body {
/* 基础样式重置，增强跨浏览器兼容性 */
* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    height: auto;
    margin: 0;
    padding: 0;
    font-size: 14px;
    line-height: 1.4285em;
    font-family: 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif; /* 回退字体 */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* 确保在所有浏览器中保持一致的行为 */
button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* 触摸设备优化 */
button, a, input[type="button"], input[type="submit"] {
    -webkit-tap-highlight-color: transparent;
}

.menu {
    border-radius: 0;
    border: none;
    box-shadow: none;
    transition: box-shadow 0.5s ease, padding 0.5s ease;
    -webkit-transition: box-shadow 0.5s ease, padding 0.5s ease;
    -moz-transition: box-shadow 0.5s ease, padding 0.5s ease;
    -o-transition: box-shadow 0.5s ease, padding 0.5s ease;
}

.menu .item img.logo {
    margin-right: 1.5em !important;
}

.main.container {
    margin-top: 7em;
    padding: 0 15px;
}

#mailcard {
    width: 100% !important;
    word-wrap: break-word;
    -webkit-hyphens: auto;
    -moz-hyphens: auto;
    -ms-hyphens: auto;
    hyphens: auto;
}

#shortid {
    -webkit-user-select: initial;
    -moz-user-select: initial;
    -ms-user-select: initial;
    user-select: initial;
    width: 100%;
    max-width: 400px;
}

.mailaddress {
    font-size: 1.14285714rem !important;
}

/* 表格响应式优化 */
.mail-table {
    width: 100%;
    border-collapse: collapse;
}

/* 针对移动设备的表格优化 */
@media (max-width: 768px) {
    .mail-table-wrapper {
        overflow-x: auto;
        display: block;
    }
}

/* 语言选择器兼容性优化 */
.language-selector {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

/* 弹窗样式的兼容性改进 */
#emailModal {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
}

/* 增强响应式设计 - 小型移动设备 */
@media (max-width: 480px) {
    .main.container {
        margin-top: 3em;
    }
    
    .email-input-container input#shortid {
        width: 100%;
        max-width: none;
        font-size: 1rem;
    }
    
    .mail-table {
        font-size: 0.8rem;
    }
    
    .mail-table th, .mail-table td {
        padding: 8px 4px;
    }
    
    .email-display {
        -webkit-flex-direction: column;
        -moz-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
    }
    
    .email-actions {
        margin-top: 10px;
        margin-left: 0;
        -webkit-flex-wrap: wrap;
        -moz-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
        -webkit-justify-content: center;
        -moz-justify-content: center;
        -ms-justify-content: center;
        justify-content: center;
    }
    
    #domainSelector {
        width: 100%;
        max-width: none;
        margin: 10px auto;
    }
    
    .copy-button {
        width: 100%;
        max-width: 200px;
        margin: 5px auto;
    }
    
    .custom-domain-container {
        padding: 0 10px;
    }
    
    .domain-input-group {
        -webkit-flex-direction: column;
        -moz-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 10px;
    }
    
    .domain-input-group input, .domain-input-group button {
        width: 100%;
    }
}

/* 增强响应式设计 - 中型移动设备 */
@media (max-width: 768px) {
    .main.container {
        margin-top: 4em;
    }
    
    .email-display {
        -webkit-flex-direction: column;
        -moz-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-align-items: center;
        -moz-align-items: center;
        -ms-align-items: center;
        align-items: center;
    }
    
    .email-actions {
        margin-top: 15px;
        margin-left: 0;
        width: 100%;
        max-width: 400px;
        -webkit-justify-content: center;
        -moz-justify-content: center;
        -ms-justify-content: center;
        justify-content: center;
    }
    
    .email-input-container input#shortid {
        width: 100%;
        max-width: 400px;
    }
    
    .mail-table {
        font-size: 0.9rem;
    }
    
    .mail-table th, .mail-table td {
        padding: 10px;
    }
    
    /* 自定义域名区域响应式 */
    .domain-input-group {
        -webkit-flex-wrap: wrap;
        -moz-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
        -webkit-justify-content: center;
        -moz-justify-content: center;
        -ms-justify-content: center;
        justify-content: center;
    }
}

/* 平板和小型桌面设备 */
@media (min-width: 769px) and (max-width: 1024px) {
    .main.container {
        margin-top: 5em;
        max-width: 90%;
    }
}

/* 确保在高DPI屏幕上的清晰度 */
@media (-webkit-device-pixel-ratio: 2), (resolution: 192dpi) {
    img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 辅助功能优化 */
@media (prefers-reduced-motion: reduce) {
    * {
        -webkit-animation-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        -webkit-animation-iteration-count: 1 !important;
        animation-iteration-count: 1 !important;
        -webkit-transition-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}