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

        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.5;
            color: #333;
            background-color: #fff;
        }

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 10000;
    padding: 10px 16px;
    color: #fff;
    background: #304869;
    border-radius: 6px;
    transform: translateY(-160%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid rgba(77, 116, 170, 0.35);
    outline-offset: 3px;
}

.sticky-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.container-fluid {
    width: 100%;
    padding: 0 15px;
    margin: 0 auto;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo 部分 */
.logo-section {
    flex: 0 0 auto;
}

.logo {
    height: 50px;
    width: auto;
    display: block;
}

/* 导航菜单 */
.nav-section {
    flex: 1 1 auto;
    display: flex;
    justify-content: center;
}

.main-nav {
    width: 100%;
}

.nav-menu {
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    margin: 0 15px;
    position: relative;
}

.nav-menu li a {
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu li.active a,
.nav-menu li a:hover {
    color: #4D74AA;
}

/* 用户操作区域 */
.user-section {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.auth-buttons {
    display: flex;
    margin-right: 20px;
}

.btn-login,
.btn-register {
    padding: 8px 15px;
    margin: 0 5px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s, background-color 0.3s, border-color 0.3s;
}

.btn-login {
    color: #333;
    border: 1px solid #ddd;
}

.btn-login:hover {
    background-color: #f5f5f5;
}

.btn-register {
    color: #fff;
    background-color: #4D74AA;
    border: 1px solid #4D74AA;
}

.btn-register:hover {
    background-color: #3F608D;
}

/* 汉堡按钮 */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    margin-left: 10px;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #333;
    margin: 5px 0;
    transition: transform 0.3s, opacity 0.3s;
}

/* 移动端样式 */
@media (max-width: 992px) {
    .header-container {
        height: 70px;
    }
    
    .nav-section {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-section.active {
        max-height: 500px;
    }
    
    .nav-menu {
        flex-direction: column;
        padding: 15px 0;
    }
    
    .nav-menu li {
        margin: 0;
    }
    
    .nav-menu li a {
        padding: 12px 20px;
    }
    
    .hamburger-btn {
        display: block;
    }
    
    .hamburger-btn.active .hamburger-line:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .hamburger-btn.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger-btn.active .hamburger-line:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}

@media (max-width: 576px) {
    .auth-buttons {
        margin-right: 10px;
    }
    
    .btn-login,
    .btn-register {
        padding: 6px 10px;
        font-size: 13px;
    }
}
		
		
		
.hero-section {
    background: linear-gradient(135deg, #283C58 0%, #3F608D 100%);
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 40px;
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-image {
    flex: 1;
    min-width: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    transition: transform 0.4s ease, filter 0.4s ease;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.hero-image:hover img {
    transform: scale(1.03);
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.25));
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    max-width: 800px;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* 特性网格布局 */
.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    align-items: center;
    gap: 15px;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.feature-item img {
    width: auto;
    height: auto;
    max-height: 60px;
    margin: 0;
}

.feature-item p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* 按钮样式 */
.hero-cta {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.cta-button {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.3s, background-color 0.3s, border-color 0.3s, transform 0.3s;
}

.cta-button.primary {
    background: #4D74AA;
    color: white;
}

.cta-button.primary:hover {
    background: #3F608D;
    transform: translateY(-2px);
}

.cta-button.secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-button.secondary:hover {
    border-color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-cta {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        text-align: center;
    }
}
		
		
		
		
		
		/*首页介绍*/
		
		
		/* 基础样式 */
.ip-product-intro {
    padding: 80px 0;
    background-color: #f9fafc;
}

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

.ip-section-title {
    font-size: 2rem;
    color: #304869;
    text-align: center;
    margin-bottom: 15px;
    font-weight: 700;
}

.ip-section-subtitle {
    font-size: 1.1rem;
    color: #666;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
    line-height: 1.6;
}

/* 产品概述部分 */
.ip-overview {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 80px;
}

.ip-overview-content {
    flex: 1;
}

.ip-overview-image {
    flex: 1;
    min-width: 0;
    text-align: center;
}

.ip-overview-image img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.ip-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 30px 0;
}

