/**
 * Header Navigation Styles
 * 完整的三级导航样式（PC/PAD/Mobile响应式）
 * 
 * @package Milestrong
 * @since 2.0.0
 */

/* ========== 基础重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS 变量默认值（会被 header.php 中的内联样式覆盖） */
/* 注意：这些默认值仅在后台设置未加载时使用，实际值由 header.php 动态生成 */

/* 让 body 不需要 padding-top，header 浮动在内容上方 */
body {
    padding-top: 0;
    margin: 0;
}

/* ========== 顶部导航栏核心样式 ========== */
.milestrong-header-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--header-bg-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--header-text-color);
    min-height: var(--header-height);
    height: auto;
    z-index: 9999;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    transition: all var(--animation-duration) ease;
    /* padding 由 header.php 动态控制 */
}

.milestrong-header-nav.sticky {
    position: fixed;
}

.milestrong-header-nav.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    height: 100%;
}

/* ========== PC/PAD 端布局 ========== */
.desktop-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    height: 100%;
    gap: 30px;
    flex-wrap: wrap;
}

/* Logo 样式 */
.header-logo {
    flex-shrink: 0;
    align-self: center;
}

.header-logo img {
    height: 60px;
    width: auto;
    display: block;
}

.header-logo .site-title {
    color: var(--header-text-color);
    text-decoration: none;
    font-size: 24px;
    font-weight: bold;
}

/* 主导航菜单 */
.main-navigation {
    flex: 1;
    display: flex;
    justify-content: center;
    align-self: center;
}

.main-menu {
    display: flex;
    list-style: none;
    gap: var(--menu-item-spacing);
    margin: 0;
    padding: 0;
}

.main-menu > li {
    position: relative;
    /* min-width 由 CSS 变量控制 */
}

.main-menu > li > a {
    color: var(--header-text-color);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    /* padding 由 CSS 变量控制 */
    display: block;
    transition: color var(--animation-duration) ease;
}

.main-menu > li > a:hover {
    color: var(--header-hover-color);
}

/* 二级菜单 - 全宽超级菜单 */
.main-menu .sub-menu {
    position: fixed !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    padding: 30px 0;
    border-radius: 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    display: block !important;
    z-index: 99999 !important;
    transition: opacity var(--animation-duration) ease, visibility var(--animation-duration) ease;
    /* top, background, min-height 由 header.php 的动态样式控制 */
}

/* 重要：hover时显示超级菜单 */
.main-menu > li.menu-item-has-children:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
}

/* 超级菜单内容容器 */
.sub-menu-container {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    width: 100%;
    position: relative;
    /* min-height 由 header.php 的动态样式控制 */
}

/* 三级菜单和图片区域之间的分隔线 */
.sub-menu-container::after {
    content: '';
    position: absolute;
    left: calc(220px + 20px + 360px + 60px + 20px);
    top: 0;
    bottom: 60px;
    width: 2px;
    background: #fff;
    pointer-events: none;
    z-index: 1;

}

/* 左侧：二级菜单列表 */
.sub-menu-left {
    min-width: 220px;
    width: 220px;
    flex-shrink: 0;
    align-self: flex-start;
}

.sub-menu-left .sub-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sub-menu-left .sub-menu-list > li {
    padding: 0;
    position: relative;
    margin-bottom: 3px;
}

.sub-menu-left .sub-menu-list > li > a {
    color: #ffffff !important;
    text-decoration: none;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    border-radius: 4px 0 0 4px;
}

.sub-menu-left .sub-menu-list > li > a .menu-text {
    flex: 1;
    text-align: left;
}

.sub-menu-left .sub-menu-list > li > a .menu-arrow {
    margin-left: 10px;
    flex-shrink: 0;
}

.sub-menu-left .sub-menu-list > li > a:hover,
.sub-menu-left .sub-menu-list > li.active > a {
    color: #017fff !important;
}

