body > header { 
    padding-inline:20px;
    position: sticky;
    top: 0;
    left: 0;
    background: var(--color-white);
    margin-bottom:20px;
    transition: all .3s ease;
}
body > header:has( details[open]:not(.close)) {
    position:fixed;
    width:100%;
}
body#pages > header ,
body#contact > header {
    margin-bottom:0;
    padding-bottom:20px;
    border-bottom:solid 2px var(--color-black);
}

body > header > .header-inner { 
    /* base固定 */
    max-width: 1500px;
    padding-top: 30px;
    padding-bottom:10px;
    margin-inline: auto;
    gap:20px;
}
body > header h1 {
    width: 300px;
    position: relative;
    margin-bottom: 5px;
}
body > header h1 > a {
    display: block;
    width: 100%;
    height: 100%;
}
body > header h1 img {
    width: 100%;
    height: 100%;
}
.header-nav-wrap {
    --gap: 20px;
    margin-left: auto;
    flex:1;
    max-width:800px;
}
body > header a:hover { color: var(--main-color);}


/* === ヘッダーナビゲーション nav--info === */

.nav-info .button.button-simple {
    min-width: unset;
    --simple-w: 88px;
    --simple-h: 30px;
    font-size: 14px;
    letter-spacing: 0;
    border-width: 2px;
    padding-inline: 0;
}
.nav-info .button.button-simple:hover {
    --simple-bg-color: var(--color-black);
    color: var(--main-color);
}
.nav-info .nav-recruit { 
    --simple-bg-color: var(--color-yellow);
    gap: calc(var(--gap-1) / 2);
}
.nav-info .button.button-simple.nav-recruit:hover { color: var(--color-yellow); }
.nav-info .button.button-simple.nav-recruit:hover .blank { background-image: url(../_img/common/icon/icon-external-yellow.svg); }

.nav-info .nav-contact { --simple-bg-color: var(--color-pink); }
.nav-info .button.button-simple.nav-contact:hover { color: var(--color-pink); }

.nav-info .contact-free-call .tel { font-size: 27px; }
.nav-info .contact-free-call .hours { font-size: 14px; }
/* === ヘッダーナビゲーション main-nav === */
.main-nav {
    font-size: 1rem;
    font-weight: bold;
}


/* Responsive */
@media (max-width: 1240px) {
    .contact-free-call {
        display:none;
    }
}
@media (max-width: 1200px) {
    :root { --header-offset: 100px; }
    body > header {
        margin-bottom:0;
    }
    body#pages > header ,
    body#contact > header {
        border-bottom:none;
    }
    body > header > .header-inner { padding-block: 20px; }
    body > header h1 {
        width: 200px;
        height: 61.8px;
    }
}