/* ==========================================
   Ledger硬件钱包 - 完美版CSS
   ========================================== */

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

:root {
    --color-primary: #000;
    --color-secondary: #86868b;
    --color-accent: #0071e3;
    --color-purple: #8b5cf6;
    
    --bg-primary: #fff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #fbfbfd;
    
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    
    --border: rgba(0,0,0,0.1);
    
    --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --ease: cubic-bezier(0.23, 1, 0.32, 1);
    --duration: 300ms;
    --logo-height: 80px   (推荐：Logo变小)
--logo-height: 60px   (更小巧)
--logo-height: 80px   (适中)
--logo-height: 90px   (当前大小)
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ==========================================
   HEADER 导航栏
   ========================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-sm) 0;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    height: var(--logo-height);
    width: auto;
    transition: opacity 0.3s ease;
}

.nav-toggle {
    display: none;
    padding: 12px 28px;
    background: linear-gradient(135deg, #0071e3 0%, #28a2f9 100%);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(139,92,246,0.3);
    transition: all var(--duration) var(--ease);
}

/* .nav-toggle:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(139,92,246,0.4);
} */

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: background var(--duration);
}

.nav-link:hover {
    background: var(--bg-secondary);
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 100px var(--space-lg) var(--space-lg);
        box-shadow: -4px 0 20px rgba(0,0,0,0.1);
        transition: right 500ms var(--ease);
        overflow-y: auto;
    }
    
    .nav-menu.active { right: 0; }
    
    .nav-link {
        padding: var(--space-md);
        font-size: 18px;
    }
}

/* ==========================================
   HERO 轮播区 - 横幅Banner样式
   ========================================== */

.hero-section {
    padding-top: 0px;
    background: var(--bg-primary);
    width: 100%;
}

.hero-carousel {
    width: 100%;
    position: relative;
}

.carousel-track {
    position: relative;
    width: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 700ms var(--ease);
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    position: relative;
    transition: opacity 700ms var(--ease);
}

.slide-content {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f5f7 0%, #e8e8ea 100%);
    overflow: hidden;
}

.slide-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0) 50%);
    z-index: 1;
}

.slide-inner {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    width: 100%;
    padding: 0 var(--space-3xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.slide-text {
    text-align: left;
    color: var(--text-primary);
}

.slide-tag {
    display: inline-block;
    background: rgba(0,113,227,0.12);
    color: var(--color-accent);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.slide-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.slide-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.5;
}

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

.image-placeholder {
    width: 100%;
    max-width: 450px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
    border: 2px dashed rgba(0,0,0,0.1);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    padding: var(--space-lg);
    backdrop-filter: blur(10px);
}

.carousel-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-lg);
    align-items: center;
    z-index: 10;
}

.carousel-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.9);
    font-size: 22px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    backdrop-filter: blur(10px);
}

.carousel-btn:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

.carousel-dots {
    display: flex;
    gap: 8px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: none;
    padding: 0;
    transition: all var(--duration);
    cursor: pointer;
}

.carousel-dot:hover {
    background: rgba(255,255,255,0.8);
    transform: scale(1.15);
}

.carousel-dot.active {
    width: 32px;
    border-radius: 20px;
    background: white;
}

/* 平板适配 */
@media (max-width: 1024px) {
    .slide-inner {
        padding: 0 var(--space-xl);
        gap: var(--space-xl);
    }
    
    .slide-content {
        height: 450px;
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .hero-section {
        padding-top: 80px;
    }
    
    .slide-content {
        height: 600px;
    }
    
    .slide-inner {
        grid-template-columns: 1fr;
        padding: var(--space-xl) var(--space-lg);
        text-align: center;
    }
    
    .slide-text {
        text-align: center;
    }
    
    .slide-image {
        margin-top: var(--space-lg);
    }
    
    .image-placeholder {
        max-width: 350px;
    }
    
    .carousel-controls {
        bottom: 20px;
        gap: var(--space-md);
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}

.image-placeholder.small {
    max-width: 100%;
    aspect-ratio: 1;
}

.image-placeholder.large {
    max-width: 600px;
    aspect-ratio: 4/3;
    background: transparent;  /* 从渐变改为透明 */
    border: none;
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0;
}

.image-placeholder.large img {
    width: 100%;
    /* height: 100%; */
    object-fit: contain;
    border-radius: 32px;
}

.image-placeholder.xlarge {
    max-width: 100%;
    width: 100%;
    /* height: 100%; */
    font-size: 24px;
    color: white;
    background: linear-gradient(135deg, #4a90e2, #50c9c3);
    border: none;
}

.carousel-controls {
    display: flex;
    gap: var(--space-xl);
    justify-content: center;
    align-items: center;
    margin-top: var(--space-3xl);
}

.carousel-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: white;
    font-size: 28px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.carousel-btn:hover {
    background: var(--bg-secondary);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.carousel-dots {
    display: flex;
    gap: var(--space-sm);
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    border: none;
    padding: 0;
    transition: all var(--duration);
    cursor: pointer;
}

.carousel-dot:hover {
    background: var(--text-secondary);
    transform: scale(1.2);
}

.carousel-dot.active {
    width: 24px;
    border-radius: 20px;
    background: var(--text-primary);
}

@media (max-width: 768px) {
    .carousel-btn {
        width: 48px;
        height: 48px;
        font-size: 24px;
    }
}

/* ==========================================
   BRAND 品牌区
   ========================================== */

.brand-section {
    padding: var(--space-3xl) 0;
    text-align: center;
}

.brand-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.brand-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.brand-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
}

/* ==========================================
   PRODUCTS 产品网格
   ========================================== */

.products-section {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.product-filters {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.filter-btn {
    padding: var(--space-md) var(--space-2xl);
    border: none;
    background: var(--text-primary);
    color: white;
    border-radius: 28px;
    font-size: 16px;
    font-weight: 500;
    transition: all var(--duration);
}

.filter-btn:hover {
    background: #333;
    transform: translateY(-2px);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 1024px) {
    .products-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .products-grid { grid-template-columns: 1fr; }
}

.product-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--duration);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.product-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-accent);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.product-image {
    position: relative;
    padding: var(--space-xl);
    background: var(--bg-tertiary);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-logo {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: white;
}

.product-info {
    padding: var(--space-lg);
}

.product-distributor {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.product-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.product-price {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    font-size: 20px;
    font-weight: 600;
}

