.product-banner {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #1d4c30 0%, #2a6943 100%);
    overflow: hidden;
}

.product-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=factory%20floor%20with%20green%20polyurethane%20coating%20background&image_size=landscape_16_9') center/cover;
    opacity: 0.1;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(29, 76, 48, 0.9) 0%, rgba(42, 105, 67, 0.85) 100%);
}

.banner-content {
    position: relative;
    z-index: 1;
    color: white;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #f6d32f;
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.breadcrumb .current {
    color: #f6d32f;
    font-size: 14px;
    font-weight: 500;
}

.product-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
}

.product-slogan {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

.product-overview {
    padding: 80px 0;
    background-color: #f9fafb;
}

.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    width: 100%;
    /*aspect-ratio: 1 / 1;*/
    border-radius: 16px;
    overflow: hidden;
    background-color: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.main-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thumbnails {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.thumbnail {
    aspect-ratio: 1 / 1;
    border-radius: 12px;
    overflow: hidden;
    background-color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 3px solid transparent;
}

.thumbnail:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.thumbnail.active {
    border-color: #2a6943;
    box-shadow: 0 0 0 2px rgba(42, 105, 67, 0.2);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    padding: 40px;
    background-color: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.system-tag {
    padding: 8px 16px;
    background-color: #2a6943;
    color: white;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.product-info .feature-tag {
    padding: 8px 16px;
    background-color: #f9fafb;
    color: #2a6943;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.product-info .product-name {
    font-size: 32px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 20px;
}

.product-info .product-description {
    font-size: 16px;
    line-height: 1.8;
    color: #374151;
    margin-bottom: 30px;
}

.product-actions {
    display: flex;
    gap: 15px;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #2a6943 0%, #1d4c30 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(42, 105, 67, 0.4);
}

.btn-secondary {
    background-color: white;
    color: #2a6943;
    border: 2px solid #2a6943;
}

.btn-secondary:hover {
    background-color: #2a6943;
    color: white;
    transform: translateY(-3px);
}

.product-details {
    padding: 80px 0;
    background-color: white;
}

.details-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 50px;
    border-bottom: 2px solid #d1d5db;
    padding-bottom: 0;
}

.details-tabs .tab-btn {
    padding: 15px 30px;
   
    border: none;
    color: #374151;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease;
   
}

.details-tabs .tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: #2a6943;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.details-tabs .tab-btn:hover {
    color: #2a6943;
}

.details-tabs .tab-btn.active {
    color: #2a6943;
}

.details-tabs .tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.tab-content.active {
    display: block;
}

.specs-table {
    max-width: 800px;
    margin: 0 auto;
}

.specs-table table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.specs-table thead {
    background: linear-gradient(135deg, #2a6943 0%, #1d4c30 100%);
    color: white;
}

.specs-table th {
    padding: 18px 24px;
    text-align: left;
    font-weight: 600;
    font-size: 16px;
}

.specs-table td {
    padding: 16px 24px;
    border-bottom: 1px solid #d1d5db;
    color: #374151;
}

.specs-table tbody tr {
    background-color: white;
    transition: background-color 0.3s ease;
}

.specs-table tbody tr:hover {
    background-color: #f9fafb;
}

.specs-table tbody tr:last-child td {
    border-bottom: none;
}

.construction-content,
.packaging-content,
.certificates-content {
    max-width: 900px;
    margin: 0 auto;
}

.construction-content h3,
.packaging-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 25px;
}

.steps-list {
    list-style: none;
    padding: 0;
    margin: 0 0 40px 0;
    counter-reset: step;
}

.steps-list li {
    padding: 25px;
    background-color: #f9fafb;
    border-radius: 12px;
    margin-bottom: 20px;
    position: relative;
    padding-left: 70px;
}

.steps-list li::before {
    content: counter(step);
    counter-increment: step;
    position: absolute;
    left: 25px;
    top: 50%;
    transform: translateY(-50%);
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, #2a6943 0%, #1d4c30 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
}

.steps-list li strong {
    display: block;
    font-size: 18px;
    color: #2a6943;
    margin-bottom: 10px;
}

.steps-list li p {
    margin: 0;
    color: #374151;
    line-height: 1.7;
}

.notes-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.notes-list li {
    padding: 15px 0;
    padding-left: 30px;
    position: relative;
    color: #374151;
    border-bottom: 1px solid #d1d5db;
}

