.hero-section {
            background: var(--gradient-science);
        }
   
    
         .hero-section::before{
   
 /* 波浪能量场 - 动态感 */
background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='surface' width='20' height='20' patternUnits='userSpaceOnUse'%3E%3Crect width='20' height='20' fill='none' stroke='%23ffffff' stroke-width='0.3' stroke-opacity='0.03'/%3E%3Ccircle cx='5' cy='5' r='1' fill='%23ffffff' fill-opacity='0.08'/%3E%3Ccircle cx='15' cy='5' r='1.5' fill='%23ffffff' fill-opacity='0.06'/%3E%3Ccircle cx='5' cy='15' r='2' fill='%23ffffff' fill-opacity='0.03'/%3E%3Ccircle cx='15' cy='15' r='1' fill='%23ffffff' fill-opacity='0.08'/%3E%3Cpath d='M10,0 L10,20' stroke='%23ffffff' stroke-width='0.2' stroke-opacity='0.06'/%3E%3Cpath d='M0,10 L20,10' stroke='%23ffffff' stroke-width='0.2' stroke-opacity='0.06'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='80' height='80' fill='url(%23surface)'/%3E%3C/svg%3E");
}
 
   
  
 .product-section {
            padding: 60px 0;
            background-color: #f8f9fa;
        }
        
        .product-card {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
            height: 300px; /* 固定高度 */
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            background: #fff;
        }
        
        .product-card:hover {
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
            transform: translateY(-5px);
        }
        
        .product-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .product-card:hover .product-image {
            transform: scale(1.1);
        }
        
        .product-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(
                to bottom, 
                rgba(0, 100, 180, 0.85) 0%, 
                rgba(0, 100, 180, 0.7) 50%, 
                rgba(0, 100, 180, 0.85) 100%
            );
            color: white;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 20px;
            opacity: 0.85;
            transition: all 0.4s ease;
        }
        .product-overlay p{
              overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
        }
        .product-card:hover .product-overlay {
            opacity: 0.95;
            background: linear-gradient(
                to bottom, 
                rgba(0, 80, 160, 0.95) 0%, 
                rgba(0, 80, 160, 0.85) 50%, 
                rgba(0, 80, 160, 0.95) 100%
            );
        }
        
        .product-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 15px;
            text-align: center;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        
        .learn-more-btn {
            background: rgba(255, 255, 255, 0.2);
            border: 2px solid rgba(255, 255, 255, 0.8);
            color: white;
            padding: 8px 25px;
            border-radius: 25px;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            backdrop-filter: blur(5px);
            margin-top: 15px;
        }
        
        .learn-more-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            border-color: white;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
        }
        
      
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .product-card {
                height: 250px;
            }
            
            .product-title {
                font-size: 1.3rem;
            }
        }
        
        @media (max-width: 576px) {
            .product-card {
                height: 220px;
            }
            
            .product-title {
                font-size: 1.2rem;
            }
            
            .learn-more-btn {
                padding: 6px 20px;
                font-size: 0.9rem;
            }
        }

        /* 抗菌防霉页面特有样式 */
.antibacterial-mechanism {
    margin: 20px 0;
}

.mechanism-step {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #28a745;
}

.step-number {
    width: 40px;
    height: 40px;
    background: #28a745;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 15px;
    flex-shrink: 0;
}

/* 抛光材料页面特有样式 */
.precision-showcase {
    margin: 30px 0;
}

.surface-comparison {
    padding: 20px;
}

.surface-item {
    margin-bottom: 25px;
}

.roughness-bar {
    height: 20px;
    background: #e9ecef;
    border-radius: 10px;
    margin: 10px 0;
    position: relative;
    overflow: hidden;
}

.roughness-level {
    border-radius: 10px;
    transition: width 1s ease;
}

/* 导电材料页面特有样式 */
.conductivity-visual {
    position: relative;
    padding: 20px 0;
}

.conductivity-stage {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    position: relative;
}

.conductivity-stage:not(:last-child):after {
    content: '';
    position: absolute;
    left: 20px;
    bottom: -15px;
    width: 2px;
    height: 15px;
    background: #dee2e6;
}

.visual-box {
    width: 100px;
    height: 60px;
    background: linear-gradient(45deg, #f8f9fa, #e9ecef);
    border-radius: 8px;
    margin-top: 10px;
    border: 2px dashed #adb5bd;
}

