/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 导航栏样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo h1 {
    color: #0066cc;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #0066cc;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero区域样式 */
.hero {
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    color: #fff;
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.5;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { transform: translateX(0) translateY(0); }
    100% { transform: translateX(100px) translateY(100px); }
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    line-height: 1.2;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* 滚动动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background-color: #ff6600;
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
}

.btn-primary:hover {
    background-color: #e65c00;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 102, 0, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background-color: #fff;
    color: #0066cc;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

/* 轮播组件样式 */
.carousel {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.carousel-inner {
    display: flex;
    transition: transform 0.5s ease;
}

.carousel-item {
    flex: 0 0 100%;
    position: relative;
}

.carousel-item img {
    width: 100%;
    height: auto;
    display: block;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 20px;
    text-align: center;
}

.carousel-indicators {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.carousel-indicators li {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-indicators li.active {
    background-color: #fff;
    transform: scale(1.2);
}

/* 滚动触发的动画效果 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.8s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* 图片区块样式 */
.image-section {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.image-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.image-section img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.image-section:hover img {
    transform: scale(1.05);
}

.image-section .image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.7));
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.image-section:hover .image-overlay {
    opacity: 1;
}

.image-section .image-title {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.image-section:hover .image-title {
    transform: translateY(0);
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 章节通用样式 */
section {
    padding: 60px 0;
}

section h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #333;
    font-weight: 700;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: #0066cc;
    margin: 15px auto 0;
}

/* 关于我们样式 */
.about {
    background-color: #fff;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

@media (min-width: 768px) {
    .about-content {
        flex-direction: row;
        align-items: center;
    }
}

.about-text {
    flex: 1;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-text p {
    margin-bottom: 20px;
}

/* 核心优势样式 */
.capabilities {
    background-color: #f8f9fa;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.capability-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.capability-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.capability-item h3 {
    color: #0066cc;
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* 产品样式 */
.products {
    background-color: #fff;
}

/* 产品类别样式 */
.products-categories {
    margin-bottom: 50px;
}

.category-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.category-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.category-card-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.category-image {
    height: 200px;
    overflow: hidden;
    background-color: #f8f9fa;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.category-card:hover .category-image img {
    transform: scale(1.1);
}

.category-content {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: white;
}

.category-content h3 {
    color: #0066cc;
    margin-bottom: 12px;
    font-size: 1.4rem;
    font-weight: 700;
}

.category-content p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.category-content .btn {
    margin-top: auto;
    align-self: flex-start;
}

/* 精选产品样式 */
.featured-products {
    margin-top: 50px;
}

.featured-title {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 30px;
    font-weight: 600;
    text-align: center;
}

.products-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 30px;
}

/* 产品卡片样式 */
.product-card {
    display: grid;
    grid-template-columns: 200px 1.5fr 160px;
    gap: 30px;
    background-color: white;
    border: 1px solid #e0e0e0;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.product-card:hover {
    box-shadow: 0 8px 28px rgba(0,0,0,0.15);
    transform: translateY(-5px);
    border-color: #d60000;
}

.product-card-inner {
    display: grid;
    grid-template-columns: inherit;
    gap: inherit;
    width: 100%;
    height: 100%;
}

/* 产品图片区域 */
.product-image-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 20px;
    padding: 15px;
    background-color: #fafafa;
    border-radius: 12px;
    border: 1px solid #f0f0f0;
}

.product-image {
    max-width: 100%;
    max-height: 160px;
    object-fit: contain;
    transition: all 0.3s ease;
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px;
    width: 170px;
    height: 150px;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.08);
}

.product-card:hover .product-image {
    transform: scale(1.08);
}

/* 产品按钮区域 */
.product-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

/* 按钮样式 */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    border: 2px solid #d60000;
    cursor: pointer;
    padding: 12px 20px;
    font-size: 0.85rem;
    text-decoration: none;
    text-align: center;
    border-radius: 8px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #d60000;
    color: white;
}

/* Information Sheet按钮 */
.btn-info-sheet {
    background-color: #d60000;
    color: white;
    border-color: #d60000;
}

.btn-info-sheet:hover {
    background-color: #c40000;
    border-color: #c40000;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(214,0,0,0.3);
    color: white;
    text-decoration: none;
}

/* Request a Quote按钮 */
.btn-quote {
    background-color: #d60000;
    color: white;
    border-color: #d60000;
}

