/* 响应式样式 */

/* 基础设置 */
* {
    box-sizing: border-box;
}

/* 媒体查询 - 平板设备 */
@media screen and (max-width: 1024px) {
    /* 头部导航 */
    #A9-header .A9-header-con .A9-c-b {
        margin-left: 15px;
    }
    
    #A9-header .A9-header-con .A9-c-b .A9-nav .A9-first-sort > a {
        margin: 0 10px;
        font-size: 13px;
    }
    
    #A9-header .A9-header-con .A9-r-b .A9-search-box form input {
        width: 150px;
    }
    
    /* Banner区域 */
    .A9-BAR-ai-banner-container {
        padding: 20px;
    }
    
    .A9-BAR-left-nav {
        left: 40px;
        top: 40px;
    }
    
    .A9-BAR-main-content {
        padding: 60px 40px 100px;
        background-size: contain;
        background-position: right center;
    }
    
    .A9-BAR-text-section {
        width: 70%;
        margin-left: 20%;
    }
    
    .A9-BAR-main-title {
        font-size: 36px;
    }
    
    /* 背景装饰 */
    .A9-BAR-bg-decoration {
        width: 50%;
    }
    
    /* 导航卡片区域 */
    .nav-container {
        transform: translate(0, -45%);
        max-width: 800px;
    }
    
    .card {
        min-width: 180px;
        padding: 18px 16px;
    }
    
    /* 产品展示区域 */
    .A9-PRD {
        padding: 40px;
    }
    
    .A9-PRD-container {
        flex-direction: column;
    }
    
    .A9-PRD-nav-bar {
        flex-direction: row;
        width: 100%;
        overflow-x: auto;
        white-space: nowrap;
        border-right: none;
        border-bottom: 1px solid #e5e9f0;
        padding: 15px;
    }
    
    .A9-PRD-nav-item {
        white-space: nowrap;
        width: auto;
    }
    
    .A9-PRD-view-all-btn {
        margin-top: 0;
        width: auto;
    }
    
    .A9-PRD-content {
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    
    .A9-PRD-card {
        flex: 0 0 calc(50% - 30px);
        margin: 15px;
    }
    
    /* 新闻资讯区域 */
    .A9-NEW-news-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .A9-NEW-news-card:nth-child(3) {
        grid-column: 1 / -1;
    }
    
    /* 行业解决方案区域 */
    .industry-content-main {
        flex-direction: column;
    }
    
    .solution-card {
        width: 100%;
        margin-bottom: 30px;
    }
    
    .solution-image {
        width: 100%;
        height: 300px;
    }
    
    /* 为什么选择我们区域 */
    .A3-WHY-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 全球基础设施区域 */
    .infrastructure-content {
        flex-direction: column;
    }
    
    .infrastructure-stats {
        width: 100%;
        margin-bottom: 30px;
    }
    
    .world-map {
        width: 100%;
    }
}

/* 媒体查询 - 移动设备 */
@media screen and (max-width: 768px) {
    /* 隐藏桌面端导航，显示移动端导航 */
    #A9-header {
        display: none;
    }
    
    #A9-mobile-header {
        display: flex;
    }
    
    /* 调整内容区域的边距 */
    .A9-BAR-ai-banner-container,
    .nav-container,
    .A9-PRD,
    .industry-solutions-section,
    .A3-WHY-section-container,
    .global-infrastructure-section,
    .A9-NEW-news-section,
    .A3-REG-container {
        margin-top: 66px;
        padding: 20px;
    }
    
    /* Banner区域 */
    .A9-BAR-ai-banner-container {
        padding: 0;
        min-height: 400px;
    }
    
    .A9-BAR-bg-decoration {
        width: 100%;
        height: 100%;
        background-size: cover;
        background-position: center;
    }
    
    .A9-BAR-left-nav {
        position: relative;
        left: 0;
        top: 0;
        margin: 20px auto;
        max-width: 300px;
        background: rgba(255, 255, 255, 0.8);
        backdrop-filter: blur(10px);
        border-radius: 8px;
        padding: 10px;
        z-index: 10;
    }
    
