:root {
    --page-bg: #f7f8fa;
    --content-bg: #ffffff;
    --text-color: #1f2933;
    --muted-color: #64748b;
    --heading-color: #111827;
    --link-color: #2563eb;
    --link-hover-color: #1d4ed8;
    --inline-code-bg: #f4f4f5;
    --code-border: #e4e4e7;
    --border-color: #d1d5db;
    --blockquote-bg: #f1f5f9;
    --blockquote-border: #94a3b8;
    --selection-bg: rgba(37, 99, 235, 0.16);
}

@media (prefers-color-scheme: dark) {
    :root {
        --page-bg: #0b1120;
        --content-bg: rgba(15, 23, 42, 0.9);
        --text-color: #e2e8f0;
        --muted-color: #94a3b8;
        --heading-color: #f8fafc;
        --link-color: #60a5fa;
        --link-hover-color: #3b82f6;
        --inline-code-bg: rgba(148, 163, 184, 0.12);
        --code-border: rgba(148, 163, 184, 0.35);
        --border-color: rgba(148, 163, 184, 0.25);
        --blockquote-bg: rgba(148, 163, 184, 0.16);
        --blockquote-border: rgba(96, 165, 250, 0.55);
        --selection-bg: rgba(96, 165, 250, 0.35);
    }
}

@media all {
    html {
        margin: 0;
        font-family: "Noto Serif SC", "Source Han Serif SC", "Microsoft YaHei", "微软雅黑", STXihei, "华文细黑", "Times New Roman", serif;
        background-color: var(--page-bg);
        color: var(--text-color);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    body {
        font-size: 16px;
        line-height: 1.75;
        color: var(--text-color);
        margin: 0;
        padding: 0 1rem 4rem;
    }
    body::selection,
    body *::selection {
        background-color: var(--selection-bg);
        color: var(--heading-color);
    }
    body #content {
        padding: 3rem 3rem 3.5rem;
        width: min(92%, 860px);
        margin: 3rem auto 0;
        background-color: var(--content-bg);
        border-radius: 18px;
        box-shadow: 0 28px 58px rgba(15, 23, 42, 0.12);
        transition: box-shadow 0.3s ease;
        box-sizing: border-box;
    }
    body #content:hover {
        box-shadow: 0 36px 70px rgba(15, 23, 42, 0.16);
    }
    .utterances-frame {
        padding: 2rem 0 0;
        width: min(92%, 860px);
        margin: 0 auto 4rem;
        background-color: transparent;
    }
    body .title {
        margin: 0 0 1.75rem;
        font-size: clamp(2.3rem, 2.4rem + 0.6vw, 3rem);
        font-weight: 700;
        color: var(--heading-color);
    }
    #org-div-home-and-up {
        position: fixed;
        right: 1.5rem;
        top: 4.5rem;
        font-size: 0.9rem;
        background: rgba(255, 255, 255, 0.75);
        backdrop-filter: blur(4px);
        padding: 0.35rem 0.75rem;
        border-radius: 999px;
        box-shadow: 0 10px 20px rgba(15, 23, 42, 0.1);
        z-index: 90;
    }
    /* TOC inspired by http://jashkenas.github.com/coffee-script */
    #table-of-contents {
        font-size: 0.9rem;
        position: fixed;
        right: 0;
        top: 0;
        background: rgba(255, 255, 255, 0.95);
        line-height: 1.45;
        text-align: left;
        box-shadow: 0 18px 32px rgba(15, 23, 42, 0.14);
        border-radius: 0 0 0 18px;
        border: 1px solid rgba(15, 23, 42, 0.08);
        border-top: none;
        border-right: none;
        max-height: 100vh;
        overflow: auto;
        padding: 1.1rem 1.4rem;
        width: clamp(240px, 24vw, 320px);
        z-index: 95;
        transition: transform 0.25s ease, opacity 0.25s ease, width 0.25s ease, padding 0.25s ease;
        transform: translate3d(0, 0, 0);
        scrollbar-width: thin;
        scrollbar-color: #888 #f1f1f1;
    }
    #table-of-contents::-webkit-scrollbar {
        width: 8px;
    }
    #table-of-contents::-webkit-scrollbar-track {
        background: rgba(0, 0, 0, 0.05);
        border-radius: 10px;
    }
    #table-of-contents::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.2);
        border-radius: 10px;
        transition: background 0.2s ease;
