* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            overflow-x: hidden;
            width: 100%;
            max-width: 100%;
        }

        body {
            font-family: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: #0a0a0a;
            overflow-x: hidden;
            overflow-y: auto;
            width: 100%;
            max-width: 100%;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ==========================================================================
           1. Компонент кнопки BURN (.burn-btn)
           ========================================================================== */
        :root {
            --btn-radius: 12px;
            --btn-height: 48px;
            --btn-font-size: 15px;
            --btn-font-weight: 500;
            --btn-transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
            --burn-grad-orange: linear-gradient(135deg, #ff3407 0%, #fc964c 45%, #f62f03 80%, #fd7c34 100%);
            --btn-stroke-color: rgba(255, 255, 255, 0.16);
        }

        .burn-btn {
            font-size: var(--btn-font-size);
            font-weight: var(--btn-font-weight);
            color: #ffffff;
            height: var(--btn-height);
            border-radius: var(--btn-radius);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 0 28px;
            transition: var(--btn-transition);
            overflow: hidden;
            text-decoration: none;
            cursor: pointer;
            border: none;
            background: transparent;
            font-family: inherit;
            user-select: none;
            white-space: nowrap;
            -webkit-tap-highlight-color: transparent;
        }

        .burn-btn .hover {
            height: 1.2em;
            overflow: hidden;
            position: relative;
            z-index: 5;
            display: inline-block;
            line-height: 1.2;
        }

        .burn-btn .hover span {
            display: block;
            transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }

        @media (pointer: fine) {
            .burn-btn:hover .hover span {
                transform: translateY(-100%);
            }
        }

        .burn-btn .bbg {
            background: #ffffff;
            display: block;
            position: absolute;
            top: 0;
            left: 0;
            z-index: 2;
            width: 100%;
            height: 100%;
            opacity: 0.32;
            transition: var(--btn-transition);
            border-radius: var(--btn-radius);
        }

        .burn-btn .grad-layer {
            position: absolute;
            inset: 0;
            border-radius: var(--btn-radius);
            background: var(--burn-grad-orange);
            opacity: 0;
            z-index: 3;
            transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
            pointer-events: none;
        }

        .burn-btn:hover .bbg {
            opacity: 0.15;
        }

        .burn-btn:hover .grad-layer {
            opacity: 0.55;
        }

        .burn-btn.grad-stroke {
            position: relative;
        }

        .burn-btn.grad-stroke:before {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            z-index: 10;
            width: 20px;
            display: block;
            content: "";
            border: 1px solid var(--btn-stroke-color);
            border-right: none;
            border-radius: var(--btn-radius) 0 0 var(--btn-radius);
            pointer-events: none;
        }

        .burn-btn.grad-stroke:after {
            position: absolute;
            top: 0;
            bottom: 0;
            right: 0;
            z-index: 10;
            width: 20px;
            display: block;
            content: "";
            border: 1px solid var(--btn-stroke-color);
            border-left: none;
            border-radius: 0 var(--btn-radius) var(--btn-radius) 0;
            pointer-events: none;
        }

        .burn-btn.grad-stroke > .gs:before {
            background: linear-gradient(90deg, var(--btn-stroke-color) 20%, transparent 50%, transparent 70%, var(--btn-stroke-color) 100%);
            position: absolute;
            top: 0;
            left: 21px;
            right: 21px;
            z-index: 10;
            height: 1px;
            display: block;
            content: "";
            pointer-events: none;
        }

        .burn-btn.grad-stroke > .gs:after {
            background: linear-gradient(90deg, var(--btn-stroke-color) 20%, transparent 50%, transparent 70%, var(--btn-stroke-color) 100%);
            position: absolute;
            bottom: 0;
            left: 21px;
            right: 21px;
            z-index: 10;
            height: 1px;
            display: block;
            content: "";
            pointer-events: none;
        }

        /* ==========================================================================
           2. Компонент шапки и меню навигации BURN (.top-nav-zone)
           ========================================================================== */
        .top-nav-zone {
            height: auto;
            min-height: 68px;
            background-color: #0a0a0a;
            width: 100%;
            flex-shrink: 0;
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            padding: 8px 48px;
            position: relative;
            z-index: 100;
            box-sizing: border-box;
            transition: background 0.3s ease, min-height 0.3s ease, padding 0.3s ease, border-color 0.3s ease;
        }

        .top-nav-zone.is-fixed {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            min-height: 50px;
            padding: 4px 48px;
            background: rgba(10, 10, 10, 0.78);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 998;
        }

        .top-nav-zone.is-fixed .header-logo img {
            height: 38px;
        }

        .nav-col-left {
            display: flex;
            align-items: center;
            gap: 18px;
            justify-content: flex-start;
        }

        .nav-col-center {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 12px;
        }

        .nav-col-right {
            display: flex;
            align-items: center;
            gap: 18px;
            justify-content: flex-end;
        }

        .top-menu-link {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            font-size: 13.5px;
            font-weight: 500;
            letter-spacing: -0.01em;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .top-menu-link:hover {
            color: #ffffff;
        }

        .top-menu-link.active {
            color: #ffffff;
            font-weight: 600;
        }

        .top-menu-link.cta-text {
            color: #f97316;
            font-weight: 600;
        }

        .top-menu-link.cta-text:hover {
            color: #fb923c;
        }

        .phones-wrapper {
            position: relative;
            display: inline-flex;
            align-items: center;
        }

        .phones-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            background: none;
            border: none;
            font-family: inherit;
            padding: 4px 0;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .phones-trigger:hover,
        .phones-wrapper.open .phones-trigger {
            color: #ffffff;
        }

        .phone-icon {
            display: inline-block;
            flex-shrink: 0;
            opacity: 0.75;
            transition: opacity 0.2s ease, transform 0.2s ease;
        }

        .phones-trigger:hover .phone-icon,
        .phones-wrapper.open .phone-icon {
            opacity: 1;
        }

        .phones-arrow {
            display: inline-block;
            transition: transform 0.25s ease;
            opacity: 0.6;
        }

        .phones-wrapper.open .phones-arrow {
            transform: rotate(180deg);
            opacity: 1;
        }

        .phones-dropdown {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            background: rgba(18, 20, 24, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 8px 0;
            min-width: 200px;
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
            display: none;
            flex-direction: column;
            z-index: 1000;
        }

        .phones-wrapper.open .phones-dropdown {
            display: flex;
        }

        .phone-item {
            padding: 8px 18px;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.2s ease, background 0.2s ease;
            white-space: nowrap;
        }

        .phone-item:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .header-logo {
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 0;
        }

        .header-logo img {
            height: 54px;
            width: auto;
            display: block;
            transition: height 0.3s ease;
        }

        .mobile-burger-btn,
        .mobile-menu-drawer {
            display: none !important;
        }

        @media (max-width: 1280px) and (min-width: 1081px) {
            .top-nav-zone {
                padding: 8px 24px;
            }
            .nav-col-left,
            .nav-col-right {
                gap: 12px;
            }
            .top-menu-link {
                font-size: 12.5px;
            }
        }

        @media (max-width: 1080px) {
            .top-nav-zone {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 10px 24px;
                min-height: 60px;
            }

            .top-nav-zone.is-fixed {
                min-height: 54px;
                padding: 6px 24px;
            }

            .nav-col-left,
            .nav-col-right .top-menu-link {
                display: none !important;
            }

            .nav-col-center {
                order: 1;
                padding: 0;
                justify-content: flex-start;
                flex-shrink: 0;
            }

            .nav-col-right {
                order: 2;
                display: flex;
                align-items: center;
                gap: 12px;
                flex-shrink: 0;
            }

            .header-logo img {
                height: 44px;
            }

            .top-nav-zone.is-fixed .header-logo img {
                height: 36px;
            }

            .mobile-burger-btn {
                display: flex !important;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 6px;
                width: 42px;
                height: 42px;
                background: rgba(255, 255, 255, 0.04);
                border: 1px solid rgba(255, 255, 255, 0.12);
                border-radius: 8px;
                cursor: pointer;
                padding: 0;
                box-sizing: border-box;
                transition: background 0.2s ease, border-color 0.2s ease;
                z-index: 10;
            }

            .mobile-burger-btn:hover {
                background: rgba(255, 255, 255, 0.08);
                border-color: rgba(255, 255, 255, 0.25);
            }

            .mobile-burger-btn .burger-line {
                width: 20px;
                height: 1.5px;
                background-color: #ffffff;
                border-radius: 1px;
                transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
            }

            .mobile-menu-drawer {
                display: block !important;
                position: fixed;
                inset: 0;
                z-index: 2000;
                visibility: hidden;
                pointer-events: none;
                transition: visibility 0.35s ease;
            }

            .mobile-menu-drawer.open {
                visibility: visible;
                pointer-events: auto;
            }

            .mobile-menu-backdrop {
                position: absolute;
                inset: 0;
                background: rgba(0, 0, 0, 0.72);
                -webkit-backdrop-filter: blur(10px);
                backdrop-filter: blur(10px);
                opacity: 0;
                transition: opacity 0.35s ease;
            }

            .mobile-menu-drawer.open .mobile-menu-backdrop {
                opacity: 1;
            }

            .mobile-menu-container {
                position: absolute;
                top: 0;
                right: 0;
                bottom: 0;
                width: 100%;
                max-width: 380px;
                background: #0c0c0c;
                border-left: 1px solid rgba(255, 255, 255, 0.1);
                display: flex;
                flex-direction: column;
                transform: translateX(100%);
                transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
                box-sizing: border-box;
                overflow-y: auto;
                overscroll-behavior: contain;
                box-shadow: -10px 0 35px rgba(0, 0, 0, 0.8);
            }

            .mobile-menu-drawer.open .mobile-menu-container {
                transform: translateX(0);
            }

            .mobile-menu-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 18px 24px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                background: #0a0a0a;
            }

            .mobile-menu-logo img {
                height: 42px;
                width: auto;
                display: block;
            }

            .mobile-menu-close {
                width: 40px;
                height: 40px;
                background: rgba(255, 255, 255, 0.04);
                border: 1px solid rgba(255, 255, 255, 0.12);
                border-radius: 8px;
                display: flex;
                align-items: center;
                justify-content: center;
                cursor: pointer;
                position: relative;
                padding: 0;
                transition: background 0.2s ease, border-color 0.2s ease;
            }

            .mobile-menu-close:hover {
                background: rgba(255, 255, 255, 0.08);
                border-color: rgba(255, 255, 255, 0.25);
            }

            .mobile-menu-close .close-line {
                position: absolute;
                width: 18px;
                height: 1.5px;
                background-color: #ffffff;
                border-radius: 1px;
            }

            .mobile-menu-close .line-1 {
                transform: rotate(45deg);
            }

            .mobile-menu-close .line-2 {
                transform: rotate(-45deg);
            }

            .mobile-menu-body {
                padding: 24px;
                display: flex;
                flex-direction: column;
                gap: 24px;
                flex: 1;
            }

            .mobile-nav-links {
                display: flex;
                flex-direction: column;
                gap: 14px;
            }

            .mobile-nav-link {
                color: rgba(255, 255, 255, 0.7);
                text-decoration: none;
                font-size: 16px;
                font-weight: 500;
                letter-spacing: -0.01em;
                padding: 6px 0;
                transition: color 0.2s ease, transform 0.2s ease;
                display: block;
            }

            .mobile-nav-link:hover {
                color: #ffffff;
                transform: translateX(4px);
            }

            .mobile-nav-link.active {
                color: #ffffff;
                font-weight: 600;
            }

            .mobile-menu-action {
                padding-top: 4px;
            }

            .mobile-cta-btn.burn-btn {
                width: 100%;
                height: 48px;
                font-size: 15px;
                font-weight: 600;
                border-radius: 12px;
                box-sizing: border-box;
                display: flex;
            }

            .mobile-cta-btn.burn-btn .grad-layer {
                opacity: 0.25;
            }

            .mobile-cta-btn.burn-btn:hover .grad-layer,
            .mobile-cta-btn.burn-btn:active .grad-layer {
                opacity: 0.75;
            }

            .mobile-menu-contacts {
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 20px;
                display: flex;
                flex-direction: column;
                gap: 12px;
            }

            .mobile-contacts-label {
                font-size: 11px;
                text-transform: uppercase;
                letter-spacing: 0.05em;
                color: rgba(255, 255, 255, 0.4);
                font-weight: 600;
            }

            .mobile-contacts-phones {
                display: flex;
                flex-direction: column;
                gap: 8px;
            }

            .mobile-phone-link {
                font-size: 16px;
                font-weight: 600;
                color: #ffffff;
                text-decoration: none;
                transition: color 0.2s ease;
            }

            .mobile-phone-link:hover {
                color: #f97316;
            }

            .mobile-email-link {
                font-size: 14px;
                color: rgba(255, 255, 255, 0.7);
                text-decoration: none;
                transition: color 0.2s ease;
            }

            .mobile-email-link:hover {
                color: #ffffff;
            }

            .mobile-address-text {
                font-size: 12.5px;
                color: rgba(255, 255, 255, 0.45);
                line-height: 1.4;
            }
        }

        @media (max-width: 540px) {
            .top-nav-zone,
            .top-nav-zone.is-fixed {
                padding-left: 14px;
                padding-right: 14px;
            }

            .header-logo img {
                height: 38px;
            }

            .top-nav-zone.is-fixed .header-logo img {
                height: 32px;
            }

            .phones-trigger .phones-current-text,
            .phones-trigger .phones-arrow {
                display: none !important;
            }

            .phones-trigger {
                padding: 10px 11px;
                min-height: 42px;
                border: 1px solid rgba(255, 255, 255, 0.12);
                border-radius: 8px;
            }

            .mobile-burger-btn {
                width: 42px;
                height: 42px;
            }

            .mobile-menu-container {
                max-width: 100%;
            }
        }

        /* ==========================================================================
           ИЗОЛИРОВАННЫЙ АДАПТИВ ХЕДЕРА ПОД ЦЕЛЕВЫЕ РАЗРЕШЕНИЯ
           ========================================================================== */

        /* 1. iPhone 16 Pro Max (Landscape: 956 x 440) и смартфоны в альбоме */
        @media screen and (max-height: 500px) and (orientation: landscape), screen and (width: 956px) and (height: 440px) {
            .top-nav-zone {
                padding: 6px 16px;
                min-height: 48px;
            }

            .top-nav-zone.is-fixed {
                padding: 4px 16px;
                min-height: 42px;
            }

            .header-logo img {
                height: 32px;
            }

            .top-nav-zone.is-fixed .header-logo img {
                height: 28px;
            }

            .nav-col-right {
                gap: 8px;
                flex-shrink: 0;
            }

            .phones-trigger .phones-current-text,
            .phones-trigger .phones-arrow {
                display: none !important;
            }

            .phones-trigger {
                padding: 8px 10px;
                min-height: 38px;
                border: 1px solid rgba(255, 255, 255, 0.12);
                border-radius: 8px;
            }

