/* ===================== 产品内容页样式 ===================== */
.product_container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    box-sizing: border-box;
}

.product_main {
    padding: 0 0 100px;
    background: #f8f9fa;
}

.product_breadcrumb-container {
    background: linear-gradient(to right, #0066cc, #0088ff);
    padding: 20px 0;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 40px;
}

.product_breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    font-size: 14px;
    color: #fff;
    line-height: 1.5;
}

.product_breadcrumb a {
    color: #fff;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    font-weight: 700;
    white-space: nowrap;
    margin: 2px 0;
    text-decoration: none;
}

.product_breadcrumb a:hover {
    color: #f0f7ff;
    text-decoration: none;
}

.product_breadcrumb .fa-home:before {
    margin-right: 5px;
}

.product_breadcrumb-separator {
    margin: 0 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    flex-shrink: 0;
}

.product_breadcrumb-current {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    white-space: nowrap;
    margin: 2px 0;
}

.product_article {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    margin-bottom: 60px;
}

.product_article-header {
    padding: 50px 50px 30px;
    border-bottom: 1px solid #eee;
}

.product_article-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 50px;
    color: #222;
    text-align: center;
}

.product_intro-slider {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
}

.product_intro {
    flex: 1;
    min-width: 300px;
    order: 1;
}

.product_article-meta {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #f0f0f0;
}

.product_meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.product_meta-item:last-child {
    margin-bottom: 0;
}

.product_meta-item i {
    color: #0066cc;
    font-size: 16px;
    min-width: 20px;
    text-align: center;
}

.product_meta-item span strong {
    color: #222;
    font-weight: 600;
}

.product_meta-item span a {
    color: #222;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 600;
}

.product_meta-item span a:hover {
    color: #0052a3;
    text-decoration: none;
}

.product_tag {
    display: inline-block;
    background: #f0f7ff;
    color: #0066cc;
    padding: 5px 12px;
    border-radius: 30px;
    font-size: 13px;
    margin-left: 6px;
    margin-bottom: 5px;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 500;
}

.product_tag:hover {
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 102, 204, 0.2);
}

.product_intro-text {
    font-size: 17px;
    line-height: 1.7;
    color: #444;
    margin-bottom: 25px;
}

.product_features {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 25px;
}

.product_feature-item {
    display: flex;
    align-items: center;
    background: #f0f7ff;
    padding: 10px 18px;
    border-radius: 8px;
    color: #0066cc;
    font-weight: 600;
    transition: all 0.3s ease;
}

.product_feature-item:hover {
    background: #0066cc;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.2);
}

.product_feature-item i {
    margin-right: 8px;
    font-size: 16px;
}

.product_slider {
    flex: 1;
    min-width: 300px;
    order: 2;
}

.product_slider-main {
    height: 350px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.product_slider-main img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: transform 0.5s ease;
}

.product_slider-main img:hover {
    transform: scale(1.02);
}

.product_slider-thumbs-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: 10px 50px 10px 50px;
}

.product_slider-thumbs {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 10px 0;
    margin: 0 -5px;
}

.product_slider-thumbs::-webkit-scrollbar {
    display: none;
}

.product_slider-thumb {
    flex: 0 0 auto;
    width: 80px;
    height: 70px;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f8f9fa;
    position: relative;
}

.product_slider-thumb:hover {
    border-color: #0066cc;
    transform: translateY(-3px);
}

.product_slider-thumb.active {
    border-color: #0066cc;
}

.product_slider-thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
}

.product_slider-thumb::before {
    content: attr(data-alt);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 100;
    margin-bottom: 5px;
}

.product_slider-thumb:hover::before {
    opacity: 1;
    visibility: visible;
}

.product_slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    border: 1px solid #eaeaea;
}

.product_slider-nav:hover {
    background-color: #fff;
    transform: translateY(-50%);
}

.product_slider-nav i {
    color: #0066cc;
}

.product_slider-prev {
    left: 0;
}

.product_slider-next {
    right: 0;
}

.product_slider-nav.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.product_article-content {
    padding: 40px 50px 50px;
    line-height: 1.8;
    color: #444;
}

.product_article-content h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 40px 0 20px;
    color: #222;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

.product_article-content h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 30px 0 15px;
    color: #333;
}

.product_article-content p {
    margin-bottom: 20px;
    font-size: 17px;
}

.product_article-content ul,
.product_article-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.product_article-content li {
    margin-bottom: 10px;
    font-size: 16px;
}

.product_article-content strong {
    color: #222;
    font-weight: 600;
}

.product_highlight-box {
    background: linear-gradient(135deg, #f0f7ff, #e6f0ff);
    border-left: 4px solid #0066cc;
    padding: 25px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
}