.price-old {
    color: var(--text-secondary);
    text-decoration: line-through;
    font-size: 16px;
    font-weight: 400;
}

.price-sale {
    color: var(--color-accent);
}

.price-current {
    color: var(--text-primary);
}

/* ==========================================
   PRODUCT DETAIL
   ========================================== */

.product-detail-section {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
}

.detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-3xl);
    align-items: center;
}

.detail-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.detail-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.detail-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.detail-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.detail-features li {
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
}

.detail-colors {
    display: flex;
    gap: var(--space-md);
}

.color-btn {
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid var(--border);
    background: white;
    border-radius: 20px;
    transition: all var(--duration);
}

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

@media (max-width: 768px) {
    .detail-wrapper { grid-template-columns: 1fr; }
}

/* ==========================================
   FEATURED 大图轮播 - 无导航卡片
   ========================================== */

.featured-section {
    padding: var(--space-3xl) 0;
}

.featured-carousel {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.featured-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.featured-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 700ms var(--ease);
}

.featured-slide.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

@media (max-width: 768px) {
    .featured-carousel { aspect-ratio: 4/5; }
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-title {
    font-size: 20px;
    margin-bottom: var(--space-md);
}

.footer-text {
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-lg);
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
}

.newsletter-form input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    border-radius: 24px;
    color: white;
    font-size: 14px;
}

.newsletter-form input::placeholder {
    color: rgba(255,255,255,0.5);
}

.newsletter-form button {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--color-accent);
    color: white;
    font-size: 20px;
    transition: all var(--duration);
}

.newsletter-form button:hover {
    background: #0077ed;
    transform: scale(1.05);
}

.contact-btns {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    transition: all var(--duration);
}

.contact-btn:hover {
    background: rgba(255,255,255,0.15);
    transform: translateX(4px);
}

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

.footer-bottom p {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    margin-bottom: var(--space-xs);
}

.footer-keywords {
    font-size: 12px;
}

@media (max-width: 768px) {
    .footer-content { grid-template-columns: 1fr; }
}

/* ==========================================
   BACK TO TOP
   ========================================== */

.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: white;
    font-size: 24px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--text-primary);
    color: white;
    transform: translateY(-4px);
}
.nav-brand {
    margin-left: -70px;  /* 往左移动10px */
}
/* ==========================================
   CK工匠 Ledger产品页面 CSS
   ========================================== */

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

:root {
    --color-primary: #000;
    --color-accent: #0071e3;
    --color-purple: #8b5cf6;
    
    --bg-primary: #fff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #fbfbfd;
    
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    
    --border: rgba(0,0,0,0.1);
    
    --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    --ease: cubic-bezier(0.23, 1, 0.32, 1);
    --duration: 300ms;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    padding-top: 80px;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ==========================================
   HEADER 导航栏
   ========================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-brand {
    margin-left: -10px;
}

.logo {
    height: var(--logo-height);
    width: auto;
    transition: opacity 0.3s;
}

.logo:hover {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--duration);
    font-size: 15px;
}

.nav-link:hover {
    background: var(--bg-secondary);
}

.nav-link.active {
    background: var(--bg-secondary);
    font-weight: 500;
}

/* 右侧按钮区 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* 语言选择器 */
.language-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-secondary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--duration);
}

.lang-btn:hover {
    background: #e8e8ea;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-xs);
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--duration);
}

.language-selector:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: 14px;
    transition: background var(--duration);
}

.lang-option:hover {
    background: var(--bg-secondary);
}

.lang-option.active {
    color: var(--color-accent);
    font-weight: 500;
}

/* 移动端按钮 */
.mobile-btn {
    display: none;
    padding: 10px 24px;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(139,92,246,0.3);
    transition: all var(--duration);
}

.mobile-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(139,92,246,0.4);
}

/* 移动端 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-btn {
        display: block;
    }
    
    .lang-text {
        display: none;
    }
}

/* ==========================================
   BREADCRUMB 面包屑
   ========================================== */

.breadcrumb-section {
    padding: var(--space-lg) 0;
    background: var(--bg-tertiary);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 14px;
    color: var(--text-secondary);
}

.breadcrumb a {
    transition: color var(--duration);
}

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

.breadcrumb .separator {
    color: var(--border);
}

.breadcrumb .current {
    color: var(--text-primary);
}

/* ==========================================
   PAGE HEADER 页面标题
   ========================================== */

.page-header {
    padding: var(--space-3xl) 0 var(--space-xl);
    text-align: center;
}

.page-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ==========================================
   FILTER 筛选标签
   ========================================== */

.filter-section {
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--border);
}

.filter-tabs {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.filter-tab {
    padding: var(--space-sm) var(--space-xl);
    background: var(--bg-secondary);
    border: none;
    border-radius: 24px;
    font-size: 15px;
    transition: all var(--duration);
}

.filter-tab:hover {
    background: #e8e8ea;
}

.filter-tab.active {
    background: var(--text-primary);
    color: white;
}

/* ==========================================
   PRODUCTS 产品列表
   ========================================== */

.products-section {
    padding: var(--space-3xl) 0;
}

.products-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.products-count {
    font-size: 14px;
    color: var(--text-secondary);
}

.products-count span {
    font-weight: 600;
    color: var(--text-primary);
}

.sort-dropdown {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.sort-dropdown label {
    font-size: 14px;
    color: var(--text-secondary);
}

.sort-select {
    padding: var(--space-xs) var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: white;
    cursor: pointer;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

.product-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--duration);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.product-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: 4px 12px;
    background: var(--color-accent);
    color: white;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.product-image {
    position: relative;
    padding: var(--space-xl);
    background: var(--bg-tertiary);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
}

.product-brand {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: 4px 8px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.product-info {
    padding: var(--space-lg);
}

.product-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.product-sku,
.product-distributor {
    font-size: 12px;
    color: var(--text-secondary);
}

.product-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-md);
    line-height: 1.4;
    min-height: 44px;
}

.product-price {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    margin-bottom: var(--space-md);
    font-size: 20px;
    font-weight: 600;
}

.price-old {
    color: var(--text-secondary);
    text-decoration: line-through;
    font-size: 16px;
    font-weight: 400;
}

.price-sale {
    color: var(--color-accent);
}

.price-current {
    color: var(--text-primary);
}

.product-btn {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--text-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--duration);
}

.product-btn:hover {
    background: #333;
    transform: translateY(-2px);
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: var(--space-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-title {
    font-size: 20px;
    margin-bottom: var(--space-md);
}