.btn-quote:hover {
    background-color: #c40000;
    border-color: #c40000;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(214,0,0,0.3);
}

/* 产品信息区域 */
.product-info-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding-right: 25px;
    border-right: 1px solid #e0e0e0;
    flex: 1;
}

.product-name {
    color: #333;
    margin-bottom: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.3;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-model {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
}

.product-type-tag {
    font-size: 0.85rem;
    font-weight: 500;
    color: #666;
    text-transform: uppercase;
}

/* 产品规格参数 */
.product-specs {
    display: flex;
    flex-direction: column;
    gap: 15px;
    font-size: 0.95rem;
    color: #333;
    width: 100%;
    padding-top: 15px;
    border-top: 1px solid #f0f0f0;
}

.spec-row {
    display: flex;
    gap: 20px;
    align-items: center;
    padding: 5px 0;
}

.spec-label {
    font-weight: 600;
    min-width: 120px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    font-size: 0.9rem;
}

.spec-value {
    flex: 1;
    font-weight: 500;
    color: #333;
    font-size: 0.95rem;
}

/* 产品曲线图预览区域 */
.product-curve-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 15px;
    padding-left: 25px;
}

.curve-preview {
    width: 100%;
    height: 180px;
    border: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #fafafa;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.curve-preview:hover {
    background-color: #f0f0f0;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.curve-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
    padding: 15px;
}

.curve-overlay {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background-color: rgba(255,255,255,0.85);
    padding: 8px 15px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.curve-preview:hover .curve-overlay {
    background-color: rgba(255,255,255,0.95);
    color: #d60000;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.curve-click-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 产品卡片响应式设计 */
@media (max-width: 1200px) {
    .product-card {
        grid-template-columns: 160px 1fr 160px;
        gap: 15px;
        padding: 15px;
    }
    
    .product-image {
        width: 140px;
        height: 130px;
    }
    
    .product-buttons {
        gap: 8px;
    }
    
    .btn {
        padding: 8px 12px;
        font-size: 0.75rem;
    }
    
    .spec-label {
        min-width: 100px;
        font-size: 0.8rem;
    }
    
    .spec-value {
        font-size: 0.8rem;
    }
    
    .curve-preview {
        height: 130px;
    }
}

@media (max-width: 992px) {
    .product-card {
        grid-template-columns: 160px 1fr 160px;
        gap: 15px;
        padding: 15px;
    }
    
    .product-card-inner {
        grid-template-columns: inherit;
    }
    
    .product-info-section {
        padding-right: 0;
        border-right: none;
    }
    
    .product-curve-section {
        padding-left: 0;
    }
    
    .product-image {
        width: 140px;
        height: 130px;
    }
    
    .curve-preview {
        height: 130px;
    }
}

.product-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.product-image-container {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: #e9ecef;
}

.product-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-item:hover .product-image-container img {
    transform: scale(1.05);
}

.product-content {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-item h3 {
    color: #0066cc;
    margin-bottom: 12px;
    font-size: 1.4rem;
    font-weight: 700;
    text-align: center;
    padding-bottom: 10px;
    border-bottom: 2px solid #e9ecef;
}

.product-item .product-category {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: block;
}

.product-item .product-description {
    color: #555;
    line-height: 1.6;
    margin-bottom: 15px;
    flex: 1;
}

.product-item ul {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.product-item li {
    margin-bottom: 8px;
    padding-left: 22px;
    position: relative;
    font-size: 0.95rem;
    color: #555;
}

.product-item li::before {
    content: '✓';
    color: #0066cc;
    font-weight: bold;
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 1.1rem;
}

.product-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: auto;
}

.product-actions .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* 产品搜索和筛选样式 */
.product-filters {
    margin-bottom: 30px;
    background-color: white;
    border: 1px solid #e0e0e0;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    padding: 30px;
    overflow: hidden;
}

.filter-container {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    align-items: center;
    margin-bottom: 25px;
}

.search-bar {
    flex: 1;
    min-width: 350px;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 15px 60px 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: white;
    color: #333;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.08);
}

.search-input:focus {
    outline: none;
    border-color: #d60000;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1), 0 0 0 3px rgba(214,0,0,0.1);
}

.search-input::placeholder {
    color: #999;
}

.search-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    padding: 14px 20px;
    background-color: #d60000;
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background-color: #c40000;
    transform: translateY(-50%) scale(1.02);
    box-shadow: 0 6px 12px rgba(214,0,0,0.25);
}

