/**
 * Тренажёр тестов. Раздел /testy идёт на собственном layout, поэтому здесь и
 * типографика, и сетка страницы. Всё под префиксом qz-: файл подключается ещё и
 * на страницах материалов ради кнопки теста и не должен задевать стили сайта.
 */
:root {
    --qz-ink: #16211c;
    --qz-ink-2: #3c4b43;
    --qz-muted: #6d7f74;
    --qz-paper: #f2f5f1;
    --qz-surface: #fff;
    --qz-surface-2: #e9efe9;
    --qz-line: #dbe3dc;
    --qz-line-strong: #c3cfc5;
    --qz-brand: #31b647;
    --qz-brand-deep: #1c7233;
    --qz-brand-soft: #e4f4e7;
    --qz-rust: #b0463a;
    --qz-rust-soft: #f9e9e6;
    --qz-amber: #8f6a10;
    --qz-amber-soft: #f8eed6;
    --qz-shadow: 0 1px 2px rgba(22, 33, 28, .05), 0 10px 28px -16px rgba(22, 33, 28, .28);
    --qz-display: "Bitter", Georgia, "Times New Roman", serif;
    --qz-body: "Golos Text", "Segoe UI", system-ui, -apple-system, sans-serif;
    --qz-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

/* ── страница раздела ───────────────────────────────────────────── */

body.qz-body {
    margin: 0;
    background: var(--qz-surface);
    color: var(--qz-ink);
    font-family: var(--qz-body);
    font-size: 16px;
    line-height: 1.62;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.qz-body *,
.qz-body *::before,
.qz-body *::after {
    box-sizing: border-box;
}

.qz-body img {
    max-width: 100%;
}

.qz-body a {
    color: var(--qz-brand-deep);
}

.qz-body :focus-visible {
    outline: 2px solid var(--qz-brand);
    outline-offset: 3px;
    border-radius: 4px;
}

.qz-wrap {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.qz-wrap--narrow {
    max-width: 960px;
}

.qz-main {
    flex: 1 0 auto;
    padding: 30px 0 72px;
}

/* шапка и подвал раздела */
.qz-top-bar {
    background: var(--qz-surface);
    border-bottom: 1px solid var(--qz-line);
}

.qz-top-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 58px;
    flex-wrap: wrap;
}

.qz-brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    line-height: 0;
    transition: transform .18s;
}

.qz-brand:hover {
    transform: scale(1.06);
}

.qz-brand__icon {
    opacity: .85;
    transition: opacity .18s;
}

.qz-brand:hover .qz-brand__icon {
    opacity: 1;
}

.qz-brand__icon svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* меню пользователя в шапке */
.qz-top-user {
    position: relative;
}

.qz-top-user[hidden] {
    display: none;
}

.qz-top-user__toggle {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: 1px solid #dcdcdc;
    border-radius: 50%;
    background: var(--qz-surface);
    color: #8c8c8c;
    cursor: pointer;
    transition: border-color .15s, background-color .15s, color .15s, transform .12s;
}

.qz-top-user__toggle:hover,
.qz-top-user.is-open .qz-top-user__toggle {
    border-color: #c4c4c4;
    background: #f1f1f1;
    color: #555;
}

.qz-top-user__toggle:active {
    transform: scale(.94);
}

.qz-top-user__toggle.is-signed {
    background: #ECEFF1;
    border-color: #90A4AE;
    color: #90A4AE;
}

.qz-avatar,
.qz-login-icon {
    display: block;
    width: 22px;
    height: 22px;
}

.qz-avatar svg,
.qz-login-icon svg {
    display: block;
    width: 100%;
    height: 100%;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.qz-top-user__menu {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    z-index: 30;
    min-width: 200px;
    padding: 6px;
    border: 1px solid var(--qz-line);
    border-radius: 10px;
    background: var(--qz-surface);
    box-shadow: var(--qz-shadow);
    animation: qz-drop .18s ease-out;
}

.qz-top-user__menu[hidden] {
    display: none;
}

.qz-top-user__who {
    padding: 8px 12px 6px;
    font-size: .82rem;
    font-weight: 600;
    color: var(--qz-muted);
    border-bottom: 1px solid var(--qz-line);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qz-top-user__item {
    display: block;
    width: 100%;
    padding: 10px 12px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    font: inherit;
    font-size: .9rem;
    text-align: left;
    color: var(--qz-ink);
    cursor: pointer;
    transition: background-color .15s;
}

.qz-top-user__item:hover {
    background: var(--qz-surface-2);
}

.qz-top-user__item--tg,
.qz-body .qz-top-user__item--tg {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--qz-ink);
    white-space: nowrap;
}

.qz-tg-btn,
.qz-body .qz-tg-btn {
    background: #2aabee;
    border-color: #2aabee;
    color: #fff;
}

.qz-tg-btn:hover,
.qz-body .qz-tg-btn:hover {
    background: #1f9bdc;
    color: #fff;
}

.qz-tg-btn__icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    flex: none;
}

.qz-tg-btn__icon svg {
    display: block;
    width: 100%;
    height: 100%;
    fill: currentColor;
}

.qz-top-user__item--tg .qz-tg-btn__icon {
    color: #2aabee;
}

.qz-footer {
    flex: none;
    border-top: 1px solid var(--qz-line);
    padding: 22px 0 34px;
    font-size: .82rem;
    color: var(--qz-muted);
}

.qz-footer a {
    color: var(--qz-muted);
}

.qz-crumbs {
    font-size: .8rem;
    color: var(--qz-muted);
    margin-bottom: 10px;
}