.footer-text {
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-lg);
    font-size: 14px;
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
}

.newsletter-form input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    border-radius: 24px;
    color: white;
    font-size: 14px;
}

.newsletter-form input::placeholder {
    color: rgba(255,255,255,0.5);
}

.newsletter-form button {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--color-accent);
    color: white;
    font-size: 20px;
    transition: all var(--duration);
}

.newsletter-form button:hover {
    background: #0077ed;
    transform: scale(1.05);
}

.contact-btns {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    transition: all var(--duration);
    font-size: 14px;
}

.contact-btn:hover {
    background: rgba(255,255,255,0.15);
    transform: translateX(4px);
}

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

.footer-bottom p {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    margin-bottom: var(--space-xs);
}

.footer-keywords {
    font-size: 12px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   BACK TO TOP
   ========================================== */

.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: white;
    font-size: 24px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--text-primary);
    color: white;
    transform: translateY(-4px);
}
.hero-section {
    padding-top: 0;  /* 完全去掉 */
    margin-top: 0;
    background: transparent;
}
body {
    padding-top: 100px;  /* 为固定导航栏留出空间 */
}
.navbar {
    height: 50px;  /* 从80px改为65px */
}
.logo {
    height: 85px;  /* 从64px改为52px */
}
body {
    padding-top: 65px;  /* 匹配导航栏高度 */
}
.nav-brand {
    margin-left: -40px;  /* 从-10px改为-20px */
}
/* ==========================================
   Ledger Nano S Plus 商品详情页 CSS
   完美适配移动端和PC端
   ========================================== */

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

:root {
    --primary: #0071e3;
    --success: #34C759;
    --purple: #8b5cf6;
    --dark: #1d1d1f;
    --gray: #6e6e73;
    --bg: #fff;
    --bg-light: #f5f5f7;
    --border: rgba(0,0,0,0.1);
    --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--dark); background: var(--bg); padding-top: 65px; margin: 0; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ==================== HEADER ==================== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.8); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); }
.navbar { display: flex; align-items: center; justify-content: space-between; height: 65px; }
.nav-brand { margin-left: -20px; }
.logo { height: var(--logo-height); transition: opacity 0.3s; }
.logo:hover { opacity: 0.8; }

.nav-menu { display: flex; gap: 24px; list-style: none; }
.nav-menu a { padding: 6px 12px; border-radius: 8px; transition: background 0.3s; font-size: 15px; }
.nav-menu a:hover { background: var(--bg-light); }

.nav-actions { display: flex; align-items: center; gap: 16px; }
.language-selector { position: relative; }
.lang-btn { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--bg-light); border-radius: 8px; font-size: 14px; transition: background 0.3s; }
.lang-btn:hover { background: #e8e8ea; }
.lang-dropdown { position: absolute; top: 100%; right: 0; margin-top: 8px; background: white; border: 1px solid var(--border); border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); min-width: 150px; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.3s; }
.language-selector:hover .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a { display: block; padding: 12px 16px; font-size: 14px; transition: background 0.3s; }
.lang-dropdown a:hover { background: var(--bg-light); }
.lang-dropdown a.active { color: var(--primary); font-weight: 500; }

.mobile-btn { display: none; padding: 10px 24px; background: linear-gradient(135deg, var(--purple), #7c3aed); border-radius: 12px; color: white; font-weight: 600; font-size: 14px; box-shadow: 0 4px 12px rgba(139,92,246,0.3); }

/* ==================== MOBILE NAV ==================== */
@media (max-width: 768px) {
    .nav-menu { display: none; }
    .mobile-btn { display: block; }
    .lang-btn span { display: none; }
}

/* ==================== BREADCRUMB ==================== */
.breadcrumb-section { padding: 16px 0; background: var(--bg-light); }
.breadcrumb { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--gray); flex-wrap: wrap; }
.breadcrumb a { transition: color 0.3s; }
.breadcrumb a:hover { color: var(--primary); }

/* ==================== PRODUCT SECTION ==================== */
.product-section { padding: 48px 0; }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; max-width: 100%; margin: 0 auto; align-items: start; }

/* 产品图片 */
.product-gallery { width: 100%; }
.main-image { position: relative; background: var(--bg-light); border-radius: 16px; padding: 32px; aspect-ratio: 1; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; width: 100%; }
.main-image img { max-width: 80%; max-height: 80%; object-fit: contain; }
.ledger-badge { position: absolute; top: 16px; right: 16px; padding: 4px 12px; background: white; border: 1px solid var(--border); border-radius: 4px; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; }

.thumbnail-list { display: flex; gap: 8px; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 8px; }
.thumbnail-list::-webkit-scrollbar { height: 4px; }
.thumbnail-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.thumbnail { flex: 0 0 80px; height: 80px; background: var(--bg-light); border: 2px solid transparent; border-radius: 12px; padding: 8px; transition: border 0.3s; }
.thumbnail:hover, .thumbnail.active { border-color: var(--primary); }
.thumbnail img { width: 100%; height: 100%; object-fit: contain; }

.distributor { margin-top: 24px; padding: 16px; background: var(--bg-light); border-radius: 12px; text-align: center; font-size: 12px; color: var(--gray); }
.logo-box { margin-top: 8px; display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; color: var(--dark); }
.ck { font-size: 18px; color: var(--purple); }
.text { font-size: 10px; line-height: 1.2; }

/* 产品信息 */
.product-info h1 { font-size: clamp(28px, 5vw, 40px); font-weight: 700; margin-bottom: 8px; letter-spacing: -0.02em; }
.subtitle { font-size: 18px; color: var(--gray); margin-bottom: 32px; }

.price-box { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.price { font-size: clamp(32px, 5vw, 40px); font-weight: 700; color: var(--primary); }
.badge { padding: 4px 12px; background: var(--success); color: white; border-radius: 12px; font-size: 12px; font-weight: 600; }

.sku { font-size: 14px; color: var(--gray); margin-bottom: 24px; }

.official-box { padding: 24px; background: linear-gradient(135deg, rgba(139,92,246,0.05), rgba(0,113,227,0.05)); border-left: 4px solid var(--purple); border-radius: 12px; margin-bottom: 32px; }
.official-box h3 { font-size: 16px; font-weight: 600; }

.description { margin-bottom: 32px; line-height: 1.8; }
.description strong { color: var(--primary); }

