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

/* 兼容性修复 */
img {
    max-width: 100%;
    height: auto;
}

/* 确保浮动元素正常工作 */
.hero-visual {
    position: relative;
    height: 400px;
    overflow: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo img {
    height: 40px !important;
    width: auto !important;
    max-width: 200px !important;
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding-bottom: 5px;
}

.nav-menu a:hover {
    color: #2563eb;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: #2563eb;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #374151;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.hero-content h2 {
    font-size: 1.6rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.3;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: white;
    color: #2563eb;
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
}

.hero-visual {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: 1.25rem 1rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: float 6s ease-in-out infinite;
    min-width: 80px;
    z-index: 10;
}

.floating-card:nth-child(1) {
    top: 15%;
    left: 5%;
    animation-delay: 0s;
}

.floating-card:nth-child(2) {
    top: 35%;
    right: 15%;
    animation-delay: 1s;
}

.floating-card:nth-child(3) {
    top: 55%;
    left: 25%;
    animation-delay: 2s;
}

.floating-card:nth-child(4) {
    top: 75%;
    right: 25%;
    animation-delay: 3s;
}

.floating-card:nth-child(5) {
    bottom: 15%;
    left: 10%;
    animation-delay: 4s;
}

.floating-card:nth-child(6) {
    bottom: 35%;
    right: 5%;
    animation-delay: 5s;
}

.floating-card:nth-child(7) {
    bottom: 55%;
    left: 45%;
    animation-delay: 6s;
}

.floating-card i {
    font-size: 1.5rem;
    color: white;
}

.floating-card span {
    color: white;
    font-weight: 500;
    font-size: 0.85rem;
    text-align: center;
    line-height: 1.2;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@-webkit-keyframes float {
    0%, 100% { -webkit-transform: translateY(0px); transform: translateY(0px); }
    50% { -webkit-transform: translateY(-20px); transform: translateY(-20px); }
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-text ul {
    list-style: none;
    margin-top: 1rem;
}

.about-text li {
    color: #6b7280;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.about-text li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 100%;
}

.stat-item {
    text-align: center;
    padding: 2.5rem 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 120px;
}

.stat-item h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-item p {
    color: #6b7280;
    font-weight: 500;
    font-size: 0.9rem;
    line-height: 1.3;
    word-break: keep-all;
    white-space: nowrap;
}

/* 业务服务 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 1.5rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.service-card p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service-card ul {
    list-style: none;
}

.service-card li {
    color: #6b7280;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.service-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

/* 产品展示 */
.products {
    background: #f8fafc;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image i {
    font-size: 4rem;
    color: white;
}

.product-content {
    padding: 2rem;
}

.product-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.product-content p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.product-features {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.feature-tag {
    background: #dbeafe;
    color: #2563eb;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 联系我们 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.contact-item i {
    font-size: 1.5rem;
    color: #2563eb;
    width: 40px;
    text-align: center;
}

.contact-item h4 {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: #6b7280;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.6;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
}

.footer-bottom p {
    color: #9ca3af;
    margin-bottom: 0.5rem;
}

.footer-bottom a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-logo img {
        height: 32px;
        max-width: 150px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2rem;
        line-height: 1.3;
    }

    .hero-content h2 {
        font-size: 1rem;
        line-height: 1.4;
    }

    .hero-visual {
        height: 300px;
    }
    
    .floating-card {
        padding: 1rem 0.75rem;
        min-width: 70px;
    }
    
    .floating-card i {
        font-size: 1.25rem;
    }
    
    .floating-card span {
        font-size: 0.75rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-item {
        padding: 2rem 0.75rem;
        min-height: 100px;
    }
    
    .stat-item h3 {
        font-size: 1.75rem;
    }
    
    .stat-item p {
        font-size: 0.85rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .hero-buttons {
        justify-content: center;
    }

    .floating-card {
        padding: 1rem;
    }

    .floating-card i {
        font-size: 1.5rem;
    }

    .floating-card span {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1.5rem 0.5rem;
        min-height: 80px;
    }
    
    .stat-item h3 {
        font-size: 1.5rem;
    }
    
    .stat-item p {
        font-size: 0.8rem;
    }

    .hero-content h1 {
        font-size: 1.5rem;
        line-height: 1.4;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .service-card,
    .product-content,
    .contact-form {
        padding: 1.5rem;
    }
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    margin: 5% auto;
    padding: 20px;
    width: 90%;
    max-width: 300px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

.close {
    position: absolute;
    right: 15px;
    top: 10px;
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2001;
    transition: color 0.3s ease;
}

.close:hover,
.close:focus {
    color: #000;
}

#modalImage {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    margin-bottom: 15px;
}

.modal-text {
    text-align: center;
    padding: 10px 0;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .modal-content {
        margin: 10% auto;
        width: 95%;
        padding: 15px;
    }
    
    .close {
        right: 10px;
        top: 5px;
        font-size: 24px;
    }
    
    .modal-text p {
        font-size: 12px;
    }
}