    }
    #table-of-contents::-webkit-scrollbar-thumb:hover {
        background: rgba(0, 0, 0, 0.35);
    }
    @media (prefers-color-scheme: dark) {
        #table-of-contents {
            scrollbar-color: #555 rgba(255, 255, 255, 0.1);
        }
        #table-of-contents::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.05);
        }
        #table-of-contents::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.2);
        }
        #table-of-contents::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.35);
        }
    }
    #table-of-contents.minimized {
        width: auto;
        padding: 0.8rem;
        overflow: visible;
    }
    #table-of-contents.minimized #text-table-of-contents {
        display: none;
    }
    #table-of-contents.minimized h2 {
        margin: 0;
        font-size: 0.9rem;
    }
    #table-of-contents h2 {
        font-size: 1rem;
        max-width: none;
        border: 0;
        font-weight: 600;
        margin: 0 0 0.75rem;
        padding: 0;
        color: var(--heading-color);
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    #toc-minimize-btn {
        cursor: pointer;
        padding: 0.3rem 0.5rem;
        border: none;
        background: rgba(37, 99, 235, 0.1);
        color: var(--link-color);
        border-radius: 6px;
        font-size: 0.85rem;
        font-weight: 500;
        transition: background 0.2s ease, transform 0.1s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
    }
    #toc-minimize-btn:hover {
        background: rgba(37, 99, 235, 0.2);
        transform: scale(1.05);
    }
    #toc-minimize-btn:active {
        transform: scale(0.95);
    }
    #table-of-contents #text-table-of-contents {
        display: block;
        padding: 0;
        margin: 0;
    }
    #toc-toggle {
        position: fixed;
        top: 1.25rem;
        right: 1.25rem;
        z-index: 120;
        display: none;
        align-items: center;
        gap: 0.4rem;
        padding: 0.55rem 1.1rem;
        border-radius: 999px;
        border: 1px solid rgba(37, 99, 235, 0.45);
        background: rgba(37, 99, 235, 0.94);
        color: #ffffff;
        font-size: 0.95rem;
        font-weight: 600;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        cursor: pointer;
        box-shadow: 0 16px 28px rgba(37, 99, 235, 0.28);
        transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    }
    #toc-toggle:hover {
        transform: translateY(-2px);
        box-shadow: 0 20px 34px rgba(37, 99, 235, 0.32);
    }
    #toc-toggle:focus-visible {
        outline: 3px solid rgba(96, 165, 250, 0.65);
        outline-offset: 3px;
    }
    #toc-toggle.is-active {
        background: var(--content-bg);
        color: var(--heading-color);
        border-color: rgba(37, 99, 235, 0.4);
        box-shadow: 0 16px 28px rgba(15, 23, 42, 0.2);
    }
    #toc-toggle svg {
        width: 1rem;
        height: 1rem;
    }
    .toc-ready #toc-toggle {
        display: inline-flex;
    }
    #license {
        /* padding: .3em; */
        /* border: 1px solid gray; */
        background-color: #eeeeee;
    }
    h1 {
        font-size: clamp(2.4rem, 2.5rem + 0.5vw, 3rem);
        padding: 0;
        margin: 0 0 2rem;
        color: var(--heading-color);
    }
    /*
    h2:before {
    content: "* "
    }

    h3:before {
    content: "** "
    }

    h4:before {
    content: "*** "
    }
     */
    h2 {
        font-family: "Lato", "Noto Sans CJK SC", "Microsoft YaHei", "微软雅黑", sans-serif;
        font-size: clamp(1.65rem, 1.6rem + 0.4vw, 2.1rem);
        line-height: 1.35;
        padding: 2.1rem 0 0.8rem;
        margin: 0 0 1.4rem;
        border-bottom: 1px solid var(--border-color);
        color: var(--heading-color);
        position: relative;
    }
    .outline-text-2 {
        margin-left: 0
    }
    h3 {
