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

/* 动画关键帧定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.5);
    }
    to {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes pulseBig {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(66, 153, 225, 0.4);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 0 0 30px 10px rgba(66, 153, 225, 0.2);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

@keyframes scaleX {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

@keyframes slideInFromLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(66, 153, 225, 0.5), 0 0 10px rgba(66, 153, 225, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(66, 153, 225, 0.8), 0 0 30px rgba(66, 153, 225, 0.5);
    }
}

@keyframes borderGlow {
    0%, 100% {
        border-color: rgba(66, 153, 225, 0.5);
    }
    50% {
        border-color: rgba(66, 153, 225, 1);
    }
}

@keyframes moveBackground {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes flipIn {
    from {
        transform: perspective(400px) rotateY(-90deg);
        opacity: 0;
    }
    to {
        transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}

@keyframes swing {
    0%, 100% {
        transform: rotate(-5deg);
    }
    50% {
        transform: rotate(5deg);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

@keyframes zoomPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 页面加载动画 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 50%, #4299e1 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: #fff;
}

.loader-bearings {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 30px;
}

.loader-bearing {
    width: 30px;
    height: 30px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-bearing:nth-child(2) {
    animation-delay: 0.2s;
}

.loader-bearing:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 产品详情模态框样式 */
.product-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.product-detail-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #fff;
    border-radius: 20px;
    max-width: 900px;
    max-height: 80vh;
    width: 90%;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8);
    transition: transform 0.4s ease;
}

.product-detail-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 30px;
    cursor: pointer;
    color: #333;
    z-index: 10;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: #4299e1;
    transform: rotate(90deg);
}

.modal-body {
    padding: 40px;
    max-height: 70vh;
    overflow-y: auto;
}

.product-detail-header {
    margin-bottom: 30px;
    text-align: center;
}

.product-detail-title {
    font-size: 28px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
}

.product-detail-code {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    color: #fff;
    border-radius: 25px;
    font-size: 14px;
    font-weight: bold;
    margin-right: 10px;
}

.product-detail-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
}

.product-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.product-detail-image {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.product-detail-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

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

.product-detail-info h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin: 20px 0 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid #4299e1;
}

.product-features {
    list-style: none;
    margin: 15px 0;
}

.product-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #4a5568;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4299e1;
    font-weight: bold;
}

.product-params {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin: 15px 0;
}

.product-params p {
    margin: 8px 0;
    color: #4a5568;
}

.product-application,
.product-material {
    line-height: 1.7;
    color: #4a5568;
    margin: 15px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-body {
        padding: 20px;
    }

    .product-detail-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-detail-title {
        font-size: 24px;
    }
}

/* 核心数据展示样式 */
.company-stats {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    position: relative;
    overflow: hidden;
}

.company-stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.company-stats .section-title {
    color: #fff;
}

.company-stats .section-title::after {
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.5));
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
    position: relative;
}

.stats-item {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s ease;
}

.stats-item:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.stats-icon {
    font-size: 40px;
    color: #4299e1;
    margin-bottom: 20px;
}

.stats-number {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 10px;
    text-shadow: 0 0 20px rgba(66, 153, 225, 0.5);
}

.stats-label {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
}

/* 荣誉资质样式 */
.honors-certificates {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
    position: relative;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.certificate-item {
    text-align: center;
    padding: 40px 30px;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.certificate-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4299e1, #3182ce, #4299e1);
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
}

.certificate-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.certificate-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: #fff;
    font-size: 32px;
    transition: all 0.4s ease;
}

.certificate-item:hover .certificate-icon {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 10px 30px rgba(66, 153, 225, 0.4);
}

.certificate-item h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 10px;
}

.certificate-item p {
    color: #4a5568;
    font-size: 14px;
    line-height: 1.6;
}

/* 研发实力样式 */
.rd-strength {
    padding: 100px 0;
    background: #fff;
    position: relative;
}

.rd-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 40px;
}

.rd-text h3 {
    font-size: 28px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 20px;
}

.rd-text > p {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.8;
    margin-bottom: 30px;
}

.rd-features {
    list-style: none;
}

.rd-features li {
    padding: 12px 0;
    font-size: 16px;
    color: #4a5568;
    display: flex;
    align-items: center;
    gap: 15px;
}

.rd-features li i {
    color: #4299e1;
    font-size: 20px;
}

.rd-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.rd-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.3) 0%, transparent 100%);
    z-index: 1;
}

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

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

/* 生产能力样式 */
.production-capacity {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
}

