/*
===============================================================================
 FILE: /okna-db/okna.css
 VERSION: 3.15
 PROJECT: ОКНА ORIGINAL — раздел профильных систем REHAU
 DATE: 2026-09-01

 v3.13:
 - добавлен блок-превью оконных ручек на /okna/;
 - 3 карточки REHAU + адаптивная сетка + ссылка на /handles/.

 v3.12:
 - FIX: изображения быстрого выбора теперь задаются прямо background-image карточки;
 - полностью убрана зависимость от ::before / z-index;
 - для каждой системы прописан явный URL WebP;
 - белый градиент остаётся отдельным верхним background-слоем.

 v3.11:
 - FIX: фоновые WebP быстрого выбора больше не уходят под белый фон карточки;
 - псевдо-слои подняты в видимый stacking context;
 - текст карточек поднят поверх фоновой иллюстрации;
 - ослаблен белый градиент справа для лучшей видимости скетчей.

 v3.9:
 - quick-choice: добавлены декоративные псевдо-чертежи профилей;
 - фоновые скетчи временные, до замены по реальным сечениям;
 - hover стал выразительнее, но без резких эффектов.

 v3.8:
 - hero раздела получил локальный технический фон /images/okna/hero-profiles-tech.webp;
 - добавлены затемнение, glass-факты и адаптивное позиционирование.

 v3.5.1:
 - REHAU-акценты на quick-choice и карточках сделаны заметнее, но без изменения основной палитры сайта;
 - добавлена цветная левая грань быстрых карточек и более выраженный hover.

 v3.5:
 - повышена версия ассета CSS до 3.5 для корректного сброса кеша браузера.

 v3.4:
 - добавлены фирменные REHAU-акценты: красный #E32636, бирюзовый #4ECDC4, антрацит #363636;
 - акценты используются дозированно: декоративные линии, маркеры, hover и связанные профили;
 - добавлены стили контекстной перелинковки и активной профильной навигации.

 v3.3:
 - добавлена адаптивная сетка SEO-контентных карточек на страницах профилей;
 - стили контентных блоков изолированы селекторами okna-seo-*;
 - desktop: 2 колонки, mobile: 1 колонка.

 v3.2:
 - SEO navigation chips for short, explicit profile links;
 - responsive wrapping without layout overflow.

 v3.1:
 - все основные изображения профилей локальные WEBP;
 - галерея подхватывает локальные техизображения из technical/<profile>/drawings;
 - документация оформлена для локальных файлов;
 - пустые каталоги материалов не создают пустых блоков;
 - все селекторы изолированы префиксом okna-*.
===============================================================================
*/
:root {
    --okna-blue: #0759a8;
    --okna-deep: #082c59;
    --okna-cyan: #00a6a6;
    --okna-magenta: #e50055;
    --okna-muted: #61738a;
    --okna-line: #dfe8f1;
    --okna-soft: #f3f7fa;
    --okna-dark: #101c2b;
    --rehau-red: #E32636;
    --rehau-turquoise: #4ECDC4;
    --rehau-anthracite: #363636;
}

.okna-page {
    max-width: 1440px;
    margin: 0 auto;
    padding: 36px 18px 72px;
    color: var(--text)
}

.okna-kicker {
    display: block;
    font-size: 11px;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--okna-blue)
}

.okna-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
    gap: 40px;
    align-items: end;
    padding: 60px clamp(28px, 5vw, 72px);
    border-radius: 26px;
    background: radial-gradient(circle at 88% 12%, rgba(0, 166, 166, .23), transparent 28%), radial-gradient(circle at 100% 100%, rgba(229, 0, 85, .14), transparent 27%), linear-gradient(118deg, #061c35 0%, #083b6a 58%, #075fa2 100%);
    box-shadow: 0 18px 48px rgba(8, 44, 89, .14);
    color: #fff
}