.product_highlight-box h3 {
    color: #0066cc;
    margin-top: 0;
    border-bottom: none;
    padding-bottom: 0;
    display: flex;
    align-items: center;
}

.product_highlight-box h3 i {
    margin-right: 10px;
    font-size: 20px;
}

.product_specs-table {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    margin: 30px 0;
    border: 1px solid #eaeaea;
}

.product_specs-row {
    display: flex;
    border-bottom: 1px solid #eaeaea;
    padding: 18px 25px;
}

.product_specs-row:last-child {
    border-bottom: none;
}

.product_specs-row:nth-child(even) {
    background: #f0f7ff;
}

.product_specs-name {
    flex: 1;
    font-weight: 600;
    color: #333;
}

.product_specs-value {
    flex: 1;
    color: #0066cc;
    font-weight: 500;
}

.product_applications {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    margin: 30px 0;
}

.product_application {
    flex: 1;
    min-width: 200px;
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.product_application:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border-color: #0066cc;
}

.product_application i {
    font-size: 36px;
    color: #0066cc;
    margin-bottom: 15px;
    display: block;
}

.product_application h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #222;
}

.product_application p {
    font-size: 15px;
    color: #666;
    margin: 0;
}

.product_article-pagination {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid #eee;
}

.product_pagination-wrapper {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.product_pagination-prev,
.product_pagination-next {
    display: flex;
    align-items: center;
    padding: 20px 25px;
    background: #fff;
    border-radius: 12px;
    text-decoration: none;
    color: #666;
    transition: all 0.4s ease;
    border: 1px solid #eee;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    flex: 1;
}

.product_pagination-prev {
    text-align: left;
}

.product_pagination-next {
    text-align: right;
    justify-content: flex-end;
}

.product_pagination-prev:hover,
.product_pagination-next:hover {
    background: linear-gradient(to right, #0066cc, #0088ff);
    color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 102, 204, 0.15);
    border-color: transparent;
}

.product_pagination-prev:hover .product_pagination-info h4,
.product_pagination-next:hover .product_pagination-info h4 {
    color: #fff;
}

.product_pagination-prev i,
.product_pagination-next i {
    font-size: 20px;
    margin: 0 15px;
}

.product_pagination-info {
    flex: 1;
}

.product_pagination-info span {
    display: block;
    font-size: 13px;
    color: #999;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.product_pagination-info h4 {
    font-size: 18px;
    font-weight: 600;
    color: #222;
    margin: 0;
    transition: color 0.3s ease;
}

.product_pagination-prev:hover .product_pagination-info span,
.product_pagination-next:hover .product_pagination-info span {
    color: rgba(255, 255, 255, 0.9);
}

.product_related-products {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    width: 100%;
    margin: 0 auto;
}

.product_related-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #222;
    display: flex;
    align-items: center;
}

.product_related-title i {
    color: #0066cc;
    margin-right: 15px;
    font-size: 28px;
}

.product_related-description {
    color: #666;
    font-size: 17px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.product_related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product_related-item {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.4s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid #eee;
}

.product_related-item::before {
    content: '';
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #0066cc, #0088ff);
}

.product_related-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #0066cc;
}

.product_related-image {
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f8f9fa;
}

.product_related-image a {
    display: block;
    position: relative;
    overflow: hidden;
}

.product_related-image a:hover img {
    transform: scale(1.02);
    transition: transform 0.3s ease;
}

.product_related-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    width: auto;
    height: auto;
    transition: transform 0.5s ease;
}

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

.product_related-content {
    padding: 20px;
    height: 65px;
    width: 95%;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.product_related-item-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    color: #222;
    margin-bottom: 10px;
    text-align: center;
}

.product_related-item-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.product_related-item:hover .product_related-item-title a {
    color: #0066cc;
}

.product_related-item-title a:hover {
    color: #0066cc;
}

.product_related-item-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
    margin: 0;
    flex-grow: 1;
}

.product_article,
.product_related-item {
    -webkit-animation: product_fadeInUp 0.6s ease;
    animation: product_fadeInUp 0.6s ease;
}

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

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

/* ===================== 咨询询单按钮样式 ===================== */
.product_inquiry-btn-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0 25px;
}

.product_inquiry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 30px;
    background: linear-gradient(135deg, #0066cc, #0088ff);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.2);
    min-width: 200px;
}

.product_inquiry-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.3);
    background: linear-gradient(135deg, #0052a3, #0066cc);
    color: #fff;
    text-decoration: none;
}

.product_inquiry-btn i {
    font-size: 18px;
}

.product_inquiry-phone {
    background: linear-gradient(135deg, #28a745, #34ce57);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.2);
}

.product_inquiry-phone:hover {
    background: linear-gradient(135deg, #218838, #28a745);
    box-shadow: 0 8px 20px rgba(40, 167, 69, 0.3);
}

