:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --text-color: #333;
    --light-bg: #f8f9fa;
}

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

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

header {
    position: fixed;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary-color);
    margin-left: 2rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--secondary-color);
}

main {
    padding-top: 60px;
}

section {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.about {
    text-align: center;
    padding: 4rem 2rem 2rem;
}

.about h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.about p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.about .description {
    max-width: 600px;
    margin: 0 auto;
    color: #666;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 1rem 0;
}

.service-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.service-card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.contact {
    background-color: var(--light-bg);
    text-align: center;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.contact-info p {
    margin-bottom: 0.5rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--primary-color);
    color: white;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    section {
        padding: 2rem 1rem;
    }
    
    .about h1 {
        font-size: 2rem;
    }
}