/* 移动端优先的麦克风测试工具样式 */

:root {
  /* 基础配色方案 */
  --color-background: #F5F6FA;      /* 页面背景 */
  --color-primary: #4A90E2;         /* 主色（按钮/高亮）*/
  --color-primary-dark: #3A7BD5;    /* 主色深色版本 */
  --color-primaryText: #FFFFFF;     /* 主按钮文字 */
  --color-titleText: #4A90E2;       /* 标题文字 */
  --color-bodyText: #3D4451;        /* 正文文字 */
  --color-linkText: #4A90E2;        /* 链接文字 */
  --color-success: #00C48C;         /* 辅助按钮/状态好 */
  --color-danger: #FF4C4C;          /* 错误/警示颜色 */
  --color-border: #E0E4EC;          /* 分隔线/边框 */
  --color-cardBackground: #FFFFFF;  /* 卡片背景 */
  
  /* 兼容性变量 */
  --color-secondary: #4A90E2;
  --color-bg-light: #F5F6FA;
  --color-bg-card: #FFFFFF;
  --color-text-heading: #4A90E2;
  --color-text-body: #3D4451;
  --color-white: #FFFFFF;
  --color-black: #000000;
  
  /* 差异化背景色方案 - 解决白底白字问题 */
  --color-bg-content: #FAFBFC;      /* 内容区域背景（微灰） */
  --color-bg-guide: #F8F9FA;        /* 指南区域背景（浅灰） */
  --color-bg-troubleshooting: #F1F3F4; /* 故障排除背景（中灰） */
  --color-bg-faq: #EBEDEF;          /* FAQ区域背景（深灰） */
  --color-bg-history: #E8EAED;      /* 历史记录背景 */
  --color-text-title: #1F2937;      /* 深色标题文字 */
  --color-text-content: #374151;    /* 深色内容文字 */
  
  /* 移动端优先的间距和尺寸 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* 触摸友好的最小尺寸 */
  --touch-target-min: 44px;
  --button-height-mobile: 48px;
  --button-padding-mobile: 12px 24px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text-body);
    background: var(--color-bg-light);
    min-height: 100vh;
    overflow-x: hidden;
    /* 移动端优化：防止iOS Safari的缩放 */
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

/* 浅色模式配色已整合到主:root中 */

/* 深色模式配色方案 */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #1A1D29;       /* 深色页面背景 */
        --color-primary: #4A90E2;          /* 保持主色不变 */
        --color-primaryText: #FFFFFF;      /* 主按钮文字 */
        --color-titleText: #FFFFFF;        /* 深色模式标题文字改为白色 */
        --color-bodyText: #D6D8E0;         /* 深色模式正文文字 */
        --color-linkText: #66A3FF;         /* 深色模式链接文字稍浅 */
        --color-success: #00C48C;          /* 保持成功色 */
        --color-danger: #FF4C4C;           /* 保持错误色 */
        --color-border: #2C2F4A;           /* 深色模式边框 */
        --color-cardBackground: #2A2E44;   /* 深色模式卡片背景 */
        
        /* 兼容性变量更新 */
        --color-bg-light: #1A1D29;
        --color-bg-card: #2A2E44;
        --color-text-heading: #FFFFFF;
        --color-text-body: #D6D8E0;
    }
}

/* 移动端优先的容器 */
.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-md); /* 16px mobile */
}

/* 平板及以上尺寸 */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg); /* 24px tablet */
    }
}

/* 桌面端 */
@media (min-width: 1024px) {
    .container {
        max-width: 1200px;
        padding: 0 var(--spacing-xl); /* 32px desktop */
    }
}

/* 移动端优先的主导航菜单 */
.main-navigation {
    background: var(--color-bg-card);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.main-navigation.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px; /* 移动端较小高度 */
    padding: 0 var(--spacing-md);
    transition: height 0.3s ease;
}

/* 平板及以上 */
@media (min-width: 768px) {
    .nav-container {
        height: 70px;
        padding: 0 var(--spacing-lg);
    }
}

/* 桌面端 */
@media (min-width: 1024px) {
    .main-navigation {
        box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08);
    }
    
    .main-navigation.scrolled {
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    }
    
    .nav-container {
        max-width: 1200px;
        margin: 0 auto;
        height: 75px;
        padding: 0 var(--spacing-xl);
    }
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-brand {
    position: relative;
}

.nav-brand a {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-brand a:hover {
    background-position: 100% 0;
    transform: scale(1.05);
}

.logo-icon {
    width: 24px;
    height: 24px;
    margin-right: 8px;
    border-radius: 4px;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
    max-width: 55%;
}

.nav-menu li {
    position: relative;
}

.nav-menu li a {
    text-decoration: none;
    color: var(--color-bodyText, #4a5568);
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    display: block;
}

.nav-menu li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-primary, #4A90E2);
    opacity: 0;
    border-radius: 30px;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-menu li a:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.nav-menu li a:hover::before {
    opacity: 1;
}

.nav-menu li a.active {
    color: var(--color-primaryText, white);
    background: var(--color-primary, #4A90E2);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
    transform: translateY(-1px);
}

.nav-menu li a.active::before {
    opacity: 0;
}

/* 导航按钮图标 */
.nav-menu li a[href="/"] {
    position: relative;
}

.nav-menu li a[href="/"]::after {
    content: "🏠";
    margin-left: 5px;
    font-size: 0.9rem;
}

.nav-menu li a[href*="windows"]::after {
    content: "🖥️";
    margin-left: 5px;
    font-size: 0.9rem;
}

.nav-menu li a[href*="phone"]::after {
    content: "📱";
    margin-left: 5px;
    font-size: 0.9rem;
}

.nav-menu li a[href*="no-sound"]::after {
    content: "🔧";
    margin-left: 5px;
    font-size: 0.9rem;
}

.nav-menu li a[href*="how-to"]::after {
    content: "❓";
    margin-left: 5px;
    font-size: 0.9rem;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-left: 20px;
}

/* 移动端汉堡菜单 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: rgba(102, 126, 234, 0.1);
}

/* 不同语言导航宽度优化 */
.nav-menu {
    min-width: fit-content;
    flex-shrink: 1;
}

/* 长语言文本优化 */
[lang="de"] .nav-menu {
    max-width: 65%;
    gap: 2px;
}

[lang="es"] .nav-menu {
    max-width: 62%;
    gap: 3px;
}

[lang="fr"] .nav-menu {
    max-width: 62%;
    gap: 3px;
}

[lang="pt"] .nav-menu {
    max-width: 62%;
    gap: 3px;
}

[lang="ru"] .nav-menu {
    max-width: 65%;
    gap: 2px;
}

/* 短语言文本优化 */
[lang="ja"] .nav-menu {
    max-width: 55%;
    gap: 5px;
}

[lang="ko"] .nav-menu {
    max-width: 55%;
    gap: 5px;
}

[lang="zh-CN"] .nav-menu,
[lang="zh-TW"] .nav-menu {
    max-width: 55%;
    gap: 4px;
}

/* 阿拉伯语RTL布局 */
[lang="ar"] .nav-menu {
    max-width: 60%;
    direction: rtl;
    gap: 3px;
}

/* 响应式导航 */
@media (max-width: 1200px) {
    .nav-menu {
        max-width: 50%;
        gap: 2px;
    }
    
