/* ==========================================================================
   Общая структура:
   0) Tokens
   1) Layout (grid, фон, контейнеры)
   2) Header / Tabs
   3) Navigation
   4) Код и таблицы
   5) Типографика
   6) Admonitions, io-compact и pdf_slides
   7) Responsive + utilities
   8) Details/answers
   9) Images
   10) Главный индекс
   ========================================================================== */

/* --- 0) Tokens ----------------------------------------------------------- */
/* Базовые CSS‑переменные проекта. Source of truth для UI-палитры сайта. */
:root {
    /* Typography */
    --md-typeset-font-size: 0.75rem;

    /* Core UI palette */
    --color-book-blue: #095AA6;
    --color-book-light-blue: #67C6F3;
    --color-book-red: #96231F;

    --color-page-bg: #e5e5e5;
    --color-surface: #ffffff;
    --color-header-bg: #000000;
    --color-tabs-bg: #2b2b2b;
    --color-inverse-text: #ffffff;
    --color-nav-active: #000000;
    --color-heading-text: #000000;
    --color-nav-hover-bg: rgba(0, 0, 0, 0.44);
    --color-inline-code: #1565C0;
    --color-code-block-bg: rgba(227, 242, 253, 0.21);
    --color-body-text: #1a1a1a;
    --color-table-expression: #2e7d32;
    --color-io-label: #111111;
    --color-io-pre-bg: #f3f6fa;
    --color-io-pre-text: #151515;
    --color-slides-border: #c8dff7;
    --color-slides-title-text: rgba(0, 0, 0, 0.78);
    --color-muted-text: #555555;
    --shadow-content: 0 0 12px rgba(0, 0, 0, 0.10);

    --color-table-accent: var(--color-book-blue);

    /* Admonitions palette (Open edX‑style) */
    --color-definition-header: #8D23C3;
    --color-definition-bg: rgba(141, 35, 195, 0.1);

    --color-code-note-header: #1565C0;
    --color-code-note-bg: #E3F2FD;
    --color-slides-header: #E3F2FD;
    --color-slides-bg: #E3F2FD;

    --color-comments-header: var(--color-muted-text);
    --color-comments-bg: rgba(85, 85, 85, 0.1);

    --color-question-header: rgba(253, 155, 0, 0.15);
    --color-question-bg: rgba(255, 238, 181, 0.15);
    --color-question-title-text: rgba(0, 0, 0, 0.75);

    --color-solution-header: #388E3C;
    --color-solution-bg: rgba(208, 245, 211, 0.3);

    --color-task-header: rgba(91, 195, 185, 0.22);
    --color-task-bg: rgba(208, 235, 249, 0.18);
    --color-task-title-text: rgba(0, 0, 0, 0.75);

    --color-answer-chip-bg: rgba(255, 243, 212, 0.98);
    --color-answer-chip-border: rgba(205, 168, 88, 0.5);
    --color-answer-chip-text: rgba(73, 49, 5, 0.82);
    --color-answer-panel-bg: rgba(255, 246, 222, 0.97);
    --color-answer-panel-border: rgba(210, 175, 96, 0.42);
    --color-answer-panel-accent: rgba(253, 155, 0, 0.16);
    --color-answer-code-bg: rgba(255, 250, 238, 0.98);
    --color-answer-comment-divider: rgba(210, 179, 110, 0.38);
    --shadow-answer-panel: 0 1px 2px rgba(116, 84, 20, 0.08);
}

/* Фиксируем базовый rem-уровень: отключаем responsive-скейлинг Material по ширине окна */
html {
    font-size: 125% !important;
}

/* --- 1) Layout ----------------------------------------------------------- */
/* Ограничение ширины страницы (без поломки шапки/сайдбаров Material) */
.md-grid {
    max-width: 1200px !important;
}

/* Общий светло‑серый фон для страницы и боковых панелей */
body {
    background-color: var(--color-page-bg);
}

.md-sidebar,
.md-sidebar--primary,
.md-sidebar--secondary {
    background-color: var(--color-page-bg);
}

/* Белый фон только у основного контента */
.md-main__inner {
    background: none;
}

.md-content {
    background-color: var(--color-surface);
    box-shadow: var(--shadow-content);
    border-radius: 4px;
}

.md-content__inner {
    container-type: inline-size;
}

/* --- 2) Header / Tabs ---------------------------------------------------- */
/* Фон верхней панели */
.md-header {
    background-color: var(--color-header-bg) !important;
}

/* Фон панели вкладок (tabs) */
.md-tabs {
    background-color: var(--color-tabs-bg) !important;
}

/* На случай, если активность помечается на элементе списка */
.md-tabs__item--active > .md-tabs__link {
    font-weight: 700 !important;
}

