/* =========================================================
         CSS Custom Properties
      ========================================================= */
      :root {
        --clr-primary:   #0d47a1;
        --clr-accent:    #1976d2;
        --clr-accent-lt: #42a5f5;
        --clr-bg:        #f4f7fb;
        --clr-white:     #ffffff;
        --clr-dark:      #0a0f1e;
        --clr-text:      #374151;
        --clr-muted:     #6b7280;
        --clr-border:    #e5e7eb;
        --radius-sm:     8px;
        --radius-md:     16px;
        --radius-lg:     24px;
        --shadow-sm:     0 1px 4px rgba(0,0,0,.06);
        --shadow-md:     0 4px 20px rgba(13,71,161,.10);
        --shadow-lg:     0 12px 40px rgba(13,71,161,.18);
        --transition:    .3s cubic-bezier(.4,0,.2,1);
        --container:     1200px;
        --font-body:     'Inter', system-ui, sans-serif;
        --font-display:  'Montserrat', 'Inter', sans-serif;
      }

      /* =========================================================
         Reset & Base
      ========================================================= */
      *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
      html { scroll-behavior: smooth; }
      body {
        font-family: var(--font-body);
        font-size: 16px;
        line-height: 1.7;
        color: var(--clr-text);
        background: var(--clr-white);
        -webkit-font-smoothing: antialiased;
      }
      a { color: inherit; text-decoration: none; }
      img { max-width: 100%; display: block; }
      ul { list-style: none; }

      /* =========================================================
         Utility
      ========================================================= */
      .container {
        width: 100%;
        max-width: var(--container);
        margin-inline: auto;
        padding-inline: 24px;
      }
      .sr-only {
        position: absolute; width: 1px; height: 1px;
        padding: 0; margin: -1px; overflow: hidden;
        clip: rect(0,0,0,0); border: 0;
      }

      /* =========================================================
         HEADER / NAV
      ========================================================= */
      .site-header {
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 1000;
        background: rgba(255,255,255,.85);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--clr-border);
        transition: box-shadow var(--transition);
      }
      .site-header.scrolled { box-shadow: var(--shadow-md); }

      .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 68px;
      }

      .nav-logo img {
        height: 50px;
        width: auto;
        object-fit: contain;
      }

      .nav-menu {
        display: flex;
        align-items: center;
        gap: 4px;
      }
      .nav-menu a {
        font-size: 14px;
        font-weight: 600;
        letter-spacing: .03em;
        color: var(--clr-text);
        padding: 8px 16px;
        border-radius: var(--radius-sm);
        transition: color var(--transition), background var(--transition);
        text-transform: uppercase;
      }
      .nav-menu a:hover,
      .nav-menu a.active {
        color: var(--clr-accent);
        background: rgba(25,118,210,.07);
      }

      /* Hamburger */
      .nav-toggle {
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        width: 44px; height: 44px;
        border: none;
        background: none;
        cursor: pointer;
        border-radius: var(--radius-sm);
      }
      .nav-toggle span {
        display: block;
        width: 24px; height: 2px;
        background: var(--clr-primary);
        border-radius: 2px;
        transition: transform var(--transition), opacity var(--transition);
      }
      .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
      .nav-toggle.open span:nth-child(2) { opacity: 0; }
      .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

      /* =========================================================
         HERO
      ========================================================= */
      .hero {
        position: relative;
        min-height: 100svh;
        display: flex;
        align-items: center;
        overflow: hidden;
        background: var(--clr-dark);
      }
      .hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('img/slides/1.jpg');
        background-size: cover;
        background-position: center;
        opacity: .38;
        transform: scale(1.04);
        transition: transform 8s ease;
      }
      .hero:hover .hero-bg { transform: scale(1); }

      /* Gradient overlay */
      .hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(
          135deg,
          rgba(13,71,161,.72) 0%,
          rgba(10,15,30,.55) 100%
        );
      }

      .hero-content {
        position: relative;
        z-index: 1;
        color: var(--clr-white);
        max-width: 720px;
        padding-top: 80px; /* compensate fixed header */
      }

      .hero-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: .12em;
        text-transform: uppercase;
        color: var(--clr-accent-lt);
        margin-bottom: 20px;
      }
      .hero-eyebrow::before {
        content: '';
        display: block;
        width: 28px; height: 2px;
        background: var(--clr-accent-lt);
        border-radius: 2px;
      }

      .hero-title {
        font-family: var(--font-display);
        font-size: clamp(2.4rem, 6vw, 5rem);
        font-weight: 900;
        line-height: 1.08;
        letter-spacing: -.02em;
        margin-bottom: 24px;
        color: var(--clr-white);
      }
      .hero-title span {
        background: linear-gradient(90deg, var(--clr-accent-lt), #90caf9);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
      }