    .nav-menu li a {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    /* 长语言文本在中等屏幕上的调整 */
    [lang="de"] .nav-menu,
    [lang="ru"] .nav-menu {
        max-width: 55%;
        gap: 1px;
    }
    
    [lang="de"] .nav-menu li a,
    [lang="ru"] .nav-menu li a {
        padding: 5px 8px;
        font-size: 0.75rem;
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.95) 100%);
        backdrop-filter: blur(20px);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        border-radius: 0 0 15px 15px;
        padding: 20px;
        flex-direction: column;
        gap: 10px;
        max-width: 100%;
        z-index: 1000;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu li a {
        padding: 12px 20px;
        font-size: 0.95rem;
        width: 100%;
        text-align: center;
        border-radius: 12px;
    }
    
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-container {
        position: relative;
    }
}

.mobile-menu-btn span {
    width: 24px;
    height: 3px;
    background: #4A90E2;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 面包屑导航 */
.breadcrumb-nav {
    background: rgba(255, 255, 255, 0.9);
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.breadcrumb {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.9rem;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li + li::before {
    content: '›';
    margin: 0 10px;
    color: #666;
}

.breadcrumb a {
    color: #4A90E2;
    text-decoration: none;
}

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

.breadcrumb .current {
    color: #333;
    font-weight: 500;
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
    user-select: none;
}

.dropdown-menu {
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    background: var(--color-cardBackground, rgba(255, 255, 255, 0.98)) !important;
    border: 1px solid var(--color-border, rgba(102, 126, 234, 0.2)) !important;
    border-radius: 8px !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15) !important;
    min-width: 200px !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-10px) !important;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease !important;
    z-index: 9999 !important;
    list-style: none !important;
    padding: 8px 0 !important;
    margin: 0 !important;
    backdrop-filter: blur(20px) !important;
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu li a {
    display: block !important;
    padding: 10px 16px !important;
    color: var(--color-bodyText, #4a5568) !important;
    text-decoration: none !important;
    font-size: 0.9rem !important;
    transition: all 0.2s ease !important;
}

.dropdown-menu li a:hover {
    background: var(--color-border, #f7fafc) !important;
    color: var(--color-titleText, #2d3748) !important;
}

/* 语言选择器优化 */
.language-selector {
    z-index: 1001;
    position: relative;
    flex-shrink: 0; /* 防止缩小 */
}

/* PC端语言选择器：在导航右侧，默认显示 */
.desktop-lang-selector {
    display: flex;
}

/* 移动端语言选择器：在导航左侧，默认隐藏 */
.mobile-lang-selector {
    display: none;
    margin-left: auto; /* 在nav-left中居右对齐 */
}

/* 移除图案，只保留文字 */

.language-selector select {
    background: var(--color-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
    padding: 5px 10px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.75rem;
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.2);
    letter-spacing: 0.2px;
    -webkit-appearance: none;
    /* display: table-cell;vertical-align: middle */
    -moz-appearance: none;
    appearance: none;
    min-width: 80px;
    text-align: center;
}

/* 移动端语言选择器优化 */
@media (max-width: 768px) {
    /* 隐藏PC端语言选择器 */
    .desktop-lang-selector {
        display: none;
    }
    
    /* 显示移动端语言选择器 */
    .mobile-lang-selector {
        display: flex;
    }
    
    .language-selector select {
        padding: 5px 10px;
        font-size: 0.7rem;
        min-width: 80px;
        border-radius: 15px;
        font-weight: 500;
        box-shadow: 0 2px 6px rgba(74, 144, 226, 0.2);
    }
}

.language-selector select:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--color-white);
}

.language-selector select:focus {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
    border-color: rgba(255, 255, 255, 0.7);
    color: var(--color-white);
}

/* 优化下拉选项样式 */
.language-selector select option {
    background: linear-gradient(135deg, #1f2937, #374151);
    color: #ffffff;
    padding: 14px 18px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
    transition: all 0.2s ease;
}

/* 未选择状态的选项颜色 */
.language-selector select option:not(:checked) {
    background: linear-gradient(135deg, #2d3748, #4a5568);
    color: #e2e8f0;
}

.language-selector select option:checked {
    background: #4A90E2;
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
}

.language-selector select option:hover {
    background: linear-gradient(135deg, #4c51bf, #553c9a);
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
}

/* Firefox 特定优化 */
@-moz-document url-prefix() {
    .language-selector select option {
        color: #e2e8f0 !important;
        background-color: #374151 !important;
        padding: 14px 18px !important;
        font-weight: 600 !important;
    }
    
    .language-selector select option:checked {
        background-color: #4A90E2 !important;
        color: #ffffff !important;
        font-weight: 700 !important;
    }
}

/* Webkit 特定优化 */
.language-selector select option:focus {
    background: #4A90E2;
    color: #ffffff;
}

/* 增强下拉选项对比度 */
.language-selector select option {
    background-color: #2d3748 !important;
    color: #e2e8f0 !important;
}

.language-selector select option:checked,
.language-selector select option[selected] {
    background-color: #4A90E2 !important;
    color: #ffffff !important;
    font-weight: 700 !important;
}

.language-selector select option:hover,
.language-selector select option:focus {
    background-color: #4c51bf !important;
    color: #ffffff !important;
}

/* 顶部介绍区域 */
.header-section {
    padding: 25px 0 20px;
    text-align: center;
    color: white;
    position: relative;
    /* background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.95) 100%); */
    /* background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(102, 126, 234, 0.9) 100%); */
    background: #4A90E2;
    backdrop-filter: blur(10px);
}

/* 在线麦克风测试页面特定优化 */
.main-section {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.95) 0%, rgba(241, 245, 249, 0.98) 100%);
    backdrop-filter: blur(10px);
    position: relative;
    padding: 30px 0;
}

.main-section .container {
    position: relative;
    z-index: 2;
}

/* 测试面板整体优化 */
.test-panel {
    background: var(--color-bg-card);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-border);
}

/* 测试面板文本优化 */
.test-panel h2 {
    color: var(--color-text-heading) !important;
    font-weight: 800;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.test-panel p {
    color: #475569 !important;
    font-weight: 500;
    line-height: 1.6;
}

.test-panel span {
    color: #374151 !important;
}

/* 状态显示优化 */
.mic-status {
    color: #1e293b !important;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.8);
    padding: 15px 25px;
    border-radius: 15px;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

/* 权限横幅文本优化 */
.permission-banner {
    background: rgba(255, 255, 255, 0.95) !important;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 25px;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.permission-banner h4 {
    color: #4A90E2 !important;
    font-weight: 700;
}

.permission-banner p {
    color: #475569 !important;
    font-weight: 500;
}

/* 录音控制区域文本优化 */
.recording-controls {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
}

.recording-controls span {
    color: #374151 !important;
    font-weight: 600;
}

.recording-info {
    color: #475569 !important;
}

.header-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><radialGradient id="grad" cx="50%" cy="50%" r="50%"><stop offset="0%" style="stop-color:rgba(255,255,255,0.1);stop-opacity:1" /><stop offset="100%" style="stop-color:rgba(255,255,255,0);stop-opacity:0" /></radialGradient></defs><circle cx="50" cy="50" r="30" fill="url(%23grad)" /></svg>') center/200px 200px;
    opacity: 0.3;
    pointer-events: none;
}