/* 电子材料页面特有样式 */
.purity-showcase {
    text-align: center;
    margin: 40px 0;
}

.purity-card {
    padding: 30px 20px;
    border-radius: 10px;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.purity-card.highlight {
    border: 2px solid #007bff;
    position: relative;
    z-index: 1;
}

.purity-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: #007bff;
    display: block;
}

.purity-label {
    background: #007bff;
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* 隔热材料页面特有样式 */
.energy-calculator {
    margin: 40px 0;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #495057;
}

.result-box {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    height: 100%;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #dee2e6;
}

.result-item.highlight {
    background: #e7f1ff;
    margin: 0 -25px;
    padding: 15px 25px;
    border-bottom: none;
}

/* 应用卡片通用样式 */
.app-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
    height: 100%;
}

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

.app-image {
    height: 180px;
    background-size: cover;
    background-position: center;
}

.app-content {
    padding: 20px;
}

.app-specs {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
}

.spec {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.spec:last-child {
    margin-bottom: 0;
}

.spec .value {
    font-weight: 600;
    color: #007bff;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .purity-card {
        margin-bottom: 20px;
    }
    
    .mechanism-step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin-right: 0;
        margin-bottom: 10px;
    }
}


/*领域细节*/
 
 .application-card {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
            height: 150px; /* 固定高度 */
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            background: #dedcdc;
        }
        
        .application-card:hover {
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
            transform: translateY(-5px);
        }


  .form-container {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px;
    margin: 20px 0;
}

.form-header {
    margin-bottom: 15px;
    border-bottom: 1px solid var(--color-gray-200);
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
    margin: 0;
}

.form-subtitle {
    font-size: 0.9rem;
    color: #6c757d;
    margin-top: 5px;
}

/* 表单控件样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    font-weight: 500;
    color: #495057;
    margin-bottom: 8px;
    display: block;
}

.form-label.required::after {
    content: " *";
    color: #dc3545;
}

.form-control {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius);
    padding: 10px 12px;
    font-size: 0.95rem;
    transition: var(--transition);
    background-color: white;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(26, 111, 179, 0.25);
    outline: 0;
}

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25);
}

/* 选择框样式 */
.select2-container {
    width: 100% !important;
}

.select2-container .select2-selection {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius);
    min-height: 42px;
    padding: 5px 10px;
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    line-height: 32px;
    padding-left: 0;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 40px;
}

/* 文本域样式 */
textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* 按钮样式 */
.btn-submit {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    padding: 10px 30px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
}

.btn-submit:hover {
    background-color: #155a8a;
    border-color: #155a8a;
    transform: translateY(-1px);
}

.btn-submit:active {
    transform: translateY(0);
}

/* 验证信息样式 */
.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 5px;
    font-size: 0.875rem;
    color: var(--danger-color);
}

.invalid-feedback.show {
    display: block;
}

/* 成功/错误提示 */
.alert {
    border-radius: var(--radius);
    padding: 12px 20px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

/* 弹出框适配样式 */
.modal-form {
    padding: 15px;
}

.modal-form .form-container {
    padding: 20px;
    margin: 0;
    box-shadow: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .form-container {
        padding: 20px;
    }
    
    .form-title {
        font-size: 1.3rem;
    }
    
    .btn-submit {
        width: 100%;
    }
}

/* 特殊样式：电话和邮箱 */
.contact-fields {
    display: flex;
    gap: 15px;
}

@media (max-width: 576px) {
    .contact-fields {
        flex-direction: column;
        gap: 20px;
    }
}

/* 加载状态 */
.btn-submit.loading {
    position: relative;
    color: transparent;
}

.btn-submit.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-top: -10px;
    margin-left: -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 表单说明 */
.form-note {
    font-size: 0.85rem;
    color: #6c757d;
    margin-top: 5px;
}

/* 产品选择标签样式 */
.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.product-tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    background-color: #e9ecef;
    border-radius: 20px;
    font-size: 0.85rem;
    color: #495057;
    cursor: pointer;
    transition: var(--transition);
}

.product-tag:hover {
    background-color: #dee2e6;
}

.product-tag.active {
    background-color: var(--primary-color);
    color: white;
}