      .hero-desc {
        font-size: clamp(1rem, 2vw, 1.2rem);
        font-weight: 400;
        color: rgba(255,255,255,.80);
        max-width: 540px;
        margin-bottom: 40px;
      }

      .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
      }

      /* Scroll indicator */
      .hero-scroll {
        position: absolute;
        bottom: 36px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        color: rgba(255,255,255,.55);
        font-size: 11px;
        letter-spacing: .1em;
        text-transform: uppercase;
        cursor: pointer;
        animation: bounce 2s infinite;
      }
      .hero-scroll svg { width: 24px; height: 24px; }
      @keyframes bounce {
        0%, 100% { transform: translateX(-50%) translateY(0); }
        50%       { transform: translateX(-50%) translateY(6px); }
      }

      /* =========================================================
         BUTTONS
      ========================================================= */
      .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        border-radius: 50px;
        font-size: 14px;
        font-weight: 700;
        letter-spacing: .04em;
        text-transform: uppercase;
        border: 2px solid transparent;
        cursor: pointer;
        transition: all var(--transition);
        white-space: nowrap;
      }
      .btn-primary {
        background: var(--clr-accent);
        color: var(--clr-white);
        border-color: var(--clr-accent);
        box-shadow: 0 4px 16px rgba(25,118,210,.35);
      }
      .btn-primary:hover {
        background: var(--clr-primary);
        border-color: var(--clr-primary);
        box-shadow: 0 8px 24px rgba(13,71,161,.40);
        transform: translateY(-2px);
      }
      .btn-outline {
        background: transparent;
        color: var(--clr-white);
        border-color: rgba(255,255,255,.55);
      }
      .btn-outline:hover {
        background: rgba(255,255,255,.12);
        border-color: var(--clr-white);
        transform: translateY(-2px);
      }
      .btn-blue {
        background: var(--clr-primary);
        color: var(--clr-white);
        border-color: var(--clr-primary);
      }
      .btn-blue:hover {
        background: #0a3880;
        border-color: #0a3880;
        transform: translateY(-2px);
      }

      /* =========================================================
         SECTION COMMONS
      ========================================================= */
      .section { padding: 96px 0; }
      .section-sm { padding: 64px 0; }

      .section-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 12px;
        font-weight: 700;
        letter-spacing: .14em;
        text-transform: uppercase;
        color: var(--clr-accent);
        margin-bottom: 12px;
      }
      .section-label::before {
        content: '';
        display: block;
        width: 20px; height: 2px;
        background: var(--clr-accent);
        border-radius: 2px;
      }
      .section-title {
        font-family: var(--font-display);
        font-size: clamp(1.8rem, 4vw, 3rem);
        font-weight: 800;
        line-height: 1.15;
        letter-spacing: -.02em;
        color: var(--clr-dark);
        margin-bottom: 20px;
      }
      .section-desc {
        font-size: 1.05rem;
        color: var(--clr-muted);
        max-width: 540px;
      }

      /* =========================================================
         INTRO / CTA BAND
      ========================================================= */
      .cta-band {
        background: linear-gradient(135deg, var(--clr-primary) 0%, #1565c0 100%);
        padding: 56px 0;
      }
      .cta-band-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 32px;
        flex-wrap: wrap;
      }
      .cta-band-text { flex: 1 1 480px; }
      .cta-band-text h2 {
        font-family: var(--font-display);
        font-size: clamp(1.4rem, 3vw, 2rem);
        font-weight: 800;
        color: var(--clr-white);
        margin-bottom: 10px;
      }
      .cta-band-text p {
        color: rgba(255,255,255,.75);
        font-size: 1rem;
      }
      .cta-band-action { flex-shrink: 0; }

      /* =========================================================
         ABOUT SECTION
      ========================================================= */
      .about-section { background: var(--clr-bg); }

      .about-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 64px;
        align-items: center;
      }

      .about-text p {
        font-size: 1.05rem;
        color: var(--clr-muted);
        margin-bottom: 24px;
      }

      .stats-row {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-top: 40px;
      }
      .stat-card {
        background: var(--clr-white);
        border-radius: var(--radius-md);
        padding: 24px 20px;
        text-align: center;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--clr-border);
        transition: box-shadow var(--transition), transform var(--transition);
      }
      .stat-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
      }
      .stat-number {
        font-family: var(--font-display);
        font-size: 2rem;
        font-weight: 900;
        color: var(--clr-accent);
        line-height: 1;
        margin-bottom: 6px;
      }
      .stat-label {
        font-size: 12px;
        font-weight: 600;
        letter-spacing: .07em;
        text-transform: uppercase;
        color: var(--clr-muted);
      }

