.shippori-mincho {
    font-family: 'Shippori Mincho', serif;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
	width: 75%;
}

.header {
    text-align: center;
    margin-bottom: 60px;
}

.header h1 {
    font-size: 3.8rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: #222;
    letter-spacing: 0.05em;
}

.header .subtitle {
    font-size: 3rem;
    color: #999;
    letter-spacing: 0.1em;
}

.intro {
    margin-bottom: 50px;
    font-size: 1.5rem;
    line-height: 2;
}

.section {
    margin-bottom: 50px;
}

.page-title {
    font-family: 'Shippori Mincho', serif;
    font-size: 28px;
    /* font-weight: 600; */
    margin-bottom: 30px;
    border-bottom: 2px solid #d32f2f;
    padding-bottom: 10px;
}

.section-title {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 30px;
    padding-bottom: 10px;
    color: #222;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #ddd;
    font-family: 'Shippori Mincho', serif;
}

.section-intro {
    margin-bottom: 30px;
    font-size: 1.5rem;
    line-height: 2;
}

.box {
    margin-bottom: 35px;
}

.box-title {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 12px;
    padding-bottom: 8px;
    color: #333;
    border-bottom: 1px solid #ddd;
    font-family: 'Shippori Mincho', serif;
}

.box-content {
    font-size: 1.5rem;
    line-height: 2;
    color: #444;
}

.inbox {
    margin-top: 25px;
    margin-left: 20px;
}

.inbox-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 10px;
    color: #333;
}

.inbox-content {
    font-size: 1.5rem;
    line-height: 2;
    margin-bottom: 15px;
    color: #444;
}

ul {
    margin: 15px 0 15px 20px;
}

ul li {
    margin-bottom: 8px;
    font-size: 1.5rem;
    line-height: 2;
    color: #444;
}

.subsection {
    margin-top: 20px;
    margin-left: 15px;
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: #333;
}

.subsection-content {
    font-size: 1.5rem;
    line-height: 2;
    margin-bottom: 15px;
    color: #444;
}

@media (max-width: 768px) {
    .container {
        padding: 40px 20px;
		width: 95%;
    }

    .header h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.2rem;
    }
}