@charset "UTF-8";

/*
ブレイクポイント
SP 〜749px
pc 750px~ (min-width:750px)
*/


/*======================
変数宣言
======================*/
:root {
    --bg-color-rgb: 213, 235, 255;
    --text-color: #00267d;
    --size-sm: 1.2rem;
    --size-md: 1.6rem;
    --size-lg: 2.0rem;
    --size-xl: 2.6rem;
    --size-xxl: 4.2rem;
    --font: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
    --font-title: "Poiret One", serif;
    --gutter-base: 10px;
    --contents-side-gutter: calc(var(--gutter-base)*2);
    --section-gutter: calc(var(--gutter-base)*8);
    --section-gutter-pc: calc(var(--gutter-base)*10);
}

html {
    font-size: 62.5%;
}

body {
    color: var(--text-color);
    font-size: var(--size-md);
    line-height: 1.75;
    font-family: var(--font);
    box-sizing: border-box;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
}

.center {
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: block;
    width: 70%;
    max-width: 500px;
    line-height: 4;
    text-align: center;
    background: linear-gradient(to right, #eacbff, #00267d);
    color: #fff;
    margin-left: auto;
    margin-right: auto;
    transition: 0.4s;
    position: relative;
    border-radius: 10px;
    font-size: var(--size-lg);
}

.btn::after {
    content: '';
    width: 10px;
    height: 10px;
    border-top: 3px solid #fff;
    border-right: 3px solid #fff;
    transform: rotate(45deg) translateY(-50%);
    position: absolute;
    top: 50%;
    right: 20px;
    border-radius: 1px;
    transition: 0.3s ease-in-out;
}

.pc {
    display: none;
}

/*======================
背景
======================*/
.contents {
    position: relative;
}

.contents::before {
    content: "";
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: url("../img/mv_bg.jpg") center/cover no-repeat;
    z-index: -10;
}

.contents::after {
    content: "";
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(255, 255, 255, 0.7);
    z-index: -1;
}

/*======================
box
======================*/
.box {
    background: url("../img/mv_bg.jpg") center/cover no-repeat;
    padding: 10% 2.5% 3%;
}

.box .box_inner {
    background: #fff;
    padding: 10% 3% 5%;
    position: relative;
    margin-bottom: 3%;
}

.box .box_title {
    width: 80%;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateY(-50%) translateX(-50%);
    -webkit-transform: translateY(-50%) translateX(-50%);
}

.box .box_btn {
    background: #ebf2ff;
    padding: 3%;
    padding-right: 0;
    margin-top: 3%;
}

/*======================
フッター
======================*/
footer {
    background-color: rgba(var(--bg-color-rgb), 0.9);
    padding: var(--gutter-base) 0;
}

footer small {
    display: block;
    text-align: center;
}

/* ===============ここからmin-width:750px=============== */
@media screen and (min-width:750px) {

    .btn {
        font-size: var(--size-xl);
    }

    .btn:hover {
        background: linear-gradient(to right, #97eaff, #eacbff);
        color: var(--main-color);
    }

    .pc {
        display: block;
    }

    .sp {
        display: none;
    }

    main {
        max-width: 750px;
        margin: 0 auto;
    }
}

/* ===============ここまでmin-width:750px=============== */