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

.capacity-item {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.capacity-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.capacity-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.capacity-header i {
    font-size: 36px;
    color: #4299e1;
}

.capacity-header h3 {
    font-size: 22px;
    font-weight: bold;
    color: #1a365d;
}

.capacity-item p {
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 20px;
}

.capacity-bar {
    height: 10px;
    background: #e2e8f0;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 10px;
}

.capacity-progress {
    height: 100%;
    background: linear-gradient(90deg, #4299e1, #3182ce);
    border-radius: 5px;
    animation: shimmer 2s infinite;
    background-size: 200% 100%;
}

.capacity-percent {
    font-size: 14px;
    font-weight: bold;
    color: #4299e1;
}

/* 客户案例样式 */
.case-studies {
    padding: 100px 0;
    background: #fff;
}

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

.case-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #edf2f7 100%);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.case-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.case-item:hover::before {
    opacity: 1;
}

.case-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.case-logo {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: #fff;
    font-size: 40px;
    transition: all 0.4s ease;
}

.case-item:hover .case-logo {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
}

.case-item h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
    position: relative;
}

.case-item > p {
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 20px;
    position: relative;
}

.case-tags {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

.case-tags span {
    padding: 6px 16px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

/* 企业愿景样式 */
.company-vision {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    position: relative;
    overflow: hidden;
}

.company-vision::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
}

.company-vision .section-title {
    color: #fff;
}

.company-vision .section-title::after {
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.5));
}

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

.vision-item {
    text-align: center;
    padding: 50px 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s ease;
}

.vision-item:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.vision-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    color: #fff;
    font-size: 40px;
    transition: all 0.4s ease;
}

.vision-item:hover .vision-icon {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 10px 40px rgba(66, 153, 225, 0.5);
}

.vision-item h3 {
    font-size: 26px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 15px;
}

.vision-item p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

/* 响应式设计 - 新增模块 */
@media (max-width: 768px) {
    .rd-content {
        grid-template-columns: 1fr;
    }

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

    .stats-number {
        font-size: 36px;
    }

    .vision-content {
        grid-template-columns: 1fr;
    }
}

.loader-text {
    font-size: 18px;
    font-weight: bold;
    animation: pulse 1.5s ease-in-out infinite;
}

/* 回到顶部按钮动画 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s ease;
    z-index: 999;
    box-shadow: 0 4px 15px rgba(66, 153, 225, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 25px rgba(66, 153, 225, 0.6);
}

.back-to-top:active {
    transform: scale(0.95);
}

/* 3D悬浮卡片效果 */
.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d:hover {
    transform: rotateX(5deg) rotateY(5deg) translateZ(10px);
}

/* 光晕悬浮效果 */
.hover-glow {
    transition: all 0.4s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(66, 153, 225, 0.5), 0 0 60px rgba(66, 153, 225, 0.3);
}

/* 文字渐变动画 */
.text-gradient-animate {
    background: linear-gradient(90deg, #4299e1, #3182ce, #4299e1, #3182ce);
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: moveBackground 4s ease infinite;
}

/* 边框流光效果 */
.border-flow {
    position: relative;
}

.border-flow::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(90deg, #4299e1, #3182ce, #4299e1, #3182ce);
    background-size: 300% 100%;
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
    animation: moveBackground 3s ease infinite;
}

.border-flow:hover::before {
    opacity: 1;
}

/* 背景浮动动画元素 */
.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.floating-shape:nth-child(1) {
    top: 20%;
    left: 10%;
    width: 80px;
    height: 80px;
    background: #4299e1;
    border-radius: 50%;
    animation-delay: 0s;
}

.floating-shape:nth-child(2) {
    top: 60%;
    right: 15%;
    width: 60px;
    height: 60px;
    background: #3182ce;
    border-radius: 50%;
    animation-delay: 2s;
}

.floating-shape:nth-child(3) {
    bottom: 20%;
    left: 20%;
    width: 100px;
    height: 100px;
    background: #1a365d;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    animation-delay: 4s;
}

/* 波浪动画 */
.wave-animation {
    position: relative;
    overflow: hidden;
}

.wave-animation::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: wave 3s ease-in-out infinite;
}

@keyframes wave {
    0% {
        left: -100%;
    }
    50%, 100% {
        left: 100%;
    }
}

/* 箭头弹跳动画 */
.bounce-arrow {
    animation: bounceArrow 2s ease infinite;
}

@keyframes bounceArrow {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* 数字计数动画 */
.count-up {
    transition: all 0.3s ease;
}

