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

:root {
    --primary-blue: #2563eb;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --dark-gray: #1f2937;
    --medium-gray: #6b7280;
    --light-gray: #f9fafb;
    --border-color: #e5e7eb;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--light-blue) 0%, #f0f9ff 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--dark-gray);
}

.container {
    width: 100%;
    max-width: 500px;
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    background: white;
    border-radius: 20px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 70px rgba(37, 99, 235, 0.2);
}

.logo {
    text-align: center;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
    margin-bottom: 0.5rem;
    white-space: nowrap;
}

.logo .llc {
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--medium-gray);
    white-space: nowrap;
}

.divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-blue), transparent);
    margin: 2rem 0;
    opacity: 0.3;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: 10px;
    transition: background-color 0.2s ease;
}

.contact-item:hover {
    background-color: var(--light-gray);
}

.icon {
    width: 24px;
    height: 24px;
    color: var(--secondary-blue);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--dark-gray);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.2s ease;
}

.contact-item a:hover {
    color: var(--primary-blue);
}

.contact-item span {
    color: var(--dark-gray);
    font-size: 1rem;
}

footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--medium-gray);
    font-size: 0.875rem;
}

/* レスポンシブデザイン */
@media (max-width: 600px) {
    body {
        padding: 1rem;
    }
    
    .card {
        padding: 2rem 1.5rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .logo .llc {
        font-size: 1.2rem;
    }
    
    .contact-item {
        font-size: 0.9rem;
    }
}

.link-section {
    margin-top: 1.5rem;
    text-align: center;
}

.business-link {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-blue);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.business-link:hover {
    background-color: var(--secondary-blue);
    transform: translateY(-2px);
}