/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #4A4A4A;
    background: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #E0E0E0;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: #4A4A4A;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #0066CC;
}

.lang-switch {
    padding: 6px 12px;
    background: #4A4A4A;
    color: #fff !important;
    border-radius: 4px;
}

/* Banner */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    text-align: center;
}

.hero-content {
    padding: 24px;
}

.hero h1 {
    font-size: 64px;
    font-weight: 300;
    letter-spacing: 16px;
    margin-bottom: 16px;
    color: #2c2c2c;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 300;
    color: #666;
    letter-spacing: 8px;
}

.hero-en {
    font-size: 14px;
    color: #999;
    letter-spacing: 4px;
    margin-top: 24px;
}

/* 通用标题 */
.section-title {
    font-size: 32px;
    font-weight: 300;
    text-align: center;
    margin-bottom: 48px;
    letter-spacing: 4px;
    color: #2c2c2c;
}

/* 产品展示 */
.products {
    padding: 120px 0;
    background: #fff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.product-card {
    text-align: center;
    transition: transform 0.3s;
}

.product-card:hover {
    transform: translateY(-8px);
}

.product-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #f8f8f8 0%, #e8e8e8 100%);
    margin-bottom: 24px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #E0E0E0;
    border-radius: 4px;
}

.product-image::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px dashed #ccc;
    border-radius: 50%;
}

.product-image::after {
    content: '产品图片';
    color: #999;
    font-size: 14px;
    letter-spacing: 2px;
    position: relative;
    z-index: 1;
    background: rgba(255,255,255,0.9);
    padding: 8px 16px;
    border-radius: 4px;
}

.product-card h3 {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.product-card p {
    font-size: 12px;
    color: #999;
    letter-spacing: 2px;
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background: #fafafa;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 16px;
    line-height: 2;
    color: #666;
    margin-bottom: 24px;
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-top: 48px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 200;
    color: #2c2c2c;
}

.stat-label {
    font-size: 14px;
    color: #999;
    letter-spacing: 2px;
}

/* 联系我们 */
.contact {
    padding: 120px 0;
    background: #fff;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
}

.contact-item {
    padding: 24px 0;
    border-bottom: 1px solid #E0E0E0;
}

.contact-label {
    font-size: 12px;
    color: #999;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
}

.contact-item p {
    font-size: 18px;
    color: #4A4A4A;
}

/* 页脚 */
.footer {
    padding: 48px 0;
    background: #2c2c2c;
    text-align: center;
    color: #999;
}

.footer p {
    font-size: 12px;
    margin-bottom: 8px;
}

.footer-en {
    font-size: 10px !important;
    color: #666;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-links {
        gap: 16px;
        font-size: 12px;
    }

    .hero h1 {
        font-size: 36px;
        letter-spacing: 8px;
    }

    .hero-subtitle {
        font-size: 16px;
        letter-spacing: 4px;
    }

    .product-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-stats {
        gap: 40px;
    }

    .stat-number {
        font-size: 36px;
    }
}