.kit-detail-page {
    background: var(--bg-page);
    min-height: 60vh;
}

.kit-detail-shell {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px 64px;
}

.kit-detail-heading {
    margin-bottom: 28px;
}

.kit-detail-heading .ch-caption {
    color: var(--clevr-blue-600);
}

.kit-detail-heading .ch-h1 {
    margin: 8px 0 0;
}

.kit-detail-layout {
    display: grid;
    grid-template-columns: minmax(300px, 390px) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}

.kit-detail-buybox {
    min-width: 0;
    position: sticky;
    top: 88px;
    display: grid;
    gap: 18px;
}

.kit-gallery,
.kit-purchase-panel,
.kit-detail-card {
    background: #fff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.kit-gallery {
    padding: 14px;
    min-width: 0;
    overflow: hidden;
}

.kit-main-image-wrap {
    aspect-ratio: 4 / 3;
    background: #fff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.kit-main-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.kit-thumb-carousel {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) 36px;
    gap: 8px;
    align-items: center;
    margin-top: 12px;
    min-width: 0;
}

.kit-thumb-row {
    display: flex;
    gap: 8px;
    max-width: 100%;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    padding: 2px;
    scroll-behavior: smooth;
    scrollbar-width: none;
}

.kit-thumb-row::-webkit-scrollbar {
    display: none;
}

.kit-thumb-nav {
    width: 36px;
    height: 64px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: #fff;
    color: var(--fg-2);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition:
        background var(--motion-fast) var(--ease-standard),
        border-color var(--motion-fast) var(--ease-standard),
        color var(--motion-fast) var(--ease-standard),
        opacity var(--motion-fast) var(--ease-standard);
}

.kit-thumb-nav:hover:not(:disabled) {
    border-color: var(--clevr-blue-500);
    background: var(--bg-brand-soft);
    color: var(--fg-brand);
}

.kit-thumb-nav:disabled {
    cursor: default;
    opacity: 0.35;
}

.kit-thumb-nav span {
    display: block;
    font: 700 30px/1 var(--font-body);
    transform: translateY(-1px);
}

.kit-thumb {
    flex: 0 0 64px;
    width: 64px;
    height: 64px;
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: #fff;
    cursor: pointer;
    overflow: hidden;
    padding: 4px;
    transition: border-color var(--motion-fast) var(--ease-standard), box-shadow var(--motion-fast) var(--ease-standard);
}

.kit-thumb:hover,
.kit-thumb.is-active {
    border-color: var(--clevr-blue-500);
    box-shadow: 0 0 0 2px var(--clevr-blue-100);
}

.kit-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.kit-purchase-panel {
    padding: 18px;
}

.kit-tier-list {
    border: 0;
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
}

.kit-tier-list legend {
    color: var(--fg-1);
    font: 700 14px var(--font-body);
    margin-bottom: 10px;
    padding: 0;
}

.kit-tier-option,
.kit-addon-option {
    border: 1.5px solid var(--border-base);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 12px;
    padding: 13px;
    transition: border-color var(--motion-fast) var(--ease-standard), background var(--motion-fast) var(--ease-standard);
}

.kit-tier-option:hover,
.kit-addon-option:hover {
    border-color: var(--clevr-blue-500);
    background: var(--bg-brand-soft);
}

.kit-tier-option.is-unavailable {
    background:
        repeating-linear-gradient(
            135deg,
            var(--neutral-100) 0,
            var(--neutral-100) 8px,
            var(--neutral-200) 8px,
            var(--neutral-200) 16px
        );
    border-color: var(--neutral-300);
    color: var(--fg-4);
    cursor: not-allowed;
    opacity: 0.86;
}

.kit-tier-option.is-unavailable:hover {
    border-color: var(--neutral-300);
    background:
        repeating-linear-gradient(
            135deg,
            var(--neutral-100) 0,
            var(--neutral-100) 8px,
            var(--neutral-200) 8px,
            var(--neutral-200) 16px
        );
}

.kit-tier-option input,
.kit-addon-option input {
    margin-top: 3px;
}

.kit-tier-copy {
    display: grid;
    gap: 5px;
    min-width: 0;
}

.kit-tier-top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    color: var(--fg-1);
    font: 700 14px var(--font-body);
}

.kit-tier-top span:last-child {
    color: var(--fg-brand);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.kit-tier-option:has(input:checked) {
    box-shadow: 0 0 0 3px rgba(47, 128, 237, 0.12);
}

.kit-tier-basic:has(input:checked) {
    background: var(--clevr-blue-50);
    border-color: var(--clevr-blue-500);
}

.kit-tier-full:has(input:checked) {
    background: rgba(47, 174, 101, 0.12);
    border-color: var(--pcb-green);
    box-shadow: 0 0 0 3px rgba(47, 174, 101, 0.12);
}

.kit-tier-option:has(input:checked) .kit-tier-top,
.kit-tier-option:has(input:checked) .kit-tier-top span:last-child,
.kit-tier-option:has(input:checked) .kit-tier-desc {
    color: var(--fg-1);
}

.kit-tier-basic:has(input:checked) .kit-tier-top span:last-child {
    color: var(--clevr-blue-700);
}

