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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

ul {
    list-style: none;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    height: 80px;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.logo h1 {
    font-size: 28px;
    color: #1a5fb4;
    font-weight: bold;
}

.nav-list {
    display: flex;
    gap: 35px;
}

.nav-list li a {
    font-size: 16px;
    color: #333;
    padding: 10px 0;
    position: relative;
    font-weight: 500;
}

.nav-list li a:hover,
.nav-list li a.active {
    color: #1a5fb4;
}

.nav-list li a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a5fb4;
    transition: width 0.3s;
}

.nav-list li a:hover::after,
.nav-list li a.active::after {
    width: 100%;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #e74c3c;
    font-size: 18px;
    font-weight: bold;
    background: #fef5f5;
    padding: 8px 15px;
    border-radius: 25px;
}

.header-phone i {
    font-size: 18px;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
    padding: 10px;
}

.banner {
    position: relative;
    height: 500px;
    overflow: hidden;
    margin-top: 80px;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 10;
}

.slide-content h2 {
    font-size: 52px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 3px;
}

.slide-content p {
    font-size: 26px;
    letter-spacing: 4px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.banner-nav {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 20;
}

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

.nav-dot.active {
    background: #fff;
    transform: scale(1.2);
}

.nav-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.banner-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 20;
    pointer-events: none;
}

.banner-arrows span {
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.3s;
    pointer-events: auto;
}

.banner-arrows span:hover {
    background: rgba(26, 95, 180, 0.8);
}

.banner-arrows i {
    font-size: 20px;
}

.services {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.section-title h2 {
    font-size: 36px;
    color: #333;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #1a5fb4;
}

.section-title p {
    font-size: 16px;
    color: #888;
    letter-spacing: 3px;
    margin-top: 15px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-item {
    background: #fff;
    padding: 40px 20px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #1a5fb4, #3498db);
    transform: scaleX(0);
    transition: transform 0.3s;
}

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

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #1a5fb4, #3498db);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon i {
    font-size: 36px;
    color: #fff;
}

.service-item h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.service-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.about {
    padding: 80px 0;
    background: #fff;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-item {
    margin-bottom: 25px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #1a5fb4;
    transition: all 0.3s;
}

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

.about-item h3 {
    font-size: 20px;
    color: #1a5fb4;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.about-item h3 i {
    font-size: 24px;
}

.about-item p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 8px;
}

.about-item p:last-child {
    margin-bottom: 0;
}

.news {
    padding: 80px 0;
    background: #f8f9fa;
}

.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    margin-bottom: 20px;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.news-date {
    width: 100px;
    background: linear-gradient(135deg, #1a5fb4, #3498db);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    flex-shrink: 0;
}

.news-date .day {
    font-size: 36px;
    font-weight: bold;
    line-height: 1;
}

.news-date .month {
    font-size: 14px;
    margin-top: 8px;
}

.news-content {
    flex: 1;
    padding: 25px;
}

.news-content h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 12px;
    line-height: 1.4;
    font-weight: 600;
}

.news-content h3:hover {
    color: #1a5fb4;
}

.news-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-views {
    display: inline-block;
    margin-top: 15px;
    font-size: 14px;
    color: #999;
}

.news-views i {
    margin-right: 5px;
}

.contact {
    padding: 60px 0;
    background: linear-gradient(135deg, #1a5fb4, #3498db);
}

.contact-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.contact-phone {
    color: #fff;
    font-size: 32px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-phone i {
    font-size: 36px;
}

.phone-info {
    display: flex;
    flex-direction: column;
}

.phone-label {
    font-size: 14px;
    font-weight: normal;
    opacity: 0.9;
}

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

.contact-info {
    display: flex;
    gap: 30px;
    color: #fff;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
}

.info-item i {
    font-size: 18px;
}

.footer {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo h2 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 10px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
    position: relative;
    padding-bottom: 10px;
}

.footer h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #1a5fb4;
}

.footer-links ul li,
.footer-services ul li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: all 0.3s;
}

.footer-links a:hover {
    color: #fff;
    padding-left: 5px;
}

.footer-services li {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact i {
    color: #1a5fb4;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .slide-content h2 {
        font-size: 40px;
    }
    
