* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

.top-bar {
    background: #1a1a1a;
    color: #fff;
    padding: 8px 0;
    font-size: 14px;
}

.top-info {
    display: flex;
    gap: 30px;
    justify-content: flex-end;
}

.top-info span {
    display: flex;
    align-items: center;
    gap: 5px;
}

header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    background: #ff6b6b;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
}

.logo-text h1 {
    font-size: 24px;
    margin-bottom: 2px;
}

.logo-text p {
    font-size: 12px;
    opacity: 0.9;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 5px;
}

nav ul li {
    position: relative;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    padding: 10px 15px;
    display: block;
    transition: all 0.3s;
    border-radius: 5px;
}

nav ul li a:hover,
nav ul li a.active {
    background: rgba(255,255,255,0.1);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 180px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    border-radius: 5px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s;
    z-index: 1001;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    color: #333;
    padding: 12px 20px;
}

.dropdown-menu li a:hover {
    background: #f8f9fa;
    color: #2a5298;
}

.banner {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.banner-slider {
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.slide:nth-child(1) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.slide:nth-child(2) {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.slide:nth-child(3) {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.slide.active {
    opacity: 1;
}

.slide-content h2 {
    font-size: 56px;
    margin-bottom: 20px;
    animation: fadeInUp 1s;
}

.slide-content p {
    font-size: 24px;
    margin-bottom: 40px;
    animation: fadeInUp 1s 0.3s backwards;
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

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

.dot.active {
    background: white;
    transform: scale(1.2);
}

.slider-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}

.arrow {
    background: rgba(255,255,255,0.3);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
    pointer-events: all;
}

.arrow:hover {
    background: rgba(255,255,255,0.5);
}

.btn {
    display: inline-block;
    padding: 14px 40px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: #ff6b6b;
    color: white;
}

.btn-primary:hover {
    background: #ee5a52;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,107,107,0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
    margin-left: 15px;
}

.btn-secondary:hover {
    background: white;
    color: #2a5298;
}

.btn-outline {
    background: transparent;
    color: #2a5298;
    border-color: #2a5298;
}

.btn-outline:hover {
    background: #2a5298;
    color: white;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

.stats {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 60px 0;
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
}

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

section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 36px;
    color: #2a5298;
    margin-bottom: 10px;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
}

.about {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: start;
}

.about-image {
    position: relative;
}

.image-placeholder {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    padding: 80px 40px;
    text-align: center;
    color: white;
}

.placeholder-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

.about-text h3 {
    font-size: 24px;
    color: #2a5298;
    margin: 30px 0 15px;
}

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

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    text-align: justify;
}

.advantages {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 15px;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: white;
    border-radius: 5px;
}

.advantage-icon {
    color: #ff6b6b;
    font-weight: bold;
    font-size: 18px;
}

.products {
    background: white;
}

.product-categories {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 10px 25px;
    border: 2px solid #2a5298;
    background: transparent;
    color: #2a5298;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.category-btn:hover,
.category-btn.active {
    background: #2a5298;
    color: white;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.product-image {
    position: relative;
    height: 200px;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image .image-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image .placeholder-icon {
    font-size: 60px;
    margin: 0;
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #ff6b6b;
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 20px;
    color: #2a5298;
    margin-bottom: 10px;
}

.product-desc {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.product-features span {
    background: #e8f0fe;
    color: #2a5298;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
}

.view-more {
    text-align: center;
    margin-top: 50px;
}

.services {
    background: #f8f9fa;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-item {
    background: white;
    padding: 35px;
    border-radius: 10px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.service-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.service-item h3 {
    font-size: 22px;
    color: #2a5298;
    margin-bottom: 15px;
}

.service-item > p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.service-list li {
    padding: 8px 0;
    color: #666;
    font-size: 14px;
    position: relative;
    padding-left: 20px;
}

.service-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #ff6b6b;
    font-weight: bold;
}

.news {
    background: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.news-image {
    height: 200px;
    background: #f8f9fa;
}

.news-image .image-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-content {
    padding: 25px;
}

.news-date {
    color: #999;
    font-size: 14px;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
    line-height: 1.5;
}

.news-content p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.read-more {
    color: #2a5298;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.read-more:hover {
    color: #ff6b6b;
}

.partners {
    background: #f8f9fa;
    padding: 60px 0;
}

.partner-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    align-items: center;
}

.partner-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
}

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

.partner-placeholder {
    font-size: 20px;
    font-weight: bold;
    color: #2a5298;
}

.contact {
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s;
}

.info-card:hover {
    background: #e8f0fe;
}

.info-icon {
    font-size: 30px;
    min-width: 40px;
}

.info-content h4 {
    font-size: 16px;
    color: #2a5298;
    margin-bottom: 5px;
}

.info-content p {
    color: #666;
    font-size: 14px;
    margin: 3px 0;
}

.contact-form-wrapper {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.contact-form-wrapper h3 {
    font-size: 24px;
    color: #2a5298;
    margin-bottom: 10px;
}

.form-desc {
    color: #666;
    margin-bottom: 25px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2a5298;
    box-shadow: 0 0 0 3px rgba(42,82,152,0.1);
}

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

footer {
    background: #1e3c72;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

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

.footer-logo .logo-icon {
    width: 50px;
    height: 50px;
    font-size: 20px;
}

.footer-logo h3 {
    font-size: 20px;
}

.footer-section p {
    color: #b8c5d6;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.social-links a {
    color: #b8c5d6;
    text-decoration: none;
    padding: 8px 15px;
    border: 1px solid #b8c5d6;
    border-radius: 5px;
    transition: all 0.3s;
}

.social-links a:hover {
    background: white;
    color: #1e3c72;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: #b8c5d6;
    text-decoration: none;
    transition: color 0.3s;
}

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

.contact-list li {
    color: #b8c5d6;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-links {
    margin-bottom: 15px;
}

.footer-links a {
    color: #b8c5d6;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
}

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

.footer-links span {
    color: #b8c5d6;
}

.footer-bottom p {
    color: #b8c5d6;
    font-size: 14px;
}

.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #2a5298;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #1e3c72;
    transform: translateY(-5px);
}

.back-to-top span {
    font-size: 24px;
}

.online-service {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #ff6b6b;
    color: white;
    padding: 15px 25px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(255,107,107,0.4);
    transition: all 0.3s;
    z-index: 999;
}

.online-service:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(255,107,107,0.5);
}

.service-icon {
    font-size: 24px;
}

.service-text {
    font-weight: 500;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }
    
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px;
    }
    
    .slide-content h2 {
        font-size: 32px;
    }
    
    .slide-content p {
        font-size: 18px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .advantages {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .online-service {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
    }
    
    .back-to-top {
        bottom: 80px;
        right: 15px;
        width: 45px;
        height: 45px;
    }
}