@charset "UTF-8";

:root {
    --passages-top-bar-text-color: #181818;
    --passages-top-bar-disabled-color: #747474;
    --passages-top-bar-hover-color: #01684b;
    --passages-top-bar-bg-color: #fbfcfb;
    --passages-top-bar-border-color: #d0d0d0;
    --passages-top-bar-bottom-color: #a1b8b2;
    --passages-top-bar-shadow-color: #a4afa0;
    --passages-top-bar-current-color: #047555;
    --passages-top-bar-nav-border-color: #aaaaaa;
    --passages-top-bar-nav-active-color: #f2fbf4;
    --passages-top-bar-nav-bg-color: #fefefe;
    --passages-top-bar-nav-hover-color: #047555;
    --passages-article-bg-color: #fefeff;
    --passages-article-border-color: #d9d9d9;
    --passages-article-title-color: #007e5a;
    --passages-article-subtitle-color: #060606;
    --passages-article-sub-color: #141414;
    --passages-article-sub-bg-color: #008a63;
    --passages-article-quote-color: #ececec;
    --passages-article-quote-left-color: #618d81;
    --passages-article-link-color: #015f44;
    --passages-article-text-color: #202020;
    --passages-code-bg-color: #eeefee;
    --passages-code-border-color: #c4c4c4;
    --passages-code-selection-color: #cbcbcb;
    --passages-focus-color: #111111;
    --passages-main-bg-image: linear-gradient(to bottom,
            #fafbfa 0%, #fafafa 50%, #fafbfa 100%);
    --passages-img-filter: sepia(0.1) contrast(0.9);
    --passages-img-hover-filter:
        brightness(0) saturate(100%) invert(29%)
        /* --passages-article-filter */
        sepia(99%) saturate(500%) hue-rotate(120deg);
}

:root.scheme-dark {
    --passages-top-bar-text-color: #d4d4d8;
    --passages-top-bar-disabled-color: #888888;
    --passages-top-bar-hover-color: #03c185;
    --passages-top-bar-bg-color: #272727;
    --passages-top-bar-border-color: #4a4b4a;
    --passages-top-bar-bottom-color: #4a4b4a;
    --passages-top-bar-shadow-color: #111111;
    --passages-top-bar-current-color: #03c185;
    --passages-top-bar-nav-border-color: #4a4b4a;
    --passages-top-bar-nav-active-color: #2a2b2a;
    --passages-top-bar-nav-bg-color: #1f1f1f;
    --passages-top-bar-nav-hover-color: #03c185;
    --passages-article-bg-color: #1e1e1e;
    --passages-article-border-color: #4a4b4a;
    --passages-article-title-color: #009f67;
    --passages-article-subtitle-color: #dde2e0;
    --passages-article-sub-color: #e4e4e7;
    --passages-article-sub-bg-color: #03c185;
    --passages-article-quote-color: #272727;
    --passages-article-quote-left-color: #03c185;
    --passages-article-link-color: #13ab6e;
    --passages-article-text-color: #d4d4d8;
    --passages-code-bg-color: #18181b;
    --passages-code-border-color: #4a4b4a;
    --passages-code-selection-color: #333333;
    --passages-focus-color: #eeeeee;
    --passages-main-bg-image: linear-gradient(to bottom,
           #1a1a1a 0%, #18181b 50%, #1a1a1a 100%);
    --passages-img-filter: brightness(0.75);
    --passages-img-hover-filter: brightness(0) saturate(100%) invert(75%)
        sepia(99%) saturate(800%) hue-rotate(90deg);
}

