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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

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

/* Header */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: 700;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    color: var(--white);
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 300;
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* About Section */
.about {
    background-color: var(--bg-light);
}

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

.about-content p {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-light);
}

/* Business Section */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.business-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.business-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.business-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
}

.business-card p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* Contact Section */
.contact {
    background-color: var(--bg-light);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.contact-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background-color: var(--text-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
}

.footer p {
    margin: 0.3rem 0;
}

.footer-note {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .hero {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
}