/* All */

* {
    color: #333;
    box-sizing: border-box;
    font-family: "游ゴシック体", "YuGothic", "游ゴシック", "Yu Gothic", "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", "Meiryo", sans-serif;
}

.fade {
    transition: all 2000ms;
    opacity: 0;
    visibility: hidden;
    transform: translate(0px, 50px);
}

.fadein {
    opacity: 1;
    visibility: visible;
    transform: translate(0px, 0px);
}

h1 {
    font-size: 3vw;
    line-height: 1.3;
    letter-spacing: 0.2rem;
    font-weight: 900;
    text-align: center;
    width: 80%;
    margin: 0 auto;
}

h2 {
    font-size: 2.3vw;
    line-height: 1.3;
    letter-spacing: 0.2rem;
    font-weight: 600;
    text-align: center;
}

h3 {
    font-size: 1.5vw;
    line-height: 1.3;
    letter-spacing: 0.2rem;
    font-weight: 600;
    text-align: center;
    margin-top: 20px;
}

p {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0.1rem;
    margin-top: 20px;
}

body {
    padding-bottom: 50px;
}

/* sections */

.divider {
    width: 100%;
    height: 10px;
    background-color: #EEE;
}

header {
    display: flex;
    align-items: center;
    padding: 20px;
    width: 100%;
    position: fixed;
    right: 0;
    top: 0;
    z-index: 2;
    background-color: white;
}

.top_icon {
    height: 60px;
}

.corp_icon {
    width: 100px;
}

.btn {
    margin-left: auto;
    border-radius: 4px;
    border: transparent;
    background-color: rgb(29, 205, 0);
    color: white;
    padding: 16px 32px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 900;
    letter-spacing: 0.1rem;
    box-shadow: 0px 4px 24px 0px rgb(0 0 0 / 14%);
}

.btn:hover {
    opacity: 0.8;
}

.center {
    margin-left: 0;
}

.section {
    padding: 100px 0;
    display: flex;
    align-items: center;
    flex-direction: column;
}

/* hero */

.hero {
    position: relative;
    background-image: url("../img/satei/hero.jpg");
    background-size: cover;
    height: 800px;
    width: 100%;
    padding-top: 170px;
}

.hero::before {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    content: ' ';
    background-color: rgba(255, 255, 255, 0.6);
}

.hero .message {
    position: absolute;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.hero .exp {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 40px auto;
}

.hero p {
    margin-top: 30px;
    max-width: 800px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    padding: 20px;
}

/* explanation */

/* items & item */

.items {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0 1%;
    margin-top: 60px;
}

.item {
    border-radius: 10px;
    padding: 30px;
    margin: 1%;
    width: 30%;
    background-color: #F3F3F3;
    box-shadow: 0px 4px 10px 0px rgb(0 0 0 / 14%);
}

.item img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

/* reason */

/* present */

.present h1 {
    width: 80%;
    padding-bottom: 20px;
}

.present .full_image {
    margin-top: 30px;
    width: 80%;
    max-width: 800px;
}

.present .items .item {
    width: 40%;
}

.present .items .item img {
    height: 300px;
}

/* purpose */

.purpose .h1 {
    margin-top: 20px;
    width: 80%;
}

.purpose .contents {
    position: relative;
    margin-top: 50px;
}

.purpose .contents img {
    position: relative;
    width: 100%;
}

.purpose .contents .message {
    position: absolute;
    top: 22%;
    left: 22%;
    width: 55%;
}

.purpose p {
    font-size: 16px;
}

/* voc */

.voc {
    position: relative;
    background-image: url("../img/satei/5.jpg");
    background-size: cover;
    height: 1200px;
}

.voc::before {
    background-color: rgba(255, 255, 255, 0.3);
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    content: ' ';
}

.voc .message {
    position: absolute;
    padding: 0 10%;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.voc .voice {
    border-radius: 8px;
    width: 70%;
    background-color: rgba(255, 255, 255, 0.8);
    margin: 40px 0 20px;
    padding: 30px 50px;
}

.voc .left {
    margin-right: 30%;
}

.voc .right {
    margin-left: 30%;
}

.voice .voc_title {
    font-weight: 800;
    font-size: 20px;
    margin-top: 0;
}

/* footer */

footer {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    width: 60%;
    margin: 0 auto;
    padding: 50px 0 30px 0;
}

footer li {
    list-style: none;
    margin-top: 20px;
}

footer a {
    text-decoration: none;
    font-size: 14px;
}

footer .copy {
    width: 100%;
    margin-top: 40px;
    padding-top: 20px;
    font-size: 12px;
    text-align: right;
    border-top: 1px solid #AAA;
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 6vw;
        width: 90%;
    }
    h2 {
        font-size: 5vw;
    }
    h3 {
        font-size: 5vw;
    }
    p {
        font-size: 4vw;
    }
    .hero {
        height: 720px;
        padding-top: 150px;
    }
    .hero p {
        max-width: 90%;
    }
    .section {
        padding: 60px 0;
    }
    .items {
        flex-direction: column;
        align-items: center;
        margin-top: 30px;
    }
    .item {
        width: 90%;
        margin: 10px 0;
        padding: 30px;
    }
    .present .items .item {
        width: 90%;
    }
    .voc .left {
        margin-right: 0;
    }
    .voc .right {
        margin-left: 0;
    }
    .voc .voice {
        width: 100%;
        padding: 20px;
    }
    footer {
        width: 80%;
    }
}