    .slide-content p {
        font-size: 20px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        display: none;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 15px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .header-phone {
        display: none;
    }
    
    .banner {
        height: 400px;
    }
    
    .slide-content h2 {
        font-size: 28px;
    }
    
    .slide-content p {
        font-size: 16px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .news-item {
        flex-direction: column;
    }
    
    .news-date {
        width: 100%;
        flex-direction: row;
        gap: 10px;
        padding: 15px;
    }
    
    .news-date .day {
        font-size: 24px;
    }
    
    .contact-content {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-phone {
        font-size: 24px;
    }
    
    .phone-number {
        font-size: 28px;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 22px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .slide-content h2 {
        font-size: 24px;
    }
    
    .service-item {
        padding: 30px 15px;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
    }
    
    .service-icon i {
        font-size: 28px;
    }
}

.page-content {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-content-full {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.company-name {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid #1a5fb4;
}

.company-name h3 {
    font-size: 28px;
    color: #1a5fb4;
}

.contact-persons {
    margin-bottom: 30px;
}

.contact-persons h4,
.address-list h4,
.hotline h4 {
    font-size: 20px;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-persons h4 i,
.address-list h4 i,
.hotline h4 i {
    color: #1a5fb4;
}

.person-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.person-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.person-item .name {
    font-weight: 600;
    color: #333;
    min-width: 80px;
}

.person-item .phone {
    color: #1a5fb4;
}

.person-item .phone i {
    margin-right: 5px;
}

.address-list {
    margin-bottom: 30px;
}

.address-list ul {
    list-style: none;
}

.address-list li {
    padding: 12px 15px;
    background: #f8f9fa;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 3px solid #1a5fb4;
}

.addr-label {
    display: inline-block;
    width: 25px;
    font-weight: bold;
    color: #1a5fb4;
}

.hotline {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, #1a5fb4, #3498db);
    border-radius: 10px;
    color: #fff;
}

.hotline h4 {
    color: #fff;
    justify-content: center;
}

.hotline h4 i {
    color: #fff;
}

.hotline-number {
    font-size: 36px;
    font-weight: bold;
    margin-top: 15px;
}

@media (max-width: 768px) {
    .person-list {
        grid-template-columns: 1fr;
    }
    
    .hotline-number {
        font-size: 28px;
    }
}

.service-detail {
    padding: 80px 0;
    background: #f8f9fa;
}

.service-detail-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.service-detail-text {
    text-align: center;
    max-width: 800px;
}

.service-detail-text h3 {
    font-size: 28px;
    color: #1a5fb4;
    margin-bottom: 20px;
}

.service-detail-text p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 30px 0;
    list-style: none;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: #333;
}

.service-features i {
    color: #1a5fb4;
    font-size: 18px;
}

.service-detail-image {
    text-align: center;
    width: 100%;
}

.service-detail-image img {
    max-width: 800px;
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.contact-btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, #1a5fb4, #3498db);
    color: #fff;
    border-radius: 25px;
    font-size: 16px;
    margin-top: 20px;
    transition: all 0.3s;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(26, 95, 180, 0.3);
}

@media (max-width: 768px) {
    .service-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-detail-text h3 {
        font-size: 24px;
    }
}

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

.news-item-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.news-item-link:hover .news-item {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.news-item-link:hover .news-content h3 {
    color: #1a5fb4;
}

.news-detail {
    padding: 80px 0;
    background: #f8f9fa;
}

.news-detail-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid #e0e0e0;
}

.news-detail-header h1 {
    font-size: 32px;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.4;
}

.news-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: #888;
    font-size: 14px;
}

.news-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.news-meta i {
    color: #1a5fb4;
}

.news-detail-content {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    line-height: 2;
}

.news-detail-content p {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
    text-indent: 2em;
}

.news-nav {
    margin-top: 40px;
    text-align: center;
}

.back-btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, #1a5fb4, #3498db);
    color: #fff;
    border-radius: 25px;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
}

.back-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(26, 95, 180, 0.3);
}

.back-btn i {
    margin-right: 8px;
}

@media (max-width: 768px) {
    .news-detail-header h1 {
        font-size: 24px;
    }
    
    .news-detail-content {
        padding: 25px;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 10px;
    }
}