.ip-highlight-item {
    display: flex;
    align-items: center;
    background: rgba(77, 116, 170, 0.1);
    padding: 10px 15px;
    border-radius: 30px;
    font-weight: 500;
}

.ip-icon {
    margin-right: 8px;
    color: #304869;
}

.ip-desc {
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
}

/* 特点部分 */
.ip-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.ip-feature-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.ip-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.ip-feature-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.ip-feature-icon {
    width: 50px;
    height: 50px;
    background: #EDF1F7;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: #304869;
    font-size: 1.2rem;
}

.ip-feature-card h3 {
    font-size: 1.3rem;
    color: #304869;
    margin: 0;
}

.ip-feature-card p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 15px;
}

.ip-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ip-feature-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: #555;
}

.ip-feature-list li:before {
    content: "•";
    color: #4D74AA;
    position: absolute;
    left: 0;
}

/* 技术规格部分 */
.ip-specs {
    margin-top: 80px;
}

.ip-specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.ip-spec-card {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border-top: 3px solid #4D74AA;
}

.ip-spec-card h3 {
    font-size: 1.1rem;
    color: #304869;
    margin-top: 0;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.ip-spec-card h3 i {
    margin-right: 10px;
    color: #4D74AA;
}

.ip-spec-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    color: #555;
    line-height: 1.8;
}

.ip-spec-card ul li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 8px;
}

.ip-spec-card ul li:before {
    content: "—";
    position: absolute;
    left: 0;
    color: #4D74AA;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .ip-overview {
        flex-direction: column;
    }
    
    .ip-feature-grid {
        grid-template-columns: 1fr;
    }
    
    .ip-specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .ip-section-title {
        font-size: 1.6rem;
    }
    
    .ip-specs-grid {
        grid-template-columns: 1fr;
    }
    
    .ip-highlights {
        flex-direction: column;
    }
}

/*底部文章*/

/* 基础样式 */
.modern-news {
    padding: 60px 0;
    background-color: #f9fafc;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

/* 标题区域 */
.modern-news__header {
    text-align: center;
    margin-bottom: 40px;
}

.modern-news__title {
    font-size: 2rem;
    color: #1a1a1a;
    margin-bottom: 12px;
    font-weight: 600;
}

.modern-news__subtitle {
    font-size: 1rem;
    color: #666;
    margin: 0;
}

/* 标签导航 */
.modern-tabs__nav {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    border-bottom: 1px solid #eaeaea;
    padding-bottom: 15px;
}

.modern-tab__btn {
    background: none;
    border: none;
    padding: 10px 25px;
    font-size: 1rem;
    color: #666;
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.modern-tab__btn.active {
    color: #4D74AA;
    font-weight: 500;
}

.modern-tab__btn.active::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #4D74AA;
}

.modern-tab__btn:hover:not(.active) {
    color: #333;
}

/* 内容区域 */
.modern-tabs__content {
    margin-bottom: 30px;
}

.modern-tab__pane {
    display: none;
}

.modern-tab__pane.active {
    display: block;
}

/* 新闻网格布局 */
.modern-news__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.modern-news__card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.modern-news__link {
    display: block;
    padding: 20px;
    text-decoration: none;
    color: inherit;
}

.modern-news__item-title {
    font-size: 1.1rem;
    color: #1a1a1a;
    margin: 0 0 10px 0;
    font-weight: 500;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.modern-news__card:hover .modern-news__item-title {
    color: #4D74AA;
}

.modern-news__date {
    font-size: 0.85rem;
    color: #999;
    display: block;
}

/* 查看更多链接 */
.modern-news__more {
    display: inline-block;
    color: #4D74AA;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 4px;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.modern-news__more:hover {
    background-color: rgba(77, 116, 170, 0.1);
}

.modern-news__more::after {
    content: '→';
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.modern-news__more:hover::after {
    transform: translateX(3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modern-news__grid {
        grid-template-columns: 1fr;
    }
    
    .modern-tabs__nav {
        flex-wrap: wrap;
    }
    
    .modern-tab__btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .modern-news__title {
        font-size: 1.5rem;
    }
    
    .modern-news__subtitle {
        font-size: 0.9rem;
    }
}

/*footer*/

/* 基础样式 */
.ip-footer {
    background-color: #2a2e37;
    color: #d1d5db;
    padding: 50px 0 0;
    font-size: 0.95rem;
    line-height: 1.6;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

