/* ============================================
   3D Models Page
   ============================================ */

.threed-main {
    padding: 30px 0 60px;
    background: #f8fafc;
    min-height: 60vh;
    overflow-x: hidden;
}

/* ============ About Section Grid ============ */
.threed-about-intro {
    margin-bottom: 30px;
    font-size: 15px;
    line-height: 1.7;
    color: #475569;
}

.threed-about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.threed-about-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 24px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.threed-about-item:hover {
    border-color: #c7d2fe;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.06);
}

.threed-about-item h3 {
    font-size: 17px;
    font-weight: 600;
    color: #0f172a;
    margin: 0 0 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e7ff;
    line-height: 1.4;
}

.threed-about-item p {
    font-size: 14px;
    line-height: 1.7;
    color: #475569;
    margin: 0 0 12px;
}

.threed-about-item p strong {
    color: #1e293b;
    font-weight: 600;
}

.threed-about-item ul {
    margin: 0 0 12px;
    padding-left: 20px;
}

.threed-about-item li {
    font-size: 14px;
    line-height: 1.7;
    color: #475569;
    margin-bottom: 6px;
    list-style: disc;
}

.threed-about-item li strong {
    color: #1e40af;
    font-weight: 600;
}

.threed-about-cta {
    display: inline-block;
    margin-top: 6px;
    color: #1e40af;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: color 0.2s ease;
}

.threed-about-cta:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.threed-about-note {
    font-size: 13px;
    color: #64748b;
    font-style: italic;
    margin-top: 8px;
}

@media (max-width: 768px) {
    .threed-about-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .threed-about-item {
        padding: 18px;
    }
    .threed-about-item h3 {
        font-size: 15px;
    }
}