.md-tabs__link {
    color: var(--color-inverse-text) !important;
}

.md-tabs__link--active {
    color: var(--color-inverse-text) !important;
    font-weight: 700 !important;
}

/* Цвет текста site_name */
.md-header .md-header__title {
    color: var(--color-inverse-text) !important;
}

/* --- 3) Navigation ------------------------------------------------------- */
/* При наведении на ссылку меню слева — подсветка */
.md-nav__link:hover {
    background-color: var(--color-nav-hover-bg) !important;
    color: var(--color-inverse-text) !important;
}

/* Активный пункт бокового меню — жирным и чёрным */
.md-nav__link--active,
.md-nav__link[aria-current="page"] {
    font-weight: 700 !important;
    color: var(--color-nav-active) !important;
}

/* Убираем заголовок текущей вкладки в левом меню на широких экранах (дублирует вкладку сверху) */
@media (min-width: 76.25em) {
    .md-nav--primary > .md-nav__list > .md-nav__item--section > .md-nav__link,
    .md-nav--primary > .md-nav__list > .md-nav__item--section > label.md-nav__link {
        display: none !important;
    }
}

/* Мобильное/всплывающее меню — делаем фон таким же, как у шапки */
.md-nav__source {
    background-color: var(--color-header-bg) !important;
}
.md-nav__source .md-nav__title {
    color: var(--color-inverse-text) !important;
}
/* Заголовок меню (drawer) в мобильном/узком режиме */
.md-nav--primary .md-nav__title {
    background-color: var(--color-header-bg) !important;
    color: var(--color-inverse-text) !important;
}
.md-nav--primary .md-nav__title::before,
.md-nav--primary .md-nav__title a {
    color: var(--color-inverse-text) !important;
}
/* --- 4) Код и таблицы ---------------------------------------------------- */
/* Убираем «серые плашки» у встроенного кода и делаем его чуть более «текстовым» */
.md-typeset :not(pre) > code {
    background-color: transparent !important; /* без серого фона */
    box-shadow: none !important;
    padding: 0 0.05em !important;
    border-radius: 0 !important;
    color: var(--color-inline-code) !important; /* мягкий синий цвет для команд и литералов */
    font-size: 1em !important; /* как основной текст */
    font-weight: 500;
    font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !important;
}

/* Фон для блоков кода */
.md-typeset pre,
.md-typeset pre > code {
    background-color: var(--color-code-block-bg) !important; /* светло-голубой фон */
    font-size: 1em !important; /* как основной текст */
}

/* Таблицы учебника: API-стиль (как api-table.tex) */
.md-typeset .md-typeset__table {
    font-size: 1em; /* как основной текст */
    margin-bottom: 0 !important;
}

.md-typeset .md-typeset__scrollwrap {
    margin-bottom: 0 !important;
}

.md-typeset table:not([class]) {
    border-collapse: collapse;
    border: 0;
    background: var(--color-surface);
    font-size: 1em; /* как основной текст */
    line-height: 1.45; /* arraystretch из NS-00-1 */
}

@media screen and (min-width: 45em) {
    .md-typeset .md-typeset__scrollwrap {
        width: fit-content;
        max-width: 100%;
        margin-left: auto !important;
        margin-right: auto !important;
    }

    .md-typeset .md-typeset__table {
        display: block;
        width: fit-content;
        max-width: 100%;
        margin-left: auto !important;
        margin-right: auto !important;
        margin-bottom: 0 !important;
        padding-left: 0;
        padding-right: 0;
    }

    html .md-typeset__table table {
        width: auto;
    }

    .md-typeset table:not([class]) {
        display: table;
        width: max-content;
        max-width: 100%;
        margin-left: auto !important;
        margin-right: auto !important;
    }
}

.md-typeset table:not([class]) th {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--color-table-accent);
    color: var(--color-table-accent);
    font-weight: 700;
    padding: 0.38rem 1.05rem; /* больше воздуха между колонками глобально */
    vertical-align: middle;
}

/* В шапке таблицы inline-code должен быть того же синего тона */
.md-typeset table:not([class]) th code {
    color: var(--color-table-accent) !important;
}

/* В теле таблицы inline-code не выделяем отдельным цветом */
.md-typeset table:not([class]) td code {
    color: inherit !important;
}

.md-typeset table:not([class]) td {
    background: var(--color-surface);
    border: 0;
    color: var(--color-body-text);
    padding: 0.38rem 1.05rem; /* больше воздуха между колонками глобально */
    vertical-align: middle;
}

.md-typeset table:not([class]) tbody tr:nth-child(odd),
.md-typeset table:not([class]) tbody tr:nth-child(even) {
    background: var(--color-surface);
}