            .mobile-burger-btn {
                width: 38px;
                height: 38px;
                border-radius: 8px;
            }
        }

        /* 2. iPad Mini (Landscape: 1024 x 768) */
        @media screen and (width: 1024px) and (height: 768px), screen and (max-width: 1024px) and (min-width: 957px) and (orientation: landscape) {
            .top-nav-zone {
                padding: 8px 24px;
                min-height: 58px;
                width: 100%;
                max-width: 100%;
                box-sizing: border-box;
            }

            .nav-col-right {
                flex-shrink: 0;
                gap: 12px;
            }
        }

        body.mobile-menu-open {
            overflow: hidden !important;
            touch-action: none;
        }

        .stage-container {
            width: 100%;
            padding: 0 48px;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        @media (max-width: 768px) {
            .stage-container,
            .footer-inner {
                padding: 0 16px;
            }
        }

        #hero-viewport {
            width: 100%;
            height: 960px;
            min-height: 850px;
            border-radius: 24px 24px 0 0;
            overflow: visible;
            position: relative;
            z-index: 5;
            background: 
                linear-gradient(to bottom, transparent 60%, rgba(10, 10, 10, 0.7) 75%, #0a0a0a 90%),
                url("../images/grad-top.webp") 50% 0 / cover no-repeat,
                #0a0a0a;
        }

        .page-main #canvas-3d {
            pointer-events: none;
        }



        /* Гармоничный компактный отступ между калькулятором и блоком решений на главной */
        .page-main .section-calc {
            padding-bottom: 70px;
        }

        .page-main #solutions.section-additional {
            margin-top: 20px;
            padding-top: 20px;
        }

        .page-main #faq.psd-section {
            padding-top: 40px;
            padding-bottom: 80px;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .page-main .section-calc {
                padding-bottom: 45px;
            }
            .page-main #solutions.section-additional {
                margin-top: 15px;
                padding-top: 15px;
            }
            .page-main #faq.psd-section {
                padding-top: 30px;
                padding-bottom: 60px;
            }
        }

        @media (max-width: 768px) {
            .page-main .section-calc {
                padding-bottom: 30px;
            }
            .page-main #solutions.section-additional {
                margin-top: 10px;
                padding-top: 10px;
            }
            .page-main #faq.psd-section {
                padding-top: 20px;
                padding-bottom: 40px;
            }
        }

        #hero-viewport.hero-main-bg {
            background-image: 
                /* 1. Верхний защитный градиент: читаемость белого заголовка и 100% бесшовный уход в графит */
                linear-gradient(to bottom, rgba(10, 10, 10, 0.45) 0%, transparent 20%, transparent 48%, rgba(10, 10, 10, 0.82) 70%, #0a0a0a 86%),
                /* 2. Фирменный огненно-красный градиент BURN в полную силу */
                url("../images/grad-top.webp"),
                /* 3. Затемняющая вуаль (~45%), балансирующая яркость линий */
                linear-gradient(rgba(10, 10, 10, 0.45), rgba(10, 10, 10, 0.45)),
                /* 4. Стилизованная карта России со схемой коммуникаций и маркеров */
                url("../images/hero-bg-burn-markers-russia.webp");
            background-position: 
                center top,
                50% 0,
                center center,
                50% 22%;
            background-size: 
                100% 100%,
                cover,
                100% 100%,
                cover;
            background-repeat: 
                no-repeat,
                no-repeat,
                no-repeat,
                no-repeat;
            background-blend-mode: 
                normal,
                screen,
                normal,
                normal;
            background-color: #0a0a0a;
        }



        #hero-viewport.hero-gas-bg {
            background-image: 
                /* 1. Верхний защитный градиент: читаемость белого заголовка и 100% бесшовный уход в графит */
                linear-gradient(to bottom, rgba(10, 10, 10, 0.45) 0%, transparent 20%, transparent 48%, rgba(10, 10, 10, 0.82) 70%, #0a0a0a 86%),
                /* 2. Фирменный огненно-красный градиент BURN в полную силу */
                url("../images/grad-top.webp"),
                /* 3. Затемняющая вуаль (~62%), приглушающая яркость серого рельефа картинки */
                linear-gradient(rgba(10, 10, 10, 0.62), rgba(10, 10, 10, 0.62)),
                /* 4. Топографическая карта газопровода с маркерами */
                url("../images/hero-bg-gas.webp");
            background-position: 
                center top,
                50% 0,
                center center,
                50% 18%;
            background-size: 
                100% 100%,
                cover,
                100% 100%,
                cover;
            background-repeat: 
                no-repeat,
                no-repeat,
                no-repeat,
                no-repeat;
            background-blend-mode: 
                normal,
                screen,
                normal,
                normal;
            background-color: #0a0a0a;
        }



        #hero-viewport.hero-telecom-bg {
            background-image: 
                /* 1. Верхний защитный градиент: читаемость белого заголовка и 100% бесшовный уход в графит */
                linear-gradient(to bottom, rgba(10, 10, 10, 0.45) 0%, transparent 20%, transparent 48%, rgba(10, 10, 10, 0.82) 70%, #0a0a0a 86%),
                /* 2. Фирменный огненно-красный градиент BURN в полную силу */
                url("../images/grad-top.webp"),
                /* 3. Затемняющая вуаль (~60%), приглушающая яркость серого рельефа картинки */
                linear-gradient(rgba(10, 10, 10, 0.60), rgba(10, 10, 10, 0.60)),
                /* 4. Топографическая карта ВОЛС с маркерами связи */
                url("../images/hero-bg-telecom.webp");
            background-position: 
                center top,
                50% 0,
                center center,
                50% 18%;
            background-size: 
                100% 100%,
                cover,
                100% 100%,
                cover;
            background-repeat: 
                no-repeat,
                no-repeat,
                no-repeat,
                no-repeat;
            background-blend-mode: 
                normal,
                screen,
                normal,
                normal;
            background-color: #0a0a0a;
        }



        #hero-viewport.hero-production-bg {
            background-image: 
                /* 1. Верхний защитный градиент: читаемость белого заголовка и 100% бесшовный уход в графит */
                linear-gradient(to bottom, rgba(10, 10, 10, 0.45) 0%, transparent 20%, transparent 48%, rgba(10, 10, 10, 0.82) 70%, #0a0a0a 86%),
                /* 2. Фирменный огненно-красный градиент BURN в полную силу */
                url("../images/grad-top.webp"),
                /* 3. Затемняющая вуаль (~62%), приглушающая яркость фото производственного комплекса */
                linear-gradient(rgba(10, 10, 10, 0.62), rgba(10, 10, 10, 0.62)),
                /* 4. Фотография производственного комплекса в Туле */
                url("../images/hero-bg-production.webp");
            background-position: 
                center top,
                50% 0,
                center center,
                50% 30%;
            background-size: 
                100% 100%,
                cover,
                100% 100%,
                cover;
            background-repeat: 
                no-repeat,
                no-repeat,
                no-repeat,
                no-repeat;
            background-blend-mode: 
                normal,
                screen,
                normal,
                normal;
            background-color: #0a0a0a;
        }



        .page-designers #hero-viewport,
        #hero-viewport.hero-designers-bg {
            background-image: 
                /* 1. Верхний защитный градиент: читаемость белого заголовка и 100% бесшовный уход в графит */
                linear-gradient(to bottom, rgba(10, 10, 10, 0.45) 0%, transparent 20%, transparent 48%, rgba(10, 10, 10, 0.82) 70%, #0a0a0a 86%),
                /* 2. Фирменный огненно-красный градиент BURN в полную силу */
                url("../images/grad-top.webp"),
                /* 3. Затемняющая вуаль (~60%), балансирующая контрастность фона */
                linear-gradient(rgba(10, 10, 10, 0.60), rgba(10, 10, 10, 0.60)),
                /* 4. Фотография инженера-проектировщика за CAD-станцией */
                url("../images/hero-designers-bg.webp?v=2");
            background-position: 
                center top,
                50% 0,
                center center,
                50% 25%;
            background-size: 
                100% 100%,
                cover,
                100% 100%,
                cover;
            background-repeat: 
                no-repeat,
                no-repeat,
                no-repeat,
                no-repeat;
            background-blend-mode: 
                normal,
                screen,
                normal,
                normal;
            background-color: #0a0a0a;
        }

        #hero-viewport.hero-documents-bg {
            background-image: 
                /* 1. Верхний защитный градиент: читаемость белого заголовка и 100% бесшовный уход в графит */
                linear-gradient(to bottom, rgba(10, 10, 10, 0.45) 0%, transparent 20%, transparent 48%, rgba(10, 10, 10, 0.82) 70%, #0a0a0a 86%),
                /* 2. Фирменный огненно-красный градиент BURN в полную силу */
                url("../images/grad-top.webp"),
                /* 3. Затемняющая вуаль (~60%), балансирующая контрастность фона */
                linear-gradient(rgba(10, 10, 10, 0.60), rgba(10, 10, 10, 0.60)),
                /* 4. Фотография нормативно-технической документации и паспортов изделий */
                url("../images/hero-bg-documents.webp");
            background-position: 
                center top,
                50% 0,
                center center,
                50% 30%;
            background-size: 
                100% 100%,
                cover,
                100% 100%,
                cover;
            background-repeat: 
                no-repeat,
                no-repeat,
                no-repeat,
                no-repeat;
            background-blend-mode: 
                normal,
                screen,
                normal,
                normal;
            background-color: #0a0a0a;
        }

        /* Изолированный диапазон для планшетов */
        @media (min-width: 769px) and (max-width: 1080px) {
            #hero-viewport {
                height: 750px;
                min-height: 750px;
            }
        }

        @media (max-width: 768px) {
            #hero-viewport {
                height: 590px;
                min-height: 540px;
                border-radius: 16px 16px 0 0;
            }
        }

        @media (max-width: 480px) {
            #hero-viewport {
                height: 550px;
                min-height: 510px;
            }
        }

        /* Экран 1.1 — Секция манифеста и бегущей ленты параметров в стиле Mount Media */
        .section-weare {
            width: 100%;
            padding: 60px 0 70px;
            position: relative;
            z-index: 1;
            background: transparent;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        @media (min-width: 769px) and (max-width: 1400px) {
            .section-weare {
                padding: 32px 0 60px;
            }
        }

        @media (max-width: 768px) {
            .section-weare {
                padding: 28px 0 16px;
            }
        }

        .weare-content {
            width: 100%;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0 16px;
        }

        .weare-manifest {
            font: 300 clamp(40px, 4.8vw, 76px)/1.08 'Manrope', sans-serif;
            letter-spacing: -0.035em;
            text-align: center;
            color: #ffffff;
            margin: 0 0 24px;
            width: 100%;
            max-width: 1560px;
        }

        @media (max-width: 768px) {
            .weare-manifest {
                font-size: clamp(24px, 6.2vw, 36px);
                line-height: 1.15;
                margin-bottom: 16px;
            }
        }

        .weare-manifest .word {
            display: inline-block;
            margin-right: 0.22em;
            color: rgba(255, 255, 255, 0.25);
            transition: opacity 0.25s ease, filter 0.25s ease;
            will-change: opacity;
        }

        .weare-manifest .word.anim {
            background: linear-gradient(135deg, #ff3407 0%, #fc964c 45%, #f62f03 80%, #fd7c34 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            opacity: 1.0;
        }

        .weare-sub {
            text-align: center;
            font-size: clamp(16px, 1.2vw, 20px);
            font-weight: 300;
            color: rgba(255, 255, 255, 0.6);
            max-width: 880px;
            margin: 0 auto 52px;
            line-height: 1.45;
            letter-spacing: -0.01em;
        }

        @media (max-width: 768px) {
            .weare-sub {
                font-size: 13.5px;
                line-height: 1.4;
                margin-bottom: 32px;
                padding: 0 12px;
            }
        }

        /* Бегущая лента параметров во всю ширину экрана (1:1 стиль Mount Media) */
        .ticker-zone {
            width: 100%;
            overflow: hidden;
            position: relative;
            padding: 24px 0;
            margin: 8px 0 32px;
            border: none;
            mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
            -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
        }

        @media (max-width: 768px) {
            .ticker-zone {
                padding: 12px 0;
                margin: 4px 0 10px;
            }
        }

        .ticker-track {
            display: flex;
            width: max-content;
            animation: tickerSlide 35s linear infinite;
            align-items: center;
            will-change: transform;
        }

        .ticker-track:hover {
            animation-play-state: paused;
        }

        @keyframes tickerSlide {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .ticker-group {
            display: flex;
            align-items: center;
            gap: 48px;
            padding-right: 48px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .ticker-group {
                gap: 24px;
                padding-right: 24px;
            }
        }

        .ticker-item {
            display: flex;
            align-items: baseline;
            gap: 16px;
            white-space: nowrap;
        }

        @media (max-width: 768px) {
            .ticker-item {
                gap: 8px;
            }
        }

        .t-val {
            font-size: clamp(44px, 3.8vw, 66px);
            font-weight: 300;
            letter-spacing: -0.035em;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1;
        }

        @media (max-width: 768px) {
            .t-val {
                font-size: 24px;
                letter-spacing: -0.02em;
            }
        }

        .t-desc {
            font-size: clamp(14px, 1.0vw, 16px);
            font-weight: 400;
            color: rgba(255, 255, 255, 0.36);
            letter-spacing: -0.01em;
        }

        @media (max-width: 768px) {
            .t-desc {
                font-size: 12px;
            }
        }

        .t-sep {
            color: rgba(255, 255, 255, 0.16);
            font-size: 16px;
        }

        /* Экран 2 — Инженерный разбор конструктива и физика поля (Mount Media #transforming) */
        .section-transform {
            width: 100%;
            padding: 40px 32px 70px;
            position: relative;
            z-index: 10;
            background: transparent;
            box-sizing: border-box;
            overflow: visible;
        }

        @media (max-width: 768px) {
            .section-transform {
                padding: 20px 0 64px;
            }
        }

        #canvas-transform-3d {
            position: absolute;
            top: -450px;
            left: -350px;
            width: calc(100% + 700px);
            height: calc(100% + 950px);
            pointer-events: none;
            z-index: 1;
            display: block;
            outline: none;
            background: transparent !important;
        }

        .transform-wrap {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1.15fr;
            gap: 56px;
            align-items: center;
            width: 100%;
            box-sizing: border-box;
        }

        .transform-visual {
            position: relative;
            width: 100%;
            min-height: 600px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .transform-visual::before {
            content: '';
            position: absolute;
            width: 520px;
            height: 520px;
            left: 50%;
            top: 60%;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(255, 80, 20, 0.16) 0%, rgba(255, 60, 10, 0.05) 45%, transparent 70%);
            border-radius: 50%;
            filter: blur(55px);
            pointer-events: none;
            z-index: 0;
        }