        font-family: "Lato", "Noto Sans CJK SC", "Microsoft YaHei", "微软雅黑", sans-serif;
        font-size: 1.4rem;
        margin: 2rem 0 1rem;
        color: var(--heading-color);
    }
    /* #A34D32;*/
    .outline-text-3 {
        margin-left: 0;
    }
    h4 {
        font-family: "Lato", "Noto Sans CJK SC", "Microsoft YaHei", "微软雅黑", sans-serif;
        font-size: 1.15rem;
        margin: 1.6rem 0 0.8rem;
        color: var(--heading-color);
    }
    .outline-text-4 {
        margin-left: 0;
    }
    a {
        text-decoration: none;
        font-weight: 500;
        color: var(--link-color);
        transition: color 0.2s ease;
    }
    a:visited {
        text-decoration: none;
        font-weight: 500;
    }
    a:hover {
        color: var(--link-hover-color);
        text-decoration: underline;
    }
    .todo {
        color: #CA0000;
    }
    .done {
        color: #006666;
    }
    .timestamp-kwd {
        color: #444;
    }
    p {
        margin: 0 0 1.4rem;
        font-size: 1rem;
        font-weight: 400;
        max-width: 76ch;
    }
    li {
        margin: 0.35em 0;
        line-height: 1.7;
    }
    ul,
    ol {
        margin: 0 0 1.5rem 1.6rem;
        padding: 0;
    }
    ul ul,
    ul ol,
    ol ul,
    ol ol {
        margin-top: 0.6rem;
        margin-bottom: 0.6rem;
    }
    table {
        margin: 2rem 0;
        border-collapse: collapse;
        width: 100%;
        overflow: hidden;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        background: transparent;
    }
    td,
    th {
        border-width: 0 0 0 0;
        font-size: inherit;
        margin: 0;
        overflow: visible;
        padding: 0.9em 1em;
        border-bottom: 1px solid var(--border-color);
    }
    td:first-child,
    th:first-child {
        border-left-width: 0;
    }
    thead {
        background-color: rgba(37, 99, 235, 0.08);
        color: var(--heading-color);
        text-align: left;
        vertical-align: bottom;
        font-weight: 600;
    }
    td {
        background-color: transparent;
    }
    tr:nth-child(2n-1) td {
        background-color: rgba(15, 23, 42, 0.025);
    }
    code {
        font-size: 0.95rem;
        color: inherit;
        padding: 0.1em 0.35em;
        background-color: var(--inline-code-bg);
        border-radius: 6px;
        border: 1px solid var(--code-border);
    }
    pre code {
        background-color: transparent;
        border: none;
        padding: 0;
        border-radius: 0;
        box-shadow: none;
        font-size: inherit;
        color: inherit;
    }
    img {
        border: none;
        max-width: 100%;
        border-radius: 12px;
        box-shadow: 0 16px 30px rgba(15, 23, 42, 0.12);
        margin: 1.8rem 0;
    }
    figure {
        margin: 2rem 0;
    }
    figcaption {
        font-size: 0.9rem;
        color: var(--muted-color);
        text-align: center;
        margin-top: 0.6rem;
    }
    blockquote {
        margin: 2.2rem 0;
        padding: 1.2rem 1.4rem;
        border-left: 4px solid var(--blockquote-border);
        background: var(--blockquote-bg);
        border-radius: 12px;
        color: var(--text-color);
        font-style: italic;
    }
    hr {
        border: 0;
        height: 1px;
        margin: 3rem 0;
        background: var(--border-color);
    }
    .org-src-container {
        position: relative;
        margin: 2rem 0;
    }
    .org-src-container label.org-src-name {
        position: absolute;
        top: -1.6rem;
        right: 0;
        font-size: 0.75rem;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--muted-color);
    }
    .org-src-container:hover label.org-src-name {
        color: var(--link-color);
    }
    .org-src-container pre {
        margin: 0;
    }
    .example {
        background-color: var(--inline-code-bg);
        border: 1px solid var(--code-border);