.qz-crumbs a {
    color: var(--qz-muted);
    text-decoration: none;
}

.qz-crumbs a:hover {
    color: var(--qz-ink);
}

.qz-crumbs span::after {
    content: "→";
    margin: 0 7px;
    color: var(--qz-line-strong);
}

.qz-crumbs span:last-child::after {
    content: none;
}

.qz-body h1 {
    font-family: var(--qz-display);
    font-weight: 700;
    font-size: clamp(1.55rem, 3.4vw, 2.1rem);
    line-height: 1.12;
    letter-spacing: -.015em;
    text-wrap: balance;
    margin: 0 0 10px;
}

.qz-body h2 {
    font-family: var(--qz-display);
    font-weight: 600;
    font-size: 1.18rem;
    line-height: 1.25;
    margin: 0;
}

.qz-body p {
    margin: 0;
}

.qz-lead,
.qz-body .qz-lead {
    color: var(--qz-ink-2);
    font-size: .98rem;
    max-width: 68ch;
    margin: 0 0 20px;
}

.qz-back {
    display: inline-block;
    font-size: .85rem;
    color: var(--qz-muted);
    text-decoration: none;
    margin-bottom: 12px;
}

/* ── обложка раздела и пособия ──────────────────────────────────── */

.qz-cover {
    background: var(--qz-surface);
    border: 1px solid var(--qz-line);
    border-radius: 14px;
    box-shadow: var(--qz-shadow);
    padding: 18px 26px 0;
    margin-bottom: 26px;
    overflow: hidden;
}

.qz-cover .qz-crumbs {
    margin-bottom: 16px;
}

.qz-cover__main {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 24px 26px;
    align-items: center;
    padding-bottom: 22px;
}

.qz-cover__main > .qz-cover__text:first-child {
    grid-column: 1 / 3;
}

.qz-cover__img {
    display: block;
    width: 84px;
    flex: none;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 6px 18px -8px rgba(22, 33, 28, .45);
    transform: rotate(-2deg);
    transition: transform .25s;
}

.qz-cover__img:hover {
    transform: rotate(0) scale(1.03);
}

.qz-cover__img img {
    display: block;
    width: 100%;
    height: auto;
}

/* Значок «Повышенный уровень» поверх обложки; разметка и рисунок — common\helpers\BookLevelBadge.
   Главный CSS сайта на страницах раздела не подключён, поэтому базовые правила здесь. */
.book-level-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border: 2px solid #fff;
    border-radius: 50%;
    background: linear-gradient(135deg, #f97316, #dc2626);
    box-shadow: 0 1px 4px rgba(15, 23, 42, .35);
}

.book-level-badge svg {
    width: 56%;
    height: 56%;
}

.qz-cover__img {
    position: relative;
}

.qz-cover__text .qz-lead,
.qz-body .qz-cover__text .qz-lead {
    margin-bottom: 0;
}

.qz-cover__text h1 {
    margin-bottom: 0;
}

.qz-eyebrow {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--qz-brand-deep);
    margin-bottom: 8px;
}

.qz-facts {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(88px, auto));
    gap: 10px 22px;
}

.qz-facts li {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.qz-facts b {
    font-family: var(--qz-mono);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--qz-ink);
    font-variant-numeric: tabular-nums;
}

.qz-facts span {
    font-size: .74rem;
    color: var(--qz-muted);
    letter-spacing: .02em;
}

/* ── кнопки ─────────────────────────────────────────────────────── */

.qz-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
    border-radius: 7px;
    padding: 11px 20px;
    font: inherit;
    font-size: .88rem;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color .15s, border-color .15s;
}

/* Селектор с .qz-body нужен, чтобы ссылка-кнопка не брала цвет обычных ссылок. */
.qz-btn--primary,
.qz-body .qz-btn--primary {
    background: var(--qz-brand);
    color: #fff;
}

.qz-btn--primary:hover,
.qz-body .qz-btn--primary:hover {
    background: #2aa33f;
    color: #fff;
}

.qz-btn--ghost,
.qz-body .qz-btn--ghost {
    background: transparent;
    border-color: var(--qz-line-strong);
    color: var(--qz-ink-2);
}

.qz-btn--ghost:hover,
.qz-body .qz-btn--ghost:hover {
    border-color: var(--qz-muted);
    color: var(--qz-ink);
}

.qz-btn.is-disabled,
.qz-body .qz-btn.is-disabled {
    background: var(--qz-surface);
    border-color: var(--qz-line-strong);
    color: var(--qz-muted);
    cursor: default;
    pointer-events: none;
}

.qz-btn--sm {
    padding: 8px 14px;
    font-size: .82rem;
    border-radius: 6px;
}

.qz-btn[disabled] {
    opacity: .5;
    cursor: default;
}

/* ── раздел со всеми тестами ────────────────────────────────────── */

.qz-book + .qz-book {
    margin-top: 40px;
}

.qz-book__head {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--qz-line);
    margin-bottom: 16px;
}

.qz-book__head img {
    width: 43px;
    height: auto;
    border-radius: 3px;
    flex: none;
}

.qz-book__head small {
    display: block;
    color: var(--qz-muted);
    font-size: .82rem;
}

.qz-readiness {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    padding: 16px 18px;
    background: var(--qz-surface-2);
    border: 1px solid var(--qz-line);
    border-radius: 8px;
    margin-bottom: 16px;
}

/* внутри обложки блок готовности становится её нижней полосой */
.qz-cover .qz-readiness {
    margin: 0 -26px;
    border: 0;
    border-top: 1px solid var(--qz-line);
    border-radius: 0;
    background: var(--qz-brand-soft);
    padding: 14px 26px;
}