.md-typeset p.table-caption {
    margin-top: 0 !important;
    margin-bottom: 0.55rem;
    text-align: center;
    font-size: 0.92em;
    color: var(--color-table-accent);
    font-style: italic;
}

.md-typeset .table-comment {
    color: inherit;
    font-style: italic;
}

.md-typeset table:not([class]) td code.table-expression {
    color: var(--color-table-expression) !important;
}

.md-typeset table:not([class]) td .table-expression:not(code) {
    color: var(--color-table-expression) !important;
}

.md-typeset .md-typeset__scrollwrap + p.table-caption,
.md-typeset .md-typeset__table + p.table-caption,
.md-typeset table:not([class]) + p.table-caption {
    margin-top: 0.12rem !important;
}

/* --- 5) Типографика ------------------------------------------------------ */
.md-typeset {
    font-size: var(--md-typeset-font-size);
    line-height: 1.55;
}

.md-typeset .math-nowrap {
    white-space: nowrap;
}

/* Заголовки первого уровня в стиле Open edX (как бывший h2) */
.md-typeset h1 {
    padding-bottom: 0;
    margin-top: 20px;
    margin-bottom: 4px;

    /* Настройки шрифта (без смены семейства) */
    font-weight: 600;
    font-size: 1.7rem;
    letter-spacing: -0.6px;
    color: var(--color-heading-text);
}

/* Заголовки второго уровня в стиле Open edX (как бывший h3) */
.md-typeset h2 {
    /* Линию отключили сознательно: визуально перегружает страницу */
    padding-bottom: 0;
    margin-top: 45px;
    margin-bottom: 4px;

    /* Настройки шрифта (без смены семейства) */
    font-weight: 400;
    font-size: 1.15rem;
    letter-spacing: -0.6px;
    color: var(--color-heading-text);
}

/* Заголовки третьего уровня: просто жирный текст, без линий */
.md-typeset h3 {
    font-weight: 400;
    border-bottom: none;
}

/* Скрываем стандартный footer Material (он не используется в учебнике) */
.md-footer-meta {
    display: none;
}

/* --- 6) Admonitions (Open edX‑style) ------------------------------------ */

/* ===== Admonition как на Open edX: светлая шапка + тело, без иконок ===== */

/* Заголовок-плашка (типографика — почти нативная, но заголовок жирнее) */
.md-typeset .admonition-title,
.md-typeset summary {
/*    margin: 0 !important; - нельзя ставить ноль, иначе ломаются отсупы!!!! */
    padding: 4px 14px !important;
    /*font-size: 1.0rem;*/
    font-weight: 600 !important;

}

/* Убираем иконки полностью (включая нативные Material) */
.md-typeset .admonition-title::before,
.md-typeset summary::before {
    display: none !important;
}

/* Текст внутри блоков — такой же, как вне блока */
.md-typeset .admonition,
.md-typeset details {
    font-size: inherit !important;
    line-height: inherit !important;
}

.md-typeset .admonition > :not(.admonition-title),
.md-typeset details > :not(summary) {
    font-size: inherit !important;
    line-height: inherit !important;
}

/* ===== Inline blocks (Material): !!! ... inline / inline end ===== */
.md-typeset .admonition.inline,
.md-typeset details.inline {
    width: 16rem;
    margin: 0.2rem 0 1rem 1rem !important;
}

.md-typeset .admonition.inline {
    float: left;
}

.md-typeset .admonition.inline.end,
.md-typeset details.inline.end {
    float: right;
    margin: 0.2rem 0 1rem 1rem !important;
}

/* ===== Типы блоков (используются так: !!! definition "..." и т.п.) ===== */

/* Определение */
.md-typeset .admonition.definition,
.md-typeset details.definition {
    background: var(--color-definition-bg) !important;
    border: none !important;
}
.md-typeset .definition > .admonition-title,
.md-typeset details.definition > summary {
    background: var(--color-definition-header) !important;
    color: var(--color-inverse-text) !important;
}

/* Код/заметка по коду */
.md-typeset .admonition.code-note,
.md-typeset details.code-note {
    background: var(--color-code-note-bg) !important;
    border: none !important;
}
.md-typeset .code-note > .admonition-title,
.md-typeset details.code-note > summary {
    background: var(--color-code-note-header) !important;
    color: var(--color-inverse-text) !important;
}

/* Комментарий */
.md-typeset .admonition.comment,
.md-typeset details.comment {
    background: var(--color-comments-bg) !important;
    border: none !important;
}
.md-typeset .comment > .admonition-title,
.md-typeset details.comment > summary {
    background: var(--color-comments-header) !important;
    color: var(--color-inverse-text) !important;
}

