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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: #333;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #0a4db1 0%, #1e6bd6 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
}

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

.logo-img {
    height: 36px;
    width: auto;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.navbar-menu li a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.navbar-menu li a:hover {
    color: #a8d4ff;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.navbar-phone {
    color: white;
    font-size: 18px;
    font-weight: bold;
}

.btn-primary, .btn-secondary {
    padding: 8px 20px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: white;
    color: #1e6bd6;
}

.btn-primary:hover {
    background: #f0f7ff;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Banner区域 */
.banner {
    background: linear-gradient(135deg, #0a4db1 0%, #1e6bd6 50%, #2a86e8 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
}

.banner-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.banner-content {
    flex: 1;
}

.banner-title {
    color: white;
    font-size: 48px;
    font-weight: bold;
    line-height: 1.3;
    margin-bottom: 30px;
}

.banner-subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
}

.banner-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.banner-image img {
    max-width: 600px;
    height: auto;
}

/* 服务流程 */
.services {
    padding: 60px 0;
    background: #f8fafc;
}

.services-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 50px;
}

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

.service-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.service-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1e6bd6, #2a86e8);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
}

.service-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.service-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 成功案例 */
.cases {
    padding: 80px 0;
    background: white;
}

.cases-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 50px;
}

.section-title {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    margin-bottom: 50px;
    text-align: left;
}

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

.case-card {
    background: #f8fafc;
    padding: 25px;
    border-radius: 12px;
    transition: transform 0.3s;
}

.case-card:hover {
    transform: translateY(-3px);
}

.case-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.case-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #1e6bd6, #2a86e8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.case-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
}

.case-desc {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.case-clients {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.client-logo {
    width: 45px;
    height: 45px;
    background: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #666;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* 经营范围 */
.business {
    padding: 80px 0;
    background: linear-gradient(135deg, #0a4db1 0%, #1e6bd6 100%);
}

.business-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 50px;
}

.business-title {
    font-size: 28px;
    font-weight: bold;
    color: white;
    margin-bottom: 30px;
}

.business-content {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    backdrop-filter: blur(10px);
}

.business-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    line-height: 2.2;
    text-align: justify;
}

.business-text p {
    margin-bottom: 15px;
}

/* 页脚 */
.footer {
    background: #1a1a2e;
    padding: 50px 0;
    color: white;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 50px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

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

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

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

/* 响应式 */
@media (max-width: 1200px) {
    .services-grid, .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        gap: 15px;
    }

    .navbar-menu {
        gap: 15px;
    }

    .banner-container {
        flex-direction: column;
        text-align: center;
    }

    .banner-title {
        font-size: 32px;
    }

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

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