body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
    background: #f5f5f5;
    color: #333;
}

.wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content {
    background: #ffffff;
    padding: 24px 32px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    max-width: 520px;
    box-sizing: border-box;
}

h1 {
    margin: 0 0 16px;
    font-size: 1.5rem;
}

p {
    margin: 0 0 8px;
    line-height: 1.7;
}

.emphasis {
    color: #d32f2f;
    font-weight: bold;
}

@media (max-width: 600px) {
    .content {
        margin: 16px;
        padding: 20px;
    }
}