        /* Фирменный тёмно-красный радиальный градиент BURN под 3D-анимацией на главной странице */
        .page-main .section-transform::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle 560px at 26% 50%, rgba(255, 52, 7, 0.32) 0%, rgba(246, 47, 3, 0.14) 36%, rgba(180, 20, 5, 0.03) 60%, transparent 76%);
            pointer-events: none;
            z-index: 0;
        }

        .page-main .transform-visual::before {
            display: none;
        }

        .gps-physics-diagram {
            position: relative;
            width: 100%;
            max-width: 540px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
        }

        .gps-physics-diagram svg {
            width: 100%;
            height: auto;
            max-height: 640px;
            display: block;
        }

        .transform-info {
            display: flex;
            flex-direction: column;
            width: 100%;
            box-sizing: border-box;
        }

        .transform-title {
            font-size: clamp(32px, 3.4vw, 56px);
            font-weight: 400;
            line-height: 1.12;
            letter-spacing: -0.03em;
            color: #ffffff;
            margin: 0 0 44px 0;
            max-width: 820px;
        }

        .transform-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            grid-auto-rows: 1fr;
            gap: 16px;
            width: 100%;
            box-sizing: border-box;
            align-items: stretch;
        }

        /* ==========================================================================
           ИЗОЛИРОВАННЫЙ АДАПТИВ БЛОКА 2 (#transforming)
           ========================================================================== */

        /* 1. iPad Pro 13 Portrait (1032 x 1376) — Вариант 2 (Заголовок -> Шарик -> Сетка 2x2) */
        @media screen and (width: 1032px) and (height: 1376px) {
            .section-transform {
                padding: 64px 0 95px;
            }
            .transform-wrap {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0;
                width: 100%;
            }
            .transform-info {
                display: contents;
            }
            .transform-title {
                order: 1;
                font-size: 40px;
                line-height: 1.15;
                text-align: center;
                margin: 0 auto 28px auto;
                max-width: 820px;
                width: 100%;
            }
            .transform-visual {
                order: 2;
                width: 100%;
                min-height: 420px;
                height: 420px;
                margin-top: 10px;
                margin-bottom: 36px;
                --transform-marker-scale: 0.50;
            }
            .transform-grid {
                order: 3;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                grid-auto-rows: 1fr;
                gap: 20px;
                align-items: stretch;
                width: 100%;
                max-width: 960px;
            }
            .t-card {
                padding: 32px 28px;
                min-height: 200px;
                height: 100%;
            }
            .page-main .section-transform::before {
                background: radial-gradient(circle 440px at 50% 32%, rgba(255, 52, 7, 0.28) 0%, rgba(246, 47, 3, 0.12) 36%, transparent 74%);
            }
        }

        /* 2. iPad Mini Landscape (1024 x 768) — Заголовок -> Шарик -> Сетка 2x2 */
        @media screen and (width: 1024px) and (height: 768px) {
            .section-transform {
                padding: 40px 0 64px;
            }
            .transform-wrap {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0;
                width: 100%;
            }
            .transform-info {
                display: contents;
            }
            .transform-title {
                order: 1;
                font-size: 32px;
                line-height: 1.15;
                text-align: center;
                margin: 0 auto 16px auto;
                max-width: 780px;
                width: 100%;
            }
            .transform-visual {
                order: 2;
                width: 100%;
                min-height: 280px;
                height: 280px;
                margin-top: 8px;
                margin-bottom: 24px;
                --transform-marker-scale: 0.36;
            }
            .transform-grid {
                order: 3;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                grid-auto-rows: 1fr;
                gap: 16px;
                align-items: stretch;
                width: 100%;
                max-width: 920px;
            }
            .t-card {
                padding: 24px 20px;
                min-height: 170px;
                height: 100%;
            }
            .page-main .section-transform::before {
                background: radial-gradient(circle 340px at 50% 30%, rgba(255, 52, 7, 0.26) 0%, rgba(246, 47, 3, 0.10) 36%, transparent 74%);
            }
        }

        /* 3. iPhone 16 Pro Max Landscape (956 x 440) — Заголовок -> Шарик -> Сетка 2x2 */
        @media screen and (max-height: 500px) and (orientation: landscape), screen and (width: 956px) and (height: 440px) {
            .section-transform {
                padding: 28px 0 48px;
            }
            .transform-wrap {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0;
                width: 100%;
            }
            .transform-info {
                display: contents;
            }
            .transform-title {
                order: 1;
                font-size: 26px;
                line-height: 1.15;
                text-align: center;
                margin: 0 auto 12px auto;
                max-width: 720px;
                width: 100%;
            }
            .transform-visual {
                order: 2;
                width: 100%;
                min-height: 220px;
                height: 220px;
                margin-top: 6px;
                margin-bottom: 18px;
                --transform-marker-scale: 0.24;
            }
            .transform-grid {
                order: 3;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                grid-auto-rows: 1fr;
                gap: 12px;
                align-items: stretch;
                width: 100%;
                max-width: 860px;
            }
            .t-card {
                padding: 16px 14px;
                border-radius: 12px;
                min-height: 130px;
                height: 100%;
            }
            .t-card-title {
                font-size: 14px;
                margin-bottom: 4px;
            }
            .t-card-text {
                font-size: 12px;
                line-height: 1.35;
            }
            .page-main .section-transform::before {
                background: radial-gradient(circle 260px at 50% 32%, rgba(255, 52, 7, 0.26) 0%, rgba(246, 47, 3, 0.10) 36%, transparent 74%);
            }
        }

        /* 4. Планшеты Portrait (768px - 1024px, включая iPad Mini и iPad Pro Portrait) */
        @media screen and (max-width: 1024px) and (min-width: 768px) {
            .section-transform {
                padding: 64px 0 80px;
            }
            .transform-wrap {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0;
            }
            .transform-info {
                display: contents;
            }
            .transform-title {
                order: 1;
                font-size: 34px;
                line-height: 1.15;
                text-align: center;
                margin-bottom: 20px;
                width: 100%;
                max-width: 680px;
            }
            .transform-visual {
                order: 2;
                width: 100%;
                min-height: 440px;
                height: 440px;
                margin-top: 10px;
                margin-bottom: 26px;
                --transform-marker-scale: 0.84;
            }
            .transform-grid {
                order: 3;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                grid-auto-rows: 1fr;
                gap: 16px;
                align-items: stretch;
                width: 100%;
            }
            .t-card {
                padding: 24px 20px;
                min-height: 190px;
                height: 100%;
            }
            .page-main .section-transform::before {
                background: radial-gradient(circle 380px at 50% 30%, rgba(255, 52, 7, 0.28) 0%, rgba(246, 47, 3, 0.12) 36%, transparent 74%);
            }
        }

        /* 5. Смартфоны Portrait (<= 767px - универсально для всех телефонов) */
        @media screen and (max-width: 767px) {
            .section-transform {
                padding: 48px 0 64px;
            }
            .transform-wrap {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0;
            }
            .transform-info {
                display: contents;
            }
            .transform-title {
                order: 1;
                font-size: 25px;
                line-height: 1.22;
                text-align: center;
                margin-bottom: 20px;
                width: 100%;
            }
            .transform-visual {
                order: 2;
                width: 100%;
                min-height: 330px;
                height: 330px;
                margin-top: 8px;
                margin-bottom: 24px;
                --transform-marker-scale: 0.65;
            }
            .transform-visual .gps-physics-diagram svg {
                max-height: none;
                height: auto;
            }
            .transform-grid {
                order: 3;
                grid-template-columns: 1fr;
                gap: 12px;
                width: 100%;
            }
            .t-card {
                padding: 22px 18px;
                border-radius: 14px;
            }
            .page-main .section-transform::before {
                background: radial-gradient(circle 260px at 50% 28%, rgba(255, 52, 7, 0.26) 0%, rgba(246, 47, 3, 0.10) 36%, transparent 70%);
            }
        }

        .t-card {
            width: 100%;
            height: 100%;
            min-height: 200px;
            align-self: stretch;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 30px 26px;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
        }

        @media (max-width: 768px) {
            .t-card {
                padding: 24px 20px;
            }
        }

        .t-card:hover {
            background: rgba(255, 255, 255, 0.055);
            border-color: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }

        .t-card-title {
            font-size: 19px;
            font-weight: 500;
            line-height: 1.3;
            color: #ffffff;
            margin: 0 0 12px 0;
            letter-spacing: -0.015em;
        }

        .t-card-text {
            font-size: 14.5px;
            font-weight: 400;
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.52);
            margin: 0;
            letter-spacing: -0.005em;
            flex-grow: 1;
        }

        /* Экран 3 — Собственное производство и склад (1:1 карточки Mount Media #additional) */
        .section-additional {
            width: 100%;
            padding: 40px 0 80px;
            margin-top: 80px;
            position: relative;
            z-index: 10;
            background: transparent;
            box-sizing: border-box;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .section-additional {
                padding: 30px 0 50px;
                margin-top: 60px;
            }
        }

        @media (max-width: 768px) {
            .section-additional {
                padding: 20px 0 36px;
                margin-top: 48px;
            }
        }

        .additional-container {
            width: 100%;
            margin: 0 auto;
        }

        .additional-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            width: 100%;
            box-sizing: border-box;
        }

        @media (max-width: 960px) {
            .additional-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .box_ {
            min-height: 620px;
            text-align: center;
            border-radius: 20px;
            position: relative;
            z-index: 2;
            overflow: hidden;
            box-sizing: border-box;
            background: #0a0a0a;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .box_ .photo-layer {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 1;
            transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .box_:hover .photo-layer {
            transform: scale(1.04);
        }

        /* Затемнение для безупречной читаемости текста */
        .box_ .dark-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 8, 8, 0.76) 0%, rgba(8, 8, 8, 0.84) 50%, rgba(8, 8, 8, 0.90) 100%);
            z-index: 2;
            transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
            pointer-events: none;
        }

        /* Градиент при ховере с деликатной полупрозрачностью, чтобы фото просвечивало */
        .box_ .grad-overlay {
            position: absolute;
            inset: 0;
            z-index: 3;
            opacity: 0;
            transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
            pointer-events: none;
        }

        .box_:nth-child(1) .grad-overlay {
            background: linear-gradient(272deg, rgba(255, 33, 33, 0) -16.91%, rgba(255, 52, 7, 0.84) -0.51%, rgba(252, 150, 76, 0.80) 12.46%, rgba(252, 150, 76, 0.80) 22.5%, rgba(246, 47, 3, 0.84) 46.54%, rgba(246, 32, 3, 0.15) 71.84%, rgba(253, 124, 52, 0.82) 112.33%);
        }

        .box_:nth-child(2) .grad-overlay {
            background: linear-gradient(261deg, rgba(246, 32, 3, 0) -11.86%, rgba(252, 150, 76, 0.80) -5.96%, rgba(252, 150, 76, 0.80) 5.45%, rgba(246, 32, 3, 0.84) 30.99%, rgba(246, 32, 3, 0.15) 62.85%, rgba(246, 32, 3, 0.84) 101.39%, rgba(253, 124, 52, 0.82) 103.82%);
        }

        .box_:nth-child(3) .grad-overlay {
            background: linear-gradient(285deg, rgba(255, 50, 10, 0) -10%, rgba(255, 52, 7, 0.84) 5%, rgba(252, 150, 76, 0.80) 25%, rgba(246, 47, 3, 0.84) 55%, rgba(246, 32, 3, 0.15) 80%, rgba(253, 124, 52, 0.82) 115%);
        }

        .box_:nth-child(4) .grad-overlay {
            background: linear-gradient(250deg, rgba(246, 32, 3, 0) -15%, rgba(253, 124, 52, 0.82) 0%, rgba(252, 150, 76, 0.80) 18%, rgba(246, 32, 3, 0.84) 45%, rgba(246, 32, 3, 0.15) 75%, rgba(255, 52, 7, 0.84) 105%);
        }

        .box_:hover .dark-overlay {
            opacity: 0.28;
        }

        .box_:hover .grad-overlay {
            opacity: 0.86;
        }

        .box_ .bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 4;
            transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
            border-radius: 20px;
            pointer-events: none;
            background: transparent;
        }

        .box_ .box {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
            min-height: 620px;
            position: relative;
            z-index: 5;
            overflow: hidden;
            padding: 56px 40px;
            box-sizing: border-box;
        }

        @media (max-width: 768px) {
            .box_ {
                min-height: 480px;
            }
            .box_ .box {
                min-height: 480px;
                padding: 40px 24px;
            }
        }

        .box_ .t {
            height: 48px;
        }

        .box_ .cnt {
            transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .box_:hover .cnt {
            transform: translateY(-36px);
        }

        .box_ .cnt h2 {
            font-size: clamp(32px, 3.2vw, 54px);
            font-weight: 300;
            line-height: 1.1;
            letter-spacing: -0.03em;
            color: #ffffff;
            margin: 0 0 20px 0;
            text-align: center;
        }

        .box_ .cnt h2,
        .box_ .cnt h2 * {
            font-style: normal !important;
            font-weight: 300 !important;
            letter-spacing: -0.025em;
        }

        .box_ .cnt p {
            font-size: 16px;
            line-height: 1.6;
            color: #ffffff;
            opacity: 0.52;
            transition: opacity 0.4s ease;
            max-width: 480px;
            margin: 0 auto;
            letter-spacing: -0.01em;
        }

        .box_:hover .cnt p {
            opacity: 0.95;
        }

        .box_ .b {
            min-height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .box_ .b .burn-btn {
            transform: translateY(90px);
            opacity: 0;
            transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s ease;
            pointer-events: none;
        }

        .box_:hover .b .burn-btn {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        /* Экран 4: Интерактивный калькулятор по ГОСТ Р 55472-2019 */
        .section-calc {
            width: calc(100% + 96px);
            margin-left: -48px;
            margin-right: -48px;
            padding: 110px 48px 160px;
            margin-top: 0;
            position: relative;
            z-index: 10;
            box-sizing: border-box;
            scroll-margin-top: 90px;
            background: #0a0a0a;
            overflow: hidden;
            border-radius: 0;
        }

        .section-calc::before {
            content: '';
            position: absolute;
            inset: 0;
            background: 
                radial-gradient(ellipse 85% 55% at 50% 50%, rgba(255, 52, 7, 0.32) 0%, rgba(252, 150, 76, 0.18) 40%, transparent 78%),
                linear-gradient(180deg, #0a0a0a 0%, rgba(10, 10, 10, 0.1) 22%, rgba(30, 12, 6, 0.78) 50%, rgba(10, 10, 10, 0.1) 78%, #0a0a0a 100%);
            pointer-events: none;
            z-index: 0;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .section-calc {
                padding: 60px 48px 80px;
            }
        }

        @media (max-width: 768px) {
            .section-calc {
                width: calc(100% + 32px);
                margin-left: -16px;
                margin-right: -16px;
                padding: 36px 16px 44px;
                margin-top: 0;
            }
        }