@media (prefers-color-scheme: dark) {
    :root.scheme-default {
        --passages-top-bar-text-color: #d4d4d8;
        --passages-top-bar-disabled-color: #888888;
        --passages-top-bar-hover-color: #03c185;
        --passages-top-bar-bg-color: #272727;
        --passages-top-bar-border-color: #4a4b4a;
        --passages-top-bar-bottom-color: #4a4b4a;
        --passages-top-bar-shadow-color: #111111;
        --passages-top-bar-current-color: #03c185;
        --passages-top-bar-nav-border-color: #4a4b4a;
        --passages-top-bar-nav-active-color: #2a2b2a;
        --passages-top-bar-nav-bg-color: #1f1f1f;
        --passages-top-bar-nav-hover-color: #03c185;
        --passages-article-bg-color: #1e1e1e;
        --passages-article-border-color: #4a4b4a;
        --passages-article-title-color: #009f67;
        --passages-article-subtitle-color: #dde2e0;
        --passages-article-sub-color: #e4e4e7;
        --passages-article-sub-bg-color: #03c185;
        --passages-article-quote-color: #272727;
        --passages-article-quote-left-color: #03c185;
        --passages-article-link-color: #13ab6e;
        --passages-article-text-color: #d4d4d8;
        --passages-code-bg-color: #18181b;
        --passages-code-border-color: #4a4b4a;
        --passages-code-selection-color: #333333;
        --passages-focus-color: #eeeeee;
        --passages-main-bg-image: linear-gradient(to bottom,
               #1a1a1a 0%, #18181b 50%, #1a1a1a 100%);
        --passages-img-filter: brightness(0.75);
        --passages-img-hover-filter: brightness(0) saturate(100%) invert(75%)
            sepia(99%) saturate(800%) hue-rotate(90deg);
    }
}

main {
    border-image: var(--passages-main-bg-image);
}

main>.container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

main>.top-bar {
    position: sticky;
    top: 72px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

main .top-bar nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 1050px;
    height: 36px;
    border: 1px solid var(--passages-top-bar-border-color);
    border-bottom-color: var(--passages-top-bar-bottom-color);
    background-color: var(--passages-top-bar-bg-color);
    box-shadow: none;
    overflow: visible;
}

main .top-bar nav :focus-visible {
    outline: 2px solid var(--passages-focus-color);
    outline-offset: 2px;
    border-radius: 2px;
}

main .top-bar nav>a {
    font-size: 18px;
    margin: 0 10px;
    text-decoration: none;
    color: var(--passages-top-bar-text-color);
    transition: font-weight 0.12s ease;
}

main .top-bar nav>a.disabled {
    color: var(--passages-top-bar-disabled-color);
    cursor: not-allowed;
}

main .top-bar nav>a:not(.disabled):hover {
    font-weight: bold;
    text-decoration: underline;
    color: var(--passages-top-bar-hover-color);
}

main .top-bar nav>a:focus-visible {
    color: var(--passages-top-bar-hover-color);
}

main .top-bar nav>a:first-of-type::before {
    content: "\2190";
}

main .top-bar nav>a:last-of-type::after {
    content: "\2192";
}

main .top-bar details {
    position: relative;
}

main .top-bar summary {
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    font-size: 18px;
    color: var(--passages-top-bar-text-color);
    transition: font-weight 0.12s ease;
}

main .top-bar summary::marker {
    color: var(--passages-top-bar-text-color);
}

main .top-bar summary:hover {
    font-weight: bold;
}

main .top-bar details ul {
    position: absolute;
    margin: 0;
    padding: 0;
    top: 31px;
    left: round(50%, 1px);
    width: fit-content;
    min-width: 100px;
    height: auto;
    max-width: calc(100vw - 0px);
    max-height: calc(100vh - 108px);
    list-style: none;
    overflow: auto;
    border-radius: 6px;
    overscroll-behavior: contain;
    -webkit-transform: translate(round(-50%, 1px));
    transform: translateX(round(-50%, 1px));
    border: 1px solid var(--passages-top-bar-nav-border-color);
    background-color: var(--passages-top-bar-nav-bg-color);
    box-shadow: 1px 2px 3px var(--passages-top-bar-shadow-color);
    animation: fade-in 0.25s ease;
    z-index: 2;
}

main .top-bar details li {
    display: flex;
    justify-content: start;
    align-items: center;
    width: 100%;
    height: 46px;
    padding: 0 18px;
    color: var(--passages-top-bar-text-color);
    font-size: 19px;
    transition: background-color 0.18s ease;
}

main .top-bar details li:not(:last-of-type) {
    border-bottom: 1px solid var(--passages-top-bar-nav-border-color);
}

main .top-bar details li a {
    text-decoration: none;
    padding: 0;
    color: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.18s ease;
}

main .top-bar details li a:hover {
    text-decoration: underline;
}

main .top-bar details li.target-current {
    color: var(--passages-top-bar-current-color);
    background-color: var(--passages-top-bar-nav-active-color);
}