.clear-search-btn {
    position: absolute;
    right: 65px;
    top: 50%;
    transform: translateY(-50%);
    padding: 10px;
    background-color: transparent;
    color: #666;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
}

.clear-search-btn:hover {
    background-color: #f0f0f0;
    color: #333;
    transform: translateY(-50%) scale(1.1);
}

.filter-results {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 25px;
    border-top: 1px solid #e0e0e0;
    flex-wrap: wrap;
    gap: 15px;
}

.results-count {
    color: #333;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.results-count strong {
    color: #d60000;
    font-weight: 700;
    font-size: 1.2rem;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.95rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-weight: 600;
}

#resetFiltersBtn {
    background-color: white;
    color: #d60000;
    border: 2px solid #d60000;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
}

#resetFiltersBtn:hover {
    background-color: #d60000;
    color: white;
    border-color: #d60000;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(214,0,0,0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-filters {
        padding: 20px;
    }
    
    .filter-container {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }
    
    .search-bar {
        min-width: 100%;
    }
    
    .filter-options {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: stretch;
        margin-right: 0;
    }
    
    .filter-label {
        margin-bottom: 8px;
    }
    
    .filter-results {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .results-count {
        justify-content: center;
    }
}



.product-image-container {
    height: 220px;
    overflow: hidden;
    background-color: #f8f9fa;
    position: relative;
}

.product-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    opacity: 0;
    animation: fadeInImage 0.8s ease forwards;
}

@keyframes fadeInImage {
    from {
        opacity: 0;
        transform: scale(1.1);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.product-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,102,204,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.product-card:hover .product-image-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.overlay-content i {
    font-size: 2rem;
    margin-bottom: 5px;
}

.overlay-content span {
    font-size: 1.1rem;
    font-weight: 600;
}

.product-card:hover .product-image {
    transform: scale(1.1);
}

/* 曲线图预览样式 */
.product-curve-preview {
    background-color: #f8f9fa;
    padding: 15px 20px;
    border-bottom: 1px solid #e9ecef;
}

.curve-preview-container {
    background-color: white;
    border-radius: 6px;
    padding: 15px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.curve-preview-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 10px;
    width: 100%;
}

.curve-preview-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.curve-preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: #666;
    font-size: 0.85rem;
}

.curve-preview-placeholder i {
    font-size: 1.5rem;
    color: #0066cc;
}

.product-info {
    padding: 20px 25px 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: white;
}

.product-name {
    color: #0066cc;
    margin-bottom: 12px;
    font-size: 1.45rem;
    font-weight: 700;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.product-card:hover .product-name {
    color: #0052a3;
}

.product-model {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 6px;
    font-weight: 500;
}

.product-category {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 18px;
    text-transform: capitalize;
    display: flex;
    align-items: center;
}

.product-category::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #0066cc;
    border-radius: 50%;
    margin-right: 8px;
}

.product-desc {
    color: #555;
    line-height: 1.65;
    margin-bottom: 20px;
    flex: 1;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.product-actions .btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    width: 100%;
    text-align: center;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid transparent;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.btn-primary {
    background-color: #0066cc;
    color: white;
    border: 1px solid #0066cc;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-primary:hover {
    background-color: #0052a3;
    border-color: #0052a3;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,102,204,0.2);
}

.btn-secondary {
    background-color: white;
    color: #0066cc;
    border: 1px solid #0066cc;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.btn-secondary:hover {
    background-color: #f0f7ff;
    border-color: #0052a3;
    color: #0052a3;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,102,204,0.15);
}

/* Request a Quote按钮样式 */
.btn-quote {
    background-color: #232f3e;
    color: white;
    border: 1px solid #232f3e;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-quote:hover {
    background-color: #37475a;
    border-color: #37475a;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(35,47,62,0.2);
}

/* 按钮图标样式 */
.btn i {
    font-size: 1rem;
    margin-right: 5px;
}

/* 响应式按钮样式 */
@media (max-width: 768px) {
    .product-actions {
        gap: 8px;
    }
    
    .product-actions .btn {
        padding: 10px 16px;
        font-size: 0.85rem;
    }
}

