/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --card-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #475569;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

/* 语言切换器 */
.language-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 8px;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 8px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.lang-btn.active {
    background: var(--primary-color);
    color: white;
}

.lang-btn:hover:not(.active) {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* 头部区域 */
.hero {
    text-align: center;
    padding: 80px 0 60px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    z-index: -1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 章节标题 */
.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 40px;
    text-align: center;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 商品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 80px;
}

.product-card {
    background: var(--card-color);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 16px;
}

.product-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
}

.product-original-price {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: 8px;
}

.product-stats {
    display: flex;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.btn-buy {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-buy:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 分类网格 */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 80px;
}

.category-card {
    background: var(--card-color);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--secondary-color);
}

.category-card:hover::before {
    opacity: 0.1;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
}

.category-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.category-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 底部导航 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-item.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-icon {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.nav-text {
    font-size: 0.75rem;
    font-weight: 500;
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--surface-color);
    border-radius: 16px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-heavy);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 24px 0;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: 0 24px 24px;
}

.product-info {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    background: var(--card-color);
    border-radius: 12px;
}

.product-info img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
}

.product-details h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.product-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
    line-height: 1.5;
}

.price-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--success-color);
}

.original-price {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

/* 表单样式 */
.purchase-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-color);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* 支付说明 */
.payment-instructions {
    background: var(--card-color);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.payment-instructions h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.payment-instructions ol {
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 20px;
}

.payment-instructions li {
    margin-bottom: 8px;
}

.btn-purchase {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-purchase:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 3000;
}

.loading.active {
    display: flex;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 16px;
    }
    
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .language-switcher {
        top: 16px;
        right: 16px;
    }
    
    .modal {
        margin: 20px;
        max-height: calc(100vh - 40px);
    }
    
    .product-info {
        flex-direction: column;
        text-align: center;
    }
    
    .product-info img {
        width: 120px;
        height: 120px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .product-card {
        padding: 16px;
    }
    
    .category-card {
        padding: 24px 16px;
    }
    
    .bottom-nav {
        padding: 8px 0;
    }
    
    .nav-text {
        font-size: 0.7rem;
    }
}

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

.product-card,
.category-card {
    animation: fadeInUp 0.6s 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; }
.product-card:nth-child(5) { animation-delay: 0.5s; }
.product-card:nth-child(6) { animation-delay: 0.6s; }

.category-card:nth-child(1) { animation-delay: 0.2s; }
.category-card:nth-child(2) { animation-delay: 0.3s; }
.category-card:nth-child(3) { animation-delay: 0.4s; }
.category-card:nth-child(4) { animation-delay: 0.5s; }
.category-card:nth-child(5) { animation-delay: 0.6s; }
.category-card:nth-child(6) { animation-delay: 0.7s; }

/* 商品列表页面样式 */
.page-header {
    text-align: center;
    padding: 60px 0 40px;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.category-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--card-color);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.filter-btn:hover:not(.active) {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

.load-more-container {
    text-align: center;
    margin-top: 40px;
}

.btn-load-more {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-load-more:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.no-products {
    text-align: center;
    padding: 40px 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 支付流程页面样式 */
.payment-guide-section {
    margin-bottom: 80px;
}

.guide-card {
    background: var(--card-color);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border-color);
}

.guide-step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 32px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.guide-step:last-child {
    margin-bottom: 0;
}

.guide-step.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

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

.notice-section {
    margin-bottom: 80px;
}

.notice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.notice-card {
    background: var(--card-color);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color);
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.notice-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.notice-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.notice-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.notice-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.faq-section {
    margin-bottom: 80px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--card-color);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.faq-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.faq-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

.support-section {
    margin-bottom: 80px;
}

.support-card {
    background: var(--card-color);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.support-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.support-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.support-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.support-icon {
    font-size: 1.2rem;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .guide-card {
        padding: 24px;
    }
    
    .guide-step {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .step-number {
        align-self: center;
    }
    
    .notice-grid {
        grid-template-columns: 1fr;
    }
    
    .support-info {
        align-items: flex-start;
    }
    
    .category-filter {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

/* 错误消息和空状态 */
.error-message {
    text-align: center;
    padding: 40px 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 商品详情页面样式 */
.breadcrumb-container {
    padding: 20px 0;
    margin-top: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.breadcrumb .current {
    color: var(--text-primary);
    font-weight: 500;
}

.product-detail-section {
    padding: 40px 0 80px;
}

.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    gap: 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.error-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.error-container .error-message {
    max-width: 500px;
}

.error-container .error-message i {
    font-size: 3rem;
    color: #f59e0b;
    margin-bottom: 20px;
    display: block;
}

.error-container .error-message h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.product-detail-content {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.product-detail-content.show {
    opacity: 1;
    transform: translateY(0);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.product-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.main-image {
    aspect-ratio: 4/3;
    border-radius: 16px;
    overflow: hidden;
    background: var(--card-color);
    border: 1px solid var(--border-color);
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.image-thumbnails {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding: 4px;
}

.thumbnail {
    width: 80px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color 0.3s ease;
}

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

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.product-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 24px;
}

.product-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.2;
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.category-tag {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.view-count {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.view-count i {
    font-size: 0.8rem;
}

.product-price {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.current-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.currency, .unit {
    font-size: 1.2rem;
    font-weight: 500;
}

.product-description h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.description-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

.description-content p {
    margin-bottom: 12px;
}

.product-features h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.product-features ul {
    list-style: none;
    padding: 0;
}

.product-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.product-actions {
    display: flex;
    gap: 16px;
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.product-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    background: var(--card-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-value {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.product-tabs {
    margin-top: 40px;
}

.tab-headers {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
}

.tab-header {
    background: none;
    border: none;
    padding: 16px 24px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-header.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-header:hover:not(.active) {
    color: var(--text-primary);
}

.tab-content {
    display: none;
    animation: fadeInUp 0.5s ease;
}

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

.tech-specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--card-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.spec-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.spec-value {
    color: var(--text-primary);
    font-weight: 600;
}

.support-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    margin-top: 24px;
}

.support-info h4:first-child {
    margin-top: 0;
}

.support-info ul {
    list-style: none;
    padding: 0;
    margin-bottom: 24px;
}

.support-info li {
    padding: 8px 0;
    color: var(--text-secondary);
    line-height: 1.5;
}

.support-info p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

/* 购买模态框样式 */
.purchase-product-info {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--card-color);
    border-radius: 12px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.modal-product-img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.modal-product-details {
    flex: 1;
}

.modal-product-details h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-product-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-title {
        font-size: 1.5rem;
    }
    
    .current-price {
        font-size: 1.5rem;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .tab-headers {
        overflow-x: auto;
        padding-bottom: 2px;
    }
    
    .tab-header {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .tech-specs-grid {
        grid-template-columns: 1fr;
    }
    
    .purchase-product-info {
        flex-direction: column;
        text-align: center;
    }
    
    .modal-product-img {
        align-self: center;
    }
}