        border-radius: 12px;
        padding: 1.25rem 1.5rem;
        margin: 2rem 0;
        font-family: "JetBrains Mono", "Fira Code", "Droid Sans Mono", Consolas, "Lucida Console", monospace;
        font-size: 0.95rem;
        line-height: 1.6;
    }
    kbd {
        display: inline-block;
        padding: 0.15rem 0.5rem;
        border-radius: 6px;
        border: 1px solid var(--code-border);
        background: var(--inline-code-bg);
        box-shadow: inset 0 -1px 0 rgba(15, 23, 42, 0.1);
        font-size: 0.85rem;
        font-family: inherit;
    }
    #footnotes {
        border-top: 1px solid var(--border-color);
        margin-top: 3rem;
        padding-top: 1.5rem;
        color: var(--muted-color);
    }
    #postamble {
        border-top: 1px solid var(--border-color);
        margin-top: 3rem;
        padding-top: 1.5rem;
        color: var(--muted-color);
        font-size: 0.85rem;
    }
    .share img {
        opacity: .4;
        -moz-opacity: .4;
        filter: alpha(opacity=40);
    }
    .share img:hover {
        opacity: 1;
        -moz-opacity: 1;
        filter: alpha(opacity=100);
    }
    pre {
        font-family: "JetBrains Mono", "Fira Code", "Droid Sans Mono", Consolas, "Lucida Console", monospace;
        color: inherit;
        font-size: 0.95rem;
        background-color: var(--inline-code-bg);
        padding: 1.25rem 1.5rem;
        overflow: auto;
        border-radius: 12px;
        border: 1px solid var(--code-border);
        box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.04);
        line-height: 1.6;
    }
    .org-info-box {
        clear: both;
        margin-left: auto;
        margin-right: auto;
        padding: 0.7em;
        /* border:1px solid #CCC; */
        /* border-radius:10px; */
        /* -moz-border-radius:10px; */
    }
    .org-info-box img {
        float: left;
        margin: 0em 0.5em 0em 0em;
    }
    .org-info-box p {
        margin: 0em;
        padding: 0em;
    }
    .builtin {
        /* font-lock-builtin-face */
        color: #f4a460;
    }
    .comment {
        /* font-lock-comment-face */
        color: #737373;
    }
    .comment-delimiter {
        /* font-lock-comment-delimiter-face */
        color: #666666;
    }
    .constant {
        /* font-lock-constant-face */
        color: #db7093;
    }
    .doc {
        /* font-lock-doc-face */
        color: #b3b3b3;
    }
    .function-name {
        /* font-lock-function-name-face */
        color: #5f9ea0;
    }
    .headline {
        /* headline-face */
        color: #ffffff;
        background-color: #000000;
        font-weight: bold;
    }
    .keyword {
        /* font-lock-keyword-face */
        color: #4682b4;
    }
    .string {
        /* font-lock-string-face */
        color: #ccc79a;
    }
    .todo-comment {
        /* todo-comment-face */
        color: #ffffff;
        background-color: #000000;
        font-weight: bold;
    }
    .variable-name {
        /* font-lock-variable-name-face */
        color: #ff6a6a;
    }
    .warning {
        /* font-lock-warning-face */
        color: #ffffff;
        background-color: #cd5c5c;
        font-weight: bold;
    }
    pre.a {
        color: inherit;
        background-color: inherit;
        font: inherit;
        text-decoration: inherit;
    }
    pre.a:hover {
        text-decoration: underline;
    }
    /* Styles for org-info.js */
    .org-info-js_info-navigation {
        border-style: none;
    }
    #org-info-js_console-label {
        font-size: 10px;
        font-weight: bold;
        white-space: nowrap;
    }
    .org-info-js_search-highlight {
        background-color: #ffff00;
        color: #000000;
        font-weight: bold;
    }
    #org-info-js-window {
        border-bottom: 1px solid black;
        padding-bottom: 10px;
        margin-bottom: 10px;