/* 中间：三级菜单区域 */
.sub-menu-middle {
    flex: 0 0 auto;
    width: 100%;
    max-width: 400px;
    min-width: 0;
    position: relative;
    padding: 0 60px;
    align-self: flex-start;
    /* min-height 由 header.php 的动态样式控制 */
}

/* 三级菜单容器 */
.sub-menu-middle .sub-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: none !important;
    flex-wrap: wrap;
    gap: 6px;
    align-content: flex-start;
}

.sub-menu-middle .sub-menu-list[style*="display: block"] {
    display: flex !important;
}

/* 三级菜单项 */
.sub-menu-middle .sub-menu-list > li {
    padding: 0;
    display: block !important;
    /* width 由 header.php 的动态样式控制 */
}

.sub-menu-middle .sub-menu-list > li.no-submenu {
    width: 100%;
    text-align: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.8) !important;
}

.sub-menu-middle .sub-menu-list > li > a {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 8px 12px;
    border-radius: 4px;
    width: 100%;
    color: #ffffff !important;
    text-decoration: none;
    font-size: 13px;
    transition: all 0.3s ease;
    background: transparent;
}

.sub-menu-middle .sub-menu-list > li > a:hover {
    background: transparent !important;
    color: #017fff !important;
}

.sub-menu-middle .sub-menu-list > li > a:hover .menu-item-text {
    color: #017fff !important;
}

/* 三级菜单小图标 - 隐藏 */
.sub-menu-middle .menu-item-image {
    display: none;
}

.sub-menu-middle .menu-item-text {
    flex: 1;
    line-height: 1.4;
    color: inherit !important;
    transition: color 0.3s ease;
}

/* 右侧：大图预览区域 */
.sub-menu-right {
    width: 300px;
    flex-shrink: 0;
    min-height: 280px;
    background: transparent;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-left: 20px;
    align-self: flex-start;
}

.sub-menu-right img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    object-fit: cover;
    opacity: 0;
    transition: opacity var(--animation-duration) ease;
}

.sub-menu-right img.active {
    opacity: 1;
    z-index: 1;
}

.sub-menu-right .no-image-placeholder {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    text-align: center;
}

/* 右侧功能区 */
.header-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    flex-shrink: 0;
}

/* 顶部一行：搜索、语言、Contact Us */
.header-actions-top {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* 底部一行：电话和邮箱 */
.header-actions-bottom {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-phone,
.header-email {
    color: var(--header-text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    transition: color var(--animation-duration) ease;
}

.header-phone:hover,
.header-email:hover {
    color: var(--header-hover-color);
}

.header-icon-btn {
    background: none;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.header-icon-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 语言下拉菜单 */
.language-dropdown {
    position: relative;
}

.language-options {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    list-style: none;
    min-width: 140px;
    border-radius: 8px;
    padding: 10px 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.language-options.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-options li a {
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    display: block;
    font-size: 14px;
    transition: all 0.3s ease;
}

.language-options li a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #00a32a;
}

/* Contact Us 按钮 */
.contact-us-btn {
    background: linear-gradient(135deg, #00a32a, #0073aa);
    color: #fff;
    border: none;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.contact-us-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* ========== 移动端布局 ========== */
.mobile-header {
    display: none;
}

/* ========== 搜索弹窗 ========== */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-container {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.search-overlay.active .search-container {
    transform: scale(1);
}

.search-container h3 {
    margin-bottom: 25px;
    font-size: 28px;
    color: #333;
}

.search-container input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #ddd;
    border-radius: 30px;
    font-size: 16px;
    margin-bottom: 20px;
    transition: border-color 0.3s ease;
}

.search-container input:focus {
    outline: none;
    border-color: #00a32a;
}

.search-container button {
    background: linear-gradient(135deg, #00a32a, #0073aa);
    color: #fff;
    border: none;
    padding: 12px 40px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.search-container button:hover {
    opacity: 0.9;
}

.close-search {
    position: absolute;
    top: 30px;
    right: 30px;
    color: #fff;
    font-size: 40px;
    background: none;
    border: none;
    cursor: pointer;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.close-search:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ========== 移动端菜单面板 ========== */
.mobile-menu-panel {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(20px);
    z-index: 99998;
    overflow-y: auto;
    padding: 80px 20px 30px;
    transition: right 0.4s ease;
}