/* 主要链接区域 */
.ip-footer-main {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1.5fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ip-footer-title {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 600;
    position: relative;
    padding-bottom: 8px;
}

.ip-footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: #4D74AA;
}

/* 导航菜单 */
.ip-nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ip-nav-menu li {
    margin-bottom: 10px;
}

.ip-nav-menu a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.9rem;
}

.ip-nav-menu a:hover {
    color: white;
}

/* 产品介绍 */
.ip-product-desc {
    color: #d1d5db;
    line-height: 1.7;
}

.ip-product-desc p {
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.ip-product-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ip-product-features span {
    display: flex;
    align-items: center;
    color: #9DB3D3;
    font-size: 0.9rem;
}

.ip-product-features i {
    margin-right: 8px;
    font-size: 0.9rem;
}

/* 友情链接样式 */
.ip-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}

.ip-link-item {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s;
    display: inline-block;
    padding: 4px 0;
    font-size: 0.9rem;
}

.ip-link-item:hover {
    color: white;
    text-decoration: underline;
}

/* 联系方式 */
.ip-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ip-contact-list li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
}

.ip-footer .ip-icon {
    margin-right: 10px;
    color: #9DB3D3;
    width: 20px;
    text-align: center;
}

/* 免责声明 */
.ip-disclaimer {
    margin-bottom: 20px;
}

.ip-disclaimer-content {
    display: flex;
    align-items: flex-start;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 6px;
}

.ip-icon-warning {
    color: #f59e0b;
    margin-right: 10px;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.ip-disclaimer-text {
    margin: 0;
    color: #9ca3af;
    font-size: 0.9rem;
    line-height: 1.7;
}

/* 公司简介样式 */
.ip-company-profile {
    margin: 25px 0;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
    border-left: 3px solid #4D74AA;
}

.ip-profile-title {
    color: white;
    font-size: 1rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.ip-profile-content {
    color: #d1d5db;
    font-size: 0.9rem;
    line-height: 1.7;
}

.ip-profile-content p {
    margin-bottom: 15px;
}

.ip-profile-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
}

.ip-profile-highlights span {
    display: flex;
    align-items: center;
    color: #9DB3D3;
    font-size: 0.85rem;
    background-color: rgba(77, 116, 170, 0.12);
    padding: 5px 12px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.ip-profile-highlights span:hover {
    background-color: rgba(77, 116, 170, 0.2);
}

.ip-profile-highlights i {
    margin-right: 8px;
    font-size: 0.9rem;
}

/* 备案信息 */
.ip-legal {
    margin-top: 20px;
}

.ip-legal-info {
    display: flex;
    flex-wrap: wrap;
    gap: 15px 30px;
    color: #9ca3af;
    font-size: 0.85rem;
    align-items: center;
}

.ip-legal-info a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

.ip-legal-info a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .ip-footer-main {
        grid-template-columns: 1fr 1fr;
    }
    
    .ip-links-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

@media (max-width: 768px) {
    .ip-company-profile {
        padding: 15px;
    }
    
    .ip-profile-highlights {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 576px) {
    .ip-footer-main {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .ip-footer-title {
        margin-bottom: 15px;
    }
    
    .ip-legal-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .ip-product-features {
        flex-direction: column;
    }
    
    .ip-disclaimer-content {
        flex-direction: column;
    }
    
    .ip-icon-warning {
        margin-bottom: 10px;
    }
}





/* 基础样式 */
.bmw-fixed-sidebar {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: flex-end;
}

/* 客服按钮通用样式 */
.bmw-service-item {
    position: relative;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.bmw-service-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    text-decoration: none;
    color: #fff;
    font-size: 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

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

.bmw-service-link i {
    line-height: 1;
}

/* QQ客服样式 */
.bmw-qq-service .bmw-service-link {
    background-color: #12b7f5;
}

/* 微信客服样式 */
.bmw-wechat-service .bmw-service-link {
    background-color: #07c160;
}

/* 工具提示样式 */
.bmw-service-tooltip {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 999;
    pointer-events: auto; /* 允许与工具提示交互 */
}