/* 按钮图标样式 */
.btn i {
    font-size: 1rem;
}

/* 产品卡片动画延迟 */
.product-card:nth-child(1) {
    animation-delay: 0.1s;
}

.product-card:nth-child(2) {
    animation-delay: 0.2s;
}

.product-card:nth-child(3) {
    animation-delay: 0.3s;
}

.product-card:nth-child(4) {
    animation-delay: 0.4s;
}

.product-card:nth-child(5) {
    animation-delay: 0.5s;
}

.product-card:nth-child(6) {
    animation-delay: 0.6s;
}

/* 产品详情弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    animation: fadeInModal 0.3s ease forwards;
}

@keyframes fadeInModal {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: white;
    margin: 3% auto;
    padding: 0;
    border: none;
    border-radius: 16px;
    width: 95%;
    max-width: 1100px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation-name: modalopen;
    animation-duration: 0.5s;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

@keyframes modalopen {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.close {
    color: #666;
    float: right;
    font-size: 32px;
    font-weight: bold;
    position: absolute;
    right: 25px;
    top: 15px;
    cursor: pointer;
    z-index: 2001;
    transition: all 0.3s ease;
    line-height: 1;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.9);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.close:hover, .close:focus {
    color: #000;
    background-color: rgba(248,249,250,1);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* 产品详情内容样式 */
.product-details {
    padding: 50px;
}

.product-details-header {
    margin-bottom: 35px;
    padding-bottom: 25px;
    border-bottom: 2px solid #e9ecef;
    text-align: center;
}

.product-details-header h2 {
    color: #0066cc;
    margin-bottom: 15px;
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.2;
}

.product-details-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.product-details-left {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.product-detail-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
    transition: transform 0.3s ease;
    border: 1px solid #e9ecef;
}

.product-detail-image:hover {
    transform: scale(1.02);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
    padding: 18px 24px;
    font-size: 1.15rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.download-full {
    background-color: #0066cc;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(0,102,204,0.3);
}

.download-full:hover {
    background-color: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,102,204,0.4);
}

.product-details-right {
    display: flex;
    flex-direction: column;
    gap: 35px;
}

.detail-section {
    margin-bottom: 30px;
    padding: 25px;
    background-color: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #0066cc;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.detail-section h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.detail-section h3::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 24px;
    background-color: #0066cc;
    border-radius: 4px;
}

.detail-section p {
    color: #555;
    line-height: 1.7;
    font-size: 1.05rem;
    margin-bottom: 0;
}

.detail-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.detail-section li {
    margin-bottom: 12px;
    padding-left: 28px;
    position: relative;
    color: #555;
    line-height: 1.7;
    font-size: 1.05rem;
    transition: padding-left 0.3s ease;
}

.detail-section li::before {
    content: '✓';
    color: #28a745;
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: 2px;
    background-color: #e3fcef;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.detail-section li:hover {
    padding-left: 32px;
}

/* 产品规格参数表格样式 */
.specifications, .specifications-table {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    line-height: 1.7;
    color: #555;
    box-shadow: inset 0 0 0 1px #e9ecef;
    overflow-x: auto;
}

.specifications table, .specifications-table table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
    font-size: 0.95rem;
}

.specifications th, .specifications td,
.specifications-table th, .specifications-table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid #e9ecef;
}

.specifications th, .specifications-table th {
    background-color: #f0f7ff;
    color: #1976d2;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    width: 35%;
    text-transform: capitalize;
}

.specifications td, .specifications-table td {
    color: #333;
    font-size: 0.95rem;
    background-color: white;
}

.specifications tr:nth-child(even) td, .specifications-table tr:nth-child(even) td {
    background-color: #fafafa;
}

.specifications tr:hover td, .specifications-table tr:hover td {
    background-color: #e3f2fd;
}

.error-message {
    text-align: center;
    color: #dc3545;
    padding: 60px 40px;
    font-size: 1.1rem;
    background-color: #fff5f5;
    border-radius: 12px;
    border: 1px solid #fecaca;
    margin: 40px auto;
    max-width: 600px;
}

/* 下载按钮样式 */
.download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.download:hover {
    text-decoration: none;
    transform: translateY(-2px);
}

/* 产品分类标签样式 */
.product-category-tag {
    display: inline-block;
    background-color: #e3f2fd;
    color: #1976d2;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-right: 8px;
    margin-bottom: 8px;
    text-transform: capitalize;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-details {
        padding: 30px 25px;
    }
    
    .product-details-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-details-header h2 {
        font-size: 1.8rem;
    }
    
