.button-product {
    width: fit-content;
    padding: 12px 62px;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.2;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.button-product:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

/* ================================
   TK — Product Page
   ================================ */

.tk-product-page {
    padding-bottom: 80px;
    font-family: 'Inter', sans-serif;
    color: #111;
}

.tk-product-page .title__main {
    margin-bottom: 70px;
    text-transform: uppercase;
}

.tk-product-hero {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 32px;
    margin-bottom: 64px;
}

.tk-product-hero>* {
    flex: 1;
}

.tk-product-gallery {
    display: flex;
    gap: 16px;
    align-items: start;
}

.tk-product-gallery__thumbs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tk-product-gallery__stage {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 494px;
    aspect-ratio: 1 / 1;
    height: auto;
    min-width: 0;
}

.tk-product-gallery__thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.tk-product-gallery__thumb:hover,
.tk-product-gallery__thumb.is-active {
    border: 1px solid var(--color-main);
}

.tk-product-gallery__thumb img {
    width: 100%;
    max-width: 109px;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: contain;
}

.tk-product-gallery__stage {
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #F7F7F7;
    border-radius: 12px;
}

.tk-product-gallery__stage img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.tk-product-gallery__lightbox {
    display: none;
}

.tk-product-summary {
    display: flex;
    max-width: 622px;
    flex-direction: column;
}

.tk-product-summary__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    margin-bottom: 10px;
}

.tk-product-summary__eyebrow {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.2;
}

.tk-product-summary__jump {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    font-size: 16px;
    font-weight: 400;
    text-decoration: none;
    background-color: #F1F1F1;
    padding: 6px 10px;
    border-radius: 6px;
    white-space: nowrap;
    transition: background 0.2s ease;
}

.tk-product-summary__jump:hover {
    background-color: #e8e8e8;
}

.tk-product-summary__meta {
    width: 100%;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
}

.tk-product-summary__meta-row {
    display: flex;
    justify-content: flex-start;
    border-bottom: 1px solid #E3E3E3;
    padding: 14px 0;
}

.tk-product-summary__meta-row:last-child {
    border-bottom: none;
}

.tk-product-summary__meta-label,
.tk-product-summary__meta-value {
    font-size: 15px;
    line-height: 1.4;
}

.tk-product-summary__meta-label {
    color: #8c8c8c;
    font-weight: 400;
    flex: 0 0 60%;
}

.tk-product-summary__meta-value {
    color: #111;
    font-weight: 400;
    flex: 1;
    text-align: left;
}

.tk-product-summary__actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tk-product-summary__button--ghost {
    background-color: #f2f2f2;
    color: #111;
}

.tk-product-summary__button--ghost:hover {
    background-color: #e8e8e8;
}

.tk-tabs {
    margin-bottom: 0;
}

.tk-tabs__radio {
    display: none;
}

.tk-tabs__controls {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.tk-tabs__control {
    padding: 8px 10px;
    border-radius: 6px;
    background-color: #F1F1F1;
    transition: background 0.2s ease, color 0.2s ease;
    cursor: pointer;
    user-select: none;
}

.tk-tabs__control:hover {
    background-color: #e8e8e8;
}

.tk-tabs__panel {
    display: none;
}

.tk-tabs__panel h3 {
    padding-left: 0px
}

.tk-tabs__panel p {
    padding-left: 30px;
    padding-bottom: 10px;
}

.tk-tabs__panel h4 {
    padding-left: 30px;
    padding-bottom: 10px;
    text-transform: uppercase;
}

.tk-tabs__panel ul {
    padding-left: 50px;
    padding-bottom: 20px;
}

@media (min-width: 769px) {
    .tk-tabs__panel--1 ul:has(li:nth-child(7)) {
        display: inline-grid;
        grid-template-columns: repeat(2, minmax(260px, auto));
        column-gap: 48px;
        width: fit-content;
        max-width: 100%;
    }