/* ==============================================
   Single 3D Model Page
   ============================================== */
.threed-single-main {
    padding-top: 20px;
    padding-bottom: 40px;
}
.threed-single-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.threed-single-breadcrumb {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 16px;
}
.threed-single-breadcrumb a {
    color: #2563eb;
    text-decoration: none;
}
.threed-single-breadcrumb a:hover {
    text-decoration: underline;
}
.threed-single-title {
    font-size: 28px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 12px;
}
.threed-single-desc {
    font-size: 15px;
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 24px;
}
.threed-single-content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}
.threed-single-left {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.threed-viewer-box {
    width: 100%;
    aspect-ratio: 1;
    background: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 16px;
}
.threed-viewer-box iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}
.threed-viewer-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 14px;
}
.threed-viewer-fullscreen {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 80%;
    padding: 10px 16px;
    background: #fff;
    color: #1e40af;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    text-decoration: none;
    border: 1px solid #1e40af;
    transition: all 0.2s ease;
    margin-bottom: 20px;
}
.threed-viewer-fullscreen:hover {
    background: #1e40af;
    color: #fff;
}
.threed-viewer-fullscreen svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}
.threed-specs {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    overflow: hidden;
}
.threed-specs-title {
    padding: 15px 20px;
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    background: #f9fafb;
    border-bottom: 1px solid #e5e7eb;
}
.threed-specs-table {
    width: 100%;
    border-collapse: collapse;
}
.threed-specs-table tr:nth-child(even) {
    background: #f9fafb;
}
.threed-specs-table th,
.threed-specs-table td {
    padding: 12px 20px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid #f0f0f0;
}
.threed-specs-table th {
    width: 40%;
    font-weight: 500;
    color: #666;
}
.threed-specs-table td {
    color: #111;
    font-weight: 400;
}
.threed-cta-section {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    color: #fff;
    margin-top: 20px;
}
.threed-cta-section h3 {
    margin: 0 0 10px 0;
    font-size: 22px;
}
.threed-cta-section p {
    margin: 0 0 20px 0;
    opacity: 0.9;
}
.threed-cta-btn {
    display: inline-block;
    padding: 12px 32px;
    background: #fff;
    color: #1e40af;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.2s;
}
.threed-cta-btn:hover {
    background: #f0f0f0;
}
.threed-detail-section {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 25px 30px;
    margin-top: 20px;
}
.threed-detail-section h2 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 22px;
    color: #111;
}
.threed-detail-section p {
    line-height: 1.7;
    color: #333;
    margin-bottom: 15px;
}
.threed-faq-section {
    margin-top: 20px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 25px 30px;
}
.threed-faq-section h2 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 22px;
    color: #111;
}
.threed-faq-item {
    border-bottom: 1px solid #f0f0f0;
    padding: 15px 0;
}
.threed-faq-item:last-child {
    border-bottom: none;
}
.threed-faq-q {
    font-weight: 600;
    color: #111;
    margin-bottom: 8px;
    font-size: 16px;
}
.threed-faq-a {
    color: #555;
    line-height: 1.6;
    margin: 0;
    font-size: 14px;
}
.threed-related {
    margin-top: 30px;
}
.threed-related h3 {
    font-size: 18px;
    margin-bottom: 15px;
}
.threed-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}
.threed-related-card {
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}
.threed-related-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}
.threed-related-img {
    width: 100%;
    aspect-ratio: 1;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #999;
}
.threed-related-card img.threed-related-img {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    aspect-ratio: 1;
    object-fit: contain;
    background: #f5f5f5;
}
.threed-related-title {
    padding: 12px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    color: #fff;
    background: #1e40af;
}
.threed-single-sidebar {
    margin-top: 30px;
}
@media (min-width: 992px) {
    .threed-single-layout {
        grid-template-columns: 260px 1fr;
    }
    .threed-single-sidebar {
        margin-top: 0;
    }
}
@media (min-width: 768px) {
    .threed-specs-table th {
        width: 30%;
    }
    .threed-single-sidebar {
        position: sticky;
        top: 20px;
    }
}
@media (max-width: 767px) {
    .threed-single-main {
        padding-top: 16px;
        padding-bottom: 32px;
    }
    .threed-single-breadcrumb {
        font-size: 12px;
        margin-bottom: 12px;
    }
    .threed-single-title {
        font-size: 20px;
        margin-bottom: 8px;
    }
    .threed-single-desc {
        font-size: 13px;
        margin-bottom: 16px;
    }
    .threed-single-content-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .threed-specs-table th,
    .threed-specs-table td {
        display: block;
        width: 100%;
        text-align: left;
        padding: 8px 12px;
    }
    .threed-specs-table tr {
        display: block;
        border-bottom: 1px solid #e5e7eb;
    }
    .threed-specs-table tr:last-child {
        border-bottom: none;
    }
    .threed-specs-table th {
        background: #f8fafc;
        font-weight: 600;
        border-bottom: 1px solid #e5e7eb;
    }
    .threed-cta-btn {
        width: 70%;
        justify-content: center;
    }
    .threed-cta-title {
        font-size: 20px;
    }
    .threed-cta-desc {
        font-size: 13px;
    }
    .threed-detail-section h3 {
        font-size: 18px;
    }
    .threed-faq-section h3 {
        font-size: 18px;
    }
    .threed-faq-question {
        font-size: 14px;
        padding: 12px 14px;
    }
    .threed-faq-answer {
        font-size: 13px;
        padding: 0 14px 12px;
    }
    .threed-related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .threed-related-title {
        font-size: 18px;
        margin-bottom: 16px;
    }
    .threed-related-card-title {
        font-size: 13px;
        padding: 8px;
    }
    .threed-single-sidebar {
        display: none;
    }
}
@media (max-width: 480px) {
    .threed-single-title {
        font-size: 18px;
    }
    .threed-related-grid {
        grid-template-columns: 1fr;
    }
}

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

/* Breadcrumb */
.threed-breadcrumb {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.threed-breadcrumb a {
    color: #3b82f6;
    text-decoration: none;
}

.threed-breadcrumb a:hover {
    text-decoration: underline;
}

.threed-breadcrumb .breadcrumb-current {
    color: #1e293b;
    font-weight: 500;
}

/* Page Header */
.threed-page-header {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d5a8a 100%);
    color: white;
    padding: 50px 40px;
    border-radius: 12px;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.threed-page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.threed-page-title {
    font-size: 32px;
    font-weight: 700;
    margin: 0 0 16px 0;
    line-height: 1.2;
    color: white;
    position: relative;
}

.threed-page-intro {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 0 24px 0;
    position: relative;
}

.threed-page-cta {
    position: relative;
}

.threed-quote-btn {
    display: inline-block;
    background: white;
    color: #1e3a5f !important;
    padding: 12px 32px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.threed-quote-btn:hover {
    background: #f1f5f9;
    transform: translateY(-1px);
    text-decoration: none;
}

/* Layout */
.threed-layout {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

