/* ============================================
   Ledger 官网 CSS 样式表
   响应式设计 - 适配移动端和PC端
   ============================================ */

/* ============================================
   1. CSS 变量定义
   ============================================ */
:root {
    /* 主色调 */
    --color-primary: #7c3aed;
    --color-primary-light: #a78bfa;
    --color-primary-dark: #5b21b6;
    
    /* 绿色强调色 */
    --color-accent-green: #10b981;
    --color-accent-green-light: #34d399;
    
    /* 中性色 */
    --color-black: #000000;
    --color-dark: #1a1a1a;
    --color-gray-900: #111827;
    --color-gray-800: #1f2937;
    --color-gray-700: #374151;
    --color-gray-600: #4b5563;
    --color-gray-500: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-300: #d1d5db;
    --color-gray-200: #e5e7eb;
    --color-gray-100: #f3f4f6;
    --color-gray-50: #f9fafb;
    --color-white: #ffffff;
    
    /* 背景色 */
    --bg-light: #f5f5f5;
    --bg-dark: #1a1a1a;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-family-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    
    /* 字体大小 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* 最大宽度 */
    --max-width: 1400px;
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;
    --max-width-xl: 1280px;
    
    /* Header 高度 */
    --header-height: 80px;
    --header-height-mobile: 60px;
}

/* ============================================
   2. 重置和基础样式
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    min-height: 100vh;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

address {
    font-style: normal;
}

/* 无障碍隐藏 */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   3. Header 导航栏
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-white);
    height: var(--header-height);
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom-color: var(--color-gray-200);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: 0.05em;
}

.logo-bracket {
    font-weight: 300;
}

.logo-text {
    margin: 0 2px;
}

/* 主导航 */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-gray-700);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

/* 右侧功能区 */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.action-btn:hover {
    color: var(--color-black);
    background-color: var(--color-gray-100);
}

.language-selector {
    margin-left: var(--spacing-md);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background-color: var(--color-gray-100);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.hamburger {
    position: relative;
    width: 24px;
    height: 2px;
    background-color: var(--color-black);
    transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-black);
    transition: all var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.mobile-menu-btn.active .hamburger {
    background-color: transparent;
}

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

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

/* ============================================
   4. Hero Banner 区域
   ============================================ */
.hero-section {
    position: relative;
    min-height: 600px;
    padding-top: var(--header-height);
    background-color: var(--color-black);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-waves {
    position: absolute;
    right: -200px;
    top: 50%;
    transform: translateY(-50%);
    width: 800px;
    height: 800px;
    background: repeating-radial-gradient(
        circle at center,
        transparent 0,
        transparent 40px,
        rgba(255, 255, 255, 0.03) 40px,
        rgba(255, 255, 255, 0.03) 41px
    );
    border-radius: 50%;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 550px;
}

.hero-title {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    line-height: 1.8;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   5. 产品展示区域
   ============================================ */
.products-section {
    background-color: var(--bg-light);
    padding: var(--spacing-4xl) 0;
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.products-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.3;
}

.section-title strong {
    color: var(--color-black);
}

.shop-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-black);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.shop-btn:hover {
    border-color: var(--color-black);
    background-color: var(--color-gray-50);
}

.shop-btn svg {
    transition: transform var(--transition-fast);
}

.shop-btn:hover svg {
    transform: translateX(4px);
}

/* 产品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.product-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-link {
    display: block;
    padding: var(--spacing-xl);
}

.product-image {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.product-image img {
    max-height: 200px;
    object-fit: contain;
}

.product-info {
    text-align: left;
}

.product-name {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.product-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.product-price {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-primary);
}

.product-sales {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

/* ============================================
   6. 产品展示图片区域
   ============================================ */
.showcase-section {
    background-color: var(--bg-light);
    padding: 0;
}

.showcase-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.showcase-media {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.showcase-media img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ============================================
   7. 安全特性区域
   ============================================ */
.security-section {
    background-color: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

.security-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3xl);
}

.security-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.security-visual img {
    max-width: 100%;
    height: auto;
}

.security-text {
    flex: 1;
    max-width: 500px;
}

.security-text .section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    line-height: 1.6;
}

.highlight {
    color: var(--color-primary);
}

.highlight-green {
    color: var(--color-accent-green);
}

/* ============================================
   8. 支持的加密货币区域
   ============================================ */
.crypto-section {
    background-color: var(--color-white);
    padding: var(--spacing-4xl) 0;
    overflow: hidden;
}

.crypto-header {
    margin-bottom: var(--spacing-3xl);
}

.crypto-header .section-title {
    margin-bottom: var(--spacing-md);
}

.crypto-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

.crypto-icons {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) 0;
    min-height: 300px;
}

.crypto-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-base);
}

.crypto-icon:hover {
    transform: scale(1.1);
}

.crypto-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.crypto-icon.bitcoin {
    width: 100px;
    height: 100px;
}

.crypto-icon.tether {
    width: 90px;
    height: 90px;
}

.crypto-icon.ethereum {
    width: 80px;
    height: 80px;
}

.crypto-icon.bnb {
    width: 75px;
    height: 75px;
}

.crypto-icon.gift {
    width: 70px;
    height: 70px;
}

.crypto-icon.solana {
    width: 60px;
    height: 60px;
}

.crypto-icon.cosmos {
    width: 55px;
    height: 55px;
}

.crypto-icon.usdc {
    width: 50px;
    height: 50px;
}

.crypto-waves {
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
    background: repeating-linear-gradient(
        90deg,
        transparent 0,
        transparent 8px,
        var(--color-gray-200) 8px,
        var(--color-gray-200) 9px
    );
    opacity: 0.5;
}

/* ============================================
   9. Ledger Live 应用区域
   ============================================ */
.ledger-live-section {
    background-color: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

.live-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.live-header .section-title {
    margin-bottom: var(--spacing-md);
}

.live-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.feature-icon {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.feature-icon img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.feature-desc {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

.feature-preview {
    display: flex;
    justify-content: center;
}

.feature-preview img {
    max-width: 280px;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   10. 联系方式和订阅区域
   ============================================ */
.contact-section {
    background-color: var(--color-dark);
    padding: var(--spacing-4xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-info {
    color: var(--color-white);
}

.contact-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
}

.contact-methods {
    margin-bottom: var(--spacing-xl);
}

.contact-label {
    font-size: var(--text-base);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-md);
}

.contact-icons {
    display: flex;
    gap: var(--spacing-md);
}

.contact-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.contact-icon-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.company-address {
    font-size: var(--text-base);
    color: var(--color-gray-400);
}

.company-address strong {
    color: var(--color-white);
}

/* 订阅区域 */
.newsletter {
    color: var(--color-white);
}

.newsletter-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.newsletter-desc {
    font-size: var(--text-base);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-xl);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.email-input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--text-base);
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-fast);
}

.email-input::placeholder {
    color: var(--color-gray-500);
}

.email-input:focus {
    border-color: var(--color-primary);
    background-color: rgba(255, 255, 255, 0.15);
}

.subscribe-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-black);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.subscribe-btn:hover {
    background-color: var(--color-gray-100);
}

.subscribe-btn svg {
    transition: transform var(--transition-fast);
}

.subscribe-btn:hover svg {
    transform: translateX(4px);
}

.privacy-notice {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    line-height: 1.6;
}

.privacy-notice a {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.privacy-notice a:hover {
    color: var(--color-primary);
}

/* ============================================
   11. 页脚
   ============================================ */
.footer {
    background-color: var(--color-dark);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-gray-400);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    text-align: center;
}

/* ============================================
   12. 在线客服浮动按钮
   ============================================ */
.chat-widget {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 999;
}

.chat-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    color: var(--color-white);
    background: linear-gradient(135deg, #00b4ff, #0099ff);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 20px rgba(0, 180, 255, 0.4);
    transition: all var(--transition-base);
}

.chat-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 180, 255, 0.5);
}

/* ============================================
   13. 响应式设计 - 平板端
   ============================================ */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid .feature-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }
    
    .security-content {
        flex-direction: column;
        text-align: center;
    }
    
    .security-text {
        max-width: 100%;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }
    
    .crypto-icons {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ============================================
   14. 响应式设计 - 移动端
   ============================================ */
@media (max-width: 768px) {
    :root {
        --header-height: var(--header-height-mobile);
    }
    
    .header-container {
        padding: 0 var(--spacing-md);
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-white);
        padding: calc(var(--header-height) + var(--spacing-xl)) var(--spacing-xl) var(--spacing-xl);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 1000;
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }
    
    .nav-link {
        font-size: var(--text-xl);
    }
    
    .header-actions {
        display: none;
    }
    
    /* Hero */
    .hero-section {
        min-height: auto;
    }
    
    .hero-container {
        flex-direction: column;
        padding: var(--spacing-2xl) var(--spacing-md);
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-image {
        margin-top: var(--spacing-xl);
    }
    
