/* ========== 页面内容区 ========== */
.page-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #002D62;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========== 产品卡片网格 ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    place-content: center;
}

.product-card {
    background-color: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 45, 98, 0.12);
    border-color: transparent;
}

.product-image {
    height: 240px;
    overflow: hidden;
    background-color: #f5f7fa;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 24px;
    transition: transform 0.5s ease;
}

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

.product-info {
    padding: 24px;
}

.product-title {
    font-size: 20px;
    font-weight: 600;
    color: #002D62;
    margin-bottom: 12px;
    line-height: 1.4;
}

.product-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-link {
    font-size: 14px;
    font-weight: 500;
    color: #E63946;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.product-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

.product-card:hover .product-link::after {
    transform: translateX(4px);
}

/* ========== 行业卡片网格 ========== */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.industry-card {
    position: relative;
    height: 360px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}

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

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

.industry-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 45, 98, 0.9) 0%, rgba(0, 45, 98, 0.3) 60%, transparent 100%);
    transition: background 0.3s ease;
}

.industry-card:hover .industry-overlay {
    background: linear-gradient(to top, rgba(0, 45, 98, 0.95) 0%, rgba(0, 45, 98, 0.5) 100%);
}

.industry-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px;
    color: #fff;
}

.industry-title {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
}

.industry-desc {
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.7;
    margin-bottom: 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, margin-bottom 0.4s ease;
}

.industry-card:hover .industry-desc {
    max-height: 100px;
    margin-bottom: 20px;
}

.industry-link {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease 0.1s;
}

.industry-card:hover .industry-link {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 产品详情页 ========== */
.product-detail {
    padding: 60px 0;
}

.detail-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.detail-image {
    background-color: #f5f7fa;
    border-radius: 8px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.detail-image img {
    max-height: 360px;
    object-fit: contain;
}

.detail-info h1 {
    font-size: 36px;
    font-weight: 700;
    color: #002D62;
    margin-bottom: 20px;
    line-height: 1.3;
}

.detail-intro {
    font-size: 16px;
    color: #555;
    line-height: 1.9;
    margin-bottom: 32px;
}

.detail-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.detail-section {
    margin-bottom: 60px;
}

.detail-section h2 {
    font-size: 28px;
    font-weight: 600;
    color: #002D62;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #E63946;
    display: inline-block;
}

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

.feature-item {
    padding: 24px;
    background-color: #f5f7fa;
    border-radius: 8px;
    border-left: 4px solid #002D62;
}

.feature-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: #002D62;
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

.download-section {
    background-color: #f5f7fa;
    padding: 40px;
    border-radius: 8px;
}

.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid #e8e8e8;
}

.download-item:last-child {
    border-bottom: none;
}

.download-name {
    font-size: 15px;
    color: #333;
}

.download-btn {
    font-size: 14px;
    color: #E63946;
    font-weight: 500;
}

.download-btn:hover {
    text-decoration: underline;
}

/* ========== 联系表单页 ========== */
.contact-section {
    padding: 80px 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: #002D62;
    margin-bottom: 20px;
}

.contact-info p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 40px;
}

.info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.info-icon {
    width: 48px;
    height: 48px;
    background-color: #002D62;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
}

.info-content p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.contact-form {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 45, 98, 0.08);
}

.form-title {
    font-size: 24px;
    font-weight: 600;
    color: #002D62;
    margin-bottom: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
}

.form-group label .required {
    color: #E63946;
    margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background-color: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #002D62;
    box-shadow: 0 0 0 3px rgba(0, 45, 98, 0.1);
}

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

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #E63946;
}

.error-message {
    font-size: 12px;
    color: #E63946;
    margin-top: 6px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

.form-submit {
    margin-top: 32px;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    background-color: #002D62;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-submit:hover {
    background-color: #001f45;
}

/* ========== 关于我们页面 ========== */
.about-hero {
    text-align: center;
    padding: 80px 0 60px;
}

.about-hero h1 {
    font-size: 42px;
    font-weight: 700;
    color: #002D62;
    margin-bottom: 24px;
}

.about-hero p {
    font-size: 18px;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.9;
}

.about-stats {
    background-color: #002D62;
    padding: 60px 0;
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item .stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #E63946;
}

.stat-item .stat-label {
    font-size: 16px;
    opacity: 0.9;
}

.about-section {
    padding: 80px 0;
}

.about-section.alt {
    background-color: #f5f7fa;
}

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

.about-image {
    border-radius: 8px;
    overflow: hidden;
    height: 400px;
}

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

.about-text h2 {
    font-size: 32px;
    font-weight: 700;
    color: #002D62;
    margin-bottom: 24px;
}

.about-text p {
    font-size: 15px;
    color: #555;
    line-height: 1.9;
    margin-bottom: 16px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 40px;
}

.value-card {
    text-align: center;
    padding: 32px 24px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 45, 98, 0.06);
    transition: transform 0.3s ease;
}

.value-card:hover {
    transform: translateY(-6px);
}

.value-icon {
    width: 64px;
    height: 64px;
    background-color: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: #E63946;
}

.value-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #002D62;
    margin-bottom: 12px;
}

.value-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}


/* ========== 结果计数 ========== */
.results-count {
    padding: 24px 0;
    font-size: 14px;
    color: #666;
    border-bottom: 1px solid #e8e8e8;
    margin-bottom: 40px;
}

.results-count strong {
    color: #002D62;
    font-weight: 600;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .detail-hero {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .banner-title {
        font-size: 32px;
    }
    
    .banner {
        height: 360px;
    }
    
    .product-grid,
    .industry-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .page-section {
        padding: 48px 0;
    }
}