/* ========== 统一导航栏样式 ========== */

.top-bar {
    background: var(--dark-blue);
    color: var(--white);
    padding: 12px 0;
    font-size: 14px;
    right: 25px;
}

.top-bar-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info {
    display: flex;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.language-switch {
    color: var(--white);
    text-decoration: none;
    padding-left: 20px;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    transition: color 0.3s ease;
}

.language-switch:hover {
    color: var(--secondary-blue);
}

/* 主导航 - 支持二级导航 */
.main-nav {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.logo-text {
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 40px;
    align-items: center;
    height: 80px;
}

.nav-item {
    position: relative;
    height: 80px;
    display: flex;
    align-items: center;
}

.nav-link {
    font-size: 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
    padding: 28px 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 二级导航下拉菜单 */
.has-submenu > .nav-link::before {
    content: '▼';
    font-size: 8px;
    transition: transform 0.3s ease;
}

.has-submenu:hover > .nav-link::before {
    transform: rotate(180deg);
}

.submenu {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--white);
    min-width: 220px;
    border-radius: 8px;
    box-shadow: var(--shadow-heavy);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 12px 0;
    z-index: 1001;
}

.nav-item:hover > .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.submenu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid var(--white);
}

.submenu-item {
    position: relative;
}

.submenu-link {
    display: block;
    padding: 12px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.submenu-link:hover {
    background: var(--gray-light);
    color: var(--primary-blue);
    padding-left: 32px;
}

.submenu-link::after {
    content: '→';
    opacity: 0;
    transition: all 0.2s ease;
}

.submenu-link:hover::after {
    opacity: 1;
}

/* 三级导航 */
.has-submenu-3 > .submenu-link::before {
    content: '▶';
    font-size: 8px;
    margin-right: 8px;
}

.submenu-3 {
    position: absolute;
    top: 0;
    left: 100%;
    margin-left: 12px;
    background: var(--white);
    min-width: 200px;
    border-radius: 8px;
    box-shadow: var(--shadow-heavy);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 12px 0;
    z-index: 1002;
}

.submenu-item:hover > .submenu-3 {
    opacity: 1;
    visibility: visible;
    left: calc(100% + 12px);
}

.submenu-3::before {
    content: '';
    position: absolute;
    top: 15px;
    left: -8px;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 8px solid var(--white);
}

.submenu-3-link {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.submenu-3-link:hover {
    background: var(--gray-light);
    color: var(--primary-blue);
    padding-left: 28px;
}

.submenu-divider {
    height: 1px;
    background: var(--gray-medium);
    margin: 8px 0;
}

.submenu-heading {
    padding: 8px 24px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 12px 32px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.4);
}

/* ========== 统一底部样式 ========== */

.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: 80px 40px 40px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 24px;
    color: var(--white);
}

.footer-section p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

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

.footer-links a:hover {
    color: var(--primary-blue);
}

/* 二维码区域 */
.qr-codes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.qr-item {
    text-align: center;
}

.qr-code {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.qr-item:hover .qr-code {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-blue);
    transform: scale(1.05);
}

.qr-item p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
    text-align: center;
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 18px;
}

.social-link:hover {
    background: var(--primary-blue);
    transform: translateY(-3px);
}

/* ========== 响应式设计 ========== */

@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }

    .nav-links {
        display: none;
    }

    /* 移动端菜单按钮显示 */
    .mobile-menu-button {
        display: block !important;
    }

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

    .footer-copyright {
        font-size: 12px;
    }

    .social-links {
        gap: 12px;
    }

    .social-link {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .qr-codes {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .qr-code {
        width: 70px;
        height: 70px;
        font-size: 28px;
    }

    .qr-item p {
        font-size: 11px;
    }
}
/* ========== 移动端侧滑菜单样式 ========== */

/* 移动端菜单按钮 */
.mobile-menu-button {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    position: relative;
    z-index: 2001;
    transition: transform 0.3s ease;
}

.mobile-menu-button:hover {
    transform: scale(1.1);
}

.mobile-menu-button .hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: all 0.3s ease;
}

.mobile-menu-button .hamburger::before,
.mobile-menu-button .hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

.mobile-menu-button .hamburger::before {
    top: -8px;
}

.mobile-menu-button .hamburger::after {
    bottom: -8px;
}

/* 激活状态的汉堡按钮 */
.mobile-menu-button.active .hamburger {
    background: transparent;
}

.mobile-menu-button.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-button.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* 侧滑菜单容器 */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    max-width: 85%;
    height: 100%;
    background: white;
    z-index: 2000;
    padding: 80px 0 30px;
    overflow-y: auto;
    transition: right 0.3s ease;
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.15);
}

.mobile-menu.active {
    display: block;
    right: 0;
}

/* 移动端菜单项 */
.mobile-nav-item {
    border-bottom: 1px solid var(--gray-medium);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.mobile-nav-link:hover {
    background: var(--gray-light);
    color: var(--primary-blue);
    padding-left: 32px;
}

.mobile-nav-link .arrow {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.mobile-nav-item.open .mobile-nav-link .arrow {
    transform: rotate(180deg);
}

/* 移动端子菜单 */
.mobile-submenu {
    display: none;
    background: var(--gray-light);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-submenu.open {
    display: block;
    max-height: 500px;
}