    }
    .org-info-search-highlight {
        background-color: #adefef;
        /* same color as emacs default */
        color: #000000;
        font-weight: bold;
    }
    .org-bbdb-company {
        /* bbdb-company */
        font-style: italic;
    }
    .org-bbdb-name {
        /* bbdb-name */
        text-decoration: underline;
    }
    .org-bold {
        /* bold */
        font-weight: bold;
    }
    .org-bold-italic {
        /* bold-italic */
        font-weight: bold;
        font-style: italic;
    }
    .org-border {
        /* border */
        background-color: #000000;
    }
    .org-buffer-menu-buffer {
        /* buffer-menu-buffer */
        font-weight: bold;
    }
    .org-builtin {
        /* font-lock-builtin-face */
        color: #da70d6;
    }
    .org-button {
        /* button */
        text-decoration: underline;
    }
    .org-c-nonbreakable-space {
        /* c-nonbreakable-space-face */
        background-color: #ff0000;
        font-weight: bold;
    }
    .org-calendar-today {
        /* calendar-today */
        text-decoration: underline;
    }
    .org-comment {
        /* font-lock-comment-face */
        color: #b22222;
    }
    .org-comment-delimiter {
        /* font-lock-comment-delimiter-face */
        color: #b22222;
    }
    .org-constant {
        /* font-lock-constant-face */
        color: #5f9ea0;
    }
    .org-cursor {
        /* cursor */
        background-color: #000000;
    }
    .org-default {
        /* default */
        color: #000000;
        background-color: #ffffff;
    }
    .org-diary {
        /* diary */
        color: #ff0000;
    }
    .org-doc {
        /* font-lock-doc-face */
        color: #bc8f8f;
    }
    .org-escape-glyph {
        /* escape-glyph */
        color: #a52a2a;
    }
    .org-file-name-shadow {
        /* file-name-shadow */
        color: #7f7f7f;
    }
    .org-fringe {
        /* fringe */
        background-color: #f2f2f2;
    }
    .org-function-name {
        /* font-lock-function-name-face */
        color: #0000ff;
    }
    .org-header-line {
        /* header-line */
        color: #333333;
        background-color: #e5e5e5;
    }
    .org-help-argument-name {
        /* help-argument-name */
        font-style: italic;
    }
    .org-highlight {
        /* highlight */
        background-color: #b4eeb4;
    }
    .org-holiday {
        /* holiday */
        background-color: #ffc0cb;
    }
    .org-info-header-node {
        /* info-header-node */
        color: #a52a2a;
        font-weight: bold;
        font-style: italic;
    }
    .org-info-header-xref {
        /* info-header-xref */
        color: #0000ff;
        text-decoration: underline;
    }
    .org-info-menu-header {
        /* info-menu-header */
        font-weight: bold;
    }
    .org-info-menu-star {
        /* info-menu-star */
        color: #ff0000;
    }
    .org-info-node {
        /* info-node */
        color: #a52a2a;
        font-weight: bold;
        font-style: italic;
    }
    .org-info-title-1 {
        /* info-title-1 */
        font-size: 172%;
        font-weight: bold;
    }
    .org-info-title-2 {
        /* info-title-2 */
        font-size: 144%;
        font-weight: bold;
    }
    .org-info-title-3 {
        /* info-title-3 */
        font-size: 120%;
        font-weight: bold;
    }
    .org-info-title-4 {
        /* info-title-4 */
        font-weight: bold;
    }
    .org-info-xref {
        /* info-xref */
        color: #0000ff;
        text-decoration: underline;
    }
    .org-isearch {
        /* isearch */
        color: #b0e2ff;
        background-color: #cd00cd;
    }
    .org-italic {
        /* italic */
        font-style: italic;
    }
    .org-keyword {
        /* font-lock-keyword-face */
        color: #a020f0;
    }
    .org-lazy-highlight {
        /* lazy-highlight */