.qz-readiness__bar {
    display: block;
    height: 6px;
    max-width: 320px;
    margin-top: 8px;
    border-radius: 99px;
    background: rgba(28, 114, 51, .14);
    overflow: hidden;
}

.qz-readiness__bar i {
    display: block;
    width: 0;
    height: 100%;
    border-radius: 99px;
    background: var(--qz-brand);
    transition: width .8s cubic-bezier(.2, .8, .2, 1);
}

.qz-readiness__value {
    font-family: var(--qz-mono);
    font-size: 1.9rem;
    font-weight: 600;
    line-height: 1;
    color: var(--qz-brand-deep);
    font-variant-numeric: tabular-nums;
}

.qz-readiness__text {
    flex: 1 1 220px;
    font-size: .86rem;
    color: var(--qz-ink-2);
}

.qz-readiness__text b {
    color: var(--qz-ink);
}

.qz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(196px, 1fr));
    gap: 10px;
}

.qz-tile {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 11px;
    align-items: center;
    padding: 12px 13px;
    border: 1px solid var(--qz-line);
    border-radius: 8px;
    background: var(--qz-surface);
    text-decoration: none;
    color: inherit;
}

.qz-tile:hover {
    border-color: var(--qz-line-strong);
    color: inherit;
}

.qz-tile.is-due {
    border-color: rgba(143, 106, 16, .45);
    background: var(--qz-amber-soft);
}

.qz-tile__n {
    display: block;
    font-family: var(--qz-mono);
    font-size: .68rem;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--qz-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qz-tile__s {
    display: -webkit-box;
    font-size: .82rem;
    line-height: 1.3;
    overflow: hidden;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.qz-ring {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    flex: none;
    display: grid;
    place-items: center;
    background: conic-gradient(var(--qz-brand) var(--qz-p, 0%), var(--qz-surface-2) 0);
}

.qz-ring::after {
    content: attr(data-value);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--qz-surface);
    display: grid;
    place-items: center;
    font-family: var(--qz-mono);
    font-size: .62rem;
    font-weight: 600;
    color: var(--qz-ink-2);
    font-variant-numeric: tabular-nums;
}

/* На янтарной плитке серая дорожка кольца сливалась с фоном — берём янтарную. */
.qz-tile.is-due .qz-ring {
    background: conic-gradient(var(--qz-brand) var(--qz-p, 0%), rgb(255 250 239) 0);
}

.qz-tile.is-due .qz-ring::after {
    background: var(--qz-amber-soft);
    color: var(--qz-amber);
}

.qz-more {
    margin-top: 12px;
    font-size: .86rem;
}

.qz-more a {
    text-decoration: none;
    font-weight: 600;
}

.qz-more a:hover {
    text-decoration: underline;
}

.qz-book__head h2 a {
    color: inherit;
    text-decoration: none;
}

.qz-book__head h2 a:hover {
    color: var(--qz-brand-deep);
}

/* ── список пособий в разделе ───────────────────────────────────── */

.qz-books {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 12px;
}

.qz-book-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 16px;
    align-items: center;
    padding: 16px 18px;
    border: 1px solid var(--qz-line);
    border-radius: 12px;
    background: var(--qz-surface);
    text-decoration: none;
    color: inherit;
    transition: border-color .18s, box-shadow .18s, transform .18s;
}

.qz-book-card:hover {
    border-color: var(--qz-line-strong);
    box-shadow: var(--qz-shadow);
    transform: translateY(-1px);
    color: inherit;
}

.qz-book-card__cover {
    width: 56px;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 4px 12px -6px rgba(22, 33, 28, .45);
}

.qz-book-card__cover--empty {
    display: block;
    height: 76px;
    background: var(--qz-surface-2);
}

.qz-book-card__cover-wrap {
    position: relative;
    display: block;
}

.qz-book-card__cover-wrap > .qz-book-card__cover {
    display: block;
}

.qz-book-card__cover-wrap .book-level-badge {
    top: 3px;
    right: 3px;
    width: 18px;
    height: 18px;
    border-width: 1.5px;
}

.qz-book-card__body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.qz-book-card .qz-eyebrow {
    margin-bottom: 2px;
}

.qz-book-card__title {
    font-family: var(--qz-display);
    font-weight: 600;
    font-size: 1.1rem;
    line-height: 1.25;
    color: var(--qz-ink);
}

.qz-book-card__note {
    font-size: .84rem;
    color: var(--qz-ink-2);
}

.qz-book-card__meta {
    margin-top: 4px;
    font-family: var(--qz-mono);
    font-size: .74rem;
    color: var(--qz-muted);
}

.qz-book-card__arrow {
    color: var(--qz-line-strong);
    font-size: 1.2rem;
    transition: color .18s, transform .18s;
}

.qz-book-card:hover .qz-book-card__arrow {
    color: var(--qz-brand-deep);
    transform: translateX(3px);
}

/* ── выбор режима ───────────────────────────────────────────────── */

.qz-modes {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 18px;
}

.qz-mode {
    border: 1px solid var(--qz-line);
    background: var(--qz-surface);
    border-radius: 999px;
    padding: 8px 16px;
    font: inherit;
    font-size: .85rem;
    color: var(--qz-ink-2);
    cursor: pointer;
    transition: background-color .18s, border-color .18s, color .18s, transform .12s;
}

.qz-mode:hover {
    border-color: var(--qz-line-strong);
}

.qz-mode:active {
    transform: scale(.97);
}

.qz-mode.is-active {
    background: var(--qz-brand-soft);
    border-color: var(--qz-brand);
    color: var(--qz-brand-deep);
    font-weight: 600;
}