.product-tag i {
    margin-right: 5px;
    font-size: 0.9rem;
}
 /* 抛光材料特有样式 */
        .polishing-header {
            background: linear-gradient(rgba(60, 60, 80, 0.85), rgba(60, 60, 80, 0.95)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
        }
        
        .surface-roughness {
            height: 200px;
            position: relative;
            background: #f8f9fa;
            border-radius: 8px;
            padding: 20px;
            margin: 20px 0;
        }
        
        .roughness-item {
            margin-bottom: 15px;
        }
        
        .roughness-bar {
            height: 20px;
            background: #e9ecef;
            border-radius: 10px;
            margin-top: 5px;
            overflow: hidden;
        }
        
        .roughness-fill {
            height: 100%;
            border-radius: 10px;
        }
        
        .material-match {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
            transition: all 0.3s;
        }
        
        .material-match:hover {
            border-color: var(--primary-color);
            background: rgba(26, 111, 179, 0.03);
        }



              .content-card {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            overflow: hidden;
            margin-bottom: 30px;
        }
        
        .card-header {
            background: linear-gradient(135deg, var(--primary-color), #0d3c61);
            color: white;
            padding: 20px;
            font-size: 1.2rem;
            font-weight: 600;
        }
        
        .card-body {
            padding: 30px;
        }
        
        /* 导电机理可视化容器 */
        .conductivity-visual {
            position: relative;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 20px;
            margin: 40px 0;
        }
        
        /* 每个阶段的容器 */
        .conductivity-stage {
            flex: 1;
            text-align: center;
            position: relative;
        }
        
        /* 步骤编号 */
        .stage-number {
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 20px;
            box-shadow: 0 5px 15px rgba(26, 111, 179, 0.3);
            position: relative;
            z-index: 2;
        }
        
        /* 步骤内容 */
        .stage-content {
            padding: 20px;
            background: #f8f9fa;
            border-radius: 10px;
            border: 2px solid #e9ecef;
            min-height: 300px;
            transition: all 0.3s ease;
        }
        
        .stage-content:hover {
            transform: translateY(-5px);
            border-color: var(--primary-color);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        
        .stage-content h6 {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 15px;
            font-size: 1.1rem;
        }
        
        .stage-content p {
            color: #666;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        
        /* 可视化盒子 */
        .visual-box {
            width: 100%;
            height: 180px;
            background: white;
            border-radius: 8px;
            border: 2px dashed #dee2e6;
            position: relative;
            overflow: hidden;
            margin-top: 15px;
        }
        
        /* 粒子样式 */
        .particle {
            position: absolute;
            border-radius: 50%;
            background: var(--primary-color);
        }
        
        /* 步骤1：分散粒子 */
        .stage-1 .particle {
            animation: float 3s infinite ease-in-out;
        }
        
        /* 步骤2：连接粒子 */
        .stage-2 .connection {
            position: absolute;
            background: #ff9e00;
            z-index: 1;
        }
        
        /* 步骤3：网络粒子 */
        .stage-3 .particle {
            box-shadow: 0 0 10px rgba(26, 111, 179, 0.5);
        }
        
        /* 连线动画 */
        .connection {
            animation: pulse 2s infinite;
        }
        
        /* 动画定义 */
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        
        @keyframes pulse {
            0%, 100% { opacity: 0.3; }
            50% { opacity: 1; }
        }
        
        /* 导电参数展示 */
        .conductivity-params {
            display: flex;
            justify-content: space-around;
            margin-top: 40px;
            padding: 20px;
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 10px;
        }
        
        .param-item {
            text-align: center;
            padding: 15px;
        }
        
        .param-value {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 5px;
        }
        
        .param-label {
            font-size: 0.9rem;
            color: #666;
        }
        
        /* 响应式调整 */
        @media (max-width: 992px) {
            .conductivity-visual {
                flex-direction: column;
            }
            
            .conductivity-stage {
                margin-bottom: 30px;
            }
            
            .conductivity-params {
                flex-wrap: wrap;
            }
            
            .param-item {
                flex: 0 0 50%;
                margin-bottom: 15px;
            }
        }
        
        @media (max-width: 576px) {
            .param-item {
                flex: 0 0 100%;
            }
        }