      .about-image-wrap {
        position: relative;
      }
      .about-image-wrap img {
        width: 100%;
        border-radius: var(--radius-lg);
        object-fit: contain;
        box-shadow: var(--shadow-lg);
      }
      /* Decorative blob behind image */
      .about-image-wrap::before {
        content: '';
        position: absolute;
        inset: -24px;
        background: radial-gradient(circle at 60% 40%, rgba(25,118,210,.12), transparent 70%);
        border-radius: 50%;
        z-index: -1;
      }

      /* =========================================================
         PRODUCT HIGHLIGHT
      ========================================================= */
      .product-section { background: var(--clr-white); }

      .product-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 64px;
        align-items: center;
      }
      .product-grid.reverse { direction: rtl; }
      .product-grid.reverse > * { direction: ltr; }

      /* Legacy .product-image kept for compatibility */
      .product-image {
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        aspect-ratio: 4/3;
      }
      .product-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .6s ease;
      }
      .product-image:hover img { transform: scale(1.04); }

      /* ── product-media: общая обёртка (видео или fallback) ── */
      .product-media {
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        aspect-ratio: 4/3;
        position: relative;
        background: var(--clr-dark);
      }

      /* ── Fallback image (нет видео) ── */
      .vp-image-fallback {
        width: 100%;
        height: 100%;
      }
      .vp-image-fallback img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .6s ease;
      }
      .product-media:hover .vp-image-fallback img { transform: scale(1.04); }

      /* =========================================================
         VIDEO PLAYER  (.vp-*)
      ========================================================= */

      /* ── Внешняя обёртка — абсолютно растягивается на весь .product-media ── */
      .vp-wrap {
        position: absolute;
        inset: 0;
        background: var(--clr-dark);
        border-radius: inherit;
        overflow: hidden;
      }

      /* ── Постер-слой ── */
      .vp-poster {
        position: absolute;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 2;
      }
      .vp-poster-img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .7s ease, filter .4s ease;
        filter: brightness(.85);
      }
      .vp-poster:hover .vp-poster-img {
        transform: scale(1.04);
        filter: brightness(.65);
      }

      /* ── Градиентный оверлей поверх постера ── */
      .vp-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(
          180deg,
          rgba(10,15,30,.10) 0%,
          rgba(10,15,30,.55) 100%
        );
        pointer-events: none;
        z-index: 3;
        transition: opacity .4s ease;
      }
      .vp-poster:hover .vp-overlay { opacity: .7; }

      /* ── Кнопка Play ── */
      .vp-play-btn {
        position: relative;
        z-index: 4;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 12px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        outline: none;
        transform: translateY(0);
        transition: transform .35s cubic-bezier(.34,1.56,.64,1);
      }
      .vp-poster:hover .vp-play-btn { transform: translateY(-4px) scale(1.05); }
      .vp-play-btn:focus-visible .vp-play-icon {
        outline: 3px solid var(--clr-accent-lt);
        outline-offset: 4px;
        border-radius: 50%;
      }

      /* Пульсирующее кольцо вокруг иконки */
      .vp-play-ring {
        position: absolute;
        width: 80px;
        height: 80px;
        border-radius: 50%;
        border: 2px solid rgba(255,255,255,.35);
        animation: vp-ring-pulse 2.4s ease-in-out infinite;
        pointer-events: none;
      }
      @keyframes vp-ring-pulse {
        0%   { transform: scale(1);    opacity: .7; }
        50%  { transform: scale(1.32); opacity: 0; }
        100% { transform: scale(1);    opacity: .7; }
      }
      .vp-poster:hover .vp-play-ring { animation-play-state: paused; }

      /* Иконка кнопки */
      .vp-play-icon {
        width: 72px;
        height: 72px;
        filter: drop-shadow(0 4px 18px rgba(13,71,161,.50));
        transition: filter .3s ease;
      }
      .vp-poster:hover .vp-play-icon {
        filter: drop-shadow(0 6px 24px rgba(13,71,161,.80));
      }

      /* Подпись «Смотреть видео» */
      .vp-play-label {
        color: rgba(255,255,255,.90);
        font-size: .78rem;
        font-weight: 700;
        letter-spacing: .12em;
        text-transform: uppercase;
        text-shadow: 0 1px 6px rgba(0,0,0,.5);
        transition: color .3s ease;
      }
      .vp-poster:hover .vp-play-label { color: #fff; }

      /* ── HLS-бейдж (правый нижний угол постера) ── */
      .vp-badge {
        position: absolute;
        bottom: 14px;
        right: 14px;
        z-index: 5;
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 4px 10px;
        background: rgba(13,71,161,.75);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 1px solid rgba(255,255,255,.20);
        border-radius: 50px;
        color: rgba(255,255,255,.90);
        font-size: .68rem;
        font-weight: 700;
        letter-spacing: .1em;
        text-transform: uppercase;
        pointer-events: none;
      }
      .vp-badge svg {
        width: 13px;
        height: 13px;
        flex-shrink: 0;
      }