.notes-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 15px;
    color: #2a6943;
    font-weight: 700;
    font-size: 18px;
}

.notes-list li:last-child {
    border-bottom: none;
}

.packaging-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background-color: #f9fafb;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.spec-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.spec-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2a6943 0%, #1d4c30 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.spec-icon svg {
    width: 30px;
    height: 30px;
}

.spec-info h4 {
    font-size: 20px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 5px;
}

.spec-info p {
    margin: 0;
    color: #374151;
    font-size: 14px;
}

.storage-notes {
    list-style: none;
    padding: 0;
    margin: 0;
}

.storage-notes li {
    padding: 15px 0;
    padding-left: 30px;
    position: relative;
    color: #374151;
    border-bottom: 1px solid #d1d5db;
}

.storage-notes li::before {
    content: '•';
    position: absolute;
    left: 10px;
    top: 15px;
    color: #2a6943;
    font-weight: 700;
    font-size: 24px;
}

.storage-notes li:last-child {
    border-bottom: none;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.certificate-item {
    background-color: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.certificate-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.certificate-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: #f9fafb;
    cursor: pointer;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.certificate-info {
    padding: 25px;
}

.certificate-info h4 {
    font-size: 20px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 10px;
}

.certificate-info p {
    color: #374151;
    margin-bottom: 20px;
}

.view-cert-btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: #2a6943;
    color: white;
    border-radius: 25px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.view-cert-btn:hover {
    background-color: #1d4c30;
    transform: translateY(-2px);
    color: white;
}

.related-cases {
    padding: 80px 0;
    background-color: #f9fafb;
}

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

.case-card {
    background-color: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.case-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

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

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

.case-info {
    padding: 25px;
}

.case-info h3 {
    font-size: 20px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 10px;
}

.case-info p {
    color: #374151;
    margin-bottom: 20px;
}

.case-link {
    display: inline-block;
    color: #2a6943;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.case-link:hover {
    color: #1d4c30;
}

.related-products {
    padding: 80px 0;
    background-color: white;
}

.related-products .products-grid {
    grid-template-columns: repeat(3, 1fr);
    display: grid;
}

.form-modal,
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.form-modal.active,
.image-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

.form-modal-content,
.image-modal-content {
    background-color: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 100%;
    position: relative;
    animation: fadeInUp 0.4s ease-out;
}

.image-modal-content {
    max-width: 900px;
    max-height: 90%;
    padding: 0;
    overflow: hidden;
}

.image-modal-content img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.form-modal-close,
.image-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border: none;
    background-color: #f9fafb;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.form-modal-close:hover,
.image-modal-close:hover {
    background-color: #2a6943;
    color: white;
    transform: rotate(90deg);
}

.form-modal-close svg,
.image-modal-close svg {
    width: 20px;
    height: 20px;
}

.form-modal-title {
    font-size: 28px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 30px;
    text-align: center;
}

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

.modal-form .form-input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #d1d5db;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.modal-form .form-input:focus {
    outline: none;
    border-color: #2a6943;
}

.modal-form .submit-btn {
    width: 100%;
    padding: 15px 30px;
    background: linear-gradient(135deg, #2a6943 0%, #1d4c30 100%);
    color: white;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-form .submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(42, 105, 67, 0.4);
}

@media (max-width: 992px) {
    .overview-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-gallery {
        position: static;
    }

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

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

    .certificates-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .product-banner {
        padding: 80px 0 60px;
    }

    .product-title {
        font-size: 32px;
    }

    .product-slogan {
        font-size: 16px;
    }

    .product-actions {
        flex-direction: column;
    }

    .details-tabs {
        flex-wrap: wrap;
    }

    .details-tabs .tab-btn {
        flex: 1 1 45%;
        padding: 12px 15px;
        font-size: 14px;
    }

    .packaging-specs {
        grid-template-columns: 1fr;
    }

    .cases-grid {
        grid-template-columns: 1fr;
    }

    .related-products .products-grid {
        grid-template-columns: 1fr;
    }

    .form-modal-content {
        padding: 30px 20px;
    }

    .form-modal-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .product-title {
        font-size: 26px;
    }

    .product-info {
        padding: 25px;
    }

    .product-info .product-name {
        font-size: 24px;
    }

    .thumbnails {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }
}