.count-up:hover {
    transform: scale(1.1);
    color: #4299e1;
}

/* 进度条动画 */
.progress-bar {
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
    background-size: 200% 100%;
}

/* 图片蒙版动画 */
.image-mask {
    position: relative;
    overflow: hidden;
}

.image-mask::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.3) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.image-mask:hover::before {
    opacity: 1;
}

/* 打字机效果 */
.typewriter {
    overflow: hidden;
    white-space: nowrap;
    animation: typing 3s steps(30, end);
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

/* 闪烁效果 */
.blink {
    animation: blink 1s step-start infinite;
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}

/* 颜色渐变动画 */
.color-cycle {
    animation: colorCycle 5s ease infinite;
}

@keyframes colorCycle {
    0% {
        color: #4299e1;
    }
    25% {
        color: #3182ce;
    }
    50% {
        color: #2c5282;
    }
    75% {
        color: #4299e1;
    }
    100% {
        color: #4299e1;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #4299e1, #3182ce);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #3182ce, #2c5282);
}

body {
    font-family: 'Arial', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 标题样式 */
.section-title {
    font-size: 28px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #4299e1, #3182ce);
    margin: 10px auto 0;
    transform: scaleX(0);
    animation: scaleX 0.6s ease 0.3s forwards;
}

/* 导航栏样式 */
.header {
    background-color: #1a365d;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    background-color: rgba(26, 54, 93, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    transition: padding 0.3s ease;
}

.header.scrolled .nav-container {
    padding: 15px 0;
}

.logo {
    position: relative;
}

.logo a {
    color: #fff;
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.logo a:hover {
    transform: scale(1.05);
    text-shadow: 0 0 20px rgba(66, 153, 225, 0.5);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 0;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #4299e1, #3182ce);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: #4299e1;
    text-shadow: 0 0 10px rgba(66, 153, 225, 0.3);
}

.mobile-menu-btn {
    display: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.mobile-menu-btn:hover {
    transform: scale(1.1);
    color: #4299e1;
}

/* Banner样式 */
.banner {
    background-image: linear-gradient(135deg, rgba(26, 54, 93, 0.85) 0%, rgba(66, 153, 225, 0.75) 100%),
                      url('../images/common/banner.png');
    background-size: cover;
    background-position: center;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(66, 153, 225, 0.1) 25%, transparent 25%),
                linear-gradient(-45deg, rgba(66, 153, 225, 0.1) 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, rgba(66, 153, 225, 0.1) 75%),
                linear-gradient(-45deg, transparent 75%, rgba(66, 153, 225, 0.1) 75%);
    background-size: 40px 40px;
    background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
    animation: moveGrid 20s linear infinite;
}

@keyframes moveGrid {
    0% { transform: translate(0, 0); }
    100% { transform: translate(40px, 40px); }
}

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

.banner-content h1 {
    font-size: 56px;
    font-weight: bold;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1s ease 0.2s forwards;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-content p {
    font-size: 22px;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1s ease 0.4s forwards;
}

.banner-content .btn-primary {
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1s ease 0.6s forwards;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.4s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(66, 153, 225, 0.4);
}

/* 核心产品速览样式 */
.product-overview {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
    position: relative;
}

.product-overview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, rgba(66, 153, 225, 0.05), transparent);
}

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

.product-card {
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    padding: 25px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
}

.product-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4299e1, #3182ce, #4299e1);
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.product-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-card__code {
    display: inline-block;
    padding: 6px 18px;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.product-card:hover .product-card__code {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(26, 54, 93, 0.3);
}

.product-card__title {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.product-card:hover .product-card__title {
    color: #4299e1;
}

.product-card__tag {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e0 100%);
    color: #4a5568;
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.product-card:hover .product-card__tag {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
}

.product-card__desc {
    color: #4a5568;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-card__image {
    margin-bottom: 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.product-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.5s ease;
}

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

.product-card__link {
    display: inline-block;
    color: #4299e1;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    position: relative;
}

.product-card__link::after {
    content: '→';
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.product-card__link:hover {
    color: #3182ce;
}

.product-card__link:hover::after {
    transform: translateX(5px);
}

.product-card__application {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e2e8f0;
}

.product-card__application h4 {
    font-size: 14px;
    color: #4a5568;
    margin-bottom: 5px;
}

.product-card__application p {
    font-size: 14px;
    color: #718096;
}

.product-card__detail-btn {
    margin-top: 20px;
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: #4a5568;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-card__detail-btn:hover {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    border-color: #4299e1;
}

