:root{
    --brand-blue: #005CAB;
}

/* 共通 */
h1,
h2,
h3,
h4,
h5{
    font-family: "Montserrat", "Arial Black", Arial, sans-serif;
    color: var(--brand-blue);
    font-weight: 800;
    line-height: 1.0;
    letter-spacing: -0.03em;
    margin: 0 0 0.6em;}

/* 見出し階層 */
h1{
    font-size: 38px;
}

h2{
    font-size: 29px;
}

h3{
    font-size: 22px;
}

h4{
    font-size: 18px;
}

h5{
    font-size: 15px;
}