        .calc-header {
            margin-bottom: 52px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .calc-title {
            font-size: clamp(34px, 3.8vw, 62px);
            font-weight: 300;
            line-height: 1.12;
            letter-spacing: -0.03em;
            color: #ffffff;
            margin: 0 0 16px 0;
            font-style: normal;
            text-align: center;
            max-width: 920px;
        }

        .calc-subtitle {
            font-size: clamp(16px, 1.25vw, 19px);
            font-weight: 400;
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.52);
            margin: 0 auto;
            max-width: 820px;
            letter-spacing: -0.01em;
            text-align: center;
        }

        .calc-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 28px;
            width: 100%;
            box-sizing: border-box;
            align-items: stretch;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 1080px) {
            .calc-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .calc-card {
            background: rgba(18, 18, 18, 0.88);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 44px;
            box-sizing: border-box;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            position: relative;
        }

        @media (max-width: 768px) {
            .calc-card {
                padding: 28px 20px;
            }
        }

        .calc-field-group {
            margin-bottom: 32px;
        }

        .calc-field-group:last-child {
            margin-bottom: 0;
        }

        .calc-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.02em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.45);
            margin-bottom: 12px;
        }

        .calc-input-row {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .calc-input-wrap {
            position: relative;
            flex: 1;
        }

        .calc-input::-webkit-inner-spin-button,
        .calc-input::-webkit-outer-spin-button,
        .calc-step-input::-webkit-inner-spin-button,
        .calc-step-input::-webkit-outer-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }

        .calc-input,
        .calc-step-input {
            -moz-appearance: textfield;
            appearance: textfield;
        }

        .calc-input {
            width: 100%;
            background: #151515;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            color: #ffffff;
            font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 22px;
            font-weight: 400;
            padding: 16px 90px 16px 20px;
            box-sizing: border-box;
            outline: none;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .calc-input:focus {
            border-color: rgba(255, 80, 20, 0.8);
            background: #181818;
        }

        .calc-unit {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 15px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.4);
            pointer-events: none;
        }

        .calc-presets {
            display: flex;
            gap: 8px;
            margin-top: 10px;
            flex-wrap: wrap;
        }

        .calc-preset-btn {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            color: rgba(255, 255, 255, 0.65);
            font-family: inherit;
            font-size: 13px;
            padding: 6px 14px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .calc-preset-btn:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
        }

        /* Выбор шага трассировки (без бейджей) */
        .calc-options-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        @media (max-width: 860px) {
            .calc-options-grid {
                grid-template-columns: 1fr;
            }
        }

        .calc-option {
            background: #151515;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 18px 20px;
            cursor: pointer;
            transition: border-color 0.25s ease, background 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 6px;
            user-select: none;
        }

        .calc-option.active {
            border-color: rgba(255, 80, 20, 0.9);
            background: rgba(255, 52, 7, 0.08);
        }

        .calc-option-title {
            font-size: 15px;
            font-weight: 500;
            color: #ffffff;
            line-height: 1.3;
        }

        .calc-option-desc {
            font-size: 13px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.4;
        }

        /* Сетка ключевых реперных точек */
        .calc-points-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        @media (max-width: 768px) {
            .calc-points-grid {
                grid-template-columns: 1fr;
            }
        }

        .calc-point-box {
            background: #151515;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 12px;
        }

        .calc-point-title {
            font-size: 13.5px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.35;
        }

        .calc-point-rule {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
        }

        .calc-stepper {
            display: flex;
            align-items: center;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            overflow: hidden;
            background: #111111;
        }

        .calc-step-btn {
            width: 36px;
            height: 36px;
            background: transparent;
            border: none;
            color: #ffffff;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }

        .calc-step-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .calc-step-input {
            width: 100%;
            border: none;
            background: transparent;
            color: #ffffff;
            font-family: inherit;
            font-size: 16px;
            font-weight: 500;
            text-align: center;
            outline: none;
        }

        .calc-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.5;
            margin-top: 20px;
        }

        /* Правая колонка — Спецификация и расчет */
        .calc-result-card {
            background: rgba(18, 18, 18, 0.88);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 44px;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 32px;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        @media (max-width: 768px) {
            .calc-result-card {
                padding: 28px 20px;
            }
        }

        .calc-res-top {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 28px;
        }

        .calc-res-head {
            font-size: 13.5px;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.45);
            margin-bottom: 8px;
        }

        .calc-res-qty-row {
            display: flex;
            align-items: baseline;
            gap: 12px;
            margin-bottom: 8px;
        }

        .calc-res-big-qty {
            font-size: clamp(52px, 5.2vw, 76px);
            font-weight: 300;
            line-height: 1;
            letter-spacing: -0.04em;
            background: linear-gradient(135deg, #ff3407 0%, #fc964c 45%, #fd7c34 80%, #ff3407 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
            display: inline-block;
        }

        .calc-res-unit {
            font-size: 24px;
            font-weight: 300;
            color: rgba(255, 255, 255, 0.5);
        }

        .calc-res-type {
            font-size: 14.5px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.4;
        }

        /* Детализация */
        .calc-breakdown {
            display: flex;
            flex-direction: column;
            gap: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 24px;
        }

        .calc-breakdown-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
        }

        .calc-breakdown-name {
            color: rgba(255, 255, 255, 0.52);
        }

        .calc-breakdown-val {
            color: #ffffff;
            font-weight: 500;
        }

        /* Логистика и бюджет */
        .calc-logistics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 24px;
        }

        .calc-log-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .calc-log-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.02em;
        }

        .calc-log-val {
            font-size: 17px;
            font-weight: 400;
            color: #ffffff;
        }

        .calc-price-row {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .calc-price-label {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.03em;
            color: rgba(255, 255, 255, 0.45);
        }

        .calc-price-val {
            font-size: clamp(26px, 2.4vw, 34px);
            font-weight: 300;
            color: #ffffff;
            letter-spacing: -0.02em;
        }

        .calc-price-sub {
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.4;
        }

        /* Кнопки действий */
        .calc-actions {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 8px;
        }

        .calc-actions .burn-btn {
            width: 100%;
            height: 52px;
            justify-content: center;
        }

        .calc-btn-secondary {
            width: 100%;
            height: 48px;
            border-radius: 12px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: #ffffff;
            font-family: inherit;
            font-size: 14.5px;
            font-weight: 400;
            cursor: pointer;
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .calc-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .calc-sample-link {
            text-align: center;
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.45);
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: color 0.2s ease;
            cursor: pointer;
        }

        .calc-sample-link:hover {
            color: #ffffff;
        }

        .hero-header {
            position: absolute;
            top: 90px;
            left: 0;
            width: 100%;
            text-align: center;
            padding: 0 24px;
            pointer-events: none;
            z-index: 10;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        @media (max-width: 768px) {
            .hero-header {
                top: 76px;
                padding: 0 16px;
            }
        }

        .hero-title {
            font-size: clamp(55px, 6.4vw, 95px);
            font-weight: 300;
            line-height: 1.03;
            letter-spacing: -0.03em;
            color: #ffffff;
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9), 0 2px 6px rgba(0, 0, 0, 0.6);
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: clamp(28px, 7.6vw, 44px);
                line-height: 1.08;
                letter-spacing: -0.025em;
            }
        }

        .title-line {
            display: flex;
            justify-content: center;
            gap: 0.25em;
            line-height: 1.03;
        }

        @media (max-width: 768px) {
            .title-line {
                gap: 0.18em;
                line-height: 1.08;
            }
        }

        .hero-subtitle {
            margin: 10px 0 0 0;
            max-width: 860px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.9), 0 2px 4px rgba(0, 0, 0, 0.6);
        }

        @media (max-width: 768px) {
            .hero-subtitle {
                margin-top: 14px;
                gap: 8px;
                max-width: 100%;
                padding: 0 8px;
            }
            .hero-subtitle .line-main {
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                align-items: center !important;
                gap: 0.28em !important;
            }
            .hero-subtitle .line-specs {
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                align-items: center !important;
                gap: 0.28em 0.5em !important;
            }
            .spec-dot-wrap {
                display: inline-flex !important;
            }
            .subtitle-line.line-main {
                font-size: 14.5px;
                line-height: 1.35;
                text-align: center;
            }
            .subtitle-line.line-specs {
                font-size: 13px;
                line-height: 1.45;
                text-align: center;
                gap: 0.28em 0.5em;
            }
        }

        .subtitle-line {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 0.28em;
            line-height: 1.35;
        }

        .sub-phrase {
            display: inline-flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 0.28em;
        }

        .subtitle-line.line-main {
            font-size: clamp(16px, 1.3vw, 20px);
            font-weight: 300;
            letter-spacing: -0.01em;
            color: #ffffff;
        }

        .subtitle-line.line-specs {
            font-size: clamp(14px, 1.1vw, 16px);
            font-weight: 400;
            letter-spacing: -0.01em;
            color: #ffffff;
        }

        .spec-dot {
            opacity: 0.4;
            padding: 0 0.15em;
        }

        .mask-wrap {
            display: inline-block;
            overflow: hidden;
            vertical-align: top;
            padding: 4px 8px 8px 8px;
            margin: -4px -8px -8px -8px;
        }

        .mask-word {
            display: inline-block;
            transform: translateY(120%);
            opacity: 0;
            will-change: transform, opacity;
        }

        :root {
            --w: #ffffff;
            --g00: rgba(255, 255, 255, 0);
            --g06: rgba(255, 255, 255, 0.06);
            --g16: rgba(255, 255, 255, 0.16);
            --g32: rgba(255, 255, 255, 0.32);
            --tr: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }

        #canvas-3d {
            width: 100%;
            height: 1350px;
            position: absolute;
            top: 0;
            left: 0;
            display: block;
            cursor: grab;
            z-index: 6;
            pointer-events: none;
        }

        #canvas-3d:active {
            cursor: grabbing;
        }

        @media (max-width: 1080px) {
            #canvas-3d {
                height: 1100px;
            }
        }

        /* Mount Media Reference Bottom Navigation */
        #nav {
            will-change: transform, opacity;
            position: fixed;
            bottom: 50px;
            left: 0;
            right: 0;
            margin: 0 auto;
            z-index: 999;
            display: flex;
            justify-content: center;
            pointer-events: auto;
            touch-action: manipulation;
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.35s ease, transform 0.35s ease;
        }

        /* Изолированное правило для планшетов (<= 1080px) */
        @media (min-width: 769px) and (max-width: 1080px) {
            #nav {
                position: absolute;
                bottom: 24px;
                left: 0;
                right: 0;
                margin: 0 auto;
                z-index: 50;
                pointer-events: auto;
            }
        }

        @media (max-width: 768px) {
            #nav {
                position: absolute;
                bottom: 16px;
                left: 0;
                right: 0;
                margin: 0 auto;
                padding: 0 10px;
                box-sizing: border-box;
                width: 100%;
                max-width: 440px;
                z-index: 50;
                pointer-events: auto;
            }
        }

        /* ==========================================================================
           ИЗОЛИРОВАННАЯ ПОСАДКА HERO И ПАНЕЛИ ПОД ЦЕЛЕВЫЕ РАЗРЕШЕНИЯ
           ========================================================================== */

        /* 1. iPad Pro 13 Portrait (1032 x 1376) */
        @media screen and (width: 1032px) and (height: 1376px) {
            #hero-viewport {
                height: 820px;
                min-height: 820px;
            }
            #canvas-3d {
                height: 1100px;
            }
            #nav {
                bottom: 24px;
            }
            .section-weare {
                padding-top: 40px;
            }
        }

        /* 2. iPad Mini Landscape (1024 x 768) */
        @media screen and (width: 1024px) and (height: 768px) {
            #hero-viewport {
                height: 660px;
                min-height: 660px;
            }
            #canvas-3d {
                height: 980px;
            }
            #nav {
                bottom: 18px;
            }
            .section-weare {
                padding-top: 40px;
            }
        }

        /* 3. iPad Mini Portrait (768 x 1024) */
        @media screen and (width: 768px) and (height: 1024px) {
            #hero-viewport {
                height: 720px;
                min-height: 720px;
            }
            .hero-header {
                top: 60px !important;
                padding: 0 24px !important;
            }
            .hero-title {
                font-size: 38px !important;
                line-height: 1.1 !important;
            }
            .hero-subtitle {
                margin-top: 14px !important;
                max-width: 680px !important;
                margin-left: auto !important;
                margin-right: auto !important;
            }
            .hero-subtitle .line-main {
                font-size: 15px !important;
                line-height: 1.35 !important;
                display: flex !important;
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 0.28em !important;
            }
            .hero-subtitle .line-specs {
                font-size: 13.5px !important;
                line-height: 1.4 !important;
                margin-top: 8px !important;
                display: flex !important;
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 0.28em 0.5em !important;
            }
            #canvas-3d {
                height: 1050px;
            }
            #nav {
                bottom: 18px;
            }
            .section-weare {
                padding-top: 40px;
            }
        }

        /* 4. Смартфоны Portrait (<= 767px) - универсально для всех моделей (Huawei, iPhone, Samsung и др.) */
        @media screen and (max-width: 767px) {
            #hero-viewport {
                height: 650px;
                min-height: 650px;
            }
            .hero-header {
                top: 72px !important;
                padding: 0 16px !important;
            }
            .hero-title {
                font-size: 26px !important;
                line-height: 1.18 !important;
            }
            .hero-title .title-line {
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 0.2em !important;
            }
            .hero-subtitle {
                margin-top: 12px !important;
            }
            .hero-subtitle .line-main {
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 0.28em !important;
                font-size: 13.5px !important;
                line-height: 1.35 !important;
                max-width: 380px !important;
                margin-left: auto !important;
                margin-right: auto !important;
            }
            .hero-subtitle .line-main .sub-phrase {
                display: inline-flex !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 0.28em !important;
            }
            .hero-subtitle .line-specs {
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 4px 6px !important;
                margin-top: 6px !important;
                font-size: 11px !important;
            }
            .hero-subtitle .line-specs .spec-dot-wrap {
                display: inline-flex !important;
            }
            #canvas-3d {
                height: 650px;
            }
            #nav {
                bottom: 16px;
                width: calc(100% - 24px);
                max-width: 410px;
            }
            #nav .menu {
                justify-content: space-between;
                padding: 3px 6px;
            }
            #nav .menu a {
                padding: 0 10px;
                font-size: 12px;
            }
            #nav .menu a#btn-calc-batch {
                padding: 0 12px;
                font-size: 12px;
            }
            .section-weare {
                padding-top: 40px;
            }
        }