.features, .why-buy { margin-bottom: 32px; }
.features h4, .why-buy h4 { font-size: 18px; margin-bottom: 16px; }
.features ul, .why-buy ul { list-style: none; }
.features li, .why-buy li { padding: 8px 0 8px 32px; position: relative; line-height: 1.8; }
.features li::before { content: '✓'; position: absolute; left: 0; color: var(--success); font-weight: bold; }

.actions { display: flex; gap: 16px; margin-bottom: 32px; }
.btn-buy, .btn-cart { flex: 1; padding: 16px; border-radius: 12px; font-size: 16px; font-weight: 600; transition: all 0.3s; }
.btn-buy { background: var(--primary); color: white; }
.btn-buy:hover { background: #0077ed; transform: translateY(-2px); box-shadow: 0 8px 16px rgba(0,113,227,0.3); }
.btn-cart { background: var(--bg-light); color: var(--dark); }
.btn-cart:hover { background: #e8e8ea; }

.guarantee { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 32px; }
.guarantee .item { display: flex; align-items: center; gap: 8px; padding: 12px; background: var(--bg-light); border-radius: 8px; font-size: 14px; }
.guarantee .item span { color: var(--success); font-weight: bold; }

.share { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.share span:first-child { color: var(--gray); }
.share a { font-size: 20px; transition: transform 0.3s; }
.share a:hover { transform: scale(1.2); }

/* ==================== MOBILE PRODUCT ==================== */
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    
    .product-section { padding: 24px 0; }
    .product-grid { grid-template-columns: 1fr; gap: 32px; }
    
    .product-gallery { width: 100%; }
    .main-image { padding: 24px; margin-bottom: 12px; }
    .thumbnail { flex: 0 0 70px; height: 70px; }
    
    .product-info { width: 100%; }
    .product-info h1 { font-size: 28px; margin-bottom: 12px; }
    .subtitle { font-size: 16px; margin-bottom: 24px; }
    .price { font-size: 32px; }
    
    .official-box { padding: 16px; }
    .official-box h3 { font-size: 14px; }
    
    .features h4, .why-buy h4 { font-size: 16px; }
    .features li, .why-buy li { font-size: 15px; }
    
    .actions { flex-direction: column; gap: 12px; }
    .btn-buy, .btn-cart { padding: 16px 24px; }
    
    .guarantee { grid-template-columns: 1fr; }
    .guarantee .item { font-size: 13px; padding: 10px; }
}

/* ==================== DETAIL SECTION ==================== */
.detail-section { padding: 48px 0; background: var(--bg-light); }
.content-block { background: white; padding: 32px; margin-bottom: 32px; border-radius: 16px; }
.content-block h2 { font-size: clamp(24px, 4vw, 32px); margin-bottom: 24px; }
.content-block h3 { font-size: 20px; margin-bottom: 16px; margin-top: 32px; }
.content-block h4 { font-size: 18px; margin-bottom: 12px; }
.content-block p { line-height: 1.8; margin-bottom: 16px; }
.content-block strong { color: var(--primary); }

.feature-detail, .security-item, .tutorial-step, .faq-item { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.feature-detail:last-child, .security-item:last-child, .tutorial-step:last-child, .faq-item:last-child { border-bottom: none; }

.comparison { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 24px 0; }
.compare-item { padding: 24px; background: var(--bg-light); border-radius: 12px; }
.compare-item h4 { font-size: 18px; margin-bottom: 16px; }
.compare-item p { margin-bottom: 8px; }
.note { font-size: 14px; color: var(--gray); padding: 16px; background: rgba(0,113,227,0.05); border-radius: 8px; }

.reasons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.reason { text-align: center; padding: 24px; background: var(--bg-light); border-radius: 16px; }
.reason .icon { width: 60px; height: 60px; margin: 0 auto 16px; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; font-weight: bold; }
.reason h4 { font-size: 16px; margin-bottom: 8px; }
.reason p { font-size: 14px; color: var(--gray); }

/* ==================== MOBILE DETAIL ==================== */
@media (max-width: 768px) {
    .detail-section { padding: 24px 0; }
    .content-block { padding: 24px; margin-bottom: 24px; }
    .content-block h2 { font-size: 24px; }
    .content-block h3 { font-size: 18px; }
    .content-block h4 { font-size: 16px; }
    .content-block p { font-size: 15px; }
    
    .comparison { grid-template-columns: 1fr; gap: 16px; }
    .compare-item { padding: 16px; }
    
    .reasons { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .reason { padding: 16px; }
    .reason .icon { width: 50px; height: 50px; font-size: 24px; margin-bottom: 12px; }
    .reason h4 { font-size: 15px; }
    .reason p { font-size: 13px; }
}

@media (max-width: 480px) {
    .reasons { grid-template-columns: 1fr; }
}

/* ==================== FOOTER ==================== */
.footer { background: #2c2c2e; color: white; padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; margin-bottom: 32px; }
.footer-col h3 { font-size: 20px; margin-bottom: 16px; }
.footer-col p { color: rgba(255,255,255,0.7); margin-bottom: 24px; font-size: 14px; }

.newsletter { display: flex; gap: 8px; }
.newsletter input { flex: 1; padding: 16px 24px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); border-radius: 24px; color: white; font-size: 14px; }
.newsletter input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter button { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: white; font-size: 20px; transition: all 0.3s; }
.newsletter button:hover { background: #0077ed; transform: scale(1.05); }

.contacts { display: flex; flex-direction: column; gap: 8px; }
.contacts a { display: flex; align-items: center; gap: 16px; padding: 16px 24px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: 12px; transition: all 0.3s; font-size: 14px; }
.contacts a:hover { background: rgba(255,255,255,0.15); transform: translateX(4px); }

.footer-bottom { padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.6); font-size: 14px; margin-bottom: 8px; }
.keywords { font-size: 12px; }

@media (max-width: 768px) {
    .footer { padding: 32px 0 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ==================== BACK TOP ==================== */
.back-top { position: fixed; bottom: 32px; right: 32px; width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--border); background: white; font-size: 24px; box-shadow: 0 4px 16px rgba(0,0,0,0.1); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 999; }
.back-top.visible { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--dark); color: white; transform: translateY(-4px); }
.main-image img { 
    transition: opacity 0.3s ease; 
}
/* ==========================================
   CK工匠 - 关于我们页面 CSS
   完美适配移动端和PC端
   ========================================== */