.nav-container.fixed + .product_main .product_breadcrumb-container {
    margin-top: 90px;
}

/* ===================== 响应式设计 ===================== */
@media (max-width: 1200px) {
    .product_related-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
}

@media (max-width: 992px) {
    .product_article-header,
    .product_article-content {
        padding: 40px;
    }

    .product_article-title {
        font-size: 28px;
    }

    .product_intro {
        order: 2;
    }

    .product_slider {
        order: 1;
    }

    .product_related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product_related-products {
        padding: 40px;
    }

    .product_applications {
        flex-direction: column;
    }

    .product_application {
        min-width: 100%;
    }
}

@media (max-width: 768px) {
    .product_main {
        padding: 0 0 60px;
    }

    .product_breadcrumb-container {
        padding: 15px 0;
        margin-bottom: 30px;
    }

    .product_breadcrumb {
        font-size: 13px;
        flex-wrap: wrap;
    }

    .product_breadcrumb-separator {
        margin: 0 8px;
    }

    .product_article-header,
    .product_article-content {
        padding: 30px;
    }

    .product_article-title {
        font-size: 24px;
        margin-bottom: 25px;
    }

    .product_intro-slider {
        gap: 25px;
    }

    .product_slider-main {
        height: 280px;
    }

    .product_slider-thumbs-container {
        padding: 0 30px;
    }

    .product_article-meta {
        margin-bottom: 20px;
        padding-bottom: 20px;
    }

    .product_meta-item {
        font-size: 14px;
        margin-bottom: 10px;
    }

    .product_tag {
        font-size: 12px;
        padding: 4px 10px;
        margin: 2px 4px 2px 0;
    }

    .product_article-content h2 {
        font-size: 24px;
        margin: 30px 0 15px;
    }

    .product_article-content h3 {
        font-size: 20px;
    }

    .product_article-content p {
        font-size: 16px;
    }

    .product_specs-row {
        flex-direction: column;
        padding: 15px;
        gap: 5px;
    }

    .product_pagination-wrapper {
        flex-direction: column;
    }

    .product_pagination-prev,
    .product_pagination-next {
        width: 100%;
    }

    .product_pagination-info h4 {
        font-size: 16px;
    }

    .product_related-products {
        padding: 30px;
    }

    .product_related-title {
        font-size: 26px;
    }

    .product_related-title i {
        font-size: 22px;
        margin-right: 10px;
    }

    .product_related-description {
        font-size: 16px;
        margin-bottom: 30px;
    }

    .product_related-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product_related-item-title {
        font-size: 17px;
    }

    .product_features {
        flex-direction: column;
    }

    .nav-container.fixed + .product_main .product_breadcrumb-container {
        margin-top: 60px;
    }

    .product_inquiry-btn-container {
        flex-direction: column;
        gap: 12px;
        margin: 25px 0 20px;
    }
    
    .product_inquiry-btn {
        width: 100%;
        min-width: auto;
        padding: 14px 20px;
        font-size: 15px;
    }
    
    .product_inquiry-btn i {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .product_article-header,
    .product_article-content {
        padding: 20px;
    }

    .product_article-title {
        font-size: 22px;
    }

    .product_slider-main {
        height: 220px;
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }
    
    .product_slider-main img {
        max-width: 90%;
        max-height: 90%;
        margin: 0 auto;
    }

    .product_slider-thumb {
        width: 70px;
        height: 45px;
    }

    .product_slider-thumbs-container {
        width: 100%;
        max-width: 100%;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto;
        gap: 10px;
        box-sizing: border-box;
    }

    .product_slider-thumbs {
        margin: 10px 40px 10px 40px;
        flex: 1;
        display: flex;
        gap: 8px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 10px 0;
    }

    .product_slider-nav {
        width: 32px;
        height: 32px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, 0.9);
        border-radius: 50%;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        cursor: pointer;
        transition: all 0.3s ease;
        margin: 0;
    }
    
    .product_slider-nav:focus:not(.disabled) {
        outline: 2px solid #eee;
        outline-offset: 2px;
    }
    
    .product_slider-nav.disabled {
        opacity: 0.5;
        cursor: not-allowed;
        pointer-events: none;
    }
    
    .product_article-featured {
        padding: 0 20px;
        margin: 20px 0;
    }

    .product_pagination-prev,
    .product_pagination-next {
        padding: 15px;
    }

    .product_pagination-info h4 {
        font-size: 15px;
    }

    .product_related-products {
        padding: 20px;
    }

    .product_related-title {
        font-size: 22px;
    }

    .product_inquiry-btn {
        padding: 12px 16px;
        font-size: 14px;
    }
    
    .product_inquiry-btn i {
        font-size: 15px;
    }
}