        /* 5. iPhone 16 Pro Max Landscape (956 x 440) и смартфоны в альбоме */
        @media screen and (max-height: 500px) and (orientation: landscape), screen and (width: 956px) and (height: 440px) {
            .stage-container,
            .footer-inner {
                padding: 0 24px !important;
            }
            #hero-viewport {
                height: 440px;
                min-height: 440px;
            }
            .hero-header {
                top: 18px !important;
            }
            .hero-title {
                font-size: 26px !important;
                line-height: 1.08 !important;
                letter-spacing: -0.025em;
            }
            .hero-subtitle {
                display: flex !important;
                margin-top: 6px !important;
            }
            .hero-subtitle .subtitle-line.line-main {
                font-size: 13px !important;
            }
            .hero-subtitle .subtitle-line.line-specs {
                font-size: 11.5px !important;
            }
            #canvas-3d {
                height: 600px;
            }
            #nav {
                bottom: 10px !important;
            }
            .section-weare {
                padding-top: 40px !important;
            }
        }

        #nav .menu {
            pointer-events: auto;
            touch-action: manipulation;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 56px;
            padding: 0 4px;
            margin: 0 2px;
            background: rgba(18, 18, 20, 0.82);
            -webkit-backdrop-filter: blur(24px);
            backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border-radius: 12px;
            position: relative;
            user-select: none;
        }

        @media (max-width: 768px) {
            #nav .menu {
                height: 44px;
                padding: 0 2px;
                width: 100%;
                max-width: 420px;
                justify-content: space-between;
            }
        }

        .grad-stroke {
            border-radius: 12px;
            position: relative;
        }

        .grad-stroke:before {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            z-index: 10;
            width: 20px;
            display: block;
            content: "";
            border: 1px solid var(--g16);
            border-right: none;
            border-radius: 12px 0 0 12px;
            pointer-events: none;
        }

        .grad-stroke:after {
            position: absolute;
            top: 0;
            bottom: 0;
            right: 0;
            z-index: 10;
            width: 20px;
            display: block;
            content: "";
            border: 1px solid var(--g16);
            border-left: none;
            border-radius: 0 12px 12px 0;
            pointer-events: none;
        }

        .grad-stroke > .gs:before {
            background: linear-gradient(90deg, var(--g16) 20%, var(--g00) 50%, var(--g00) 70%, var(--g16) 100%);
            position: absolute;
            top: 0;
            left: 21px;
            right: 21px;
            z-index: 10;
            height: 1px;
            display: block;
            content: "";
            pointer-events: none;
        }

        .grad-stroke > .gs:after {
            background: linear-gradient(90deg, var(--g16) 0, var(--g00) 30%, var(--g00) 50%, var(--g16) 80%);
            position: absolute;
            bottom: 0;
            left: 21px;
            right: 21px;
            z-index: 10;
            height: 1px;
            display: block;
            content: "";
            pointer-events: none;
        }

        #nav .menu1 a + a:not(.btn):before {
            position: absolute;
            top: 13px;
            left: -1px;
            width: 1px;
            height: 24px;
            background: linear-gradient(180deg, var(--g00) 0%, var(--g16) 40%, var(--g16) 60%, var(--g00) 100%);
            display: block;
            content: "";
        }

        #nav .menu a {
            height: 48px;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            padding: 0 24px;
            color: var(--w);
            position: relative;
            text-decoration: none;
            font-size: 15px;
            font-weight: 400;
            cursor: pointer;
            transition: var(--tr);
        }

        .nav-txt-mobile {
            display: none;
        }

        .nav-txt-desktop {
            display: inline;
        }

        @media (max-width: 768px) {
            .nav-txt-desktop {
                display: none !important;
            }
            .nav-txt-mobile {
                display: inline !important;
            }
            #nav .menu a {
                height: 38px;
                padding: 0 8px;
                font-size: 12px;
                flex: 1 1 auto;
                white-space: nowrap;
            }
            #nav .menu a#btn-calc-batch {
                padding: 0 10px;
                font-size: 12px;
                flex: 1 1 auto;
            }
            #nav .menu1 a + a:not(.btn):before {
                height: 16px;
                top: 11px;
            }
        }

        @media (max-width: 480px) {
            #nav .menu a {
                padding: 0 7px;
                font-size: 11.5px;
            }
            #nav .menu a#btn-calc-batch {
                padding: 0 8px;
                font-size: 11.5px;
            }
        }

        #nav .menu a + a {
            margin: 0 0 0 1px;
        }

        #nav .menu a.-a:not(.btn) {
            opacity: 0.48;
        }

        #nav .menu a.-a:not(.btn):hover {
            opacity: 0.85;
        }

        .hover {
            display: block;
            overflow: hidden;
            height: 22px;
            line-height: 22px;
            position: relative;
            z-index: 5;
        }

        .hover span {
            display: block;
            transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }

        @media (pointer: fine) {
            #nav .menu a:hover .hover span {
                transform: translateY(-100%);
            }
        }

        .btn {
            font-size: 15px;
            color: var(--w);
            height: 48px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 0 28px;
            transition: var(--tr);
            overflow: hidden;
            text-decoration: none;
            cursor: pointer;
            border: none;
            background: transparent;
            font-family: inherit;
        }

        .btn .bbg {
            background: var(--w);
            display: block;
            position: absolute;
            top: 0;
            left: 0;
            z-index: 2;
            width: 100%;
            height: 100%;
            opacity: 0.12;
            transition: var(--tr);
            border-radius: 12px;
        }

        .btn.-g32 .bbg {
            opacity: 0.32;
        }

        .btn:hover .bbg {
            opacity: 0.22;
        }

        .btn.-g32:hover .bbg {
            opacity: 0.45;
        }

        #btn-calc-batch:hover .bbg {
            background: linear-gradient(135deg, #ff3407 0%, #fc964c 45%, #f62f03 80%, #fd7c34 100%);
            opacity: 0.55;
        }

        /* ==========================================================================
           Экран 5: Материалы для проектирования и включения в ПСД (По референсу mount-media.com)
           ========================================================================== */
        :root {
            --b1: #0f0f0f;
            --grad: linear-gradient(272deg, rgba(255, 33, 33, 0) -16.91%, #ff3407 -0.51%, #fc964c 12.46%, #fc964c 22.5%, #f62f03 46.54%, rgba(246, 32, 3, 0) 71.84%, #fd7c34 112.33%);
            --tr: 0.4s ease-out;
        }

        .psd-section {
            width: 100%;
            padding: 80px 0 120px;
            box-sizing: border-box;
            position: relative;
            z-index: 1;
        }



        /* Изолированные сбалансированные отступы для страницы Проектировщикам */
        .page-designers .section-weare {
            padding-top: 130px;
            padding-bottom: 70px;
        }

        .page-designers .psd-section {
            padding: 80px 0 80px;
        }

        .page-designers .section-calc {
            padding-top: 60px;
            padding-bottom: 100px;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .page-designers .section-weare {
                padding-top: 100px;
                padding-bottom: 55px;
            }
            .page-designers .psd-section {
                padding: 60px 0 60px;
            }
            .page-designers .section-calc {
                padding-top: 48px;
                padding-bottom: 75px;
            }
        }

        @media (max-width: 768px) {
            .page-designers .section-weare {
                padding-top: 75px;
                padding-bottom: 40px;
            }
            .page-designers .psd-section {
                padding: 45px 0 45px;
            }
            .page-designers .section-calc {
                padding-top: 35px;
                padding-bottom: 50px;
            }
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .psd-section {
                padding: 50px 0 70px;
            }
        }

        @media (max-width: 768px) {
            .psd-section {
                padding: 36px 0 44px;
            }
            .psd-header {
                margin-bottom: 28px;
            }
        }

        .psd-header {
            text-align: center;
            margin-bottom: 48px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .psd-switch-wrap,
        .calc-switch-wrap {
            margin-top: 28px;
            display: flex;
            justify-content: center;
            width: 100%;
        }

        .psd-switch-btns {
            display: inline-flex;
            gap: 12px;
            align-items: center;
            max-width: 100%;
        }

        .psd-switch-btn.burn-btn,
        .calc-switch-btn.burn-btn {
            height: 48px;
            padding: 0 26px;
            font-size: 14.5px;
            font-weight: 500;
            border-radius: 12px;
            cursor: pointer;
        }

        /* Неактивное состояние фирменной кнопки в переключателе */
        .psd-switch-btn.burn-btn:not(.is-active),
        .calc-switch-btn.burn-btn:not(.is-active) {
            color: rgba(255, 255, 255, 0.65);
        }

        .psd-switch-btn.burn-btn:not(.is-active) .bbg,
        .calc-switch-btn.burn-btn:not(.is-active) .bbg {
            opacity: 0.10;
        }

        .psd-switch-btn.burn-btn:not(.is-active) .grad-layer,
        .calc-switch-btn.burn-btn:not(.is-active) .grad-layer {
            opacity: 0;
        }

        .psd-switch-btn.burn-btn:not(.is-active):hover,
        .calc-switch-btn.burn-btn:not(.is-active):hover {
            color: #ffffff;
        }

        .psd-switch-btn.burn-btn:not(.is-active):hover .bbg,
        .calc-switch-btn.burn-btn:not(.is-active):hover .bbg {
            opacity: 0.18;
        }

        .psd-switch-btn.burn-btn:not(.is-active):hover .grad-layer,
        .calc-switch-btn.burn-btn:not(.is-active):hover .grad-layer {
            opacity: 0.40;
        }

        /* Активное состояние фирменной кнопки в переключателе */
        .psd-switch-btn.burn-btn.is-active,
        .calc-switch-btn.burn-btn.is-active {
            color: #ffffff;
        }

        .psd-switch-btn.burn-btn.is-active .grad-layer,
        .calc-switch-btn.burn-btn.is-active .grad-layer {
            opacity: 1;
        }

        .psd-switch-btn.burn-btn.is-active .bbg,
        .calc-switch-btn.burn-btn.is-active .bbg {
            opacity: 0.25;
        }

        .trench-comm-item {
            display: none;
        }

        .trench-scheme-card.trench-svyaz .trench-gas-item {
            display: none !important;
        }

        .trench-scheme-card.trench-svyaz .trench-comm-item {
            display: inline !important;
        }

        @media (max-width: 640px) {
            .psd-switch-btns {
                flex-direction: column;
                width: 100%;
                gap: 8px;
            }
            .psd-switch-btn.burn-btn,
            .calc-switch-btn.burn-btn {
                width: 100%;
                padding: 0 16px;
                font-size: 13.5px;
            }
        }

        /* ==========================================================================
           Интерактивная векторная схема укладки маркера в траншею (ГОСТ Р 55472-2019)
           ========================================================================== */
        .trench-scheme-card {
            width: 100%;
            background: #111111;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 40px;
            margin-bottom: 40px;
            box-sizing: border-box;
            position: relative;
        }

        .trench-grid {
            display: grid;
            grid-template-columns: 1.35fr 1fr;
            gap: 40px;
            align-items: center;
        }

        @media (max-width: 1080px) {
            .trench-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .trench-scheme-card {
                padding: 24px 16px;
                border-radius: 16px;
                margin-bottom: 28px;
            }
        }

        .trench-svg-col {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
        }

        .trench-svg {
            width: 100%;
            height: auto;
            max-width: 660px;
            display: block;
            overflow: visible;
            user-select: none;
        }

        .trench-layer {
            cursor: pointer;
            transition: filter 0.3s ease, stroke 0.3s ease, opacity 0.3s ease;
        }

        .trench-layer:hover,
        .trench-layer.is-active {
            filter: brightness(1.3);
        }

        #trench-pipe:hover circle,
        #trench-pipe.is-active circle {
            stroke: #ffffff;
        }

        #trench-tape rect {
            stroke: none !important;
        }

        #trench-tape:hover rect,
        #trench-tape.is-active rect {
            stroke: none !important;
            fill: #ffdd00;
            filter: drop-shadow(0 0 6px rgba(255, 208, 0, 0.45));
        }

        .trench-svyaz #trench-tape:hover rect,
        .trench-svyaz #trench-tape.is-active rect {
            fill: #ff7700 !important;
            filter: drop-shadow(0 0 8px rgba(249, 115, 22, 0.65)) !important;
        }

        #trench-sand:hover,
        #trench-sand.is-active {
            stroke: rgba(255, 255, 255, 0.5);
            fill: #1c1c1c;
        }

        #trench-bed:hover,
        #trench-bed.is-active {
            stroke: rgba(255, 255, 255, 0.5);
            fill: #222222;
        }

        /* Анимация импульсного сигнала маркера */
        #trench-signal-cone,
        #trench-signal-cone-comm {
            transition: opacity 0.45s ease;
        }

        #trench-signal-waves,
        #trench-signal-waves-comm {
            transition: opacity 0.45s ease, stroke-dashoffset 2s linear;
        }

        .trench-scheme-card.is-marker-active #trench-signal-cone,
        .trench-scheme-card.is-marker-active #trench-signal-cone-comm {
            opacity: 1;
        }

        .trench-scheme-card.is-marker-active #trench-signal-waves,
        .trench-scheme-card.is-marker-active #trench-signal-waves-comm {
            opacity: 0.85;
            animation: signalPulse 2.4s infinite linear;
        }

        @keyframes signalPulse {
            0% {
                stroke-dashoffset: 40;
                opacity: 0.3;
            }
            50% {
                opacity: 0.9;
            }
            100% {
                stroke-dashoffset: 0;
                opacity: 0.3;
            }
        }

        /* Правая колонка описания слоя */
        .trench-info-col {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .trench-info-card {
            background: transparent;
            border: none;
            border-radius: 0;
            padding: 0 0 10px 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .trench-info-tag {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            font-weight: 500;
        }

        .trench-info-title {
            font-size: 21px;
            font-weight: 400;
            color: #ffffff;
            margin: 4px 0 0 0;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .trench-info-desc {
            font-size: 14.5px;
            font-weight: 400;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.72);
            margin: 0;
            min-height: 80px;
        }

        .trench-info-specs {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
        }

        @media (max-width: 600px) {
            .trench-info-specs {
                grid-template-columns: 1fr;
                gap: 8px;
            }
        }

        .trench-spec-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .trench-spec-label {
            font-size: 11px;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.02em;
        }

        .trench-spec-val {
            font-size: 14px;
            font-weight: 500;
            color: #ffffff;
        }

        /* Навигация по слоям: строго в 1 монолитный ряд из 5 колонок */
        .trench-layers-nav {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 8px;
            width: 100%;
        }

        .trench-nav-btn {
            background: #171717;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            border-radius: 10px;
            padding: 10px 4px;
            font-size: 12.5px;
            font-weight: 400;
            font-family: inherit;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .trench-nav-btn:hover {
            background: #222222;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.22);
        }

        .trench-nav-btn.is-active {
            background: rgba(255, 80, 20, 0.15);
            color: #ffffff;
            border-color: rgba(255, 80, 20, 0.55);
        }

        @media (max-width: 900px) {
            .trench-layers-nav {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 600px) {
            .trench-layers-nav {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .list_1 {
            padding: 0 0 24px;
            width: 100%;
        }