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

:root {
    --primary: #0071e3;
    --success: #34C759;
    --purple: #8b5cf6;
    --orange: #FF9500;
    --gold: #FFD700;
    --dark: #1d1d1f;
    --gray: #6e6e73;
    --bg: #fff;
    --bg-light: #f5f5f7;
    --bg-dark: #2c2c2e;
    --border: rgba(0,0,0,0.1);
    --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--dark); background: var(--bg); padding-top: 65px; margin: 0; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ==================== HEADER ==================== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.8); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); }
.navbar { display: flex; align-items: center; justify-content: space-between; height: 65px; }
.nav-brand { margin-left: -20px; }
.logo { height: 90px; transition: opacity 0.3s; }
.logo:hover { opacity: 0.8; }

.nav-menu { display: flex; gap: 24px; list-style: none; }
.nav-menu a { padding: 6px 12px; border-radius: 8px; transition: background 0.3s; font-size: 15px; }
.nav-menu a:hover, .nav-menu a.active { background: var(--bg-light); }

.nav-actions { display: flex; align-items: center; gap: 16px; }
.language-selector { position: relative; }
.lang-btn { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--bg-light); border-radius: 8px; font-size: 14px; transition: background 0.3s; }
.lang-btn:hover { background: #e8e8ea; }
.lang-dropdown { position: absolute; top: 100%; right: 0; margin-top: 8px; background: white; border: 1px solid var(--border); border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); min-width: 150px; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.3s; }
.language-selector:hover .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a { display: block; padding: 12px 16px; font-size: 14px; transition: background 0.3s; }
.lang-dropdown a:hover { background: var(--bg-light); }
.lang-dropdown a.active { color: var(--primary); font-weight: 500; }

.mobile-btn { display: none; padding: 10px 24px; background: linear-gradient(135deg, var(--purple), #0071e3); border-radius: 12px; color: white; font-weight: 600; font-size: 14px; box-shadow: 0 4px 12px #28a2f9; }

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .mobile-btn { display: block; }
    .lang-btn span { display: none; }
}

/* ==================== BREADCRUMB ==================== */
.breadcrumb-section { padding: 16px 0; background: var(--bg-light); }
.breadcrumb { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--gray); flex-wrap: wrap; }
.breadcrumb a { transition: color 0.3s; }
.breadcrumb a:hover { color: var(--primary); }

/* ==================== HERO ABOUT ==================== */
.hero-about { padding: 80px 0 60px; text-align: center; background: linear-gradient(135deg, var(--bg-light), #fff); }
.hero-about h1 { font-size: clamp(36px, 6vw, 56px); font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.hero-subtitle { font-size: clamp(20px, 3vw, 28px); color: var(--primary); margin-bottom: 12px; font-weight: 600; }
.hero-desc { font-size: 18px; color: var(--gray); }

/* ==================== SECTIONS ==================== */
.intro-section { padding: 80px 0; }
.content-box { background: white; padding: 48px; margin-bottom: 48px; border-radius: 20px; box-shadow: 0 2px 16px rgba(0,0,0,0.05); }
.content-box h2 { font-size: clamp(28px, 4vw, 36px); margin-bottom: 24px; color: var(--dark); }
.content-box p { line-height: 1.8; margin-bottom: 16px; font-size: 17px; }
.content-box strong { color: var(--primary); font-weight: 600; }

/* ==================== REASONS GRID ==================== */
.reasons-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 32px; }
.reason-card { padding: 32px; background: var(--bg-light); border-radius: 16px; text-align: center; transition: all 0.3s; }
.reason-card:hover { transform: translateY(-8px); box-shadow: 0 12px 32px rgba(0,0,0,0.1); }
.reason-card .icon { width: 64px; height: 64px; margin: 0 auto 20px; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; font-weight: bold; }
.reason-card h3 { font-size: 20px; margin-bottom: 12px; }
.reason-card p { font-size: 15px; color: var(--gray); line-height: 1.6; }

@media (max-width: 968px) {
    .reasons-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 640px) {
    .reasons-grid { grid-template-columns: 1fr; }
    .content-box { padding: 32px 24px; }
}

/* ==================== PRODUCTS SHOWCASE ==================== */
.products-showcase { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 32px; }
.product-card { padding: 32px; background: var(--bg-light); border-radius: 16px; position: relative; transition: all 0.3s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.product-badge { position: absolute; top: 16px; right: 16px; padding: 6px 16px; border-radius: 20px; font-size: 12px; font-weight: 600; color: white; }
.product-badge.entry { background: var(--success); }
.product-badge.hot { background: #FF3B30; }
.product-badge.new { background: var(--orange); }
.product-badge.premium { background: linear-gradient(135deg, var(--gold), #FFA500); color: #000; }
.product-card h3 { font-size: 24px; margin-bottom: 12px; }
.product-price { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 20px; }
.product-features { list-style: none; margin-bottom: 20px; }
.product-features li { padding: 8px 0 8px 28px; position: relative; font-size: 15px; }
.product-features li::before { content: '✓'; position: absolute; left: 0; color: var(--success); font-weight: bold; }
.product-desc { font-size: 14px; line-height: 1.6; color: var(--gray); }

@media (max-width: 768px) {
    .products-showcase { grid-template-columns: 1fr; gap: 24px; }
    .product-card { padding: 24px; }
}

/* ==================== WHY LEDGER ==================== */
.why-ledger { margin-top: 32px; }
.why-item { padding: 24px; background: var(--bg-light); border-radius: 12px; margin-bottom: 20px; }
.why-item:last-child { margin-bottom: 0; }
.why-item h3 { font-size: 20px; margin-bottom: 12px; }
.why-item p { line-height: 1.8; font-size: 16px; }

/* ==================== PROMISE LIST ==================== */
.promise-list { margin-top: 32px; }
.promise-item { padding: 24px; background: var(--bg-light); border-radius: 12px; margin-bottom: 20px; }
.promise-item:last-child { margin-bottom: 0; }
.promise-item h3 { font-size: 18px; margin-bottom: 12px; color: var(--success); }
.promise-item p { line-height: 1.8; font-size: 15px; }

/* ==================== FAQ ==================== */
.faq-list { margin-top: 32px; }
.faq-item { padding: 24px; background: var(--bg-light); border-radius: 12px; margin-bottom: 16px; }
.faq-item:last-child { margin-bottom: 0; }
.faq-item h3 { font-size: 18px; margin-bottom: 12px; color: var(--dark); }
.faq-item p { line-height: 1.8; font-size: 15px; }
.faq-item strong { color: var(--primary); }

