/* 変数を使用 */

:root {
    --font-size-base: 18px;
    --font-size-small: calc(var(--font-size-base) * 0.8);
    --font-size-medium: calc(var(--font-size-base) * 1.2);
    --font-size-large: calc(var(--font-size-base) * 1.6);
    --font-size-large2: calc(var(--font-size-base) * 2.5);

    --color-main: #2777cc;
    --color-sidemenu: #d1d1cf81;
    --background-color: #f6f6f6;
    --background-color: #f6f6f6;
    --font-color-B: #333;
    --font-color-W: #F4F4F4;

    --base-unit: var(--font-size-base);

    --margin-base: calc(var(--base-unit) / 2);
    --margin-l: calc(var(--base-unit));
    --margin-ll: calc(var(--base-unit) * 2.5);

    --padding-base: calc(var(--base-unit));
    --padding-l: calc(var(--base-unit) * 2);
    --padding-ll: calc(var(--base-unit) * 10);
}

* {
    box-sizing: border-box !important;
}

body {
    font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", Meiryo, sans-serif;
    font-size: calc(var(--font-size-base) * .091vw);
    color: #333;
    background-color: var(--background-color);
    line-height: 170%;
}


img {
    max-width: 100%;
    height: auto;
    margin: 0 auto 1rem auto;
}

li,
p,
h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: var(--font-size-base);
    margin: 0 0 1.5rem 0;
}

h1 {
    font-size: var(--font-size-large);
    line-height: 180%;
}

h1.title {
    background-color: #002a54;
    color: #ffffff;
    text-align: center;
    padding: 1.2rem 0.8rem 0.8rem 0.8rem;
    border-radius: 5px;
}

h2 {
    font-size: var(--font-size-large);
    margin: 3rem 0 1.5rem 0;
    line-height: 150%;
}

h2:first-child {
    margin: 0rem 0 1.5rem 0;
}

h3 {
    margin: 2rem 0 1.5rem 0;
}

p {
    text-align: left;
    margin: 0 0 1.5rem 0.5rem;
}

ul {
    list-style-position: inside !important;
    list-style: disc;
    margin: 0 0 1.5rem 0;
}

li {
    padding: auto;
    margin: 0 0 0.7rem 0.5rem;
}

li h4 {
    display: inline-block;
    margin: 0 0 0.5rem 0;
}

a {
    text-decoration: none;
    font-weight: bold;
}

#header,
#page {
    max-width: 800px;
}

#header {
    width: 100%;
    margin: 0 auto;
    padding: 0 0 1rem 0;
    text-align: center;
    background-color: #ffffff;
}

#header h1 {
    margin: 2rem;
}

#header p {
    margin: 3rem;
}

#header img {
    padding: 0 !important;
}

#topMenu {
    width: 100%;
    display: none;
}

#topMenu ul {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0;
    list-style-type: none;
}

#topMenu ul li a {
    display: block;
    min-width: 8rem;
    padding: 0.5rem 2rem;
    border-right: solid 1px #ddd;

}

#topMenu ul li:first-child a {
    border-left: solid 1px #ddd;
}

#page {
    margin: 0 auto;
    background-color: #fff;
    display: block;
    justify-content: center;
    align-items: stretch
}


#main {
    max-width: 800px;
    background-color: var(--background-color2);
    padding: 2rem;
    margin: 0;
}

#main>div,
#sideMenu>div {
    margin: var(--margin-l);
}

#sideMenu {
    max-width: 100px;
    margin: 0;
    background-color: var(--color-sidemenu);
}

.ifSmaho {
    display: block;
}

.amazonList li a {
    font-weight: bold;
}

a[href="#top3"] {
    font-size: var(--font-size-base);
    position: fixed;
    bottom: 20px;
    right: 30px;
    text-align: center;
    background-color: #002a54;
    color: white;
    padding: 0.5rem 0.8rem;
    text-decoration: none;
    border-radius: 15px;
}

a[href="#top3"]:hover {
    background-color: #555;
}

/* レスポンシブデザイン PC用*/
@media screen and (min-width: 500px) {

    #page {
        display: flex;
    }

    .ifSmaho {
        display: none;
    }
}