        .list_1 .li {
            background: var(--grad);
            padding: 44px 24px;
            margin: 0 0 16px;
            text-align: center;
            border-radius: 18px;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            transition: var(--tr);
        }

        .list_1 .li > h3,
        .list_1 .li > p,
        .list_1 .li > .psd-actions {
            position: relative;
            z-index: 5;
        }

        .list_1 .li > h3.h2 {
            font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: clamp(24px, 3.2vw, 48px);
            font-weight: 300;
            line-height: 1.12;
            letter-spacing: -0.02em;
            color: #ffffff;
            margin: 0;
            transition: var(--tr);
        }

        .list_1 .li p {
            padding: 0;
            color: #ffffff;
            max-width: 660px;
            width: 100%;
            margin: auto;
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transform: translateY(40px);
            transition: var(--tr);
            font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 16px;
            font-weight: 400;
            line-height: 1.55;
            letter-spacing: 0;
        }

        .list_1 .li .psd-actions {
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transform: translateY(30px);
            transition: var(--tr);
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 0;
        }

        .list_1 .bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1;
            background: var(--b1);
            transition: var(--tr);
            border-radius: 18px;
        }

        /* Hover и активное состояние -a: плашка краснеет и плавно раскрывается */
        .list_1 .li:hover p,
        .list_1 .li.-a p {
            padding: 18px 0 0;
            max-height: 320px;
            opacity: 1;
            transform: translateY(0);
        }

        .list_1 .li:hover .psd-actions,
        .list_1 .li.-a .psd-actions {
            padding: 24px 0 0;
            max-height: 240px;
            opacity: 1;
            transform: translateY(0);
        }

        .list_1 .li:hover .bg,
        .list_1 .li.-a .bg {
            opacity: 0;
        }

        /* При наведении на любой пункт — соседний активный (-a) автоматически закрывается */
        .list_1:has(.li:hover) .li.-a:not(:hover) p {
            padding: 0;
            max-height: 0;
            opacity: 0;
            transform: translateY(40px);
        }

        .list_1:has(.li:hover) .li.-a:not(:hover) .psd-actions {
            padding: 0;
            max-height: 0;
            opacity: 0;
            transform: translateY(30px);
        }

        .list_1:has(.li:hover) .li.-a:not(:hover) .bg {
            opacity: 1;
        }

        @media (max-width: 767px) {
            .list_1 {
                padding: 0 0 40px;
            }
            .list_1 .li {
                padding: 28px 20px 32px;
                margin: 0 0 10px;
                text-align: left;
                border-radius: 14px;
            }
            .list_1 .li .bg {
                border-radius: 14px;
            }
            .list_1 .li > h3.h2 {
                font-size: 22px;
                line-height: 1.2;
            }
            .list_1 .li p {
                text-align: left;
                max-width: 100%;
            }
            .list_1 .li .psd-actions {
                justify-content: center !important;
                align-items: center !important;
                gap: 12px;
                width: 100%;
            }
            .list_1 .li:hover .psd-actions,
            .list_1 .li.-a .psd-actions {
                padding: 20px 0 6px;
                max-height: 240px;
            }
        }

        /* ==========================================================================
           Экран 6: Сравнение технологий маркировки газопроводов (Apple Compare Grid)
           ========================================================================== */
        .compare-section {
            width: 100%;
            padding: 40px 0 120px;
            box-sizing: border-box;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .compare-section {
                padding: 30px 0 70px;
            }
        }

        @media (max-width: 768px) {
            .compare-section {
                padding: 24px 0 44px;
            }
            .compare-header {
                margin-bottom: 28px;
            }
        }

        .compare-header {
            text-align: center;
            margin-bottom: 48px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .compare-grid-wrap {
            width: 100%;
            background: #111111;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            overflow: hidden;
            box-sizing: border-box;
        }

        .compare-row {
            display: grid;
            grid-template-columns: 1.15fr 1fr 1fr 1.35fr;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.25s ease;
        }

        .compare-row:last-child {
            border-bottom: none;
        }

        .compare-row:not(.compare-head-row):hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .compare-head-row {
            background: #151515;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 13.5px;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.03em;
            color: rgba(255, 255, 255, 0.5);
        }

        .compare-cell {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
            box-sizing: border-box;
        }

        /* Выделение колонки BURN */
        .col-burn {
            background: rgba(255, 52, 7, 0.04);
            border-left: 1px solid rgba(255, 52, 7, 0.15);
            border-right: 1px solid rgba(255, 52, 7, 0.15);
        }

        .compare-head-row .col-burn {
            color: #ffffff;
            font-weight: 600;
            background: rgba(255, 52, 7, 0.09);
            border-left: 1px solid rgba(255, 52, 7, 0.22);
            border-right: 1px solid rgba(255, 52, 7, 0.22);
        }

        .col-param {
            font-size: 15px;
            font-weight: 500;
            color: #ffffff;
            line-height: 1.35;
        }

        .compare-val-muted {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
        }

        .compare-val-burn {
            font-size: 15.5px;
            font-weight: 600;
            color: #ffffff;
        }

        .compare-note {
            font-size: 13px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.42);
            line-height: 1.45;
        }

        .col-burn .compare-note {
            color: rgba(255, 255, 255, 0.55);
        }

        @media (max-width: 1024px) {
            .compare-grid-wrap {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .compare-row {
                min-width: 820px;
            }
            .compare-cell {
                padding: 18px 20px;
            }
        }

        /* ==========================================================================
           Экран 7: Гарантированная совместимость с парком маркероискателей
           (Колода карточек по референсу Mount Media #testimonials)
           ========================================================================== */
        .section-locators {
            width: 100%;
            padding: 90px 0 60px;
            box-sizing: border-box;
            position: relative;
            z-index: 1;
            overflow: hidden;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .section-locators {
                padding: 50px 0 40px;
            }
        }

        @media (max-width: 768px) {
            .section-locators {
                padding: 36px 0 28px;
            }
            .locators-header {
                margin-bottom: 28px;
            }
            .locators-cards-zone {
                padding: 16px 0 24px;
            }
        }

        .locators-header {
            text-align: center;
            margin-bottom: 56px;
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .locators-header .calc-title {
            max-width: 1150px;
        }

        .locators-cards-zone {
            width: 100%;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 40px 0 60px;
        }

        .locators-cards-zone .cards {
            width: 540px;
            max-width: 100%;
            position: relative;
            margin: auto;
        }

        @media (max-width: 600px) {
            .locators-cards-zone .cards {
                width: 100%;
                max-width: 100%;
            }
        }

        /* Фоновая бегущая строка марок и брендов сзади карточки */
        .locators-cards-zone .logos_ {
            width: 100vw;
            height: 60px;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }

        .locators-cards-zone .logos .swiper-wrapper {
            transition-timing-function: linear !important;
        }

        .locators-cards-zone .logos .swiper-slide {
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            width: auto !important;
            padding: 0 40px;
        }

        .ticker-brand {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.1em;
            color: rgba(255, 255, 255, 0.11);
            white-space: nowrap;
            user-select: none;
        }

        /* Главная передняя карточка (Mount Media .card-w) */
        .locators-cards-zone .cards .card-w {
            padding: 34px;
            width: 100%;
            position: relative;
            z-index: 2;
            background: #0a0a0a;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85);
            box-sizing: border-box;
        }

        @media (max-width: 600px) {
            .locators-cards-zone .cards .card-w {
                padding: 24px 20px;
            }
        }

        /* Задние повернутые карточки колоды (Mount Media .card-bg) */
        .locators-cards-zone .cards .card-bg {
            width: 100%;
            height: 100%;
            position: absolute;
            top: 0;
            left: 0;
            z-index: 1;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            pointer-events: none;
        }

        .locators-cards-zone .cards .card-bg2 {
            background: #0f0f0f;
            transform: rotate(5deg) translateX(7%);
        }

        .locators-cards-zone .cards .card-bg3 {
            background: var(--grad), #0a0a0a;
            transform: rotate(-5deg) translateX(-7%);
            opacity: 0.95;
            box-shadow: 0 16px 40px rgba(220, 50, 10, 0.18);
        }

        @media (max-width: 600px) {
            .locators-cards-zone .cards .card-bg2 {
                transform: rotate(3deg) translateX(4%);
            }
            .locators-cards-zone .cards .card-bg3 {
                transform: rotate(-3deg) translateX(-4%);
            }
        }

        /* Содержимое слайдера внутри карточки */
        .locators-cards-zone .tests {
            width: 100%;
            overflow: hidden;
            position: relative;
        }

        .locator-card-head {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        .locator-photo-box {
            width: 88px;
            height: 88px;
            background: #141414;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            flex-shrink: 0;
        }

        .locator-img {
            max-width: 85%;
            max-height: 85%;
            object-fit: contain;
            display: block;
        }

        .locator-meta {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .locator-brand {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .locator-model {
            font-size: 20px;
            font-weight: 500;
            color: #ffffff;
            margin: 0;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .locator-frequency {
            font-size: 13px;
            color: #f59e0b;
            font-weight: 500;
        }

        .locators-cards-zone .txt {
            font-size: 14.5px;
            font-weight: 400;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.78);
            margin: 0 0 20px 0;
            min-height: 72px;
        }

        .locators-cards-zone .person {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.45);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 14px;
        }

        .locators-cards-zone .person span:first-child {
            color: #ffffff;
            font-weight: 500;
        }

        /* Индикатор автоплея (Mount Media .autoplay-progress) */
        .locators-cards-zone .autoplay-progress {
            border-radius: 28px;
            height: 2px;
            position: relative;
            margin: 24px 0 0;
            background: rgba(255, 255, 255, 0.12);
            overflow: hidden;
        }

        .locators-cards-zone .autoplay-progress .progress {
            height: 100%;
            border-radius: inherit;
            width: var(--progress, 0%);
            position: absolute;
            z-index: 10;
            left: 0;
            bottom: 0;
            will-change: width;
            background: linear-gradient(272deg, #ff3407 -0.51%, #fc964c 12.46%, #fc964c 22.5%, #f62f03 46.54%, #fd7c34 112.33%);
            transition: width 0.1s linear;
        }

        /* Пагинация */
        .locators-cards-zone .swiper-pagination {
            position: static;
            margin-top: 18px;
            display: flex;
            justify-content: center;
            gap: 8px;
        }

        .locators-cards-zone .swiper-pagination-bullet {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.22);
            opacity: 1;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .locators-cards-zone .swiper-pagination-bullet-active {
            background: #ff5014;
            width: 24px;
            border-radius: 4px;
        }

        /* ==========================================================================
           Экран 8: Документация завода (заглушки)
           ========================================================================== */
        .section-docs {
            padding: 80px 0 60px;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 769px) and (max-width: 1080px) {
            .section-docs {
                padding: 50px 0 50px;
            }
        }

        @media (max-width: 768px) {
            .section-docs {
                padding: 36px 0 36px;
            }
            .docs-header {
                margin-bottom: 28px;
            }
        }

        .docs-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .docs-header .calc-title {
            margin: 0 auto 16px;
        }

        .docs-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            width: 100%;
            margin: 0 auto;
        }

        .docs-grid-5 {
            grid-template-columns: repeat(5, 1fr);
        }

        .doc-card {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 16px;
            padding: 30px 22px 26px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            position: relative;
            min-height: 330px;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .doc-card:hover {
            transform: translateY(-4px);
        }

        .doc-card-body {
            position: relative;
            z-index: 2;
        }

        .doc-type {
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #ff5014;
            margin-bottom: 12px;
        }

        .doc-title {
            font-size: 17px;
            font-weight: 500;
            line-height: 1.35;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .doc-desc {
            font-size: 13px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.52);
            margin-bottom: 24px;
        }

        .doc-btn {
            margin-top: auto;
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .doc-btn .hover {
            height: 18px;
            line-height: 18px;
            overflow: hidden;
            display: inline-block;
        }

        .doc-btn .hover > span {
            font-size: 13px;
            height: 18px;
            line-height: 18px;
            letter-spacing: 0.01em;
            white-space: nowrap;
            display: block;
        }

        @media (max-width: 1199px) and (min-width: 820px) {
            .docs-grid,
            .docs-grid-5 {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
        }

        @media (max-width: 819px) and (min-width: 580px) {
            .docs-grid,
            .docs-grid-5 {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }

        @media (max-width: 579px) {
            .docs-grid,
            .docs-grid-5 {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .doc-card {
                padding: 20px 16px 18px;
                min-height: auto;
            }
            .doc-title {
                min-height: auto;
            }
        }

        /* ==========================================================================
           Форма заказа и Футер по референсу Mount Media (#footer)
           ========================================================================== */
        #footer {
            width: 100vw;
            margin-left: calc(-50vw + 50%);
            margin-right: calc(-50vw + 50%);
            margin-top: 60px;
            margin-bottom: 0;
            padding: 80px 0 0;
            position: relative;
            z-index: 10;
            background: radial-gradient(ellipse 90% 100% at 50% 100%, rgba(255, 52, 7, 0.45) 0%, rgba(246, 47, 3, 0.25) 35%, rgba(255, 33, 33, 0.08) 65%, transparent 100%);
            overflow: hidden;
        }

        .footer-inner {
            width: 100%;
            padding: 0 48px;
            box-sizing: border-box;
            position: relative;
            z-index: 2;
        }

        #footer .form_ {
            position: relative;
            z-index: 2;
            margin-bottom: 60px;
        }

        #footer .form-header {
            text-align: center;
            margin-bottom: 48px;
            position: relative;
            z-index: 2;
        }

        #footer .form-title {
            font-size: clamp(34px, 3.8vw, 62px);
            font-weight: 300;
            line-height: 1.12;
            letter-spacing: -0.03em;
            color: #ffffff;
            margin: 0 0 16px;
        }

        #footer .form-subtitle {
            font-size: clamp(16px, 1.25vw, 19px);
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.52);
            margin: 0 auto;
            max-width: 820px;
        }

        #footer .form-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            position: relative;
            z-index: 2;
            margin-bottom: 32px;
        }

        #footer .form_ .message_,
        #footer .form_ .agree_,
        #footer .form_ .btn_ {
            grid-column: 1 / span 3;
        }

        #footer .form_ input,
        #footer .form_ select,
        #footer .form_ textarea {
            background: rgba(255, 255, 255, 0.03);
            -webkit-backdrop-filter: blur(28px);
            backdrop-filter: blur(28px);
            height: 56px;
            border-radius: 12px;
            width: 100%;
            padding: 16px 20px;
            font: 400 15px/1.3 'Manrope', sans-serif;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.08);
            outline: none;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        #footer .form_ input:focus,
        #footer .form_ select:focus,
        #footer .form_ textarea:focus {
            border-color: rgba(255, 80, 20, 0.6);
            background: rgba(255, 255, 255, 0.05);
        }

        #footer .form_ input::placeholder,
        #footer .form_ textarea::placeholder {
            color: rgba(255, 255, 255, 0.36);
        }