/* ==================== CONTACT INFO ==================== */
.contact-info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 32px; }
.contact-card { padding: 32px; background: var(--bg-light); border-radius: 16px; text-align: center; }
.contact-icon { font-size: 48px; margin-bottom: 16px; }
.contact-card h3 { font-size: 20px; margin-bottom: 12px; }
.contact-card p { font-size: 16px; margin-bottom: 8px; }
.contact-note { font-size: 14px; color: var(--gray); }

@media (max-width: 768px) {
    .contact-info { grid-template-columns: 1fr; gap: 20px; }
    .contact-card { padding: 24px; }
}

/* ==================== CTA SECTION ==================== */
.cta-section { padding: 80px 0; background: linear-gradient(135deg, var(--primary), #0077ed); color: white; text-align: center; }
.cta-section h2 { font-size: clamp(28px, 5vw, 40px); margin-bottom: 16px; }
.cta-section p { font-size: 18px; margin-bottom: 32px; opacity: 0.9; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary, .btn-secondary { padding: 16px 48px; border-radius: 12px; font-size: 18px; font-weight: 600; transition: all 0.3s; display: inline-block; }
.btn-primary { background: white; color: var(--primary); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,255,255,0.3); }
.btn-secondary { background: transparent; color: white; border: 2px solid white; }
.btn-secondary:hover { background: rgba(255,255,255,0.1); }

@media (max-width: 640px) {
    .cta-buttons { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; max-width: 300px; }
}

/* ==================== FOOTER ==================== */
.footer { background: var(--bg-dark); color: white; padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; margin-bottom: 32px; }
.footer-col h3 { font-size: 20px; margin-bottom: 16px; }
.footer-col p { color: rgba(255,255,255,0.7); margin-bottom: 24px; font-size: 14px; }

.newsletter { display: flex; gap: 8px; }
.newsletter input { flex: 1; padding: 16px 24px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); border-radius: 24px; color: white; font-size: 14px; }
.newsletter input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter button { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: white; font-size: 20px; transition: all 0.3s; }
.newsletter button:hover { background: #0077ed; transform: scale(1.05); }

.contacts { display: flex; flex-direction: column; gap: 8px; }
.contacts a { display: flex; align-items: center; gap: 16px; padding: 16px 24px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: 12px; transition: all 0.3s; font-size: 14px; }
.contacts a:hover { background: rgba(255,255,255,0.15); transform: translateX(4px); }

.footer-bottom { padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.6); font-size: 14px; margin-bottom: 12px; line-height: 1.8; }
.keywords, .seo-text { font-size: 12px; }

@media (max-width: 768px) {
    .footer { padding: 32px 0 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ==================== BACK TOP ==================== */
.back-top { position: fixed; bottom: 32px; right: 32px; width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--border); background: white; font-size: 24px; box-shadow: 0 4px 16px rgba(0,0,0,0.1); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 999; }
.back-top.visible { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--dark); color: white; transform: translateY(-4px); }
.product-card { 
    padding: 0;  /* 移除内边距 */
    background: white;  /* 白色背景 */
    border-radius: 16px;
    overflow: hidden;  /* 裁剪溢出内容 */
}
.product-badge { 
    padding: 12px 24px;  /* 上下12px，左右24px */
    font-size: 14px;
    font-weight: 600;
    color: white;
    text-align: center;  /* 文字居中 */
    /* 不再是绝对定位 */
}
.product-card h3 { 
    padding: 0 32px; 
    margin-top: 24px;  /* 顶部间距 */
}
.product-price { padding: 0 32px; }
.product-features { padding: 0 32px; }
.product-desc { padding: 0 32px 32px 32px; }  /* 底部也有padding */
body { padding-top: 100px; }
.navbar { height: 75px; }
/* ==========================================
   Ledger Wallet 下载页面 CSS
   完美适配移动端和PC端
   ========================================== */

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

:root {
    --primary: #0071e3;
    --success: #34C759;
    --purple: #8b5cf6;
    --orange: #FF9500;
    --dark: #1d1d1f;
    --gray: #6e6e73;
    --light-gray: #f5f5f7;
    --bg: #fff;
    --border: rgba(0,0,0,0.1);
    --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    
    --windows-blue: #0078D4;
    --apple-gray: #333;
    --linux-orange: #E95420;
    --android-green: #3DDC84;
    --ios-blue: #147EFB;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--dark); background: var(--bg); margin: 0; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ==================== HEADER ==================== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.8); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); }
.navbar { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.nav-brand { margin-left: -10px; }
.logo { height: 90px; transition: opacity 0.3s; }
.logo:hover { opacity: 0.8; }

.nav-menu { display: flex; gap: 24px; list-style: none; }
.nav-menu a { padding: 6px 12px; border-radius: 8px; transition: background 0.3s; font-size: 15px; }
.nav-menu a:hover, .nav-menu a.active { background: var(--light-gray); color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 16px; }
.language-selector { position: relative; }
.lang-btn { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--light-gray); border-radius: 8px; font-size: 14px; transition: background 0.3s; }
.lang-btn:hover { background: #e8e8ea; }
.lang-dropdown { position: absolute; top: 100%; right: 0; margin-top: 8px; background: white; border: 1px solid var(--border); border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); min-width: 150px; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.3s; }
.language-selector:hover .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a { display: block; padding: 12px 16px; font-size: 14px; transition: background 0.3s; }
.lang-dropdown a:hover { background: var(--light-gray); }
.lang-dropdown a.active { color: var(--primary); font-weight: 500; }

.mobile-btn { display: none; padding: 10px 24px; background: linear-gradient(135deg, var(--primary), #9945ff); border-radius: 12px; color: white; font-weight: 600; font-size: 14px; box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3); transition: all 0.3s; }
.mobile-btn:hover { background: linear-gradient(135deg, #9945ff, #9945ff); transform: translateY(-2px); }

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .mobile-btn { display: block; }
    .lang-btn span { display: none; }
}

/* ==================== HERO ==================== */
.hero-download { padding: 140px 0 80px; background: linear-gradient(180deg, var(--light-gray) 0%, #fff 100%); text-align: center; margin-top: 0; }
.hero-content { max-width: 800px; margin: 0 auto; }
.hero-download h1 { font-size: clamp(40px, 6vw, 64px); font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.hero-subtitle { font-size: clamp(20px, 3vw, 28px); color: var(--gray); margin-bottom: 24px; font-weight: 500; }
.hero-description { font-size: 17px; line-height: 1.8; color: var(--gray); max-width: 700px; margin: 0 auto; }
.hero-description strong { color: var(--primary); font-weight: 600; }