.okna-hero .okna-kicker,
.okna-cta .okna-kicker {
    color: #a9dcf5
}

.okna-hero h1 {
    max-width: 850px;
    margin: 10px 0 18px;
    font-size: clamp(38px, 5.4vw, 72px);
    line-height: 1.02;
    font-weight: 700;
    letter-spacing: -.045em;
    color: #fff
}

.okna-hero h1 span {
    color: #75d9ed
}

.okna-hero p {
    max-width: 760px;
    margin: 0;
    color: rgba(255, 255, 255, .82);
    font-size: 17px;
    line-height: 1.65
}

.okna-hero-actions,
.okna-profile-actions,
.okna-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 11px;
    margin-top: 28px
}

.okna-btn-dark {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .2);
    color: #fff
}

.okna-btn-dark:hover {
    background: rgba(255, 255, 255, .15)
}

.okna-btn-light {
    background: #fff;
    border: 1px solid var(--okna-line);
    color: var(--okna-deep)
}

.okna-hero-facts {
    display: grid;
    gap: 10px
}

.okna-hero-facts div {
    padding: 18px 20px;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 16px;
    background: rgba(255, 255, 255, .08);
    backdrop-filter: blur(7px)
}

.okna-hero-facts strong {
    display: block;
    font-size: 30px;
    line-height: 1;
    color: #fff
}

.okna-hero-facts span {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: rgba(255, 255, 255, .7)
}

.okna-guide,
.okna-profiles,
.okna-compare,
.okna-specs,
.okna-gallery-section,
.okna-docs-section {
    margin-top: 48px
}

.okna-section-head {
    margin-bottom: 20px
}

.okna-section-head h2 {
    margin: 7px 0 0;
    font-size: clamp(27px, 3vw, 39px);
    line-height: 1.13;
    color: var(--okna-deep);
    letter-spacing: -.035em
}

.okna-section-head p {
    max-width: 740px;
    margin: 8px 0 0;
    color: var(--okna-muted);
    font-size: 13px
}

.okna-section-head-split {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px
}

.okna-guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px
}

.okna-guide-grid a {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    min-height: 178px;
    padding: 24px 44% 22px 22px;
    border: 1px solid var(--okna-line);
    border-radius: 19px;
    background-color: #ffffff;
    background-repeat: no-repeat, no-repeat;
    background-position: center, 105% center;
    background-size: 100% 100%, 95% auto;
    text-decoration: none;
    color: var(--text);
    box-shadow: 0 8px 26px rgba(21, 52, 82, .035);
    transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.okna-guide-grid a::before {
    content: none !important;
    display: none !important
}

.okna-guide-grid a::after {
    content: none !important;
    display: none !important
}

.okna-guide-grid a:hover {
    transform: translateY(-3px);
    border-color: #a7c4db;
    box-shadow: 0 16px 36px rgba(21, 52, 82, .11);
}

.okna-guide-grid span,
.okna-guide-grid small {
    display: block;
    color: var(--okna-muted)
}

.okna-guide-grid span {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: .08em
}

.okna-guide-grid strong {
    display: block;
    margin: 12px 0 8px;
    font-size: 23px;
    color: var(--okna-deep)
}

.okna-guide-grid small {
    font-size: 16px;
    line-height: 1.45
}

.okna-guide-card--blitz {
    background-image:
        linear-gradient(90deg,
            #fff 0%,
            rgba(255, 255, 255, .98) 36%,
            rgba(255, 255, 255, .74) 51%,
            rgba(255, 255, 255, .12) 100%),
        url('/images/okna/quick-choice/blitz.webp') !important;
}

.okna-guide-card--constanta {
    background-image: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, .98) 36%, rgba(255, 255, 255, .74) 51%, rgba(255, 255, 255, .12) 100%), url('/images/okna/quick-choice/constanta.webp') !important;
}

.okna-guide-card--grazio {
    background-image: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, .98) 36%, rgba(255, 255, 255, .74) 51%, rgba(255, 255, 255, .12) 100%), url('/images/okna/quick-choice/grazio.webp') !important;
}