.header-section .container {
    position: relative;
    z-index: 2;
}

.header-section h1 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-text-heading);
    margin-bottom: 12px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    background: linear-gradient(135deg, #ffffff, #f0f9ff, #e0f2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.header-section p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    opacity: 0.95;
    font-weight: 400;
    line-height: 1.4;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.features {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.features span {
    background: rgba(255, 255, 255, 0.15);
    padding: 10px 20px;
    border-radius: 25px;
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.features span::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.features span:hover {
    transform: translateY(-8px) scale(1.05);
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.features span:hover::before {
    left: 100%;
}

.seo-keywords {
    margin-top: 10px;
    opacity: 0.8;
    font-size: 0.85rem;
}

/* 中部功能区域 */
.main-section {
    padding: 35px 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(25px);
    margin: -10px 20px 0;
    border-radius: 30px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.12), 0 10px 20px rgba(0, 0, 0, 0.08);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.main-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-radius: 30px;
    pointer-events: none;
}

.test-panel {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.test-panel h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: var(--color-titleText, #4A90E2);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

/* 麦克风状态显示已融合到audio-visualizer中 */

.mic-status {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px solid #E0E4EC;
    color: #475569;
    position: relative;
    overflow: hidden;
}

.mic-status::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.mic-status.connected {
    background: linear-gradient(135deg, #00C48C 0%, #059669 50%, #047857 100%);
    color: white;
    border-color: #00C48C;
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4), 0 0 30px rgba(16, 185, 129, 0.2);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.mic-status.active {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #b45309 100%);
    color: white;
    border-color: #f59e0b;
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4), 0 0 30px rgba(245, 158, 11, 0.2);
    animation: pulse 2s infinite;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* 移动端优先的音频可视化器 */
.audio-visualizer {
    margin: var(--spacing-xl) 0; /* 32px mobile */
    padding: var(--spacing-lg); /* 24px mobile */
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.95) 0%, rgba(241, 245, 249, 0.98) 100%);
    border-radius: 20px;
    border: 2px solid rgba(74, 144, 226, 0.15);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 40px rgba(74, 144, 226, 0.1);
    text-align: center;
}

/* 融合后的麦克风状态样式 */
.audio-visualizer .mic-status {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 700;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px solid #E0E4EC;
    color: #475569;
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.audio-visualizer .mic-status::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.audio-visualizer .mic-status.connected {
    background: linear-gradient(135deg, #00C48C 0%, #059669 50%, #047857 100%);
    color: white;
    border-color: #00C48C;
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4), 0 0 30px rgba(16, 185, 129, 0.2);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.audio-visualizer .mic-status.active {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #b45309 100%);
    color: white;
    border-color: #f59e0b;
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4), 0 0 30px rgba(245, 158, 11, 0.2);
    animation: pulse 2s infinite;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.audio-visualizer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(74, 144, 226, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

/* 移动端优先的Canvas */
#audioCanvas {
    width: 100%;
    height: 120px; /* 移动端增加高度 */
    border-radius: 15px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(74, 144, 226, 0.2);
    display: block;
    transition: all 0.3s ease;
}

#audioCanvas:hover {
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* 平板及以上 */
@media (min-width: 768px) {
    .audio-visualizer {
        margin: var(--spacing-xl) 0; /* 32px */
        padding: var(--spacing-lg); /* 24px */
        border-radius: 20px;
    }
    
    #audioCanvas {
        height: 120px;
        border-radius: 15px;
    }
}

/* 桌面端 */
@media (min-width: 1024px) {
    .audio-visualizer {
        margin: var(--spacing-2xl) 0; /* 48px */
        padding: var(--spacing-xl); /* 32px */
    }
    
    #audioCanvas {
        max-width: 600px;
        height: 140px;
        margin: 0 auto var(--spacing-lg) auto;
    }
}

.volume-meter {
    max-width: 700px;
    margin: 0 auto;
}

.volume-bar {
    width: 100%;
    height: 14px;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.3);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.volume-bar::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: var(--volume, 0%);
    background: linear-gradient(90deg, #00C48C 0%, #f59e0b 50%, #FF4C4C 90%, #FF4C4C 100%);
    border-radius: 10px;
    transition: width 0.1s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.volume-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-size: 0.9rem;
    color: #2d3748;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

/* 移动端优先的控制按钮 */
.control-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg); /* 24px */
    align-items: center;
    margin: var(--spacing-xl) 0; /* 32px */
    padding: 0 var(--spacing-md);
}

/* 移动端优先的按钮样式 */
.btn {
    width: 100%;
    max-width: 320px;
    min-height: 52px; /* 增加触摸区域 */
    padding: var(--spacing-md) var(--spacing-xl); /* 16px 32px */
    border: none;
    border-radius: 26px;
    font-size: 16px; /* 防止iOS Safari缩放 */
    font-weight: 700;
    /* 触摸友好的配置 */
    touch-action: manipulation;
    user-select: none;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 160px;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* 平板及以上：按钮横向排列 */
@media (min-width: 768px) {
    .control-buttons {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-lg); /* 24px */
        margin: var(--spacing-xl) 0; /* 32px */
    }
    
    .btn {
        width: auto;
        min-width: 160px;
        max-width: none;
    }
}

/* 桌面端：更大间距和尺寸 */
@media (min-width: 1024px) {
    .control-buttons {
        gap: var(--spacing-xl); /* 32px */
        margin: var(--spacing-2xl) 0; /* 48px */
    }
    
    .btn {
        min-height: 56px;
        padding: 14px 28px;
        font-size: 1.1rem;
        min-width: 180px;
    }
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.4), 0 4px 12px rgba(74, 144, 226, 0.3);
    border-color: rgba(74, 144, 226, 0.3);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 35px rgba(74, 144, 226, 0.5), 0 6px 18px rgba(74, 144, 226, 0.4);
    background: var(--color-primary-dark);
}

.btn-primary:active {
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s;
}

.btn-secondary {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #b45309 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4), 0 4px 12px rgba(245, 158, 11, 0.3);
    border-color: rgba(245, 158, 11, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 35px rgba(245, 158, 11, 0.5), 0 6px 18px rgba(245, 158, 11, 0.4);
    background: linear-gradient(135deg, #f97316 0%, #ea580c 50%, #c2410c 100%);
}

.btn-secondary:active {
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s;
}

.btn-danger {
    background: linear-gradient(135deg, #FF4C4C 0%, #FF4C4C 50%, #b91c1c 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4), 0 4px 12px rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 35px rgba(239, 68, 68, 0.5), 0 6px 18px rgba(239, 68, 68, 0.4);
    background: linear-gradient(135deg, #f87171 0%, #FF4C4C 50%, #FF4C4C 100%);
}

.btn-danger:active {
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s;
}

.btn-success {
    background: linear-gradient(135deg, #00C48C 0%, #059669 50%, #047857 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4), 0 4px 12px rgba(16, 185, 129, 0.3);
    border-color: rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 35px rgba(16, 185, 129, 0.5), 0 6px 18px rgba(16, 185, 129, 0.4);
    background: linear-gradient(135deg, #34d399 0%, #00C48C 50%, #059669 100%);
}

.btn-success:active {
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* 麦克风权限横幅 */
.permission-banner {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12) 0%, rgba(29, 78, 216, 0.08) 100%);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 15px;
    padding: 16px 20px;
    margin: 0 0 18px 0;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.15);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.5s ease-out;
}

/* 请求权限状态 */
.permission-banner.requesting {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12) 0%, rgba(217, 119, 6, 0.08) 100%);
    border-color: rgba(245, 158, 11, 0.25);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.15);
}