    .A9-BAR-nav-item {
        padding: 8px 16px;
        margin-bottom: 8px;
        font-size: 14px;
    }
    
    .A9-BAR-main-content {
        padding: 40px 20px 60px;
        background: none;
        min-height: 350px;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
    }
    
    .A9-BAR-text-section {
        width: 100%;
        margin-left: 0;
        padding: 20px;
        background: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(10px);
        border-radius: 10px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .A9-BAR-main-title {
        font-size: 24px;
        line-height: 1.3;
        margin-bottom: 16px;
    }
    
    .A9-BAR-sub-title {
        font-size: 14px;
        line-height: 1.5;
        margin-bottom: 24px;
    }
    
    .A9-BAR-free-btn {
        padding: 12px 24px;
        font-size: 16px;
        width: 100%;
        max-width: 200px;
        text-align: center;
    }
    
    /* 导航卡片区域 */
    .nav-container {
        flex-direction: column;
        align-items: center;
        transform: translate(0, -30%);
    }
    
    .card {
        width: 100%;
        max-width: 300px;
        margin-bottom: 15px;
        padding: 16px 14px;
        height: auto;
        min-height: 80px;
    }
    
    .card-title {
        font-size: 16px;
    }
    
    .card-desc {
        font-size: 13px;
    }
    
    /* 产品展示区域 */
    .A9-PRD {
        padding: 20px;
    }
    
    .A9-PRD-nav-bar {
        padding: 10px;
        gap: 10px;
    }
    
    .A9-PRD-nav-item {
        font-size: 16px;
        padding: 8px 12px;
    }
    
    .A9-PRD-view-all-btn {
        font-size: 14px;
        padding: 8px 12px;
    }
    
    .A9-PRD-content-wrapper {
        padding: 20px;
    }
    
    .A9-PRD-card {
        flex: 0 0 100%;
        margin: 10px 0;
        padding: 20px;
    }
    
    .A9-PRD-card-title {
        font-size: 20px;
    }
    
    .A9-PRD-card-subtitle {
        font-size: 14px;
    }
    
    .A9-PRD-spec-item {
        font-size: 16px;
    }
    
    .A9-PRD-price {
        font-size: 28px;
    }
    
    .A9-PRD-buy-btn {
        padding: 10px 24px;
        font-size: 16px;
    }
    
    /* 新闻资讯区域 */
    .A9-NEW-news-grid {
        grid-template-columns: 1fr;
    }
    
    .A9-NEW-news-card {
        grid-column: 1;
    }
    
    /* 为什么选择我们区域 */
    .A3-WHY-features-grid {
        grid-template-columns: 1fr;
    }
    
    /* 全球基础设施区域 */
    .certifications-row {
        flex-wrap: wrap;
    }
    
    .certification-icon-small {
        flex: 0 0 calc(50% - 10px);
        margin-bottom: 20px;
    }
    
    /* 底部导航 */
    .footer-nav {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .nav-column {
        margin-bottom: 30px;
    }
}

/* 媒体查询 - 小屏幕移动设备 */
@media screen and (max-width: 480px) {
    /* 调整字体大小 */
    h1 {
        font-size: 24px !important;
    }
    
    h2 {
        font-size: 20px !important;
    }
    
    h3 {
        font-size: 18px !important;
    }
    
    p {
        font-size: 14px !important;
    }
    
    /* 调整按钮大小 */
    .A9-BAR-free-btn,
    .solution-btn,
    .A9-PRD-buy-btn,
    .A3-REG-button {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    /* 调整搜索框大小 */
    #header_search_input {
        width: 100% !important;
    }
}

/* 弹性布局辅助类 */
.flex {
    display: flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-column {
    flex-direction: column;
}

.justify-center {
    justify-content: center;
}

.align-center {
    align-items: center;
}

/* 响应式网格 */
.grid {
    display: grid;
}

/* 隐藏/显示类 */
.mobile-only {
    display: none;
}

@media screen and (max-width: 768px) {
    .mobile-only {
        display: block;
    }
    
    .desktop-only {
        display: none;
    }
}