/* Sidebar */
.threed-sidebar {
    width: 260px;
    flex-shrink: 0;
    position: sticky;
    top: 20px;
}

.threed-sidebar-widget {
    background: white;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.threed-widget-title {
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 16px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid #e2e8f0;
}

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

.threed-cat-item {
    margin-bottom: 2px;
}

.threed-cat-item > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    color: #475569;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.15s ease;
    font-weight: 500;
}

.threed-cat-item > a:hover {
    background: #f1f5f9;
    color: #1e3a5f;
}

.threed-cat-item.current > a {
    background: #eff6ff;
    color: #1e3a5f;
    font-weight: 600;
    border-left: 3px solid #1e3a5f;
    padding-left: 9px;
}

.threed-cat-count {
    font-size: 12px;
    color: #94a3b8;
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 400;
}

.threed-cat-item.current > a .threed-cat-count {
    background: #dbeafe;
    color: #1e3a5f;
}

.threed-cat-children {
    list-style: none;
    padding: 4px 0 4px 16px;
    margin: 0;
}

.threed-cat-child > a {
    font-size: 13px;
    padding: 8px 12px;
    font-weight: 400;
    color: #64748b;
}

.threed-cat-child.current > a {
    color: #1e3a5f;
    font-weight: 600;
    background: #f8fafc;
}

/* Content */
.threed-content {
    flex: 1;
    min-width: 0;
    color: #1e293b;
}

.threed-content h2 {
    color: #0f172a;
    font-size: 26px;
    font-weight: 700;
    margin: 0 0 14px;
    line-height: 1.3;
}

.threed-content h3 {
    color: #0f172a;
    font-size: 18px;
    font-weight: 600;
    margin: 28px 0 10px;
}

.threed-content p {
    color: #475569;
    line-height: 1.7;
    margin: 0 0 14px;
}

.threed-content ul {
    color: #475569;
    line-height: 1.8;
    margin: 0 0 16px 20px;
    padding: 0;
}

.threed-content li {
    margin-bottom: 6px;
}

.threed-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e2e8f0;
}

.threed-result-count {
    font-size: 14px;
    color: #64748b;
}

/* Grid */
.threed-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

/* Card */
.threed-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.25s ease;
}

.threed-card:hover {
    box-shadow: 0 10px 25px rgba(30, 58, 95, 0.12);
    transform: translateY(-3px);
}

.threed-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.threed-card-link:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
    border-radius: 8px;
}

.threed-card-image {
    position: relative;
    aspect-ratio: 1 / 1;
    background: #f8fafc;
    overflow: hidden;
    border: 1px solid #e2e8f0;
    border-radius: 8px 8px 0 0;
}

.threed-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.3s ease;
    padding: 8px;
    box-sizing: border-box;
}

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

.threed-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 14px;
    font-weight: 500;
}

.threed-card-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #1e3a5f;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    line-height: 1.2;
    z-index: 2;
    pointer-events: none;
}

.threed-card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(30, 58, 95, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 3;
    border-radius: 8px 8px 0 0;
}

.threed-card:hover .threed-card-overlay {
    opacity: 1;
}

.threed-card-overlay-icon {
    width: 40px;
    height: 40px;
    border: 2px solid #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.threed-card-overlay-icon::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 1.5px solid #fff;
    transform: rotate(45deg) skewY(-15deg);
    opacity: 0.9;
}

.threed-card-overlay-text {
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.threed-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: #1e3a5f;
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.threed-card-body {
    padding: 16px;
}

.threed-card-title {
    font-size: 15px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 10px 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.threed-card-params {
    font-size: 12px;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 12px;
}

.threed-param strong {
    color: #475569;
    font-weight: 600;
}

.threed-card-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #1e3a5f;
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
    padding-top: 10px;
    border-top: 1px solid #e2e8f0;
    transition: gap 0.15s ease;
}

.threed-card:hover .threed-card-btn {
    gap: 10px;
}

/* Pagination */
.threed-pagination {
    text-align: center;
    margin: 40px 0;
}

.threed-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    margin: 0 4px;
    border-radius: 6px;
    font-size: 14px;
    color: #475569;
    background: white;
    text-decoration: none;
    border: 1px solid #e2e8f0;
    transition: all 0.15s ease;
}

.threed-pagination .page-numbers:hover {
    border-color: #1e3a5f;
    color: #1e3a5f;
}