main article {
    width: 1050px;
    min-width: 0;
    border: 1px solid var(--passages-article-border-color);
    border-top: none;
    background-color: var(--passages-article-bg-color);
    border-radius: 0 0 4px 4px;
    margin: 0;
    padding: 10px 14px;
}

main article :focus-visible {
    outline: 2px solid var(--passages-focus-color);
}

main article h1 {
    margin: 0;
    padding: 10px 0 0 0;
    text-align: center;
    color: var(--passages-article-title-color);
    font-size: 30px;
}

main article h2 {
    margin: 10px 0 5px 0;
    padding-top: 8px;
    color: var(--passages-article-subtitle-color);
    font-size: 24px;
    border-top: 1px solid var(--passages-article-border-color);
    scroll-margin-top: 102px;
}

main article h3 {
    position: relative;
    margin: 12px 0 10px 14px;
    font-size: 21px;
    color: var(--passages-article-sub-color);
    scroll-margin-top: 110px;
    line-height: 1.5em;
}

main article h3::before {
    content: "";
    position: absolute;
    display: block;
    left: -12px;
    top: 7px;
    width: 3px;
    height: 20px;
    background-color: var(--passages-article-sub-bg-color);
}

main article p {
    margin: 10px 0;
    padding: 0;
    font-size: 18px;
    letter-spacing: 1px;
    line-height: 1.6em;
    text-indent: 1px;
    color: var(--passages-article-text-color);
}

main article b,
main article strong {
    color: inherit;
    font-weight: bold;
}

main article em,
main article dfn {
    color: inherit;
    font-style: normal;
    font-weight: 500;
}

main article cite {
    color: inherit;
    font-style: normal;
}

main article blockquote {
    margin: 6px 0 6px 8px;
    padding: 4px 8px 4px 12px;
    border-radius: 0 2px 2px 0;
    background-color: var(--passages-article-quote-color);
    border: 1px solid var(--passages-article-border-color);
    border-left: 3px solid var(--passages-article-quote-left-color);
}

main article a {
    font-size: inherit;
    color: var(--passages-article-text-color);
    text-decoration: underline;
    word-break: break-all;
}

main article a:hover {
    text-decoration: none;
}

main article a:focus-visible {
    border-radius: 2px;
}

main article p a {
    font-size: 18px;
    color: var(--passages-article-link-color);
}

main article p a::after {
    content: "\27a4";
}

main article ol {
    margin: 0.3em 0;
    padding: 0;
    padding-left: 2em;
    list-style: decimal;
}

main article ul {
    margin: 0.3em 0;
    padding: 0;
    padding-left: 2em;
    list-style: disc;
}

main article ol li,
main article ul li {
    font-size: 18px;
    color: var(--passages-article-text-color);
    letter-spacing: 1px;
    line-height: 1.6em;
    margin: 5px 0;
}

main article code {
    font-family: "consolas", monospace;
}

main article kbd {
    border-radius: 5px;
    background-color: var(--passages-code-bg-color);
    border: 1px solid var(--passages-code-border-color);
    width: fit-content;
    margin: 0 2px;
    padding: 0 4px;
    font-family: "consolas", "courier new", monospace;
    font-size: 17px;
}

main article :not(pre)>code {
    background-color: var(--passages-code-bg-color);
    padding: 1px 4px;
    border-radius: 4px;
    font-size: 17px;
    color: inherit;
}

main article pre {
    width: fit-content;
    white-space: pre-wrap;
    overflow: auto;
    margin: 10px 1px 10px;
    padding: 10px 12px;
    background-color: var(--passages-code-bg-color);
    border: 1px solid var(--passages-code-border-color);
    border-radius: 4px;
}

main article pre>code {
    white-space: wrap;
    word-wrap: break-word;
    word-break: break-all;
    font-size: 17px;
    line-height: 1.2em;
}

main article pre>code ::selection {
    background-color: var(--passages-code-selection-color);
    color: currentColor;
}

main article img {
    filter: var(--passages-img-filter);
    color: var(--passages-article-text-color);
    font-size: 18px;
}

main article button.scalable {
    padding: 3px;
    border: none;
    background-color: transparent;
    cursor: zoom-in;
    transition: opacity 0.12s ease;
}

main article button.scalable:hover {
    opacity: 0.88;
}

main article button.scalable:focus-visible {
    outline: 3px solid var(--passages-focus-color);
    outline-offset: -3px;
    border-radius: 6px;
    opacity: 0.88;
    filter: sepia(0.22);
}

