.academic-reading-app {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 26px 0 48px;
}

.academic-reading-engagement {
    margin-bottom: 18px;
}

.academic-reading-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: end;
    margin: 8px 0 28px;
}

.academic-reading-kicker,
.academic-reading-meta {
    margin: 0 0 4px;
    color: #5f6b7a;
    font-size: 13px;
}

.academic-reading-header h1 {
    margin: 0;
    font-size: 30px;
    line-height: 1.2;
    letter-spacing: 0;
}

.academic-reading-zh {
    margin-top: 4px;
    color: #475569;
    font-size: 16px;
}

.academic-reading-controls {
    display: grid;
    grid-template-columns: minmax(160px, 1fr) auto;
    gap: 12px;
    align-items: end;
    min-width: 320px;
}

.academic-reading-controls label:not(.academic-reading-toggle) {
    display: block;
    margin-bottom: 6px;
    color: #475569;
    font-size: 13px;
    font-weight: 700;
}

.academic-reading-controls select {
    min-height: 40px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 0 10px;
    background: #fff;
}

.academic-reading-toggle {
    display: flex;
    min-height: 40px;
    align-items: center;
    gap: 8px;
    color: #334155;
    font-size: 14px;
    font-weight: 700;
}

.academic-reading-toggle input {
    width: 18px;
    height: 18px;
}

#academicReadingTimer.urgent {
    color: #b91c1c;
}

.academic-reading-layout {
    display: grid;
    grid-template-columns: minmax(330px, 0.95fr) minmax(380px, 1.05fr);
    gap: 34px;
    align-items: start;
}

.academic-passage-card {
    background: #fff;
    border: 1px solid #cfd6df;
    border-radius: 8px;
    padding: 26px 30px;
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.08);
}

.academic-passage-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.academic-passage-meta-row span {
    border: 1px solid #d8dee9;
    border-radius: 999px;
    padding: 4px 9px;
    color: #475569;
    font-size: 12px;
    background: #f8fafc;
}

.academic-passage-card h2 {
    margin: 0 0 18px;
    font-size: 22px;
    line-height: 1.25;
    letter-spacing: 0;
}

.academic-passage-text p {
    margin: 0 0 14px;
    color: #111827;
    font-size: 15px;
    line-height: 1.62;
}

.academic-passage-text p:last-child {
    margin-bottom: 0;
}

.academic-question-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
    margin-bottom: 14px;
}

.academic-question-header h2 {
    margin: 0;
    font-size: 22px;
    letter-spacing: 0;
}

.academic-reading-question {
    border-bottom: 1px solid #e5e7eb;
    padding: 18px 0;
}

.academic-reading-question:first-child {
    padding-top: 0;
}

.academic-reading-question legend {
    font-weight: 700;
    font-size: 16px;
    line-height: 1.35;
    margin-bottom: 12px;
    letter-spacing: 0;
}

.academic-reading-choice {
    display: grid;
    grid-template-columns: 22px 28px 1fr;
    gap: 10px;
    align-items: start;
    padding: 8px 0;
    color: #111827;
    cursor: pointer;
}

.academic-reading-choice input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
}

.choice-letter {
    font-weight: 700;
    color: #334155;
}

.academic-reading-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}

.academic-reading-results {
    margin-top: 18px;
    border: 1px solid #d8dee9;
    border-radius: 8px;
    background: #f8fafc;
    padding: 16px;
}

.academic-reading-score {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: baseline;
    margin-bottom: 10px;
}

.academic-reading-results h3 {
    margin: 0;
    font-size: 18px;
    letter-spacing: 0;
}

.academic-reading-result {
    padding: 12px 0;
    border-top: 1px solid #e5e7eb;
}

.academic-reading-result strong {
    display: block;
    margin-bottom: 5px;
}

.academic-reading-result.correct strong {
    color: #166534;
}

.academic-reading-result.incorrect strong {
    color: #b91c1c;
}

.academic-reading-error {
    margin: 0 0 18px;
    padding: 12px 14px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.academic-reading-topic-dashboard {
    margin-bottom: 28px;
}

.academic-reading-loading {
    padding: 40px 12px;
    text-align: center;
    color: #64748b;
}

.hidden {
    display: none !important;
}

@media (max-width: 860px) {
    .academic-reading-app {
        width: min(100% - 20px, 720px);
        padding-top: 18px;
    }

    .academic-reading-header {
        align-items: stretch;
        flex-direction: column;
    }

    .academic-reading-controls {
        grid-template-columns: 1fr;
        min-width: 0;
    }

    .academic-reading-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .academic-passage-card {
        padding: 22px 20px;
    }

    .academic-reading-score {
        align-items: start;
        flex-direction: column;
    }
}