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

body {
    font-family:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue',
        Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: #3758F9;
    color: white;
}

.btn-primary:hover {
    background-color: #409eff;
}

.btn-secondary {
    background-color: white;
    color: #3758F9;
    border: 1px solid #3758F9;
}

.btn-secondary:hover {
    background-color: #ecf5ff;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

/* 导航栏 */
.header {
    background-color: #3758f9;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-logo h1 {
    font-size: 24px;
    font-weight: 600;
    color: white;
}

.nav-logo img {
    height: 60px;
    display: block;
}

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

.nav-item {
    margin-left: 30px;
}

.nav-link {
    text-decoration: none;
    color: white;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
}

.nav-link:hover,
.nav-link.active {
    color: white;
    opacity: 0.9;
}

.nav-buttons {
    margin-left: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-buttons .btn-primary {
    background-color: white;
    color: #3758f9;
}

.nav-buttons .btn-primary:hover {
    background-color: #f0f0f0;
    color: #3758f9;
}

.login-link {
    color: white;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s ease;
}

.login-link:hover {
    opacity: 0.8;
}

.login-link.active {
    color: white;
    font-weight: 500;
}

/* 下拉菜单样式 */
.nav-item.dropdown {
    position: relative;
}

/* 下拉箭头 */
.dropdown-toggle::after {
    content: '\25BC';
    font-size: 10px;
    margin-left: 6px;
    color: white;
    opacity: 0.8;
    transition: transform 0.3s ease;
}


.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 12px 0;
    min-width: 280px;
    z-index: 1001;
    list-style: none;
    border-top: 4px solid transparent;
}

.nav-item.dropdown .dropdown-menu {
    display: none;
    opacity: 0;
    animation: fadeIn 0.3s ease;
}

.nav-item.dropdown .dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    will-change: opacity;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    text-decoration: none;
    color: #303133;
    font-size: 14px;
    transition: all 0.3s ease;
    white-space: nowrap;
    line-height: 1.5;
}

.dropdown-item:hover {
    background-color: #ecf5ff;
    color: #409eff;
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #303133;
}

.section-header p {
    font-size: 16px;
    color: #606266;
}

/* 页面标题 (Shared across multiple pages) */
.page-header {
    background: linear-gradient(135deg, #0066ff 0%, #0044cc 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-header h2 {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* 常见问题 (Shared between Index and FAQ page) */
.faq {
    padding: 100px 0;
    background-color: #f5f7fa;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: white;
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.faq-question {
    padding: 20px 30px;
    font-size: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 1px solid #f0f0f0;
}

.faq-question:hover {
    background-color: #f5f7fa;
}

.faq-answer {
    padding: 20px 30px;
    font-size: 18px;
    color: #606266;
    background-color: #fafafa;
}

/* 联系我们 (Shared between Index and Contact page) */
.contact {
    padding: 100px 0;
    background-color: white;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    text-align: center;
}

.contact-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #303133;
}

.contact-item p {
    color: #606266;
    font-size: 14px;
    margin-bottom: 8px;
}

/* 行动召唤 (Shared) */
.cta {
    padding: 80px 0;
    background-color: #f5f7fa;
    text-align: center;
}

.cta-content h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #303133;
}

.cta-content p {
    font-size: 18px;
    color: #606266;
    margin-bottom: 30px;
}

/* 页脚 */
.footer {
    background-color: #303133;
    color: #909399;
    padding: 60px 0 20px;
}

.footer-links {
    width: 100%;
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #404244;
    margin-bottom: 30px;
}

.footer-links ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
    gap: 15px 25px;
}

.footer-links a {
    text-decoration: none;
    color: #909399;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

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

.footer-logo {
    text-align: center;
}

.footer-logo-img {
    height: 50px;
    width: auto;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}

.footer-logo p {
    font-size: 14px;
    color: #909399;
    line-height: 1.6;
}

.footer-contact {
    text-align: center;
}

.footer-contact h4 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-contact p {
    font-size: 14px;
    color: #909399;
    margin-bottom: 8px;
    line-height: 1.6;
}

.footer-blog {
    text-align: left;
}

.footer-blog h4 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-blog-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-blog-item {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-blog-item:hover {
    opacity: 0.8;
}

.footer-blog-item img {
    width: 60px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.footer-blog-item span {
    color: #909399;
    font-size: 13px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.footer-blog-item:hover span {
    color: #409eff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #404244;
    font-size: 12px;
}