main article button.scalable img {
    width: 100%;
    height: 100%;
    object-fit: fill;
}

main article .image-card {
    display: grid;
    grid-template-columns: repeat(3, auto);
    max-height: 75vh;
    margin: 8px 0;
    gap: 10px 8px;
    overflow: auto;
}

main article .image-card img {
    width: 100%;
    height: auto;
    border-radius: 3px;
    border: 1px solid var(--passages-article-border-color);
}

main article h2:target a {
    text-decoration: 1px solid underline;
}

main article h2 a,
main article h3 a {
    color: inherit;
    text-decoration: none;
    position: relative;
}

main article h2 a:hover,
main article h3 a:hover {
    text-decoration: 1px solid underline;
}

main article h2 a:focus-visible,
main article h3 a:focus-visible {
    border-radius: 3px;
}

main article h2 a:focus-visible::before,
main article h2 a:hover::before {
    content: "#";
    position: absolute;
    left: -17px;
}

main article .card {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 14px;
}

main article section {
    margin: 4px 0;
    padding: 8px;
}

main article details {
    width: 100%;
    margin-top: 10px;
    padding-left: 12px;
}

main article details summary {
    width: fit-content;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    font-size: 17px;
    margin: 0;
}

main article details summary:focus-visible {
    border: inherit;
    outline-offset: 2px;
    border-radius: 2px;
}

main article details ul {
    margin: 0;
    padding: 0;
    list-style: disc inside;
}

main article details ul li {
    margin: 5px 0;
    font-size: 15px;
    padding-left: 0px;
}

main article details ul li a {
    color: var(--passages-article-title-color);
    text-decoration: underline;
}

main dialog.preview {
    outline: none;
    padding: 4px;
    margin: auto;
    border: none;
    overflow: auto;
    background-color: transparent;
    overscroll-behavior: contain;
    animation: fade-in 0.2s ease;
}

main dialog.preview::backdrop {
    -webkit-backdrop-filter: blur(2px) brightness(0.5);
    backdrop-filter: blur(2px) brightness(0.5);
}

main dialog.preview button {
    display: block;
    width: 100%;
    height: 100%;
    padding: 0;
    border: none;
    background-color: transparent;
    border-radius: 3px;
    color: var(--passages-focus-color);
}

main dialog.preview button:focus-visible {
    outline: 2px solid var(--passages-focus-color);
    outline-offset: 0;
}

main dialog.preview img {
    display: block;
    max-width: calc(100vw - 58px);
    max-height: calc(100vh - 50px);
    border-radius: inherit;
    cursor: zoom-out;
    object-fit: contain;
}

/* 兼容不支持 round 函数的浏览器 */
@supports not (left: round(50%, 1px)) {
    main .top-bar details ul {
        left: 50%;
        -webkit-transform: translateX(-50%);
        transform: translateX(-50%);
    }
}

/* 若支持滚动目标组且不支持交叉观察器，使用 CSS 实现导航高亮功能 */
@supports (scroll-target-group: auto) {
    main .top-bar nav:not(.intersect) {
        scroll-target-group: auto;
    }

    main .top-bar nav:not(.intersect) li:has(a:target-current) {
        font-weight: 400;
        color: var(--passages-top-bar-nav-hover-color);
        background-color: var(--passages-top-bar-nav-active-color);
    }
}

@media (max-width: 1000px) {
    main article .image-card {
        grid-template-columns: repeat(2, auto);
    }

    main .user-comments .tools {
        display: block;
    }
}

@media (max-width: 710px) {
    main aside {
        display: none;
    }
}

@media (max-width: 560px) {
    main article .image-card {
        margin: 0 1%;
        grid-template-columns: auto;
    }
}

@media (max-width: 510px) {
    main article .link-card {
        flex-wrap: wrap;
    }

    main article .link-card a {
        width: 100%;
    }
}

@media (max-width: 300px) {
    main .top-bar nav {
        justify-content: center;
    }

    main .top-bar nav>a {
        display: none;
    }
}

/* 打印时隐藏顶栏和输入框 */
@media print {
    main .top-bar {
        display: none;
    }

    main .user-comments .head button,
    main .user-comments .head a,
    main .user-comments .editor {
        display: none;
    }
}