.qz-modes--book {
    margin-bottom: 14px;
}

/* два основных режима — один сегментированный переключатель в ряд */
.qz-seg {
    display: inline-flex;
    padding: 3px;
    border: 1px solid var(--qz-line);
    border-radius: 999px;
    background: var(--qz-surface);
}

.qz-seg .qz-mode {
    border: 0;
    background: transparent;
    padding: 7px 14px;
}

.qz-seg .qz-mode.is-active {
    background: var(--qz-brand-soft);
    box-shadow: inset 0 0 0 1px var(--qz-brand);
}

.qz-mode--errors {
    border-color: rgba(176, 70, 58, .4);
    color: var(--qz-rust);
    animation: qz-pop .3s ease-out;
}

.qz-mode--errors.is-active {
    background: var(--qz-rust-soft);
    border-color: var(--qz-rust);
    color: var(--qz-rust);
}

.qz-mode--errors[hidden] {
    display: none;
}

/* ── шапка страницы теста: сворачивается на время прохождения ───── */

.qz-crumbs--line {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qz-lead--tight {
    margin-bottom: 12px;
}

.qz-intro {
    margin-bottom: 16px;
    font-size: .92rem;
    color: var(--qz-ink-2);
    max-width: 68ch;
}

.qz-intro summary {
    cursor: pointer;
    color: var(--qz-brand-deep);
    font-size: .86rem;
    font-weight: 600;
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    user-select: none;
}

.qz-intro summary::-webkit-details-marker {
    display: none;
}

.qz-intro summary::before {
    content: "";
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    transition: transform .2s;
    margin-top: -2px;
}

.qz-intro[open] summary::before {
    transform: rotate(45deg);
}

.qz-intro p {
    margin-top: 8px;
    animation: qz-rise .25s ease-out;
}

.qz-hero-block {
    display: grid;
    grid-template-rows: 1fr;
    transition: grid-template-rows .32s ease, opacity .25s ease;
}

.qz-hero-block__inner {
    min-height: 0;
    overflow: hidden;
}

.qz-hero-block.is-collapsed {
    grid-template-rows: 0fr;
    opacity: 0;
    pointer-events: none;
}

/* компактная строка над плеером */
.qz-strip {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 12px;
    padding: 8px 0;
    background: transparent;
    font-size: .84rem;
    color: var(--qz-muted);
    animation: qz-drop .25s ease-out;
}

.qz-strip[hidden] {
    display: none;
}

.qz-strip__back,
.qz-body .qz-strip__back {
    flex: none;
    display: grid;
    place-items: center;
    text-decoration: none;
    width: 34px;
    height: 34px;
    border: 1px solid var(--qz-line);
    border-radius: 50%;
    background: var(--qz-surface);
    color: var(--qz-ink-2);
    font: inherit;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    transition: border-color .15s, transform .12s;
}

.qz-strip__back svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.qz-strip__back:hover {
    border-color: var(--qz-line-strong);
}

.qz-strip__back:active {
    transform: scale(.94);
}

.qz-strip__title {
    flex: 1 1 auto;
    min-width: 0;
    color: var(--qz-ink);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qz-strip__mode {
    flex: none;
    white-space: nowrap;
}

.qz-strip__mode:empty {
    display: none;
}

.qz-strip__score {
    flex: none;
    display: inline-flex;
    gap: 6px;
    font-family: var(--qz-mono);
    font-variant-numeric: tabular-nums;
    font-size: .8rem;
}

.qz-strip__score:empty {
    display: none;
}

.qz-strip__score b {
    font-weight: 600;
    padding: 1px 7px;
    border-radius: 99px;
}

.qz-strip__score .is-ok { color: var(--qz-brand-deep); background: var(--qz-brand-soft); }
.qz-strip__score .is-no { color: var(--qz-rust); background: var(--qz-rust-soft); }

.qz-strip__count {
    flex: none;
    font-family: var(--qz-mono);
    font-variant-numeric: tabular-nums;
    color: var(--qz-ink-2);
}

.qz-mode__hint {
    flex-basis: 100%;
    font-size: .83rem;
    color: var(--qz-muted);
}

/* ── карточка вопроса ───────────────────────────────────────────── */

.qz-card {
    border: 1px solid var(--qz-line);
    border-radius: 10px;
    background: var(--qz-surface);
    box-shadow: var(--qz-shadow);
    padding: 22px 24px 0;
    animation: qz-rise .28s ease-out;
    /* карточка не должна «прыгать» по высоте от вопроса к вопросу */
    min-height: 420px;
    display: flex;
    flex-direction: column;
}

.qz-card > :not(.qz-foot) {
    flex: none;
}

/* воздух между содержимым вопроса и закреплённой панелью */
.qz-card > :nth-last-child(2):not(.qz-foot) {
    margin-bottom: 22px;
}

.qz-card--result {
    padding-bottom: 24px;
    min-height: 0;
    display: block;
}

.qz-card.is-answered-ok {
    animation: qz-rise .28s ease-out, qz-glow-ok .6s ease-out;
}

.qz-card.is-answered-no {
    animation: qz-rise .28s ease-out, qz-glow-no .6s ease-out;
}

/* Строка «режим · вопрос N из M · счёт» живёт в полоске над карточкой. */
.qz-card .qz-top {
    display: none;
}

.qz-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    font-size: .78rem;
    color: var(--qz-muted);
}