.bmw-service-item.active .bmw-service-tooltip {
    opacity: 1;
    visibility: visible;
}

.bmw-tooltip-content {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
    width: 200px;
    text-align: center;
    pointer-events: auto; /* 允许与内容交互 */
}

.bmw-tooltip-title {
    font-size: 16px;
    color: #333;
    font-weight: bold;
    margin-bottom: 10px;
}

.bmw-tooltip-qq {
    font-size: 18px;
    color: #12b7f5;
    font-weight: bold;
    margin: 10px 0;
}

.bmw-tooltip-text {
    font-size: 14px;
    color: #666;
    margin: 10px 0 0;
}

.bmw-wechat-qrcode {
    width: 160px;
    height: 160px;
    margin: 10px auto;
    display: block;
}

.bmw-consult-btn {
    display: block;
    background-color: #12b7f5;
    color: white;
    padding: 8px 15px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
    margin-top: 15px;
    transition: background-color 0.3s;
}

.bmw-consult-btn:hover {
    background-color: #0e9fd8;
}

/* 返回顶部按钮 */
.bmw-back-to-top {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    margin-top: 10px;
}

.bmw-back-to-top.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.bmw-back-to-top a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: #666;
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.bmw-back-to-top a:hover {
    background-color: #4D74AA;
    transform: translateY(-5px);
}

.bmw-back-to-top i {
    font-size: 18px;
}

/* 移动端样式 */
@media (max-width: 768px) {
    .bmw-fixed-sidebar {
        right: 10px;
        bottom: 60px;
    }
    
    .bmw-service-item {
        width: 45px;
        height: 45px;
    }
    
    .bmw-service-link {
        font-size: 20px;
    }
    
    .bmw-service-tooltip {
        right: 55px;
    }
    
    .bmw-tooltip-content {
        width: 180px;
        padding: 15px;
    }
    
    .bmw-wechat-qrcode {
        width: 140px;
        height: 140px;
    }
    
    .bmw-back-to-top a {
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 576px) {
    .bmw-fixed-sidebar {
        right: 5px;
        bottom: 50px;
    }
    
    .bmw-service-item {
        width: 40px;
        height: 40px;
    }
    
    .bmw-service-link {
        font-size: 18px;
    }
    
    .bmw-tooltip-content {
        width: 160px;
        padding: 12px;
    }
    
    .bmw-wechat-qrcode {
        width: 120px;
        height: 120px;
    }
}



/* 价格页 */
.ip-pricing {
    padding: 22px 0;
    background:
        linear-gradient(180deg, #f4f7fb 0%, #ffffff 42%, #f6f9fc 100%);
    color: #172033;
}

.ip-pricing .ip-container {
    max-width: 1180px;
}

.ip-pricing-head {
    max-width: 860px;
    margin: 0 auto 34px;
    text-align: center;
}

.ip-kicker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 0 12px;
    margin-bottom: 12px;
    border: 1px solid #C0CEE2;
    border-radius: 6px;
    background: #EDF1F7;
    color: #39567F;
    font-size: 0.86rem;
    font-weight: 700;
}

.ip-pricing .ip-section-title {
    margin-bottom: 12px;
    color: #304869;
    font-size: 2rem;
    line-height: 1.25;
}

.ip-pricing .ip-section-subtitle {
    max-width: 760px;
    margin: 0 auto 20px;
    color: #667085;
    font-size: 1rem;
}

.ip-summary-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.ip-summary-bar span {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 14px;
    border: 1px solid #e4e9f2;
    border-radius: 6px;
    background: #ffffff;
    color: #344054;
    font-size: 0.9rem;
    box-shadow: 0 8px 24px rgba(20, 33, 61, 0.05);
}

.ip-category-tabs {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-top: 18px;
    padding: 6px;
    border: 1px solid #e0e8f2;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 12px 28px rgba(20, 33, 61, 0.06);
}

.ip-category-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 14px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: #475467;
    cursor: pointer;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 700;
    transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.ip-category-tab em {
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    border-radius: 999px;
    background: #eef2f7;
    color: #667085;
    font-size: 0.78rem;
    font-style: normal;
    line-height: 22px;
}

