* {
    box-sizing: border-box;
    font-family: "Poppins", "Noto Sans JP", sans-serif;
}

.container {
    width: min(1024px, 90%);
    margin: 0 auto;
}

.date {
    text-align: right;
}

.date span {
    display: inline-block;
    padding: 0.5em 1.5em;
    ;
    border: 1px solid indigo;
    border-radius: 100px;
}

ul {
    padding: 0;
    list-style: none;
}

li a {
    padding: 1em;
    display: block;
    text-decoration: none;
    color: inidigo;
    border-bottom: 1px solid lightgray;
    overflow: hidden;
}

li a:hover {
    background: indigo;
    color: #fff;
}

li a {
    position: relative;
}

li a::after {
    content: '\f019';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translate(100%, -50%);
    transition: 0.5s;
    width: 1.5lh;
    height: 1.5lh;
    padding: 1em;
    display: flex;
    justify-content: center;
    align-items: center;
}

li a:hover::after {
    transform: translate(0, -50%);
}

body {
    background: radial-gradient(cyan 20%, transparent 20%) 0 0/6px 6px, radial-gradient(cyan 20%, transparent 20%) 3px 9px/6px 6px;
}

canvas#canvas3d {
    height: 3lh !important;
    width: unset !important;
    aspect-ratio: 1/2 !important;
    filter: brightness(1.3);
    position: absolute;
    transform: translate(-5%, -50%);
    top: 50%;
    left: 0;
}

h1 {
    display: flex;
    align-items: center;
    gap: 0.5em;
    position: relative;
    /* margin-top: 1.5em; */
    padding-left: 0.8lh;
    height: 3lh;
}

canvas {
    cursor: grab;
}

canvas:active {
    cursor: grabbing;
}

.modal {
    inset: 0;
    margin: auto;
    background: #fff;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    z-index: 9999;
}

.spinner {
    border: 10px solid #f3f3f3;
    border-radius: 50%;
    border-top: 10px solid #3498db;
    width: 5vw;
    aspect-ratio: 1;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg)
    }
    100% {
        transform: rotate(360deg)
    }
}

.date span {
    background: #fff;
}

body {
    margin: 0;
}

header.scroll {
    position: sticky;
    top: 0;
    width: 100%;
    background: radial-gradient(cyan 20%, transparent 20%) 0 0/6px 6px, radial-gradient(cyan 20%, transparent 20%) 3px 9px/6px 6px;
    background-color: #fff;
    z-index: 9999;
}

span.h1-first-letter {
    font-size: 1lh;
    color: slateblue;
    letter-spacing: -0.1em;
}

h1>span {
    display: inline-block;
    line-height: 2.5;
    align-items: center;
}

@media(max-width:781px) {
    h1>span {
        line-height: 1.2;
        word-break: break-all;
        font-size: 0.8em
    }
    h1 {
        padding-left: 1.1lh;
    }
}