.permission-banner.requesting .permission-text h4 {
    color: #92400e;
}

.permission-banner.requesting .permission-text p {
    color: #a16207;
}

/* 成功状态 */
.permission-banner.success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(5, 150, 105, 0.08) 100%);
    border-color: rgba(16, 185, 129, 0.25);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.15);
}

.permission-banner.success .permission-text h4 {
    color: #047857;
}

.permission-banner.success .permission-text p {
    color: #059669;
}

/* 错误状态 */
.permission-banner.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12) 0%, rgba(220, 38, 38, 0.08) 100%);
    border-color: rgba(239, 68, 68, 0.25);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.15);
}

.permission-banner.error .permission-text h4 {
    color: #991b1b;
}

.permission-banner.error .permission-text p {
    color: #b91c1c;
}

.permission-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.8s;
}

.permission-banner:hover::before {
    left: 100%;
}

.permission-banner-content {
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
    z-index: 2;
}

.permission-icon {
    font-size: 2.2rem;
    animation: pulse 2s infinite;
    filter: drop-shadow(0 2px 6px rgba(59, 130, 246, 0.3));
    flex-shrink: 0;
    opacity: 0.9;
}

.permission-text {
    flex: 1;
}

.permission-text h4 {
    color: #1e40af;
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 4px 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    line-height: 1.3;
}

.permission-text p {
    color: #3730a3;
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.4;
    opacity: 0.85;
}

/* 按钮样式已移除 */

/* 提示信息 */
.alerts {
    margin: 25px 0;
}

.alert {
    padding: 18px 24px;
    border-radius: 15px;
    margin: 15px 0;
    font-weight: 600;
    animation: slideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s;
}

.alert:hover::before {
    left: 100%;
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(5, 150, 105, 0.1) 100%);
    color: #065f46;
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.2);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(217, 119, 6, 0.1) 100%);
    color: #92400e;
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.2);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15) 0%, rgba(220, 38, 38, 0.1) 100%);
    color: #991b1b;
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.2);
}

.alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(29, 78, 216, 0.1) 100%);
    color: #1e40af;
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
    position: relative;
}

.alert-info::after {
    content: '🎤';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    opacity: 0.7;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-15px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 录音控制 */
.recording-controls {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    margin: 30px 0;
}

.recording-info {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #333;
    font-weight: 600;
}

#audioPlayback {
    width: 100%;
    max-width: 400px;
    margin: 20px 0;
    border-radius: 10px;
}

/* 底部结果区域 */
.footer-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.08) 100%);
    backdrop-filter: blur(25px);
    margin: 50px 20px 0;
    border-radius: 30px 30px 0 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
}

.footer-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at top, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    border-radius: 30px 30px 0 0;
    pointer-events: none;
}

.test-results {
    margin-bottom: 50px;
}

.test-results h3 {
    color: var(--color-text-heading);
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.result-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-text-body);
    text-align: center;
}

.result-item span:first-child {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
}

.status-unknown { color: #ffc107; }
.status-good { color: #4caf50; }
.status-warning { color: #ff9800; }
.status-error { color: #f44336; }

/* 录音历史 */
.recording-history {
    margin-bottom: 50px;
}

.recording-history h3 {
    color: var(--color-text-title, #1f2937);
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

.history-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.history-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-text-body, #334155);
}

/* FAQ部分 */
.faq-section {
    margin-bottom: 50px;
}

.faq-section h3 {
    color: var(--color-text-title, #1f2937);
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

.faq-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: rgb(7, 7, 7);
}

.faq-item h4 {
    margin-bottom: 10px;
    color: #000000;
    font-size: 1.1rem;
}

.faq-item p {
    line-height: 1.6;
    opacity: 0.9;
    color: rgb(7, 7, 7);
}

/* SEO内容 */
.seo-content {
    background: rgba(255, 255, 255, 0.2);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-text-body);
    text-align: center;
    margin-bottom: 40px;
}

.seo-content h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.seo-content p {
    line-height: 1.6;
    opacity: 0.9;
}

/* 差异化背景色修复方案 - 解决白底白字问题 */

/* 指南区域 */
.phone-guide, .windows-guide, .guide-section {
    background: var(--color-bg-guide);
    padding: 24px;
    border-radius: 12px;
    margin: 20px 0;
}

.guide-item {
    background: var(--color-bg-card);
    padding: 20px;
    border-radius: 8px;
    margin: 16px 0;
    border: 1px solid var(--color-border);
}

/* 故障排除区域 */
.phone-troubleshooting, .windows-troubleshooting, .troubleshooting-section {
    background: var(--color-bg-troubleshooting);
    padding: 24px;
    border-radius: 12px;
    margin: 20px 0;
}

.problem-item {
    background: var(--color-bg-card);
    padding: 20px;
    border-radius: 8px;
    margin: 16px 0;
    border: 1px solid var(--color-border);
}

/* FAQ区域 */
.faq-section {
    background: var(--color-bg-faq);
    padding: 24px;
    border-radius: 12px;
    margin: 20px 0;
}

.faq-item {
    background: var(--color-bg-card);
    padding: 20px;
    border-radius: 8px;
    margin: 16px 0;
    border: 1px solid var(--color-border);
}

/* 录音历史区域 */
.recording-history {
    background: var(--color-bg-history);
    padding: 24px;
    border-radius: 12px;
    margin: 20px 0;
}

.history-item {
    background: var(--color-bg-card);
    padding: 16px;
    border-radius: 8px;
    margin: 12px 0;
    border: 1px solid var(--color-border);
}

/* 统一文字颜色 */
.phone-guide h2, .windows-guide h2, .guide-section h2,
.phone-troubleshooting h2, .windows-troubleshooting h2, .troubleshooting-section h2,
.faq-section h2, .recording-history h2 {
    color: var(--color-text-title);
}

.guide-item h3, .problem-item h3, .faq-item h3, .history-item h3 {
    color: var(--color-text-title);
}

.guide-item p, .problem-item p, .faq-item p, .history-item p,
.troubleshooting-list li, .problem-item ul, .problem-item li,
.faq-item ul, .faq-item li {
    color: var(--color-text-content);
}

/* 相关链接区块 */
.related-links {
    background: var(--color-bg-content);
    padding: 20px;
    border-radius: 8px;
    margin: 16px 0;
}

.related-links h3, .link-category h4 {
    color: var(--color-text-title);
}

.related-links a {
    color: var(--color-primary);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .header-section {
        padding: 20px 0 15px;
    }
    
    .header-section h1 {
        font-size: 2rem;
    }
    
    .features {
        gap: 15px;
    }
    
    .main-section {
        margin: -8px 15px 0;
        padding: 30px 0;
    }
    
    .test-panel {
        max-width: 750px;
    }
    
    .test-panel h2 {
        font-size: 1.6rem;
        margin-bottom: 20px;
    }
    
    #audioCanvas {
        max-width: 500px;
        height: 110px;
        margin: 0 auto var(--spacing-lg) auto;
    }
    
    .audio-visualizer {
        margin: 20px 0;
        padding: 18px;
    }
    
    .control-buttons {
        margin: 20px 0;
    }
}

@media (max-width: 768px) {
    .header-section {
        padding: 15px 0 12px;
    }
    