    .detail-section {
        padding: 20px;
    }
    
    .specifications th,
    .specifications td {
        padding: 12px 15px;
        font-size: 0.95rem;
    }
    
    .specifications th {
        width: 40%;
    }
    
    .modal-content {
        margin: 5% auto;
        max-height: 95vh;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-filters {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .search-bar input {
        width: 100%;
    }
    
    .product-details-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-details {
        padding: 20px;
    }
    
    .product-details-header h2 {
        font-size: 1.5rem;
    }
}

/* 应用领域样式 */
.applications {
    background-color: #f8f9fa;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.application-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.application-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.application-item h3 {
    color: #0066cc;
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* 联系我们样式 */
.contact {
    background-color: #fff;
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

@media (min-width: 768px) {
    .contact-content {
        flex-direction: row;
    }
}

.contact-info {
    flex: 1;
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
}

.contact-info h3 {
    color: #0066cc;
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.contact-info strong {
    color: #333;
}

.contact-form {
    flex: 1;
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
}

.contact-form h3 {
    color: #0066cc;
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
}

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

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #0099ff;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #0099ff;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #0099ff;
}

.footer-contact p {
    margin-bottom: 10px;
    color: #ddd;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
    color: #aaa;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        padding: 20px;
        gap: 15px;
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    section h2 {
        font-size: 1.8rem;
    }

    .about-content,
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    section {
        padding: 40px 0;
    }

    .capabilities-grid,
    .products-grid,
    .applications-grid {
        grid-template-columns: 1fr;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #0066cc;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 成功消息样式 */
.success-message {
    background-color: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 5px;
}

/* 新闻样式 */
.news {
    background-color: #fff;
    padding: 60px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.news-item {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.news-item h3 {
    color: #0066cc;
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.news-item .news-date {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
    display: block;
}

.news-item .news-content {
    color: #555;
    margin-bottom: 20px;
    line-height: 1.6;
}

.news-item .news-category {
    display: inline-block;
    background-color: #0066cc;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 15px;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* 错误消息样式 */
.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid #f5c6cb;
}

/* 产品中心新样式 */

/* 产品中心背景图 */
.products {
    position: relative;
    overflow: hidden;
    padding: 40px 0;
    background-color: #ffffff;
    background-size: cover;
    background-position: center;
}

/* 产品列表布局 - 左右结构 */
.products-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
    margin-top: 0;
    align-items: start;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
}

/* 产品左侧边栏 */
.products-sidebar {
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    padding: 25px;
    position: sticky;
    top: 30px;
    height: fit-content;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    border-radius: 16px;
}

/* 筛选栏标题 */
.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.filters-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #333;
    margin: 0;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 重置筛选按钮 */
.reset-filters-btn {
    background: none;
    border: 2px solid #d60000;
    color: #d60000;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    padding: 8px 16px;
    transition: all 0.3s ease;
    text-decoration: none;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.reset-filters-btn:hover {
    color: white;
    background-color: #d60000;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(214,0,0,0.25);
}

.filter-section {
    margin-bottom: 15px;
    border: 1px solid #e0e0e0;
    overflow: hidden;
    border-radius: 4px;
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background-color: #f8f9fa;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 1px solid #e0e0e0;
}

.filter-section-header:hover {
    background-color: #e9ecef;
}

.filter-section-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #333;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 3px;
    transition: all 0.3s ease;
    color: #666;
    font-size: 0.8rem;
}

.filter-toggle:hover {
    background-color: #d4d4d4;
    color: #333;
}

.filter-toggle.active {
    transform: rotate(180deg);
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 10px 15px;
    background-color: white;
    max-height: 300px;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.filter-section.collapsed .filter-options {
    max-height: 0;
    padding: 0 15px;
    overflow: hidden;
    border-bottom: none;
}

.filter-section.collapsed .filter-section-header {
    border-bottom: none;
}

/* 筛选条件计数样式 */
.filter-count {
    color: #333;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: auto;
    background-color: #f0f0f0;
    padding: 2px 6px;
    border-radius: 10px;
}

/* 筛选选项样式 */
.filter-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: transparent;
    border: none;
    text-align: left;
    width: 100%;
}

.filter-option:hover {
    background-color: #f0f0f0;
}

.filter-option input[type="checkbox"] {
    margin-right: 8px;
    accent-color: #d60000;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.filter-option span {
    flex: 1;
    font-size: 0.85rem;
    color: #333;
    transition: all 0.3s ease;
}

