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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', 'Noto Color Emoji', sans-serif;
    line-height: 1.6;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 絵文字専用フォント指定 */
.app-icon {
    font-family: 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
}

main {
    flex: 1;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.3rem;
    opacity: 0.9;
}

section {
    padding: 60px 0;
}

.about {
    background: #f8f9fa;
    text-align: center;
}

.about h2, .contact h2, .apps h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.about p, .contact p {
    font-size: 1.1rem;
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.apps {
    background: #f8f9fa;
    text-align: center;
}

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

.app-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

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

.app-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.app-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.app-link {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.app-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.apps-more {
    margin-top: 2rem;
}

.btn-apps {
    display: inline-block;
    background: transparent;
    color: #2c3e50;
    text-decoration: none;
    padding: 1rem 2rem;
    border: 2px solid #2c3e50;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn-apps:hover {
    background: #2c3e50;
    color: white;
    transform: translateY(-2px);
}

.contact {
    text-align: center;
}

footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1.1rem;
    }
    
    section {
        padding: 40px 0;
    }
}