    .tk-tabs__panel--1 ul:has(li:nth-child(7)) li {
        break-inside: auto;
    }
}


#tk-tab-1:checked~.tk-tabs__panel--1,
#tk-tab-2:checked~.tk-tabs__panel--2 {
    display: block;
}

#tk-tab-3:checked~.tk-tabs__panel--3 {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.tk-tabs__panel--3 .tk-docs__item {
    display: flex;
    align-items: center;
}

#tk-tab-1:checked~.tk-tabs__controls label[for="tk-tab-1"],
#tk-tab-2:checked~.tk-tabs__controls label[for="tk-tab-2"],
#tk-tab-3:checked~.tk-tabs__controls label[for="tk-tab-3"] {
    background-color: var(--color-main);
    color: #fff;
}

.tk-tabs__lead {
    font-size: 16px;
    line-height: 1.7;
    color: #4e4e4e;
    margin-bottom: 40px;
    max-width: 80ch;
}

.tk-description {
    color: #111;
    font-size: 16px;
    line-height: 1.6;
}

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

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

.tk-description p,
.tk-description ul,
.tk-description ol,
.tk-description h2,
.tk-description h3,
.tk-description h4,
.tk-description blockquote {
    margin: 0 0 24px;
}

.tk-description h2,
.tk-description h3,
.tk-description h4 {
    color: #111;
    font-weight: 700;
    line-height: 1.2;
}

.tk-description h2 {
    font-size: 28px;
}

.tk-description h3 {
    font-size: 22px;
}

.tk-description h4 {
    font-size: 18px;
}

.tk-description strong,
.tk-description b {
    font-weight: 700;
}

.tk-description ul,
.tk-description ol {
    padding-left: 26px;
}

.tk-description li+li {
    margin-top: 10px;
}

.tk-description a {
    color: #111;
    text-decoration: underline;
}

.tk-description a:hover {
    color: var(--color-main);
}

.tk-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 48px;
}

.tk-feature-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #111;
}

.tk-feature-card p {
    font-size: 14px;
    color: #6f6f6f;
    line-height: 1.6;
}

.tk-specs h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
    color: #111;
}

.tk-specs__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 98px;
    width: 100%;
}

.tk-specs__row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding: 14px 0;
    border-bottom: 1px solid #E3E3E3;
    font-size: 14px;
    line-height: 1.4;
}

.tk-specs__label {
    color: #7B7B7B;
    font-weight: 400;
    min-width: 0;
}

.tk-specs__value {
    color: #111;
    font-weight: 400;
    min-width: 0;
}

.tk-docs__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 32px;
}

.tk-docs__item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    min-width: 0;
    color: #111;
    text-decoration: none;
    transition: color 0.2s ease;
}

.tk-docs__item:hover {
    color: var(--color-main);
}

.tk-docs__icon {
    flex: 0 0 36px;
    width: 36px;
    height: 36px;
    color: #F5F5F5;
}

.tk-docs__item:hover .tk-docs__icon {
    color: #FCEAEA;
}

.tk-docs__icon svg {
    display: block;
    width: 100%;
    height: 100%;
}

.tk-docs__title {
    display: block;
    padding-top: 2px;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.3;
}

@media (max-width: 1100px) {
    .tk-product-hero {
        flex-direction: column;
        gap: 32px;
        margin-bottom: 48px;
    }

    .tk-product-hero>* {
        width: 100%;
    }

    .tk-product-gallery {
        gap: 12px;
    }

    .tk-product-gallery__thumbs {
        flex-basis: 72px;
    }

    .tk-product-gallery__stage {
        max-width: 100%;
    }

    .tk-specs__grid {
        gap: 0 40px;
    }

    .tk-docs__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 20px 24px;
    }

    .tk-description {
        font-size: 15px;
    }

    .tk-description p,
    .tk-description ul,
    .tk-description ol,
    .tk-description h2,
    .tk-description h3,
    .tk-description h4,
    .tk-description blockquote {
        margin-bottom: 20px;
    }

