rem;
      }

      /* 视频部分 */
      .video-section {
        padding: 80px 0;
        background-color: #f9f9f9;
        text-align: center;
      }

      .video-container {
        position: relative;
        max-width: 800px;
        margin: 0 auto;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
      }

      .video-container img {
        width: 100%;
        height: auto;
        display: block;
      }

      .play-button {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 80px;
        height: 80px;
        background-color: rgba(255, 255, 255, 0.9);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s ease;
      }

      .play-button:hover {
        transform: translate(-50%, -50%) scale(1.1);
        background-color: white;
      }

      .play-button svg {
        width: 0;
        height: 0;
        border-style: solid;
        border-width: 15px 0 15px 25px;
        border-color: transparent transparent transparent #3498db;
        margin-left: 5px;
      }

      /* 响应式样式 */
      @media (max-width: 992px) {
        .header-text h1 {
          font-size: 2rem;
        }
      }

      @media (max-width: 768px) {
        .header-content {
          flex-direction: column;
        }

        .header-text {
          padding-right: 0;
          margin-bottom: 40px;
          text-align: center;
        }

        .features {
          display: inline-block;
          text-align: left;
          margin: 0 auto 30px;
        }

        .header-buttons {
          justify-content: center;
        }

        .section-title {
          font-size: 1.8rem;
        }
      }

      @media (max-width: 576px) {
        .header-text h1 {
          font-size: 1.8rem;
        }

        .btn {
          width: 100%;
          justify-content: center;
        }

        .minerals-grid {
          grid-template-columns: repeat(2, 1fr);
        }
      }
      .industries {
            text-align: center;
            color: #666;
            margin-top: 40px;
            font-size: 1.1rem;
        }

        /* 表格样式 */
        .specifications-section {
            padding: 80px 0;
            background-color: white;
        }

        .table-responsive {
            overflow-x: auto;
            margin-top: 30px;
        }

        .spec-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .spec-table th,
        .spec-table td {
            padding: 15px 20px;
            text-align: left;
            border-bottom: 1px solid #eee;
        }

        .spec-table th {
            background-color: #0a3d62;
            color: white;
            font-weight: bold;
        }

        .spec-table tr:hover {
            background-color: #f9f9f9;
        }