.okna-guide-card--delight {
    background-image: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, .98) 36%, rgba(255, 255, 255, .74) 51%, rgba(255, 255, 255, .12) 100%), url('/images/okna/quick-choice/delight.webp') !important;
}

.okna-guide-card--intelio {
    background-image: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, .98) 36%, rgba(255, 255, 255, .74) 51%, rgba(255, 255, 255, .12) 100%), url('/images/okna/quick-choice/intelio.webp') !important;
}

.okna-guide-card--diamant {
    background-image: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, .98) 36%, rgba(255, 255, 255, .74) 51%, rgba(255, 255, 255, .12) 100%), url('/images/okna/quick-choice/diamant.webp') !important;
}

.okna-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 7px
}

.okna-chip {
    padding: 8px 12px;
    border: 1px solid var(--okna-line);
    border-radius: 999px;
    background: #fff;
    color: var(--okna-muted);
    font: inherit;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer
}

.okna-chip.active {
    border-color: var(--okna-deep);
    background: var(--okna-deep);
    color: #fff
}

.okna-profiles-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px
}

.okna-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--okna-line);
    border-radius: 22px;
    box-shadow: 0 9px 28px rgba(21, 52, 82, .045);
    transition: .25s ease
}

.okna-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 38px rgba(21, 52, 82, .095)
}

.okna-card-image {
    position: relative;
    display: block;
    height: 245px;
    padding: 13px;
    background: linear-gradient(180deg, #fff, #f8fafc);
    border-bottom: 1px solid rgba(223, 232, 241, .72)
}

.okna-card-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain
}

.okna-card-image span {
    position: absolute;
    left: 18px;
    bottom: 16px;
    padding: 6px 9px;
    border: 1px solid rgba(223, 232, 241, .9);
    border-radius: 8px;
    background: rgba(255, 255, 255, .92);
    font-size: 10px;
    font-weight: 800;
    color: var(--okna-deep)
}

.okna-card-head {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 22px 24px 0
}

.okna-card-position {
    font-size: 10px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--okna-blue);
    font-weight: 800
}

.okna-card h3 {
    margin: 4px 0 3px;
    font-size: 29px;
    line-height: 1;
    color: var(--okna-deep)
}

.okna-card-head p {
    margin: 0;
    color: var(--okna-muted);
    font-size: 12px;
    line-height: 1.45
}

.okna-card-head>strong {
    height: max-content;
    padding: 6px 9px;
    border-radius: 9px;
    background: #edf6fc;
    color: var(--okna-blue);
    font-size: 12px;
    white-space: nowrap
}

.okna-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 7px;
    padding: 18px 24px 0
}

.okna-metrics div {
    padding: 11px;
    border-radius: 12px;
    background: var(--okna-soft)
}

.okna-metrics b,
.okna-metrics span {
    display: block
}

.okna-metrics b {
    font-size: 18px;
    color: var(--okna-deep)
}

.okna-metrics span {
    margin-top: 2px;
    font-size: 10px;
    color: var(--okna-muted)
}

.okna-card-summary {
    flex: 1;
    margin: 0;
    padding: 17px 24px;
    color: #40566c;
    font-size: 13px;
    line-height: 1.6
}

.okna-card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 0 24px 20px
}

.okna-more {
    font-weight: 800;
    color: var(--okna-deep);
    text-decoration: none;
    font-size: 13px
}

.okna-more span {
    color: var(--okna-cyan)
}

.okna-compare-check {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--okna-muted);
    font-size: 11px;
    cursor: pointer
}

.okna-compare-check input {
    accent-color: var(--okna-blue)
}

.okna-catalog-link {
    display: block;
    padding: 12px 24px;
    border-top: 1px solid var(--okna-line);
    background: #fbfdff;
    text-decoration: none;
    color: var(--okna-blue);
    font-size: 11px;
    font-weight: 700
}

.okna-text-btn {
    border: 0;
    background: transparent;
    color: var(--okna-blue);
    font: inherit;
    font-size: 12px;
    font-weight: 800;
    cursor: pointer
}