.qz-top b {
    color: var(--qz-ink);
    font-weight: 600;
}

.qz-timer {
    font-family: var(--qz-mono);
    font-variant-numeric: tabular-nums;
}

.qz-timer.is-low {
    color: var(--qz-rust);
    font-weight: 600;
}

.qz-pips {
    display: flex;
    gap: 4px;
    margin: 0 0 22px;
}

.qz-pips i {
    height: 4px;
    flex: 1;
    border-radius: 99px;
    background: var(--qz-line);
}

.qz-pips i {
    transition: background-color .3s;
}

.qz-pips i.is-ok { background: var(--qz-brand); }
.qz-pips i.is-no { background: var(--qz-rust); }
.qz-pips i.is-now { background: var(--qz-ink-2); }

/* в повторении над вопросом — из какого билета он пришёл */
.qz-source {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 8px;
    align-items: baseline;
    margin-bottom: 10px;
    font-size: .84rem;
    color: var(--qz-muted);
    animation: qz-rise .3s ease-out;
}

.qz-source b {
    font-family: var(--qz-mono);
    font-size: .74rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--qz-brand-deep);
    background: var(--qz-brand-soft);
    border-radius: 99px;
    padding: 2px 9px;
}

.qz-kind {
    display: inline-block;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--qz-muted);
    border: 1px solid var(--qz-line);
    border-radius: 99px;
    padding: 3px 10px;
    margin-bottom: 12px;
    width: max-content;
}

.qz-prompt {
    font-family: var(--qz-display);
    font-size: 1.24rem;
    font-weight: 600;
    line-height: 1.35;
    text-wrap: balance;
    margin-bottom: 18px;
}

.qz-opts {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
}

.qz-opt > span:not(.qz-opt__mark):not(.qz-opt__tail) {
    flex: 1 1 auto;
    min-width: 0;
}

.qz-opt {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    text-align: left;
    padding: 13px 16px;
    border: 1px solid var(--qz-line);
    border-radius: 8px;
    background: var(--qz-surface);
    font: inherit;
    font-size: .94rem;
    color: var(--qz-ink);
    cursor: pointer;
}

.qz-opt:hover:not([disabled]) {
    border-color: var(--qz-line-strong);
}

.qz-opt:active:not([disabled]) {
    transform: scale(.985);
}

.qz-opts .qz-opt {
    animation: qz-rise .3s ease-out both;
    transition: border-color .18s, background-color .18s, transform .12s, opacity .25s, padding .25s;
}

.qz-opts .qz-opt:nth-child(2) { animation-delay: .04s; }
.qz-opts .qz-opt:nth-child(3) { animation-delay: .08s; }
.qz-opts .qz-opt:nth-child(4) { animation-delay: .12s; }
.qz-opts .qz-opt:nth-child(5) { animation-delay: .16s; }
.qz-opts .qz-opt:nth-child(n+6) { animation-delay: .2s; }

/* после ответа лишние варианты сворачиваются в одну строку */
.qz-opt.is-dim {
    opacity: .55;
    padding-top: 6px;
    padding-bottom: 6px;
    font-size: .84rem;
}

.qz-opt.is-dim > span:not(.qz-opt__mark) {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.qz-opt.is-dim .qz-opt__mark {
    width: 18px;
    height: 18px;
    font-size: .64rem;
}

.qz-opt.is-correct {
    animation: qz-pulse-ok .5s ease-out;
}

.qz-opt.is-wrong {
    animation: qz-shake .4s ease-out;
}

.qz-opt__mark {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1.5px solid var(--qz-line-strong);
    flex: none;
    display: grid;
    place-items: center;
    font-size: .72rem;
    font-weight: 700;
    color: var(--qz-muted);
}

.qz-opt.is-picked {
    border-color: var(--qz-brand);
    background: var(--qz-brand-soft);
}

.qz-opt.is-picked .qz-opt__mark {
    border-color: var(--qz-brand);
    color: var(--qz-brand-deep);
}

.qz-opt.is-correct {
    border-color: var(--qz-brand);
    background: var(--qz-brand-soft);
}

.qz-opt.is-correct .qz-opt__mark {
    border-color: var(--qz-brand);
    background: var(--qz-brand);
    color: #fff;
}

.qz-opt.is-wrong {
    border-color: var(--qz-rust);
    background: var(--qz-rust-soft);
}

.qz-opt.is-wrong .qz-opt__mark {
    border-color: var(--qz-rust);
    background: var(--qz-rust);
    color: #fff;
}

.qz-opt__tail {
    margin-left: auto;
    font-size: .76rem;
    font-weight: 600;
    white-space: nowrap;
}

.qz-opt.is-correct .qz-opt__tail { color: var(--qz-brand-deep); }
.qz-opt.is-wrong .qz-opt__tail { color: var(--qz-rust); }

/* соотнесение: строки слева, чипы с ответами снизу */
.qz-match {
    display: grid;
    gap: 14px;
}

.qz-match__list {
    display: grid;
    gap: 8px;
}

.qz-match__row {
    display: flex;
    flex-direction: column;
    gap: 3px;
    width: 100%;
    text-align: left;
    padding: 10px 14px;
    border: 1px solid var(--qz-line);
    border-radius: 8px;
    background: var(--qz-surface);
    font: inherit;
    color: var(--qz-ink);
    cursor: pointer;
    animation: qz-rise .3s ease-out both;
    transition: border-color .18s, background-color .18s, box-shadow .18s;
}

.qz-match__row.is-selected {
    border-color: var(--qz-brand);
    box-shadow: 0 0 0 3px rgba(49, 182, 71, .18);
}