.mobile-menu-panel.active {
    right: 0;
}

.mobile-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-menu li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu li a {
    color: #fff;
    text-decoration: none;
    padding: 15px 10px;
    display: block;
    font-size: 16px;
    transition: all 0.3s ease;
}

.mobile-menu li a:hover {
    background: rgba(255, 255, 255, 0.1);
    padding-left: 20px;
}

.mobile-menu .sub-menu {
    list-style: none;
    padding-left: 20px;
    display: none;
}

.mobile-menu .menu-item-has-children.open > .sub-menu {
    display: block;
}

/* 复制通知 */
.copy-notification {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 999999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    text-align: center;
    max-width: 90%;
}

.copy-notification.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ========== PAD 端响应式 (768px-1023px) ========== */
@media (min-width: 768px) and (max-width: 1023px) {
    .milestrong-header-nav {
        min-height: 70px;
        padding: 12px 0;
    }
    
    body {
        padding-top: 0;
    }
    
    .header-container {
        padding: 0 20px;
    }
    
    .desktop-header {
        gap: 20px;
    }
    
    .header-logo img {
        height: 50px;
    }
    
    .header-logo .site-title {
        font-size: 20px;
    }
    
    .main-menu {
        gap: 20px;
    }
    
    .main-menu > li > a {
        font-size: 14px;
        padding: 8px 12px;
    }
    
    .header-actions {
        gap: 10px;
    }
    
    .header-actions-top,
    .header-actions-bottom {
        gap: 12px;
    }
    
    .header-phone span,
    .header-email span {
        display: none;
    }
    
    .header-icon-btn {
        width: 36px;
        height: 36px;
    }
    
    .header-icon-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .contact-us-btn {
        padding: 8px 18px;
        font-size: 13px;
    }
    
    /* 超级菜单调整 */
    .mega-menu-content {
        padding: 0 30px;
        gap: 30px;
        min-height: 350px;
    }
    
    .mega-menu-left {
        min-width: 220px;
    }
    
    .secondary-menu > li > a {
        padding: 10px 15px;
        font-size: 15px;
    }
    
    .tertiary-menu > li {
        width: calc((100% / var(--submenu-columns)) - 8px);
    }
    
    .tertiary-menu > li > a {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    .tertiary-menu .menu-item-image {
        width: 45px;
        height: 34px;
    }
    
    .submenu-image-preview {
        width: 280px;
        min-height: 300px;
    }
    
    /* 语言下拉菜单调整 */
    .language-options {
        min-width: 120px;
    }
    
    .language-options li a {
        padding: 8px 16px;
        font-size: 13px;
    }
}

/* ========== 手机端响应式 (≤767px) ========== */
@media (max-width: 767px) {
    body {
        padding-top: 160px; /* 适配移动端三栏导航 */
    }
    
    .milestrong-header-nav {
        height: auto;
    }
    
    .header-container {
        padding: 0;
    }
    
    /* 隐藏桌面端 */
    .desktop-header {
        display: none;
    }
    
    /* 显示移动端 */
    .mobile-header {
        display: block;
        padding: 12px 15px;
    }
    
    /* 第一块：Logo + 图标 */
    .mobile-header-top {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 12px;
        padding-bottom: 12px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .mobile-logo {
        flex-shrink: 0;
    }
    
    .mobile-logo img {
        height: 40px;
        width: auto;
        display: block;
    }
    
    .mobile-logo .site-title {
        color: #fff;
        text-decoration: none;
        font-size: 20px;
        font-weight: bold;
        display: block;
    }
    
    .mobile-icons {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    
    .mobile-icon-btn {
        background: none;
        border: none;
        color: #fff;
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        transition: background 0.3s ease;
        cursor: pointer;
        padding: 0;
    }
    