    /* 产品 */
    .products-section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-container {
        padding: 0 var(--spacing-md);
    }
    
    .products-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .product-link {
        padding: var(--spacing-md);
    }
    
    .product-name {
        font-size: var(--text-base);
    }
    
    .product-price {
        font-size: var(--text-base);
    }
    
    .product-sales {
        font-size: var(--text-xs);
    }
    
    /* 功能区域 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .features-grid .feature-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }
    
    /* 联系区域 */
    .contact-section {
        padding: var(--spacing-2xl) 0;
    }
    
    .contact-title,
    .newsletter-title {
        font-size: var(--text-2xl);
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .subscribe-btn {
        width: 100%;
        justify-content: center;
    }
    
    /* 页脚 */
    .footer-container {
        padding: 0 var(--spacing-md);
    }
    
    /* 客服按钮 */
    .chat-widget {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .chat-btn {
        width: 50px;
        height: 50px;
    }
}

/* ============================================
   15. 响应式设计 - 小屏移动端
   ============================================ */
@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        max-width: 100%;
    }
    
    .crypto-icons {
        gap: var(--spacing-md);
    }
    
    .crypto-icon.bitcoin {
        width: 70px;
        height: 70px;
    }
    
    .crypto-icon.tether {
        width: 60px;
        height: 60px;
    }
    
    .crypto-icon.ethereum {
        width: 55px;
        height: 55px;
    }
}

/* ============================================
   16. 打印样式
   ============================================ */
@media print {
    .header,
    .chat-widget,
    .mobile-menu-btn {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    .hero-section {
        background: #f5f5f5 !important;
        color: #000 !important;
        padding-top: 0;
    }
    
    .hero-title,
    .section-title {
        color: #000 !important;
    }
    
    a {
        text-decoration: underline;
    }
}

/* ============================================
   17. 动画效果
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 页面加载动画 */
.product-card,
.feature-card {
    animation: fadeIn 0.5s ease forwards;
}

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }

/* ============================================
   18. 高对比度模式支持
   ============================================ */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #6d28d9;
        --color-gray-500: #4b5563;
    }
    
    .nav-link,
    .product-name,
    .feature-title {
        font-weight: 600;
    }
    
    .product-card,
    .feature-card {
        border: 2px solid var(--color-gray-300);
    }
}

/* ============================================
   19. 减少动画模式
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* ============================================
   20. 视频播放器样式
   ============================================ */
.video-section {
    background-color: var(--bg-light);
    padding: var(--spacing-2xl) 0 var(--spacing-4xl);
}

.video-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background-color: var(--color-black);
    box-shadow: var(--shadow-xl);
}

.product-video {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background-color: var(--color-black);
}

/* 视频控制器 */
.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.video-wrapper:hover .video-controls,
.video-wrapper:focus-within .video-controls {
    opacity: 1;
}

/* 全屏时始终显示控制器 */
.video-wrapper:fullscreen .video-controls {
    opacity: 1;
}

/* 控制按钮通用样式 */
.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-white);
    background-color: transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.control-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.control-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 时间显示 */
.time-display {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-sm);
    color: var(--color-white);
    font-family: var(--font-family-mono);
    white-space: nowrap;
    flex-shrink: 0;
}

.time-separator {
    opacity: 0.7;
}

/* 进度条容器 */
.progress-container {
    flex: 1;
    height: 40px;
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0 var(--spacing-sm);
}

.progress-bar {
    position: relative;
    width: 100%;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    overflow: visible;
}

.progress-container:hover .progress-bar {
    height: 6px;
}

/* 缓冲进度 */
.progress-buffered {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-full);
    width: 0;
    transition: width 0.1s linear;
}

/* 播放进度 */
.progress-played {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
    width: 0;
    z-index: 1;
}

/* 进度条拖动手柄 */
.progress-handle {
    position: absolute;
    top: 50%;
    left: 0;
    width: 14px;
    height: 14px;
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    z-index: 2;
    opacity: 0;
    transition: opacity var(--transition-fast);
    cursor: grab;
}

.progress-container:hover .progress-handle {
    opacity: 1;
}

.progress-handle:active {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(1.2);
}

/* 音量控制 */
.volume-control {
    display: flex;
    align-items: center;
}

/* 大播放按钮覆盖层 */
.video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.3);
    transition: opacity var(--transition-base);
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.big-play-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    color: var(--color-white);
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    backdrop-filter: blur(4px);
}

.big-play-btn:hover {
    background-color: var(--color-primary);
    transform: scale(1.1);
}

.big-play-btn svg {
    margin-left: 4px; /* 视觉居中调整 */
}

/* 全屏样式 */
.video-wrapper:fullscreen {
    border-radius: 0;
    max-width: none;
}

.video-wrapper:fullscreen .product-video {
    height: 100vh;
    object-fit: contain;
}

.video-wrapper:fullscreen .video-controls {
    padding: var(--spacing-lg) var(--spacing-xl);
}

.video-wrapper:fullscreen .control-btn {
    width: 48px;
    height: 48px;
}

.video-wrapper:fullscreen .control-btn svg {
    width: 28px;
    height: 28px;
}

.video-wrapper:fullscreen .time-display {
    font-size: var(--text-base);
}

.video-wrapper:fullscreen .big-play-btn {
    width: 100px;
    height: 100px;
}

.video-wrapper:fullscreen .big-play-btn svg {
    width: 50px;
    height: 50px;
}

/* 响应式 - 平板 */
@media (max-width: 1024px) {
    .video-container {
        padding: 0 var(--spacing-lg);
    }
}

/* 响应式 - 移动端 */
@media (max-width: 768px) {
    .video-section {
        padding: var(--spacing-lg) 0 var(--spacing-2xl);
    }
    
    .video-container {
        padding: 0 var(--spacing-md);
    }
    
    .video-wrapper {
        border-radius: var(--radius-lg);
    }
    
    .video-controls {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-sm);
        opacity: 1; /* 移动端始终显示 */
    }
    
    .control-btn {
        width: 36px;
        height: 36px;
    }
    
    .control-btn svg {
        width: 20px;
        height: 20px;
    }
    
    .time-display {
        font-size: var(--text-xs);
    }
    
    .progress-container {
        padding: 0;
    }
    
    .progress-handle {
        width: 16px;
        height: 16px;
        opacity: 1; /* 移动端始终显示 */
    }
    
    .big-play-btn {
        width: 60px;
        height: 60px;
    }
    
    .big-play-btn svg {
        width: 30px;
        height: 30px;
    }
    
    /* 移动端隐藏音量按钮（大部分设备使用物理按钮） */
    .volume-control {
        display: none;
    }
}

/* 响应式 - 小屏移动端 */
@media (max-width: 480px) {
    .video-controls {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .control-btn {
        width: 32px;
        height: 32px;
    }
    
    .big-play-btn {
        width: 50px;
        height: 50px;
    }
    
    .big-play-btn svg {
        width: 24px;
        height: 24px;
    }
}
/* ============================================
   移动端APP按钮样式
   ============================================ */

/* PC端隐藏 */
.mobile-app-btn {
    display: none;
}

/* 移动端显示 */
@media (max-width: 768px) {
    .mobile-app-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-left: auto;
        padding: 8px 16px;
        font-size: 14px;
        font-weight: 500;
        color: #ffffff;
        background-color: #7c3aed;
        border-radius: 8px;
        white-space: nowrap;
        text-decoration: none;
        transition: background-color 0.15s ease;
    }
    
    .mobile-app-btn:hover,
    .mobile-app-btn:active {
        background-color: #5b21b6;
    }
    
    .mobile-app-btn:focus {
        outline: 2px solid #a78bfa;
        outline-offset: 2px;
    }
    
}

/* ============================================
   APP页面专用样式 (app.css)
   ============================================ */

/* 紫色文字 */
.text-purple {
    color: #a78bfa;
}

/* 移动端最新产品按钮 */
.mobile-product-btn {
    display: none;
}

/* ============================================
   Hero 区域
   ============================================ */
.app-hero {
    position: relative;
    min-height: 100vh;
    padding-top: 80px;
    background-color: #000000;
    overflow: hidden;
}

.app-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 模糊光圈 */
.blur-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.blur-1 {
    width: 400px;
    height: 400px;
    background: rgba(124, 58, 237, 0.5);
    top: 10%;
    left: 5%;
}

.blur-2 {
    width: 300px;
    height: 300px;
    background: rgba(99, 102, 241, 0.4);
    top: 30%;
    right: 10%;
}

.blur-3 {
    width: 250px;
    height: 250px;
    background: rgba(139, 92, 246, 0.4);
    bottom: 20%;
    left: 20%;
}

.app-hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

.app-hero-content {
    flex: 1;
    max-width: 550px;
}

.app-hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.app-hero-desc {
    font-size: 1.125rem;
    color: #9ca3af;
    line-height: 1.8;
}