/* Вопрос / Подумайте */
.md-typeset .admonition.question-block,
.md-typeset details.question-block {
    background: var(--color-question-bg) !important;
    border: none !important;
}
.md-typeset .question-block > .admonition-title,
.md-typeset details.question-block > summary {
    background: var(--color-question-header) !important;
    color: var(--color-question-title-text) !important;
}
/* Выравниваем стрелку раскрытия по центру строки заголовка */
.md-typeset details.question-block > summary::after {
    top: 50%;
    transform: translateY(-50%) rotate(0deg);
}
.md-typeset details.question-block[open] > summary::after {
    transform: translateY(-50%) rotate(90deg);
}

/* Разбор */
.md-typeset .admonition.solution,
.md-typeset details.solution {
    background: var(--color-solution-bg) !important;
    border: none !important;
}
.md-typeset .solution > .admonition-title,
.md-typeset details.solution > summary {
    background: var(--color-solution-header) !important;
    color: var(--color-inverse-text) !important;
}
/* В проекте блок solution используется без заголовков */
.md-typeset .solution > .admonition-title,
.md-typeset details.solution > summary {
    display: none !important;
}

/* Задание */
.md-typeset .admonition.task,
.md-typeset details.task {
    background: var(--color-task-bg) !important;
    border: none !important;
}
.md-typeset .task > .admonition-title,
.md-typeset details.task > summary {
    background: var(--color-task-header) !important;
    color: var(--color-task-title-text) !important;
}
/* Держим task-блок визуально в одном поведении с question-block */
.md-typeset details.task > summary::after {
    top: 50%;
    transform: translateY(-50%) rotate(0deg);
}
.md-typeset details.task[open] > summary::after {
    transform: translateY(-50%) rotate(90deg);
}

/* Карточки задач из yandex-contests/previews */
.md-typeset .preview-problem {
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    margin: 0 0 0.75rem;
    padding: 0.05rem 0 0.05rem;
    position: relative;
}

.md-typeset .preview-problem:last-child {
    margin-bottom: 0;
}

.md-typeset details.task > p:has(> .preview-problem) {
    margin: 0 !important;
}

.md-typeset hr.preview-problem-divider {
    border: 0;
    border-top: 1px solid rgba(0, 0, 0, 0.18);
    margin: 0.85rem 0 0.95rem !important;
}

.md-typeset .preview-problem::after {
    clear: both;
    content: "";
    display: block;
}

.md-typeset .preview-problem-tag {
    background: #f0efee;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    color: rgba(0, 0, 0, 0.72);
    float: right;
    font-size: 0.72em;
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1;
    margin: 0.1rem 0 0.75rem 0.75rem;
    padding: 0.3rem 0.52rem;
}

.md-typeset .problem-statement {
    font-family: inherit;
    font-size: 0.96em;
    line-height: 1.58;
    margin: 0;
}

.md-typeset .problem-statement a,
.md-typeset .problem-statement a:hover,
.md-typeset .problem-statement a:focus {
    color: inherit !important;
    text-decoration: underline;
}

.md-typeset .problem-statement code,
.md-typeset .problem-statement td code,
.md-typeset .problem-statement p code,
.md-typeset .problem-statement li code {
    background: rgba(0, 0, 0, 0.045) !important;
    border-radius: 4px;
    color: inherit !important;
    font-size: 0.96em !important;
    padding: 0.04em 0.22em !important;
}

.md-typeset .problem-statement p {
    margin: 0 0 0.5rem;
}

.md-typeset .problem-statement .header {
    margin: 0 3rem 0.65rem 0;
    text-align: left;
}

.md-typeset .preview-problem:not(:has(.preview-problem-tag)) .problem-statement .header {
    margin-right: 0;
}

.md-typeset .problem-statement .header .title {
    font-family: inherit;
    font-size: 1.28em;
    font-weight: 700;
    line-height: 1.2;
}

.md-typeset .problem-statement .legend,
.md-typeset .problem-statement .input-specification,
.md-typeset .problem-statement .output-specification,
.md-typeset .problem-statement .sample-tests {
    margin-top: 0.58rem;
}

.md-typeset .problem-statement .legend {
    margin-top: 0;
}

.md-typeset .problem-statement .section-title {
    color: var(--color-heading-text);
    font-family: inherit;
    font-size: 1em;
    font-weight: 700;
    letter-spacing: 0;
    margin: 0 0 0.28rem;
    text-transform: none;
}

.md-typeset .problem-statement .sample-test {
    display: grid;
    gap: 0.4rem;
    margin-bottom: 0.4rem;
}

