.forklift-learning-page {
    --forklift-orange: #ee7900;
    --forklift-orange-dark: #bd5600;
    --forklift-ink: #202020;
    --forklift-muted: #6a625a;
    --forklift-line: #ded7cf;
    --forklift-soft: #f7f3ee;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.forklift-learning-heading {
    max-width: 940px;
}

.forklift-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 24px;
}

.forklift-learning-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(320px, .8fr);
    gap: 24px;
    align-items: start;
}

.forklift-diagram-card,
.forklift-info-card {
    border: 1px solid var(--forklift-line);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 16px 40px rgba(20, 20, 20, .08);
}

.forklift-diagram-card {
    padding: 16px;
}

.forklift-stage {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 12px;
    background: linear-gradient(180deg, #ffffff 0%, #fbfbfb 100%);
}

.forklift-image-wrap {
    position: relative;
    width: 100%;
    max-width: 100%;
    transition: opacity .35s ease, visibility .35s ease;
}

.forklift-image-wrap img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 12px;
}

.forklift-image-assembled {
    position: relative;
    z-index: 1;
    opacity: 1;
    visibility: visible;
}

.forklift-image-exploded {
    position: absolute;
    inset: 0;
    z-index: 2;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.forklift-learning-page.is-exploded .forklift-image-assembled {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.forklift-learning-page.is-exploded .forklift-image-exploded {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.forklift-hotspot {
    position: absolute;
    z-index: 5;
    width: 24px;
    height: 24px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    transform: translate(-50%, -50%);
}

.forklift-hotspot-marker {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 16px;
    height: 16px;
    border: 3px solid #ffffff;
    border-radius: 999px;
    background: var(--forklift-orange);
    box-shadow: 0 0 0 4px rgba(238, 121, 0, .28), 0 6px 14px rgba(0,0,0,.22);
    transform: translate(-50%, -50%);
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}

.forklift-hotspot-label {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    padding: 8px 0;
    border-radius: 999px;
    background: rgba(32, 32, 32, .92);
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    transform: translateY(-50%);
    transition: opacity .18s ease, max-width .18s ease, padding .18s ease;
}

.forklift-hotspot[data-part="counterweight"] .forklift-hotspot-label,
.forklift-hotspot[data-part="rear-wheel"] .forklift-hotspot-label,
.forklift-hotspot[data-part="hood"] .forklift-hotspot-label {
    left: auto;
    right: calc(100% + 10px);
}

.forklift-hotspot:hover .forklift-hotspot-marker,
.forklift-hotspot:focus-visible .forklift-hotspot-marker,
.forklift-hotspot.is-active .forklift-hotspot-marker {
    transform: translate(-50%, -50%) scale(1.08);
    background: #cf6100;
    box-shadow: 0 0 0 6px rgba(238, 121, 0, .24), 0 8px 18px rgba(0,0,0,.28);
}

.forklift-hotspot:hover .forklift-hotspot-label,
.forklift-hotspot:focus-visible .forklift-hotspot-label,
.forklift-hotspot.is-active .forklift-hotspot-label,
.forklift-learning-page.show-labels .forklift-hotspot-label {
    opacity: 1;
    max-width: 220px;
    padding: 8px 12px;
}

.forklift-diagram-help,
.forklift-diagram-mobile-tip {
    margin: 12px 4px 0;
    color: var(--forklift-muted);
    font-size: 13px;
}

.forklift-diagram-mobile-tip {
    display: none;
}

.forklift-info-card {
    position: sticky;
    top: 100px;
    padding: 26px;
}

.forklift-info-card h2 {
    margin: 4px 0 10px;
    font-size: 28px;
}

.forklift-info-section {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--forklift-line);
}

.forklift-info-section h3 {
    margin: 0 0 8px;
    font-size: 17px;
}

.forklift-info-section ul {
    margin-bottom: 0;
    padding-left: 20px;
}

.forklift-topic-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.forklift-topic-tags span {
    padding: 7px 10px;
    border: 1px solid #f0c295;
    border-radius: 999px;
    background: #fff6ec;
    color: #8d4300;
    font-size: 12px;
    font-weight: 800;
}

.forklift-question-note {
    margin-top: 20px;
    padding: 16px;
    border-left: 4px solid var(--forklift-orange);
    border-radius: 8px;
    background: #fff7ed;
}

.forklift-question-note p {
    margin: 6px 0 0;
}

.forklift-parts-index {
    margin-top: 34px;
}

.forklift-part-buttons {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.forklift-part-button {
    min-height: 54px;
    padding: 11px 13px;
    border: 1px solid var(--forklift-line);
    border-radius: 9px;
    background: #fff;
    color: var(--forklift-ink);
    font: inherit;
    font-weight: 800;
    text-align: left;
    cursor: pointer;
    transition: border-color .15s ease, background .15s ease, transform .15s ease;
}

.forklift-part-button:hover,
.forklift-part-button:focus-visible,
.forklift-part-button.is-active {
    border-color: var(--forklift-orange);
    background: #fff5e9;
    transform: translateY(-1px);
    outline: none;
}

.forklift-legal-note {
    margin-top: 26px;
    padding: 15px 18px;
    border-radius: 8px;
    background: var(--forklift-soft);
    color: var(--forklift-muted);
    font-size: 13px;
}

@media (max-width: 1180px) {
    .forklift-learning-grid {
        grid-template-columns: 1fr;
    }

    .forklift-info-card {
        position: static;
    }
}

@media (max-width: 900px) {
    .forklift-part-buttons {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .forklift-toolbar .button {
        flex: 1 1 100%;
    }

    .forklift-diagram-card {
        padding: 10px;
    }

    .forklift-info-card {
        padding: 20px;
    }

    .forklift-info-card h2 {
        font-size: 24px;
    }

    .forklift-part-buttons {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .forklift-hotspot {
        width: 24px;
        height: 24px;
    }

    .forklift-hotspot-marker {
        width: 16px;
        height: 16px;
    }

    .forklift-hotspot-label {
        font-size: 12px;
    }

    .forklift-diagram-mobile-tip {
        display: block;
    }
}

@media (prefers-reduced-motion: reduce) {
    .forklift-image-wrap,
    .forklift-hotspot-marker,
    .forklift-hotspot-label,
    .forklift-part-button {
        transition: none;
    }
}

.forklift-zoom-button {
    margin-top: 16px;
}

.is-hidden {
    display: none !important;
}

.forklift-modal {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.forklift-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .55);
}

.forklift-modal-dialog {
    position: relative;
    z-index: 1;
    width: min(720px, 100%);
    max-height: 90vh;
    overflow: auto;
    padding: 24px;
    border-radius: 16px;
    background: #ffffff;
    box-shadow: 0 24px 60px rgba(0,0,0,.25);
}

.forklift-modal-dialog h3 {
    margin: 0 0 8px;
    font-size: 28px;
}

.forklift-modal-copy {
    margin: 0 0 16px;
    color: var(--forklift-muted);
}

.forklift-modal-dialog img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid var(--forklift-line);
}

.forklift-modal-close {
    position: absolute;
    top: 10px;
    right: 14px;
    border: 0;
    background: transparent;
    color: #444;
    font-size: 34px;
    line-height: 1;
    cursor: pointer;
}

@media (max-width: 700px) {
    .forklift-modal-dialog {
        padding: 18px;
    }

    .forklift-modal-dialog h3 {
        font-size: 22px;
        padding-right: 24px;
    }
}