.okna-table-wrap,
.okna-spec-table {
    overflow: auto;
    border: 1px solid var(--okna-line);
    border-radius: 18px;
    background: #fff
}

.okna-table-wrap table,
.okna-spec-table table {
    width: 100%;
    border-collapse: collapse
}

.okna-table-wrap table {
    min-width: 940px
}

.okna-table-wrap th,
.okna-table-wrap td,
.okna-spec-table th,
.okna-spec-table td {
    padding: 14px 15px;
    border-bottom: 1px solid var(--okna-line);
    text-align: left;
    vertical-align: top;
    font-size: 12px;
    line-height: 1.45
}

.okna-table-wrap thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--okna-deep);
    color: #fff
}

.okna-table-wrap thead a {
    color: #fff;
    text-decoration: none
}

.okna-table-wrap tbody th,
.okna-spec-table th {
    background: #f8fafc;
    color: var(--okna-deep);
    font-weight: 700
}

.okna-table-wrap tbody th {
    min-width: 255px
}

.okna-estimate {
    display: inline-grid;
    place-items: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff0d7;
    color: #9a6100;
    font-weight: 800
}

.is-estimated {
    background: #fffaf2
}

.okna-spec-table th {
    width: 42%
}

.okna-spec-table td small {
    display: block;
    margin-top: 4px;
    color: var(--okna-muted);
    font-size: 10px
}

.okna-cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
    align-items: center;
    margin-top: 40px;
    padding: 31px 35px;
    border-radius: 21px;
    background: radial-gradient(circle at 82% 0%, rgba(0, 166, 166, .22), transparent 28%), radial-gradient(circle at 100% 110%, rgba(229, 0, 85, .12), transparent 27%), linear-gradient(115deg, #07294e 0%, #084b84 55%, #0968ad 100%);
    color: #fff;
    box-shadow: 0 14px 36px rgba(8, 44, 89, .14)
}

.okna-cta h2 {
    margin: 7px 0 8px;
    font-size: clamp(24px, 2.5vw, 32px);
    color: #fff
}

.okna-cta p {
    max-width: 680px;
    margin: 0;
    color: rgba(255, 255, 255, .8);
    font-size: 13px;
    line-height: 1.55
}

.okna-cta-actions {
    margin-top: 0;
    justify-content: flex-end
}

.okna-source,
.okna-gallery-note {
    margin: 18px 0 0;
    color: var(--okna-muted);
    font-size: 11px;
    line-height: 1.5
}

.okna-breadcrumb {
    max-width: none;
    margin: 0 0 16px;
    padding: 0
}

.okna-profile-page {
    padding-top: 22px
}

.okna-profile-hero {
    display: grid;
    grid-template-columns: 1fr .88fr;
    gap: 30px;
    align-items: center;
    padding: 38px 42px;
    border: 1px solid var(--okna-line);
    border-radius: 25px;
    background: #fff
}

.okna-profile-copy h1 {
    margin: 8px 0 15px;
    font-size: clamp(38px, 5vw, 64px);
    line-height: 1;
    color: var(--okna-deep)
}

.okna-profile-lead {
    max-width: 700px;
    margin: 0;
    color: #40566c;
    font-size: 16px;
    line-height: 1.65
}

.okna-profile-visual {
    height: 390px;
    padding: 18px;
    border-radius: 19px;
    background: linear-gradient(180deg, #fff, #f4f7f9)
}

.okna-profile-visual img {
    width: 100%;
    height: 100%;
    object-fit: contain
}

.okna-profile-kpis {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 11px;
    margin-top: 16px
}

.okna-profile-kpis div {
    padding: 18px 20px;
    border: 1px solid var(--okna-line);
    border-radius: 16px;
    background: #fff
}

.okna-profile-kpis b,
.okna-profile-kpis span {
    display: block
}

.okna-profile-kpis b {
    font-size: 25px;
    color: var(--okna-deep)
}

.okna-profile-kpis span {
    margin-top: 4px;
    font-size: 11px;
    color: var(--okna-muted)
}