    .header-section h1 {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .header-section p {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .features {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 8px;
        margin-bottom: 12px;
        width: 100%;
        max-width: 100%;
    }
    
    .features span {
        padding: 10px 8px;
        font-size: 0.85rem;
        text-align: center;
        min-height: 45px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 15px;
    }
    
    .seo-keywords {
        margin-top: 8px;
        font-size: 0.8rem;
    }
    
    .main-section {
        margin: -5px 15px 0;
        padding: 25px 0;
        border-radius: 25px;
    }
    
    .test-panel {
        max-width: 100%;
    }
    
    .test-panel h2 {
        font-size: 1.5rem;
        margin-bottom: 18px;
    }
    

    
    .mic-status {
        padding: 12px 24px;
        font-size: 1rem;
    }
    
    .audio-visualizer {
        margin: 18px 0;
        padding: 18px;
    }
    
    #audioCanvas {
        height: 100px;
        margin: 0 auto var(--spacing-lg) auto;
    }
    
    .control-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        margin: 18px 0;
    }
    
    .permission-banner {
        padding: 15px;
        margin: 0 0 15px 0;
    }
    
    .permission-banner-content {
        flex-direction: row;
        gap: 12px;
        text-align: left;
    }
    
    .permission-icon {
        font-size: 2rem;
    }
    
    .permission-text h4 {
        font-size: 1rem;
        margin-bottom: 3px;
    }
    
    .permission-text p {
        font-size: 0.85rem;
        line-height: 1.3;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
        padding: 12px 20px;
        font-size: 1rem;
    }
    
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 15px;
    }
    
    .history-list {
        grid-template-columns: 1fr;
    }
    
    .footer-section {
        margin: 20px 15px 0;
    }
    
    .test-results h3,
    .recording-history h3,
    .faq-section h3 {
        font-size: 1.6rem;
        margin-bottom: 20px;
    }
    
    .language-selector {
        top: 12px;
        right: 12px;
    }
    
    .language-selector select {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .header-section {
        padding: 12px 0 10px;
    }
    
    .header-section h1 {
        font-size: 1.5rem;
        margin-bottom: 8px;
        line-height: 1.2;
    }
    
    .header-section p {
        font-size: 0.9rem;
        line-height: 1.3;
        margin-bottom: 12px;
    }
    
    .features {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 6px;
        margin-bottom: 10px;
        width: 100%;
    }
    
    .features span {
        padding: 8px 6px;
        font-size: 0.75rem;
        text-align: center;
        min-height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        line-height: 1.2;
    }
    
    .seo-keywords {
        margin-top: 6px;
        font-size: 0.75rem;
    }
    
    .main-section {
        padding: 20px 0;
        margin: -3px 10px 0;
        border-radius: 20px;
    }
    
    .test-panel h2 {
        font-size: 1.3rem;
        margin-bottom: 15px;
    }
    

    
    .mic-status {
        padding: 10px 20px;
        font-size: 0.95rem;
    }
    
    .audio-visualizer {
        padding: 15px;
        margin: 15px 0;
    }
    
    #audioCanvas {
        height: 80px;
    }
    
    .control-buttons {
        margin: 15px 0;
        gap: 12px;
    }
    
    .permission-banner {
        padding: 12px 15px;
        margin: 0 0 12px 0;
    }
    
    .permission-banner-content {
        flex-direction: row;
        gap: 10px;
        text-align: left;
    }
    
    .permission-icon {
        font-size: 1.6rem;
    }
    
    .permission-text h4 {
        font-size: 0.95rem;
        margin-bottom: 2px;
    }
    
    .permission-text p {
        font-size: 0.8rem;
        line-height: 1.2;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.95rem;
        max-width: 220px;
        min-width: 120px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .test-results h3,
    .recording-history h3,
    .faq-section h3 {
        font-size: 1.3rem;
    }
    
    .language-selector {
        top: 1px;
        right: 8px;
    }
    
    .language-selector select {
        padding: 4px 8px;
        font-size: 0.85rem;
    }
}

/* 阿拉伯语RTL支持 */
[lang="ar"] {
    direction: rtl;
}

[lang="ar"] .language-selector {
    /* RTL支持：语言选择器现在在nav-left中，无需特殊定位 */
    position: relative;
}

@media (max-width: 768px) {
    [lang="ar"] .language-selector {
        /* RTL支持：移动端语言选择器在nav-left中，无需特殊定位 */
        position: relative;
    }
}

@media (max-width: 480px) {
    [lang="ar"] .language-selector {
        /* RTL支持：小屏幕语言选择器在nav-left中，无需特殊定位 */
        position: relative;
    }
}

/* 新功能推荐区域 */
.new-features-section {
    background: var(--color-bg-card);
    padding: 40px;
    margin: 40px 0;
    border-radius: 15px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.new-features-section h2 {
    text-align: center;
    color: var(--color-text-heading);
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.new-features-section p {
    text-align: center;
    color: var(--color-text-body);
    font-size: 1.1rem;
    margin-bottom: 30px;
    line-height: 1.6;
}

.new-features-section .features-grid {
    gap: 25px;
    margin-top: 30px;
}

/* 新布局样式 - 页面标题和帮助页面header */

/* 功能页面标题 */
.page-title {
    text-align: center;
    padding: var(--spacing-lg) 0 var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.05) 0%, rgba(74, 144, 226, 0.02) 100%);
    border-radius: 20px;
    position: relative;
}

.page-title::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-success) 100%);
    border-radius: 2px;
}

.page-title h1 {
    font-size: clamp(2rem, 4.5vw, 2.8rem);
    color: var(--color-text-heading);
    margin-bottom: var(--spacing-sm);
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--color-text-heading) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-title p {
    font-size: clamp(1.1rem, 2.8vw, 1.3rem);
    color: var(--color-text-body);
    margin-bottom: 0;
    line-height: 1.5;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

/* 帮助页面精简header */
.help-header {
    background: var(--color-bg-card);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.help-header .container {
    text-align: center;
}

.help-header h1 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    color: var(--color-text-heading);
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
    line-height: 1.3;
}

.help-header p {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    color: var(--color-text-body);
    margin-bottom: 0;
    line-height: 1.5;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 调整主内容区域上边距 */
.main-section {
    padding-top: var(--spacing-xs);
}

/* 底部内容区域优化 */
.footer-section {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.8) 0%, rgba(241, 245, 249, 0.9) 100%);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.footer-section .container > div {
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: 20px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.footer-section .container > div:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(74, 144, 226, 0.1);
}

.footer-section .container > div:last-child {
    margin-bottom: 0;
}

.footer-section h2 {
    color: var(--color-text-heading);
    font-size: clamp(1.5rem, 3vw, 1.8rem);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-success) 100%);
    border-radius: 2px;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .page-title {
        padding: var(--spacing-md) 0 var(--spacing-lg) 0;
        margin: var(--spacing-md);
        border-radius: 15px;
    }
    
    .page-title::before {
        width: 40px;
        height: 3px;
    }
    
    .help-header {
        padding: var(--spacing-md) 0;
        margin-bottom: var(--spacing-md);
    }
    
    .page-title h1,
    .help-header h1 {
        line-height: 1.2;
    }
    
    .footer-section {
        padding: var(--spacing-xl) 0;
        margin-top: var(--spacing-xl);
    }
    
    .footer-section .container > div {
        margin-bottom: var(--spacing-xl);
        padding: var(--spacing-lg);
        border-radius: 15px;
    }
}