.app-hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-hero-image img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   下载区域
   ============================================ */
.app-download {
    position: relative;
    background-color: #000000;
    padding: 100px 0;
    overflow: hidden;
}

.app-download-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.blur-4 {
    width: 400px;
    height: 400px;
    background: rgba(124, 58, 237, 0.3);
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
}

.blur-5 {
    width: 300px;
    height: 300px;
    background: rgba(99, 102, 241, 0.3);
    bottom: -100px;
    left: 10%;
}

.blur-6 {
    width: 350px;
    height: 350px;
    background: rgba(139, 92, 246, 0.25);
    bottom: -100px;
    right: 5%;
}

.app-download-container {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

.app-download-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
}

.app-download-desc {
    font-size: 1.125rem;
    color: #d1d5db;
    line-height: 1;
    margin-bottom: 1rem;
}

.app-download-subtitle {
    font-size: 1rem;
    color: #9ca3af;
    margin-bottom: 3rem;
}

/* 下载按钮 */
.app-download-btns {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.app-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem 0.75rem 0.75rem;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    color: #ffffff;
    text-decoration: none;
    transition: all 0.25s ease;
    min-width: 200px;
}

.app-btn:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.app-btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    
    background-color: #ffffff;
    border-radius: 0.75rem;
    flex-shrink: 0;
}

.app-btn-icon svg {
    fill: #000000;
    width: 28px;
    height: 28px;
}




.ios-logo {
    justify-content: center;
    width: 28px;
    height: 28px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #000000;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
}

.app-btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    /*width: 60px;*/
    justify-content: center;
}

/* 平台文字统一宽度，iOS / Android 对齐 */
.app-btn-text span:last-child {
    width: 70px;               /* 可调整，确保 iOS 和 Android 行宽一致 */
    display: inline-block;
}

.app-btn-label {
    font-size: 0.75rem;
    color: #9ca3af;
    line-height: 1;
}

.app-btn-platform {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    line-height: 1;
}
.app-btn {
    display: flex; /* 确保图标和文本能够水平排列 */
    align-items: center; /* 确保图标和文本在垂直方向上居中对齐 */
    gap: 1rem; /* 增加图标和文本之间的间距，可调整 */
    
    /* 假设按钮的整体样式，确保两个按钮尺寸一致 */
    width: 300px; /* 建议设置一个统一的宽度 */
    padding: 16px 70px;
    background: #25252d;
    border-radius: 12px;
    text-decoration: none;
    box-sizing: border-box; /* 确保 padding 不会影响宽度 */
}

/* 移动端按钮适配 */
@media (max-width: 768px) {
    .app-download-btns {
        flex-direction: column;
        gap: 1rem;
    }
    
    .app-btn {
        width: 100%;
        max-width: 280px;
        justify-content: flex-start;
    }
}


/* ============================================
   PC端确保导航显示
   ============================================ */
@media (min-width: 769px) {
    .mobile-product-btn,
    .mobile-menu-btn {
        display: none !important;
    }
    
    .main-nav {
        display: flex !important;
    }
    
    .header-actions {
        display: flex !important;
    }
}

/* ============================================
   平板端适配
   ============================================ */
@media (max-width: 1024px) {
    .app-hero-container {
        flex-direction: column;
        text-align: center;
        padding: 60px 2rem;
    }
    
    .app-hero-content {
        max-width: 100%;
    }
    
    .app-hero-title {
        font-size: 2.5rem;
    }
    
    .app-hero-image {
        margin-top: 2rem;
    }
}

/* ============================================
   移动端适配
   ============================================ */
@media (max-width: 768px) {
    /* 移动端最新产品按钮 */
    .mobile-product-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-left: auto;
        margin-right: 1rem;
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
        font-weight: 500;
        color: #ffffff;
        background-color: #7c3aed;
        border-radius: 0.5rem;
        text-decoration: none;
        transition: background-color 0.15s ease;
    }
    
    .mobile-product-btn:hover {
        background-color: #5b21b6;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ffffff;
        padding: 100px 2rem 2rem;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        z-index: 1000;
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
    
    .header-actions {
        display: none;
    }
    
    /* Hero */
    .app-hero {
        min-height: auto;
        padding-top: 60px;
    }
    
    .app-hero-container {
        flex-direction: column;
        text-align: center;
        padding: 40px 1rem;
        gap: 2rem;
    }
    
    .app-hero-title {
        font-size: 1.75rem;
    }
    
    .app-hero-desc {
        font-size: 1rem;
    }
    
    .blur-1 {
        width: 200px;
        height: 200px;
    }
    
    .blur-2 {
        width: 150px;
        height: 150px;
    }
    
    .blur-3 {
        width: 120px;
        height: 120px;
    }
    
    /* 下载区域 */
    .app-download {
        padding: 60px 0;
    }
    
    .app-download-container {
        padding: 0 1rem;
    }
    
    .app-download-title {
        font-size: 1.5rem;
    }
    
    .app-download-desc {
        font-size: 1rem;
    }
    
    .app-download-desc br {
        display: none;
    }
    
    .app-download-btns {
        flex-direction: column;
        gap: 1rem;
    }
    
    .app-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .blur-4,
    .blur-5,
    .blur-6 {
        width: 200px;
        height: 200px;
    }
    
    /* 客服按钮 */
    .chat-widget {
        bottom: 1rem;
        right: 1rem;
    }
    
    .chat-btn {
        width: 50px;
        height: 50px;
    }
}

/* ============================================
   小屏手机适配
   ============================================ */
@media (max-width: 480px) {
    .app-hero-title {
        font-size: 1.5rem;
    }
    
    .app-download-title {
        font-size: 1.25rem;
    }
    
    .app-btn {
        padding: 0.875rem 1.5rem;
    }
}
/* ============================================
   产品页面专用样式
   添加到 style.css 末尾
   ============================================ */

/* ============================================
   产品页面 Hero Banner
   ============================================ */
.hero-banner {
    position: relative;
    margin-top: var(--header-height);
    background-color: var(--color-black);
    overflow: hidden;
}

/* PC端横幅 - 默认显示 */
.banner-pc {
    display: block;
    width: 100%;
}

.banner-pc img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 移动端竖图 - 默认隐藏 */
.banner-mobile {
    display: none;
    width: 100%;
}

.banner-mobile img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Banner 文字内容 */
.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    width: 90%;
    max-width: 600px;
}

.banner-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.banner-desc {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

/* ============================================
   产品列表区域
   ============================================ */
.products-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* ============================================
   移动端导航菜单
   ============================================ */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background-color: var(--color-white);
    z-index: 999;
    padding: calc(var(--header-height-mobile) + 2rem) 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-link {
    display: block;
    padding: 1rem;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-gray-100);
}

/* ============================================
   页脚扩展样式
   ============================================ */
.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.footer-desc {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    line-height: 1.7;
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-links-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links ul li a {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-links ul li a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

/* ============================================
   平板端适配 (769px - 1024px)
   ============================================ */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-brand {
        max-width: 100%;
    }
}

/* ============================================
   移动端适配 (max-width: 768px)
   ============================================ */
@media (max-width: 768px) {
    /* Banner - 切换为竖图 */
    .hero-banner {
        margin-top: 60px;
    }
    
    /* 隐藏PC端横幅 */
    .banner-pc {
        display: none !important;
    }
    
    /* 显示移动端竖图 */
    .banner-mobile {
        display: block !important;
    }
    
    .banner-content {
        top: 15%;
        transform: translate(-50%, 0);
    }
    
    .banner-title {
        font-size: 1.75rem;
    }
    
    .banner-desc {
        font-size: 1rem;
    }
    
    /* 产品区域 */
    .products-container {
        padding: 0 1rem;
    }
    
    /* 页脚 */
    .footer-content {
        gap: 2rem;
    }
    
    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

/* ============================================
   小屏手机适配 (max-width: 480px)
   ============================================ */
@media (max-width: 480px) {
    .banner-title {
        font-size: 1.5rem;
    }
    
    .banner-desc {
        font-size: 0.875rem;
    }
    
    .footer-nav {
        grid-template-columns: 1fr;
    }
}
/* PC端横幅 - 自适应高度 */
.banner-pc {
    display: block;
    width: 100%;
    max-height: 500px;
    overflow: hidden;
}

.banner-pc img {
    width: 100%;
    height: 100%;
    max-height: 500px;
    object-fit: cover;
    object-position: center;
}
/* Header容器 */
.header-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    position: relative;
}

/* Logo靠左 */
.logo {
    position: absolute;
    left: 2rem;
}

/* 主导航居中 */
.main-nav {
    width: 100%;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}
/* ============================================
   Banner 区域修复
   ============================================ */

/* Banner容器 */
.hero-banner {
    position: relative;
    margin-top: var(--header-height);
    background-color: #000000;
    overflow: hidden;
}

