* {
    font-family: "Zen Kaku Gothic Antique", sans-serif;
    font-style: normal;
    scroll-behavior: smooth;
}



/*

元々の色
    --main-color: #010F9E;

現状の色
    --main-color: #005bea ;
    --sub-color: white;
    --main-color2:#00c6fb;
    

候補2
    margin: 0;
    --main-color:  #30cfd0;
    --sub-color: white;
    --main-color2:#330867;

    候補３
        margin: 0;
    --main-color:  #667eea;
    --sub-color: white;
    --main-color2:#764ba2;
*/

body {
    margin: 0;
    --main-color: #005bea ;
    --sub-color: white;
    --main-color2:#00c6fb;
}


a {
    text-decoration: none;
}

li {
    list-style: none;
}

p {
    font-weight: 500;
    color: #444444;
}

/* 共通アイテム */
.strong-blue {
    background-color: var(--main-color2);
    width: fit-content;
    color: white;
    font-size: 24px;
    font-weight: 600;
    padding: 2px 7px;
}

.inline-blue {
    display: inline;
    background: linear-gradient(90deg, var(--main-color), var(--main-color2));
    width: fit-content;
    color: white;
    font-size: 24px;
    font-weight: 600;
    line-height: 1.6;
}

.nav-menu {
        display: flex;
        color: #010F9E;
        font-size: 16px;
        text-decoration: none;
        font-weight: 800;
        border-bottom: 1px solid #010F9E;
        padding: 10px;
        margin: 8px;
        width: fit-content;
        align-items: center;
    }
    
.nav-menu::after {
        content: "";
        display: block;
        width: 30px;
        height: 30px;
        background-image: url(case-study_nav.svg);
        background-size: 25px 25px;
        background-repeat: no-repeat;
        padding: 0 15px;
    }

/* fv */
.fv-wr {
    background: linear-gradient(90deg, var(--main-color), var(--main-color2));
}

.fv {
    padding: 30px 8px;
    color: white;
    line-height: 1.25;
    font-weight: 900;
    max-width: 1280px;
    margin: 0 auto;
}

.fv >  p {
    color: var(--sub-color);
    font-size: 1em;
    padding-left: 3px;
    font-weight: 600;
}

.fv > p::before {
    content:"";
    width: 3em;
    height: 1px;
    background-color: white;
    display: inline-block;
    vertical-align: middle;
    margin-right: 10px;
}

@media(min-width:1000px){
    .fv {
        padding: 4em;
    }

    .fv > h1 {
        font-size: 80px;
        margin: 0;
    }

    .fv > p {
        margin: 0;
    }
}

/*  フッター   */
/* 会社情報 */
.c-box {
    width: 100%;
}

.c-box:hover {
    filter: brightness(1.6);
}

.c-box > div {
    width: fit-content;
    margin: 0 auto;
}
.comp {
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)),
                url(comp.jpg);
    height: 270px;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    padding-top: 10px;
}

.c-box > p {
    color: var(--sub-color);
    font-size: 2em;
    font-weight: bold;
    width: fit-content;
    margin: 2em auto;
    box-sizing: border-box;
}

.c-box >  div > a {
    background-color: var(--sub-color);
    border: 1px solid var(--main-color);
    padding: 22px 76px 22px 59px;
    font-weight: bold;
    border-left: 8px solid var(--main-color);
    max-width: 250px;
    position: relative;
    color: black;
    text-decoration: none;
}

.c-box >  div > a:hover {
    color: white;
    background-color: var(--main-color);
    transition: all 0.4s;
    filter: brightness(0.7);
}

.c-box > div > a::after {
    content: url(yz.svg);
    color: black;
    display:block;
    position: absolute;
    top: 35%;
    right: 20%;
}

.c-box > div > a:hover::after{
    color: white;
}

/* 採用情報 */
.recr {
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)),
                url(rec.jpg);
    height: 270px;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    padding-top: 10px;
}

/* お問い合わせ */
.wr {
    background: linear-gradient(90deg, var(--main-color), var(--main-color2));
    color: var(--sub-color);
    margin: 0;
    height: 300px;
}

.wr > p {
    width: fit-content;
    margin: 0 auto;
    font-size: 2em;
    color: var(--sub-color);
    padding: 25px 0;
}
.c-wr {
    width: fit-content;
    margin: 0 auto;
}
.c-wr > a:first-child{
    display: block;
    width: fit-content;
    background-color: var(--sub-color);
    border: 1px solid var(--main-color);
    padding: 24px 70px 24px 32px;
    font-weight: bold;
    max-width: 250px;
    position: relative;
    color: black;
    text-decoration: none;
    margin-bottom: 20px;
}