@media (max-width: 480px) {
    .page-title {
        padding: var(--spacing-sm) 0 var(--spacing-md) 0;
        margin: var(--spacing-sm);
        border-radius: 12px;
    }
    
    .help-header {
        padding: var(--spacing-sm) 0;
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-section .container > div {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
}

.new-features-section .feature-card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: 20px;
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.new-features-section .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.02) 0%, transparent 50%);
    pointer-events: none;
}

.new-features-section .feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 15px 40px rgba(74, 144, 226, 0.15);
    transform: translateY(-5px);
}

.new-features-section .feature-icon {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-lg);
    display: block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-success) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.new-features-section .feature-card h3 {
    margin-bottom: var(--spacing-md);
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
}

.new-features-section .feature-card h3 a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.new-features-section .feature-card h3 a:hover {
    color: var(--color-primary-dark);
    text-shadow: 0 2px 8px rgba(74, 144, 226, 0.3);
}

.new-features-section .feature-card p {
    color: var(--color-text-body);
    font-size: clamp(0.9rem, 2vw, 1rem);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.new-features-section .feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: auto;
}

.new-features-section .feature-tags span {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: clamp(0.8rem, 1.8vw, 0.9rem);
    font-weight: 600;
    border: 1px solid rgba(74, 144, 226, 0.2);
    transition: all 0.3s ease;
}

.new-features-section .feature-tags span:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.05);
}

/* 使用指南区块 */
.usage-guide {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.08) 100%);
    padding: 35px;
    border-radius: 25px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    color: var(--color-text-body);
    margin-bottom: 30px;
}

.usage-guide h3 {
    color: var(--color-text-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.guide-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.guide-section {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.guide-section:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

.guide-section h4 {
    color: var(--color-text-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.guide-section p {
    color: var(--color-text-body);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 15px;
    font-weight: 400;
}

.guide-tips {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tip {
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 6px 12px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 20px;
    border: 1px solid rgba(102, 126, 234, 0.3);
    display: inline-block;
}

.link-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.link-category li {
    margin-bottom: 8px;
}

.link-category a {
    color: #000000;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.link-category a:hover {
    color: #333333;
    text-decoration: underline;
}

/* 相关页面链接样式 - 所有文字黑色 */
.related-links h3 {
    color: #000000;
    font-weight: 700;
    margin-bottom: 20px;
}

.link-category h4 {
    color: #000000;
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

/* 确保相关页面块下的所有文字都是黑色 */
.related-links,
.related-links *,
.link-category,
.link-category * {
    color: #000000 !important;
}

.link-category a:hover {
    color: #333333 !important;
}

/* 页脚导航优化 */
.footer-navigation {
    background: linear-gradient(135deg, rgba(26, 32, 44, 0.95) 0%, rgba(45, 55, 72, 0.98) 100%);
    backdrop-filter: blur(20px);
    padding: 50px 0 30px;
    margin-top: 60px;
    border-top: 3px solid rgba(102, 126, 234, 0.6);
    position: relative;
}

.footer-navigation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    pointer-events: none;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.footer-section {
    padding: 25px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.footer-section:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
    border-color: rgba(74, 144, 226, 0.3);
}

.footer-section h4 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #4A90E2;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li {
    margin-bottom: 12px;
    padding-left: 15px;
    position: relative;
}

.footer-section li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: rgba(102, 126, 234, 0.7);
    font-weight: bold;
    transition: color 0.3s ease;
}

.footer-section li:hover::before {
    color: rgba(102, 126, 234, 1);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    font-weight: 500;
    display: inline-block;
}

.footer-section a:hover {
    color: #ffffff;
    text-decoration: none;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    padding: 4px 8px;
    border-radius: 6px;
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(102, 126, 234, 0.3);
    padding-top: 25px;
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
}

/* 移动端导航优化 */
@media (max-width: 768px) {
    .nav-container {
        height: 65px;
        padding: 0 15px;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .nav-menu {
        position: fixed;
        top: 65px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.95) 100%);
        backdrop-filter: blur(20px);
        flex-direction: column;
        gap: 5px;
        padding: 20px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        max-height: calc(100vh - 65px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu li a {
        width: 100%;
        text-align: center;
        padding: 15px 20px;
        margin: 0;
        border-radius: 15px;
        font-size: 1rem;
    }
    
    .mobile-menu-btn {
        display: flex;
        order: -1;
        position: relative;
        z-index: 1002; /* 确保在语言选择器之上 */
    }
    
    .nav-right {
        /* gap: 10px; */
        display: flex;
        align-items: center;
        justify-content: flex-end;
        position: relative;
        min-width: 20px; /* 为语言选择器预留空间 */
    }
    
    .nav-brand a {
        font-size: 1.4rem;
    }
    
    .logo-icon {
        width: 20px;
        height: 20px;
        margin-right: 6px;
    }
}
    
    .breadcrumb-nav {
        padding: 8px 0;
    }
    
    .breadcrumb {
        font-size: 0.8rem;
        flex-wrap: wrap;
    }
    
    .usage-guide {
        padding: 25px 20px;
    }
    
    .guide-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .guide-section {
        padding: 20px;
    }
    
    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 25px;
    }
    
    .footer-section {
        padding: 20px;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 12px 15px;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 60px;
    }
    
    .nav-menu {
        gap: 8px;
        margin: 12px 0;
    }
    
    .nav-menu li a {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    .nav-right {
        gap: 8px;
        min-width: 120px; /* 小屏幕稍微减少空间 */
    }
    
    .new-features-section {
        padding: 25px 15px;
        margin: 25px 0;
    }
    
    .new-features-section h2 {
        font-size: 1.6rem;
    }
    
    .new-features-section .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .new-features-section .feature-card {
        padding: 20px;
    }
    
    .new-features-section .feature-icon {
        font-size: 2.5rem;
    }
    
    .usage-guide {
        padding: 20px 15px;
    }
    
    .usage-guide h3 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .guide-section {
        padding: 18px;
    }
    
    .guide-section h4 {
        font-size: 1.1rem;
    }
    
    .footer-navigation {
        padding: 35px 0 20px;
        margin-top: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 25px;
    }
    
    .footer-section {
        padding: 20px 15px;
        margin-bottom: 10px;
    }
    
    .footer-section h4 {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .footer-section a {
        font-size: 0.9rem;
    }
    
    .footer-bottom {
        padding: 15px;
        font-size: 0.85rem;
    }
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
    user-select: none;
}

/* 下拉菜单基础样式 */
.dropdown {
    position: relative !important;
}

.dropdown-toggle {
    cursor: pointer !important;
    user-select: none !important;
}

/* 桌面端下拉菜单 */
@media (min-width: 1025px) {
    .dropdown-menu {
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        background: rgba(255, 255, 255, 0.98) !important;
        border: 1px solid rgba(102, 126, 234, 0.2) !important;
        border-radius: 8px !important;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15) !important;
        min-width: 200px !important;
        opacity: 0 !important;
        visibility: hidden !important;
        transform: translateY(-10px) !important;
        transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease !important;
        z-index: 9999 !important;
        list-style: none !important;
        padding: 8px 0 !important;
        margin: 0 !important;
        backdrop-filter: blur(20px) !important;
        display: block !important;
    }

    /* 桌面端激活状态 */
    .dropdown:hover .dropdown-menu,
    .dropdown.active .dropdown-menu {
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateY(0) !important;
    }
    