        #footer .form_ select {
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M7 10L12 15L17 10' stroke='white' stroke-opacity='0.48' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") calc(100% - 16px) center/20px 20px no-repeat, rgba(255, 255, 255, 0.03);
            cursor: pointer;
        }

        #footer .form_ select option {
            background: #141414;
            color: #ffffff;
            padding: 10px;
        }

        #footer .form_ textarea {
            height: 120px;
            resize: none;
        }

        #footer .agree_ {
            margin: 8px 0 16px;
        }

        #footer .agree_ label {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.52);
            cursor: pointer;
        }

        #footer .agree_ input[type="checkbox"] {
            width: 18px;
            height: 18px;
            accent-color: #ff5014;
            cursor: pointer;
            margin: 0;
        }

        #footer .agree_ a {
            color: #ffffff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        #footer .form-submit-btn {
            width: 100%;
            height: 56px;
            border-radius: 12px;
        }

        /* Быстрая связь и ЭТП ГПБ */
        .footer-extras {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 32px 0 60px;
            position: relative;
            z-index: 2;
        }

        .alt-contact-box, .etp-box {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 16px;
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .alt-contact-txt, .etp-title {
            font-size: 15px;
            font-weight: 500;
            color: #ffffff;
            margin-bottom: 6px;
        }

        .alt-contact-sub, .etp-desc {
            font-size: 13px;
            line-height: 1.5;
            color: rgba(255, 255, 255, 0.52);
            margin-bottom: 20px;
        }

        .alt-contact-links, .etp-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .alt-link, .etp-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 20px;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 500;
            color: #ffffff;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .alt-link:hover, .etp-btn:hover {
            border-color: rgba(255, 80, 20, 0.6);
            background: rgba(255, 80, 20, 0.08);
            color: #ffffff;
        }

        /* Нижняя часть футера */
        #footer .footer-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin-bottom: 48px;
            position: relative;
            z-index: 2;
        }

        #footer .footer-brand-row {
            display: flex;
            align-items: center;
            margin-bottom: 36px;
            position: relative;
            z-index: 2;
        }

        #footer .footer-logo-img {
            height: 38px;
            width: auto;
        }

        #footer .grid {
            display: grid;
            grid-template-columns: 1fr 1.6fr 1.2fr;
            gap: 48px;
            position: relative;
            z-index: 2;
        }

        #footer .grid a,
        #footer .grid p {
            color: rgba(255, 255, 255, 0.52);
            font-size: 14px;
            line-height: 1.6;
        }

        #footer .grid a:hover {
            color: #ffffff;
        }

        #footer .mnu {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        #footer .mnu a {
            font-size: 15px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s ease;
        }

        #footer .etc {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        #footer .etc strong {
            color: #ffffff;
            font-weight: 500;
        }

        #footer .contacts-col {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        #footer .contacts-phone {
            font-size: 18px;
            font-weight: 500;
            color: #ffffff !important;
            line-height: 1.2;
        }

        #footer .footer-bottom-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.36);
            position: relative;
            z-index: 2;
        }

        #footer .footer-bottom-row a {
            color: rgba(255, 255, 255, 0.36);
        }

        #footer .footer-bottom-row a:hover {
            color: #ffffff;
        }

        #footer .footer-giant-logo {
            font-size: clamp(80px, 17vw, 240px);
            font-weight: 900;
            letter-spacing: -0.05em;
            color: rgba(255, 255, 255, 0.035);
            text-align: center;
            line-height: 0.75;
            margin: 40px 0 -25px;
            user-select: none;
            pointer-events: none;
            position: relative;
            z-index: 1;
            text-transform: uppercase;
        }

        @media (max-width: 992px) {
            #footer .form-grid {
                grid-template-columns: 1fr;
            }
            #footer .form_ .message_,
            #footer .form_ .agree_,
            #footer .form_ .btn_ {
                grid-column: 1;
            }
            .footer-extras {
                grid-template-columns: 1fr;
            }
            #footer .grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            #footer .footer-brand-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            #footer .footer-logo-tagline {
                border-left: none;
                padding-left: 0;
            }
            #footer .footer-bottom-row {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

        @media (max-width: 768px) {
            #footer {
                margin-top: 24px;
                padding: 36px 0 0;
            }
            .footer-inner {
                padding: 0 16px !important;
            }
            #footer .form_ {
                margin-bottom: 40px;
            }
            #footer .form-header {
                margin-bottom: 24px;
            }
            #footer .form-title {
                font-size: 27px;
                line-height: 1.18;
                margin-bottom: 10px;
            }
            #footer .form-subtitle {
                font-size: 13.5px;
                line-height: 1.45;
            }
            #footer .form-grid {
                gap: 12px;
                margin-bottom: 20px;
            }
            #footer .form_ input,
            #footer .form_ select,
            #footer .form_ textarea {
                height: 48px;
                padding: 12px 16px;
                font-size: 14px;
            }
            #footer .form-submit-btn {
                height: 48px;
            }
            .footer-extras {
                margin: 24px 0 36px;
            }
            #footer .footer-giant-logo {
                font-size: 72px;
                margin: 20px 0 -10px;
            }
        }

        /* ==========================================================================
           СТРАНИЦА КОНТАКТЫ (/kontakty/)
           Hero-карта и реквизиты предприятия
           ========================================================================== */

        .page-contacts-hero {
            background: 
                radial-gradient(circle 900px at 50% 140px, rgba(255, 65, 10, 0.38) 0%, rgba(255, 35, 5, 0.18) 50%, transparent 85%),
                url("../images/grad-top.webp") 50% 0 / cover no-repeat,
                #0a0a0a !important;
        }

        .hero-map-box {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            overflow: hidden;
            border-radius: 24px 24px 0 0;
            pointer-events: none; /* По умолчанию свободный скролл страницы */
        }

        .hero-map-box.is-active {
            pointer-events: auto; /* Включается при нажатии кнопки в плашке для зума и управления */
        }

        .hero-map-box iframe,
        .hero-map-box #hero-map-canvas {
            width: 100%;
            height: 100%;
            border: none;
            /* Светлая контрастная схема без черноты и без миганий */
            filter: invert(88%) hue-rotate(180deg) contrast(105%) brightness(1.15);
            opacity: 0.72;
        }

        .hero-map-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 10, 10, 0.72) 0%, rgba(10, 10, 10, 0.1) 40%, rgba(10, 10, 10, 0.45) 75%, #0a0a0a 100%);
            pointer-events: none;
            z-index: 2;
        }

        /* Собственный ярко-красный маркер завода BURN */
        .custom-factory-pin {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -100%);
            z-index: 3;
            pointer-events: none;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .custom-factory-pin svg {
            filter: drop-shadow(0 4px 14px rgba(255, 38, 0, 0.75));
        }

        .factory-pin-label {
            margin-top: 6px;
            background: rgba(17, 17, 17, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #ffffff;
            font-size: 12.5px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 16px;
            white-space: nowrap;
            backdrop-filter: blur(6px);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
        }

        .map-mode-hint {
            position: absolute;
            top: 24px;
            right: 32px;
            z-index: 10;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            background: rgba(17, 17, 17, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 8px 16px;
            border-radius: 30px;
            backdrop-filter: blur(8px);
            cursor: pointer;
            transition: all 0.25s ease;
            user-select: none;
        }

        .map-mode-hint:hover {
            color: #ffffff;
            border-color: rgba(255, 107, 0, 0.5);
            background: rgba(25, 25, 25, 0.95);
        }

        .map-mode-hint.is-active {
            color: #ff6b00;
            border-color: #ff6b00;
            background: rgba(30, 20, 15, 0.95);
        }

        .contacts-cards-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
            width: 100%;
            box-sizing: border-box;
        }

        .contacts-info-card {
            background: rgba(18, 18, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-sizing: border-box;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            transition: border-color 0.25s ease;
        }

        .contacts-info-card:hover {
            border-color: rgba(255, 255, 255, 0.28);
        }

        .contacts-card-head {
            font-size: 21px;
            font-weight: 500;
            color: #ffffff;
            margin: 0 0 16px;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .contacts-card-phone-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 16px;
        }

        .contacts-card-phone {
            font-size: 22px;
            font-weight: 500;
            color: #ffffff;
            text-decoration: none;
            letter-spacing: -0.01em;
            transition: color 0.2s ease;
        }

        .contacts-card-phone:hover {
            color: #ff6b00;
        }

        .contacts-card-email {
            font-size: 19px;
            font-weight: 500;
            color: #ff6b00;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 14px;
            transition: opacity 0.2s ease;
        }

        .contacts-card-email:hover {
            opacity: 0.85;
        }

        .contacts-card-body {
            font-size: 15px;
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.95);
            margin: 0;
            font-weight: 400;
        }

        @media (max-width: 1080px) {
            .contacts-cards-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .contacts-info-card {
                padding: 24px 18px;
                border-radius: 16px;
            }
            .contacts-card-phone {
                font-size: 20px;
            }
        }

        .contacts-req-container {
            position: relative;
            z-index: 2;
            width: 100%;
            background: rgba(18, 18, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 40px;
            box-sizing: border-box;
            margin-top: 36px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .contacts-req-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px 48px;
            margin-bottom: 36px;
        }

        .contacts-req-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 14px;
        }

        .contacts-req-label {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }

        .contacts-req-val {
            font-size: 18px;
            font-weight: 500;
            color: #ffffff;
            line-height: 1.45;
        }

        .contacts-req-actions {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 1080px) {
            .contacts-transform-grid {
                grid-template-columns: 1fr;
            }
            .contacts-req-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-map-box {
                border-radius: 16px 16px 0 0;
            }
            .contacts-req-container {
                padding: 24px 16px;
                border-radius: 16px;
            }
        }

        /* ==========================================================================
           КОМПОНЕНТ: Модальное окно «Заказ тест-образца» (.sample-modal)
           Изолированные стили попап-формы обратной связи
           ========================================================================== */
        body.modal-open {
            overflow: hidden !important;
        }

        .sample-modal {
            position: fixed;
            inset: 0;
            z-index: 9999;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px;
            box-sizing: border-box;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .sample-modal.open {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }

        .sample-modal-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.82);
            -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
            cursor: pointer;
        }

        .sample-modal-dialog {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 520px;
            max-height: min(90vh, 680px);
            background: #0d0d0d;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 40px 36px 36px;
            box-sizing: border-box;
            box-shadow: 0 30px 80px rgba(0, 0, 0, 0.92), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
            transform: translateY(18px) scale(0.97);
            transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
            overflow-y: auto;
            overscroll-behavior: contain;
        }

        .sample-modal.open .sample-modal-dialog {
            transform: translateY(0) scale(1);
        }

        .sample-modal-close {
            position: absolute;
            top: 22px;
            right: 22px;
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            transition: background 0.2s ease, border-color 0.2s ease, transform 0.25s ease;
            z-index: 3;
        }

        .sample-modal-close:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.24);
            transform: rotate(90deg);
        }

        .sample-modal-close .modal-close-line {
            position: absolute;
            width: 14px;
            height: 1.5px;
            background: #ffffff;
            border-radius: 1px;
            transition: background 0.2s ease;
        }

        .sample-modal-close .line-1 {
            transform: rotate(45deg);
        }

        .sample-modal-close .line-2 {
            transform: rotate(-45deg);
        }

        .sample-modal-header {
            margin-bottom: 24px;
            padding-right: 28px;
        }

        .sample-modal-title {
            font-size: 26px;
            font-weight: 400;
            line-height: 1.2;
            letter-spacing: -0.025em;
            color: #ffffff;
            margin: 0 0 8px;
        }

        .sample-modal-subtitle {
            font-size: 14px;
            line-height: 1.5;
            color: rgba(255, 255, 255, 0.52);
            margin: 0;
        }

        .sample-modal-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .sample-field {
            display: block;
            position: relative;
            width: 100%;
        }

        .sample-field input,
        .sample-field textarea {
            background: rgba(255, 255, 255, 0.03);
            -webkit-backdrop-filter: blur(28px);
            backdrop-filter: blur(28px);
            border-radius: 12px;
            width: 100%;
            font: 400 15px/1.3 'Manrope', sans-serif;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.08);
            outline: none;
            box-sizing: border-box;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .sample-field input {
            height: 52px;
            padding: 0 18px;
        }

        .sample-field textarea {
            height: 84px;
            padding: 14px 18px;
            resize: none;
        }

        .sample-field input:focus,
        .sample-field textarea:focus {
            border-color: rgba(255, 80, 20, 0.65);
            background: rgba(255, 255, 255, 0.05);
        }

        .sample-field input::placeholder,
        .sample-field textarea::placeholder {
            color: rgba(255, 255, 255, 0.36);
        }

        .sample-agree {
            margin: 2px 0 6px;
        }

        .sample-agree label {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 12px;
            line-height: 1.45;
            color: rgba(255, 255, 255, 0.48);
            cursor: pointer;
        }

        .sample-agree input[type="checkbox"] {
            width: 16px;
            height: 16px;
            margin: 1px 0 0;
            accent-color: #ff5014;
            cursor: pointer;
            flex-shrink: 0;
        }

        .sample-agree a {
            color: rgba(255, 255, 255, 0.72);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .sample-agree a:hover {
            color: #ffffff;
        }

        .sample-submit-btn {
            width: 100%;
            height: 52px;
            margin-top: 6px;
            display: inline-flex;
            justify-content: center;
            align-items: center;
        }

        .sample-submit-btn .hover {
            font-size: 14.5px;
            font-weight: 500;
            letter-spacing: 0.01em;
            text-align: center;
        }

        /* Информационная сводка параметров калькулятора в модальном окне */
        .calc-modal-summary {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 14px 18px;
            margin-bottom: 8px;
            box-sizing: border-box;
        }

        .calc-modal-summary-head {
            margin-bottom: 10px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .calc-modal-summary-type {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: -0.01em;
            color: #ffffff;
        }

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

        .calc-modal-summary-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .calc-modal-summary-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.44);
            line-height: 1.3;
        }

        .calc-modal-summary-val {
            font-size: 14px;
            font-weight: 600;
            color: #ffffff;
            font-family: 'Space Grotesk', 'Manrope', sans-serif;
        }

        @media (max-width: 560px) {
            .calc-modal-summary-grid {
                grid-template-columns: 1fr;
                gap: 8px;
            }
        }

        /* Адаптив модального окна */
        @media (max-width: 560px) {
            .sample-modal {
                padding: 16px;
            }

            .sample-modal-dialog {
                padding: 30px 20px 24px;
                border-radius: 16px;
            }

            .sample-modal-title {
                font-size: 22px;
            }

            .sample-modal-subtitle {
                font-size: 13px;
            }

            .sample-modal-close {
                top: 16px;
                right: 16px;
                width: 32px;
                height: 32px;
            }
        }

        /* Компактный режим для низких экранов (например, iPhone в ландшафте 956x440) */
        @media (max-height: 540px) {
            .sample-modal {
                padding: 10px;
            }