.c-wr > a {
    display: block;
    width: fit-content;
    background-color: var(--sub-color);
    border: 1px solid var(--main-color);
    padding: 24px 45px 24px 15px;
    font-weight: bold;
    max-width: 250px;
    position: relative;
    color: black;
    text-decoration: none;
    margin-bottom: 20px;
    position: relative;
}

.c-wr > a:hover {
    filter: brightness(0.5);
}


.c-wr > a::after {
    content: url(yz.svg);
    color: black;
    display: block;
    position: absolute;
    top: 26px;
    right: 20px;
}

.copy {
    background: linear-gradient(90deg, var(--main-color), var(--main-color2));
    color: var(--sub-color);
    margin: 0;
}

.copy > p {
    color: white;
    margin: 0 auto;
    width: fit-content;
    font-size: 14px;
}

@media(min-width:640px) {
    .b-box {
        display: flex;
    }

    .c-box > p {
        font-size: 3em;
        margin: 1em auto;
    }

    .wr {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .wr > p {
        font-size: 3em;
        margin: 0;
        flex-basis: 35%;
    }

    .c-wr {
        margin: 0;
        padding-top: 20px;
    }

}


/* ヘッダー　*/
header {
    margin: 0 auto;
    padding: 1em 8px;
}

.logo {
    width: 100%;
}

.catch {
    color: var(--sub-color);
    margin: 0;
    padding: 0;
    font-size: 14px;
    min-width: 210px;
}

.ham {
    display: flex;
}

.hamburger_btn {
    display: flex;
    flex-flow: column nowrap;
    width: 30px;
    position: absolute;
    top: 10px;
    right: 5px;
    z-index: 1000;
    padding: 10px;
    gap: 10px 0;
    flex-shrink: 0;
    
}

.hamburger_btn > span {
    display: block;
    background-color: var(--sub-color);
    width: 100%;
    height: 1px;
    transition: transform .3s, opacity .3s;
}

.header_btn {
    flex-shrink: 0;
    display: block;
}

.menu {
    width: 100%;
    height: 100vh;
    position: fixed;
    transform: translateX(100%);
    transition: all 0.6s;
    overflow-y: scroll;
    background-color: var(--main-color);
    z-index: 900;
    top: 0;
    margin-top: -20px;
    gap: 15px;
}

.menu.menuopen {
    transform: translateX(0%);
}

.menu .head_nav li a {
    color: var(--sub-color);
    font-family:"Zen Kaku Gothic Antique", sans-serif;
    display: block;
    color: #fff;
    letter-spacing: 0.06rem;
    font-weight: 500;
    padding: 15px 0;
    text-decoration: none;
    border-bottom: var(--sub-color) 1px solid;
}

.head_nav {
    margin: 2em auto;
    margin-right: 0;
    padding: 33px;
    width: 90%;
    font-size: 20px;
    justify-content: end;
    transition: background-color 0.5s, color 0.5s;
}

.conta header {
    background: linear-gradient(90deg, var(--main-color), var(--main-color2));
}

.h-wr {
    max-width: 1280px;
    margin: 0 auto;
}

@media(max-width:800px) {
    .header_btn {
        text-align: center;
        margin-top: -1em;
    }
    .header_btn > span {
        color: white;
        border: 1px solid white;
        padding: 1em 5em;
    }

}

@media(min-width:800px) {
    .h-wr {
        display: flex;
        justify-content: space-between;
        align-items: start;
    }
    .menu {
        display: flex;
        transform: none;
        transition: none;
        background-color: transparent;
        position: static;
        height: 150px;
        justify-content: center;
        align-items: center;
        overflow: hidden;
    }

    .head_nav {
        display: flex;
        flex-wrap: wrap;
        margin: 0;
        padding: 0;
        height: fit-content;
        max-width: 830px;
        gap: 0 20px;
        flex-grow: 1;
        font-size: 16px;
    }

    .menu .head_nav li a {
        border-bottom: none;
        transition: background-color 0.5s, color 0.5s;
        padding: 10px;
    }
    .menu .head_nav li a:hover {
        background-color: var(--sub-color);
        color: #010F9E;
    }

    .hamburger_btn {
        display: none;
    }

    .header_btn  {
        color: white;
        font-weight: bold;
        display: block;
        background-color: var(--sub-color);
        color: var(--main-color);
        padding: 24px 60px;
        margin-left: 10px;
        border: var(--sub-color) 1px solid;
        transition: background-color 0.5s, color 0.5s;
    }

    .header_btn:hover {
        background-color: var(--main-color2);
        color: white;
    }

    .ham {
        flex-basis: 35%;
    }
}

@media(min-width:1000px) {
    .head_nav {
        font-size: 20px;
    }
}