      /* ── Нативный <video> (показывается после нажатия Play) ── */
      .vp-video {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: contain;
        background: #000;
        z-index: 6;
        border-radius: inherit;
      }

      /* ── Спиннер буферизации ── */
      .vp-spinner {
        position: absolute;
        inset: 0;
        z-index: 7;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(10,15,30,.60);
        backdrop-filter: blur(4px);
      }
      .vp-spinner-ring {
        width: 52px;
        height: 52px;
        border: 3px solid rgba(255,255,255,.20);
        border-top-color: var(--clr-accent-lt);
        border-radius: 50%;
        animation: vp-spin .8s linear infinite;
      }
      @keyframes vp-spin {
        to { transform: rotate(360deg); }
      }

      /* ── Мобильный адаптив плеера ── */
      @media (max-width: 900px) {
        .product-media { aspect-ratio: 16/9; }
      }
      @media (max-width: 600px) {
        .vp-play-icon  { width: 56px; height: 56px; }
        .vp-play-ring  { width: 62px; height: 62px; }
        .vp-play-label { font-size: .7rem; }
      }

      .feature-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
        margin: 32px 0;
      }
      .feature-item {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        padding: 16px 20px;
        background: var(--clr-bg);
        border-radius: var(--radius-md);
        border-left: 3px solid var(--clr-accent);
        transition: background var(--transition);
      }
      .feature-item:hover { background: #e3f2fd; }
      .feature-icon {
        flex-shrink: 0;
        width: 40px; height: 40px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-lt));
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .feature-icon svg { width: 20px; height: 20px; color: #fff; fill: none; stroke: currentColor; stroke-width: 2; }
      .feature-text h4 {
        font-size: .95rem;
        font-weight: 700;
        color: var(--clr-dark);
        margin-bottom: 2px;
      }
      .feature-text p {
        font-size: .88rem;
        color: var(--clr-muted);
        line-height: 1.5;
      }

      /* =========================================================
         FOOTER
      ========================================================= */
      .site-footer {
        background: var(--clr-dark);
        color: rgba(255,255,255,.7);
        padding: 64px 0 0;
      }
      .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(255,255,255,.08);
      }
      .footer-brand img {
        height: 50px;
        margin-bottom: 16px;
        filter: brightness(0) invert(1);
        opacity: .85;
      }
      .footer-brand p {
        font-size: .9rem;
        line-height: 1.7;
        max-width: 300px;
      }
      .footer-contact-item {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        margin-top: 16px;
        font-size: .9rem;
      }
      .footer-contact-item svg { flex-shrink: 0; width: 18px; height: 18px; margin-top: 2px; opacity: .6; }
      .footer-contact-item a { color: var(--clr-accent-lt); transition: color var(--transition); }
      .footer-contact-item a:hover { color: var(--clr-white); }

      .footer-col h5 {
        font-size: .8rem;
        font-weight: 700;
        letter-spacing: .12em;
        text-transform: uppercase;
        color: var(--clr-white);
        margin-bottom: 20px;
      }
      .footer-nav {
        display: flex;
        flex-direction: column;
        gap: 10px;
      }
      .footer-nav a {
        font-size: .9rem;
        color: rgba(255,255,255,.6);
        transition: color var(--transition), padding-left var(--transition);
      }
      .footer-nav a:hover {
        color: var(--clr-white);
        padding-left: 6px;
      }

      .footer-legal {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        flex-wrap: wrap;
        padding: 24px 0;
        font-size: .82rem;
        color: rgba(255,255,255,.35);
      }

      /* Details */
      .detail-badge {
        display: inline-block;
        padding: 4px 10px;
        background: rgba(25,118,210,.15);
        border-radius: 50px;
        font-size: .78rem;
        color: var(--clr-accent-lt);
        margin-right: 8px;
        margin-top: 8px;
      }

      /* =========================================================
         SCROLL-TO-TOP
      ========================================================= */
      .scroll-top {
        position: fixed;
        bottom: 32px;
        right: 28px;
        z-index: 999;
        width: 48px; height: 48px;
        border-radius: 50%;
        background: var(--clr-accent);
        color: var(--clr-white);
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 16px rgba(25,118,210,.45);
        opacity: 0;
        transform: translateY(16px);
        transition: all var(--transition);
        pointer-events: none;
        border: none;
        cursor: pointer;
      }
      .scroll-top.visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
      }
      .scroll-top:hover { background: var(--clr-primary); transform: translateY(-2px); }
      .scroll-top svg { width: 22px; height: 22px; }