        background-color: #afeeee;
    }
    .org-link {
        /* link */
        color: #0000ff;
        text-decoration: underline;
    }
    .org-link-visited {
        /* link-visited */
        color: #8b008b;
        text-decoration: underline;
    }
    .org-match {
        /* match */
        background-color: #ffff00;
    }
    .org-message-cited-text {
        /* message-cited-text */
        color: #ff0000;
    }
    .org-message-header-cc {
        /* message-header-cc */
        color: #191970;
    }
    .org-message-header-name {
        /* message-header-name */
        color: #6495ed;
    }
    .org-message-header-newsgroups {
        /* message-header-newsgroups */
        color: #00008b;
        font-weight: bold;
        font-style: italic;
    }
    .org-message-header-other {
        /* message-header-other */
        color: #4682b4;
    }
    .org-message-header-subject {
        /* message-header-subject */
        color: #000080;
        font-weight: bold;
    }
    .org-message-header-to {
        /* message-header-to */
        color: #191970;
        font-weight: bold;
    }
    .org-message-header-xheader {
        /* message-header-xheader */
        color: #0000ff;
    }
    .org-message-mml {
        /* message-mml */
        color: #228b22;
    }
    .org-message-separator {
        /* message-separator */
        color: #a52a2a;
    }
    .org-minibuffer-prompt {
        /* minibuffer-prompt */
        color: #0000cd;
    }
    .org-mm-uu-extract {
        /* mm-uu-extract */
        color: #006400;
        background-color: #ffffe0;
    }
    .org-mode-line {
        /* mode-line */
        color: #000000;
        background-color: #bfbfbf;
    }
    .org-mode-line-buffer-id {
        /* mode-line-buffer-id */
        font-weight: bold;
    }
    .org-mode-line-inactive {
        /* mode-line-inactive */
        color: #333333;
        background-color: #e5e5e5;
    }
    .org-mouse {
        /* mouse */
        background-color: #000000;
    }
    .org-next-error {
        /* next-error */
        background-color: #eedc82;
    }
    .org-nobreak-space {
        /* nobreak-space */
        color: #a52a2a;
        text-decoration: underline;
    }
    .org-org-agenda-date {
        /* org-agenda-date */
        color: #0000ff;
    }
    .org-org-agenda-date-weekend {
        /* org-agenda-date-weekend */
        color: #0000ff;
        font-weight: bold;
    }
    .org-org-agenda-restriction-lock {
        /* org-agenda-restriction-lock */
        background-color: #ffff00;
    }
    .org-org-agenda-structure {
        /* org-agenda-structure */
        color: #0000ff;
    }
    .org-org-archived {
        /* org-archived */
        color: #7f7f7f;
    }
    .org-org-code {
        /* org-code */
        color: #7f7f7f;
    }
    .org-org-column {
        /* org-column */
        background-color: #e5e5e5;
    }
    .org-org-column-title {
        /* org-column-title */
        background-color: #e5e5e5;
        font-weight: bold;
        text-decoration: underline;
    }
    .org-org-date {
        /* org-date */
        color: #a020f0;
        text-decoration: underline;
    }
    .org-org-done {
        /* org-done */
        color: #228b22;
        font-weight: bold;
    }
    .org-org-drawer {
        /* org-drawer */
        color: #0000ff;
    }
    .org-org-ellipsis {
        /* org-ellipsis */
        color: #b8860b;
        text-decoration: underline;
    }
    .org-org-formula {
        /* org-formula */
        color: #b22222;
    }
    .org-org-headline-done {
        /* org-headline-done */
        color: #bc8f8f;
    }
    .org-org-hide {
        /* org-hide */
        color: #e5e5e5;
    }
    .org-org-latex-and-export-specials {
        /* org-latex-and-export-specials */
        color: #8b4513;
    }
    .org-org-level-1 {
        /* org-level-1 */
