/* Base Styles */
body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--light-color);
}

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

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a2b3c;
    margin-bottom: 10px;
}

.section-subtitle {
    color: #666;
    font-size: 1rem;
}

.content-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1a2b3c;
    margin-bottom: 30px;
    line-height: 1.4;
}

.content-description {
    color: #666;
    line-height: 1.8;
    margin-bottom: 30px;
}

/* Utility Classes */
.u-pt40 {
    padding-top: 40px !important;
}

.u-mt60 {
    margin-top: 60px !important;
}

.u-mb20 {
    margin-bottom: 20px !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .content-title {
        font-size: 1.5rem;
    }
}