.footer-bottom a.icp-link {
    color: inherit;
    text-decoration: none;
}

.footer-bottom a.icp-link:hover {
    text-decoration: underline;
}

/* form-group (Used in Contact and Login) */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: #303133;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    font-size: 14px;
    color: #606266;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #409eff;
}

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

/* 企业微信二维码弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: #ffffff;
    margin: 15% auto;
    padding: 20px;
    border-radius: 8px;
    width: 300px;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    color: #999;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover {
    color: #333;
}

.modal-body {
    text-align: center;
    padding: 20px 0;
}

.modal-qr {
    width: 200px;
    height: 200px;
    margin-bottom: 16px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.modal-text {
    font-size: 16px;
    color: #333;
    font-weight: 500;
    margin: 0;
}

/* 智能体对话框样式 */
.agent-dialog {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 400px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    z-index: 1000;
    max-height: 600px;
}

.agent-dialog.show {
    display: flex;
}

/* 对话框头部 */
.agent-dialog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background-color: #f5f7fa;
    border-radius: 12px 12px 0 0;
    border-bottom: 1px solid #e4e7ed;
}

.agent-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.agent-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.agent-details {
    display: flex;
    flex-direction: column;
}

.agent-name {
    font-size: 16px;
    font-weight: 600;
    color: #303133;
}

.agent-brand {
    font-size: 12px;
    color: #909399;
}

.agent-close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: #909399;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.agent-close-btn:hover {
    background-color: #ecf5ff;
    color: #409eff;
}

/* 对话框主体 */
.agent-dialog-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.agent-greeting {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.agent-greeting-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
    margin-top: 4px;
}

.agent-greeting-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.agent-greeting-text {
    font-size: 14px;
    font-weight: 500;
    color: #303133;
}

.agent-greeting-subtext {
    font-size: 12px;
    color: #606266;
}

.agent-greeting-desc {
    font-size: 12px;
    color: #909399;
    margin-top: 4px;
}

.agent-quick-questions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.agent-quick-question {
    background-color: #f5f7fa;
    border: 1px solid #e4e7ed;
    border-radius: 8px;
    padding: 12px 16px;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    color: #606266;
    transition: all 0.3s ease;
}

.agent-quick-question:hover {
    background-color: #ecf5ff;
    border-color: #c6e2ff;
    color: #409eff;
}

/* 对话框底部 */
.agent-dialog-footer {
    padding: 20px;
    border-top: 1px solid #e4e7ed;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.agent-input-container {
    display: flex;
    gap: 8px;
    align-items: center;
}

.agent-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #dcdfe6;
    border-radius: 24px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.agent-input:focus {
    outline: none;
    border-color: #409eff;
}

.agent-send-btn {
    background-color: #409eff;
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}

.agent-send-btn:hover {
    background-color: #66b1ff;
}

.agent-version {
    font-size: 12px;
    color: #909399;
    text-align: center;
}

/* 对话框切换按钮 */
.agent-toggle-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #3758f9;
    color: white;
    border: none;
    border-radius: 28px;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    z-index: 999;
}

.agent-toggle-btn:hover {
    background-color: #409eff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.agent-toggle-btn img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

/* 响应式设计 (Common Mobile Styles) */
@media (max-width: 768px) {
    .nav {
        height: 56px;
    }

    .nav-menu {
        display: none;
        background-color: #3758f9 !important;
    }

    .nav-item.dropdown .dropdown-toggle::after {
        transition: transform 0.2s ease;
    }

    .nav-item.dropdown.open .dropdown-toggle::after {
        transform: rotate(180deg);
    }

    .nav-logo img {
        height: 28px;
        width: auto;
        max-width: 160px;
        object-fit: contain;
    }

    .nav-item.dropdown .dropdown-menu {
        background-color: transparent !important;
        box-shadow: none !important;
        display: none;
        position: static;
        padding: 8px 0;
        min-width: 100%;
    }

    .nav-item.dropdown.open .dropdown-menu {
        display: block;
    }

    .nav-item.dropdown .dropdown-menu a {
        color: white !important;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .footer-logo,
    .footer-contact,
    .footer-blog {
        text-align: center;
    }

    .footer-blog-list {
        align-items: center;
    }

    .footer-blog-item {
        justify-content: center;
    }

    .footer-links ul {
        flex-direction: column;
        gap: 15px;
    }

    .contact-info {
        display: grid;
        grid-template-columns: 1fr;
    }
}