@charset "utf-8";

/* ===================
common
===================== */
:root {
    --maincolor: #0D3B66;
    --accentcolor: #D5A021;
    --primary-white: #FFFFFF;
    --primary-black: #000000;
    --contentwidth: 82.4%;
    /* width 309 */
    --contentpadding: 8.8%;
    /* padding　33px */
}

html {
    font-size: 62.5%;
}

body {
    font-family: "Noto Sans JP", serif, Arial;
    font-style: normal;
    color: var(--primary-black);
    background-color: var(--primary-white);
    line-height: 1.5;
}

img {
    max-width: 100%;
    height: auto;
}

.section {
    margin-top: 30px;
}

.topic {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    width: fit-content;
    text-align: center;
    font-family: "Noto Serif JP";
    font-size: 2.0rem;
    font-weight: 700;
}

.topic--sub {
    font-family: "Noto Sans JP";
    font-size: 1.4rem;
    font-weight: 400;
}

.topic::after,.topic::before {
    content: '';
    display: block;
    width: 22px;
    height: 1px;
    background: var(--accentcolor);
    transform: rotate(30deg);
}

.topic::after {
    margin: 4px -20px 0 auto;
}

.topic::before {
    margin: 0 auto 1px -12px;
}

.btn {
    display: block;
    width: 127px;
    height: 30px;
    color: var(--accentcolor);
    text-align: center;
    font-size: 1.2rem;
    font-weight: 300;
    line-height: 1;
    border: 0.8px solid var(--accentcolor);
    background-color: transparent;
    transition: 0.4s;
    margin: 0 auto;
    padding: 10px 18px;
}

button:hover {
    background-color: var(--accentcolor);
    color: var(--primary-white);
}

/* common pc */
@media screen and (min-width: 769px) {
    .section {
        padding: 0px;
    }

    .topic {
        font-size: 3.0rem;
        line-height: 1;
        letter-spacing: 4.5px;
    }

    .topic--sub {
        font-family: "Noto Sans JP";
        font-size: 1.6rem;
        font-weight: 300;
        line-height: 1;
    }

    .btn {
        width: 219px;
        height: 53px;
        font-size: 1.8rem;
        padding: 15px 54px;
    }

    .topic::after,.topic::before {
        width: 36px;
        transform: rotate(40deg);
    }
    
    .topic::after {
        margin: 20px 0 0 auto;
    }
    
    .topic::before {
        margin: 0 auto 20px 0;
    }
}

/* pc 769px */

/* ===================
header
===================== */
.header {
    margin: 0 auto;
    padding: 0 4.2%;
    height: 63px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10;
    transition: .3s;
}

.header__topic a {
    display: flex;
    align-items: center;
}

.logoimg__arks {
    width: 37px;
    height: 39px;
    margin-right: 5px;
}

.header__topic {
    color: var(--maincolor);
    text-align: center;
    font-family: "Noto Serif JP";
    font-weight: 700;
    font-size: 1.9rem;
    white-space: nowrap;
}

.header.scroll{
    background: rgba(255, 255, 255, 0.9);
}

/* nav初期設定 */
.nav {
    background-color: rgba(13, 59, 102, 0.8);
    width: 100%;
    height: 100vh;
    padding: 0 var(--contentpadding);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
    transform: translateX(100%);
    transition: transform 0.4s;
}

.nav.active {
    transform: translateX(25%);
}


.nav__list {
    margin: 100px 0 63px 0;
}

.nav__item {
    color: var(--primary-white);
    font-size: 1.6rem;
    line-height: 2.0;
    width: 155px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--accentcolor);
}

.nav__item:nth-child(5) {
    border-bottom: none;
    padding-bottom: 0;
}

.nav__item:nth-child(1) {
    padding-top: 0;
}

.menu--sub {
    font-size: 1.2rem;
    font-weight: 350;
    line-height: 1.3;
    display: block;
}

.sns {
    width: 27px;
    height: 27px;
    margin-top: 20px
}

.nav__header {
    height: 63px;
    display: flex;
    align-items: center;
    z-index: 10;
}

.menu {
    width: 33px;
    height: 33px;
    cursor: pointer;
    margin-left: auto;
    position: relative;
}

.menu span {
    display: block;
    margin: 0;
    border: none;
    width: 58%;
    height: 2px;
    background: var(--maincolor);
    transform-origin: -6% 50%;
    position: absolute;
    top: 7px;
    left: 25%;
    transition: .3s;
}

