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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-brand h1 {
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.nav-brand p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-menu a:hover {
    opacity: 0.8;
}

.nav-icons {
    display: flex;
    gap: 1.5rem;
    cursor: pointer;
}

/* 主横幅 */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 100px 5%;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: #666;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

/* 产品系列 */
.collections {
    padding: 80px 5%;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.collection-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    padding: 2rem;
}

.collection-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.collection-image img {
    width: 100%;
    height: 250px;
    object-fit: contain;
    margin-bottom: 1.5rem;
}

.collection-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #667eea;
}

.collection-card p {
    color: #666;
    margin-bottom: 1rem;
}

.price-from {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: #f0f0f0;
    border-radius: 20px;
    color: #667eea;
    font-weight: bold;
}

/* 热门推荐 */
.featured {
    padding: 80px 5%;
    background: #f8f9fa;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    text-align: center;
    padding: 1.5rem;
}

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

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: contain;
    margin-bottom: 1rem;
}

.product-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.product-card .price {
    color: #667eea;
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.btn-add-cart {
    padding: 0.8rem 1.5rem;
    background: white;
    border: 2px solid #667eea;
    color: #667eea;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-add-cart:hover {
    background: #667eea;
    color: white;
}

/* 关于我们 */
.about {
    padding: 80px 5%;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.features {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.features i {
    color: #667eea;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    color: #666;
    margin-top: 0.5rem;
}

/* 联系我们 */
.contact {
    padding: 80px 5%;
    background: #f8f9fa;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

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

.info-item i {
    font-size: 2rem;
    color: #667eea;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 5% 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: white;
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: #667eea;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .about-content,
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}