main.task-detail-page {
    width: min(calc(100% - 48px), 1180px);
    max-width: 1180px;
    margin: 24px auto;
    padding: 0;
    overflow: hidden;
    border-radius: 18px;
}

.task-detail {
    min-width: 0;
    background: var(--color-surface);
}

.task-detail__topbar {
    display: flex;
    min-height: 62px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 10px 28px;
    border-bottom: 1px solid var(--color-border);
}

.task-detail__back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-secondary);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
}

.task-detail__back span { color: var(--color-accent); font-size: 18px; }
.task-detail__back:hover { color: var(--color-text); }
.task-detail__save-form { flex: 0 0 auto; margin: 0; }

.task-detail__save-button {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0 14px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}

.task-detail__save-button:hover,
.task-detail__save-button--active {
    border-color: var(--color-accent-border);
    background: var(--color-accent-light);
    color: var(--color-accent-active);
}

.task-detail__save-button span { color: var(--color-accent); font-size: 17px; }

.task-detail__hero {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) 68px;
    min-height: 154px;
    align-items: center;
    gap: 28px;
    padding: 26px 32px;
    border-bottom: 1px solid var(--color-accent-light-secondary);
    background: var(--color-accent-light);
}

.task-detail__program { color: var(--color-accent); font-size: 12px; font-weight: 800; }

.task-detail__heading h1 {
    max-width: 780px;
    margin: 7px 0 0;
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.08;
    letter-spacing: -0.04em;
}

.task-detail__heading p { margin: 10px 0 0; color: var(--color-text-secondary); font-size: 14px; }

.task-detail__hero-mark {
    display: grid;
    width: 68px;
    height: 68px;
    border: 1px solid var(--color-accent-light-secondary);
    border-radius: 16px;
    background: var(--color-surface);
    font-size: 30px;
    place-items: center;
    transform: rotate(2deg);
}

.task-detail__workspace { display: grid; grid-template-columns: minmax(0, 1fr) 330px; align-items: start; }
.task-detail__main { min-width: 0; padding: 30px 32px 34px; }

.task-detail__rail {
    position: sticky;
    top: 84px;
    min-width: 0;
    padding: 26px;
    border-left: 1px solid var(--color-border);
    background: var(--color-background);
}

.task-section-heading { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 24px; }

.task-section-heading__number {
    display: grid;
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    color: var(--color-accent-active);
    border: 1px solid var(--color-accent-border);
    border-radius: 10px;
    background: var(--color-accent-light);
    font-size: 16px;
    font-weight: 800;
    place-items: center;
}

.task-section-heading h2 { margin: 0; font-size: 21px; }
.task-section-heading p { margin: 3px 0 0; color: var(--color-text-secondary); font-size: 12px; }
.task-question__text { color: var(--color-text); font-size: 17px; line-height: 1.8; }
.task-content-blocks { display: grid; gap: 20px; }
.task-content-block--text { min-width: 0; overflow-wrap: anywhere; }
.task-content-block--image { margin: 0; }

.task-content-block--image img {
    display: block;
    width: auto;
    max-width: 100%;
    max-height: 680px;
    object-fit: contain;
    object-position: left center;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
}

.task-content-block--image figcaption { margin-top: 8px; color: var(--color-text-secondary); font-size: 12px; line-height: 1.5; }
.task-detail__progress, .task-answer, .task-detail__tip { border-radius: 14px; }

.task-detail__progress {
    margin-bottom: 16px;
    padding: 16px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.task-detail__progress-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.task-detail__progress-heading span { color: var(--color-text-secondary); font-size: 11px; font-weight: 700; }
.task-detail__progress-heading strong { font-family: "JetBrains Mono", monospace; font-size: 13px; }

.task-detail__progress progress {
    display: block;
    width: 100%;
    height: 6px;
    overflow: hidden;
    border: 0;
    border-radius: 999px;
    background: var(--color-surface-secondary);
    accent-color: var(--color-accent);
}

.task-detail__progress progress::-webkit-progress-bar { background: var(--color-surface-secondary); }
.task-detail__progress progress::-webkit-progress-value, .task-detail__progress progress::-moz-progress-bar { background: var(--color-accent); }
.task-detail__progress p { margin: 9px 0 0; color: var(--color-text-secondary); font-size: 10px; }

.task-answer {
    padding: 18px;
    border: 1px solid var(--color-accent-border);
    background: var(--color-surface);
    box-shadow: 0 8px 24px var(--color-accent-glow);
}

