@charset "utf-8";
/* CSS Document */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html,
body{
    height:100%;
}

body{
    background:#f7f8fa;
    font-family:
        "Yu Gothic",
        "Hiragino Sans",
        "Noto Sans JP",
        sans-serif;

    display:flex;
    flex-direction:column;

    color:#333;

    width:100%;
    max-width:100%;

    overflow-x:hidden;
}

/* =========================
   ヘッダー
========================= */

header{

    background:
        linear-gradient(
            to bottom,
            #738fa8 0%,
            #325d86 100%
        );

    border-bottom:2px solid #214564;

    padding:24px 40px;
}

.site-title{

    color:#ffffff;

    font-size:1.7rem;

    font-weight:700;

    line-height:1.15;
}

/* =========================
   メイン
========================= */

main{

    flex:1;

    display:flex;

    justify-content:center;

    align-items:center;

    padding:70px 20px;

    position:relative;
}

/* =========================
   ポスター
========================= */

.poster{

    position:relative;

    opacity:0;

    animation:
        revealPoster 3.5s ease-out forwards;

    will-change:transform, opacity;
}

/* グロー効果 */

.poster::before{

    content:"";

    position:absolute;

    top:50%;
    left:50%;

    width:150%;
    height:150%;

    transform:translate(-50%,-50%);

    z-index:-1;

    pointer-events:none;
}

.poster img{

    width:min(90vw, 400px);

    height:auto;

    display:block;

    border-radius:2px;

    box-shadow:
        0 15px 40px rgba(0,0,0,.40);
}

/* =========================
   PC向けアニメーション
========================= */

@keyframes revealPoster{

    0%{
        opacity:0;
        filter:blur(10px);
        transform:scale(0.88);
    }

    40%{
        opacity:.7;
    }

    100%{
        opacity:1;
        filter:blur(0);
        transform:scale(1.02);
    }
}

/* =========================
   モバイル向けアニメーション
   Safari対策
========================= */

@keyframes revealPosterMobile{

    from{
        opacity:0;
        transform:scale(0.95);
    }

    to{
        opacity:1;
        transform:scale(1);
    }
}

/* =========================
   フッター
========================= */

footer{

    width:100%;

    background:
        linear-gradient(
            to bottom,
            #1b5f88 0%,
            #003f63 100%
        );

    color:#ffffff;

    text-align:center;

    padding:50px 20px;
}

footer a,
footer a:visited,
footer a:hover,
footer a:active{

    color:#ffffff;

    text-decoration:none;
}

.privacy{

    font-size:1.15rem;

    font-weight:700;

    margin-bottom:14px;
}

.copyright{

    font-size:1rem;

    font-weight:700;
}

/* =========================
   アクセシビリティ
========================= */

/* スクリーンリーダー用 */

.sr-only{

    position:absolute;

    width:1px;
    height:1px;

    padding:0;
    margin:-1px;

    overflow:hidden;

    clip:rect(0,0,0,0);

    white-space:nowrap;

    border:0;
}

/* リーダーモード対策 */

.accessibility-text{

    position:absolute;

    left:-9999px;

    width:1px;
    height:1px;

    overflow:hidden;
}

/* =========================
   タブレット・スマホ
========================= */

@media (max-width:768px){

    header{
        padding:20px;
    }

    .site-title{
        font-size:1.4rem;
    }

    main{
        padding:40px 15px;
    }

    .poster{

        animation:
            revealPosterMobile 1.5s ease-out forwards;

        -webkit-transform:translate3d(0,0,0);
        transform:translate3d(0,0,0);

        will-change:transform, opacity;
    }

    .poster img{
        width:min(92vw,340px);
    }

    footer{
        padding:35px 15px;
    }

    .copyright{
        font-size:1rem;
    }
}

/* =========================
   スマホ
========================= */

@media (max-width:480px){

    .site-title{
        font-size:1.2rem;
    }

    .privacy{
        font-size:0.9rem;
    }

    .copyright{
        font-size:0.95rem;
    }
}

/* =========================
   ページ内お知らせ用
========================= */

.notice{

    margin-top:50px;

    text-align:center;

    font-size:1.1rem;

    color:#666;

    font-weight:550;
}