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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

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

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo h1 {
    font-size: 32px;
    font-weight: 700;
    color: #0066cc;
    margin-bottom: 5px;
}

.logo p {
    font-size: 14px;
    color: #666;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 16px;
}

.nav-links a:hover {
    color: #0066cc;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #0052a3 0%, #0066cc 100%);
    color: #fff;
    padding: 200px 0 150px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,224L48,218.7C96,213,192,203,288,186.7C384,171,480,149,576,160C672,171,768,213,864,224C960,235,1056,213,1152,186.7C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: center;
}

.hero .container {
    position: relative;
    z-index: 1;
}

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

.hero h1 {
    font-size: 64px;
    font-weight: 900;
    margin-bottom: 30px;
    line-height: 1.1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero p {
    font-size: 24px;
    margin-bottom: 60px;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 80px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-top: 60px;
    padding-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 10px;
    color: #fff;
}

.stat-label {
    display: block;
    font-size: 16px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button {
    display: inline-block;
    padding: 18px 36px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 16px;
}

.cta-button.primary {
    background-color: #fff;
    color: #0066cc;
}

.cta-button.secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 服务区域 */
.services {
    padding: 120px 0;
    background-color: #fff;
}

.services h2 {
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.section-description {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 80px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.service-card {
    background-color: #fff;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid #f0f0f0;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.service-icon {
    margin-bottom: 30px;
    background: linear-gradient(135deg, #f0f9ff, #e6f7ff);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, #e6f7ff, #d0ebff);
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
    text-align: center;
}

.service-card p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 30px;
    text-align: left;
}

.service-icon {
    margin-bottom: 30px;
}

.service-card h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 25px;
    color: #0066cc;
}

.service-card p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 30px;
}

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

.service-features li {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.service-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #0066cc;
    font-weight: bold;
}

/* 核心优势 */
.advantages {
    padding: 120px 0;
    background-color: #f8f9fa;
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

.advantages h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 30px;
    color: #333;
}

.advantages .section-description {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 80px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.advantage-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.advantage-card {
    background-color: #fff;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.advantage-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.advantage-card p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background-color: #fff;
    position: relative;
}

.about h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 30px;
    color: #333;
}

.about .section-description {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 80px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.about-content {
    display: flex;
    gap: 80px;
    align-items: flex-start;
    background-color: #f8f9fa;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid #f0f0f0;
}

.about-text {
    flex: 2;
}

.about-text p {
    font-size: 18px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 30px;
}

.about-values {
    flex: 1;
    background-color: #fff;
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid #f0f0f0;
}

.about-values h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #333;
    text-align: center;
}

.about-values ul {
    list-style: none;
}

.about-values li {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    padding-left: 30px;
    position: relative;
    line-height: 1.6;
}

.about-values li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #0066cc;
    font-weight: bold;
    font-size: 18px;
}

.about-values li span {
    font-weight: 700;
    color: #333;
    margin-right: 10px;
}

/* 联系我们 */
.contact {
    padding: 120px 0;
    background-color: #f8f9fa;
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

.contact h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 30px;
    color: #333;
}

.contact .section-description {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 80px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contact-content {
    display: flex;
    gap: 80px;
    align-items: flex-start;
    background-color: #fff;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid #f0f0f0;
}

.contact-info {
    flex: 1;
}

.contact-item {
    margin-bottom: 40px;
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    border: 1px solid #f0f0f0;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.contact-item h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-item h3 i {
    color: #0066cc;
    font-size: 24px;
}

.contact-item p {
    font-size: 16px;
    color: #666;
}

.contact-form {
    flex: 2;
    background-color: #f8f9fa;
    padding: 50px;
    border-radius: 15px;
    border: 1px solid #f0f0f0;
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #333;
    text-align: center;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    font-family: 'Noto Sans SC', sans-serif;
    transition: all 0.3s ease;
    background-color: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 180px;
}

.submit-button {
    background-color: #0066cc;
    color: #fff;
    padding: 18px 40px;
    border: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
}

.submit-button:hover {
    background-color: #0052a3;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 102, 204, 0.2);
}

/* 页脚 */
.footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 100px 0 50px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

.footer-content {
    display: flex;
    gap: 80px;
    margin-bottom: 80px;
}

.footer-logo {
    flex: 1;
}

.footer-logo h3 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 20px;
    color: #fff;
}

.footer-logo p {
    font-size: 16px;
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 30px;
}

.footer-social {
    display: flex;
    gap: 20px;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    transition: all 0.3s ease;
    text-decoration: none;
}

.footer-social a:hover {
    background-color: #0066cc;
    transform: translateY(-3px);
}

.footer-links {
    flex: 1;
}

.footer-links h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #fff;
    position: relative;
    padding-bottom: 15px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

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

.footer-links li {
    margin-bottom: 20px;
}

.footer-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
    font-size: 16px;
    display: inline-block;
    position: relative;
    padding-left: 20px;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #0066cc;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: #fff;
    padding-left: 25px;
}

.footer-links a:hover::before {
    left: 5px;
}

.footer-contact {
    flex: 1;
}

.footer-contact h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #fff;
    position: relative;
    padding-bottom: 15px;
}

.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #0052a3, #0066cc);
}

.footer-contact p {
    font-size: 16px;
    opacity: 0.8;
    margin-bottom: 20px;
    line-height: 1.6;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact p i {
    color: #0066cc;
    font-size: 18px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 50px;
    text-align: center;
}

.footer-bottom p {
    font-size: 16px;
    opacity: 0.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .nav-links {
        gap: 20px;
    }

    .hero {
        padding: 150px 0 100px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .service-cards {
        flex-direction: column;
        align-items: center;
    }

    .service-card {
        max-width: 100%;
    }

    .about-content {
        flex-direction: column;
    }

    .contact-content {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .services, .advantages, .about, .contact {
        padding: 80px 0;
    }

    h2 {
        font-size: 32px !important;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #0066cc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0052a3;
}
a:link,
a:visited,
a:hover,
a:active {
  color: #F5F5F5; /* 设置为固定颜色，例如黑色 */
  text-decoration: none; /* 可选：去除下划线 */
}