.se-quiz {
    --se-quiz-accent: #5b4bd6;
    --se-quiz-accent-strong: #4634b8;
    --se-quiz-accent-soft: rgba(91, 75, 214, 0.1);
    --se-quiz-border: rgba(91, 75, 214, 0.18);
    --se-quiz-surface: rgba(255, 255, 255, 0.86);
    --se-quiz-surface-strong: #ffffff;
    --se-quiz-muted: #667085;
    --se-quiz-shadow: 0 18px 48px rgba(34, 27, 74, 0.1);
    --se-quiz-ui-font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --se-quiz-paper-font: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
    font-family: var(--se-quiz-ui-font);
    margin: 1.5rem 0 2.5rem;
}

[data-md-color-scheme="slate"] .se-quiz {
    --se-quiz-accent: #a899ff;
    --se-quiz-accent-strong: #c4b9ff;
    --se-quiz-accent-soft: rgba(168, 153, 255, 0.13);
    --se-quiz-border: rgba(185, 174, 255, 0.22);
    --se-quiz-surface: rgba(24, 27, 38, 0.82);
    --se-quiz-surface-strong: rgba(31, 35, 50, 0.96);
    --se-quiz-muted: #a8b3cf;
    --se-quiz-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

.se-quiz__header {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.2rem;
    align-items: end;
    margin-bottom: 1rem;
    padding: 1.15rem 1.2rem;
    border: 1px solid var(--se-quiz-border);
    border-radius: 8px;
    background:
        linear-gradient(135deg, var(--se-quiz-accent-soft), transparent 55%),
        var(--se-quiz-surface);
    box-shadow: var(--se-quiz-shadow);
}

.se-quiz__header h2 {
    margin: 0.15rem 0 0.25rem;
    color: var(--md-default-fg-color);
    font-size: 1.25rem;
    line-height: 1.35;
}

.se-quiz__header p {
    margin: 0;
    color: var(--se-quiz-muted);
    line-height: 1.6;
}

.se-quiz__eyebrow {
    color: var(--se-quiz-accent) !important;
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.se-quiz__meter {
    display: grid;
    min-width: 7rem;
    justify-items: end;
    gap: 0.1rem;
    color: var(--se-quiz-muted);
    font-size: 0.74rem;
    font-weight: 800;
}

.se-quiz__toolbar {
    display: grid;
    grid-template-columns: repeat(4, minmax(7rem, 1fr));
    gap: 0.75rem;
    align-items: end;
    padding: 0.95rem;
    border: 1px solid var(--se-quiz-border);
    border-radius: 8px;
    background: var(--se-quiz-surface);
    box-shadow: 0 10px 30px rgba(31, 41, 55, 0.06);
}

.se-quiz__field {
    display: grid;
    gap: 0.35rem;
}

.se-quiz__field label,
.se-quiz__check {
    color: var(--se-quiz-muted);
    font-size: 0.74rem;
    font-weight: 800;
}

.se-quiz__field select,
.se-quiz__field input {
    width: 100%;
    min-height: 2.4rem;
    border: 1px solid var(--se-quiz-border);
    border-radius: 6px;
    padding: 0.4rem 0.62rem;
    background: var(--se-quiz-surface-strong);
    color: var(--md-default-fg-color);
    font: inherit;
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.se-quiz__field select:focus,
.se-quiz__field input:focus {
    border-color: var(--se-quiz-accent);
    box-shadow: 0 0 0 3px var(--se-quiz-accent-soft);
}

.se-quiz__field.is-disabled {
    opacity: 0.46;
}

.se-quiz__check {
    display: inline-flex;
    min-height: 2.4rem;
    align-items: center;
    gap: 0.4rem;
    padding: 0 0.15rem;
}

.se-quiz__primary,
.se-quiz__secondary,
.se-quiz__option {
    min-height: 2.4rem;
    border-radius: 7px;
    border: 1px solid var(--se-quiz-border);
    padding: 0.45rem 0.75rem;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.se-quiz__primary {
    border-color: var(--se-quiz-accent);
    background: var(--se-quiz-accent);
    color: #fff;
    box-shadow: 0 8px 20px rgba(91, 75, 214, 0.22);
}

.se-quiz__primary:hover {
    background: var(--se-quiz-accent-strong);
    transform: translateY(-1px);
}