.md-typeset .problem-statement .sample-test:last-child {
    margin-bottom: 0;
}

.md-typeset .problem-statement .sample-tests .input,
.md-typeset .problem-statement .sample-tests .output {
    background: #f3f2f1;
    border: 0;
    border-radius: 14px;
    overflow: hidden;
}

.md-typeset .problem-statement .sample-tests .title {
    background: transparent;
    border-bottom: 0;
    color: rgba(0, 0, 0, 0.78);
    font-family: inherit;
    font-size: 0.86em;
    font-weight: 700;
    letter-spacing: 0;
    margin: 0;
    padding: 0.58rem 0.8rem 0.18rem;
    text-transform: none;
}

.md-typeset .problem-statement .sample-tests pre {
    background: transparent !important;
    border: 0 !important;
    border-radius: 0;
    box-shadow: none !important;
    color: var(--color-io-pre-text) !important;
    font-family: var(--md-code-font-family, monospace) !important;
    font-size: 0.96em !important;
    line-height: 1.3 !important;
    margin: 0 !important;
    padding: 0.02rem 0.8rem 0.65rem !important;
    white-space: pre;
    word-break: normal;
}

@media (min-width: 52em) {
    .md-typeset .problem-statement .sample-test {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Компактный блок ввода/вывода в стиле черно-белой консоли */
.md-typeset .io-compact {
    background: transparent;
    border: 0;
    color: inherit;
    margin: 0.12rem 0 0.32rem;
    padding: 0;
}

.md-typeset .io-compact__label {
    background: transparent;
    border: 0;
    border-radius: 2px;
    color: var(--color-io-label);
    display: inline-block;
    font-size: 0.78em;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin: 0.05rem 0 0;
    padding: 0.02rem 0.34rem 0.01rem;
    text-transform: uppercase;
}

.md-typeset .io-compact pre + .io-compact__label {
    margin-top: 0.34rem;
}

.md-typeset .io-compact pre {
    background: var(--color-io-pre-bg) !important;
    border: 0 !important;
    border-radius: 2px;
    box-shadow: none !important;
    color: var(--color-io-pre-text) !important;
    font-size: 1em !important; /* как основной текст */
    line-height: 1.28 !important;
    margin: 0 0 0.08rem !important;
    padding: 0.18rem 0.34rem 0.16rem !important;
    white-space: pre;
}

.md-typeset .io-compact.inline-end {
    float: right;
    margin: 0.1rem 0 0.5rem 0.9rem;
    width: calc(40% - 0.36rem);
}

/* Основной порядок: код, затем inline-блок справа */
.md-typeset .highlight:has(+ p > .io-compact.inline-end),
.md-typeset .highlight:has(+ .io-compact.inline-end),
.md-typeset .highlight:has(+ p + .io-compact.inline-end),
.md-typeset .highlight:has(+ p + p > .io-compact.inline-end),
.md-typeset .highlight:has(+ p + p + .io-compact.inline-end) {
    float: left;
    width: calc(60% - 0.54rem);
}

/* Обратный порядок (legacy): сначала inline-блок, затем код */
.md-typeset p:has(> .io-compact.inline-end) + .highlight,
.md-typeset .io-compact.inline-end + .highlight,
.md-typeset .io-compact.inline-end + p + .highlight {
    float: left;
    width: calc(60% - 0.54rem);
}

@media (max-width: 60em) {
    .md-typeset .highlight:has(+ p > .io-compact.inline-end),
    .md-typeset .highlight:has(+ .io-compact.inline-end),
    .md-typeset .highlight:has(+ p + .io-compact.inline-end),
    .md-typeset .highlight:has(+ p + p > .io-compact.inline-end),
    .md-typeset .highlight:has(+ p + p + .io-compact.inline-end),
    .md-typeset p:has(> .io-compact.inline-end) + .highlight,
    .md-typeset .io-compact.inline-end + .highlight,
    .md-typeset .io-compact.inline-end + p + .highlight {
        float: none;
        width: auto;
    }

    .md-typeset .io-compact.inline-end {
        float: none;
        margin: 0.25rem 0 0.4rem;
        width: auto;
    }
}

/* Блок слайдов (pdf_slides macro) */
.md-typeset .pdf-slides-card {
    background: var(--color-slides-bg) !important;
    border: none !important;
    border-radius: 4px;
    margin: 0.45rem 0 0.75rem;
    padding: 0;
}

.md-typeset .pdf-slides-toggle {
    width: 100%;
    border: none !important;
    background: var(--color-slides-header) !important;
    color: var(--color-slides-title-text) !important;
    padding: 4px 14px;
    padding-right: 1.8rem !important;
    font: inherit;
    font-weight: 600;
    line-height: 1.35;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    border-radius: 4px;
    text-align: left;
    position: relative;
}