.threed-pagination .current {
    background: #1e3a5f;
    color: white;
    border-color: #1e3a5f;
    font-weight: 600;
}

.threed-pagination .dots {
    border: none;
    background: transparent;
    min-width: auto;
    padding: 0;
}

/* Empty State */
.threed-empty {
    text-align: center;
    padding: 60px 20px;
    color: #64748b;
}

.threed-empty p {
    margin-bottom: 20px;
    font-size: 15px;
}

/* Detail Section */
.threed-detail-section {
    background: white;
    border-radius: 8px;
    padding: 40px;
    margin-top: 40px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.threed-detail-title {
    font-size: 22px;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 20px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid #e2e8f0;
}

.threed-detail-content {
    font-size: 15px;
    line-height: 1.8;
    color: #475569;
}

.threed-detail-content p {
    margin-bottom: 16px;
}

.threed-detail-content ul,
.threed-detail-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.threed-detail-content li {
    margin-bottom: 8px;
}

/* CTA Section */
.threed-cta-section {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d5a8a 100%);
    border-radius: 12px;
    padding: 50px 40px;
    margin-top: 40px;
    text-align: center;
    color: white;
}

.threed-cta-inner {
    max-width: 600px;
    margin: 0 auto;
}

.threed-content .threed-cta-title {
    font-size: 26px;
    font-weight: 700;
    margin: 0 0 12px 0;
    color: #fff;
}

.threed-content .threed-cta-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
    line-height: 1.6;
}

.threed-cta-btn {
    background: white;
    color: #1e3a5f;
    border: none;
    padding: 14px 40px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.threed-cta-btn:hover {
    background: #f1f5f9;
    transform: translateY(-1px);
}

.threed-cta-btn:focus-visible {
    outline: 3px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* FAQ Section */
.threed-faq-section {
    background: white;
    padding: 60px 0;
    margin-top: 60px;
    border-top: 1px solid #e2e8f0;
}

.threed-faq-title {
    font-size: 26px;
    font-weight: 700;
    color: #1e293b;
    text-align: center;
    margin: 0 0 40px 0;
}

.threed-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.threed-faq-item {
    border-bottom: 1px solid #e2e8f0;
}

.threed-faq-item:first-child {
    border-top: 1px solid #e2e8f0;
}

.threed-faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    transition: background 0.15s ease;
}

.threed-faq-question:hover {
    background: #f8fafc;
}

.threed-faq-question:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: -2px;
}

.threed-faq-q-text {
    flex: 1;
    padding-right: 20px;
    line-height: 1.5;
}

.threed-faq-icon {
    width: 20px;
    height: 20px;
    position: relative;
    flex-shrink: 0;
}

.threed-faq-icon::before,
.threed-faq-icon::after {
    content: '';
    position: absolute;
    background: #1e3a5f;
    border-radius: 1px;
    transition: transform 0.2s ease;
}

.threed-faq-icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
}

.threed-faq-icon::after {
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

.threed-faq-item.active .threed-faq-icon::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
}

.threed-faq-answer {
    overflow: hidden;
}

.threed-faq-answer-inner {
    padding: 0 24px 24px;
    color: #475569;
    font-size: 14px;
    line-height: 1.8;
}

.threed-faq-answer-inner p {
    margin-bottom: 12px;
}

.threed-faq-answer-inner ul,
.threed-faq-answer-inner ol {
    margin-bottom: 12px;
    padding-left: 24px;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
    .threed-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .threed-main {
        padding: 20px 0 40px;
    }

    .threed-page-header {
        padding: 32px 24px;
        margin-bottom: 24px;
    }

    .threed-page-title {
        font-size: 24px;
    }

    .threed-page-intro {
        font-size: 14px;
    }

    .threed-layout {
        flex-direction: column;
        gap: 24px;
    }

    .threed-sidebar {
        width: 100%;
        position: static;
        order: -1;
    }

    .threed-sidebar-widget {
        padding: 16px 20px;
    }

    .threed-widget-title {
        font-size: 15px;
        margin-bottom: 12px;
        padding-bottom: 8px;
    }

    .threed-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .threed-card-title {
        font-size: 14px;
    }