.se-quiz__secondary {
    background: var(--se-quiz-surface-strong);
    color: var(--se-quiz-accent);
}

.se-quiz__secondary:hover,
.se-quiz__option:hover {
    border-color: var(--se-quiz-accent);
    transform: translateY(-1px);
}

.se-quiz__error {
    margin-top: 0.9rem;
    padding: 0.7rem 0.8rem;
    border-left: 4px solid #dc2626;
    border-radius: 6px;
    background: rgba(220, 38, 38, 0.08);
    color: #dc2626;
    font-weight: 700;
}

.se-quiz__status {
    display: grid;
    gap: 0.45rem;
    margin: 1rem 0;
    padding: 0 0.15rem;
}

.se-quiz__progress-text {
    margin-bottom: 0.35rem;
    color: var(--se-quiz-muted);
    font-size: 0.82rem;
    font-weight: 700;
}

.se-quiz__bar {
    height: 0.55rem;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(100, 116, 139, 0.18);
}

.se-quiz__bar-fill {
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--se-quiz-accent), #f59e0b);
    transition: width 0.22s ease;
}

.se-quiz__score {
    color: var(--se-quiz-accent);
    font-size: 1.45rem;
    font-weight: 800;
    line-height: 1;
}

.se-quiz__card {
    padding: 1.25rem;
    border: 1px solid var(--se-quiz-border);
    border-radius: 8px;
    background: var(--se-quiz-surface-strong);
    box-shadow: var(--se-quiz-shadow);
}

.se-quiz__chapter {
    color: var(--se-quiz-muted);
    font-size: 0.78rem;
    font-weight: 800;
}

.se-quiz__topic {
    margin: 0.45rem 0 1.05rem;
    color: var(--md-default-fg-color);
    font-family: var(--se-quiz-paper-font);
    font-size: 1.16rem;
    font-weight: 650;
    line-height: 1.78;
    overflow-wrap: anywhere;
}

.se-quiz__options {
    display: grid;
    gap: 0.6rem;
}

.se-quiz__option {
    display: grid;
    grid-template-columns: 1.8rem 1fr;
    gap: 0.6rem;
    width: 100%;
    background: var(--se-quiz-surface);
    color: var(--md-default-fg-color);
    font-family: var(--se-quiz-paper-font);
    font-size: 1rem;
    font-weight: 520;
    text-align: left;
    line-height: 1.7;
    overflow-wrap: anywhere;
}

.se-quiz__option-label {
    color: var(--se-quiz-accent);
    font-family: var(--se-quiz-ui-font);
    font-weight: 900;
}

.se-quiz__option.is-selected {
    border-color: var(--se-quiz-accent);
    background: var(--se-quiz-accent-soft);
}

.se-quiz__option.is-correct {
    border-color: #16a34a;
    background: rgba(22, 163, 74, 0.14);
}

.se-quiz__option.is-wrong {
    border-color: #dc2626;
    background: rgba(220, 38, 38, 0.12);
}

.se-quiz__feedback {
    margin-top: 0.9rem;
    padding: 0.75rem 0.85rem;
    border-radius: 7px;
    background: rgba(100, 116, 139, 0.12);
    font-weight: 800;
}

.se-quiz__feedback.is-correct {
    color: #16a34a;
}

.se-quiz__feedback.is-wrong {
    color: #dc2626;
}

.se-quiz__actions {
    display: flex;
    gap: 0.65rem;
    margin-top: 1rem;
}

@media (max-width: 760px) {
    .se-quiz__header,
    .se-quiz__toolbar,
    .se-quiz__status {
        grid-template-columns: 1fr;
    }

    .se-quiz__meter {
        justify-items: start;
    }

    .se-quiz__actions {
        display: grid;
    }
}

@media (max-width: 480px) {
    .se-quiz__header,
    .se-quiz__toolbar,
    .se-quiz__card {
        padding: 0.9rem;
    }

    .se-quiz__header h2 {
        font-size: 1.08rem;
    }

    .se-quiz__topic {
        font-size: 1.04rem;
        line-height: 1.7;
    }

    .se-quiz__option {
        grid-template-columns: 1.45rem 1fr;
        gap: 0.45rem;
        font-size: 0.94rem;
    }
}