.ip-category-tab:hover {
    background: #f4f8fc;
    color: #4D74AA;
}

.ip-category-tab.is-active {
    background: #304869;
    color: #ffffff;
    box-shadow: 0 8px 18px rgba(20, 33, 61, 0.18);
}

.ip-category-tab.is-active em {
    background: rgba(255, 255, 255, 0.18);
    color: #ffffff;
}

.ip-pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    align-items: stretch;
}

.ip-pricing-grid[data-active-filter="l2tp"] {
    max-width: 600px;
    margin: 0 auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ip-pricing-card {
    position: relative;
    display: flex;
    min-width: 0;
    min-height: 430px;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid #e3e9f2;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 16px 36px rgba(20, 33, 61, 0.08);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.ip-pricing-card[hidden] {
    display: none;
}

.ip-pricing-card:hover {
    transform: translateY(-4px);
    border-color: #a8cdf6;
    box-shadow: 0 20px 44px rgba(20, 33, 61, 0.12);
}

.ip-pricing-card.ip-highlight {
    border-color: #4D74AA;
}

.ip-pricing-card.ip-highlight::before,
.ip-custom-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #4D74AA, #10b981);
}

.ip-custom-card::before {
    background: linear-gradient(90deg, #d97706, #4D74AA);
}

.ip-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 22px 20px 10px;
    border-bottom: 0;
}

.ip-zone-tag {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 10px;
    margin-bottom: 10px;
    border-radius: 6px;
    background: #EDF1F7;
    color: #39567F;
    font-size: 0.82rem;
    font-weight: 700;
    white-space: nowrap;
}

.ip-card-title {
    margin: 0;
    color: #172033;
    font-size: 1.18rem;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.ip-card-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    min-height: 26px;
    padding: 0 9px;
    border-radius: 6px;
    background: #4D74AA;
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.ip-card-badge-soft {
    background: #eef2f7;
    color: #475467;
}

.ip-card-badge-green {
    background: #e7f8f2;
    color: #087f5b;
}

.ip-card-badge-gold {
    background: #fff4dd;
    color: #b45309;
}

.ip-card-subtitle {
    margin: 0 20px 14px;
    color: #4D74AA;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.45;
}

.ip-card-meta {
    display: grid;
    gap: 8px;
    padding: 0 20px 18px;
    color: #667085;
    font-size: 0.88rem;
    line-height: 1.55;
}

.ip-card-meta span {
    min-width: 0;
    overflow-wrap: anywhere;
}

.ip-card-body {
    display: grid;
    gap: 10px;
    padding: 0 20px 20px;
    flex: 1;
}

.ip-price-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 48px;
    padding: 10px 12px;
    border: 1px solid #edf1f7;
    border-radius: 8px;
    background: #f8fafc;
    font-size: 0.95rem;
}

.ip-price-row span {
    color: #475467;
    font-weight: 600;
    white-space: nowrap;
}

.ip-price-row strong {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    color: #4D74AA;
    font-size: 1.22rem;
    font-weight: 800;
    line-height: 1;
    text-align: right;
    white-space: nowrap;
}

.ip-price-row del {
    color: #98a2b3;
    font-size: 0.82rem;
    font-weight: 500;
}

.ip-price-disabled {
    background: #ffffff;
}

.ip-price-disabled strong {
    color: #98a2b3;
    font-size: 0.9rem;
    font-weight: 600;
}

.ip-card-footer {
    padding: 0 20px 20px;
    background: transparent;
}

.ip-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 8px;
    background: #304869;
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.ip-btn:hover {
    background: #4D74AA;
    transform: translateY(-1px);
}

@media (max-width: 1100px) {
    .ip-pricing-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .ip-pricing {
        padding: 54px 0;
    }

    .ip-pricing-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 576px) {
    .ip-pricing {
        padding: 42px 0;
    }

    .ip-pricing .ip-container {
        padding: 0 14px;
    }

    .ip-pricing .ip-section-title {
        font-size: 1.55rem;
    }

    .ip-summary-bar {
        justify-content: flex-start;
    }

    .ip-summary-bar span {
        width: 100%;
        justify-content: center;
    }

    .ip-category-tabs {
        display: flex;
        width: 100%;
    }

    .ip-category-tab {
        flex: 1 1 calc(50% - 6px);
        min-width: 0;
        padding: 0 10px;
    }