    .threed-card-params {
        font-size: 11px;
    }

    .threed-card-body {
        padding: 12px;
    }

    .threed-detail-section {
        padding: 24px;
    }

    .threed-detail-title {
        font-size: 20px;
    }

    .threed-cta-section {
        padding: 36px 24px;
    }

    .threed-cta-title {
        font-size: 22px;
    }

    .threed-cta-desc {
        font-size: 14px;
    }

    .threed-faq-section {
        padding: 40px 0;
    }

    .threed-faq-title {
        font-size: 22px;
        margin-bottom: 28px;
    }

    .threed-faq-question {
        padding: 16px;
        font-size: 15px;
    }

    .threed-faq-answer-inner {
        padding: 0 16px 20px;
        font-size: 14px;
    }

    .threed-pagination .page-numbers {
        min-width: 36px;
        height: 36px;
        font-size: 13px;
        margin: 0 2px;
    }
}

@media (max-width: 480px) {
    .threed-grid {
        grid-template-columns: 1fr;
    }

    .threed-page-title {
        font-size: 20px;
    }

    .threed-quote-btn {
        width: 100%;
        text-align: center;
    }
}

/* ============================================================
   Single 3D Model Page
   ============================================================ */
.threed-single {
    max-width: 1200px;
    margin: 0 auto;
}

.threed-single-main {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 30px;
}

.threed-single-content {
    min-width: 0;
}

.threed-single-title {
    font-size: 28px;
    font-weight: 600;
    margin: 0 0 10px 0;
    color: #1a1a1a;
}

.threed-single-model {
    font-size: 14px;
    color: #888;
    margin-bottom: 20px;
}

.threed-viewer-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #f5f5f5;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 24px;
}

.threed-viewer-wrap iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

.threed-viewer-tip {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    pointer-events: none;
}

.threed-specs {
    background: #fafafa;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 24px;
}

.threed-specs h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 12px 0;
    color: #1a1a1a;
}

.threed-specs-row {
    display: flex;
    padding: 8px 0;
    border-bottom: 1px dashed #e5e5e5;
    font-size: 14px;
}

.threed-specs-row:last-child {
    border-bottom: 0;
}

.threed-specs-label {
    width: 120px;
    color: #888;
    flex-shrink: 0;
}

.threed-specs-value {
    color: #333;
    font-weight: 500;
}

.threed-cta-band {
    background: linear-gradient(135deg, #1e5aa9 0%, #2a7de1 100%);
    color: #fff;
    padding: 20px 24px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
}

.threed-cta-band p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

.threed-cta-band strong {
    display: block;
    font-size: 16px;
    margin-bottom: 4px;
}

.threed-cta-band a {
    background: #fff;
    color: #1e5aa9;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s;
}

.threed-cta-band a:hover {
    background: #f0f4fa;
}

.threed-detail-section {
    margin-bottom: 32px;
    line-height: 1.7;
    color: #444;
    font-size: 15px;
}

.threed-detail-section h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 16px 0;
    color: #1a1a1a;
}

.threed-detail-section h3 {
    font-size: 17px;
    font-weight: 600;
    margin: 20px 0 10px 0;
    color: #1a1a1a;
}

.threed-detail-section ul {
    padding-left: 20px;
    margin: 8px 0 16px 0;
}

.threed-detail-section li {
    margin-bottom: 6px;
}

.threed-faq-section {
    margin-bottom: 32px;
}

.threed-faq-section h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 16px 0;
    color: #1a1a1a;
}

.threed-faq-item {
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
}

.threed-faq-q {
    background: #fafafa;
    padding: 14px 18px;
    font-weight: 600;
    color: #1a1a1a;
    font-size: 15px;
}

.threed-faq-a {
    padding: 14px 18px;
    margin: 0;
    color: #555;
    font-size: 14px;
    line-height: 1.6;
}

.threed-related {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e5e5e5;
}

.threed-related h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 16px 0;
    color: #1a1a1a;
}

.threed-related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.threed-related-card {
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
    display: block;
}

.threed-related-card:hover {
    border-color: #2a7de1;
    transform: translateY(-2px);
}

.threed-related-img {
    aspect-ratio: 1;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 13px;
}

.threed-related-title {
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 500;
    text-align: center;
    color: #333;
}

/* ---- 单产品页移动端适配 ---- */
@media (max-width: 768px) {
    .threed-single-main {
        grid-template-columns: 1fr;
    }