    .mobile-icon-btn:active {
        background: rgba(255, 255, 255, 0.3);
    }
    
    .mobile-icon-btn svg {
        width: 20px;
        height: 20px;
    }
    
    /* 语言下拉菜单移动端 */
    .mobile-header .language-dropdown {
        position: relative;
    }
    
    .mobile-header .language-options {
        right: 0;
        left: auto;
    }
    
    /* 菜单按钮 */
    .mobile-menu-toggle {
        background: none;
        border: none;
        width: 36px;
        height: 36px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        cursor: pointer;
        padding: 0;
    }
    
    .mobile-menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: #fff;
        transition: all 0.3s ease;
        border-radius: 2px;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* 第二块：Contact Us 按钮 */
    .mobile-contact-us {
        margin-bottom: 12px;
        padding: 0 5px;
    }
    
    .mobile-contact-us .contact-us-btn {
        padding: 10px 30px;
        width: auto;
        display: inline-block;
        font-size: 14px;
        border-radius: 25px;
    }
    
    /* 第三块：电话 + 邮箱 */
    .mobile-contact-info {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .mobile-phone,
    .mobile-email {
        color: #fff;
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        flex: 1;
        padding: 8px 10px;
        background: rgba(255, 255, 255, 0.05);
        border-radius: 8px;
        transition: background 0.3s ease;
    }
    
    .mobile-phone:active,
    .mobile-email:active {
        background: rgba(255, 255, 255, 0.15);
    }
    
    .mobile-phone svg,
    .mobile-email svg {
        flex-shrink: 0;
        width: 16px;
        height: 16px;
    }
    
    .mobile-phone span,
    .mobile-email span {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1;
    }
    
    /* 移动端菜单面板调整 */
    .mobile-menu-panel {
        width: 85%;
        max-width: 320px;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
    }
    
    .mobile-menu {
        padding: 0;
    }
    
    .mobile-menu li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    
    .mobile-menu li:last-child {
        border-bottom: none;
    }
    
    .mobile-menu li a {
        padding: 14px 15px;
        font-size: 15px;
    }
    
    .mobile-menu .sub-menu {
        background: rgba(255, 255, 255, 0.05);
        padding-left: 15px;
    }
    
    .mobile-menu .sub-menu li a {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    /* 搜索弹窗移动端调整 */
    .search-container {
        padding: 30px 20px;
        width: 92%;
        max-width: 500px;
        border-radius: 16px;
    }
    
    .search-container h3 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .search-container input {
        padding: 12px 18px;
        font-size: 15px;
        margin-bottom: 15px;
    }
    
    .search-container button {
        padding: 10px 35px;
        font-size: 15px;
    }
    
    .close-search {
        top: 15px;
        right: 15px;
        font-size: 32px;
        width: 45px;
        height: 45px;
    }
}

/* ========== 超小屏幕 (≤480px) ========== */
@media (max-width: 480px) {
    body {
        padding-top: 170px; /* 增加顶部间距 */
    }
    
    .mobile-header {
      /*  padding: 10px 12px;*/
    }
    
    .mobile-logo img {
        height: 35px;
    }
    
    .mobile-logo .site-title {
        font-size: 18px;
    }
    
    .mobile-icons {
        gap: 8px;
    }
    
    .mobile-icon-btn {
        width: 32px;
        height: 32px;
    }
    
    .mobile-icon-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .mobile-menu-toggle {
        width: 32px;
        height: 32px;
    }
    
    .mobile-menu-toggle span {
        width: 20px;
    }
    
    .mobile-contact-us {
        text-align: center !important;
    }
    
    .mobile-contact-us .contact-us-btn {
        width: 100%;
        padding: 10px 20px;
        font-size: 13px;
    }
    
    .mobile-contact-info {
        flex-direction: column;
        gap: 8px;
    }
    
    .mobile-phone,
    .mobile-email {
        width: 100%;
        justify-content: center;
        font-size: 11px;
        padding: 10px 12px;
    }
    
    .mobile-phone svg,
    .mobile-email svg {
        width: 14px;
        height: 14px;
    }
    