.okna-profile-two-col {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 16px;
    margin-top: 34px
}

.okna-info-card {
    padding: 27px;
    border: 1px solid var(--okna-line);
    border-radius: 19px;
    background: #fff
}

.okna-info-card h2 {
    margin: 7px 0 12px;
    font-size: 26px;
    color: var(--okna-deep)
}

.okna-info-card p,
.okna-info-card li {
    color: #40566c;
    font-size: 13px;
    line-height: 1.65
}

.okna-info-card p+p {
    margin-top: 11px
}

.okna-info-card ul {
    margin: 10px 0 0;
    padding-left: 19px
}

.okna-info-card li+li {
    margin-top: 4px
}

.okna-kicker-gap {
    margin-top: 23px
}

.okna-gallery {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 13px
}

.okna-gallery-single {
    grid-template-columns: minmax(0, 680px)
}

.okna-gallery figure {
    overflow: hidden;
    margin: 0;
    border: 1px solid var(--okna-line);
    border-radius: 18px;
    background: #fff
}

.okna-gallery img {
    display: block;
    width: 100%;
    height: 270px;
    object-fit: contain;
    background: #f8fafc
}

.okna-gallery-main img {
    height: 270px
}

.okna-gallery figcaption {
    padding: 10px 13px;
    color: var(--okna-muted);
    font-size: 11px
}

.okna-docs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px
}

.okna-docs a {
    position: relative;
    min-height: 120px;
    padding: 20px;
    border: 1px solid var(--okna-line);
    border-radius: 17px;
    background: #fff;
    text-decoration: none;
    color: var(--text);
    transition: .2s
}

.okna-docs a:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(21, 52, 82, .08)
}

.okna-docs strong,
.okna-docs small {
    display: block
}

.okna-docs strong {
    padding-right: 28px;
    color: var(--okna-deep);
    font-size: 14px
}

.okna-docs small {
    margin-top: 7px;
    color: var(--okna-muted);
    font-size: 11px
}

.okna-doc-icon {
    position: absolute;
    right: 17px;
    top: 15px;
    color: var(--okna-cyan);
    font-size: 18px
}

@media(max-width:1100px) {
    .okna-guide-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr))
    }

    .okna-profiles-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .okna-hero {
        grid-template-columns: 1fr
    }

    .okna-hero-facts {
        grid-template-columns: repeat(3, 1fr)
    }
}

@media(max-width:760px) {
    .okna-guide-grid {
        grid-template-columns: 1fr
    }

    .okna-guide-grid a {
        min-height: 160px;
        padding-right: 38%
    }

    .okna-guide-grid a {
        background-size: 100% 100%, 68% auto;
        background-position: center, 115% center
    }

    .okna-page {
        padding: 20px 13px 50px
    }

    .okna-hero {
        padding: 37px 24px;
        border-radius: 20px
    }

    .okna-hero-facts {
        grid-template-columns: 1fr
    }

    .okna-guide-grid,
    .okna-profiles-grid,
    .okna-profile-kpis,
    .okna-profile-two-col,
    .okna-gallery,
    .okna-docs {
        grid-template-columns: 1fr
    }

    .okna-section-head-split,
    .okna-cta {
        display: block
    }

    .okna-chips {
        justify-content: flex-start;
        margin-top: 13px
    }

    .okna-card-image {
        height: 220px
    }

    .okna-cta-actions {
        justify-content: flex-start;
        margin-top: 20px
    }

    .okna-profile-hero {
        grid-template-columns: 1fr;
        padding: 27px 22px
    }

    .okna-profile-visual {
        height: 300px
    }

    .okna-gallery img,
    .okna-gallery-main img {
        height: 300px
    }

    .okna-spec-table th {
        width: 48%
    }
}

/* v3.2 — короткая внутренняя навигация профилей для UX и поисковых быстрых ссылок */
.okna-profile-nav {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    margin: .15rem 0 1.25rem
}