      /* =========================================================
         RESPONSIVE
      ========================================================= */
      @media (max-width: 900px) {
        .about-grid,
        .product-grid { grid-template-columns: 1fr; gap: 40px; }
        .product-grid.reverse { direction: ltr; }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .stats-row { grid-template-columns: 1fr 1fr; }
      }

      /* ── Keyframe: пункты меню вплывают слева ── */
      @keyframes menuItemIn {
        from { opacity: 0; transform: translateX(-28px); }
        to   { opacity: 1; transform: translateX(0);     }
      }
      @keyframes menuBgIn {
        from { opacity: 0; }
        to   { opacity: 1; }
      }

      @media (max-width: 768px) {
        .section { padding: 64px 0; }
        .nav-menu { display: none; }
        .nav-toggle { display: flex; }

        /* ── Кнопка «гамбургер» — тонкие линии, удобный размер ── */
        .nav-toggle {
          width: 48px; height: 48px;
          border-radius: 12px;
          background: rgba(13,71,161,.07);
          transition: background var(--transition);
        }
        .nav-toggle:hover { background: rgba(13,71,161,.13); }
        .nav-toggle.open  { background: rgba(255,255,255,.12); }
        .nav-toggle.open span { background: #fff; }

        /* ── Полноэкранное меню ── */
        .nav-menu.open {
          display: flex;
          flex-direction: column;
          position: fixed;
          top: 0; left: 0; right: 0;
          height: 100vh;
          height: 100dvh;
          z-index: 1001;                     /* выше хедера */
          overflow-y: auto;
          -webkit-overflow-scrolling: touch;
          overscroll-behavior: contain;

          /* Тёмно-синий градиент */
          background: linear-gradient(158deg, #071638 0%, #0d47a1 55%, #071a3a 100%);
          animation: menuBgIn .25s ease both;

          padding: 96px 40px 56px;          /* сверху — место под хедер */
          gap: 0;
          align-items: stretch;
          counter-reset: nav-item;

          /* Декоративный круг (правый верхний) */
        }
        .nav-menu.open::before {
          content: '';
          position: fixed;
          top: -160px; right: -120px;
          width: 460px; height: 460px;
          border-radius: 50%;
          background: radial-gradient(circle, rgba(25,118,210,.35) 0%, transparent 70%);
          pointer-events: none;
          z-index: 0;
        }
        .nav-menu.open::after {
          content: '';
          position: fixed;
          bottom: -100px; left: -80px;
          width: 320px; height: 320px;
          border-radius: 50%;
          background: radial-gradient(circle, rgba(66,165,245,.20) 0%, transparent 70%);
          pointer-events: none;
          z-index: 0;
        }

        /* ── Пункты меню li (stagger-анимация) ── */
        .nav-menu.open li {
          position: relative;
          z-index: 1;
          opacity: 0;
          animation: menuItemIn .38s ease both;
        }
        .nav-menu.open li:nth-child(1) { animation-delay: .08s; }
        .nav-menu.open li:nth-child(2) { animation-delay: .14s; }
        .nav-menu.open li:nth-child(3) { animation-delay: .20s; }
        .nav-menu.open li:nth-child(4) { animation-delay: .26s; }
        .nav-menu.open li:nth-child(5) { animation-delay: .32s; }

        /* ── Ссылки ── */
        .nav-menu.open a {
          font-family: var(--font-display);
          font-size: clamp(1.6rem, 7vw, 2.4rem);
          font-weight: 800;
          letter-spacing: -.02em;
          color: rgba(255,255,255,.55);
          padding: 18px 0 18px 56px;        /* отступ под номер */
          border: none;
          border-bottom: 1px solid rgba(255,255,255,.08);
          border-radius: 0;
          display: block;
          width: 100%;
          position: relative;
          transition: color .2s ease, padding-left .2s ease;
          text-transform: uppercase;
        }
        .nav-menu.open a:last-child { border-bottom: none; }

        /* Номер перед пунктом */
        .nav-menu.open a::before {
          counter-increment: nav-item;
          content: counter(nav-item, decimal-leading-zero);
          position: absolute;
          left: 0;
          top: 50%;
          transform: translateY(-50%);
          font-family: var(--font-body);
          font-size: .72rem;
          font-weight: 700;
          letter-spacing: .12em;
          color: rgba(66,165,245,.7);
          line-height: 1;
        }

        /* Стрелка-акцент справа */
        .nav-menu.open a::after {
          content: '→';
          position: absolute;
          right: 0;
          top: 50%;
          transform: translateY(-50%) translateX(-8px);
          font-size: 1.1rem;
          color: rgba(255,255,255,.20);
          transition: transform .2s ease, color .2s ease;
        }

