/* 通用样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.sticky {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 15px;
    padding-right: 15px;
}

.logo img {
    height: 50px;
}

.nav-menu ul {
    display: flex;
    list-style: none;
}

.nav-menu ul li {
    margin-left: 30px;
}

.nav-menu ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-menu ul li a:hover,
.nav-menu ul li a.active {
    color: #007bff;
    background-color: rgba(0, 123, 255, 0.1);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 移动端菜单 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: #fff;
        transition: 0.3s;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        padding: 20px;
    }
    
    .nav-menu ul li {
        margin: 10px 0;
        text-align: center;
    }
    
    .nav-menu ul li a {
        display: block;
        padding: 15px;
        border-bottom: 1px solid #eee;
    }
    
    /* 移动端菜单按钮动画 */
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}

/* 主体内容 */
.main {
    margin-top: 70px;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.7fr; /* 调整比例：关于我们(1.5)、快速链接(1)、联系我们+二维码(1.7) */
    gap: 30px;
    padding: 0 15px;
}

.footer-section h3 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

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

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

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

.footer-section ul li a:hover {
    color: #007bff;
}

.social-media img {
    width: 120px;
    height: 120px;
    margin-bottom: 10px;
}

.contact-qr-section {
    min-width: 300px; /* 确保在小屏幕上也有足够空间 */
}

.contact-qr-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-info {
    flex: 1;
    padding-top: 30px;
    padding-bottom: 30px
}

.contact-info ul {
    margin-bottom: 0;
}

.qr-code-container {
    flex-shrink: 0;
    align-self: flex-start;
}

.qr-code-container img {
    width: 120px;
    height: 120px;
    max-width: 100%;
    border-radius: 4px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 30px auto 0;
    padding-top: 20px;
    border-top: 1px solid #555;
    text-align: center;
    color: #ccc;
}

.footer-bottom a {
    color: #007bff;
    margin: 0 10px;
    text-decoration: none;
}

/* 咨询悬浮按钮 */
.consultation-float {
    position: fixed;
    right: 30px;
    bottom: 100px;
    z-index: 999;
}

.consult-btn {
    background: #007bff;
    color: #fff;
    border: none;
    padding: 15px 20px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
    transition: all 0.3s ease;
}

.consult-btn:hover {
    background: #0056b3;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

/* 回到顶部按钮 */
.back-top {
    position: fixed;
    right: 30px;
    bottom: 40px;
    width: 50px;
    height: 50px;
    background: #007bff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.back-top.show {
    opacity: 1;
}

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

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #fff;
    border-radius: 8px;
    width: 90%;
    max-width: 400px;
    position: relative;
    padding: 25px;
    animation: modalopen 0.4s;
}

.qr-modal-content {
    text-align: center;
    max-width: 400px;
    width: auto;
    padding: 30px 25px;
}

.qr-codes {
    display: flex;
    justify-content: space-around;
    margin: 20px 0;
    flex-wrap: wrap;
    gap: 20px;
}

.qr-code {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-code img {
    width: 150px;
    height: 150px;
    margin-bottom: 10px;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.close:hover,
.close:focus {
    color: #000;
}

@keyframes modalopen {
    from {opacity: 0; transform: translateY(-60px);}
    to {opacity: 1; transform: translateY(0);}
}

/* 响应式设计 */
@media (max-width: 768px) {
    .top-bar {
        padding: 10px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .nav-menu ul li {
        margin-left: 15px;
    }
    
    .main {
        margin-top: 60px;
    }
    
    .consultation-float {
        right: 20px;
        bottom: 80px;
    }
    
    .modal-content {
        width: 95%;
        margin: 0 20px;
    }
    
    .qr-modal-content {
        padding: 20px 15px;
    }
    
    .qr-code img {
        width: 120px;
        height: 120px;
    }
    
    /* 移动端footer响应式样式 */
    .footer-content {
        grid-template-columns: 1fr; /* 移动端改为单列布局 */
        gap: 20px;
    }
}