    .threed-single-title {
        font-size: 22px;
    }

    .threed-viewer-wrap {
        aspect-ratio: 16 / 9;
    }

    .threed-cta-band {
        flex-direction: column;
        text-align: center;
    }

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

    .threed-detail-section {
        font-size: 14px;
    }

    .threed-detail-section h2 {
        font-size: 20px;
    }

    .threed-specs-label {
        width: 100px;
    }
}

@media (max-width: 480px) {
    .threed-related-grid {
        grid-template-columns: 1fr;
    }

    .threed-single-title {
        font-size: 20px;
    }

    .threed-viewer-tip {
        display: none;
    }

    .threed-specs-row {
        flex-direction: column;
        gap: 4px;
    }

    .threed-specs-label {
        width: auto;
        font-size: 12px;
    }
}

/* === 3D Single Page - B2B Style === */
.nrhs-main { padding: 32px 0 64px; background: #fff; }
.nrhs-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* 面包屑 */
.nrhs-breadcrumb { font-size: 13px; color: #6b7280; margin-bottom: 24px; line-height: 1.5; }
.nrhs-breadcrumb a { color: #6b7280; text-decoration: none; }
.nrhs-breadcrumb a:hover { color: #2563eb; }
.nrhs-breadcrumb .sep { margin: 0 8px; color: #d1d5db; }

/* 产品主区 */
.nrhs-product-hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; margin-bottom: 48px; align-items: start; }

/* 3D查看器 */
.nrhs-product-media { position: relative; }
.nrhs-viewer-box { position: relative; width: 100%; aspect-ratio: 1; background: #f3f4f6; border-radius: 8px; overflow: hidden; border: 1px solid #e5e7eb; }
.nrhs-product-fallback-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; z-index: 1; }
.nrhs-viewer-box iframe { position: relative; z-index: 2; width: 100%; height: 100%; border: 0; display: block; background: transparent; }
.nrhs-viewer-placeholder { display: flex; align-items: center; justify-content: center; height: 100%; color: #9ca3af; font-size: 16px; }
.nrhs-fullscreen-btn { display: inline-flex; align-items: center; gap: 8px; margin-top: 14px; padding: 10px 20px; font-size: 14px; font-weight: 600; color: #fff; background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%); border-radius: 6px; text-decoration: none; box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25); transition: all .2s ease; box-sizing: border-box; }
.nrhs-fullscreen-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35); text-decoration: none; }

/* 产品信息 */
.nrhs-product-category { display: inline-block; font-size: 13px; color: #2563eb; text-decoration: none; font-weight: 500; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.nrhs-product-category:hover { text-decoration: underline; }
.nrhs-product-title { font-size: 32px; font-weight: 700; color: #111827; line-height: 1.2; margin: 0 0 16px; }
.nrhs-product-desc { font-size: 15px; color: #4b5563; line-height: 1.6; margin: 0 0 24px; }

/* 参数列表 */
.nrhs-product-specs { list-style: none; padding: 0; margin: 0 0 28px; border-top: 1px solid #e5e7eb; }
.nrhs-product-specs li { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid #e5e7eb; font-size: 14px; }
.nrhs-product-specs .spec-label { color: #6b7280; }
.nrhs-product-specs .spec-value { color: #111827; font-weight: 500; }

/* CTA */
.nrhs-product-cta { display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; overflow: hidden; }
.nrhs-btn-primary { display: inline-flex; align-items: center; justify-content: center; padding: 12px 28px; background: #2563eb; color: #fff; text-decoration: none; border-radius: 6px; font-size: 15px; font-weight: 600; transition: background 0.2s; box-sizing: border-box; }
.nrhs-btn-primary:hover { background: #1d4ed8; color: #fff; }
.nrhs-btn-secondary { display: inline-flex; align-items: center; justify-content: center; padding: 12px 28px; background: #fff; color: #2563eb; text-decoration: none; border-radius: 6px; font-size: 15px; font-weight: 600; border: 1px solid #2563eb; transition: all 0.2s; box-sizing: border-box; }
.nrhs-btn-secondary:hover { background: #eff6ff; color: #1d4ed8; }

/* 优势点 */
.nrhs-product-benefits { display: flex; flex-wrap: wrap; gap: 16px; }
.benefit-item { display: flex; align-items: center; gap: 6px; font-size: 13px; color: #4b5563; }
.benefit-dot { color: #10b981; font-weight: 700; }