.qz-match__row.is-filled {
    background: var(--qz-surface-2);
}

.qz-match__row.is-correct { border-color: var(--qz-brand); background: var(--qz-brand-soft); }
.qz-match__row.is-wrong { border-color: var(--qz-rust); background: var(--qz-rust-soft); }

.qz-match__left {
    font-size: .94rem;
    font-weight: 500;
}

.qz-match__slot {
    font-size: .84rem;
    color: var(--qz-muted);
    font-style: italic;
}

.qz-match__row.is-filled .qz-match__slot {
    color: var(--qz-brand-deep);
    font-style: normal;
    animation: qz-pop .25s ease-out;
}

.qz-match__row.is-wrong .qz-match__slot {
    color: var(--qz-rust);
    text-decoration: line-through;
}

.qz-match__answer {
    font-size: .8rem;
    color: var(--qz-brand-deep);
}

.qz-match__pool {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px dashed var(--qz-line-strong);
}

.qz-chip {
    border: 1px solid var(--qz-line-strong);
    border-radius: 999px;
    padding: 8px 14px;
    background: var(--qz-surface);
    font: inherit;
    font-size: .88rem;
    color: var(--qz-ink);
    cursor: pointer;
    text-align: left;
    animation: qz-pop .3s ease-out both;
    transition: opacity .2s, transform .2s, border-color .15s, background-color .15s;
}

.qz-chip:hover:not(.is-used) {
    border-color: var(--qz-brand);
    background: var(--qz-brand-soft);
}

.qz-chip:active {
    transform: scale(.96);
}

.qz-chip.is-used {
    opacity: 0;
    transform: scale(.8);
    pointer-events: none;
    position: absolute;
    visibility: hidden;
}

.qz-input {
    width: 100%;
    border: 1px solid var(--qz-line-strong);
    border-radius: 7px;
    padding: 9px 11px;
    font: inherit;
    font-size: .92rem;
    background: var(--qz-surface);
    color: var(--qz-ink);
}

.qz-pair__answer {
    grid-column: 1 / -1;
    font-size: .8rem;
    color: var(--qz-brand-deep);
}

/* хронология */
.qz-order {
    display: grid;
    gap: 8px;
}

.qz-order__item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    border: 1px solid var(--qz-line);
    border-radius: 8px;
    background: var(--qz-surface);
    font-size: .94rem;
}

.qz-order__item.is-correct { border-color: var(--qz-brand); background: var(--qz-brand-soft); }
.qz-order__item.is-wrong { border-color: var(--qz-rust); background: var(--qz-rust-soft); }

.qz-order__num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--qz-surface-2);
    display: grid;
    place-items: center;
    font-family: var(--qz-mono);
    font-size: .68rem;
    font-weight: 600;
    color: var(--qz-muted);
    flex: none;
}

.qz-order__text {
    flex: 1;
    min-width: 0;
}

.qz-order__move {
    display: flex;
    gap: 4px;
    flex: none;
}

.qz-move {
    width: 28px;
    height: 28px;
    border: 1px solid var(--qz-line);
    border-radius: 6px;
    background: var(--qz-surface);
    color: var(--qz-muted);
    font-size: .85rem;
    line-height: 1;
    cursor: pointer;
}

.qz-move:hover:not([disabled]) {
    border-color: var(--qz-line-strong);
    color: var(--qz-ink);
}

.qz-move[disabled] {
    opacity: .35;
    cursor: default;
}

/* пропуск в тексте */
.qz-cloze {
    font-family: var(--qz-display);
    font-size: 1.14rem;
    font-weight: 600;
    line-height: 2.1;
}

.qz-cloze .qz-input {
    display: inline-block;
    width: auto;
    min-width: 140px;
    padding: 4px 10px;
    font-family: var(--qz-body);
    font-size: .95rem;
    font-weight: 400;
}

.qz-cloze mark {
    background: var(--qz-brand-soft);
    color: var(--qz-brand-deep);
    border-radius: 4px;
    padding: 2px 8px;
}

.qz-cloze mark.is-wrong {
    background: var(--qz-rust-soft);
    color: var(--qz-rust);
}

/* ── разбор ─────────────────────────────────────────────────────── */

.qz-review {
    animation: qz-rise .3s ease-out;
    margin-top: 18px;
    border: 1px solid var(--qz-line);
    border-radius: 8px;
    overflow: hidden;
}

.qz-review__head {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 12px 16px;
    background: var(--qz-surface-2);
    border-bottom: 1px solid var(--qz-line);
    font-size: .82rem;
    font-weight: 600;
}

.qz-review__head.is-ok {
    color: var(--qz-brand-deep);
    background: var(--qz-brand-soft);
    border-bottom-color: rgba(49, 182, 71, .3);
}

.qz-review__head.is-no {
    color: var(--qz-rust);
    background: var(--qz-rust-soft);
    border-bottom-color: rgba(176, 70, 58, .28);
}

.qz-review__body {
    padding: 15px 16px;
    font-size: .9rem;
    line-height: 1.62;
    color: var(--qz-ink-2);
}

.qz-fragment {
    margin-top: 13px;
    padding: 12px 15px;
    border-left: 3px solid var(--qz-brand);
    background: var(--qz-brand-soft);
    border-radius: 0 6px 6px 0;
    font-size: .87rem;
    color: var(--qz-ink);
}

.qz-fragment span {
    display: block;
    font-size: .74rem;
    color: var(--qz-muted);
    margin-top: 7px;
}

