:root {
    --main-gradation:linear-gradient(to bottom, rgba(59,141,168,1), rgba(173,216,230,1));
    --reverse-gradation: linear-gradient(to top, rgba(173,216,230,1), rgba(152,255,152,1));
    --sub-gradation:linear-gradient(to top, rgba(255,237,183,1), rgba(203,229,206,1));
    --text-color-opacity: 46,56,64;
    --clear-color-opacity: 255,255,255;
}

*,
*::before,
*::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:focus:not(:focus-visible) {
    outline: 0;
    /* キーボード操作"以外"でフォーカスされた際はoutlineを消す */
}

::selection {
    color: var(--clear-color);
    background: var(--main-color);
}

html {
    font-size: clamp(14px, 1vw, 18px);
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
@media (min-width: 1600px){
    html {
        font-size: clamp(12px, 0.8vw, 16px);
    }
}
@media (min-width: 481px) and (max-width: 768px){
    html {
        font-size: clamp(14px, 1.25vw, 18px);
    }
}
@media (max-width: 480px){
    html {
        font-size: clamp(14px, 1.5vw, 18px);
    }
}
@media (min-resolution: 2dppx) and (max-width: 480px){
    html {
        font-size: clamp(16px, 2vw, 20px);
    }
}


body{
    color: var(--text-color);
    font-weight: 400;
    letter-spacing: .1rem;
    line-height: 1.7;
    overflow-x: hidden;
}
ul,ol,li{
    list-style-type: none;
}
img{
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}
a{
    text-decoration: none;
    display: block;
}

#nav-toggle{
    z-index: 100;
    width: 7.5rem;
    height: 7.5rem;
    background: var(--clear-color);
    border: 2px solid var(--main-color);
    border-radius: 50%;
    position: fixed;
    top: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .75rem;

    span{
        background: var(--main-color);
        width: 4rem;
        height: .25rem;
        transition: 0.3s ease-in-out;
        transform: translateY(-.5rem);
    }
    .menu,
    .close{
        text-align: center;
        font-size: .8rem;
        color: var(--main-color);
        position: absolute;
        bottom: 1.25rem;
        left: 50%;
        transform: translateX(-50%);
    }
    .close{
        display: none;
    }
}


.open{
    #nav-toggle{
    gap: 0;

        span:nth-child(1) {
            transform: rotate(-45deg) translate(.3rem,-.3rem);
        }
        span:nth-child(2) {
            display: none;
        }
        span:nth-child(3) {
            transform: rotate(45deg) translate(-.5rem,-.5rem);
        }
        .menu {
            display: none;
        }
        .close {
            display: block;
        }
    }
}
@media (max-width: 767px){
    #nav-toggle{
        width: 5rem;
        height: 5rem;
        top: 1rem;
        right: 1rem;
        gap: .5rem;
    
        span{
            width: 3rem;
        }
        .menu,
        .close{
            font-size: .7rem;
            bottom: .5rem;
        }
    }
}


#global{
    display: none;
}
.open #global{
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--main-gradation);
    z-index: 99;
    transition: 0.3s ease-in-out;
    display: flex;
    justify-content: center;
    align-items: center;
}
nav{
    height: clamp(37.5rem, 80vh, 48rem);
    width: clamp(48rem, 90%, 68.75rem);
    display: grid;
    grid-template-columns: 15rem auto 20rem;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
}
.global__title{
    grid-column: 1;
    grid-row: 1;
}
.global__main{
    grid-column: 2;
    grid-row: 1;
    font-size: 1.5rem;
    display: grid;
    gap: 1.5rem;

    .mobile{
        display: none;
    }


    a{
        color: var(--clear-color);
    }
}

.global__sub{
    grid-column: 3;
    grid-row: 1;
    font-size: 1.5rem;
    display: grid;
    gap: 2rem;

    li{
        background: var(--main-color);
        text-align: center;
        display: grid;
        align-items: center;
        border-radius: 1rem;
        overflow: hidden;
    }
    a{
        color: var(--clear-color);
    }
    img{
        width: 100%;
        aspect-ratio: 2 / 1;
        object-fit: cover;
    }
}

.global__link{
    align-self: flex-start;
    grid-column: 1 / -1;
    grid-row: 2;
    font-size: 1.5rem;
    display: grid;
    grid-template-columns: repeat(3,auto);
    gap: 2rem;

    li{
        background: var(--clear-color);
        border-radius: 3rem;
        text-align: center;
        display: grid;
        align-items: center;
    }
    a{
        padding: .5rem 1rem;
        color: var(--main-color);
    }
}

@media (max-width: 767px){
    .open #global{
        overflow-y: auto;
        display: block;
    }
    nav{
        width: 80%;
        height: auto;
        display: block;
        margin: 2rem auto;
    }
    .global__title{
        display: none;
    }
    .global__main{
        font-size: 1.25rem;
        gap: 1rem;
        margin-bottom: 3rem;
        .mobile{
            display: block;
        }
    }
    .global__sub{
        font-size: 1rem;
        margin-bottom: 3rem;
        font-size: 1rem;
    }
    .global__link{
        align-self: center;
        grid-template-columns:1fr;
        font-size: 1rem;
    }
}