.task-answer__heading { display: flex; align-items: flex-start; gap: 10px; }

.task-answer__heading > span {
    display: grid;
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    color: var(--color-accent-active);
    border-radius: 10px;
    background: var(--color-accent-light);
    font-size: 18px;
    place-items: center;
}

.task-answer h2 { margin: 0; font-size: 18px; }
.task-answer__heading p { margin: 2px 0 0; color: var(--color-text-secondary); font-size: 11px; }
.answer-form { margin-top: 18px; }
.answer-form label { margin-bottom: 7px; font-size: 12px; }

.answer-form input {
    width: 100%;
    min-height: 48px;
    padding: 10px 12px;
    border-radius: 10px;
    font-family: "JetBrains Mono", monospace;
    font-size: 16px;
}

.answer-form__error { display: block; margin-top: 6px; color: var(--color-error); font-size: 11px; }

.answer-form button {
    display: flex;
    width: 100%;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 800;
}

.task-detail__tip {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 14px;
    padding: 13px 14px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.task-detail__tip span { font-size: 16px; }
.task-detail__tip p { margin: 0; color: var(--color-text-secondary); font-size: 10px; line-height: 1.5; }

.task-result {
    margin-top: 30px;
    padding: 22px;
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.task-result--correct { border-color: var(--color-success-border); background: var(--color-success-background); }
.task-result--incorrect { border-color: var(--color-error-border); background: var(--color-error-background); }
.task-result__summary { display: flex; align-items: flex-start; gap: 14px; }

.task-result__icon {
    display: grid;
    width: 40px;
    height: 40px;
    flex: 0 0 auto;
    border-radius: 12px;
    color: var(--color-on-status);
    font-size: 23px;
    font-weight: 800;
    place-items: center;
}

.task-result--correct .task-result__icon { background: var(--color-success); }
.task-result--incorrect .task-result__icon { background: var(--color-error); }
.task-result h2 { margin: 0; font-size: 20px; }
.task-result__summary p { margin: 4px 0 0; color: var(--color-text-secondary); font-size: 12px; }

.task-result__answer, .task-solution, .task-result__next {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
}

.task-result__answer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.task-result__answer span { color: var(--color-text-secondary); font-size: 12px; }

.task-result__answer code {
    padding: 7px 11px;
    border-radius: 8px;
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 15px;
}

.task-solution h3 { margin: 0 0 12px; font-size: 17px; }
.task-solution .task-content-block--text { color: var(--color-text); font-size: 14px; line-height: 1.7; }
.task-result__next { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.task-result__next > div { display: grid; gap: 3px; }
.task-result__next > div span { color: var(--color-text-secondary); font-size: 10px; font-weight: 700; }
.task-result__next strong { font-size: 13px; }

.task-result__next a {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 0 13px;
    border-radius: 10px;
    background: var(--color-accent);
    color: var(--color-on-primary);
    font-size: 12px;
    font-weight: 800;
    text-decoration: none;
    white-space: nowrap;
}

.task-result__next a:hover { background: var(--color-accent-hover); color: var(--color-on-primary); }
.task-result__next a:active, .task-detail__save-button:active, .answer-form button:active { transform: scale(0.98); }

@media (max-width: 900px) {
    .task-detail__workspace { grid-template-columns: 1fr; }
    .task-detail__rail { position: static; border-top: 1px solid var(--color-border); border-left: 0; }
    .task-detail__progress, .task-answer, .task-detail__tip { max-width: 620px; margin-right: auto; margin-left: auto; }
}

@media (max-width: 600px) {
    main.task-detail-page { width: calc(100% - 24px); margin: 12px auto; padding: 0; border-radius: 14px; }
    .task-detail__topbar { align-items: stretch; flex-direction: column; padding: 13px 16px; }
    .task-detail__save-button { width: 100%; justify-content: center; }
    .task-detail__hero { grid-template-columns: 1fr; min-height: 0; padding: 22px 20px; }
    .task-detail__hero-mark { display: none; }
    .task-detail__heading h1 { font-size: 30px; }
    .task-detail__main, .task-detail__rail { padding: 22px 18px; }
    .task-question__text { font-size: 16px; line-height: 1.7; }
    .task-result__answer, .task-result__next { align-items: flex-start; flex-direction: column; }
    .task-result__next a { width: 100%; box-sizing: border-box; }
}

@media (prefers-reduced-motion: reduce) {
    .task-result__next a, .task-detail__save-button, .answer-form button { transition: none; }
}