.qz-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--qz-line);
}

/* панель с кнопкой прилипает к нижнему краю экрана, пока карточка на виду */
.qz-foot--dock {
    position: sticky;
    bottom: 0;
    z-index: 4;
    margin: auto -24px 0;
    padding: 12px 24px 16px;
    background: var(--qz-surface);
    border-radius: 0 0 10px 10px;
    box-shadow: 0 -8px 16px -12px rgba(22, 33, 28, .25);
}

.qz-foot--dock .qz-timer {
    font-size: 1rem;
    font-weight: 600;
    color: var(--qz-ink);
    margin-right: auto;
}

.qz-foot--dock .qz-timer + small:empty {
    display: none;
}

.qz-btn:active:not([disabled]) {
    transform: scale(.98);
}

.qz-foot small {
    font-size: .78rem;
    color: var(--qz-muted);
}

/* ── итог ───────────────────────────────────────────────────────── */

.qz-result {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 30px;
    align-items: center;
}

.qz-score {
    text-align: center;
    padding: 6px 12px;
}

.qz-score__value {
    font-family: var(--qz-mono);
    font-size: 3.2rem;
    font-weight: 600;
    line-height: 1;
    color: var(--qz-brand-deep);
    font-variant-numeric: tabular-nums;
}

.qz-score__value.is-low {
    color: var(--qz-rust);
}

.qz-score {
    animation: qz-pop .45s cubic-bezier(.2, .9, .3, 1.2);
}

.qz-score__note {
    font-size: .8rem;
    color: var(--qz-muted);
    margin-top: 6px;
}

.qz-bars {
    display: grid;
    gap: 11px;
    margin-top: 12px;
}

.qz-bar-row {
    display: grid;
    grid-template-columns: minmax(90px, 150px) minmax(0, 1fr) 44px;
    gap: 12px;
    align-items: center;
    font-size: .84rem;
}

.qz-bar {
    height: 8px;
    border-radius: 99px;
    background: var(--qz-surface-2);
    overflow: hidden;
}

.qz-bar i {
    display: block;
    height: 100%;
    border-radius: 99px;
    background: var(--qz-brand);
    transition: width .7s cubic-bezier(.2, .8, .2, 1);
}

.qz-bar i.is-mid { background: var(--qz-amber); }
.qz-bar i.is-low { background: var(--qz-rust); }

.qz-bar-row__value {
    font-family: var(--qz-mono);
    font-size: .8rem;
    text-align: right;
    color: var(--qz-muted);
    font-variant-numeric: tabular-nums;
}

.qz-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.qz-empty {
    padding: 26px;
    text-align: center;
    color: var(--qz-muted);
    background: var(--qz-surface);
    border: 1px dashed var(--qz-line-strong);
    border-radius: 10px;
}

/* ── кнопка теста на странице материала ─────────────────────────── */
/* Живёт в общем layout сайта, поэтому шрифт наследует от страницы. */

.qz-cta {
    display: flex;
    align-items: center;
    gap: 16px 18px;
    flex-wrap: wrap;
    margin: 20px 0 8px;
    padding: 16px 20px;
    background: var(--qz-brand-soft);
    border-radius: 12px;
    box-sizing: border-box;
}

.qz-cta--bottom {
    margin: 28px 0 12px;
}

.qz-cta * {
    box-sizing: border-box;
}

.qz-cta__ring {
    width: 46px;
    height: 46px;
    flex: none;
}

.qz-cta__ring::after {
    width: 36px;
    height: 36px;
    font-size: .7rem;
}

.qz-cta__text {
    flex: 1 1 220px;
    min-width: 0;
}

.qz-cta__text strong {
    display: block;
    font-size: 1rem;
    line-height: 1.3;
    color: var(--qz-ink);
}

.qz-cta__text small {
    display: block;
    margin-top: 2px;
    font-size: .82rem;
    line-height: 1.4;
    color: var(--qz-ink-2);
}

.qz-cta__actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    flex: none;
}

.qz-cta .qz-btn {
    text-decoration: none;
}

@media (max-width: 560px) {
    .qz-cta {
        padding: 14px 16px;
    }

    .qz-cta__actions {
        flex: 1 1 100%;
    }

    .qz-cta__actions .qz-btn {
        flex: 1 1 auto;
        justify-content: center;
    }
}

/* ── вход через Telegram ─────────────────────────────────────────── */

.qz-account {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px 18px;
    flex-wrap: wrap;
    padding: 14px 26px;
    border-top: 1px solid var(--qz-line);
    background: var(--qz-surface);
    animation: qz-rise .3s ease-out;
}

.qz-cover .qz-account {
    margin: 0 -26px;
}

.qz-account[hidden] {
    display: none;
}

.qz-account__who {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1 1 260px;
    min-width: 0;
}

.qz-account__who b {
    display: block;
    font-size: .92rem;
    color: var(--qz-ink);
}

.qz-account__who small {
    display: block;
    font-size: .8rem;
    color: var(--qz-muted);
}

.qz-account--result {
    margin: 18px -24px -24px;
    border-radius: 0 0 10px 10px;
    background: var(--qz-brand-soft);
}

.qz-toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    z-index: 20;
    transform: translateX(-50%);
    max-width: calc(100% - 32px);
    padding: 12px 18px;
    border-radius: 10px;
    background: var(--qz-ink);
    color: #fff;
    font-size: .88rem;
    box-shadow: 0 12px 30px -12px rgba(22, 33, 28, .6);
    animation: qz-rise .3s ease-out;
    transition: opacity .5s;
}

.qz-toast.is-ok { background: var(--qz-brand-deep); }
.qz-toast.is-no { background: var(--qz-rust); }
.qz-toast.is-hiding { opacity: 0; }