        /* Hover / active */
        .nav-menu.open a:hover,
        .nav-menu.open a.active {
          color: #fff;
          padding-left: 68px;
          background: none;
          border-radius: 0;
        }
        .nav-menu.open a:hover::after,
        .nav-menu.open a.active::after {
          transform: translateY(-50%) translateX(0);
          color: var(--clr-accent-lt);
        }
        .nav-menu.open a.active::before { color: var(--clr-accent-lt); }
        .nav-menu.open a.active {
          color: var(--clr-accent-lt);
        }

        /* ── Когда меню открыто — хедер прозрачный ── */
        .site-header.menu-open {
          background: transparent !important;
          backdrop-filter: none !important;
          -webkit-backdrop-filter: none !important;
          border-bottom-color: rgba(255,255,255,.10) !important;
          z-index: 1002;
        }
        .site-header.menu-open .nav-logo img {
          filter: brightness(0) invert(1);
        }
        .site-header.menu-open .nav-toggle span { background: #fff; }
      }

      @media (max-width: 600px) {
        .footer-grid { grid-template-columns: 1fr; gap: 32px; }
        .stats-row { grid-template-columns: 1fr; }
        .cta-band-inner { flex-direction: column; text-align: center; }
        .hero-actions { justify-content: center; }
        .hero-content { text-align: center; padding-top: 100px; }
        .hero-eyebrow { justify-content: center; }
        .hero-desc { margin-inline: auto; }
      }

      /* =========================================================
         PAGE HERO (inner pages)
      ========================================================= */
      .page-hero {
        position: relative;
        padding: 140px 0 80px;
        background: var(--clr-dark);
        overflow: hidden;
      }
      .page-hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('../img/slides/1.jpg');
        background-size: cover;
        background-position: center;
        opacity: .22;
      }
      .page-hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(13,71,161,.75) 0%, rgba(10,15,30,.65) 100%);
      }
      .page-hero-content {
        position: relative;
        z-index: 1;
        color: var(--clr-white);
      }
      .page-hero-content .hero-eyebrow { color: var(--clr-accent-lt); margin-bottom: 16px; }
      .page-hero-content h1 {
        font-family: var(--font-display);
        font-size: clamp(2rem, 5vw, 3.8rem);
        font-weight: 900;
        line-height: 1.1;
        letter-spacing: -.02em;
        margin-bottom: 20px;
      }
      .page-hero-content h1 span {
        background: linear-gradient(90deg, var(--clr-accent-lt), #90caf9);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
      }
      .page-hero-content p {
        font-size: clamp(.95rem, 2vw, 1.15rem);
        color: rgba(255,255,255,.78);
        max-width: 680px;
        margin-bottom: 12px;
      }

      /* =========================================================
         CAPABILITY GRID (6 icons)
      ========================================================= */
      .cap-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-top: 48px;
      }
      .cap-card {
        background: var(--clr-white);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 32px 24px;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition);
      }
      .cap-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
      }
      .cap-icon {
        width: 56px; height: 56px;
        border-radius: 14px;
        background: linear-gradient(135deg, #e3f2fd, #bbdefb);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
      }
      .cap-icon img { width: 30px; height: 30px; object-fit: contain; }
      .cap-card p {
        font-size: .92rem;
        color: var(--clr-muted);
        line-height: 1.6;
        margin: 0;
      }

      /* =========================================================
         METRICS TABLE
      ========================================================= */
      .metrics-section { background: var(--clr-bg); }
      .metrics-table {
        width: 100%;
        border-collapse: collapse;
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        margin-top: 40px;
      }
      .metrics-table thead tr {
        background: linear-gradient(135deg, var(--clr-primary) 0%, #1565c0 100%);
        color: var(--clr-white);
      }
      .metrics-table thead td {
        padding: 18px 24px;
        font-size: .85rem;
        font-weight: 700;
        letter-spacing: .07em;
        text-transform: uppercase;
      }
      .metrics-table tbody tr {
        background: var(--clr-white);
        border-bottom: 1px solid var(--clr-border);
        transition: background var(--transition);
      }
      .metrics-table tbody tr:last-child { border-bottom: none; }
      .metrics-table tbody tr:hover { background: #e8f4fd; }
      .metrics-table tbody td {
        padding: 20px 24px;
        font-size: .95rem;
        color: var(--clr-text);
        line-height: 1.6;
        vertical-align: top;
      }
      .metrics-table tbody td:last-child {
        font-weight: 700;
        color: var(--clr-accent);
        white-space: nowrap;
      }

