:root{
    --mainColor:#ffbb99;

    --headerHeight:64px;
    --headerBgCol:#333;

    --navWidth:200px;

    --artHeight:calc(80vh - var(--headerHeight));
    --artSrc:url("img/art_001.jpg");

    --linkWidth:150px;
    --linkHeight:60px;
}

body{
    margin: 0 0 100px 0;
    padding: 0;

    color: #fff;
    font-family: "Helvetica Neue",
    Arial,
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    Meiryo,
    sans-serif;

    background-color: black;
}
a{
    color: #ff66bb;
    user-select: none;
}


header{
    margin: 0;
    width:100%;
    height: var(--headerHeight);

    text-align: center;

    background-color: var(--headerBgCol);
}
h1{
    margin: 0;
    padding: 0;
}
header .logo{
    margin-top: calc(var(--headerHeight) * 0.1);
    width: auto;
    height: calc(var(--headerHeight) * 0.8);
}

/* hanbaga
#navSwitchLabel{
    position: absolute;
    top: 0px;
    left: 0px;
    cursor: pointer;
}
#navSwitchLabel > img{
    margin: calc(var(--headerHeight) * 0.15);
    width: calc(var(--headerHeight) * 0.7);
}
#navSwitch{
    display: none;
}
#navSwitch:checked + nav{
    left: 0px;
    transition: 0.5s;
}
nav{
    display: flex;
    flex-flow: column;
    position: absolute;
    left: calc(var(--navWidth) * -1);
    top: var(--headerHeight);
    transition: 0.5s;

}
nav > a{
    display: block;
    width: var(--navWidth);
    height: 3em;
    margin: 0 0 0.5em 0;

    color: #fff !important;
    font-size: 1.5rem;
    font-weight: 800;
    text-align: center;
    text-decoration: none;
    line-height: 3em;
    letter-spacing: 0.1cap;

    background-color: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(6px);
}
*/

#art{
    display: flex;
    align-items: flex-end;
    flex-direction: row-reverse;
    width: 100%;
    max-width: 720px;
    min-height: 600px;
    max-height: 80vh;
    height: var(--artHeight);
    z-index: 0;

    margin-left: auto;
    margin-right: auto;
    margin-bottom: calc(100vh - var(--artHeight) - var(--headerHeight));

    background-image: var(--artSrc);
    background-repeat: no-repeat;
    background-position: 50% 65%;
    background-size: auto 125%;

}
#art section{
    display: block;
}
#art a{
    display: flex;
    justify-content: center;
    align-items: center;

    width: var(--linkWidth);
    height: var(--linkHeight);
    margin: 20px;

    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(6px);
}
#art a > img{
    display: block;
    width: 80%;
    height: auto;
}

article{
    width: 90vw;
    max-width: 36em;
    margin: 0 auto;
	margin-bottom: 8rem;
    padding: 0.5em 0;
    color: #fff;
    border-radius: 12px;
    background-color: #1c1c1e;
}
article h3{
	font-size: 1.5rem;
    margin: 0 1rem;
}
article>p{
	font-size: 1.3rem;
    margin: 0 1rem;
}
article img{
	margin-bottom: 1rem;
	width: 100%;
}
article .bt{
	border-radius: 0.75rem;
	border: solid 2px #fff;
	display: block;
	font-size: 1.7rem;
	margin: 1rem auto;
    margin-bottom: 1.5rem;
	padding:0.5rem 1rem;
	text-decoration: none;
    text-align: center;
	width: fit-content;
}

body>p{
    margin: 1rem auto;
    text-align: center;
}
body>p a{
    display: block;
    width: 70vw;
    max-width: 8em;
    margin: 0 auto 1.5rem auto;
    padding: 0.5rem 0;

    font-size: 2rem;
    font-weight: bold;
    text-decoration: none;

    border-radius: 10px;
    background-color: #222;

    transition: transform 0.1s;
}
body>p a:active{
 transform: scale(0.95);
 background-color: #666;
}

hr{
    margin: 10vh 0;
}

h2{
    margin: -3rem auto 0.5em auto;
    font-size: 2rem;
    text-align: center;
    font-weight: 800;
    line-height: 1cap;
}
h2 small{
    font-size: 1rem;
    font-weight: normal;
}
nav{
    text-align: center;
}
nav a{
    display: block;
    width: 8em;
    height: 2em;
    margin:0 auto 0.5em auto;

    color: #fff !important;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    line-height: 2em;
    letter-spacing: 0.1cap;

    
    border-radius: 10px;
    background-color: #222;

    transition: transform 0.1s;
}
nav a:active{
 transform: scale(0.95);
 background-color: #666;
}