/* ==================== DOWNLOAD SECTION ==================== */
.download-section { padding: 80px 0; }

.download-category { margin-bottom: 80px; }
.download-category h2 { font-size: 32px; margin-bottom: 40px; display: flex; align-items: center; gap: 16px; color: var(--dark); }
.category-icon { color: var(--primary); }

/* ==================== DOWNLOAD GRID ==================== */
.download-grid { display: grid; gap: 32px; margin-bottom: 48px; }
.download-grid.desktop { grid-template-columns: repeat(3, 1fr); }
.download-grid.mobile { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 968px) {
    .download-grid.desktop { grid-template-columns: 1fr; }
    .download-grid.mobile { grid-template-columns: 1fr; }
}

/* ==================== DOWNLOAD CARD ==================== */
.download-card { background: white; border: 2px solid var(--border); border-radius: 20px; padding: 40px 32px; transition: all 0.3s; position: relative; overflow: hidden; }
.download-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); border-color: var(--primary); }
.download-card.featured { border-color: var(--primary); box-shadow: 0 8px 24px rgba(0,113,227,0.15); }

.download-icon { width: 80px; height: 80px; margin: 0 auto 24px; display: flex; align-items: center; justify-content: center; border-radius: 20px; }
.download-icon.windows { background: linear-gradient(135deg, #0078D4, #00BCF2); color: white; }
.download-icon.macos { background: linear-gradient(135deg, #333, #555); color: white; }
.download-icon.linux { background: linear-gradient(135deg, #E95420, #F47421); color: white; }
.download-icon.ios { background: linear-gradient(135deg, #147EFB, #4A9FFF); color: white; }
.download-icon.android { background: linear-gradient(135deg, #3DDC84, #32D74B); color: white; }

.download-card h3 { font-size: 24px; margin-bottom: 8px; text-align: center; }
.download-card .version { font-size: 14px; color: var(--gray); text-align: center; margin-bottom: 16px; }
.download-card .description { font-size: 15px; line-height: 1.6; color: var(--gray); text-align: center; margin-bottom: 24px; min-height: 72px; }

/* ==================== DOWNLOAD BUTTON ==================== */
.btn-download { display: flex; align-items: center; justify-content: center; gap: 12px; width: 100%; padding: 16px 32px; background: var(--dark); color: white; border-radius: 12px; font-size: 16px; font-weight: 600; transition: all 0.3s; margin-bottom: 16px; }
.btn-download:hover { background: #000; transform: scale(1.02); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }
.btn-download svg { flex-shrink: 0; }

.btn-download.apple { background: linear-gradient(135deg, var(--apple-gray), #000); }
.btn-download.apple:hover { background: linear-gradient(135deg, #000, #000); }

.btn-download.android { background: linear-gradient(135deg, var(--android-green), #32D74B); }
.btn-download.android:hover { background: linear-gradient(135deg, #32D74B, #30C643); }

.file-info { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--gray); padding-top: 16px; border-top: 1px solid var(--border); }
.file-info span { flex: 1; text-align: center; }

.compatibility-note { display: flex; align-items: center; gap: 8px; margin-top: 16px; padding: 12px; background: rgba(0,113,227,0.05); border-radius: 8px; font-size: 13px; color: var(--primary); }
.compatibility-note svg { flex-shrink: 0; }

/* ==================== REQUIREMENTS ==================== */
.requirements-section { margin-bottom: 80px; }
.requirements-section h2 { font-size: 32px; margin-bottom: 32px; text-align: center; }
.requirements-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.requirement-card { background: var(--light-gray); border-radius: 16px; padding: 32px; }
.requirement-card h4 { font-size: 20px; margin-bottom: 16px; }
.requirement-card ul { list-style: none; }
.requirement-card li { padding: 8px 0 8px 28px; position: relative; font-size: 15px; line-height: 1.6; }
.requirement-card li::before { content: '✓'; position: absolute; left: 0; color: var(--success); font-weight: bold; }

@media (max-width: 768px) {
    .requirements-grid { grid-template-columns: 1fr; }
}

/* ==================== FEATURES ==================== */
.features-section { margin-bottom: 80px; background: var(--light-gray); padding: 80px 0; margin-left: -50vw; margin-right: -50vw; padding-left: 50vw; padding-right: 50vw; }
.features-section h2 { font-size: 32px; margin-bottom: 48px; text-align: center; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.feature-item { text-align: center; padding: 32px; background: white; border-radius: 16px; transition: all 0.3s; }
.feature-item:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.feature-icon { font-size: 48px; margin-bottom: 16px; }
.feature-item h3 { font-size: 20px; margin-bottom: 12px; }
.feature-item p { font-size: 15px; line-height: 1.6; color: var(--gray); }
.feature-item strong { color: var(--primary); }

@media (max-width: 968px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .features-grid { grid-template-columns: 1fr; }
}

/* ==================== GUIDE ==================== */
.guide-section { margin-bottom: 80px; }
.guide-section h2 { font-size: 32px; margin-bottom: 48px; text-align: center; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card { text-align: center; padding: 32px 24px; background: white; border: 2px solid var(--border); border-radius: 16px; transition: all 0.3s; }
.step-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.step-number { width: 60px; height: 60px; margin: 0 auto 20px; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 28px; font-weight: 700; }
.step-card h3 { font-size: 18px; margin-bottom: 12px; }
.step-card p { font-size: 14px; line-height: 1.6; color: var(--gray); }
.step-card strong { color: var(--primary); }

@media (max-width: 968px) {
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .steps-grid { grid-template-columns: 1fr; }
}

/* ==================== FAQ ==================== */
.faq-section { margin-bottom: 80px; }
.faq-section h2 { font-size: 32px; margin-bottom: 48px; text-align: center; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.faq-item { padding: 32px; background: var(--light-gray); border-radius: 16px; }
.faq-item h4 { font-size: 18px; margin-bottom: 12px; color: var(--dark); }
.faq-item p { font-size: 15px; line-height: 1.8; color: var(--gray); }
.faq-item strong { color: var(--primary); }