        color: #0000ff;
    }
    .org-org-level-2 {
        /* org-level-2 */
        color: #b8860b;
    }
    .org-org-level-3 {
        /* org-level-3 */
        color: #a020f0;
    }
    .org-org-level-4 {
        /* org-level-4 */
        color: #b22222;
    }
    .org-org-level-5 {
        /* org-level-5 */
        color: #228b22;
    }
    .org-org-level-6 {
        /* org-level-6 */
        color: #5f9ea0;
    }
    .org-org-level-7 {
        /* org-level-7 */
        color: #da70d6;
    }
    .org-org-level-8 {
        /* org-level-8 */
        color: #bc8f8f;
    }
    .org-org-link {
        /* org-link */
        color: #a020f0;
        text-decoration: underline;
    }
    .org-org-scheduled-previously {
        /* org-scheduled-previously */
        color: #b22222;
    }
    .org-org-scheduled-today {
        /* org-scheduled-today */
        color: #006400;
    }
    .org-org-sexp-date {
        /* org-sexp-date */
        color: #a020f0;
    }
    .org-org-special-keyword {
        /* org-special-keyword */
        color: #bc8f8f;
    }
    .org-org-table {
        /* org-table */
        color: #0000ff;
    }
    .org-org-tag {
        /* org-tag */
        font-weight: bold;
    }
    .org-org-target {
        /* org-target */
        text-decoration: underline;
    }
    .org-org-time-grid {
        /* org-time-grid */
        color: #b8860b;
    }
    .org-org-todo {
        /* org-todo */
        color: #ff0000;
    }
    .org-org-upcoming-deadline {
        /* org-upcoming-deadline */
        color: #b22222;
    }
    .org-org-verbatim {
        /* org-verbatim */
        color: #7f7f7f;
        text-decoration: underline;
    }
    .org-org-warning {
        /* org-warning */
        color: #ff0000;
        font-weight: bold;
    }
    .org-outline-1 {
        /* outline-1 */
        color: #0000ff;
    }
    .org-outline-2 {
        /* outline-2 */
        color: #b8860b;
    }
    .org-outline-3 {
        /* outline-3 */
        color: #a020f0;
    }
    .org-outline-4 {
        /* outline-4 */
        color: #b22222;
    }
    .org-outline-5 {
        /* outline-5 */
        color: #228b22;
    }
    .org-outline-6 {
        /* outline-6 */
        color: #5f9ea0;
    }
    .org-outline-7 {
        /* outline-7 */
        color: #da70d6;
    }
    .org-outline-8 {
        /* outline-8 */
        color: #bc8f8f;
    }
    .outline-text-1,
    .outline-text-2,
    .outline-text-3,
    .outline-text-4,
    .outline-text-5,
    .outline-text-6 {
        margin-bottom: 0.75rem;
    }
    .org-preprocessor {
        /* font-lock-preprocessor-face */
        color: #da70d6;
    }
    .org-query-replace {
        /* query-replace */
        color: #b0e2ff;
        background-color: #cd00cd;
    }
    .org-regexp-grouping-backslash {
        /* font-lock-regexp-grouping-backslash */
        font-weight: bold;
    }
    .org-regexp-grouping-construct {
        /* font-lock-regexp-grouping-construct */
        font-weight: bold;
    }
    .org-region {
        /* region */
        background-color: #eedc82;
    }
    .org-scroll-bar {
        /* scroll-bar */
        background-color: #bfbfbf;
    }
    .org-secondary-selection {
        /* secondary-selection */
        background-color: #ffff00;
    }
    .org-shadow {
        /* shadow */
        color: #7f7f7f;
    }
    .org-show-paren-match {
        /* show-paren-match */
        background-color: #40e0d0;
    }
    .org-show-paren-mismatch {
        /* show-paren-mismatch */
        color: #ffffff;
        background-color: #a020f0;
    }
    .org-string {
        /* font-lock-string-face */
        color: #bc8f8f;
    }
    .org-texinfo-heading {
        /* texinfo-heading */
        color: #0000ff;
    }
    .org-tool-bar {
        /* tool-bar */
        color: #000000;
        background-color: #bfbfbf;
    }