/* PC端横幅 - 默认显示 */
.banner-pc {
    display: block;
    width: 100%;
    background-color: #000000;
}

.banner-pc img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 移动端竖图 - 默认隐藏 */
.banner-mobile {
    display: none;
    width: 100%;
    background-color: #000000;
}

.banner-mobile img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ============================================
   移动端适配 - 切换Banner
   ============================================ */
@media (max-width: 768px) {
    .hero-banner {
        margin-top: 60px;
        background-color: #000000;
    }
    
    /* 隐藏PC端横幅 */
    .banner-pc {
        display: none !important;
    }
    
    /* 显示移动端竖图 */
    .banner-mobile {
        display: block !important;
        background-color: #000000;
    }
}
/* ============================================
   商品详情页样式
   添加到 style.css 末尾
   ============================================ */

/* 页面容器 */
.product-page {
    padding-top: var(--header-height);
    background-color: var(--color-white);
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb {
    background-color: var(--color-gray-50);
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.breadcrumb-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    color: var(--color-gray-500);
}

.breadcrumb-item a {
    color: var(--color-gray-600);
    transition: color 0.2s;
}

.breadcrumb-item a:hover {
    color: var(--color-primary);
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: var(--color-gray-400);
}

.breadcrumb-item.active {
    color: var(--color-gray-900);
    font-weight: 500;
}

/* ============================================
   商品详情区域
   ============================================ */
.product-detail {
    padding: 2.5rem 0;
}

.product-detail-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

/* ============================================
   商品图片区域
   ============================================ */
.product-gallery {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
}

.gallery-main {
    width: 100%;
    aspect-ratio: 1;
    background-color: var(--color-gray-50);
    border-radius: 1rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.gallery-thumbs {
    display: flex;
    gap: 0.75rem;
}

.thumb-item {
    width: 80px;
    height: 80px;
    padding: 0;
    border: 2px solid var(--color-gray-200);
    border-radius: 0.5rem;
    background-color: var(--color-white);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.2s;
}

.thumb-item:hover {
    border-color: var(--color-gray-400);
}

.thumb-item.active {
    border-color: var(--color-primary);
}

.thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ============================================
   商品信息区域
   ============================================ */
.product-info-detail {
    padding: 1rem 0;
}

.product-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.product-price-box {
    margin-bottom: 1.5rem;
}

.price-current {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-black);
}

/* 商品属性 */
.product-attributes {
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
    padding: 1.5rem 0;
    margin-bottom: 1.5rem;
}

.attribute-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    font-size: 0.9375rem;
}

.attribute-label {
    color: var(--color-gray-500);
    min-width: 80px;
}

.attribute-value {
    color: var(--color-gray-700);
}

.attribute-value.in-stock {
    color: #10b981;
}

/* 购买按钮 */
.product-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-add-cart,
.btn-buy-now {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.25s;
}

.btn-add-cart {
    color: #ffffff;
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 50%, #6d28d9 100%);
    border: none;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-add-cart:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 50%, #5b21b6 100%);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
    transform: translateY(-2px);
}

.btn-buy-now {
    color: var(--color-gray-700);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
}

.btn-buy-now:hover {
    border-color: var(--color-gray-400);
    background-color: var(--color-gray-50);
}

/* 收藏按钮 */
.btn-wishlist {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0;
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s;
}

.btn-wishlist:hover {
    color: var(--color-primary);
}

.btn-wishlist:hover svg {
    fill: var(--color-primary);
    stroke: var(--color-primary);
}

/* ============================================
   通用区块标题
   ============================================ */
.section-heading {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-gray-200);
}

/* ============================================
   商品参数区域
   ============================================ */
.product-specs {
    background-color: var(--color-gray-50);
    padding: 3rem 0;
}

.specs-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.specs-table {
    background-color: var(--color-white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.specs-table table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--color-gray-100);
}

.specs-table tr:last-child {
    border-bottom: none;
}

.specs-table th,
.specs-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.9375rem;
}

.specs-table th {
    width: 180px;
    background-color: var(--color-gray-50);
    color: var(--color-gray-600);
    font-weight: 500;
}

.specs-table td {
    color: var(--color-gray-800);
}

/* ============================================
   商品介绍区域
   ============================================ */
.product-description {
    padding: 3rem 0;
}

.description-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.description-content {
    max-width: 900px;
}

.description-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-black);
    margin: 2rem 0 1rem;
}

.description-content h3:first-child {
    margin-top: 0;
}

.description-content p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.description-images {
    margin-top: 2.5rem;
}

.description-images figure {
    margin: 0 0 2rem;
}

.description-images img {
    width: 100%;
    height: auto;
    border-radius: 0.75rem;
}

.description-images figcaption {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    text-align: center;
}

/* ============================================
   常见问题区域
   ============================================ */
.product-faq {
    background-color: var(--color-gray-50);
    padding: 3rem 0;
}

.faq-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.faq-list {
    max-width: 900px;
}

.faq-item {
    background-color: var(--color-white);
    border-radius: 0.75rem;
    margin-bottom: 0.75rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-gray-800);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background-color 0.2s;
}

.faq-question:hover {
    background-color: var(--color-gray-50);
}

.faq-question svg {
    flex-shrink: 0;
    margin-left: 1rem;
    transition: transform 0.3s;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.25rem;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-gray-600);
}

/* ============================================
   商品详情页 - 平板端适配
   ============================================ */
@media (max-width: 1024px) {
    .product-detail-container {
        gap: 2.5rem;
    }
    
    .product-gallery {
        position: static;
    }
    
    .specs-table th {
        width: 150px;
    }
}

/* ============================================
   商品详情页 - 移动端适配
   ============================================ */
@media (max-width: 768px) {
    .product-page {
        padding-top: 60px;
    }
    
    .breadcrumb-container {
        padding: 0 1rem;
    }
    
    .product-detail {
        padding: 1.5rem 0;
    }
    
    .product-detail-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .gallery-thumbs {
        gap: 0.5rem;
    }
    
    .thumb-item {
        width: 70px;
        height: 70px;
    }
    
    .product-title {
        font-size: 1.5rem;
    }
    
    .price-current {
        font-size: 1.5rem;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .btn-add-cart,
    .btn-buy-now {
        width: 100%;
    }
    
    .product-specs {
        padding: 2rem 0;
    }
    
    .specs-container {
        padding: 0 1rem;
    }
    
    .specs-table th,
    .specs-table td {
        padding: 0.875rem 1rem;
        font-size: 0.875rem;
    }
    
    .specs-table th {
        width: 100px;
    }
    
    .product-description {
        padding: 2rem 0;
    }
    
    .description-container {
        padding: 0 1rem;
    }
    
    .description-content h3 {
        font-size: 1.125rem;
    }
    
    .description-content p {
        font-size: 0.9375rem;
    }
    
    .product-faq {
        padding: 2rem 0;
    }
    
    .faq-container {
        padding: 0 1rem;
    }
    
    .faq-question {
        padding: 1rem 1.25rem;
        font-size: 0.9375rem;
    }
    
    .faq-answer p {
        padding: 0 1.25rem 1rem;
        font-size: 0.875rem;
    }
    
    .section-heading {
        font-size: 1.25rem;
    }
}

/* ============================================
   商品详情页 - 小屏手机适配
   ============================================ */
@media (max-width: 480px) {
    .thumb-item {
        width: 60px;
        height: 60px;
    }
    
    .product-title {
        font-size: 1.25rem;
    }
    
    .price-current {
        font-size: 1.375rem;
    }
    
    .specs-table th {
        width: 90px;
        font-size: 0.8125rem;
    }
    
    .specs-table td {
        font-size: 0.8125rem;
    }
}
/* ============================================
   产品亮点区域（Nano S Plus 新增）
   添加到 style.css
   ============================================ */

.product-highlights {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-gray-200);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    font-size: 0.9375rem;
    color: var(--color-gray-700);
}

.highlight-item svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .product-highlights {
        margin-top: 1rem;
        padding-top: 1rem;
    }
    
    .highlight-item {
        font-size: 0.875rem;
    }
}

/* ========================================
   Ledger 硬件钱包产品详情区样式
   独立CSS文件 - 可直接引入现有页面
   ======================================== */

/* ==================== 基础变量 ==================== */
:root {
    --ledger-primary: #000000;
    --ledger-primary-light: #333333;
    --ledger-secondary: #ff5722;
    --ledger-accent: #4caf50;
    --ledger-blue: #2196f3;
    --ledger-purple: #9c27b0;
    --ledger-gold: #ff9800;
    --ledger-green: #4caf50;
    --ledger-bg: #f8f9fa;
    --ledger-bg-dark: #1a1a1a;
    --ledger-text: #333333;
    --ledger-text-light: #666666;
    --ledger-border: #e0e0e0;
    --ledger-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --ledger-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --ledger-radius: 16px;
    --ledger-radius-sm: 8px;
}