.md-typeset .pdf-slides-toggle:focus,
.md-typeset .pdf-slides-toggle:focus-visible {
    outline: none !important;
    box-shadow: none !important;
}

.md-typeset .pdf-slides-toggle__icon {
    font-size: 14px;
    line-height: 1;
    opacity: 0.82;
}

.md-typeset .pdf-slides-toggle::after {
    background-color: currentcolor;
    content: "";
    -webkit-mask-image: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58 13.17 12 8.59 7.41 10 6l6 6-6 6z"/></svg>');
    mask-image: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58 13.17 12 8.59 7.41 10 6l6 6-6 6z"/></svg>');
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-size: contain;
    mask-size: contain;
    position: absolute;
    right: 0.55rem;
    top: 50%;
    transform: translateY(-50%) rotate(0deg);
    transition: transform 0.25s;
    width: 0.95rem;
    height: 0.95rem;
    display: block;
    pointer-events: none;
}

.md-typeset .pdf-slides-toggle[aria-expanded="true"]::after {
    transform: translateY(-50%) rotate(90deg);
}

.md-typeset .pdf-slides-viewer {
    margin: 6px 10px 10px;
}

.md-typeset .pdf-slides-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 6px 0;
}

.md-typeset .pdf-slides-nav__btn {
    padding: 6px 10px;
}

.md-typeset .pdf-slides-nav__info {
    min-width: 120px;
    text-align: center;
}

.md-typeset .pdf-slides-canvas-wrap {
    width: 100%;
    overflow: auto;
    border: 1px solid var(--color-slides-border);
    border-radius: 6px;
    background: var(--color-surface);
}

.md-typeset .pdf-slides-status {
    min-height: 220px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 1.15rem 1.25rem;
    text-align: center;
    color: var(--color-slides-title-text);
}

.md-typeset .pdf-slides-status[hidden],
.md-typeset .pdf-slides-canvas[hidden] {
    display: none !important;
}

.md-typeset .pdf-slides-status__spinner {
    width: 1.8rem;
    height: 1.8rem;
    border: 2px solid rgba(24, 99, 170, 0.18);
    border-top-color: rgba(24, 99, 170, 0.78);
    border-radius: 999px;
    animation: pdf-slides-spin 0.9s linear infinite;
}

.md-typeset .pdf-slides-status[data-state="error"] .pdf-slides-status__spinner {
    display: none;
}

.md-typeset .pdf-slides-status__title {
    font-weight: 600;
    line-height: 1.35;
}

.md-typeset .pdf-slides-status__text {
    max-width: 34rem;
    font-size: 0.92em;
    line-height: 1.45;
    opacity: 0.82;
}

.md-typeset .pdf-slides-canvas {
    display: block;
    margin: 0 auto;
}

@keyframes pdf-slides-spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===== Таблицы внутри контентных блоков (admonitions) =====
   Убираем белый фон таблиц/ячеек, чтобы фон соответствовал фону блока.
*/
.md-typeset .admonition table:not([class]),
.md-typeset details table:not([class]) {
    background-color: transparent !important;
}

.md-typeset .admonition table:not([class]) th,
.md-typeset .admonition table:not([class]) td,
.md-typeset details table:not([class]) th,
.md-typeset details table:not([class]) td {
    background-color: transparent !important;
}

/* Отключаем «зебру» и hover внутри блоков, чтобы не появлялись чужие подложки */
.md-typeset .admonition table:not([class]) tbody tr:nth-child(odd),
.md-typeset .admonition table:not([class]) tbody tr:nth-child(even),
.md-typeset details table:not([class]) tbody tr:nth-child(odd),
.md-typeset details table:not([class]) tbody tr:nth-child(even) {
    background-color: transparent !important;
}

.md-typeset .admonition table:not([class]) tbody tr:hover td,
.md-typeset details table:not([class]) tbody tr:hover td {
    background-color: transparent !important;
}

.md-typeset table.noheader thead {
    display: none !important;
}

/* --- 7) Responsive + utilities ------------------------------------------ */
/* Убираем правую колонку (оглавление / TOC) полностью, без пустого места */
@media (min-width: 60em) {
    .md-sidebar--secondary {
        display: none !important;
        width: 0 !important;
        max-width: 0 !important;
        flex: 0 0 0 !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .md-main__inner {
        grid-template-columns: auto minmax(0, 100%) !important;
    }
}

/* --- 8) Details/answers -------------------------------------------------- */
.md-typeset details.answer {
    margin: 0.55rem 0 0.85rem;
    padding: 0;
    border: 0;
    background: transparent;
}

