#article-main {
    margin: auto;
    padding: 1rem 0;
    line-height: 175%;

    > header {
        margin: auto;
        text-align: center;
        color: #6c7a89;

        h1 {
            font-size: 2.5rem;
            color: #fff;
            line-height: 125%;
            padding: 0 1em;

            small {
                display: block;
                font-size: 1.5rem;
            }
        }

        small {
            font-size: 1rem;
        }
    }

    > #article-body {
        margin-top: 2rem;
    }

    > #article-body,
    .markdown-body {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;

        .drop {
            font-size: 1rem;
            max-width: var(--design-width);
            width: 100%;
            margin: 0 auto;
            color: #6c7a89;
            background: #01010c radial-gradient(at bottom center, #00101f, #000614, #01010c) no-repeat;
            box-shadow: 0 1px 1rem #000;
            border-radius: .5rem;
            border: solid 2px #00101f;
            padding: 0 1rem;

            summary ~ * {
                left: 0;
                right: 0;
            }

            &.down {
                summary ~ * {
                    top: 3em;
                }
            }

            &.up {
                summary ~ * {
                    bottom: 3em;
                }
            }

            nav {
                padding: .5rem;

                ul,
                ol {
                    padding-left: 2rem;
                    line-height: 150%;
                    margin: 0;

                    a {
                        padding: .2rem 0;
                        background: none;
                    }

                    li + li {
                        margin-top: 0;
                    }
                }
            }
        }

        .table-of-contents {
            margin: 2rem auto;
            line-height: 150%;
            max-width: var(--design-width);
            width: 100%;
            font-size: .8em;

            ol {
                padding-left: 1rem;
            }

            li + li {
                margin: 0;
            }
        }

        > h2,
        > h3,
        > h4,
        > h5,
        > h6 {
            max-width: var(--design-width);
            width: 100%;
            margin: 1rem auto;
            text-align: left;
            gap: .5rem;
            padding-bottom: .2rem;
            position: relative;

            .heading-permalink {
                position: absolute;
                top: 0;
                right: 0;
                font-size: .75rem;
            }
        }

        > h2 {
            font-size: 2.25rem;
            color: #ff6347;
            border-bottom: solid 1px #ff6347;
        }

        > h3 {
            font-size: 2rem;
            color: #ff8c00;
            border-bottom: solid 1px #ff8c00;
        }

        > h4 {
            font-size: 1.75rem;
            color: #ffa500;
            border-bottom: dotted 1px #ffa500;
        }

        > h5 {
            font-size: 1.5rem;
            color: #ffd700;
        }

        > h6 {
            font-size: 1.25rem;
            color: #ffff00;
        }

        hr {
            max-width: var(--design-width);
            width: 100%;
            border: none;
            height: 1px;
            background: linear-gradient(to right, #030712 0%, #030712 20%, #1a1f33 50%, #030712 80%, #030712 100%);
            margin: 1em auto;
        }

        ol,
        ul {
            max-width: var(--body-width);
            width: 100%;
            margin: auto;

            li {
                text-align: justify;
            }

            li + li {
                margin-top: .5em;
            }
        }

        > p {
            text-align: justify;
            max-width: var(--body-width);
            width: 100%;
            margin: auto;
        }

        pre.shiki {
            font-size: .8em;
            line-height: 175%;
            overflow: auto;
            border: solid 2px #112;
            border-radius: .5rem;
            max-width: var(--design-width);
            width: 100%;
            max-height: 80vh;
            margin: 1em auto;
            background: rgb(13, 13, 23) !important;

            > code {
                font-family: 'TypoPRO Fantasque Sans Mono';
                counter-reset: step;
                counter-increment: step 0;

                .line::before {
                    user-select: none;
                    content: counter(step);
                    counter-increment: step;
                    width: 3rem;
                    margin-right: 1rem;
                    display: inline-block;
                    text-align: right;
                    color: #6c7a89;
                    padding-left: .5rem;
                    padding-right: .5rem;
                    background-color: #112;
                }
            }
        }

        :not(pre.shiki):not(h2):not(h3):not(h4):not(h5):not(h6) {
            code {
                font-family: 'TypoPRO Fantasque Sans Mono';
                background-color: #000;
                color: #aaa;
                font-size: .8em;
                border: solid 1px #223;
                padding: .2rem;
                border-radius: .25rem;
            }
        }

        strong {
            color: #fff;
            font-weight: 900;
        }

        sup {
            line-height: 100%;
            margin-left: .2rem;
        }
    }

    > footer {
        font-size: 1rem;
        color: #6c7a89;
        background: #01010c radial-gradient(at bottom center, #00101f, #000614, #01010c) no-repeat;
        box-shadow: 0 1px 1rem #000;
        border-radius: .5rem;
        border: solid 2px #00101f;
        padding: .5rem 1rem;
        margin: 1rem auto;
        max-width: var(--design-width);
        text-align: center;
        line-height: 175%;

        aside + aside {
            padding-top: 1rem;
        }

        details {
            summary {
                text-align: left;
                cursor: pointer;
                display: block;
            }
        }

        h3 {
            color: #fff;
        }

        .two-columns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: .5rem 1rem;

            h4 {
                text-align: right;
            }

            div {
                text-align: left;
            }
        }
    }
}

blockquote {
    border-left: 4px solid #60a5fa;
    padding: 0.5rem 1rem;
    margin: 1rem auto;
    color: #e4f1fe;
    background-color: #021127;
    text-align: justify;
    max-width: var(--design-width);
    width: 100%;
    border-radius: .5rem;

    p + p {
        padding-top: 1rem;
    }
}