/* 分隔线 */
.nrhs-divider { border: 0; border-top: 1px solid #e5e7eb; margin: 48px 0; }

/* 详情全宽区 */
.nrhs-product-content { margin-bottom: 16px; }
.nrhs-section { margin-bottom: 48px; }
.nrhs-section-title { font-size: 24px; font-weight: 700; color: #111827; margin: 0 0 20px; }
.nrhs-section h3 { font-size: 18px; font-weight: 600; color: #1f2937; margin: 24px 0 12px; }
.nrhs-section p { font-size: 15px; color: #374151; line-height: 1.7; margin: 0 0 16px; }
.nrhs-section ul { padding-left: 20px; margin: 0 0 16px; }
.nrhs-section ul li { font-size: 15px; color: #374151; line-height: 1.7; margin-bottom: 8px; }

/* 规格表 */
.nrhs-spec-table-wrap { border: 1px solid #e5e7eb; border-radius: 6px; overflow: hidden; }
.nrhs-spec-table { width: 100%; border-collapse: collapse; }
.nrhs-spec-table th, .nrhs-spec-table td { padding: 12px 16px; text-align: left; font-size: 14px; border-bottom: 1px solid #e5e7eb; }
.nrhs-spec-table th { background: #f9fafb; font-weight: 600; color: #374151; width: 200px; }
.nrhs-spec-table td { color: #111827; }
.nrhs-spec-table tr:last-child th, .nrhs-spec-table tr:last-child td { border-bottom: 0; }

/* FAQ */
.nrhs-faq-list { border: 1px solid #e5e7eb; border-radius: 6px; overflow: hidden; }
.nrhs-faq-item { border-bottom: 1px solid #e5e7eb; }
.nrhs-faq-item:last-child { border-bottom: 0; }
.nrhs-faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; background: #fff; border: 0; cursor: pointer; font-size: 15px; font-weight: 600; color: #1f2937; text-align: left; transition: background 0.2s; }
.nrhs-faq-q:hover { background: #f9fafb; }
.nrhs-faq-icon { font-size: 20px; color: #6b7280; font-weight: 400; transition: transform 0.2s; min-width: 20px; text-align: center; }
.nrhs-faq-item.open .nrhs-faq-icon { transform: rotate(45deg); }
.nrhs-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.nrhs-faq-a p { padding: 0 20px 16px; color: #4b5563; font-size: 14px; line-height: 1.6; margin: 0; }

/* 相关产品 */
.nrhs-related-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.nrhs-related-header .nrhs-section-title { margin: 0; }
.nrhs-view-all { font-size: 14px; color: #2563eb; text-decoration: none; font-weight: 500; }
.nrhs-view-all:hover { text-decoration: underline; }
.nrhs-related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.nrhs-related-card { display: block; text-decoration: none; background: #fff; border: 1px solid #e5e7eb; border-radius: 8px; overflow: hidden; transition: box-shadow 0.2s, transform 0.2s; }
.nrhs-related-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.08); transform: translateY(-2px); }
.nrhs-related-img { aspect-ratio: 1; background: #f9fafb; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.nrhs-related-img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.nrhs-related-placeholder { color: #9ca3af; font-size: 14px; }
.nrhs-related-info { padding: 16px; }
.nrhs-related-title { font-size: 16px; font-weight: 600; color: #1f2937; margin: 0 0 4px; line-height: 1.4; }
.nrhs-related-model { font-size: 13px; color: #6b7280; }

/* 移动端 */
@media (max-width: 768px) {
    .nrhs-main { padding: 20px 0 40px; }
    .nrhs-product-hero { grid-template-columns: 1fr; gap: 32px; }
    .nrhs-product-title { font-size: 24px; }
    .nrhs-section-title { font-size: 20px; }
    .nrhs-related-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .nrhs-product-cta { flex-direction: column; }
    .nrhs-btn-primary, .nrhs-btn-secondary { flex: 1; width: 85%; }
    .nrhs-spec-table th { width: 140px; }
    .nrhs-fullscreen-btn { justify-content: center; width: 85%; padding: 12px 20px; font-size: 15px; }
}
@media (max-width: 480px) {
    .nrhs-related-grid { grid-template-columns: 1fr; }
    .nrhs-product-title { font-size: 22px; }
    .nrhs-spec-table th { width: 120px; font-size: 13px; }
    .nrhs-spec-table td { font-size: 13px; }
}