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

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    color: #333;
    line-height: 1.6;
    background: #f8f9fa;
}

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

/* 头部 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #1890ff;
}

.logo-icon {
    font-size: 28px;
    margin-right: 10px;
    margin-bottom: -12px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color .3s;
}

.nav a:hover,
.nav a.active {
    color: #1890ff;
}

.header-phone {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
}

.phone-icon {
    margin-right: 8px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* 移动端菜单 */
.mobile-menu {
    display: none;
    background: #fff;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 12px 0;
    text-decoration: none;
    color: #333;
    border-bottom: 1px solid #f0f0f0;
}

.mobile-phone {
    padding: 15px 0;
    color: #1890ff;
    font-weight: 600;
}

/* Banner */
.banner {
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.banner h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.banner p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: .9;
}

.banner-btn {
    display: inline-block;
    background: #fff;
    color: #1890ff;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: transform .3s;
}

.banner-btn:hover {
    transform: translateY(-2px);
}

/* 区块标题 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 15px;
}

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

/* 服务特点 */
.features {
    padding: 80px 0;
    background: #fff;
}

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

.feature-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 10px;
    transition: transform .3s, box-shadow .3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,.1);
}

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

.feature-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

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

/* 服务项目 */
.services {
    padding: 80px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
    transition: transform .3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-img {
    height: 180px;
    background: linear-gradient(135deg, #1890ff, #722ed1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: #fff;
}

.service-content {
    padding: 25px;
}

.service-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

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

/* 案例 */
.cases-section {
    padding: 80px 0;
    background: #fff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: transform .3s;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-img {
    height: 200px;
    background: linear-gradient(135deg, #52c41a, #1890ff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: #fff;
}

.case-content {
    padding: 20px;
}

.case-content h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #333;
}

.case-content p {
    color: #666;
    font-size: 13px;
    margin-bottom: 8px;
}

.case-address {
    color: #1890ff;
    font-size: 12px;
}

/* 联系CTA */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1890ff 0%, #722ed1 100%);
    color: #fff;
    text-align: center;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: .9;
}

.cta-phone {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
}

/* 页面通用 */
.page-banner {
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.page-banner h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-content {
    padding: 60px 0;
}

/* 文章列表 */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.article-item {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
}

.article-item h2 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.article-item .content {
    color: #666;
    line-height: 1.8;
}

.article-item .time {
    color: #999;
    font-size: 14px;
    margin-top: 15px;
}

/* 联系页面 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-item .icon {
    font-size: 24px;
    margin-right: 15px;
    color: #1890ff;
}

.contact-item h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: #333;
}

.contact-item p {
    color: #666;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #666;
    font-weight: 500;
}

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

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

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

/* 底部 */
.footer {
    background: #1f2937;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #1890ff;
}

.footer-info p {
    color: #9ca3af;
    margin-bottom: 10px;
}

.footer-phone {
    font-size: 20px;
    font-weight: 600;
    color: #fff !important;
    margin-top: 15px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links a {
    display: block;
    color: #9ca3af;
    text-decoration: none;
    margin-bottom: 10px;
    transition: color .3s;
}

.footer-links a:hover {
    color: #1890ff;
}

.footer-contact p {
    color: #9ca3af;
    margin-bottom: 8px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #374151;
    color: #9ca3af;
    font-size: 14px;
}

/* 浮动电话 */
.float-phone {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.float-phone a {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #52c41a, #389e0d);
    color: #fff;
    padding: 15px 25px;
    border-radius: 30px;
    text-decoration: none;
    box-shadow: 0 5px 20px rgba(82, 196, 26, .4);
    font-weight: 600;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.float-icon {
    font-size: 20px;
    margin-right: 10px;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav, .header-phone {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .banner h1 {
        font-size: 28px;
    }
    
    .features-grid,
    .services-grid,
    .cases-grid,
    .footer-inner,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-phone {
        font-size: 28px;
    }
    
    .float-phone {
        bottom: 20px;
        right: 20px;
    }
    
    .float-text {
        display: none;
    }
}