:root {
    --link-color: #3056a9;
    --italic-color: #001265dd;
    --bold-color: #2f2f2f;
    --border-color: #00000033;

    --gray: #dddddd;
    --lightgray: #efefef;
    --darkgray: #a6a6a6;
    --darkgreen: #206701;

    --warn: #ba1323;
    --warn-bg: #dc35452f;
}

body {
    font-family: sans-serif;
    font-size: 1.05em;
    width: 85vw;
    margin: 0 auto;
}

#main {
    display: flex;
    margin-bottom: 5vh;
}

#contents {
    padding-right: 25px;
    width: 680px;
    height: fit-content;
    position: sticky;
    top: 4ch;
}
#contents a {
    margin-top: 5px;
    text-wrap: nowrap;
    white-space: nowrap;
}
#contents::before {
    content: '';
    height: 100%;
    width: 55px;
    background: linear-gradient(90deg, #ffffff00 0%, #ffffff 100%);
    position: absolute;
    top: 0;
    right: 25px;
    pointer-events: none;
}

a {
    color: var(--link-color);
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 100ms ease-in-out, color 100ms ease-in-out;
}
a:hover {
    color: white;
    background-color: var(--link-color);
}

h1, h2, h3, h4, h5 {
    font-family: serif;
}
h1 {
    margin-bottom: 1ch;
}
h2, h3, h4, h5 {
    margin-top: 1ch;
}

.underline, h1, h2 {
    border-bottom: 1px solid var(--border-color);
}

.block {
    display: block;
}

blockquote {
    margin: 0;
}

p {
    margin-top: 1.4ch;
}

em {
    color: var(--italic-color);
}
strong {
    color: var(--bold-color);
}

header {
    width: 100%;
    margin: 30px 0;
    display: flex;
    align-items: center;
    gap: 42px;
}
header img {
    height: 2em;
}
header form input {
    padding-right: 0.3em;
    padding-left: 0.3em;
    border: 1px solid var(--border-color);
}
header form button {
    background: none;
    border: 1px solid var(--border-color);
    border-left: none;
    cursor: pointer;
    padding-right: 0.5em;
    padding-left: 0.5em;
    transition: background-color 100ms ease-in-out;
}
header form input, header form button {
    padding-bottom: 0.2em;
    padding-top: 0.2em;
}

header form button:hover {
    background-color: var(--gray);
}

#disclaimer {
    color: var(--warn) !important;
    background: var(--warn-bg) !important;
    border: 1px solid var(--warn) !important;
    border-radius: 15px;
    padding: 0 30px 15px;
    margin-bottom: 30px;

    position: relative;
}
#disclaimer em, #disclaimer strong, #disclaimer span {
    color: var(--warn) !important;
}
#disclaimer .exit {
    position: absolute;
    top: 3px;
    right: 20px;

    font-size: 2em;

    cursor: pointer;
    user-select: none;
}

.display-none {
    display: none;
}

.link-list > a {
    display: block;
}

p > code, span > code, ul > code, ol > code, li > code, h1 > code, h2 > code, h3 > code, h4 > code {
    padding: 1px 4px;
    border-radius: 5px;
    color: var(--darkgreen);
    background-color: var(--lightgray);
    border: 1px solid var(--gray);
}
pre {
    padding: 10px 15px;
    border-radius: 15px;
    background-color: var(--gray);
    border: 1px solid var(--darkgray);
    margin-top: 15px;
}

main img, main svg {
    max-width: 75%;
    border: 2px solid var(--darkgray);
    box-shadow: 0 0 10px 3px #00000034;
    margin: 1ch 0;
    padding: 1ch;
    border-radius: 10px;
}

#last-edited-target {
    opacity: 0.6;
    font-style: italic;
}

@media screen and (max-width: 768px) {
    #main {
        flex-direction: column;
    }
}