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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: #fff;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header .container,
.footer .container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header .container {
    justify-content: space-between;
}

.footer .container {
    flex-direction: column;
    text-align: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #ffe66d;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffe66d;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.hero {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 50%, #2d6ba3 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 8px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 12px;
    opacity: 0.95;
}

.hero-desc {
    font-size: 18px;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto;
}

.products {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #4a90d9, #357abd);
    border-radius: 2px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.product-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.product-card.active {
    border-color: #4a90d9;
    background: linear-gradient(135deg, #fff 0%, #f0f7ff 100%);
}

.product-card.upcoming {
    border-color: #e0e0e0;
    background: #fafafa;
}

.product-icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.product-name {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 12px;
}

.product-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-link {
    display: inline-block;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: #fff;
    padding: 12px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.product-link:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(74, 144, 217, 0.4);
}

.product-badge {
    display: inline-block;
    background: #e0e0e0;
    color: #999;
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.about {
    padding: 80px 0;
    background: #fff;
}

.about-content {
    text-align: center;
    font-size: 18px;
    color: #555;
    max-width: 700px;
    margin: 0 auto;
    line-height: 2;
}

.media-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.media-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: #fff;
    border-radius: 10px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 2px solid transparent;
    min-width: 100px;
}

.media-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.media-icon {
    width: 40px;
    height: 40px;
}

.media-name {
    font-size: 13px;
    font-weight: 600;
    color: #2c3e50;
    white-space: nowrap;
}

.footer {
    background: #2c3e50;
    color: #95a5a6;
    padding: 40px 0;
    margin-top: 40px;
}

.footer-info p {
    font-size: 14px;
}

.footer-beian {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.beian-link {
    color: #95a5a6;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

.beian-link:hover {
    color: #fff;
}

.beian-icon {
    height: 16px;
    width: auto;
    vertical-align: middle;
    margin-right: 4px;
}

.beian-divider {
    color: #95a5a6;
    font-size: 14px;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
        letter-spacing: 4px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-card {
        padding: 30px 20px;
    }

    .header .container {
        flex-direction: column;
    }

    .nav {
        gap: 20px;
    }
}