/* ==================== 区块容器 ==================== */
.ledger-products-detail {
    padding: 80px 0;
    background: linear-gradient(180deg, #ffffff 0%, var(--ledger-bg) 100%);
}

.ledger-detail-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 区块标题 ==================== */
.ledger-detail-header {
    text-align: center;
    margin-bottom: 60px;
}

.ledger-official-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--ledger-primary) 0%, var(--ledger-primary-light) 100%);
    color: #ffffff;
    padding: 8px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.ledger-detail-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--ledger-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.ledger-detail-title strong {
    background: linear-gradient(135deg, var(--ledger-secondary) 0%, var(--ledger-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ledger-detail-subtitle {
    font-size: 18px;
    color: var(--ledger-text-light);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ==================== 对比表格区域 ==================== */
.ledger-compare-section {
    background: #ffffff;
    border-radius: var(--ledger-radius);
    padding: 40px;
    margin-bottom: 60px;
    box-shadow: var(--ledger-shadow);
}

.ledger-compare-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 30px;
}

.ledger-compare-icon {
    font-size: 28px;
}

.ledger-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.ledger-compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.ledger-compare-table th,
.ledger-compare-table td {
    padding: 16px 20px;
    text-align: center;
    border-bottom: 1px solid var(--ledger-border);
}

.ledger-compare-table th {
    background: var(--ledger-primary);
    color: #ffffff;
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
}

.ledger-compare-table th:first-child {
    border-radius: var(--ledger-radius-sm) 0 0 0;
}

.ledger-compare-table th:last-child {
    border-radius: 0 var(--ledger-radius-sm) 0 0;
}

.ledger-compare-table td {
    font-size: 14px;
    color: var(--ledger-text);
}

.ledger-compare-table td:first-child {
    background: var(--ledger-bg);
    font-weight: 600;
    text-align: left;
}

.ledger-compare-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

.ledger-compare-table tbody tr:last-child td:first-child {
    border-radius: 0 0 0 var(--ledger-radius-sm);
}

.ledger-yes {
    color: var(--ledger-accent);
    font-weight: 700;
}

.ledger-no {
    color: #999999;
}

/* ==================== 产品卡片网格 ==================== */
.ledger-products-cards {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: 60px;
}

/* ==================== 单个产品卡片 ==================== */
.ledger-product-card {
    background: #ffffff;
    border-radius: var(--ledger-radius);
    overflow: hidden;
    box-shadow: var(--ledger-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ledger-product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--ledger-shadow-hover);
}

/* 卡片顶部横幅 */
.ledger-card-banner {
    padding: 30px 40px;
    color: #ffffff;
    position: relative;
}

.ledger-banner-green {
    background: linear-gradient(135deg, #9c27b0 0%, #6a1b9a 100%);
}

.ledger-banner-blue {
    background: linear-gradient(135deg, #2196f3 0%, #1565c0 100%);
}

.ledger-banner-purple {
    background: linear-gradient(135deg, #9c27b0 0%, #6a1b9a 100%);
}

.ledger-banner-gold {
    background: linear-gradient(135deg, #ff9800 0%, #e65100 100%);
}

.ledger-card-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}

.ledger-card-name {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
}

.ledger-card-slogan {
    font-size: 16px;
    opacity: 0.9;
}

/* 卡片主体 */
.ledger-card-body {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
    padding: 40px;
}

.ledger-card-image {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    padding: 30px;
    position: sticky;
    top: 100px;
}

.ledger-card-image img {
    max-width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.ledger-card-image:hover img {
    transform: scale(1.05);
}

/* 价格区域 */
.ledger-price-box {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--ledger-bg) 0%, #ffffff 100%);
    border-radius: var(--ledger-radius-sm);
    border: 2px solid var(--ledger-border);
    margin-bottom: 30px;
}

.ledger-price-label {
    font-size: 14px;
    color: var(--ledger-text-light);
}

.ledger-price-value {
    font-size: 28px;
    color: var(--ledger-secondary);
    font-weight: 800;
}

.ledger-price-value strong {
    font-size: 36px;
}

.ledger-price-monthly {
    font-size: 14px;
    color: var(--ledger-text-light);
    margin-left: auto;
    background: var(--ledger-bg);
    padding: 6px 12px;
    border-radius: 20px;
}

/* 产品介绍 */
.ledger-intro {
    margin-bottom: 30px;
}

.ledger-intro h4,
.ledger-specs h4,
.ledger-compatibility h4,
.ledger-features h4,
.ledger-package h4,
.ledger-audience h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--ledger-border);
}

.ledger-intro p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--ledger-text);
    margin-bottom: 16px;
}

.ledger-intro p:last-child {
    margin-bottom: 0;
}

.ledger-intro strong {
    color: var(--ledger-primary);
}

/* 规格网格 */
.ledger-specs {
    margin-bottom: 30px;
}

.ledger-specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.ledger-spec-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    transition: background 0.3s ease;
}

.ledger-spec-item:hover {
    background: #e8e8e8;
}

.ledger-spec-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.ledger-spec-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ledger-spec-text strong {
    font-size: 14px;
    color: var(--ledger-primary);
}

.ledger-spec-text span {
    font-size: 13px;
    color: var(--ledger-text-light);
}

/* 兼容性列表 */
.ledger-compatibility {
    margin-bottom: 30px;
}

.ledger-compat-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-compat-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--ledger-text);
}

.ledger-compat-list li:last-child {
    margin-bottom: 0;
}

.ledger-compat-icon {
    font-size: 20px;
}

/* 功能网格 */
.ledger-features {
    margin-bottom: 30px;
}

.ledger-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.ledger-feature-box {
    padding: 24px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.ledger-feature-box:hover {
    background: #ffffff;
    border-color: var(--ledger-border);
    box-shadow: var(--ledger-shadow);
}

.ledger-feature-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.ledger-feature-box h5 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 10px;
}

.ledger-feature-box p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ledger-text-light);
    margin: 0;
}

/* 包装清单 */
.ledger-package {
    margin-bottom: 30px;
}

.ledger-package-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.ledger-package-list li {
    padding: 12px 16px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    font-size: 14px;
    color: var(--ledger-text);
}

/* 适用人群 */
.ledger-audience {
    margin-bottom: 0;
}

.ledger-audience-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-audience-list li {
    padding: 16px 20px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--ledger-text);
    border-left: 4px solid var(--ledger-secondary);
}

.ledger-audience-list li:last-child {
    margin-bottom: 0;
}

.ledger-audience-list li strong {
    color: var(--ledger-primary);
}

/* ==================== 选购建议区域 ==================== */
.ledger-recommendation {
    background: #ffffff;
    border-radius: var(--ledger-radius);
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: var(--ledger-shadow);
}

.ledger-recommend-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 30px;
}

.ledger-recommend-icon {
    font-size: 28px;
}

.ledger-recommend-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.ledger-recommend-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    transition: all 0.3s ease;
}

.ledger-recommend-item:hover {
    background: #ffffff;
    box-shadow: var(--ledger-shadow);
    transform: translateY(-5px);
}

.ledger-recommend-icon-box {
    width: 60px;
    height: 60px;
    background: var(--ledger-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 16px;
}

.ledger-recommend-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 12px;
}

.ledger-recommend-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ledger-text-light);
    margin: 0;
}

.ledger-recommend-item p strong {
    color: var(--ledger-secondary);
}

/* ==================== 安全提醒区域 ==================== */
.ledger-security-notice {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-radius: var(--ledger-radius);
    padding: 40px;
    border: 2px solid var(--ledger-gold);
}

.ledger-notice-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: #e65100;
    margin-bottom: 20px;
}

.ledger-notice-icon {
    font-size: 28px;
}

.ledger-notice-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--ledger-text);
    margin-bottom: 16px;
}

.ledger-notice-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-notice-list li {
    padding: 12px 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--ledger-text);
    border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
}

.ledger-notice-list li:last-child {
    border-bottom: none;
}

.ledger-notice-list li strong {
    color: #e65100;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .ledger-card-body {
        grid-template-columns: 280px 1fr;
        gap: 30px;
    }
    
    .ledger-recommend-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .ledger-products-detail {
        padding: 60px 0;
    }
    
    .ledger-detail-title {
        font-size: 28px;
    }
    
    .ledger-card-body {
        grid-template-columns: 1fr;
    }
    
    .ledger-card-image {
        position: static;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .ledger-specs-grid,
    .ledger-features-grid,
    .ledger-package-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .ledger-detail-container {
        padding: 0 15px;
    }
    
    .ledger-detail-title {
        font-size: 24px;
    }
    
    .ledger-detail-subtitle {
        font-size: 15px;
    }
    
    .ledger-compare-section,
    .ledger-recommendation,
    .ledger-security-notice {
        padding: 24px;
    }
    