      /* =========================================================
         BENEFITS GRID (8 cards)
      ========================================================= */
      .benefits-section { background: var(--clr-white); }
      .benefits-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        margin-top: 48px;
      }
      .benefit-card {
        background: var(--clr-bg);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 28px 22px;
        display: flex;
        flex-direction: column;
        gap: 14px;
        transition: box-shadow var(--transition), transform var(--transition);
      }
      .benefit-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
        background: var(--clr-white);
      }
      .benefit-icon {
        width: 52px; height: 52px;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
      }
      .benefit-icon.c1 { background: linear-gradient(135deg, #e3f2fd, #90caf9); }
      .benefit-icon.c2 { background: linear-gradient(135deg, #e8f5e9, #a5d6a7); }
      .benefit-icon.c3 { background: linear-gradient(135deg, #fff3e0, #ffcc80); }
      .benefit-icon.c4 { background: linear-gradient(135deg, #fce4ec, #f48fb1); }
      .benefit-icon img { width: 26px; height: 26px; object-fit: contain; }
      .benefit-card h4 {
        font-size: .95rem;
        font-weight: 700;
        color: var(--clr-dark);
        line-height: 1.3;
      }
      .benefit-card p {
        font-size: .87rem;
        color: var(--clr-muted);
        line-height: 1.6;
        flex: 1;
      }

      /* =========================================================
         PDF DOWNLOADS BAND
      ========================================================= */
      .downloads-section {
        background: linear-gradient(135deg, var(--clr-primary) 0%, #1565c0 100%);
        padding: 56px 0;
      }
      .downloads-inner {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: center;
        gap: 24px;
      }
      .download-card {
        display: flex;
        align-items: center;
        gap: 16px;
        background: rgba(255,255,255,.1);
        border: 1px solid rgba(255,255,255,.2);
        border-radius: var(--radius-md);
        padding: 20px 28px;
        color: var(--clr-white);
        font-weight: 600;
        font-size: .95rem;
        transition: background var(--transition), transform var(--transition);
      }
      .download-card:hover {
        background: rgba(255,255,255,.2);
        transform: translateY(-2px);
      }
      .download-card svg {
        width: 32px; height: 32px;
        opacity: .9;
        flex-shrink: 0;
      }

      /* =========================================================
         RESPONSIVE (inner pages)
      ========================================================= */
      @media (max-width: 1024px) {
        .benefits-grid { grid-template-columns: repeat(2, 1fr); }
      }
      @media (max-width: 900px) {
        .cap-grid { grid-template-columns: repeat(2, 1fr); }
        .benefits-grid { grid-template-columns: repeat(2, 1fr); }
      }
      @media (max-width: 600px) {
        .cap-grid { grid-template-columns: 1fr; }
        .benefits-grid { grid-template-columns: 1fr; }
        .downloads-inner { flex-direction: column; }
        .download-card { width: 100%; }
        .metrics-table thead td,
        .metrics-table tbody td { padding: 14px 16px; font-size: .85rem; }
      }

      /* =========================================================
         SERVICE PAGE
      ========================================================= */
      .support-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-top: 48px;
      }
      .support-card {
        background: var(--clr-bg);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 32px 26px;
        display: flex;
        flex-direction: column;
        gap: 14px;
        transition: box-shadow var(--transition), transform var(--transition);
      }
      .support-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
        background: var(--clr-white);
      }
      .support-card-icon {
        width: 52px; height: 52px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
      }
      .support-card-icon svg { width: 26px; height: 26px; }
      .support-card-icon.blue   { background: linear-gradient(135deg,#e3f2fd,#90caf9); color: var(--clr-primary); }
      .support-card-icon.green  { background: linear-gradient(135deg,#e8f5e9,#a5d6a7); color: #2e7d32; }
      .support-card-icon.orange { background: linear-gradient(135deg,#fff3e0,#ffcc80); color: #e65100; }
      .support-card h4 {
        font-family: var(--font-display);
        font-size: 1rem;
        font-weight: 700;
        color: var(--clr-dark);
      }
      .support-card p {
        font-size: .92rem;
        color: var(--clr-muted);
        line-height: 1.65;
      }
      .support-card a {
        color: var(--clr-accent);
        font-weight: 500;
        transition: color var(--transition);
      }
      .support-card a:hover { color: var(--clr-primary); }

      .centers-section { background: var(--clr-bg); }
      .centers-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-top: 48px;
      }
      .center-card {
        background: var(--clr-white);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 28px 24px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition);
      }
      .center-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
      }
      .center-badge {
        display: inline-block;
        padding: 3px 10px;
        border-radius: 50px;
        font-size: .72rem;
        font-weight: 700;
        letter-spacing: .08em;
        text-transform: uppercase;
        background: linear-gradient(135deg,#e3f2fd,#bbdefb);
        color: var(--clr-primary);
        width: fit-content;
        margin-bottom: 4px;
      }
      .center-card h4 {
        font-size: .95rem;
        font-weight: 700;
        color: var(--clr-dark);
        line-height: 1.3;
      }
      .center-card address {
        font-size: .87rem;
        color: var(--clr-muted);
        font-style: normal;
        line-height: 1.55;
      }
      .center-phone {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        font-size: .9rem;
        font-weight: 600;
        color: var(--clr-accent);
        margin-top: 4px;
        transition: color var(--transition);
      }
      .center-phone:hover { color: var(--clr-primary); }
      .center-phone svg { width: 16px; height: 16px; flex-shrink: 0; }