.close span {
    background: var(--primary-white);
}

.menu span:nth-of-type(2) {
    top: 14px;
}

.menu span:nth-of-type(3) {
    top: 21px;
}

.close span {
    left: 30%;
}

.close span:nth-of-type(1) {
    transform: rotate(45deg);
    width: 74%;
}

.close span:nth-of-type(2) {
    opacity: 0;
}

.close span:nth-of-type(3) {
    top: 26px;
    transform: rotate(-45deg);
    width: 74%;
}

/* header pc */
@media screen and (min-width: 769px) {
    .header {
        height: 6.2vw;
        padding: 30px 80px;

        /* max-width: 1440px;
        height: 133px;
        padding: 30px 80px; */
    }

    .logoimg__arks {
        width: 70px;
        height: 73px;
        margin-right: 10px;
    }

    .header__topic {
        font-size: 3.0rem;
        line-height: 1;
        letter-spacing: 4.5px;
    }

    .nav__header {
        display: none;
    }

    .nav {
        background: transparent;
        width: auto;
        height: auto;
        position: static;
        transform: translateX(0);
        padding: 0;
    }

    .nav__list {
        display: flex;
        align-items: center;
        margin: 0;
    }

    .nav__item {
        color: var(--maincolor);
        font-size: 2.0rem;
        font-weight: 350;
        line-height: 1.2;
        padding: 0 20px;
        position: relative;
        border-bottom: none;
        width: fit-content;
        text-align: center;
    }

    .nav__item-header,
    .nav__item-header {
        display: none;
    }

    .menu--sub {
        font-size: 1.4rem;
        font-weight: 350;
        line-height: 1.2;
        text-align: center;
    }

    .nav__item::after {
        content: '';
        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        width: 1px;
        background-color: var(--maincolor);
    }

    .nav__item-no-after::after {
        content: none;
    }

    .nav__item-no-after {
        padding-right: 0;
    }

    .sns {
        display: none;
    }

}

/* pc 769px */

/* footer */
.footer {
    padding: 20px 0 10px 0;
}

.footer__hr {
    border-width: 1px 0 0 0;
    border-style: dashed;
    border-color: var(--maincolor);
}

.logoimg {
    width: 126px;
    margin: 20px auto 10px;
    display: flex;
}

.logoimg__rver {
    width: 86px;
    height: 36px;
}

.nav__list-footer,
.sns-footer,.footer__hr-pc{
    display: none;
}

.copy {
    color: var(--maincolor);
    font-size: 1.2rem;
    font-weight: 350;
    line-height: 1.7;
    text-align: center;
}

/* footer pc */
@media screen and (min-width: 769px) {
    .footer {
        padding: 30px 0;
    }

    .footer__hr {
        display: none;
    }

    .footer__menu {
        max-width: 1280px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logoimg {
        width: 236px;
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 30px;
        margin: 0px;
    }
    
    .logoimg__arks-footer {
        margin-right: 0px;
    }
    
    .logoimg__rver {
        width: 136px;
        height: 57px;
    }
    
    .nav__list-footer {
        display: block;
        display: flex;
        justify-content: center;
    }

    .nav__item-footer {
        color: var(--maincolor);
        width: fit-content;
    }

   
    .nav__item-footer:last-child {
        padding-right: 0;
    }

    .nav__item-footer:first-child {
        padding-left: 0;
    }

    .nav__item-footer::after {
        background-color: var(--maincolor);
    }

    .nav__item-footer:last-child::after {
        content: none;
    }
    
    .footer__hr-pc {
        display: block;
        border-width: 1px 0 0 0;
        border-style: dashed;
        border-color: var(--maincolor);
        margin-top: 20px;
    }
    .sns-footer {
        display: block;
        margin: 0 0 0 30px;
    }

    .footer__item {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 20px;
        
    }

}


/* ===================
 scrollTop
===================== */
.topBtn {
    display: inline-block;
    padding: 12px;
    border-radius: 50%;
    background-color: var(--maincolor);
    color: var(--primary-white);
    font-size: 1.2rem;
    box-shadow: 2px 2px 4px 2px rgba(29, 101, 101, 0.2);
    /* box-shadow: 0 4px 0 #4080bd; */
    position: fixed;
    bottom: 2.4%;
    right: 6%;
}

/* pc */
@media screen and (min-width: 769px) {
    .topBtn {
        display: inline-block;
        padding: 18px;
        border-radius: 50%;
        background-color: var(--maincolor);
        color: var(--primary-white);
        font-size: 1.2rem;
        box-shadow: 2px 2px 4px 2px rgba(29, 101, 101, 0.2);
        /* box-shadow: 0 4px 0 #4080bd; */
        position: fixed;
        bottom: 2.4%;
        right: 4.5%;
    }
}
/* pc 769px */