.mobile-submenu-link {
    display: block;
    padding: 14px 24px 14px 40px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
}

.mobile-submenu-link:hover {
    background: white;
    color: var(--primary-blue);
    padding-left: 48px;
}

/* 移动端CTA按钮 */
.mobile-cta {
    margin: 20px 24px;
}

.mobile-cta a {
    display: block;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: white;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.mobile-cta a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.4);
}

/* 禁止页面滚动 */
body.menu-open {
    overflow: hidden;
}

/* ========== 导航栏滚动效果 ========== */

.main-nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.main-nav.scrolled .nav-link {
    color: var(--text-primary);
}

.main-nav.scrolled .nav-link:hover,
.main-nav.scrolled .nav-link.active {
    color: var(--primary-blue);
}

/* ========== 图片懒加载样式 ========== */

.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
    filter: blur(10px);
}

.lazy-load.loaded {
    opacity: 1;
    filter: blur(0);
}

/* 懒加载占位符 */
.lazy-placeholder {
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.lazy-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    100% {
        left: 100%;
    }
}

.lazy-placeholder::after {
    content: '📷';
    font-size: 48px;
    opacity: 0.3;
}

/* ========== 响应式调整 ========== */

@media (max-width: 768px) {
    .mobile-menu-button {
        display: block;
    }

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

    .mobile-menu {
        display: block;
    }

    .nav-links {
        display: none;
    }

    /* 顶部信息栏在移动端隐藏 */
    .top-bar {
        display: none;
    }

    /* 调整导航栏高度 */
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
    }

    .nav-content {
        padding: 0 20px;
    }

    /* 添加顶部占位，防止内容被导航栏遮挡 */
    body {
        padding-top: 80px;
    }

    /* 产品板块响应式布局 */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-module {
        min-height: auto;
        flex-direction: column;
    }

    .product-module.left-layout .product-visual,
    .product-module.right-layout .product-visual {
        width: 100%;
        min-height: 220px;
        order: -1;
    }

    .product-module.left-layout .product-info,
    .product-module.right-layout .product-info {
        width: 100%;
        padding: 25px 20px;
    }

    .product-visual-large {
       width: 300px;
        height: 300px;
    }

    .product-display-monitor {
        width: 240px;
        height: 160px;
    }

    .product-display-device {
        width: 120px;
        height: 180px;
        bottom: -40px;
        right: -20px;
    }
}

@media (max-width: 480px) {
    .mobile-menu {
        width: 100%;
        max-width: 100%;
    }

    .mobile-nav-link {
        font-size: 15px;
        padding: 14px 20px;
    }

    /* 产品板块小屏优化 */
    .products-section {
        padding: 60px 20px;
    }

    .product-badge {
        font-size: 11px;
        padding: 4px 10px;
    }

    .product-model {
        font-size: 14px;
        padding: 4px 10px;
    }

    .product-name {
        font-size: 24px;
        margin-bottom: 15px;
    }

    .product-features {
        gap: 8px;
        margin-bottom: 20px;
    }

    .product-features li {
        font-size: 13px;
        padding-left: 24px;
    }

    .product-cta {
        width: 100%;
       text-align: center;
        font-size: 14px;
    }

    .product-visual-large {
     
    }
.product-module.right-layout {
    display: flex
;
    flex-direction: column;
    align-items: center;
    padding: 0;
}.cases-section {
    padding: 10px 10px;
    background: var(--gray-light);
}

    .product-display-monitor {
        width: 180px;
        height: 120px;
    }

    .product-display-monitor::before {
        width: 60px;
        height: 6px;
        bottom: -15px;
    }

    .product-display-device {
        width: 90px;
        height: 140px;
        bottom: -30px;
        right: -15px;
    }
}

    .mobile-submenu-link {
        font-size: 13px;
        padding: 12px 20px 12px 36px;
    }
}

/* ========== 首页Banner CTA按钮样式 ========== */
.banner-cta {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    pointer-events: auto;
}

.banner-button {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: white;
    padding: 16px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.5);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    outline: none;
    position: relative;
    z-index: 51;
}

.banner-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 102, 204, 0.6);
    border-color: rgba(255, 255, 255, 0.6);
}

.arrow-icon {
    transition: transform 0.3s ease;
    font-style: normal;
    display: inline-block;
    font-weight: bold;
}

.banner-button:hover .arrow-icon {
    transform: translateX(8px);
}

/* 确保按钮在所有背景层之上 */
.banner-button:active {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 102, 204, 0.5);
}

/* Banner按钮响应式调整 */
@media (max-width: 768px) {
    .banner-cta {
        bottom: 30px;
    }

    .banner-button {
        padding: 12px 30px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .banner-cta {
        bottom: 20px;
    }

    .banner-button {
        padding: 10px 24px;
        font-size: 14px;
    }
}

/* ========== Banner背景图片优化样式 ========== */
.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;

}




/* 确保hero-content在所有背景层之上 */
.hero-content {
        top: 20%;
    position: relative;
    z-index: 10;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* 调整标题和副标题颜色，在深色背景上更清晰 */
.hero-title {
    color: rgba(0, 0, 0, 1);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
   color: rgb(18 112 209);
    text-shadow: 0 2px 10px rgb(19 113 210);
}

.hero-subtitle .highlight {
    color: var(--white);
    font-weight: 700;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}