.okna-profile-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: .42rem .72rem;
    border: 1px solid var(--okna-line, #dfe5eb);
    border-radius: 999px;
    background: #fff;
    color: var(--okna-ink, #17202b);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .01em;
    text-decoration: none;
    white-space: nowrap;
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease
}

.okna-profile-nav a:hover {
    border-color: #9eb5ca;
    box-shadow: 0 6px 18px rgba(24, 42, 60, .08);
    transform: translateY(-1px)
}

@media(max-width:760px) {
    .okna-profile-nav {
        gap: .4rem
    }

    .okna-profile-nav a {
        font-size: .72rem;
        padding: .38rem .58rem
    }
}

/* =============================================================================
   SEO CONTENT BLOCKS — v3.3
   Короткие тематические блоки для поисковых интентов без keyword stuffing.
   ============================================================================= */
.okna-seo-content {
    margin-top: 54px;
}

.okna-seo-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.okna-seo-card {
    background: #fff;
    border: 1px solid var(--okna-line, #e7ebef);
    border-radius: 20px;
    padding: 24px 26px;
    box-shadow: 0 10px 28px rgba(20, 32, 50, .045);
}

.okna-seo-card h3 {
    margin: 0 0 10px;
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.25;
    letter-spacing: -.015em;
}

.okna-seo-card p {
    margin: 0;
    color: var(--okna-muted, #5f6974);
    font-size: 15px;
    line-height: 1.68;
}

.okna-seo-note {
    margin: 16px 2px 0;
    color: var(--okna-muted, #6a7480);
    font-size: 12px;
    line-height: 1.55;
}

@media (max-width: 760px) {
    .okna-seo-grid {
        grid-template-columns: 1fr;
    }

    .okna-seo-card {
        padding: 21px 20px;
    }
}

/* =============================================================================
   REHAU BRAND ACCENTS + INTERNAL LINKING — v3.4
   Небольшие акценты без перекрашивания основной дизайн-системы сайта.
   ============================================================================= */
.okna-hero::before,
.okna-profile-hero::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 4px;
    background: linear-gradient(90deg, var(--rehau-red) 0 33.333%, var(--rehau-turquoise) 33.333% 66.666%, var(--rehau-anthracite) 66.666% 100%);
}

.okna-profile-hero {
    position: relative;
    overflow: hidden
}

.okna-kicker::before {
    content: "";
    display: inline-block;
    width: 7px;
    height: 7px;
    margin: 0 8px 1px 0;
    border-radius: 2px;
    background: var(--rehau-red);
}

.okna-hero .okna-kicker::before,
.okna-cta .okna-kicker::before {
    background: var(--rehau-turquoise)
}

.okna-card {
    position: relative
}

.okna-card::before {
    content: "";
    position: absolute;
    z-index: 2;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--rehau-red), var(--rehau-turquoise), var(--rehau-anthracite));
    opacity: .9;
}

.okna-guide-grid a {
    box-shadow: inset 0 -3px 0 rgba(78, 205, 196, .72), 0 8px 26px rgba(21, 52, 82, .035)
}

.okna-guide-grid a:nth-child(3n+1) {
    box-shadow: inset 0 -3px 0 rgba(227, 38, 54, .72), 0 8px 26px rgba(21, 52, 82, .035)
}

.okna-guide-grid a:nth-child(3n) {
    box-shadow: inset 0 -3px 0 rgba(54, 54, 54, .58), 0 8px 26px rgba(21, 52, 82, .035)
}

.okna-guide-grid a:hover {
    box-shadow: inset 0 -4px 0 rgba(78, 205, 196, .82), 0 16px 36px rgba(21, 52, 82, .11)
}

.okna-guide-grid a:nth-child(3n+1):hover {
    box-shadow: inset 0 -4px 0 rgba(227, 38, 54, .82), 0 16px 36px rgba(21, 52, 82, .11)
}

.okna-guide-grid a:nth-child(3n):hover {
    box-shadow: inset 0 -4px 0 rgba(54, 54, 54, .72), 0 16px 36px rgba(21, 52, 82, .11)
}

