/* base */

html{
    font-size: 62.5%;
}      

body {
    color: #171717;
    font-size: 1.6em;
    line-height: 1.8;
    letter-spacing: 0.05em;
    font-family: 'Noto Serif', 'Noto Serif JP';
}

body.noscroll {
    overflow: hidden;
}

img {
    width: 100%;
    vertical-align: bottom;
}

 a {
     text-decoration: none;
     color: #fff;
 }

 li {
    list-style: none;
}

/* header */

.header {
    padding: 19px 30px;
    position: absolute;
    top: 0;
    left: 50%;
    z-index: 1;
    transform: translateX(-50%);
    box-sizing: border-box;
    width: 100%;
    transition: .3s;
}

.header_wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    font-style: italic;
}

.header.fixed {
    position: fixed;
    background-color: #282F35;
    padding: 30px;
    width: 100%;
    transition: .3s;
}

header a {
    transition: .3s;
    /* font-weight: bold;  イタリックはboldしか入れていない*/
}

header a:hover {
    opacity: .7;
    transition: .3s;
}

.site_ttl {
    font-size: 2.6rem;
}

.nav_list {
    display: flex;
}

.nav_item {
    margin-right: 30px;
}

.nav_item:last-of-type {
    margin-right: 0;
}

.burger_btn {
    display: none;
}

/* page title */

.page_ttl_wrapper {
    height: 453px;
    position: relative;
    background-image: url(../img/contact-page-bgi@2x.jpg);
    /* background-position: center; */
    background-size: cover;
    color: #fff;
}

.page_ttl {
    font-size: 6rem;
    font-weight: bold;
    font-style: italic;
    text-align: center;
    padding-top: 186px;
}

.page_ttl_bottom {
    font-size: 9rem;
    opacity: 5%;
    margin: 40px;
    margin: 20px 0 0 45px;
}

/* form */

.form_wrapper {
    padding: 100px 0 80px;
}

.form_list {
    max-width: 700px;
    margin: 0 auto 80px;
    padding: 0 50px;
}

.form_label {
    display: block;
    margin-bottom: 5px;
    /* font-size: 1.6rem; */
    font-weight: bold;
}

input, textarea {
    resize: none;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    border: 1px solid #141414;
    width: 100%;
    padding: 0 8px;
    box-sizing: border-box;
    color: #171717;
    line-height: 30px;
}

.input_text {
    margin-bottom: 25px;
}

.textarea {
    height: 171px;
    color: #171717;
}

.checkbox_list {
    display: flex;
}

.checkbox_item {
    margin: 0 20px 20px 0;
}

.checkbox_item label
.checkbox  {
    cursor: pointer;
}

.checkbox {
    border: #282f35 1px solid;
    height: 10px;
    width: 10px;
    margin-right: 10px;
    padding: 0;
}

.checkbox:checked {
    background-color: #333;
}

.submit_btn {
    display: block;
    width: 235px;
    line-height: 60px;
    text-align: center;
    margin: 0 auto;
    background-color: #F7D43F;
    border-radius: 30px;
    box-shadow: 0 0 6px #1b1310;
    font-weight: bold;
    transition: .3s;
    /* outline: none; */
    /* appearance: none; */
    border: none;
    text-decoration: none;
}

.submit_btn:hover {
    opacity: .7;
    transition: .3s;
    cursor: pointer;
}

/* footer */

footer {
    padding: 30px 0;
    text-align: center;
    font-size: 1.4rem;
    font-weight: bold;
    color: #282F35;
}

/* responsive */

@media screen and (max-width: 768px) {
    
    /* base sp */
    
    /* header sp */

    .header {
        padding: 30px 4vw 0;
    }

    .header_nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: #282F35;
    }

    .nav_list {
        height: 100%;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .nav_item {
        margin: 0 0 30px;
    }

    .nav-item:last-of-type {
        margin-bottom: 0;
    }

    .burger_btn {
        display: block;
        position: absolute;
        top: 30px;
        right: 4vw;
        border: none;
        background-color: transparent;
        cursor: pointer;
        padding: 0;
        outline: none;
        appearance: none;
    }
      
    .burger_btn .bar {
        display: block;
        width: 30px;
        height: 3px;
        background-color: #fff;
    }
      
    .bar_top {
        margin-bottom: 8px;
    }
      
    .bar_middle {
        margin-bottom: 8px;
    }

     /* ハンバーガーメニューが開いたとき */            
    .burger_btn.cross .bar_top {
        transform: rotate(45deg) translate(8px, 8px);
        transition: .3s;
    }
      
    .burger_btn.cross .bar_middle {
        opacity: 0;
        transition: .3s;
    }
      
    .burger_btn.cross .bar_bottom {
        transform: rotate(-45deg) translate(8px,-8px);
        transition: .3s;
    }
      
    body.noscroll {
        overflow: hidden;
    }

    /* form sp */
        .checkbox_list {
            display: block;
        }

        .checkbox_list {
            margin-right: 0;
        }

}