    .org-tooltip {
        /* tooltip */
        color: #000000;
        background-color: #ffffe0;
    }
    .org-trailing-whitespace {
        /* trailing-whitespace */
        background-color: #ff0000;
    }
    .org-type {
        /* font-lock-type-face */
        color: #228b22;
    }
    .org-underline {
        /* underline */
        text-decoration: underline;
    }
    .org-variable-name {
        /* font-lock-variable-name-face */
        color: #b8860b;
    }
    .org-warning {
        /* font-lock-warning-face */
        color: #ff0000;
        font-weight: bold;
    }
    #show_source {
        margin: 0;
        padding: 0;
    }
}


/* END OF @media all */

@media (min-width: 901px) {
    body.toc-ready #table-of-contents {
        opacity: 0;
        pointer-events: none;
        transform: translateX(calc(100% + 1.5rem));
    }
    body.toc-ready.toc-open #table-of-contents {
        opacity: 1;
        pointer-events: auto;
        transform: translateX(0);
    }
}

@media (max-width: 900px) {
    #org-div-home-and-up {
        display: none;
    }
    body {
        padding: 0 0 3rem;
    }
    body #content {
        width: 100%;
        margin: 0;
        padding: 2.5rem 1.6rem 3rem;
        border-radius: 0;
        box-shadow: none;
    }
    .utterances-frame {
        width: 100%;
        padding: 0 0 3rem;
    }
    #table-of-contents {
        top: calc(1.25rem + 3.1rem);
        right: 1rem;
        left: 1rem;
        width: auto;
        max-width: none;
        max-height: min(70vh, 480px);
        transform: translateX(120%);
        opacity: 0;
        pointer-events: none;
        box-shadow: 0 22px 40px rgba(15, 23, 42, 0.3);
        border: 1px solid rgba(15, 23, 42, 0.14);
        padding: 1.1rem 1.25rem 1.35rem;
    }
    body::after {
        content: "";
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.45);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease;
        z-index: 94;
    }
    body.toc-open::after {
        opacity: 1;
        pointer-events: auto;
    }
    body.toc-open #table-of-contents {
        transform: translateX(0);
        opacity: 1;
        pointer-events: auto;
    }
    body.toc-open {
        overflow: hidden;
    }
    body.toc-open #toc-toggle {
        transform: translateY(-2px);
    }
}

@media (max-width: 640px) {
    body .title {
        font-size: clamp(1.8rem, 1.6rem + 1.8vw, 2.2rem);
    }
    h1 {
        font-size: clamp(2rem, 1.8rem + 2vw, 2.4rem);
    }
    h2 {
        font-size: 1.4rem;
    }
    h3 {
        font-size: 1.2rem;
    }
    pre,
    .example {
        padding: 1rem 1.1rem;
    }
    #table-of-contents {
        padding: 1rem;
        max-height: min(70vh, 420px);
    }
}

@media (prefers-color-scheme: dark) {
    body #content,
    body #content:hover {
        box-shadow: 0 32px 70px rgba(2, 6, 23, 0.6);
    }
    img {
        box-shadow: 0 18px 46px rgba(2, 6, 23, 0.55);
    }
    #table-of-contents {
        background: rgba(15, 23, 42, 0.92);
        border: 1px solid var(--border-color);
        box-shadow: 0 20px 48px rgba(2, 6, 23, 0.6);
    }
    #toc-minimize-btn {
        background: rgba(96, 165, 250, 0.15);
        color: var(--link-color);
    }
    #toc-minimize-btn:hover {
        background: rgba(96, 165, 250, 0.25);
    }
    #toc-toggle {
        background: rgba(37, 99, 235, 0.85);
        color: #e2e8f0;
        border-color: rgba(96, 165, 250, 0.5);
        box-shadow: 0 20px 36px rgba(2, 6, 23, 0.55);
    }
    #toc-toggle.is-active {
        background: rgba(30, 41, 59, 0.92);
        color: #e2e8f0;
        border-color: rgba(96, 165, 250, 0.45);
        box-shadow: 0 20px 36px rgba(2, 6, 23, 0.6);
    }
}

@media (prefers-color-scheme: dark) and (max-width: 900px) {
    body::after {
        background: rgba(2, 6, 23, 0.65);
    }
}


/* END OF @media screen */