/* 企业优势样式 */
.company-advantages {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
    position: relative;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-item {
    text-align: center;
    padding: 40px 30px;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
}

.advantage-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(66, 153, 225, 0.1) 0%, transparent 70%);
    transform: scale(0);
    transition: transform 0.5s ease;
}

.advantage-item:hover::before {
    transform: scale(1);
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.advantage-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: #fff;
    font-size: 36px;
    transition: all 0.4s ease;
    position: relative;
}

.advantage-icon::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border: 3px solid rgba(66, 153, 225, 0.3);
    border-radius: 50%;
    transform: scale(0.8);
    opacity: 0;
    transition: all 0.4s ease;
}

.advantage-item:hover .advantage-icon::after {
    transform: scale(1);
    opacity: 1;
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.1) rotate(10deg);
}

.advantage-item h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.advantage-item:hover h3 {
    color: #4299e1;
}

.advantage-item p {
    color: #4a5568;
    line-height: 1.7;
}

/* 行业应用场景样式 */
.industry-applications {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 50%, #f8f9fa 100%);
    position: relative;
}

.industry-applications::before,
.industry-applications::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.1) 0%, transparent 70%);
}

.industry-applications::before {
    top: -150px;
    left: -150px;
}

.industry-applications::after {
    bottom: -150px;
    right: -150px;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.application-item {
    text-align: center;
    padding: 35px 25px;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
}

.application-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.application-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4299e1, #3182ce);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.application-item:hover::before {
    transform: scaleX(1);
}

.application-item:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.application-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #fff;
    font-size: 28px;
    transition: all 0.4s ease;
}

.application-item:hover .application-icon {
    transform: scale(1.15) rotate(5deg);
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
}

.application-item h3 {
    font-size: 17px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.application-item:hover h3 {
    color: #4299e1;
}

.application-item p {
    font-size: 14px;
    color: #4a5568;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(180deg, #1a365d 0%, #0f2744 100%);
    color: #fff;
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
}

.footer-info h3 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.footer-info h3:hover {
    color: #4299e1;
    text-shadow: 0 0 20px rgba(66, 153, 225, 0.5);
}

.footer-info p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.footer-contact p:hover {
    color: #4299e1;
    transform: translateX(5px);
}

.footer-links h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: #e2e8f0;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: #4299e1;
    transform: translateX(5px);
}

.footer-social h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 20px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: inline-flex;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.social-icons a::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: #4299e1;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.4s ease;
}

.social-icons a:hover::before {
    width: 100%;
    height: 100%;
}

.social-icons a:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 20px rgba(66, 153, 225, 0.4);
}

.social-icons a i {
    position: relative;
    z-index: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: #e2e8f0;
    position: relative;
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 100%, rgba(66, 153, 225, 0.1), transparent 70%);
}

.page-header h1 {
    font-size: 42px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.page-header p {
    font-size: 18px;
    color: #4a5568;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

/* 产品中心样式 */
.product-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

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

.product-sidebar {
    flex: 0 0 280px;
    background: linear-gradient(180deg, #f7fafc 0%, #edf2f7 100%);
    padding: 30px;
    border-radius: 16px;
    position: sticky;
    top: 120px;
    height: fit-content;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.product-sidebar:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.product-sidebar h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e2e8f0;
}

.product-category {
    list-style: none;
}

.product-category li {
    margin-bottom: 8px;
}

.product-category a {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: #4a5568;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-category a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #4299e1;
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.product-category a:hover::before,
.product-category a.active::before {
    transform: scaleY(1);
}

.product-category a:hover {
    background-color: rgba(66, 153, 225, 0.1);
    color: #1a365d;
    transform: translateX(5px);
}

.product-main {
    flex: 1;
}

/* 产品轮播样式 */
.product-carousel {
    position: relative;
    margin-bottom: 50px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.carousel-container {
    position: relative;
    height: 450px;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.carousel-slide.active {
    opacity: 1;
}

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

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.carousel-prev:hover,
.carousel-next:hover {
    background-color: #fff;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.carousel-prev {
    left: 25px;
}

.carousel-next {
    right: 25px;
}

.carousel-indicators {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
}

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

.indicator:hover {
    background-color: rgba(255, 255, 255, 0.8);
}

.indicator.active {
    background-color: #fff;
    transform: scale(1.2);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* 轴承百科样式 */
.knowledge-intro {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #fff 100%);
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro-content p {
    margin-bottom: 20px;
    line-height: 1.9;
    color: #4a5568;
    font-size: 17px;
}