.filter-option input[type="checkbox"]:checked + span {
    font-weight: 600;
    color: #d60000;
}

/* 筛选下拉框样式 */
.filter-select-container {
    width: 100%;
}

.filter-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 0;
    font-size: 0.85rem;
    background-color: white;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: #d60000;
    box-shadow: 0 0 0 2px rgba(214,0,0,0.1);
}

/* 产品标签页样式 */
.products-tabs {
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
}

.tab {
    font-size: 1rem;
    font-weight: 700;
    color: #666;
    cursor: pointer;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tab.active {
    color: #d60000;
    border-bottom-color: #d60000;
}

.tab:hover {
    color: #333;
}

/* 滚动条样式优化 */
.filter-options::-webkit-scrollbar {
    width: 5px;
}

.filter-options::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.filter-options::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 2.5px;
}

.filter-options::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

.full-width {
    width: 100%;
}

/* 封装类型筛选样式 */
.package-types-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.package-type-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: white;
}

.package-type-option:hover {
    border-color: #0066cc;
    background-color: #f8f9fa;
}

.package-type-option.selected {
    border-color: #0066cc;
    background-color: rgba(0,102,204,0.05);
    font-weight: 600;
}

.package-type-image-container {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    overflow: hidden;
    border-radius: 6px;
    background-color: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.package-type-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    max-width: 100%;
    max-height: 100%;
}

.package-type-name {
    font-size: 0.95rem;
    color: #495057;
    flex: 1;
}

/* 筛选选项列表样式 */
.filter-options-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 筛选选项样式 */
.filter-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-option:hover {
    color: #0066cc;
}

/* 筛选复选框样式 */
.filter-checkbox {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: #d60000;
}

.filter-checkbox:checked + span {
    font-weight: 600;
    color: #d60000;
}

/* 产品中心导航栏样式 */
.product-nav {
    margin: 30px 0;
    padding: 20px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.product-nav-container {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.product-nav-section {
    min-width: 200px;
    flex: 1;
}

.product-nav-section .nav-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-nav-section .nav-title::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 20px;
    background-color: #0066cc;
    border-radius: 3px;
}

.product-nav-section .nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-nav-section .nav-list li {
    transition: all 0.3s ease;
}

.product-nav-section .nav-list a {
    color: #555;
    text-decoration: none;
    font-size: 0.95rem;
    padding: 8px 12px;
    border-radius: 6px;
    display: block;
    transition: all 0.3s ease;
}

.product-nav-section .nav-list a:hover {
    color: #0066cc;
    background-color: rgba(0,102,204,0.05);
    transform: translateX(5px);
}

/* 响应式导航栏 */
@media (max-width: 768px) {
    .product-nav-container {
        flex-direction: column;
        gap: 25px;
    }
    
    .product-nav-section {
        min-width: 100%;
        padding-bottom: 15px;
        border-bottom: 1px solid #e9ecef;
    }
    
    .product-nav-section:last-child {
        padding-bottom: 0;
        border-bottom: none;
    }
    
    .product-nav-section .nav-title {
        font-size: 1rem;
    }
    
    .product-nav-section .nav-list a {
        font-size: 0.9rem;
    }
}

/* 响应式设计 - 产品中心 */
@media (max-width: 992px) {
    /* 产品列表布局 - 移动端 */
    .products-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .products-sidebar {
        position: static;
    }
    
    .filter-options {
        justify-content: center;
    }
}
/* 请求报价表单样式 */
#quoteModal .modal-content {
    max-width: 600px;
    margin: 10% auto;
    padding: 30px;
}

#quoteForm {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #333;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #d60000;
    box-shadow: 0 0 0 3px rgba(214,0,0,0.1);
}

.form-group input[readonly] {
    background-color: #f8f9fa;
    cursor: not-allowed;
    color: #666;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 15px;
}

.btn {
    padding: 12px 24px;
    font-size: 0.95rem;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background-color: #d60000;
    color: white;
}

.btn-primary:hover {
    background-color: #b30000;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(214,0,0,0.25);
}

.btn-cancel {
    padding: 12px 24px;
    background-color: #6c757d;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cancel:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(108,117,125,0.25);
}

.error-message {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 5px;
}

.success-message {
    color: #28a745;
    font-size: 0.85rem;
    margin-top: 5px;
}