#others{
    background: var(--main-color);

    h1{
        width: clamp(22.5rem, 100%, 30rem);
        line-height: 0;
        padding: 1rem 2rem;
    }
}

.contact{
    display: grid;
    align-items: center;
}

.contact__back{
    grid-column: 1;
    grid-row: 1;

    img{
        object-fit: cover;
        width: 100%;
        height: 32rem;
    }
}

.contact__link{
    grid-column: 1;
    grid-row: 1;

    h2{
        width: 40rem;
        margin: 0 auto 3rem;
    }
    ul{
        width: clamp(48rem, 90%, 68.75rem);
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
        gap: 2rem;
    }
    li{
        background: rgba( var(--clear-color-opacity),.2);
        box-shadow: 0 .5rem 2rem 0 rgba(var(--main-color-opacity),.4);
        backdrop-filter: blur( .3rem );
        -webkit-backdrop-filter: blur( .3rem );
        border-radius: 2rem;
        border: 1px solid var(--clear-color);
        transition: .5s;

        &:hover{
            background: rgba( var(--clear-color-opacity),.3);
            backdrop-filter: blur( 1rem );
            -webkit-backdrop-filter: blur( 1rem );
        }
    }
    a{
        border-radius: 3rem;
        padding: 2rem 1.5rem;
        color: var(--clear-color);
        font-size: 1.5rem;
        text-align: center;
        transition: .5s;
    }
    figure{
        width: 8rem;
        height: 8rem;
        border-radius: 50%;
        background: var(--clear-color);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1rem;
    }
}

.contact__tel img,
.contact__mail img,
.contact__line img{
    width: 5rem;
}

.contact__tel span{
    background: var(--clear-color);
    color: var(--text-color);
    font-size: .9rem;
    border-radius: 2rem;
    padding: .5rem 0;
    text-align: center;
    display: block;
}
.contact__line span{
    display: block;
    font-size: 1rem;
}

@media (max-width: 767px){
    .contact{
        display: block;
        background: var(--accent-color);
        padding: 3rem 0;
    }
    
    .contact__back{
        display: none;
    }
    .contact__link{    
        h2{
            width: clamp(23rem, 90%, 40rem);
        }
        ul{
            width: 90%;
            margin: 0 auto;
            grid-template-columns: 1fr;
        }
    } 

}

iframe{
    margin: 0;
    padding: 0;
    vertical-align: bottom;
}

#footer{
    background: var(--main-gradation);
    padding: 4rem 0;
    display: grid;
    gap: 2rem;

    section{
        width: clamp(48rem, 90%, 68.75rem);
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(2,auto);
        gap: 4rem;
        justify-content: space-between;
    }
    div{
        color: var(--clear-color);
    }
    ul{
        display: flex;
        gap: 2rem;
        justify-content: flex-end;
    }
    a{
        color: var(--clear-color);
    }
    h3{
        font-size: 1.5rem;
    }
    address{
        font-style: normal;
    }
    .copy{
        text-align: center;
    }
    small{
        font-size: .85rem;
    }
}
.footer__btn{
    border: 3px double var(--clear-color);
    text-align: center;
    padding: .5rem;
    margin-top: 1rem;
}

@media (max-width: 767px){
    #footer{
        section{
            width: 90%;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        ul{
            display: block;
        }
    }
}
@media (max-width: 479px){
    #footer h2{
        width: 90%;
    }
}

#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background-color: var(--main-color);
    color: var(--clear-color);
    font-size: 18px;
    cursor: pointer;
    display: none;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transition: opacity 0.3s ease;
}

.pege_title{
        width: clamp(48rem, 90%, 68.75rem);
        margin: 2rem auto;

    h2 {
        position: relative;
        padding: .5rem 2rem;
        outline: 1px solid #333;
        font-size: 2rem;
        letter-spacing: 0.1em;
        color: #333;
        font-weight: 400;
        display: block;
        box-sizing: border-box;
        width: max-content;
        min-width: 30rem;
        text-align: center; 
        margin: 24px;
        margin-inline: auto;
        }

    h2::before {
        content: "";
        position: absolute;
        top: -6px;
        left: -6px;
        width: 40px;
        height: 40px;
        background: #d0e0e5;
        clip-path: polygon(0 0, 100% 0%, 0 100%);
        z-index:-999;
    }

    h2::after {
        content: "";
        position: absolute;
        top: 6px;
        left: 6px;
        width: 100%;
        height: 100%;
        outline: 1px solid #333;
    }
    .breadcrumbs{
        text-align: right;

        a{
            display: inline;
            color: var(--text-color);
        }
    }
}
@media (max-width: 767px){
    .pege_title{
        width: 90%;
        margin: 2rem auto;

        h2 {
            padding: .5rem 1rem;
            font-size: 1.15rem;
            min-width: 10rem;
            max-width: 20rem;
        }
        .breadcrumbs{
            text-align: left;
            font-size: .75rem;
        }
    }
}