.knowledge-table {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.table-responsive {
    overflow-x: auto;
}

.bearing-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    overflow: hidden;
}

.bearing-table th,
.bearing-table td {
    padding: 15px 18px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.bearing-table th {
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    color: #fff;
    font-weight: bold;
    font-size: 15px;
}

.bearing-table tr {
    transition: all 0.3s ease;
}

.bearing-table tbody tr:hover {
    background-color: rgba(66, 153, 225, 0.05);
    transform: scale(1.01);
}

.bearing-table tbody tr:nth-child(even) {
    background-color: #f8f9fa;
}

.bearing-table tbody tr:nth-child(even):hover {
    background-color: rgba(66, 153, 225, 0.08);
}

.knowledge-extension {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
}

.extension-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.extension-item {
    background-color: #fff;
    padding: 35px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(50px);
}

.extension-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.extension-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.extension-item h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e2e8f0;
    position: relative;
}

.extension-item h3::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #4299e1, #3182ce);
}

.extension-item ul {
    list-style: none;
}

.extension-item li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
    transition: all 0.3s ease;
}

.extension-item li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4299e1;
    font-weight: bold;
    transition: all 0.3s ease;
}

.extension-item li:hover {
    color: #1a365d;
    transform: translateX(5px);
}

.extension-item li:hover::before {
    color: #3182ce;
    transform: scale(1.2);
}

.knowledge-visual {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.visual-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.visual-item {
    display: flex;
    gap: 25px;
    background-color: #fff;
    padding: 35px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateX(-50px);
}

.visual-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.visual-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.visual-image {
    flex: 0 0 220px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.visual-content h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.visual-item:hover .visual-content h3 {
    color: #4299e1;
}

.visual-content p {
    color: #4a5568;
    line-height: 1.7;
}

/* 企业实力样式 */
.company-intro {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.intro-content {
    max-width: 1000px;
    margin: 0 auto;
}

.company-history {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
    position: relative;
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #4299e1, #3182ce);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    width: 50%;
    opacity: 0;
    transform: translateX(-30px);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 50px;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 50px;
    transform: translateX(30px);
}

.timeline-item:nth-child(even).visible {
    transform: translateX(0);
}

.timeline-year {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    border-radius: 25px;
    font-size: 15px;
    font-weight: bold;
    margin-bottom: 15px;
    box-shadow: 0 4px 15px rgba(66, 153, 225, 0.3);
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-year {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(66, 153, 225, 0.4);
}

.timeline-content {
    background-color: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-content {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.timeline-content h3 {
    font-size: 18px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 10px;
}

.timeline-content p {
    color: #4a5568;
    line-height: 1.6;
}

.production-strength {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.strength-item {
    text-align: center;
    padding: 40px 30px;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(50px);
}

.strength-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.strength-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.strength-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: #fff;
    font-size: 36px;
    transition: all 0.4s ease;
}

.strength-item:hover .strength-icon {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
}

.strength-item h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
}

.strength-item p {
    color: #4a5568;
    line-height: 1.7;
}

.product-gallery {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.gallery-item {
    background-color: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    opacity: 0;
    transform: scale(0.9);
}

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

.gallery-item:hover {
    transform: scale(1.05) translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.gallery-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    cursor: pointer;
    transition: all 0.5s ease;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.1);
}

.gallery-item p {
    padding: 20px;
    text-align: center;
    font-weight: bold;
    color: #1a365d;
    transition: color 0.3s ease;
}

.gallery-item:hover p {
    color: #4299e1;
}

.cooperation {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.client-item {
    text-align: center;
    padding: 40px 25px;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(30px);
}

.client-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.client-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.client-item i {
    font-size: 52px;
    color: #4299e1;
    margin-bottom: 20px;
    transition: all 0.4s ease;
}

.client-item:hover i {
    transform: scale(1.2);
    color: #3182ce;
}

.client-item p {
    font-weight: bold;
    color: #1a365d;
}

/* 联系我们样式 */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px;
}

.contact-info h2,
.contact-form h2 {
    text-align: left;
}

.contact-info h2::after,
.contact-form h2::after {
    margin: 10px 0 0;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.info-item:hover {
    transform: translateX(10px);
}

.info-icon {
    flex: 0 0 55px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4299e1;
    font-size: 22px;
    transition: all 0.3s ease;
}