@media (max-width: 768px) {
    .faq-grid { grid-template-columns: 1fr; }
}

/* ==================== FOOTER ==================== */
.footer { background: #2c2c2e; color: white; padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; margin-bottom: 32px; }
.footer-col h3 { font-size: 20px; margin-bottom: 16px; }
.footer-col p { color: rgba(255,255,255,0.7); margin-bottom: 24px; font-size: 14px; }

.newsletter { display: flex; gap: 8px; }
.newsletter input { flex: 1; padding: 16px 24px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); border-radius: 24px; color: white; font-size: 14px; }
.newsletter input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter button { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: white; font-size: 20px; transition: all 0.3s; }
.newsletter button:hover { background: #0077ed; transform: scale(1.05); }

.contacts { display: flex; flex-direction: column; gap: 8px; }
.contacts a { display: flex; align-items: center; gap: 16px; padding: 16px 24px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: 12px; transition: all 0.3s; font-size: 14px; }
.contacts a:hover { background: rgba(255,255,255,0.15); transform: translateX(4px); }

.footer-bottom { padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.6); font-size: 14px; margin-bottom: 12px; line-height: 1.8; }
.keywords { font-size: 12px; }

@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ==================== BACK TOP ==================== */
.back-top { position: fixed; bottom: 32px; right: 32px; width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--border); background: white; font-size: 24px; box-shadow: 0 4px 16px rgba(0,0,0,0.1); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 999; }
.back-top.visible { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--dark); color: white; transform: translateY(-4px); }

@media (max-width: 640px) {
    .hero-download { padding: 100px 0 60px; }
    .download-section { padding: 60px 0; }
    .download-category { margin-bottom: 60px; }
    .features-section, .guide-section, .faq-section { margin-bottom: 60px; }
}
.contact-btns {
    text-align: center;
}

.contact-btn {
    display: inline-block;
    margin: 5px;
}
.contacts a {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
}
/* 产品网格容器 - 假设是包含所有产品卡片的父元素 */
.products-container,
.products-grid,
.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

/* 产品卡片 - 根据您的实际 class 名称调整 */
.product-card,
.product-item {
    display: flex !important;
    flex-direction: column !important;
    height: 100% !important;
    min-height: 550px !important;
    box-sizing: border-box !important;
}

/* 产品图片区域 */
.product-card img,
.product-item img {
    width: 100% !important;
    height: 200px !important;
    object-fit: contain !important;
}

/* 产品标题 */
.product-card h3,
.product-card .product-title,
.product-item h3,
.product-item .product-title {
    min-height: 80px !important;
    max-height: 80px !important;
    overflow: hidden !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 3 !important;
    -webkit-box-orient: vertical !important;
}

/* 价格区域推到底部 */
.product-card .price,
.product-card .product-price,
.product-item .price,
.product-item .product-price {
    margin-top: auto !important;
    padding-top: 15px !important;
}

/* 如果价格的父元素需要自动推到底部 */
.product-card > *:last-child,
.product-item > *:last-child {
    margin-top: auto !important;
}
/* ==========================================
   新增功能样式 - 不影响原有代码
   ========================================== */

/* 关于我们预览区域 */
.about-preview-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.about-preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-preview-content {
    max-width: 540px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0,113,227,0.1);
    color: #0071e3;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
    margin-bottom: 32px;
}

.feature-list li {
    padding: 12px 0;
    font-size: 16px;
}

.about-preview-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.about-preview-image img {
    width: 100%;
    height: auto;
}

/* 对比按钮区域 */
.compare-cta {
    text-align: center;
    padding: 40px 0;
}

.btn-compare {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: white;
    border: 2px solid #0071e3;
    border-radius: 12px;
    color: #0071e3;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-compare:hover {
    background: #0071e3;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,113,227,0.3);
}

/* 型号对比区域 */
.compare-section {
    padding: 80px 0;
    background: #fbfbfd;
}

.section-title-center {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle-center {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 48px;
}

.compare-table-wrapper {
    overflow-x: auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}

.compare-table th,
.compare-table td {
    padding: 20px 16px;
    text-align: center;
    border-bottom: 1px solid #e5e5e7;
}

.compare-table .feature-col {
    text-align: left;
    font-weight: 600;
    width: 180px;
    background: white;
    position: sticky;
    left: 0;
    z-index: 5;
}

.compare-table .product-header-small {
    padding: 16px 8px;
}

.compare-table .product-header-small img {
    width: 80px;
    height: 80px;
    margin: 0 auto 12px;
    object-fit: contain;
}

.compare-table .product-header-small h4 {
    font-size: 16px;
    margin-bottom: 8px;
    font-weight: 600;
}

.compare-table .product-header-small .price {
    font-size: 18px;
    font-weight: 700;
    color: #0071e3;
}

.compare-table .recommended {
    background: rgba(0,113,227,0.04);
    position: relative;
}

.compare-table .recommend-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 12px;
    background: linear-gradient(135deg, #0071e3 0%, #28a2f9 100%);
    color: white;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
}

.compare-table .category-row {
    background: #f5f5f7;
}

.compare-table .category-title {
    text-align: left;
    font-weight: 700;
    font-size: 15px;
    padding: 16px 20px;
}

.compare-table .feature-name {
    font-weight: 600;
    font-size: 14px;
}

.compare-table .highlight {
    background: rgba(0,113,227,0.04);
}

.compare-table .check {
    color: #34c759;
    font-size: 18px;
    font-weight: 700;
}

.compare-table .cross {
    color: #ff3b30;
    font-size: 18px;
    font-weight: 700;
}

.compare-table tbody td {
    font-size: 14px;
    line-height: 1.6;
    color: #1d1d1f;
}

/* 响应式 - 平板 */
@media (max-width: 968px) {
    .about-preview-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .section-title-center {
        font-size: 32px;
    }
    
    .compare-table th,
    .compare-table td {
        padding: 12px 8px;
        font-size: 13px;
    }
    
    .compare-table .product-header-small img {
        width: 60px;
        height: 60px;
    }
}

/* 响应式 - 手机 */
@media (max-width: 640px) {
    .about-preview-section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-desc {
        font-size: 16px;
    }
    
    .compare-section {
        padding: 60px 0;
    }
    
    .section-title-center {
        font-size: 28px;
    }
    
    .section-subtitle-center {
        font-size: 16px;
    }
    
    .btn-compare {
        font-size: 14px;
        padding: 14px 24px;
    }
}