/* ── анимации ───────────────────────────────────────────────────── */

@keyframes qz-rise {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: none; }
}

@keyframes qz-drop {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: none; }
}

@keyframes qz-pop {
    from { opacity: 0; transform: scale(.92); }
    to { opacity: 1; transform: none; }
}

@keyframes qz-pulse-ok {
    0% { box-shadow: 0 0 0 0 rgba(49, 182, 71, .45); }
    100% { box-shadow: 0 0 0 12px rgba(49, 182, 71, 0); }
}

@keyframes qz-shake {
    0%, 100% { transform: none; }
    25% { transform: translateX(-4px); }
    50% { transform: translateX(4px); }
    75% { transform: translateX(-2px); }
}

@keyframes qz-glow-ok {
    0% { border-color: var(--qz-brand); }
    100% { border-color: var(--qz-line); }
}

@keyframes qz-glow-no {
    0% { border-color: var(--qz-rust); }
    100% { border-color: var(--qz-line); }
}

/* ── адаптив ────────────────────────────────────────────────────── */

@media (max-width: 720px) {
    .qz-wrap { padding: 0 16px; }
    .qz-main { padding: 22px 0 48px; }
    .qz-cover { padding: 14px 16px 0; border-radius: 12px; margin-bottom: 18px; }
    .qz-cover .qz-crumbs { margin-bottom: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .qz-cover__main { grid-template-columns: auto minmax(0, 1fr); gap: 14px 16px; padding-bottom: 16px; }
    .qz-cover__main > .qz-cover__text:first-child { grid-column: 1 / -1; }
    .qz-cover__img { width: 56px; }
    .qz-cover__img .book-level-badge { top: 3px; right: 3px; width: 18px; height: 18px; border-width: 1.5px; }
    .qz-facts { grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); gap: 8px; padding-top: 14px; border-top: 1px dashed var(--qz-line-strong); }
    .qz-facts b { font-size: 1.15rem; }
    .qz-facts span { font-size: .68rem; }
    .qz-cover .qz-readiness { margin: 0 -16px; padding: 14px 16px; }
    .qz-cover .qz-account { margin: 0 -16px; padding: 14px 16px; }
    .qz-account--result { margin: 18px -15px -18px; }

    .qz-books { grid-template-columns: 1fr; }
    .qz-card { padding: 16px 15px 0; min-height: 48vh; }
    .qz-card--result { padding-bottom: 18px; min-height: 0; }
    .qz-foot--dock { margin-left: -15px; margin-right: -15px; padding: 10px 15px 12px; }
    .qz-strip { margin-left: -16px; margin-right: -16px; padding-left: 16px; padding-right: 16px; }
    .qz-seg { display: flex; width: 100%; }
    .qz-seg .qz-mode { flex: 1; padding-left: 8px; padding-right: 8px; text-align: center; }
    .qz-mode--errors { width: 100%; text-align: center; }
    .qz-prompt { font-size: 1.1rem; }
    .qz-cloze { font-size: 1.02rem; line-height: 2; }
    .qz-result { grid-template-columns: 1fr; gap: 16px; }
    .qz-bar-row { grid-template-columns: minmax(80px, 110px) minmax(0, 1fr) 40px; }
    .qz-score__value { font-size: 2.6rem; }
}

/* ── режим приложения: прохождение теста на телефоне ────────────── */
/* Пока идёт тест, страница выглядит как экран приложения: шапка и подвал
   сайта спрятаны, карточка занимает всю высоту, панель с кнопкой у большого
   пальца, счёт и прогресс в тонкой строке сверху. */
@media (max-width: 720px) {
    body.qz-app .qz-top-bar,
    body.qz-app .qz-footer,
    body.qz-app .qz-hero-block {
        display: none;
    }

    body.qz-app .qz-main {
        padding: 0;
    }

    body.qz-app .qz-wrap {
        padding: 0;
    }

    body.qz-app .qz-strip {
        position: sticky;
        top: 0;
        z-index: 5;
        margin: 0;
        padding: 10px 16px;
        padding-top: calc(10px + env(safe-area-inset-top));
        background: var(--qz-surface);
        border-bottom: 1px solid var(--qz-line);
    }

    body.qz-app .qz-card {
        border: 0;
        border-radius: 0;
        box-shadow: none;
        padding: 18px 16px 0;
        min-height: calc(100vh - 55px);
        min-height: calc(100dvh - 55px);
    }

    body.qz-app .qz-pips {
        margin-top: 0;
    }

    body.qz-app .qz-foot--dock {
        margin-left: -16px;
        margin-right: -16px;
        padding: 10px 16px;
        padding-bottom: calc(12px + env(safe-area-inset-bottom));
        border-radius: 0;
    }

    body.qz-app .qz-empty {
        border-radius: 0;
        border-left: 0;
        border-right: 0;
    }
}

/* Пальцем по экрану: увеличиваем цели нажатия и растягиваем главные кнопки. */
@media (max-width: 480px) {
    .qz-btn { min-height: 44px; }
    .qz-mode { min-height: 40px; }

    .qz-move {
        width: 36px;
        height: 36px;
    }

    .qz-readiness [data-qz-repeat],
    .qz-actions,
    .qz-actions .qz-btn,
    .qz-foot > .qz-btn {
        width: 100%;
    }

    .qz-foot { gap: 10px; }
    .qz-foot--dock .qz-btn--primary { width: 100%; }
    .qz-foot--dock small:empty { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .qz-body *,
    .qz-cta * {
        transition: none !important;
        animation: none !important;
    }
}