.info-item:hover .info-icon {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    transform: scale(1.1);
}

.info-text h3 {
    font-size: 17px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 8px;
}

.info-text p {
    color: #4a5568;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #1a365d;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background-color: #f7fafc;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4299e1;
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(66, 153, 225, 0.1);
}

.online-consultation {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #edf2f7 100%);
}

.consultation-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.consultation-content > p {
    margin-bottom: 50px;
    line-height: 1.9;
    color: #4a5568;
    font-size: 17px;
}

.consultation-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 30px;
}

.option-item {
    padding: 40px 30px;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(50px);
}

.option-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.option-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.option-item i {
    font-size: 52px;
    color: #4299e1;
    margin-bottom: 25px;
    transition: all 0.4s ease;
}

.option-item:hover i {
    transform: scale(1.2) rotate(10deg);
}

.option-item h3 {
    font-size: 19px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 12px;
}

.option-item p {
    color: #4a5568;
    margin-bottom: 0;
}

.message-board {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.message-board form {
    max-width: 800px;
    margin: 0 auto;
}

/* 图片放大预览样式 */
.image-preview {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
}

.image-preview.active {
    opacity: 1;
    visibility: visible;
}

.image-preview__content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    transform: scale(0.8);
    transition: transform 0.4s ease;
}

.image-preview.active .image-preview__content {
    transform: scale(1);
}

.image-preview__img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-preview__close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 45px;
    height: 45px;
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.image-preview__close:hover {
    background-color: rgba(255, 255, 255, 0.4);
    transform: rotate(90deg);
}

/* 动画关键帧 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleX {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #4299e1, #3182ce);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #3182ce, #2c5282);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .banner-content h1 {
        font-size: 44px;
    }

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

    .product-sidebar {
        flex: 1;
        position: static;
    }

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

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 80px !important;
        padding-right: 0 !important;
        text-align: left !important;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: rgba(26, 54, 93, 0.98);
        padding: 25px;
        flex-direction: column;
        gap: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(10px);
    }

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

    .mobile-menu-btn {
        display: block;
    }

    .banner-content h1 {
        font-size: 36px;
    }

    .banner-content p {
        font-size: 17px;
    }

    .page-header {
        padding: 120px 0 60px;
    }

    .page-header h1 {
        font-size: 32px;
    }

    .section-title {
        font-size: 24px;
    }

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

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

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-contact p {
        justify-content: center;
    }

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

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

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

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

    .consultation-options {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .banner-content h1 {
        font-size: 28px;
    }

    .banner-content p {
        font-size: 15px;
    }

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

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

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

    .carousel-container {
        height: 280px;
    }

    .visual-item {
        flex-direction: column;
        text-align: center;
    }

    .visual-image {
        flex: 1;
        width: 100%;
    }

    .page-header h1 {
        font-size: 28px;
    }

    .page-header p {
        font-size: 16px;
    }
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #1a365d;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: #4299e1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 产品详情模态框样式 */
.product-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.product-detail-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #fff;
    border-radius: 20px;
    max-width: 900px;
    max-height: 80vh;
    width: 90%;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8);
    transition: transform 0.4s ease;
}

.product-detail-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 30px;
    cursor: pointer;
    color: #333;
    z-index: 10;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: #4299e1;
    transform: rotate(90deg);
}

.modal-body {
    padding: 40px;
    max-height: 70vh;
    overflow-y: auto;
}

.product-detail-header {
    margin-bottom: 30px;
    text-align: center;
}

.product-detail-title {
    font-size: 28px;
    font-weight: bold;
    color: #1a365d;
    margin-bottom: 15px;
}

.product-detail-code {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
    color: #fff;
    border-radius: 25px;
    font-size: 14px;
    font-weight: bold;
    margin-right: 10px;
}

.product-detail-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
}

.product-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.product-detail-image {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.product-detail-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

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

.product-detail-info h3 {
    font-size: 20px;
    font-weight: bold;
    color: #1a365d;
    margin: 20px 0 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid #4299e1;
}

.product-features {
    list-style: none;
    margin: 15px 0;
}

.product-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #4a5568;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4299e1;
    font-weight: bold;
}

.product-params {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin: 15px 0;
}

.product-params p {
    margin: 8px 0;
    color: #4a5568;
}

.product-application,
.product-material {
    line-height: 1.7;
    color: #4a5568;
    margin: 15px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-body {
        padding: 20px;
    }

    .product-detail-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-detail-title {
        font-size: 24px;
    }
}