    .ledger-card-banner {
        padding: 24px;
    }
    
    .ledger-card-name {
        font-size: 24px;
    }
    
    .ledger-card-body {
        padding: 24px;
    }
    
    .ledger-price-box {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .ledger-price-monthly {
        margin-left: 0;
        width: 100%;
        text-align: center;
    }
    
    .ledger-recommend-grid {
        grid-template-columns: 1fr;
    }
    
    /* 移动端表格响应式 */
    .ledger-compare-table {
        min-width: auto;
    }
    
    .ledger-compare-table thead {
        display: none;
    }
    
    .ledger-compare-table tbody tr {
        display: block;
        margin-bottom: 20px;
        background: var(--ledger-bg);
        border-radius: var(--ledger-radius-sm);
        padding: 16px;
    }
    
    .ledger-compare-table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 0;
        border-bottom: 1px solid var(--ledger-border);
        text-align: right;
    }
    
    .ledger-compare-table tbody td:first-child {
        background: none;
        text-align: left;
        font-weight: 700;
        color: var(--ledger-primary);
        border-bottom: 2px solid var(--ledger-primary);
        padding-bottom: 12px;
        margin-bottom: 8px;
    }
    
    .ledger-compare-table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--ledger-text-light);
        text-align: left;
    }
    
    .ledger-compare-table tbody td:first-child::before {
        display: none;
    }
    
    .ledger-compare-table tbody td:last-child {
        border-bottom: none;
    }
}

@media (max-width: 480px) {
    .ledger-products-detail {
        padding: 40px 0;
    }
    
    .ledger-detail-title {
        font-size: 20px;
    }
    
    .ledger-official-badge {
        font-size: 12px;
        padding: 6px 16px;
    }
    
    .ledger-card-name {
        font-size: 20px;
    }
    
    .ledger-card-slogan {
        font-size: 14px;
    }
    
    .ledger-price-value {
        font-size: 24px;
    }
    
    .ledger-price-value strong {
        font-size: 28px;
    }
    
    .ledger-compare-title,
    .ledger-recommend-title,
    .ledger-notice-title {
        font-size: 18px;
        flex-direction: column;
        gap: 8px;
    }
}

/* ==================== 动画效果 ==================== */
@keyframes ledgerFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ledger-product-card {
    animation: ledgerFadeIn 0.6s ease forwards;
}

.ledger-product-card:nth-child(1) { animation-delay: 0.1s; }
.ledger-product-card:nth-child(2) { animation-delay: 0.2s; }
.ledger-product-card:nth-child(3) { animation-delay: 0.3s; }
.ledger-product-card:nth-child(4) { animation-delay: 0.4s; }

/* ==================== 打印样式 ==================== */
@media print {
    .ledger-products-detail {
        padding: 20px 0;
    }
    
    .ledger-product-card {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .ledger-card-body {
        grid-template-columns: 1fr;
    }
    
    .ledger-card-image {
        display: none;
    }
}
/* ========================================
   Ledger 硬件钱包产品详情区样式
   独立CSS文件 - 可直接引入现有页面
   ======================================== */

/* ==================== 基础变量 ==================== */
:root {
    --ledger-primary: #000000;
    --ledger-primary-light: #333333;
    --ledger-secondary: #ff5722;
    --ledger-accent: #4caf50;
    --ledger-blue: #2196f3;
    --ledger-purple: #9c27b0;
    --ledger-gold: #ff9800;
    --ledger-green: #4caf50;
    --ledger-bg: #f8f9fa;
    --ledger-bg-dark: #1a1a1a;
    --ledger-text: #333333;
    --ledger-text-light: #666666;
    --ledger-border: #e0e0e0;
    --ledger-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --ledger-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --ledger-radius: 16px;
    --ledger-radius-sm: 8px;
}

/* ==================== 区块容器 ==================== */
.ledger-products-detail {
    padding: 80px 0;
    background: linear-gradient(180deg, #ffffff 0%, var(--ledger-bg) 100%);
}

.ledger-detail-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 区块标题 ==================== */
.ledger-detail-header {
    text-align: center;
    margin-bottom: 60px;
}

.ledger-official-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--ledger-primary) 0%, var(--ledger-primary-light) 100%);
    color: #ffffff;
    padding: 8px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.ledger-detail-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--ledger-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.ledger-detail-title strong {
    background: linear-gradient(135deg, var(--ledger-secondary) 0%, var(--ledger-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ledger-detail-subtitle {
    font-size: 18px;
    color: var(--ledger-text-light);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ==================== 对比表格区域 ==================== */
.ledger-compare-section {
    background: #ffffff;
    border-radius: var(--ledger-radius);
    padding: 40px;
    margin-bottom: 60px;
    box-shadow: var(--ledger-shadow);
}

.ledger-compare-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 30px;
}

.ledger-compare-icon {
    font-size: 28px;
}

.ledger-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.ledger-compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.ledger-compare-table th,
.ledger-compare-table td {
    padding: 16px 20px;
    text-align: center;
    border-bottom: 1px solid var(--ledger-border);
}

.ledger-compare-table th {
    background: var(--ledger-primary);
    color: #ffffff;
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
}

.ledger-compare-table th:first-child {
    border-radius: var(--ledger-radius-sm) 0 0 0;
}

.ledger-compare-table th:last-child {
    border-radius: 0 var(--ledger-radius-sm) 0 0;
}

.ledger-compare-table td {
    font-size: 14px;
    color: var(--ledger-text);
}

.ledger-compare-table td:first-child {
    background: var(--ledger-bg);
    font-weight: 600;
    text-align: left;
}

.ledger-compare-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

.ledger-compare-table tbody tr:last-child td:first-child {
    border-radius: 0 0 0 var(--ledger-radius-sm);
}

.ledger-yes {
    color: var(--ledger-accent);
    font-weight: 700;
}

.ledger-no {
    color: #999999;
}

/* ==================== PC/移动端切换显示 ==================== */
.ledger-desktop-only {
    display: block;
}

.ledger-mobile-only {
    display: none;
}

/* ==================== 移动端产品对比卡片 ==================== */
.ledger-mobile-compare {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.ledger-compare-card {
    background: #ffffff;
    border-radius: var(--ledger-radius-sm);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border: 1px solid var(--ledger-border);
}

.ledger-compare-card-header {
    padding: 16px;
    color: #ffffff;
    text-align: center;
    position: relative;
}

.ledger-compare-card-header h4 {
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 6px 0;
}

.ledger-compare-price {
    display: block;
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 6px;
}

.ledger-compare-tag {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.ledger-bg-green { background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%); }
.ledger-bg-blue { background: linear-gradient(135deg, #2196f3 0%, #1565c0 100%); }
.ledger-bg-purple { background: linear-gradient(135deg, #9c27b0 0%, #6a1b9a 100%); }
.ledger-bg-gold { background: linear-gradient(135deg, #ff9800 0%, #e65100 100%); }

.ledger-compare-card-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-compare-card-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid var(--ledger-border);
    font-size: 12px;
}

.ledger-compare-card-list li:last-child {
    border-bottom: none;
}

.ledger-compare-card-list .label {
    color: var(--ledger-text-light);
    font-weight: 500;
}

.ledger-compare-card-list .value {
    color: var(--ledger-text);
    font-weight: 600;
    text-align: right;
}

.ledger-compare-card-list .value.ledger-yes {
    color: var(--ledger-accent);
}

.ledger-compare-card-list .value.ledger-no {
    color: #bbb;
}

/* ==================== 产品卡片网格 ==================== */
.ledger-products-cards {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: 60px;
}

/* ==================== 单个产品卡片 ==================== */
.ledger-product-card {
    background: #ffffff;
    border-radius: var(--ledger-radius);
    overflow: hidden;
    box-shadow: var(--ledger-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ledger-product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--ledger-shadow-hover);
}

/* 卡片顶部横幅 */
.ledger-card-banner {
    padding: 30px 40px;
    color: #ffffff;
    position: relative;
}

.ledger-banner-green {
    background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
}

.ledger-banner-blue {
    background: linear-gradient(135deg, #2196f3 0%, #1565c0 100%);
}

.ledger-banner-purple {
    background: linear-gradient(135deg, #9c27b0 0%, #6a1b9a 100%);
}

.ledger-banner-gold {
    background: linear-gradient(135deg, #ff9800 0%, #e65100 100%);
}

.ledger-card-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}

.ledger-card-name {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
}

.ledger-card-slogan {
    font-size: 16px;
    opacity: 0.9;
}

/* 卡片主体 */
.ledger-card-body {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
    padding: 40px;
}

.ledger-card-image {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    padding: 30px;
    position: sticky;
    top: 100px;
}

.ledger-card-image img {
    max-width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.ledger-card-image:hover img {
    transform: scale(1.05);
}

/* 价格区域 */
.ledger-price-box {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--ledger-bg) 0%, #ffffff 100%);
    border-radius: var(--ledger-radius-sm);
    border: 2px solid var(--ledger-border);
    margin-bottom: 30px;
}

