:root {
    --color-green-100: #E6EDEA;
	--color-green-400: #72A86A;
	--color-green-500: #669250;
	--color-green-700: #1A8254;
	--color-green-900: #104B2F;
	--color-thick-green: #104B2F;
	--color-black: #333333;
	--color-brown: #926B50;
	--color-cream: #FFFBE5;
	--color-yellow: #FFEFBA;
	--color-gray-800: #7B7B7B;
	--color-gray-900: #707070;
    --color-graygreen: #537063;
	--color-lightgreen: #E8F9F1;
}

html {
    font-size: 62.5%;
}


@media only screen and (max-width: 1400px) and (min-width: 751px) {
    html {
        font-size: calc(10 * (100vw / 1400));
    }
}

main {
    font-family: 'LineSeedJP', sans-serif;
    letter-spacing: 0.1em;
}

.sp-only{
    display: none;
}

/* flex */
.fl {
    display: flex;
    flex-wrap: wrap;
}
.fl-reverse{
    flex-direction: row-reverse;
}
.f-lente-block {
    width: 100%;
    margin: 0 auto;
}

/* bk-color */
.f-lente-blockbk {
    background: var(--main-color-gradatio);
}

/* button */
.btn-m {
    text-align: right;
}
.btn-m a{
    display: inline-block;
}
.btn-m p {
    font-size: 2rem;
    color: var(--main-color-black);
    margin: 0 auto;
}

.btn-m p img {
    width: 4.8rem;
    vertical-align: middle;
    margin-left: 1rem;
}

.btn-y {
    width: 17rem;
    height: 4.8rem;
    display: flex;
    filter: drop-shadow(0px 4px 20px rgba(0, 0, 0, 0.25));
    background: var(--main-color-yellow);
    border-radius: 8px;
}

.btn-y a {
    width: 100%;
    line-height: 3;
    text-decoration: none;
    font-size: 1.6rem;
    font-family: 'LineSeedJP';
    font-weight: 600;
    color: var(--main-color-green);
    text-align: center;
}

/* link hover*/
a {
    text-decoration: none;
}

a:hover {
    opacity: .6;
    transition: .3s;
}

.btn-y:hover {
    opacity: .8;
    transition: .3s;
}

/* grad background */
.f-lente-blockbk {
    background: var(--main-color-gradatio);
    width: 100%;
    margin: 0 auto;
}

/* title */
.main-ttl-en {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 1rem;
    line-height: 0.5;
}

.main-ttl h3 {
    font-size: 3.6rem;
}

.sub-ttl {
    font-size: 2.4rem;
    font-weight: 700;
}

/* text */
.main-txt {
    font-size: 1.6rem;
    color: var(--main-color-black);
    line-height: calc(30/16);
}

/* ================================ */
/* about us */
.about-us {
    width: 120rem;
    margin: 0 auto 11rem;
}

.about-us-img {
    width: 56.3rem;
    margin: auto -4rem auto 0;
}

.about-us-content {
    width: 67.6rem;
    background: #FFFFFF;
    box-shadow: 9px 9px 23px rgba(216, 216, 216, 0.9);
    border-radius: 20px;
    padding: 6rem;
}

.about-us-content-txt p {
    margin: 2.5rem 0;
}

.about-us .main-ttl {
    color: var(--main-color-green);
}

.about-us-content img {
    width: 26.4rem;
}

/* ================================ */
/* contact */
.contact {
    width: 120rem;
    margin: 0 auto;
}

.contact .main-ttl {
    text-align: center;
    color: var(--main-color-green);
}

.contact-content {
    justify-content: center;
    margin: 4.5rem auto 14rem;
}

.contact-content img {
    width: 27.9rem;
}

.contact-content .btn-m {
    text-align: unset;
    margin: 0 0 0 8rem;
}


@media only screen and (max-width: 750px) {

    html {
        font-size: calc(10 * (100vw / 750));
    }
    .sp-only{
        display: block;
    }
    .pc-only{
        display: none;
    }
    /* btn */
    .btn-m p img{
        width: 5.8rem;
    }
    .btn-m p{
        font-size: 2.6rem;
    }
    .btn-y{
        width: 30rem;
        height: 7.8rem;
    }
    .btn-y a{
        line-height: 3.3;
        font-size: 2.4rem;
    }
    /* title */
    .main-ttl h3 {
        font-size: 4rem;
    }
    .sub-ttl{
        font-size: 3.2rem;
    }
    /* text */
    .main-txt{
        font-size: 2.4rem;
    }
    /* about us */
    .about-us{
        width: 67.5rem;
    }
    .about-us-img{
        width: 100%;
        margin: 0;
    }
    .about-us-content{
        width: 67.5rem;
        border-radius: 0 0 8px 8px;
        margin: -38rem 0 0 auto;
    }
    .about-us-content-txt p{
        margin: 2.5rem 0 4.5rem;
    }
    /* contact */
    .contact{
        width: 67.5rem;
    }
    .contact-content{
        margin: 3.5rem auto 14rem;
    }
    .contact-content img{
        width: 55.9rem;
    }
    .contact-content .btn-m{
        margin: 3rem auto 0;
    }
}