    .ip-pricing-grid {
        grid-template-columns: 1fr;
    }

    .ip-pricing-grid[data-active-filter="l2tp"] {
        max-width: none;
        grid-template-columns: 1fr;
    }

    .ip-pricing-card {
        min-height: auto;
    }

    .ip-card-header,
    .ip-card-meta,
    .ip-card-body,
    .ip-card-footer {
        padding-left: 16px;
        padding-right: 16px;
    }

    .ip-card-subtitle {
        margin-left: 16px;
        margin-right: 16px;
    }

    .ip-price-row strong {
        font-size: 1.1rem;
    }
}

/*help*/

/* 基础样式 */
.bangzhu-help-center {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: #333;
    line-height: 1.6;
}

/* 头部区域 */
.bangzhu-header {
    background: linear-gradient(135deg, #4D74AA 0%, #304869 100%);
    color: white;
    padding: 80px 0 60px;
    margin-bottom: 40px;
}

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

.bangzhu-header-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.bangzhu-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.bangzhu-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 主内容区 */
.bangzhu-main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏 */
.bangzhu-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.bangzhu-breadcrumb {
    font-size: 0.9rem;
    color: #666;
}

.bangzhu-breadcrumb a {
    color: #4D74AA;
    text-decoration: none;
}

.bangzhu-breadcrumb a:hover {
    text-decoration: underline;
}

/* 搜索框 */
.bangzhu-search {
    flex: 0 0 300px;
}

.bangzhu-search-wrapper {
    position: relative;
    display: flex;
}

.bangzhu-search-input {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s;
}

.bangzhu-search-input:focus {
    border-color: #4D74AA;
}

.bangzhu-search-button {
    background-color: #4D74AA;
    color: white;
    border: none;
    padding: 0 15px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background-color 0.3s;
}

.bangzhu-search-button:hover {
    background-color: #3F608D;
}

.bangzhu-icon-search {
    margin-right: 5px;
}

.bangzhu-search-text {
    font-size: 0.9rem;
}

/* 子栏目导航 */
.bangzhu-subnav {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0 0 30px;
    border-bottom: 1px solid #eee;
}

.bangzhu-subnav-item {
    margin-right: 20px;
    margin-bottom: 15px;
}

.bangzhu-subnav-item a {
    display: block;
    padding: 8px 0;
    color: #555;
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s;
}

.bangzhu-subnav-item a:hover,
.bangzhu-subnav-item.active a {
    color: #4D74AA;
}

.bangzhu-subnav-item.active a:after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #4D74AA;
}

/* 教程列表 */
.bangzhu-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.bangzhu-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.bangzhu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.bangzhu-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.bangzhu-thumb-container {
    position: relative;
    padding-top: 56.25%; /* 16:9 比例 */
    background-color: #f5f5f5;
}

.bangzhu-thumb-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.bangzhu-thumb {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: white;
}

.bangzhu-no-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    background-color: #f5f5f5;
}

.bangzhu-content {
    padding: 20px;
}

.bangzhu-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 10px;
}

.bangzhu-icon-eye {
    margin-right: 5px;
}

.bangzhu-title {
    font-size: 1.2rem;
    margin: 0 0 10px;
    color: #333;
    font-weight: 600;
    line-height: 1.4;
}

.bangzhu-desc {
    font-size: 0.95rem;
    color: #666;
    margin: 0 0 15px;
    line-height: 1.6;
}

.bangzhu-more {
    color: #4D74AA;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-block;
    transition: transform 0.3s;
}

.bangzhu-item:hover .bangzhu-more {
    transform: translateX(5px);
}

/* 分页样式 */
.bangzhu-pagination-wrapper {
    margin: 40px 0 60px;
    text-align: center;
}

.bangzhu-pagination {
    display: inline-block;
}

.bangzhu-pagination-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.bangzhu-pagination-list li {
    margin: 0;
    display: inline-block;
}

.bangzhu-pagination-list a,
.bangzhu-pagination-list strong {
    display: inline-block;
    min-width: 36px;
    padding: 8px 12px;
    border-radius: 4px;
    text-align: center;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s, background-color 0.3s, border-color 0.3s;
    border: 1px solid #e0e0e0;
    color: #4D74AA;
    background: white;
}