.okna-more span,
.okna-related-link b {
    color: var(--rehau-red)
}

.okna-card-head>strong {
    background: rgba(78, 205, 196, .13);
    color: #176d68
}

.okna-profile-nav a,
.okna-profile-nav .is-current {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: .42rem .72rem;
    border: 1px solid var(--okna-line, #dfe5eb);
    border-radius: 999px;
    background: #fff;
    color: var(--okna-ink, #17202b);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .01em;
    text-decoration: none;
    white-space: nowrap;
}

.okna-profile-nav a:hover {
    border-color: var(--rehau-turquoise);
    box-shadow: 0 6px 18px rgba(78, 205, 196, .14);
}

.okna-profile-nav .is-current {
    border-color: var(--rehau-red);
    background: rgba(227, 38, 54, .06);
    color: var(--rehau-anthracite);
}

.okna-related {
    margin-top: 48px
}

.okna-related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.okna-related-card {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 190px;
    padding: 23px 24px 21px;
    border: 1px solid var(--okna-line);
    border-radius: 19px;
    background: #fff;
    color: var(--text);
    text-decoration: none;
    box-shadow: 0 9px 26px rgba(21, 52, 82, .04);
    transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.okna-related-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--rehau-red);
}

.okna-related-card:nth-child(2)::before {
    background: var(--rehau-turquoise)
}

.okna-related-card:nth-child(3)::before {
    background: var(--rehau-anthracite)
}

.okna-related-card:hover {
    transform: translateY(-3px);
    border-color: #c9d8e4;
    box-shadow: 0 15px 34px rgba(21, 52, 82, .09);
}

.okna-related-label {
    color: var(--okna-muted);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.okna-related-card strong {
    margin-top: 10px;
    color: var(--okna-deep);
    font-size: 22px;
    line-height: 1.15;
}

.okna-related-card p {
    flex: 1;
    margin: 10px 0 15px;
    color: #40566c;
    font-size: 13px;
    line-height: 1.58;
}

.okna-related-link {
    color: var(--okna-deep);
    font-size: 12px;
    font-weight: 800;
}

@media(max-width:900px) {
    .okna-related-grid {
        grid-template-columns: 1fr
    }
}

@media(max-width:760px) {
    .okna-profile-nav .is-current {
        font-size: .72rem;
        padding: .38rem .58rem
    }
}

/* REHAU ACCENT VISIBILITY FIX — v3.5.1 */
.okna-guide-grid a {
    border-left: 4px solid var(--rehau-red);
}

.okna-guide-grid a:nth-child(3n+2) {
    border-left-color: var(--rehau-turquoise);
}

.okna-guide-grid a:nth-child(3n) {
    border-left-color: var(--rehau-anthracite);
}

.okna-guide-grid a:hover {
    border-color: #cad7e2;
    border-left-color: var(--rehau-red);
    box-shadow: 0 14px 34px rgba(25, 47, 68, .10);
    transform: translateY(-2px);
}

.okna-guide-grid a:nth-child(3n+2):hover {
    border-left-color: var(--rehau-turquoise);
}

.okna-guide-grid a:nth-child(3n):hover {
    border-left-color: var(--rehau-anthracite);
}

.okna-card::before {
    height: 4px;
    opacity: 1;
}

.okna-section-head .okna-kicker {
    color: var(--rehau-anthracite);
}

/* =============================================================================
   OKNA TECH HERO — v3.8
   ============================================================================= */
.okna-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    min-height: 430px;
    background: #17202a url('/images/okna/hero-profiles-tech.webp') center center/cover no-repeat;
    color: #fff;
    box-shadow: 0 18px 42px rgba(16, 31, 47, .13);
}

.okna-hero::after {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0;
    background: linear-gradient(90deg, rgba(14, 23, 32, .96) 0%, rgba(15, 25, 35, .90) 39%, rgba(15, 25, 35, .58) 61%, rgba(15, 25, 35, .22) 100%);
}