.ledger-price-label {
    font-size: 14px;
    color: var(--ledger-text-light);
}

.ledger-price-value {
    font-size: 28px;
    color: var(--ledger-secondary);
    font-weight: 800;
}

.ledger-price-value strong {
    font-size: 36px;
}

.ledger-price-monthly {
    font-size: 14px;
    color: var(--ledger-text-light);
    margin-left: auto;
    background: var(--ledger-bg);
    padding: 6px 12px;
    border-radius: 20px;
}

/* 产品介绍 */
.ledger-intro {
    margin-bottom: 30px;
}

.ledger-intro h4,
.ledger-specs h4,
.ledger-compatibility h4,
.ledger-features h4,
.ledger-package h4,
.ledger-audience h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--ledger-border);
}

.ledger-intro p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--ledger-text);
    margin-bottom: 16px;
}

.ledger-intro p:last-child {
    margin-bottom: 0;
}

.ledger-intro strong {
    color: var(--ledger-primary);
}

/* 规格网格 */
.ledger-specs {
    margin-bottom: 30px;
}

.ledger-specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.ledger-spec-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    transition: background 0.3s ease;
}

.ledger-spec-item:hover {
    background: #e8e8e8;
}

.ledger-spec-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.ledger-spec-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ledger-spec-text strong {
    font-size: 14px;
    color: var(--ledger-primary);
}

.ledger-spec-text span {
    font-size: 13px;
    color: var(--ledger-text-light);
}

/* 兼容性列表 */
.ledger-compatibility {
    margin-bottom: 30px;
}

.ledger-compat-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-compat-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--ledger-text);
}

.ledger-compat-list li:last-child {
    margin-bottom: 0;
}

.ledger-compat-icon {
    font-size: 20px;
}

/* 功能网格 */
.ledger-features {
    margin-bottom: 30px;
}

.ledger-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.ledger-feature-box {
    padding: 24px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.ledger-feature-box:hover {
    background: #ffffff;
    border-color: var(--ledger-border);
    box-shadow: var(--ledger-shadow);
}

.ledger-feature-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.ledger-feature-box h5 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 10px;
}

.ledger-feature-box p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ledger-text-light);
    margin: 0;
}

/* 包装清单 */
.ledger-package {
    margin-bottom: 30px;
}

.ledger-package-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.ledger-package-list li {
    padding: 12px 16px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    font-size: 14px;
    color: var(--ledger-text);
}

/* 适用人群 */
.ledger-audience {
    margin-bottom: 0;
}

.ledger-audience-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-audience-list li {
    padding: 16px 20px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--ledger-text);
    border-left: 4px solid var(--ledger-secondary);
}

.ledger-audience-list li:last-child {
    margin-bottom: 0;
}

.ledger-audience-list li strong {
    color: var(--ledger-primary);
}

/* ==================== 选购建议区域 ==================== */
.ledger-recommendation {
    background: #ffffff;
    border-radius: var(--ledger-radius);
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: var(--ledger-shadow);
}

.ledger-recommend-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 30px;
}

.ledger-recommend-icon {
    font-size: 28px;
}

.ledger-recommend-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.ledger-recommend-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--ledger-bg);
    border-radius: var(--ledger-radius-sm);
    transition: all 0.3s ease;
}

.ledger-recommend-item:hover {
    background: #ffffff;
    box-shadow: var(--ledger-shadow);
    transform: translateY(-5px);
}

.ledger-recommend-icon-box {
    width: 60px;
    height: 60px;
    background: var(--ledger-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 16px;
}

.ledger-recommend-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ledger-primary);
    margin-bottom: 12px;
}

.ledger-recommend-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ledger-text-light);
    margin: 0;
}

.ledger-recommend-item p strong {
    color: var(--ledger-secondary);
}

/* ==================== 安全提醒区域 ==================== */
.ledger-security-notice {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-radius: var(--ledger-radius);
    padding: 40px;
    border: 2px solid var(--ledger-gold);
}

.ledger-notice-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: #e65100;
    margin-bottom: 20px;
}

.ledger-notice-icon {
    font-size: 28px;
}

.ledger-notice-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--ledger-text);
    margin-bottom: 16px;
}

.ledger-notice-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ledger-notice-list li {
    padding: 12px 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--ledger-text);
    border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
}

.ledger-notice-list li:last-child {
    border-bottom: none;
}

.ledger-notice-list li strong {
    color: #e65100;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .ledger-card-body {
        grid-template-columns: 280px 1fr;
        gap: 30px;
    }
    
    .ledger-recommend-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .ledger-products-detail {
        padding: 60px 0;
    }
    
    .ledger-detail-title {
        font-size: 28px;
    }
    
    .ledger-card-body {
        grid-template-columns: 1fr;
    }
    
    .ledger-card-image {
        position: static;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .ledger-specs-grid,
    .ledger-features-grid,
    .ledger-package-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .ledger-detail-container {
        padding: 0 15px;
    }
    
    .ledger-detail-title {
        font-size: 24px;
    }
    
    .ledger-detail-subtitle {
        font-size: 15px;
    }
    
    .ledger-compare-section,
    .ledger-recommendation,
    .ledger-security-notice {
        padding: 24px;
    }
    
    .ledger-card-banner {
        padding: 24px;
    }
    
    .ledger-card-name {
        font-size: 24px;
    }
    
    .ledger-card-body {
        padding: 24px;
    }
    
    .ledger-price-box {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .ledger-price-monthly {
        margin-left: 0;
        width: 100%;
        text-align: center;
    }
    
    .ledger-recommend-grid {
        grid-template-columns: 1fr;
    }
    
    /* PC/移动端切换 */
    .ledger-desktop-only {
        display: none;
    }
    
    .ledger-mobile-only {
        display: grid;
    }
    
    .ledger-mobile-compare {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .ledger-products-detail {
        padding: 40px 0;
    }
    
    .ledger-detail-title {
        font-size: 20px;
    }
    
    .ledger-official-badge {
        font-size: 12px;
        padding: 6px 16px;
    }
    
    .ledger-card-name {
        font-size: 20px;
    }
    
    .ledger-card-slogan {
        font-size: 14px;
    }
    
    .ledger-price-value {
        font-size: 24px;
    }
    
    .ledger-price-value strong {
        font-size: 28px;
    }
    
    .ledger-compare-title,
    .ledger-recommend-title,
    .ledger-notice-title {
        font-size: 18px;
        flex-direction: column;
        gap: 8px;
    }
    
    /* 移动端卡片单列显示 */
    .ledger-mobile-compare {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .ledger-compare-card-header h4 {
        font-size: 16px;
    }
    
    .ledger-compare-price {
        font-size: 26px;
    }
    
    .ledger-compare-card-list li {
        padding: 12px 16px;
        font-size: 13px;
    }
}

/* ==================== 动画效果 ==================== */
@keyframes ledgerFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ledger-product-card {
    animation: ledgerFadeIn 0.6s ease forwards;
}

.ledger-product-card:nth-child(1) { animation-delay: 0.1s; }
.ledger-product-card:nth-child(2) { animation-delay: 0.2s; }
.ledger-product-card:nth-child(3) { animation-delay: 0.3s; }
.ledger-product-card:nth-child(4) { animation-delay: 0.4s; }

/* ==================== 打印样式 ==================== */
@media print {
    .ledger-products-detail {
        padding: 20px 0;
    }
    
    .ledger-product-card {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .ledger-card-body {
        grid-template-columns: 1fr;
    }
    
    .ledger-card-image {
        display: none;
    }
}
/* ========================================
   Ledger 常见问题解答区 (FAQ) 样式
   独立CSS文件 - 可直接引入现有页面
   ======================================== */

/* ==================== 基础变量 ==================== */
:root {
    --ledger-faq-primary: #000000;
    --ledger-faq-secondary: #ff5722;
    --ledger-faq-accent: #4caf50;
    --ledger-faq-blue: #2196f3;
    --ledger-faq-purple: #9c27b0;
    --ledger-faq-gold: #ff9800;
    --ledger-faq-bg: #f8f9fa;
    --ledger-faq-text: #333333;
    --ledger-faq-text-light: #666666;
    --ledger-faq-border: #e0e0e0;
    --ledger-faq-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --ledger-faq-radius: 16px;
    --ledger-faq-radius-sm: 8px;
}

/* ==================== 区块容器 ==================== */
.ledger-faq-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--ledger-faq-bg) 0%, #ffffff 100%);
}

.ledger-faq-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 标题区 ==================== */
.ledger-faq-header {
    text-align: center;
    margin-bottom: 50px;
}