            .sample-modal-dialog {
                padding: 20px 24px;
                max-height: 96vh;
            }

            .sample-modal-header {
                margin-bottom: 14px;
                padding-right: 28px;
            }

            .sample-modal-title {
                font-size: 20px;
                margin-bottom: 4px;
            }

            .sample-modal-subtitle {
                font-size: 12px;
                line-height: 1.35;
            }

            .sample-modal-form {
                gap: 8px;
            }

            .sample-field input {
                height: 42px;
                padding: 0 14px;
                font-size: 13.5px;
            }

            .sample-field textarea {
                height: 52px;
                padding: 8px 14px;
                font-size: 13.5px;
            }

            .sample-submit-btn {
                height: 44px;
            }
        }

        /* Мобильная адаптация подзаголовка и скрытие десктопных переносов */
        @media (max-width: 768px) {
            .page-production .hero-subtitle .line-main {
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 6px !important;
                line-height: 1.4 !important;
                max-width: 380px !important;
                margin: 0 auto !important;
            }
            .page-production .hero-subtitle .line-main .sub-phrase {
                display: inline-flex !important;
                gap: 4px !important;
            }
            .page-production .hero-subtitle .line-specs {
                flex-direction: row !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                gap: 6px !important;
                font-size: 12px !important;
            }
            .page-production .hero-subtitle .line-specs .spec-dot-wrap {
                display: inline-flex !important;
            }
            .desktop-br {
                display: none !important;
            }
        }

        /* ==========================================================================
           БЛОК 2: ПРОИЗВОДСТВЕННАЯ БАЗА И ИСТОРИЯ ЗАВОДА (#about)
           Сплит-макет: реальное фото комплекса (слева) + временная шкала и параметры (справа)
           ========================================================================== */
        .section-factory-history {
            width: 100%;
            padding: 90px 0 60px;
            position: relative;
            z-index: 1;
            box-sizing: border-box;
            scroll-margin-top: 100px;
        }

        .factory-history-header {
            text-align: center;
            margin-bottom: 50px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .factory-history-header .calc-title {
            max-width: 1400px;
            font-size: clamp(34px, 3.8vw, 62px);
            font-weight: 300;
            line-height: 1.12;
            letter-spacing: -0.03em;
        }

        .factory-history-header .calc-subtitle {
            font-size: clamp(16px, 1.25vw, 19px);
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.52);
            max-width: 860px;
        }

        /* Основной сплит-контейнер */
        .factory-split-layout {
            display: grid;
            grid-template-columns: 1fr 1.08fr;
            gap: 36px;
            width: 100%;
            align-items: stretch;
        }

        /* Левая колонка: Фото производственного комплекса (чёткая рамка без затемнения) */
        .factory-visual-col {
            background: #111111;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            display: flex;
            flex-direction: column;
            min-height: 560px;
        }

        .factory-img-wrap {
            position: relative;
            width: 100%;
            flex: 1 1 auto;
            min-height: 480px;
            overflow: hidden;
        }

        .factory-main-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center center;
            display: block;
        }

        .factory-img-caption {
            background: #0e0e0e;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 24px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            z-index: 2;
        }

        .caption-title {
            font-size: 16px;
            font-weight: 500;
            color: #ffffff;
            letter-spacing: -0.01em;
        }

        .caption-sub {
            font-size: 13px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.4;
        }

        /* Правая колонка: Временная шкала и интегрированные параметры (бесшовный мягкий градиент) */
        .factory-timeline-col {
            background: transparent;
            border: none;
            padding: 20px 16px;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .factory-timeline-col::before {
            content: '';
            position: absolute;
            inset: -40px;
            background: radial-gradient(ellipse 65% 55% at 50% 42%, rgba(255, 52, 7, 0.22) 0%, rgba(246, 47, 3, 0.10) 30%, rgba(246, 47, 3, 0.02) 55%, transparent 72%);
            filter: blur(16px);
            pointer-events: none;
            z-index: 1;
        }

        .factory-timeline-wrap {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            height: 100%;
            justify-content: space-between;
            gap: 32px;
        }

        /* Временная ось */
        .timeline-axis {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 24px;
            padding-left: 28px;
        }

        .timeline-axis::before {
            content: '';
            position: absolute;
            top: 8px;
            bottom: 8px;
            left: 5px;
            width: 2px;
            background: linear-gradient(180deg, #ff4500 0%, rgba(255, 69, 0, 0.5) 45%, rgba(255, 255, 255, 0.15) 100%);
        }

        .timeline-step {
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .timeline-node {
            position: absolute;
            left: -28px;
            top: 2px;
            width: 12px;
            height: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .timeline-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #ff4500;
            box-shadow: 0 0 10px rgba(255, 69, 0, 0.7);
        }

        .timeline-step:nth-child(2) .timeline-dot {
            background: #ff6a00;
            box-shadow: 0 0 8px rgba(255, 106, 0, 0.5);
        }

        .timeline-step:nth-child(3) .timeline-dot {
            background: #ff8c00;
            box-shadow: 0 0 8px rgba(255, 140, 0, 0.5);
        }

        .timeline-date {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: #ff5014;
            text-transform: uppercase;
            margin-bottom: 4px;
        }

        .timeline-heading {
            font-size: 17.5px;
            font-weight: 500;
            line-height: 1.35;
            color: #ffffff;
            margin: 0 0 8px 0;
            letter-spacing: -0.015em;
        }

        .timeline-desc {
            font-size: 14px;
            font-weight: 400;
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
            letter-spacing: -0.005em;
        }

        /* Интегрированная полоса ключевых параметров завода */
        .factory-stats-strip {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 8px;
        }

        .stat-pill-item {
            display: flex;
            flex-direction: column;
            gap: 3px;
        }

        .stat-pill-val {
            font-size: clamp(30px, 2.4vw, 40px);
            font-weight: 400;
            line-height: 1.08;
            letter-spacing: -0.025em;
            background: linear-gradient(135deg, #ff3407 0%, #fc964c 45%, #f62f03 80%, #fd7c34 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .stat-pill-desc {
            font-size: 12.5px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.35;
        }

        .stat-pill-sep {
            color: rgba(255, 255, 255, 0.2);
            font-size: 14px;
        }

        /* Адаптив под планшеты */
        @media (min-width: 769px) and (max-width: 1080px) {
            .section-factory-history {
                padding: 60px 0 45px;
            }
            .factory-history-header {
                margin-bottom: 36px;
            }
            .factory-split-layout {
                gap: 18px;
            }
            .factory-visual-col {
                min-height: 480px;
            }
            .factory-timeline-col {
                padding: 8px 0 8px 6px;
            }
            .timeline-axis {
                gap: 20px;
            }
            .timeline-heading {
                font-size: 16px;
            }
            .timeline-desc {
                font-size: 13px;
            }
            .stat-pill-val {
                font-size: 20px;
            }
            .stat-pill-desc {
                font-size: 11.5px;
            }
        }

        /* Адаптив под смартфоны */
        @media (max-width: 768px) {
            .section-factory-history {
                padding: 44px 0 36px;
            }
            .factory-history-header {
                margin-bottom: 28px;
            }
            .factory-history-header .calc-title {
                font-size: clamp(24px, 5.8vw, 30px);
                line-height: 1.2;
            }
            .factory-split-layout {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .factory-visual-col {
                min-height: 300px;
                height: 300px;
            }
            .factory-img-caption {
                padding: 20px 18px;
            }
            .caption-title {
                font-size: 17px;
            }
            .caption-sub {
                font-size: 12.5px;
            }
            .factory-timeline-col {
                padding: 10px 0 0 0;
            }
            .timeline-axis {
                gap: 20px;
                padding-left: 24px;
            }
            .timeline-node {
                left: -24px;
            }
            .timeline-heading {
                font-size: 16px;
            }
            .timeline-desc {
                font-size: 13px;
            }
            .factory-stats-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding-top: 18px;
            }
            .stat-pill-sep {
                display: none;
            }
            .stat-pill-item {
                flex-direction: row;
                align-items: baseline;
                gap: 8px;
            }
            .stat-pill-val {
                font-size: 20px;
            }
            .stat-pill-desc {
                font-size: 12.5px;
            }
        }

        /* ==========================================================================
           ЭКРАН 3: ТЕХНОЛОГИЧЕСКИЙ ПРОЦЕСС СЕРИЙНОГО ПРОИЗВОДСТВА (#process)
           Сторителлинг полного цикла в карточках с реальными фото производства
           ========================================================================== */
        .section-process {
            width: 100%;
            padding: 60px 0 80px;
            position: relative;
            z-index: 1;
            box-sizing: border-box;
            scroll-margin-top: 100px;
        }

        .process-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .process-header .calc-title {
            max-width: 1400px;
            margin: 0 auto 20px;
        }

        .process-header .calc-subtitle {
            max-width: 860px;
            margin: 0 auto;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            width: 100%;
            box-sizing: border-box;
        }

        .box_.process-box {
            min-height: 540px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            background: #0a0a0a;
        }

        .box_.process-box .box {
            min-height: 540px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 48px 40px;
            box-sizing: border-box;
        }

        .process-box .cnt {
            display: flex;
            flex-direction: column;
            align-items: center;
            transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
        }
        }

        .process-box:hover .cnt {
            transform: translateY(-8px);
        }

        .process-box .cnt h2 {
            font-size: clamp(26px, 2.5vw, 40px);
            font-weight: 300;
            line-height: 1.15;
            letter-spacing: -0.025em;
            color: #ffffff;
            margin: 0 0 16px 0;
            text-align: center;
        }

        .process-box .cnt p {
            font-size: clamp(14px, 1.15vw, 16px);
            line-height: 1.6;
            color: #ffffff;
            opacity: 0.65;
            transition: opacity 0.4s ease;
            max-width: 480px;
            margin: 0 auto;
            letter-spacing: -0.01em;
            text-align: center;
        }

        .process-box:hover .cnt p {
            opacity: 0.95;
        }

        /* Адаптив под планшеты */
        @media (min-width: 769px) and (max-width: 1080px) {
            .section-process {
                padding: 50px 0 50px;
            }
            .process-header {
                margin-bottom: 36px;
            }
            .process-grid {
                gap: 18px;
            }
            .box_.process-box,
            .box_.process-box .box {
                min-height: 480px;
                padding: 40px 28px;
            }
            .process-box .cnt h2 {
                font-size: 28px;
            }
            .process-box .cnt p {
                font-size: 14px;
            }
        }

        /* Адаптив под смартфоны */
        @media (max-width: 768px) {
            .section-process {
                padding: 40px 0 36px;
            }
            .process-header {
                margin-bottom: 28px;
            }
            .process-header .calc-title {
                font-size: clamp(24px, 5.8vw, 30px);
                line-height: 1.2;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .box_.process-box,
            .box_.process-box .box {
                min-height: 420px;
                padding: 36px 20px;
            }
            .process-box .cnt h2 {
                font-size: 24px;
                margin-bottom: 12px;
            }
            .process-box .cnt p {
                font-size: 13.5px;
                line-height: 1.5;
            }
        }

        /* ==========================================================================
           Страница Политики обработки персональных данных (чистая вёрстка на всю ширину)
           ========================================================================== */
        .policy-wrapper {
            width: 100%;
            margin: 0;
            padding: 56px 0 90px;
            box-sizing: border-box;
        }

        .policy-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .policy-header .calc-title {
            margin: 0 auto 16px;
            max-width: 100%;
            font-size: clamp(28px, 3.4vw, 46px);
            line-height: 1.18;
            letter-spacing: -0.02em;
            color: #ffffff;
        }

        .policy-header .calc-subtitle {
            margin: 0 auto;
            max-width: 820px;
            font-size: 16px;
            line-height: 1.55;
            color: rgba(255, 255, 255, 0.65);
        }

        .policy-article {
            width: 100%;
            background: transparent !important;
            border: none !important;
            box-shadow: none !important;
            padding: 0 !important;
            box-sizing: border-box;
        }

        .policy-article h2 {
            font-size: 24px;
            font-weight: 600;
            color: #ffffff;
            margin: 44px 0 18px;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .policy-article h2:first-child {
            margin-top: 0;
        }

        .policy-article p {
            font-size: 15px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.72);
            margin: 0 0 16px;
        }

        .policy-article ul {
            margin: 0 0 20px 24px;
            padding: 0;
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            line-height: 1.75;
        }

        .policy-article li {
            margin-bottom: 8px;
        }

        .policy-article strong {
            color: #ffffff;
            font-weight: 600;
        }

        .policy-req-box {
            margin-top: 52px;
            padding: 36px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            background: transparent !important;
            border-radius: 0 !important;
        }

        .policy-req-title {
            font-size: 20px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 24px;
        }

        .policy-req-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px 40px;
        }

        .policy-req-item {
            font-size: 14px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.7);
        }

        .policy-req-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: rgba(255, 255, 255, 0.4);
            margin-bottom: 4px;
        }

        .policy-req-val {
            color: #ffffff;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .policy-wrapper {
                padding: 36px 0 60px;
            }
            .policy-header {
                margin-bottom: 32px;
            }
            .policy-header .calc-title {
                font-size: 24px;
                line-height: 1.25;
            }
            .policy-header .calc-subtitle {
                font-size: 14px;
            }
            .policy-article h2 {
                font-size: 20px;
                margin: 32px 0 14px;
            }
            .policy-article p,
            .policy-article ul {
                font-size: 14px;
                line-height: 1.65;
            }
            .policy-req-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .policy-req-box {
                margin-top: 36px;
                padding-top: 24px;
            }
        }

        /* ==========================================================================
           Кнопка "Смотреть технические характеристики" между манифестом и тикером
           ========================================================================== */
        .weare-btn-row {
            margin-top: 28px;
            display: flex;
            justify-content: center;
            position: relative;
            z-index: 10;
        }

        @media (max-width: 768px) {
            .weare-btn-row {
                margin-top: 22px;
            }
        }

        /* ==========================================================================
           КОМПОНЕНТ: Модальное окно технических характеристик (.specs-modal)
           ========================================================================== */
        .specs-modal-dialog {
            max-width: 640px;
            max-height: min(90vh, 780px);
            overflow-y: auto;
        }

        .specs-table-wrap {
            display: flex;
            flex-direction: column;
            margin: 18px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .specs-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
            gap: 16px;
        }

        .specs-param {
            color: rgba(255, 255, 255, 0.6);
            flex: 1;
        }

        .specs-val {
            color: #ffffff;
            font-weight: 500;
            text-align: right;
            flex-shrink: 0;
        }

        .specs-modal-footer {
            display: flex;
            justify-content: center;
            margin-top: 6px;
        }

        @media (max-width: 560px) {
            .specs-modal-dialog {
                padding: 28px 18px 22px;
            }
            .specs-row {
                font-size: 13px;
                padding: 9px 0;
                gap: 12px;
            }
        }