.okna-hero-copy {
    position: relative;
    z-index: 1;
    align-self: center;
    max-width: 720px
}

.okna-hero h1,
.okna-hero h1 span {
    color: #fff;
    text-shadow: 0 5px 20px rgba(0, 0, 0, .22)
}

.okna-hero p {
    color: #e1e9ef;
    text-shadow: 0 2px 10px rgba(0, 0, 0, .18)
}

.okna-hero .okna-kicker {
    color: #d5e3ec
}

.okna-hero-facts {
    position: relative;
    z-index: 1;
    align-self: end
}

.okna-hero-facts>div {
    border: 1px solid rgba(255, 255, 255, .18);
    background: rgba(9, 17, 25, .50);
    backdrop-filter: blur(8px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, .12);
}

.okna-hero-facts strong {
    color: #fff
}

.okna-hero-facts span {
    color: #dce5ec
}

.okna-hero .okna-btn-dark {
    background: rgba(255, 255, 255, .08) !important;
    border-color: rgba(255, 255, 255, .42) !important;
    color: #fff !important
}

.okna-hero .okna-btn-dark:hover {
    background: rgba(255, 255, 255, .15) !important;
    border-color: var(--rehau-turquoise) !important
}

@media(max-width:1100px) {
    .okna-hero {
        background-position: 62% center
    }

    .okna-hero::after {
        background: linear-gradient(90deg, rgba(14, 23, 32, .96) 0%, rgba(15, 25, 35, .87) 60%, rgba(15, 25, 35, .46) 100%)
    }
}

@media(max-width:760px) {
    .okna-hero {
        min-height: 500px;
        background-position: 68% center
    }

    .okna-hero::after {
        background: linear-gradient(180deg, rgba(14, 23, 32, .95) 0%, rgba(15, 25, 35, .88) 60%, rgba(15, 25, 35, .55) 100%)
    }

    .okna-hero-facts>div {
        background: rgba(9, 17, 25, .62)
    }
}

/* v3.6 — node drawing links */
.okna-node-link{
  color:#315f7c;
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.okna-node-link:hover{color:#203f54}
.okna-node-link.is-pending{
  text-decoration-style:dashed;
  cursor:default;
}


/* ===== Оконные ручки: превью на /okna/ ===== */
.okna-handles{margin-top:48px}.okna-text-link{text-decoration:none;white-space:nowrap}.okna-handles-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.okna-handle-card{min-width:0;display:grid;grid-template-columns:165px minmax(0,1fr);align-items:center;gap:14px;min-height:170px;padding:12px;overflow:hidden;border:1px solid var(--okna-line);border-radius:18px;background:#fff;color:inherit;text-decoration:none;box-shadow:0 8px 24px rgba(8,44,89,.05);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.okna-handle-card:hover{transform:translateY(-2px);border-color:#b9d1d8;box-shadow:0 15px 32px rgba(8,44,89,.09)}.okna-handle-card__image{height:155px;display:grid;place-items:center;overflow:hidden;border-radius:14px;background:#fff}.okna-handle-card__image img{display:block;max-width:88%;max-height:140px;width:auto;height:auto;object-fit:contain;filter:drop-shadow(0 10px 10px rgba(30,49,58,.12))}.okna-handle-card__copy{min-width:0}.okna-handle-card__copy small{display:block;margin-bottom:4px;color:#8497a1;font-size:11px;letter-spacing:.1em;text-transform:uppercase}.okna-handle-card__copy strong{display:block;color:var(--okna-deep);font-size:23px;font-weight:500}.okna-handle-card__copy span{display:block;margin-top:7px;color:var(--okna-muted);font-size:12px;line-height:1.4}@media(max-width:1050px){.okna-handles-grid{grid-template-columns:1fr}.okna-handle-card{grid-template-columns:180px minmax(0,1fr)}}@media(max-width:560px){.okna-handle-card{grid-template-columns:120px minmax(0,1fr);min-height:140px}.okna-handle-card__image{height:115px}.okna-handle-card__image img{max-height:100px}}