.md-typeset details.answer > summary {
    cursor: pointer;
    list-style: none;
    background: var(--color-answer-chip-bg);
    border: 1px solid var(--color-answer-chip-border);
    border-radius: 999px;
    color: var(--color-answer-chip-text);
    display: flex;
    align-items: center;
    gap: 0.42rem;
    margin: 0 0 0 auto;
    padding: 0.26rem 0.78rem 0.26rem 0.86rem !important;
    position: relative;
    text-align: left;
    width: fit-content;
    font-size: 0.95em;
}

.md-typeset details.answer[open] > summary {
    background: var(--color-answer-panel-bg);
    margin-bottom: 0.65rem;
}

.md-typeset details.answer > summary::-webkit-details-marker { display: none; }

.md-typeset details.answer > summary::after {
    content: "▸";
    position: static;
    line-height: 1;
}
.md-typeset details.answer[open] > summary::after {
    content: "▾";
}

.md-typeset details.answer[open] {
    background: var(--color-answer-panel-bg);
    border-radius: 10px;
    box-shadow: var(--shadow-answer-panel);
    padding: 0.75rem 0.9rem 0.85rem;
}

.md-typeset details.answer[open] > :nth-child(2) {
    margin-top: 0 !important;
}

.md-typeset details.answer[open] > .highlight:first-of-type,
.md-typeset details.answer[open] > p:not(.answer-comment):first-of-type {
    margin-bottom: 0.35rem !important;
}

.md-typeset details.answer[open] > p:not(.answer-comment):first-of-type {
    color: rgba(0, 0, 0, 0.86);
    font-weight: 600;
}

.md-typeset details.answer[open] > :last-child {
    margin-bottom: 0 !important;
}

.md-typeset details.answer .highlight,
.md-typeset details.answer pre {
    background: var(--color-answer-code-bg) !important;
    border-radius: 8px;
}

.md-typeset details.answer .answer-comment {
    border-top: 1px solid var(--color-answer-comment-divider);
    color: rgba(0, 0, 0, 0.62);
    font-size: 0.93em;
    font-style: italic;
    margin-top: 0.7rem;
    margin-bottom: 0 !important;
    padding-top: 0.58rem;
}

.md-typeset details.answer .answer-comment code {
    font-style: normal;
}

/* Убираем серую рамку/обводку при фокусе у collapsible (details/summary) */
.md-typeset details > summary:focus,
.md-typeset details > summary:focus-visible {
    outline: none !important;
    box-shadow: none !important;
}
.md-typeset details:focus,
.md-typeset details:focus-visible,
.md-typeset details:focus-within {
    outline: none !important;
    box-shadow: none !important;
}

/* --- 9) Images ----------------------------------------------------------- */
/* Класс для правого floating‑рисунка (используется в intro‑блоках) */
.md-typeset img.img-float-right,
.md-typeset figure.img-float-right {
    float: right;
    width: 35%;
    margin: 0.2rem 0 1rem 1rem;
}

.md-typeset img.img-float-right {
    border-radius: 10px;
}

.md-typeset figure.img-float-right img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    display: block;
}

.md-typeset figure.img-float-right figcaption {
    font-size: 0.69em;
    color: var(--color-muted-text);
    text-align: center;
    margin-top: 0.2rem;
}

/* --- 10) Главный индекс -------------------------------------------------- */
.md-typeset h2.book-home-direction {
    --book-home-soft-line: #f0e8dc;

    align-items: center;
    color: var(--color-heading-text);
    display: flex;
    font-size: 1.28rem;
    font-weight: 700;
    gap: 0.4rem;
    margin: 1.65rem 0 0.75rem;
    padding: 0;
}

.md-typeset h2.book-home-direction::after {
    background: var(--book-home-soft-line);
    content: "";
    flex: 1 1 auto;
    height: 1px;
    min-width: 2rem;
}

.md-typeset h2.book-home-direction + ul {
    --book-direction-color: #2f7d5d;
    --book-direction-soft: #f2f7f3;
    --book-direction-spine: rgba(47, 125, 93, 0.76);
    --book-home-soft-line: #f0e8dc;
    --book-home-neutral-line: #e8dccb;
    --book-home-shadow: 0 12px 30px rgba(17, 17, 17, 0.08);

    display: grid;
    gap: 1.05rem;
    grid-auto-rows: 1fr;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr));
    list-style: none !important;
    margin: 0 0 1.85rem;
    padding-left: 0;
}

.md-typeset h2.book-home-direction:nth-of-type(2) + ul {
    --book-direction-color: #1f5d9b;
    --book-direction-soft: #eef5f8;
    --book-direction-spine: rgba(31, 93, 155, 0.76);
}

