/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* Header styles */
header {
    background-color: #1a5f7a;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Main content styles */
main {
    padding: 3rem 0;
}

section {
    margin-bottom: 4rem;
}

section h2 {
    color: #1a5f7a;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* About section */
.about {
    background-color: white;
    padding: 3rem 0;
}

.about p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    text-align: justify;
}

/* Brands section */
.brands {
    background-color: #f8f9fa;
    padding: 3rem 0;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.brand-card {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.brand-card h3 {
    color: #1a5f7a;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Contact section */
.contact {
    background-color: white;
    padding: 3rem 0;
    text-align: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-info a {
    color: #1a5f7a;
    text-decoration: none;
    font-size: 1.2rem;
    padding: 0.5rem 1rem;
    border: 2px solid #1a5f7a;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.contact-info a:hover {
    background-color: #1a5f7a;
    color: white;
}

/* Footer styles */
footer {
    background-color: #1a5f7a;
    color: white;
    padding: 1.5rem 0;
    text-align: center;
}

/* Responsive design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    .brand-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        flex-direction: column;
    }
}