    /* 下拉菜单中的链接样式 - 覆盖导航菜单样式 */
    .nav-menu .dropdown-menu li a {
        display: block !important;
        padding: 10px 16px !important;
        color: #4a5568 !important;
        text-decoration: none !important;
        font-size: 0.9rem !important;
        font-weight: 500 !important;
        border-radius: 0 !important;
        transform: none !important;
        transition: background-color 0.2s ease !important;
        white-space: normal !important;
        overflow: visible !important;
        box-shadow: none !important;
    }
    
    .nav-menu .dropdown-menu li a::before {
        display: none !important;
    }
    
    .nav-menu .dropdown-menu li a:hover {
        background: #f7fafc !important;
        color: #2d3748 !important;
        transform: none !important;
        box-shadow: none !important;
    }
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu li a {
    display: block;
    padding: 10px 16px;
    color: #4a5568;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border-radius: 0;
}

.dropdown-menu li a:hover {
    background: #f7fafc;
    color: #2d3748;
    transform: none;
}

.dropdown-menu li a.active {
    background: #4A90E2;
    color: white;
}

/* 移动端下拉菜单 */
@media (max-width: 1024px) {
    .dropdown-menu {
        position: static !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        box-shadow: none !important;
        border: none !important;
        background: rgba(255, 255, 255, 0.95) !important;
        margin-left: 20px;
        border-left: 3px solid #4A90E2;
        padding-left: 15px;
        display: none; /* 默认隐藏 */
    }
    
    .dropdown.active .dropdown-menu {
        display: block !important; /* 激活时显示 */
    }
    
    .dropdown-menu li a {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
}

/* 专题页面样式 */
.nav-menu .active {
    background: #4A90E2;
    color: white !important;
    transform: translateY(-1px);
}

/* Windows 专题页面 */
.windows-content,
.phone-content,
.troubleshooting-content {
    margin-top: 40px;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.guide-item {
    background: var(--color-bg-card);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.guide-item h3 {
    color: var(--color-text-title);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.guide-item p {
    color: var(--color-text-content);
    line-height: 1.6;
}

.windows-troubleshooting,
.phone-troubleshooting {
    margin-top: 40px;
}

.troubleshooting-list {
    display: grid;
    gap: 25px;
}

.problem-item {
    background: var(--color-bg-card);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.problem-item h3 {
    color: var(--color-text-title);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.problem-item ul {
    margin: 0;
    padding-left: 20px;
}

.problem-item li {
    color: var(--color-text-content);
    margin-bottom: 8px;
    line-height: 1.5;
}

/* 手机品牌支持 */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.brand-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    text-align: center;
}

.brand-item h4 {
    color: #fff;
    margin-bottom: 10px;
    font-size: 1rem;
}

.brand-item p {
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.9;
}

/* 解决方案卡片 */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.solution-card {
    background: var(--color-bg-card);
    border-radius: 15px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    color: var(--color-text-content);
}

.solution-header {
    padding: 20px;
    background: var(--color-bg-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.solution-header h3 {
    margin: 0;
    color: var(--color-text-title);
    font-size: 1.1rem;
}

.difficulty {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.difficulty.easy {
    background: rgba(76, 175, 80, 0.8);
    color: white;
}

.difficulty.medium {
    background: rgba(255, 152, 0, 0.8);
    color: white;
}

.difficulty.hard {
    background: rgba(244, 67, 54, 0.8);
    color: white;
}

.solution-content {
    padding: 20px;
}

.solution-content h4 {
    color: var(--color-text-title);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.solution-content ul,
.solution-content ol {
    margin: 0 0 15px 0;
    padding-left: 20px;
}

.solution-content li {
    margin-bottom: 8px;
    line-height: 1.5;
    color: var(--color-text-content);
    font-size: 0.9rem;
}

/* 平台选项卡 */
.platform-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 30px;
    background: var(--color-bg-light);
    border-radius: 10px;
    padding: 4px;
    border: 1px solid var(--color-border);
}

.platform-tab {
    flex: 1;
    padding: 15px 20px;
    text-align: center;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    color: var(--color-text-content);
}

.platform-tab:hover {
    background: var(--color-bg-card);
    color: var(--color-text-title);
}

.platform-tab.active {
    background: #4A90E2;
    color: white;
    transform: translateY(-2px);
}

.platform-tab h3 {
    margin: 0;
    font-size: 1rem;
}

.platform-content {
    display: none;
    background: var(--color-bg-card);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    color: var(--color-text-content);
}

.platform-content.active {
    display: block;
}

.platform-content h4 {
    color: var(--color-text-title);
    margin-bottom: 25px;
    font-size: 1.2rem;
}

/* 步骤列表 */
.step-list {
    display: grid;
    gap: 20px;
}

.step-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: #4A90E2;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.step-content h5 {
    color: var(--color-text-title);
    margin-bottom: 8px;
    font-size: 1rem;
}

.step-content p {
    margin: 0;
    line-height: 1.5;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* 高级故障排除 */
.advanced-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.advanced-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-text-body);
}

.advanced-item h4 {
    color: var(--color-text-heading);
    margin-bottom: 15px;
    font-size: 1rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 8px;
}

.advanced-item ul {
    margin: 0;
    padding-left: 20px;
}

.advanced-item li {
    margin-bottom: 8px;
    line-height: 1.5;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Sitemap 页面样式 */
.sitemap-content {
    margin-top: 20px;
}

.sitemap-section {
    background: rgba(255, 255, 255, 0.2);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    margin-bottom: 30px;
}

.sitemap-section h2 {
    color: #fff;
    margin-bottom: 25px;
    font-size: 1.4rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 10px;
}

.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.sitemap-category h3 {
    color: #fff;
    margin-bottom: 15px;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 8px;
}

.sitemap-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sitemap-category li {
    margin-bottom: 8px;
}

.sitemap-category a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
    display: block;
    padding: 5px 0;
}

.sitemap-category a:hover {
    color: #fff;
    text-decoration: underline;
    transform: translateX(5px);
}

/* 关键词云 */
.keywords-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.keyword-tag {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    padding: 8px 15px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.keyword-tag:hover {
    background: #4A90E2;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 更新信息 */
.update-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.update-info p {
    margin-bottom: 10px;
    line-height: 1.6;
    opacity: 0.9;
}

.update-info strong {
    color: #fff;
}

.update-info a {
    color: #fff;
    text-decoration: underline;
}

.update-info a:hover {
    text-decoration: none;
}

/* 在线测试页面样式 */
.online-content {
    margin-top: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.2);
    padding: 30px 25px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #1a1a1a;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.feature-card h3 {
    color: #1a1a1a;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.feature-card p {
    line-height: 1.6;
    opacity: 0.9;
    font-size: 0.95rem;
}

/* 浏览器兼容性 */
.browsers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.browser-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #1a1a1a;
}

.browser-item h4 {
    color: #1a1a1a;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.browser-item p {
    margin-bottom: 10px;
    line-height: 1.5;
    opacity: 0.9;
    font-size: 0.9rem;
}

.browser-item strong {
    color: #fff;
}

/* 优势列表 */
.advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #1a1a1a;
}

.advantage-item h4 {
    color: #1a1a1a;
    margin-bottom: 15px;
    font-size: 1.1rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 8px;
}

