@charset "utf-8";

/*reset*/
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
    display: block;
}

body {
    font-family: 'Noto Sans JP', "ヒラギノ角ゴPro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, Osaka, "MS Pゴシック", "MS PGothic", sans-serif;
    line-height: 1;
    width: 100%;
    -webkit-text-size-adjust: 100%; /*スマホのブラウザでのフォントサイズの自動調整を無効化*/
    -webkit-font-smoothing: antialiased; /*フォントのスムージング*/
    -moz-osx-font-smoothing: grayscale; /*フォントのスムージング*/
    display: block; /*IE6のインラインブロック要素の余白のバグを解消*/
}
body {
    background-color: #036535;
}
* {
    box-sizing: border-box; /*要素の幅と高さにborderとpaddingを含める*/
}
ol, ul {
    list-style: none;
}
/*ブロッククオート(転載・引用元)*/
blockquote, q {
    quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}
a {
    text-decoration: none;
    color: inherit;
}
.container-fluid {
    width: 95%;
    max-width: 100%;
    margin: 0 auto;
}
.container-sm {
    width: 98%;
    max-width: 540px;
    margin: 0 auto;
}
.container-md {
    width: 98%;
    max-width: 720px;
    margin: 0 auto;
}
.container-lg {
    width: 95%;
    max-width: 960px;
    margin: 0 auto;
}
.container-xl {
    width: 95%;
    max-width: 1140px;
    margin: 0 auto;
}

/*画像のフルード化*/
img {
    max-width: 100%;
    height: auto;
}
/*マージン（top）*/
.mt-0 {
    margin-top: 0;
}
.mt-10 {
    margin-top: 0.625rem;
}
.mt-20 {
    margin-top: 1.25rem;
}
.mt-30 {
    margin-top: 1.875rem;
}
.mt-40 {
    margin-top: 2.5rem;
}
.mt-50 {
    margin-top: 3.125rem;
}
/*マージン（bottom）*/
.mb-0 {
    margin-bottom: 0;
}
.mb-10 {
    margin-bottom: 0.625rem;
}
.mb-20 {
    margin-bottom: 1.25rem;
}
.mb-30 {
    margin-bottom: 1.875rem;
}
.mb-40 {
    margin-bottom: 2.5rem;
}
.mb-50 {
    margin-bottom: 3.125rem;
}
/*テキスト*/
.text-left {
    text-align: left;
}
.text-center {
    text-align: center;
}
.text-right {
    text-align: right;
}
.text-justify {
    text-align: justify;
}

/*flexbox（レスポンシブ対応）*/
.btns {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.main-body {
    background-color: #fff;
    border-radius: 30px;
    margin: 30px;
    padding-bottom: 100px;
}
.introduction-image {
    display: flow-root;
}
.introduction-image img {
    display: block;
    width: calc(100% - 40px);
    max-width: 800px;
    margin: 40px auto 60px;
}
.anniversary-logo {
    width: 200px;
    max-width: 100%;
    margin-bottom: 2rem;
    animation: fade-in 1.2s ease-in-out 6.4s both;
}
.anniversary-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 360px;
    text-align: center;
}
.anniversary-opening,
.anniversary-copy {
    color: #036535;
    font-size: 28px;
    font-weight: 700;
}
.anniversary-opening {
    position: absolute;
    top: 50%;
    left: 50%;
    width: calc(100% - 32px);
    margin: 0;
    transform: translate(-50%, -50%);
    animation: opening-stage 3s ease-in-out both;
}
.anniversary-copy {
    margin-bottom: 2rem;
    animation: fade-in 1.2s ease-in-out 3.2s both;
}
@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes opening-stage {
    0% {
        opacity: 0;
    }
    25%, 65% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}
@media (prefers-reduced-motion: reduce) {
    .anniversary-logo,
    .anniversary-copy,
    .anniversary-opening {
        animation: none;
    }
    .anniversary-opening {
        position: static;
        width: auto;
        margin: 0 16px 1rem;
        transform: none;
    }
}
.another-section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 100px 0 100px;
}
.another-section p {
    font-family: 'Noto Serif JP', serif;
    font-weight: 600;
    line-height: 1.8;
    margin-bottom: 1rem;
}
.final-message {
    border: 1px dotted #000;
    padding: 1rem;
    width: calc(100% - 200px);
    margin: 50px auto 0;
    line-height: 1.8;
    max-width: 800px;
}
@media (max-width: 600px) {
    .main-body {
        margin: 16px;
        border-radius: 16px;
        padding-bottom: 40px;
    }
    .introduction-image img {
        width: calc(100% - 24px);
        margin: 24px auto 36px;
    }
    .anniversary-logo {
        width: 160px;
        margin-bottom: 1.25rem;
    }
    .anniversary-content {
        min-height: 300px;
    }
    .anniversary-opening,
    .anniversary-copy {
        font-size: 22px;
        line-height: 1.5;
    }
    .anniversary-copy {
        margin: 0 16px 1.5rem;
    }
    .another-section {
        padding: 0 24px;
    }
    .final-message {
        width: calc(100% - 48px);
        margin: 32px auto 0;
        padding: 12px;
        font-size: 14px;
    }
}