/* 全局样式 */
:root {
    --primary-color: #FF6B6B;
    --secondary-color: #4ECDC4;
    --text-color: #2C3E50;
    --background-color: #F8F9FA;
    --card-background: #FFFFFF;
    --card-shadow: 0 8px 16px rgba(255, 107, 107, 0.1);
    --warm-gradient: linear-gradient(45deg, #FF6B6B, #FFB6C1);
    --soft-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Noto Sans', 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #FFFFFF;
}

/* 导航栏样式 */
header {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

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

/* Banner样式 */
.banner {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85);
    transform-origin: center;
    animation: slowZoom 20s ease-in-out infinite alternate;
}

@keyframes slowZoom {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.1);
    }
}

.banner-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    width: 100%;
    max-width: 1800px;
    padding: 2.8rem 9rem;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    border-radius: 4px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
}

[lang="en"] .banner-overlay h2 {
    font-size: 3em;
    margin-bottom: 1.2rem;
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.01em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

[lang="en"] .banner-overlay p {
    font-size: 1.3em;
    margin: 0 auto;
    max-width: 1200px;
    font-weight: 300;
    opacity: 0.95;
    line-height: 1.4;
    letter-spacing: 0.01em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
}

/* 产品列表样式 */
.products {
    max-width: 1000px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.product-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--card-background);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: row;
    align-items: stretch;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image {
    width: 40%;
    min-height: 300px;
    overflow: hidden;
}

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

.product-info {
    width: 60%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.price-tag {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.price-amount {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: bold;
}

.original-price {
    text-decoration: line-through;
    color: #999;
}

.discount-badge {
    background-color: var(--primary-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
}

.product-specs {
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.product-specs h4 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.product-specs ul {
    list-style: none;
}

.product-specs li {
    margin-bottom: 0.5rem;
    color: #666;
}

.buy-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    margin-top: auto;
    transition: background-color 0.3s ease;
    text-align: center;
    width: fit-content;
}

.buy-button:hover {
    background-color: #ff5252;
}

/* 页脚样式 */
footer {
    background-color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.1);
}

footer p {
    color: var(--text-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

.footer-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.footer-link:hover {
    color: var(--primary-color);
    opacity: 1;
}

[lang="en"] .footer-link {
    font-weight: 400;
    letter-spacing: 0.02em;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-card {
        flex-direction: column;
    }
    
    .product-image {
        width: 100%;
        height: 250px;
    }
    
    .product-info {
        width: 100%;
        padding: 1.5rem;
    }
    
    .banner-overlay {
        width: 98%;
        padding: 2.5rem 6rem;
        max-width: none;
    }
    
    [lang="en"] .banner-overlay h2 {
        font-size: 2.4em;
        margin-bottom: 1rem;
    }
    
    [lang="en"] .banner-overlay p {
        font-size: 1.2em;
        max-width: 800px;
    }
}

@media (max-width: 480px) {
    .banner-overlay {
        width: 100%;
        padding: 2rem 3rem;
    }
    
    [lang="en"] .banner-overlay h2 {
        font-size: 1.8em;
        margin-bottom: 0.8rem;
    }
    
    [lang="en"] .banner-overlay p {
        font-size: 1.1em;
        max-width: 100%;
    }
    
    .product-image {
        height: 200px;
    }
    
    .product-info {
        padding: 1rem;
    }
    
    .buy-button {
        width: 100%;
    }
}