.ledger-faq-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--ledger-faq-primary) 0%, #333 100%);
    color: #ffffff;
    padding: 8px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.ledger-faq-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--ledger-faq-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.ledger-faq-title strong {
    background: linear-gradient(135deg, var(--ledger-faq-secondary) 0%, var(--ledger-faq-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ledger-faq-subtitle {
    font-size: 17px;
    color: var(--ledger-faq-text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ==================== 分类标签 ==================== */
.ledger-faq-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.ledger-faq-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #ffffff;
    border: 2px solid var(--ledger-faq-border);
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ledger-faq-text);
    cursor: pointer;
    transition: all 0.3s ease;
}

.ledger-faq-tab:hover {
    border-color: var(--ledger-faq-primary);
    background: var(--ledger-faq-bg);
}

.ledger-faq-tab.active {
    background: var(--ledger-faq-primary);
    border-color: var(--ledger-faq-primary);
    color: #ffffff;
}

.ledger-faq-tab .tab-icon {
    font-size: 18px;
}

.ledger-faq-tab .tab-text {
    white-space: nowrap;
}

/* ==================== 问题列表 ==================== */
.ledger-faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ==================== 单个问题项 ==================== */
.ledger-faq-item {
    background: #ffffff;
    border-radius: var(--ledger-faq-radius);
    box-shadow: var(--ledger-faq-shadow);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.ledger-faq-item:hover {
    border-color: var(--ledger-faq-border);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.12);
}

.ledger-faq-item.hidden {
    display: none;
}

/* ==================== 问题按钮 ==================== */
.ledger-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background 0.3s ease;
}

.ledger-faq-question:hover {
    background: var(--ledger-faq-bg);
}

.ledger-faq-question .faq-icon {
    font-size: 28px;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ledger-faq-bg);
    border-radius: 12px;
}

.ledger-faq-question h3 {
    flex: 1;
    font-size: 17px;
    font-weight: 700;
    color: var(--ledger-faq-primary);
    margin: 0;
    line-height: 1.5;
}

.ledger-faq-question .faq-arrow {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ledger-faq-bg);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.ledger-faq-question .faq-arrow svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s ease;
}

.ledger-faq-item.open .faq-arrow {
    background: var(--ledger-faq-primary);
}

.ledger-faq-item.open .faq-arrow svg {
    transform: rotate(180deg);
    stroke: #ffffff;
}

/* ==================== 答案区域 ==================== */
.ledger-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.ledger-faq-item.open .ledger-faq-answer {
    max-height: 2000px;
}

.ledger-faq-answer > div {
    padding: 0 24px 24px 88px;
    color: var(--ledger-faq-text);
    font-size: 15px;
    line-height: 1.9;
}

.ledger-faq-answer p {
    margin-bottom: 16px;
}

.ledger-faq-answer p:last-child {
    margin-bottom: 0;
}

.ledger-faq-answer ul,
.ledger-faq-answer ol {
    margin: 16px 0;
    padding-left: 24px;
}

.ledger-faq-answer li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.ledger-faq-answer li:last-child {
    margin-bottom: 0;
}

.ledger-faq-answer strong {
    color: var(--ledger-faq-primary);
}

.ledger-faq-answer a {
    color: var(--ledger-faq-blue);
    text-decoration: none;
    font-weight: 600;
}

.ledger-faq-answer a:hover {
    text-decoration: underline;
}

/* 警告提示 */
.ledger-faq-warning {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-left: 4px solid var(--ledger-faq-gold);
    padding: 16px 20px;
    border-radius: 0 var(--ledger-faq-radius-sm) var(--ledger-faq-radius-sm) 0;
    margin: 16px 0;
}

/* ==================== 底部提示区 ==================== */
.ledger-faq-footer {
    margin-top: 60px;
}

.ledger-faq-more {
    background: linear-gradient(135deg, var(--ledger-faq-primary) 0%, #333 100%);
    border-radius: var(--ledger-faq-radius);
    padding: 50px 40px;
    text-align: center;
    color: #ffffff;
}

.ledger-faq-more h3 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 12px;
}

.ledger-faq-more p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.ledger-faq-contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--ledger-faq-secondary);
    color: #ffffff;
    padding: 16px 32px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 87, 34, 0.4);
}

.ledger-faq-contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 87, 34, 0.5);
}

.ledger-faq-contact-btn .btn-icon {
    font-size: 20px;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .ledger-faq-section {
        padding: 60px 0;
    }
    
    .ledger-faq-container {
        padding: 0 16px;
    }
    
    .ledger-faq-title {
        font-size: 26px;
    }
    
    .ledger-faq-subtitle {
        font-size: 15px;
    }
    
    /* 标签横向滚动 */
    .ledger-faq-tabs {
        justify-content: flex-start;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 10px;
        margin: 0 -16px 30px;
        padding-left: 16px;
        padding-right: 16px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .ledger-faq-tabs::-webkit-scrollbar {
        display: none;
    }
    
    .ledger-faq-tab {
        padding: 10px 16px;
        font-size: 13px;
        flex-shrink: 0;
    }
    
    .ledger-faq-tab .tab-icon {
        font-size: 16px;
    }
    
    /* 问题项 */
    .ledger-faq-question {
        padding: 20px 16px;
        gap: 12px;
    }
    
    .ledger-faq-question .faq-icon {
        width: 40px;
        height: 40px;
        font-size: 22px;
        border-radius: 10px;
    }
    
    .ledger-faq-question h3 {
        font-size: 15px;
    }
    
    .ledger-faq-question .faq-arrow {
        width: 28px;
        height: 28px;
    }
    
    .ledger-faq-question .faq-arrow svg {
        width: 16px;
        height: 16px;
    }
    
    /* 答案区域 */
    .ledger-faq-answer > div {
        padding: 0 16px 20px 16px;
        font-size: 14px;
    }
    
    .ledger-faq-answer ul,
    .ledger-faq-answer ol {
        padding-left: 20px;
    }
    
    /* 底部区域 */
    .ledger-faq-more {
        padding: 40px 24px;
    }
    
    .ledger-faq-more h3 {
        font-size: 20px;
    }
    
    .ledger-faq-more p {
        font-size: 14px;
    }
    
    .ledger-faq-contact-btn {
        padding: 14px 24px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .ledger-faq-section {
        padding: 40px 0;
    }
    
    .ledger-faq-badge {
        font-size: 12px;
        padding: 6px 16px;
    }
    
    .ledger-faq-title {
        font-size: 22px;
    }
    
    .ledger-faq-tab {
        padding: 8px 12px;
        font-size: 12px;
        gap: 6px;
    }
    
    .ledger-faq-tab .tab-icon {
        font-size: 14px;
    }
    
    .ledger-faq-question {
        padding: 16px;
    }
    
    .ledger-faq-question .faq-icon {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
    
    .ledger-faq-question h3 {
        font-size: 14px;
    }
    
    .ledger-faq-answer > div {
        font-size: 13px;
        line-height: 1.8;
    }
    
    .ledger-faq-more {
        padding: 30px 20px;
        border-radius: var(--ledger-faq-radius-sm);
    }
    
    .ledger-faq-more h3 {
        font-size: 18px;
    }
    
    .ledger-faq-contact-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== 动画效果 ==================== */
@keyframes ledgerFaqFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ledger-faq-item {
    animation: ledgerFaqFadeIn 0.5s ease forwards;
    opacity: 0;
}

.ledger-faq-item:nth-child(1) { animation-delay: 0.05s; }
.ledger-faq-item:nth-child(2) { animation-delay: 0.1s; }
.ledger-faq-item:nth-child(3) { animation-delay: 0.15s; }
.ledger-faq-item:nth-child(4) { animation-delay: 0.2s; }
.ledger-faq-item:nth-child(5) { animation-delay: 0.25s; }
.ledger-faq-item:nth-child(6) { animation-delay: 0.3s; }
.ledger-faq-item:nth-child(7) { animation-delay: 0.35s; }
.ledger-faq-item:nth-child(8) { animation-delay: 0.4s; }
.ledger-faq-item:nth-child(9) { animation-delay: 0.45s; }
.ledger-faq-item:nth-child(10) { animation-delay: 0.5s; }
.ledger-faq-item:nth-child(11) { animation-delay: 0.55s; }
.ledger-faq-item:nth-child(12) { animation-delay: 0.6s; }
.ledger-faq-item:nth-child(13) { animation-delay: 0.65s; }
.ledger-faq-item:nth-child(14) { animation-delay: 0.7s; }
.ledger-faq-item:nth-child(15) { animation-delay: 0.75s; }

/* ==================== 打印样式 ==================== */
@media print {
    .ledger-faq-section {
        padding: 20px 0;
    }
    
    .ledger-faq-tabs {
        display: none;
    }
    
    .ledger-faq-item {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
        margin-bottom: 15px;
    }
    
    .ledger-faq-answer {
        max-height: none !important;
    }
    
    .ledger-faq-question .faq-arrow {
        display: none;
    }
    
    .ledger-faq-footer {
        display: none;
    }
}