    /* 搜索弹窗超小屏幕调整 */
    .search-container {
        padding: 25px 15px;
        width: 95%;
        border-radius: 12px;
    }
    
    .search-container h3 {
        font-size: 20px;
        margin-bottom: 18px;
    }
    
    .search-container input {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    .search-container button {
        padding: 9px 30px;
        font-size: 14px;
    }
    
    .close-search {
        top: 10px;
        right: 10px;
        font-size: 28px;
        width: 40px;
        height: 40px;
    }
    
    /* 移动端菜单面板超小屏幕 */
    .mobile-menu-panel {
        width: 90%;
        max-width: 280px;
        padding: 70px 15px 25px;
    }
    
    .mobile-menu li a {
        padding: 12px 12px;
        font-size: 14px;
    }
    
    .mobile-menu .sub-menu li a {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    /* 复制通知超小屏幕 */
    .copy-notification {
        padding: 15px 20px;
        font-size: 14px;
        max-width: 95%;
    }
}

/* ========== 防止菜单打开时页面滚动 ========== */
body.mobile-menu-open {
    overflow: hidden;
}

/* ========== 触摸设备优化 ========== */
.touch-device .mobile-icon-btn.touching,
.touch-device .mobile-menu-toggle.touching,
.touch-device .mobile-phone.touching,
.touch-device .mobile-email.touching {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(0.95);
}

.touch-device .contact-us-btn.touching {
    opacity: 0.85;
    transform: scale(0.98);
}

/* ========== 平滑滚动 ========== */
html {
    scroll-behavior: smooth;
}

/* ========== 移动端菜单面板遮罩 ========== */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99997;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

/* ========== 改进的移动端菜单面板 ========== */
@media (max-width: 767px) {
    .mobile-menu-panel {
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.6);
    }
    
    /* 移动端子菜单指示器 */
    .mobile-menu .menu-item-has-children > a::after {
        content: '\203A';
        float: right;
        font-size: 20px;
        font-weight: bold;
        transition: transform 0.3s ease;
        display: inline-block;
    }
    
    .mobile-menu .menu-item-has-children.open > a::after {
        transform: rotate(90deg);
    }
}

/* ========== 横屏模式优化 ========== */
@media (max-width: 767px) and (orientation: landscape) {
    body {
        padding-top: 140px;
    }
    
    .mobile-header {
        padding: 8px 12px;
    }
    
    .mobile-header-top {
        margin-bottom: 8px;
        padding-bottom: 8px;
    }
    
    .mobile-contact-us {
        margin-bottom: 8px;
    }
    
    .mobile-contact-info {
        padding-top: 8px;
    }
    
    .mobile-logo img {
        height: 32px;
    }
    
    .mobile-menu-panel {
        padding: 60px 15px 20px;
    }
}


/* ========================================
   iPad Mini 专属适配 (768px)
   ======================================== */
@media (min-width: 768px) and (max-width: 768px) {
    /* iPad Mini 使用移动端布局 */
    body {
        padding-top: 180px !important;
    }
    
    .milestrong-header-nav {
        height: auto;
    }
    
    .header-container {
        padding: 0;
    }
    
    /* 隐藏桌面端 */
    .desktop-header {
        display: none !important;
    }
    
    /* 显示移动端 */
    .mobile-header {
        display: block !important;
        padding: 15px 20px;
    }
    
    /* 第一块：Logo + 图标 */
    .mobile-header-top {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 15px;
        padding-bottom: 15px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .mobile-logo img {
        height: 50px;
        width: auto;
    }
    
    .mobile-icons {
        display: flex;
        align-items: center;
        gap: 15px;
    }
    
    /* 图标按钮 - 透明背景 */
    .mobile-icon-btn {
        width: 44px;
        height: 44px;
        background: transparent !important;
        border: none;
        border-radius: 8px;
    }
    
    .mobile-icon-btn:hover,
    .mobile-icon-btn:active {
        background: rgba(255, 255, 255, 0.1) !important;
    }
    
