.kw-quiz {
    max-width: 780px;
    margin: 0 auto;
}

.kw-quiz__modes {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.kw-quiz__mode-btn {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    background: #f9fafb;
    color: #374151;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.kw-quiz__mode-btn:hover {
    border-color: var(--primary-color);
    background: #fff;
}

.kw-quiz__mode-btn.is-active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary-color);
}

.kw-quiz__mode-btn small {
    display: block;
    margin-top: 4px;
    font-weight: 400;
    color: #6b7280;
}

.kw-quiz__progress {
    margin-bottom: var(--spacing-lg);
}

.kw-quiz__progress-text {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: #6b7280;
    font-weight: 600;
}

.kw-quiz__progress-bar {
    height: 8px;
    background: #e5e7eb;
    border-radius: 999px;
    overflow: hidden;
}

.kw-quiz__progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #3b82f6);
    border-radius: 999px;
    transition: width 0.3s ease;
    width: 0;
}

.kw-quiz__card {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.kw-quiz__category {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--spacing-md);
}

.kw-quiz__question {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #111827;
    line-height: 1.5;
    margin: 0 0 var(--spacing-lg);
}

.kw-quiz__options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.kw-quiz__option {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    background: #fff;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: left;
    width: 100%;
    font-size: var(--font-size-base);
    color: #374151;
    line-height: 1.5;
}

.kw-quiz__option:hover:not(:disabled) {
    border-color: #93c5fd;
    background: #eff6ff;
}

.kw-quiz__option.is-selected {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.06);
}

.kw-quiz__option.is-correct {
    border-color: #16a34a;
    background: #f0fdf4;
    color: #166534;
}

.kw-quiz__option.is-wrong {
    border-color: #dc2626;
    background: #fef2f2;
    color: #991b1b;
}

.kw-quiz__option:disabled {
    cursor: default;
}

.kw-quiz__option-key {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #e5e7eb;
    color: #374151;
    font-weight: 700;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.kw-quiz__option.is-selected .kw-quiz__option-key {
    background: var(--primary-color);
    color: #fff;
}

.kw-quiz__option.is-correct .kw-quiz__option-key {
    background: #16a34a;
    color: #fff;
}

.kw-quiz__option.is-wrong .kw-quiz__option-key {
    background: #dc2626;
    color: #fff;
}

.kw-quiz__explanation {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    background: #eff6ff;
    border-left: 4px solid var(--primary-color);
    font-size: var(--font-size-sm);
    color: #1e40af;
    line-height: 1.6;
}

.kw-quiz__explanation strong {
    display: block;
    margin-bottom: 4px;
}

.kw-quiz__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

.kw-quiz__result {
    text-align: center;
    padding: var(--spacing-2xl);
}

.kw-quiz__result-score {
    font-size: 3rem;
    font-weight: 800;
    color: #111827;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.kw-quiz__result-score span {
    font-size: 1.5rem;
    color: #6b7280;
    font-weight: 600;
}

.kw-quiz__result-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: 999px;
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
}

.kw-quiz__result-badge--pass {
    background: #dcfce7;
    color: #166534;
}

.kw-quiz__result-badge--fail {
    background: #fee2e2;
    color: #991b1b;
}

.kw-quiz__result-summary {
    color: #4b5563;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.kw-quiz__mistakes {
    text-align: left;
    margin-top: var(--spacing-xl);
}

.kw-quiz__mistakes h3 {
    font-size: var(--font-size-lg);
    color: #111827;
    margin-bottom: var(--spacing-md);
}

.kw-quiz__mistake-item {
    padding: var(--spacing-md);
    border: 1px solid #fecaca;
    border-radius: 12px;
    background: #fff;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.kw-quiz__mistake-item p {
    margin: 0 0 4px;
    color: #374151;
}

.kw-quiz__mistake-item .kw-quiz__explanation {
    margin-top: var(--spacing-sm);
    font-size: 0.8125rem;
}

.kw-quiz__start-screen {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.kw-quiz__start-screen p {
    color: #4b5563;
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.kw-quiz__disclaimer {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: 8px;
    background: #fffbeb;
    border: 1px solid #fde68a;
    font-size: var(--font-size-sm);
    color: #92400e;
    line-height: 1.5;
}

.kw-oral-list {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: oral-counter;
}

.kw-oral-list li {
    counter-increment: oral-counter;
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-xl);
    position: relative;
    border-bottom: 1px solid #f3f4f6;
    color: #374151;
    line-height: 1.5;
    font-size: var(--font-size-sm);
}

.kw-oral-list li::before {
    content: counter(oral-counter) ".";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: var(--primary-color);
}

.kw-oral-toggle {
    width: 100%;
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    font-weight: 700;
    color: #111827;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    transition: background var(--transition-base);
}

.kw-oral-toggle:hover {
    background: #f3f4f6;
}

.kw-oral-toggle[aria-expanded="true"] .kw-oral-toggle__arrow {
    transform: rotate(180deg);
}

.kw-oral-toggle__arrow {
    transition: transform 0.2s ease;
}

.kw-oral-panel {
    display: none;
    padding: var(--spacing-md) 0;
}

.kw-oral-panel.is-open {
    display: block;
}

@media (max-width: 640px) {
    .kw-quiz__mode-btn {
        min-width: 100%;
    }

    .kw-quiz__card {
        padding: var(--spacing-lg);
    }

    .kw-quiz__result-score {
        font-size: 2.25rem;
    }
}

.adsense-inarticle {
    max-width: 780px;
    margin: var(--spacing-xl) auto;
    min-height: 90px;
    overflow: hidden;
}

.adsense-inarticle ins.adsbygoogle {
    display: block;
}