.bangzhu-pagination-list a:hover {
    background: #EDF1F7;
    border-color: #C0CEE2;
}

.bangzhu-pagination-list strong,
.bangzhu-pagination-list .active a {
    background: #4D74AA;
    color: white;
    border-color: #4D74AA;
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .bangzhu-header {
        padding: 60px 0 40px;
    }
    
    .bangzhu-header h1 {
        font-size: 2rem;
    }
    
    .bangzhu-header p {
        font-size: 1.1rem;
    }
    
    .bangzhu-top-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .bangzhu-search {
        flex: 1;
        width: 100%;
        margin-top: 15px;
    }
    
    .bangzhu-list {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 576px) {
    .bangzhu-header {
        padding: 50px 0 30px;
    }
    
    .bangzhu-header h1 {
        font-size: 1.8rem;
    }
    
    .bangzhu-header p {
        font-size: 1rem;
    }
    
    .bangzhu-list {
        grid-template-columns: 1fr;
    }
    
    .bangzhu-subnav {
        flex-direction: column;
    }
    
    .bangzhu-subnav-item {
        margin-right: 0;
        margin-bottom: 10px;
    }
}



/*article*/

/* 基础样式 */
.neirong-content-wrapper {
    margin-top: 20px;
    padding: 0 20px;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: #333;
    line-height: 1.8;
}

.neirong-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 面包屑导航 */
.neirong-breadcrumb {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.neirong-breadcrumb a {
    color: #4D74AA;
    text-decoration: none;
    transition: color 0.3s;
}

.neirong-breadcrumb a:hover {
    color: #3F608D;
    text-decoration: underline;
}

/* 文章标题 */
.neirong-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 0 20px;
    color: #222;
    line-height: 1.4;
}

/* 文章元信息 */
.neirong-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
    font-size: 0.9rem;
    color: #666;
}

.neirong-meta-left,
.neirong-meta-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.neirong-meta-item {
    display: flex;
    align-items: center;
}

.neirong-icon {
    margin-right: 6px;
    color: #888;
    font-size: 0.9em;
}

/* 文章内容 */
.neirong-body {
    margin-bottom: 40px;
}

.neirong-body p {
    margin-bottom: 1.5em;
    font-size: 1rem;
    line-height: 1.8;
}

.neirong-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.neirong-body h2,
.neirong-body h3,
.neirong-body h4 {
    margin: 1.5em 0 0.8em;
    color: #222;
    font-weight: 600;
}

.neirong-body h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.neirong-body h3 {
    font-size: 1.3rem;
}

.neirong-body h4 {
    font-size: 1.1rem;
}

.neirong-body ul,
.neirong-body ol {
    margin: 1em 0;
    padding-left: 2em;
}

.neirong-body li {
    margin-bottom: 0.5em;
}

.neirong-body blockquote {
    border-left: 4px solid #4D74AA;
    background-color: #EDF1F7;
    padding: 15px 20px;
    margin: 20px 0;
    font-style: italic;
    color: #555;
}

/* 标签 */
.neirong-tags {
    display: flex;
    align-items: flex-start;
    margin: 40px 0;
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.neirong-tags-label {
    font-size: 0.9rem;
    color: #666;
    margin-right: 15px;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.neirong-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.neirong-tag-item {
    display: inline-block;
    padding: 5px 12px;
    background-color: #EDF1F7;
    color: #3F608D;
    border-radius: 4px;
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.3s, background-color 0.3s;
}

.neirong-tag-item:hover {
    background-color: #4D74AA;
    color: white;
}

/* 上一篇下一篇 */
.neirong-navigation {
    display: flex;
    justify-content: space-between;
    margin: 50px 0 30px;
}

.neirong-nav-prev,
.neirong-nav-next {
    flex: 1;
    padding: 15px;
    border-radius: 6px;
    transition: background-color 0.3s;
}

.neirong-nav-prev {
    margin-right: 15px;
    text-align: left;
}

.neirong-nav-next {
    margin-left: 15px;
    text-align: right;
}

.neirong-nav-prev:hover,
.neirong-nav-next:hover {
    background-color: #EDF1F7;
}