    .tk-description h2 {
        font-size: 24px;
    }

    .tk-description h3 {
        font-size: 20px;
    }
}

@media (min-width: 1101px) and (max-width: 1366px) {
    .tk-product-hero {
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .button-product {
        width: 100%;
        padding-left: 24px;
        padding-right: 24px;
    }

    .tk-product-page {
        padding-bottom: 56px;
    }

    .tk-product-page .title__main {
        margin-bottom: 20px;
    }

    .tk-product-gallery {
        flex-direction: column;
        gap: 12px;
    }

    .tk-product-gallery__thumbs {
        order: 2;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
    }

    .tk-product-gallery__thumb {
        flex: 1 1 calc(25% - 8px);
    }

    .tk-product-gallery__stage {
        order: 1;
        padding: 16px;
        border-radius: 12px;
    }

    .tk-product-gallery__thumb img {
        max-width: 100%;
    }

    .tk-product-summary__top {
        flex-wrap: wrap;
        gap: 10px;
    }

    .tk-features {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .tk-specs__grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .tk-specs__row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 16px 0;
    }

    .tk-tabs__controls {
        gap: 8px;
        margin-bottom: 28px;
    }

    .tk-tabs__control {
        font-size: 14px;
        padding: 9px 18px;
    }

    .tk-description {
        font-size: 14px;
        line-height: 1.55;
    }

    .tk-description h2 {
        font-size: 22px;
    }

    .tk-description h3 {
        font-size: 18px;
    }

    .tk-description h4 {
        font-size: 16px;
    }

    .tk-description ul,
    .tk-description ol {
        padding-left: 22px;
    }

    .tk-docs__grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .tk-docs__item {
        gap: 12px;
    }

    .tk-docs__title {
        font-size: 15px;
        line-height: 1.35;
    }
    
    .tk-tabs__panel h3 {
        padding-left: 0px
    }
    
    .tk-tabs__panel p {
        padding-left: 20px;
        padding-bottom: 5px;
    }
    
    .tk-tabs__panel h4 {
        padding-left: 20px;
        padding-bottom: 5px;
        text-transform: uppercase;
    }
    
    .tk-tabs__panel ul {
        padding-left: 40px;
        padding-bottom: 10px;
    }
}


/* Product characteristics image fallback */
.tk-specs__image-scroll {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

.tk-specs__image {
    display: block;
    width: auto;
    min-width: 100%;
    max-width: none;
    height: auto;
}

.tk-specs__empty {
    margin: 0;
    color: #7B7B7B;
    font-size: 16px;
    line-height: 1.5;
}
 
/* Technical specification tables */
.tk-specs-table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-family: Arial, Helvetica, sans-serif;
}

.tk-specs-table {
    width: 100%;
    min-width: 1000px;
    border-collapse: collapse;
    font-size: 13px;
    line-height: 1.25;
    color: #20252b;
}

.tk-specs-table th,
.tk-specs-table td {
    border: 1px solid #ffffff;
    vertical-align: middle;
}

.tk-specs-table thead th {
    padding: 9px 7px;
    background: #cc3333;
    color: #ffffff;
    font-weight: 700;
    text-align: center;
}

.tk-specs-table thead .tk-specs-table__unit-row th {
    padding: 7px;
    background: #6f6f6f;
}

.tk-specs-table__series-row th {
    padding: 9px 10px;
    background: #e9eef2;
    color: #20252b;
    font-size: 15px;
    font-weight: 700;
    text-align: left;
}

.tk-specs-table__data-row {
    background: #ffffff;
    text-align: center;
}

.tk-specs-table__data-row--alt {
    background: #f5f7f9;
}

.tk-specs-table__data-row td {
    padding: 6px 8px;
    white-space: nowrap;
}

.tk-specs-table__model {
    font-weight: 600;
    text-align: left;
}

@media (max-width: 768px) {
    .tk-specs-table {
        min-width: 900px;
        font-size: 12px;
    }
}