.md-typeset h2.book-home-direction:nth-of-type(3) + ul {
    --book-direction-color: #6a4aa0;
    --book-direction-soft: #f3f0f8;
    --book-direction-spine: rgba(106, 74, 160, 0.76);
}

.md-typeset h2.book-home-direction + ul > li {
    background: var(--color-surface);
    border: 1px solid var(--book-home-soft-line);
    border-radius: 12px;
    box-shadow: var(--book-home-shadow);
    display: flex;
    flex-direction: column;
    margin: 0;
    min-width: 0;
    overflow: hidden;
    padding: 0.78rem 0.84rem 0.9rem;
    position: relative;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.md-typeset h2.book-home-direction + ul > li::before {
    background: var(--book-direction-spine);
    bottom: 0;
    content: "";
    left: 0;
    position: absolute;
    top: 0;
    width: 0.18rem;
}

.md-typeset h2.book-home-direction + ul > li > p {
    margin: 0.45rem 0 0;
}

.md-typeset h2.book-home-direction + ul > li > p:first-child {
    align-items: center;
    aspect-ratio: 16 / 9;
    background: var(--book-direction-soft);
    border-radius: 9px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.64);
    display: flex;
    justify-content: center;
    margin: 0 0 0.62rem;
    overflow: hidden;
    padding: 0.55rem;
    position: relative;
    width: 100%;
}

.md-typeset h2.book-home-direction + ul .book-home-card-image {
    display: block;
    filter: none;
    height: 100%;
    max-height: 100%;
    max-width: 100%;
    mix-blend-mode: normal;
    object-fit: contain;
    opacity: 0.94;
    width: 100%;
}

.md-typeset h2.book-home-direction + ul > li > p:nth-child(2) {
    font-size: 1.12em;
    font-weight: 700;
    line-height: 1.25;
}

.md-typeset h2.book-home-direction + ul > li > p:nth-child(2) a {
    color: var(--color-heading-text);
    display: block;
    text-decoration: none;
}

.md-typeset h2.book-home-direction + ul > li > p:nth-child(2) a:hover {
    color: var(--book-direction-color);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.16em;
}

.md-typeset h2.book-home-direction + ul > li > p:nth-child(3) {
    color: var(--color-muted-text);
    font-size: 0.92em;
    line-height: 1.45;
    min-height: 2.55em;
}

.md-typeset h2.book-home-direction + ul .book-home-section-link {
    align-items: center;
    background: var(--book-direction-color);
    border-radius: 8px;
    color: var(--color-inverse-text);
    display: flex;
    font-weight: 700;
    justify-content: center;
    line-height: 1.2;
    min-height: 2rem;
    padding: 0.42rem 0.7rem;
    text-decoration: none;
    width: 100%;
}

.md-typeset h2.book-home-direction + ul .book-home-section-link:hover {
    color: var(--color-inverse-text);
    filter: brightness(0.95);
}

.md-typeset h2.book-home-direction + ul > li:hover {
    border-color: var(--book-home-neutral-line);
    box-shadow: 0 16px 34px rgba(17, 17, 17, 0.10);
    transform: translateY(-1px);
}

.md-typeset h2.book-home-direction + ul > li > ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.28rem 0.45rem;
    list-style: none;
    margin: 0.78rem 0 0;
    padding-left: 0;
}

.md-typeset h2.book-home-direction + ul > li > ul::before {
    color: var(--color-body-text);
    content: "Главы по порядку:";
    flex-basis: 100%;
    font-size: 0.88em;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.08rem;
}

.md-typeset h2.book-home-direction + ul > li > ul > li {
    margin: 0;
    min-width: 0;
    padding: 0;
}

.md-typeset h2.book-home-direction + ul > li > ul a {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    color: var(--color-book-blue);
    display: inline-flex;
    gap: 0.2rem;
    justify-content: flex-start;
    line-height: 1.2;
    max-width: 100%;
    min-height: 0;
    overflow-wrap: anywhere;
    padding: 0.1rem 0;
    text-align: left;
    text-decoration: none;
    transition: color 0.16s ease;
    width: auto;
}

.md-typeset h2.book-home-direction + ul > li > ul a::after {
    content: "";
    flex: 0 0 auto;
}

.md-typeset h2.book-home-direction + ul > li > ul > li:not(:last-child)::after {
    color: var(--color-muted-text);
    content: "·";
    margin-left: 0.45rem;
}

.md-typeset h2.book-home-direction + ul > li > ul a:hover {
    color: var(--color-book-blue);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.md-typeset h2.book-home-direction + ul > li > ul a:focus-visible {
    outline: 2px solid var(--color-book-light-blue);
    outline-offset: 2px;
}