.section-main {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.section-box {
    width: min(95vw, 80vh);
    max-width: 720px;
    min-height: 540px;
    border: 1px solid #c0392b;
    border-radius: 8px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
}

.section-header {
    border-bottom: 1px solid #c0392b;
    padding-bottom: 1.2rem;
    margin-bottom: 1.5rem;
}

.back-link {
    font-size: 0.72rem;
    color: #c0392b;
    text-decoration: none;
    letter-spacing: 0.08em;
    display: block;
    margin-bottom: 0.8rem;
}

.back-link:hover {
    opacity: 0.7;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #111;
    letter-spacing: 0.08em;
}

.post-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.post-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.post-date {
    font-size: 0.72rem;
    color: #aaa;
    flex-shrink: 0;
    letter-spacing: 0.05em;
}

.post-title {
    font-size: 0.9rem;
    color: #222;
    text-decoration: none;
    letter-spacing: 0.05em;
    flex: 1;
}

.post-title:hover {
    color: #c0392b;
}

.post-cat {
    font-size: 0.65rem;
    color: #aaa;
    border: 1px solid #ddd;
    padding: 0.1rem 0.4rem;
    border-radius: 2px;
    flex-shrink: 0;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 2rem;
    font-size: 0.78rem;
    color: #666;
}

.pagination a {
    color: #c0392b;
    text-decoration: none;
}

.pagination a:hover {
    opacity: 0.7;
}

.post-content {
    font-size: 0.9rem;
    line-height: 2;
    color: #333;
}

.post-content p {
    margin-bottom: 1.2rem;
}

pre {
    white-space: pre-wrap;
    word-break: break-all;
}

.post-content * {
    font-family: '游明朝', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
}