.exam-bar {
    position: sticky;
    top: 0;
    z-index: 5;
    margin: 0 calc(var(--space-6) * -1) var(--space-6);
    padding: var(--space-4) var(--space-6) 0;
    background: color-mix(in srgb, var(--paper) 92%, transparent);
    backdrop-filter: blur(10px);
}

.exam-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-5);
    padding-bottom: var(--space-4);
}

.exam-heading {
    min-width: 0;
}

.exam-meta {
    color: var(--ink-faint);
    font-size: .85rem;
}

.exam-heading h1 {
    margin-top: 2px;
    overflow: hidden;
    font-size: clamp(1.3rem, 2.4vw, 1.7rem);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.exam-tools {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

.hint-meter {
    display: flex;
    align-items: center;
    gap: 2px;
    height: 40px;
    padding: 0 var(--space-3);
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: .85rem;
    font-weight: 600;
}

.hint-meter > span:first-child {
    margin-right: 6px;
}

.hint-meter i {
    font-size: 1.1rem;
    color: var(--warn);
}

.hint-meter i.spent {
    color: var(--line-strong);
}

.exam-progress {
    height: 3px;
    border-radius: 2px;
    background: var(--line);
}

.exam-progress-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--ink);
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 400ms var(--ease-out);
}

.exam-body {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
}

.navigator-panel {
    position: sticky;
    top: 112px;
    display: grid;
    gap: var(--space-3);
}

.navigator-head {
    display: flex;
    justify-content: space-between;
    color: var(--ink-soft);
    font-size: .85rem;
    font-weight: 600;
}

.navigator-head span:last-child {
    color: var(--ink-faint);
    font-variant-numeric: tabular-nums;
}

.navigator {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
}

.nav-item {
    position: relative;
    aspect-ratio: 1;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-s);
    background: var(--surface);
    color: var(--ink-soft);
    font-size: .85rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    transition: background var(--duration-fast) ease, border-color var(--duration-fast) ease, color var(--duration-fast) ease;
}

.nav-item:hover {
    border-color: var(--ink-faint);
    color: var(--ink);
}

.nav-item.answered {
    border-color: transparent;
    background: var(--marker);
    color: var(--ink);
}

.nav-item.current {
    border-color: var(--ink);
    box-shadow: inset 0 0 0 1px var(--ink);
    color: var(--ink);
}

.nav-item.hinted::after {
    content: "";
    position: absolute;
    top: -3px;
    right: -3px;
    width: 9px;
    height: 9px;
    border: 2px solid var(--paper);
    border-radius: 50%;
    background: var(--warn);
}

.question {
    display: grid;
    gap: var(--space-5);
    padding: 36px 40px var(--space-5);
    scroll-margin-top: 120px;
}

.question-head {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.question-number {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -.02em;
}

.question-type {
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--paper-deep);
    color: var(--ink-soft);
    font-size: .8rem;
    font-weight: 600;
}

.statement {
    font-size: 1.07rem;
}

.options {
    display: grid;
    gap: 10px;
    list-style: none;
}

.option {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-m);
    background: var(--surface);
    text-align: left;
    transition: border-color var(--duration-fast) ease, background var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}

.option:hover {
    border-color: var(--ink-faint);
    background: var(--surface-sunk);
}

.option-letter {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border: 1.5px solid var(--line-strong);
    border-radius: var(--radius-s);
    background: var(--surface);
    color: var(--ink-soft);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: .92rem;
    transition: background var(--duration-fast) ease, border-color var(--duration-fast) ease, color var(--duration-fast) ease;
}

.option .markdown {
    padding-top: 4px;
}

.option[aria-checked="true"] {
    border-color: var(--ink);
    background: var(--marker-soft);
    box-shadow: inset 0 0 0 1px var(--ink);
}

.option[aria-checked="true"] .option-letter {
    border-color: var(--ink);
    background: var(--ink);
    color: var(--marker);
}

.essay {
    position: relative;
}

.essay textarea {
    min-height: 220px;
    padding-bottom: 36px;
    font-size: 1rem;
}

.essay-count {
    position: absolute;
    right: 14px;
    bottom: 12px;
    color: var(--ink-faint);
    font-size: .8rem;
    font-variant-numeric: tabular-nums;
    pointer-events: none;
}

.hint {
    display: grid;
    justify-items: start;
    gap: var(--space-3);
}

.hint-button {
    border-style: dashed;
    color: var(--ink-soft);
}

.hint-button small {
    color: var(--ink-faint);
    font-weight: 500;
}

.hint-button i {
    color: var(--warn);
}

.hint-box {
    width: 100%;
    padding: var(--space-4) 18px;
    border: 1px solid #f1d9b8;
    border-radius: var(--radius-m);
    background: var(--warn-soft);
    animation: hint-in var(--duration-base) var(--ease-out);
}

@keyframes hint-in {
    from {
        transform: translateY(-4px);
    }
}

.hint-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 2px;
    color: var(--warn);
    font-size: .85rem;
    font-weight: 700;
}

.question-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding-top: var(--space-5);
    border-top: 1px solid var(--line);
}

.keyboard-help {
    color: var(--ink-faint);
    font-size: .8rem;
}

kbd {
    display: inline-block;
    min-width: 22px;
    padding: 1px 6px;
    border: 1px solid var(--line-strong);
    border-bottom-width: 2px;
    border-radius: 5px;
    background: var(--surface);
    color: var(--ink-soft);
    font-family: var(--font-text);
    font-size: .75rem;
    text-align: center;
}

@media (max-width: 900px) {
    .exam-body {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .navigator-panel {
        position: static;
    }

    .navigator {
        grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    }

    .keyboard-help {
        display: none;
    }
}

@media (max-width: 640px) {
    .exam-bar {
        margin: 0 calc(var(--space-4) * -1) var(--space-4);
        padding: var(--space-3) var(--space-4) 0;
    }

    .exam-bar-inner {
        flex-wrap: wrap;
        gap: var(--space-2) var(--space-3);
    }

    .exam-heading {
        flex-basis: 100%;
    }

    .exam-heading h1 {
        display: -webkit-box;
        font-size: 1.15rem;
        white-space: normal;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .exam-tools {
        width: 100%;
        justify-content: space-between;
    }

    .question {
        scroll-margin-top: 150px;
    }

    .exam-meta {
        display: none;
    }

    .hint-meter > span:first-child {
        display: none;
    }

    .exam-tools {
        gap: var(--space-2);
    }

    .question {
        padding: var(--space-5) 18px 18px;
    }

    .option {
        grid-template-columns: 30px minmax(0, 1fr);
        gap: 10px;
        padding: 12px;
    }

    .option-letter {
        width: 30px;
        height: 30px;
    }
}