    .mobile-icon-btn img {
        width: 24px;
        height: 24px;
    }
    
    .mobile-menu-toggle {
        width: 44px;
        height: 44px;
        background: transparent !important;
        border: none !important;
        border-radius: 8px;
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        gap: 6px !important;
        padding: 0 !important;
        cursor: pointer;
        position: relative;
        z-index: 10;
    }
    
    .mobile-menu-toggle:hover,
    .mobile-menu-toggle:active {
        background: rgba(255, 255, 255, 0.1) !important;
    }
    
    .mobile-menu-toggle span {
        width: 28px !important;
        height: 3px !important;
        background: #ffffff !important;
        display: block !important;
        border-radius: 2px !important;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* 第二块：Contact Us 按钮 - 确保显示 */
    .mobile-contact-us {
        display: block !important;
        margin-bottom: 15px;
        padding: 0 5px;
        text-align: center;
    }
    
    .mobile-contact-us .contact-us-btn {
        padding: 12px 40px;
        font-size: 15px;
        display: inline-block;
    }
    
    /* 第三块：电话 + 邮箱 - 白色文字 */
    .mobile-contact-info {
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        gap: 15px;
        padding-top: 15px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .mobile-phone,
    .mobile-email {
        flex: 1;
        padding: 12px 15px;
        font-size: 14px;
        gap: 10px;
        color: #ffffff !important;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    
    .mobile-phone:hover,
    .mobile-email:hover {
        background: rgba(255, 255, 255, 0.15);
    }
    
    .mobile-phone span,
    .mobile-email span {
        color: #ffffff !important;
    }
    
    .mobile-phone img {
        width: 18px;
        height: 18px;
        filter: brightness(0) invert(1);
    }
    
    .mobile-email svg {
        width: 18px;
        height: 18px;
        fill: #ffffff !important;
    }
    
    /* 语言下拉菜单 */
    .mobile-header .language-dropdown {
        position: relative;
    }
    
    .mobile-header .language-options {
        min-width: 160px;
        right: 0;
    }
    
    .mobile-header .language-options li a {
        padding: 12px 20px;
        font-size: 15px;
    }
    
    /* 移动端菜单面板 */
    .mobile-menu-panel {
        width: 75%;
        max-width: 400px;
        padding: 90px 30px 40px;
    }
    
    .mobile-menu li a {
        padding: 16px 20px;
        font-size: 16px;
    }
    
    .mobile-menu .sub-menu li a {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    /* iPad Mini 子菜单样式 */
    .mobile-menu .sub-menu {
        background: rgba(255, 255, 255, 0.05);
        padding-left: 20px;
        display: none;
    }
    
    .mobile-menu .menu-item-has-children.open > .sub-menu {
        display: block;
    }
}
    
    /* iPad Mini 也显示子菜单指示器 */
    .mobile-menu .menu-item-has-children > a::after {
        content: '\203A';
        float: right;
        font-size: 20px;
        font-weight: bold;
        transition: transform 0.3s ease;
        display: inline-block;
    }
    
    .mobile-menu .menu-item-has-children.open > a::after {
        transform: rotate(90deg);
    }
}

/* ========================================
   iPad Mini 横屏模式 (1024x768)
   ======================================== */
@media (min-width: 1024px) and (max-width: 1024px) and (max-height: 768px) {
    /* 横屏时使用桌面端布局，但调整间距 */
    .desktop-header {
        gap: 15px;
    }
    
    .header-logo img {
        height: 45px;
    }
    
    .main-menu {
        gap: 15px;
    }
    
    .main-menu > li > a {
        font-size: 13px;
        padding: 8px 10px;
    }
    
    .header-actions {
        gap: 8px;
    }
    
    .header-actions-top,
    .header-actions-bottom {
        gap: 10px;
    }
    
    .header-icon-btn {
        width: 34px;
        height: 34px;
    }
    
    .contact-us-btn {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .header-phone,
    .header-email {
        font-size: 12px;
        gap: 6px;
    }
    
    .header-phone img,
    .header-email svg {
        width: 16px;
        height: 16px;
    }
}