.advantage-item ul {
    margin: 0;
    padding-left: 20px;
}

.advantage-item li {
    margin-bottom: 8px;
    line-height: 1.5;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* 使用指南步骤 */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.step-card {
    background: rgba(255, 255, 255, 0.2);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #1a1a1a;
    position: relative;
    transition: transform 0.3s ease;
}

.step-card:hover {
    transform: translateY(-3px);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 25px;
    width: 40px;
    height: 40px;
    background: #4A90E2;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.step-card h4 {
    color: #1a1a1a;
    margin: 10px 0 15px 0;
    font-size: 1.1rem;
}

.step-card p {
    line-height: 1.6;
    opacity: 0.9;
    font-size: 0.9rem;
    margin: 0;
}

/* 国际化按钮移动端优化 */
@media (max-width: 768px) {
    .language-selector {
        /* 移除绝对定位，现在作为nav-left的flex子元素 */
        position: relative;
        z-index: 1001;
    }
    
    .language-selector select {
        /* padding: 9px 15px; */
        font-size: 0.85rem;
        /* min-width: 110px; */
        border-radius: 28px;
        box-shadow: 0 5px 18px rgba(102, 126, 234, 0.35);
        /* text-align: center;
        text-align-last: center; */
        /* display: table-cell;vertical-align: middle; */
    }
    
    .language-selector select:hover,
    .language-selector select:focus {
        transform: translateY(-2px);
        box-shadow: 0 7px 22px rgba(102, 126, 234, 0.5);
    }
    
    /* 移动端下拉菜单选项缩小 */
    .language-selector select option {
        padding: 8px 12px !important;
        font-size: 0.8rem !important;
        font-weight: 500 !important;
    }
}

@media (max-width: 480px) {
    .language-selector {
        /* 移除绝对定位，现在作为nav-left的flex子元素 */
        position: relative;
        z-index: 1001;
    }
    
    .language-selector select {
        padding: 8px 12px;
        font-size: 0.8rem;
        min-width: 100px;
        border-radius: 25px;
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        letter-spacing: 0.3px;
        text-align: center;
        text-align-last: center;
    }
    
    .language-selector select:hover,
    .language-selector select:focus {
        transform: translateY(-1px);
        box-shadow: 0 6px 20px rgba(102, 126, 234, 0.45);
    }
    
    /* 小屏幕下拉菜单选项进一步缩小 */
    .language-selector select option {
        padding: 6px 10px !important;
        font-size: 0.75rem !important;
        font-weight: 500 !important;
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .guide-grid,
    .solution-grid,
    .sitemap-grid,
    .features-grid,
    .browsers-grid,
    .advantages-list,
    .steps-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card,
    .browser-item,
    .advantage-item,
    .step-card {
        padding: 20px;
    }
    
    .feature-icon {
        font-size: 2.5rem;
        margin-bottom: 12px;
    }
    
    .sitemap-section {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    .keywords-cloud {
        gap: 8px;
    }
    
    .keyword-tag {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .platform-tabs {
        flex-direction: column;
    }
    
    .platform-tab {
        text-align: left;
    }
    
    .step-item {
        flex-direction: column;
        gap: 15px;
    }
    
    .step-number {
        align-self: flex-start;
    }
    
    .advanced-grid,
    .brands-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .windows-content,
    .phone-content,
    .troubleshooting-content {
        margin-top: 25px;
    }
    
    .guide-item,
    .problem-item,
    .solution-card,
    .platform-content,
    .advanced-item {
        padding: 20px;
    }
    
    .solution-header {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .platform-content {
        padding: 20px;
    }
}

/* 打印样式 */
@media print {
    .language-selector,
    .control-buttons,
    .audio-visualizer,
    .recording-controls,
    .main-navigation,
    .breadcrumb-nav,
    .footer-navigation {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .main-section,
    .footer-section {
        background: white;
        box-shadow: none;
    }
}

/* Safari 和 iOS 特定优化 */
@supports (-webkit-appearance: none) {
    /* Safari 音频播放器优化 */
    audio::-webkit-media-controls-panel {
        background-color: #f8fafc;
        border-radius: 8px;
    }
    
    audio::-webkit-media-controls-play-button {
        background-color: #4A90E2;
        border-radius: 50%;
    }
    
    audio::-webkit-media-controls-timeline {
        background-color: #e2e8f0;
        border-radius: 4px;
    }
    
    audio::-webkit-media-controls-current-time-display,
    audio::-webkit-media-controls-time-remaining-display {
        color: #374151;
        font-size: 12px;
    }
}

/* Safari 录音兼容性提示 */
.safari-audio-notice {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border: 1px solid #f59e0b;
    border-radius: 8px;
    padding: 12px;
    margin: 10px 0;
    font-size: 13px;
    color: #92400e;
    display: flex;
    align-items: center;
    gap: 8px;
}

.safari-audio-notice::before {
    content: "⚠️";
    font-size: 16px;
}

/* 录音历史项目优化 */
.history-item {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    padding: 16px;
    margin: 12px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.history-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border-color: rgba(74, 144, 226, 0.2);
}

.history-item audio {
    width: 100%;
    margin: 8px 0;
    border-radius: 8px;
    background: #f8fafc;
}

/* Safari 兼容性按钮 */
.btn-compatibility {
    background: linear-gradient(135deg, #00C48C, #059669);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}



.btn-compatibility:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* iOS 特定优化 */
@media screen and (-webkit-min-device-pixel-ratio: 2) {
    /* 高分辨率设备优化 */
    .audio-visualizer canvas {
        image-rendering: -webkit-optimize-contrast;
    }
    
    /* 触摸友好的按钮大小 */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Safari 音频格式提示 */
.audio-format-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    padding: 10px;
    margin: 8px 0;
    font-size: 12px;
    color: #1e40af;
    text-align: center;
}

/* 移动端 Safari 优化 */
@media (max-width: 768px) {
    .history-item {
        padding: 12px;
        margin: 8px 0;
    }
    
    .history-item audio {
        height: 40px;
    }
    
    .btn-compatibility {
        font-size: 10px;
        padding: 4px 8px;
    }
}

/* WebKit 滚动条优化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(241, 245, 249, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #4A90E2;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8, #6b46c1);
}

/* 页脚样式 - 统一.footer和.footer-navigation */
.footer,
.footer-navigation {
    background: linear-gradient(135deg, rgba(26, 29, 41, 0.95) 0%, rgba(42, 46, 68, 0.9) 100%);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    padding: 40px 0 20px;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
}

.footer::before,
.footer-navigation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5), transparent);
}

/* 页脚语言选择器样式 */
.footer-language-selector {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-language-selector span {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-right: 10px;
}

.lang-link {
    display: inline-block;
    padding: 6px 12px;
    margin: 0 5px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 13px;
    transition: all 0.3s ease;
}

.lang-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(74, 144, 226, 0.5);
    transform: translateY(-1px);
}

.lang-link.active {
    background: linear-gradient(135deg, #4A90E2, #5a67d8);
    color: #fff;
    border-color: #4A90E2;
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.3);
}

/* 移动端语言选择器优化 */
@media (max-width: 768px) {
    .footer-language-selector {
        margin-top: 10px;
        padding-top: 10px;
    }
    
    .footer-language-selector span {
        display: block;
        margin-bottom: 8px;
        margin-right: 0;
    }
    
    .lang-link {
        margin: 3px;
        padding: 8px 12px;
        font-size: 12px;
    }
}