.neirong-nav-label {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 5px;
}

.neirong-nav-link {
    font-size: 0.95rem;
    color: #4D74AA;
    text-decoration: none;
    transition: color 0.3s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.neirong-nav-link:hover {
    color: #3F608D;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .neirong-content-wrapper {
        margin-top: 20px;
        padding: 0 15px;
    }
    
    .neirong-container {
        padding: 0;
    }
    
    .neirong-title {
        font-size: 1.5rem;
    }
    
    .neirong-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .neirong-meta-left,
    .neirong-meta-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .neirong-tags {
        flex-direction: column;
    }
    
    .neirong-tags-label {
        margin-bottom: 10px;
    }
    
    .neirong-navigation {
        flex-direction: column;
    }
    
    .neirong-nav-prev,
    .neirong-nav-next {
        margin: 0 0 15px 0;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .neirong-content-wrapper {
        margin-top: 20px;
    }
    
    .neirong-title {
        font-size: 1.3rem;
    }
    
    .neirong-meta-left {
        flex-direction: column;
        gap: 8px;
    }
    
    .neirong-body h2 {
        font-size: 1.3rem;
    }
    
    .neirong-body h3 {
        font-size: 1.1rem;
    }
}

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

.xiazai-breadcrumb {
    padding: 15px 0;
    background-color: #F4F7FA;
    border-bottom: 1px solid #eee;
}

.xiazai-breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
    list-style: none;
}

.xiazai-breadcrumb-item {
    display: flex;
    align-items: center;
    font-size: 14px;
}

.xiazai-breadcrumb-item + .xiazai-breadcrumb-item::before {
    content: "/";
    padding: 0 10px;
    color: #6c757d;
}

.xiazai-breadcrumb-link {
    color: #4D74AA;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.xiazai-breadcrumb-link:hover {
    color: #3F608D;
    text-decoration: underline;
}

.xiazai-breadcrumb-item.active {
    color: #5F6872;
}

.xiazai-content {
    padding: 48px 0 60px;
}

.xiazai-page-heading {
    max-width: 680px;
    margin: 0 auto 34px;
    text-align: center;
}

.xiazai-page-title {
    margin-bottom: 10px;
    color: #304869;
    font-size: 2rem;
    line-height: 1.3;
}

.xiazai-page-subtitle {
    color: #667085;
    font-size: 1rem;
}

.xiazai-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 0 -15px;
}

.xiazai-col-lg-4,
.xiazai-col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
    padding: 0 15px;
    margin-bottom: 30px;
}

.xiazai-card {
    height: 100%;
    overflow: hidden;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.xiazai-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.xiazai-icon-box {
    padding: 34px 30px;
    text-align: center;
}

.xiazai-icon {
    margin-bottom: 20px;
    color: #4D74AA;
    font-size: 50px;
}

.xiazai-title {
    margin-bottom: 15px;
    color: #333;
    font-size: 20px;
    font-weight: 600;
}

.xiazai-description {
    margin-bottom: 25px;
    color: #666;
    font-size: 15px;
    line-height: 1.6;
}

.xiazai-download-btn {
    display: inline-block;
    padding: 12px 30px;
    color: #fff;
    background-color: #4D74AA;
    border-radius: 6px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: background-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.xiazai-download-btn:hover {
    background-color: #3F608D;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(77, 116, 170, 0.3);
}

.ip-product-intro,
.modern-news,
.ip-footer {
    content-visibility: auto;
    contain-intrinsic-size: 1px 800px;
}

@media (max-width: 768px) {
    .xiazai-content {
        padding: 36px 0 44px;
    }

    .xiazai-col-lg-4,
    .xiazai-col-md-6 {
        flex-basis: 100%;
        max-width: 100%;
    }

    .xiazai-icon-box {
        padding: 28px 20px;
    }
}

@media (max-width: 576px) {
    .xiazai-breadcrumb {
        padding: 10px 0;
    }

    .xiazai-content {
        padding: 28px 0 34px;
    }

    .xiazai-page-title {
        font-size: 1.6rem;
    }

    .xiazai-icon {
        font-size: 40px;
    }

    .xiazai-description {
        font-size: 14px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}