.kit-tier-full:has(input:checked) .kit-tier-top span:last-child {
    color: #15803d;
}

.kit-tier-option.is-unavailable .kit-tier-top,
.kit-tier-option.is-unavailable .kit-tier-top span:last-child,
.kit-tier-option.is-unavailable .kit-tier-desc {
    color: var(--fg-4);
}

.kit-tier-desc {
    color: var(--fg-2);
    font: 400 13px/1.45 var(--font-body);
}

.kit-addon-option {
    margin-top: 12px;
}

.kit-addon-option .kit-tier-top span:last-child {
    color: #92400e;
}

.kit-total-row {
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-top: 16px;
    padding-top: 16px;
}

.kit-total-row span:first-child {
    color: var(--fg-2);
    font: 600 14px var(--font-body);
}

.kit-total-row span:last-child {
    color: var(--fg-brand);
    font: 800 30px var(--font-mono);
}

.kit-add-btn,
.kit-out-of-stock button {
    width: 100%;
    border: 0;
    border-radius: var(--radius-md);
    color: #fff;
    cursor: pointer;
    font: 700 15px var(--font-body);
    margin-top: 16px;
    min-height: 46px;
    padding: 12px 18px;
}

.kit-add-btn {
    background: var(--clevr-blue-500);
    transition: background var(--motion-fast) var(--ease-standard);
}

.kit-add-btn:hover {
    background: var(--clevr-blue-600);
}

.kit-add-btn:disabled {
    opacity: 0.65;
    cursor: wait;
}

.kit-feedback {
    color: var(--fg-2);
    font: 600 13px var(--font-body);
    min-height: 20px;
    margin-top: 10px;
    text-align: center;
}

.kit-feedback.text-green-500 {
    color: #15803d;
}

.kit-feedback.text-red-500 {
    color: var(--danger);
}

.kit-out-of-stock button {
    background: var(--neutral-400);
    cursor: not-allowed;
}

.kit-out-of-stock p {
    color: var(--danger);
    font: 600 13px var(--font-body);
    margin: 10px 0 0;
    text-align: center;
}

.kit-detail-content {
    display: grid;
    gap: 22px;
    min-width: 0;
}

.kit-detail-card {
    padding: 24px;
}

.kit-detail-card h2 {
    color: var(--fg-1);
    font: 700 24px/1.25 var(--font-body);
    margin: 0 0 16px;
}

.kit-description {
    color: var(--fg-2);
    font: 400 16px/1.65 var(--font-body);
}

.kit-description > *:first-child {
    margin-top: 0;
}

.kit-description > *:last-child {
    margin-bottom: 0;
}

.kit-description p {
    margin: 0 0 14px;
}

.kit-description ul,
.kit-description ol {
    color: var(--fg-2);
    margin: 0 0 16px;
    padding-left: 24px;
}

.kit-description ul {
    list-style: disc;
}

.kit-description ol {
    list-style: decimal;
}

.kit-description li {
    margin: 6px 0;
    padding-left: 2px;
}

.kit-description h1,
.kit-description h2,
.kit-description h3 {
    color: var(--fg-1);
    line-height: 1.25;
}

.kit-included-list,
.kit-passive-list {
    display: grid;
    gap: 12px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.kit-included-item {
    display: grid;
    grid-template-columns: 66px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    background: var(--neutral-50);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px;
}

.kit-included-item img,
.kit-passive-item img {
    width: 66px;
    height: 66px;
    object-fit: contain;
    background: #fff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 4px;
}

.kit-included-item p,
.kit-passive-item p {
    color: var(--fg-1);
    font: 700 14px/1.35 var(--font-body);
    margin: 0;
}

.kit-included-item span,
.kit-passive-item span {
    color: var(--fg-3);
    font: 500 13px var(--font-body);
}

.kit-included-item a,
.kit-passive-item a {
    color: var(--fg-link);
    font: 700 13px var(--font-body);
    text-decoration: none;
    white-space: nowrap;
}

.kit-included-item a:hover,
.kit-passive-item a:hover {
    color: var(--fg-link-hover);
}

.kit-card-note {
    color: var(--fg-2);
    font: 400 14px/1.55 var(--font-body);
    margin: -6px 0 16px;
}

.kit-passive-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px;
}

.kit-passive-item > div {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.kit-passive-item img {
    width: 52px;
    height: 52px;
    flex: 0 0 52px;
}

.kit-passive-item p {
    min-width: 0;
}

@media (max-width: 980px) {
    .kit-detail-layout {
        grid-template-columns: 1fr;
    }

    .kit-detail-buybox {
        position: static;
    }
}

@media (max-width: 640px) {
    .kit-detail-shell {
        padding: 36px 16px 48px;
    }

    .kit-detail-heading .ch-h1 {
        font-size: 36px;
    }

    .kit-included-item {
        grid-template-columns: 56px minmax(0, 1fr);
    }

    .kit-included-item a {
        grid-column: 2;
        justify-self: start;
    }

    .kit-passive-item {
        align-items: flex-start;
        flex-direction: column;
    }
}