      @media (max-width: 900px) {
        .support-grid { grid-template-columns: 1fr; }
        .centers-grid { grid-template-columns: repeat(2,1fr); }
      }
      @media (max-width: 600px) {
        .centers-grid { grid-template-columns: 1fr; }
      }

      /* =========================================================
         CONTACT PAGE
      ========================================================= */
      .contact-cards {
        display: grid;
        grid-template-columns: repeat(3,1fr);
        gap: 24px;
        margin-top: 48px;
      }
      .contact-card {
        background: var(--clr-bg);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 30px 24px;
        display: flex;
        flex-direction: column;
        gap: 12px;
        transition: box-shadow var(--transition), transform var(--transition);
      }
      .contact-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
        background: var(--clr-white);
      }
      .contact-card-icon {
        width: 52px; height: 52px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .contact-card-icon svg { width: 24px; height: 24px; }
      .contact-card-icon.blue   { background: linear-gradient(135deg,#e3f2fd,#90caf9); color: var(--clr-primary); }
      .contact-card-icon.green  { background: linear-gradient(135deg,#e8f5e9,#a5d6a7); color: #2e7d32; }
      .contact-card-icon.orange { background: linear-gradient(135deg,#fff3e0,#ffcc80); color: #e65100; }
      .contact-card h4 {
        font-size: .9rem;
        font-weight: 700;
        letter-spacing: .06em;
        text-transform: uppercase;
        color: var(--clr-muted);
      }
      .contact-card p,
      .contact-card > a {
        font-size: .95rem;
        color: var(--clr-text);
        line-height: 1.6;
      }
      .contact-card a { font-weight: 600; color: var(--clr-accent); }
      .contact-card a:hover { color: var(--clr-primary); }

      .contact-layout {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: flex-start;
      }

      /* Form */
      .contact-form-wrap {
        background: var(--clr-bg);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-lg);
        padding: 40px 36px;
      }
      .contact-form-wrap h3 {
        font-family: var(--font-display);
        font-size: 1.4rem;
        font-weight: 800;
        color: var(--clr-dark);
        margin-bottom: 6px;
      }
      .form-subtitle {
        font-size: .92rem;
        color: var(--clr-muted);
        margin-bottom: 28px;
      }
      .form-group {
        display: flex;
        flex-direction: column;
        gap: 6px;
        margin-bottom: 18px;
      }
      .form-group label {
        font-size: .82rem;
        font-weight: 600;
        letter-spacing: .05em;
        text-transform: uppercase;
        color: var(--clr-muted);
      }
      .form-group input,
      .form-group textarea,
      .form-group select {
        font-family: var(--font-body);
        font-size: .95rem;
        color: var(--clr-text);
        background: var(--clr-white);
        border: 1.5px solid var(--clr-border);
        border-radius: var(--radius-sm);
        padding: 12px 16px;
        outline: none;
        transition: border-color var(--transition), box-shadow var(--transition);
        width: 100%;
      }
      .form-group input:focus,
      .form-group textarea:focus,
      .form-group select:focus {
        border-color: var(--clr-accent);
        box-shadow: 0 0 0 3px rgba(25,118,210,.12);
      }
      .form-group textarea { resize: vertical; min-height: 120px; }
      .form-submit { width: 100%; justify-content: center; margin-top: 8px; }
      .form-note {
        font-size: .78rem;
        color: var(--clr-muted);
        margin-top: 12px;
        text-align: center;
        line-height: 1.5;
      }
      .form-success {
        display: none;
        flex-direction: column;
        align-items: center;
        gap: 16px;
        text-align: center;
        padding: 32px 0;
      }
      .form-success svg { width: 56px; height: 56px; color: #2e7d32; }
      .form-success h4 { font-size: 1.2rem; font-weight: 700; color: var(--clr-dark); }
      .form-success p  { font-size: .92rem; color: var(--clr-muted); }

      /* Requisites */
      .requisites-wrap {
        display: flex;
        flex-direction: column;
        gap: 24px;
      }
      .req-block {
        background: var(--clr-white);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 24px;
        box-shadow: var(--shadow-sm);
      }
      .req-block h5,
      .codes-block h5 {
        font-size: .8rem;
        font-weight: 700;
        letter-spacing: .1em;
        text-transform: uppercase;
        color: var(--clr-accent);
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 8px;
      }
      .req-block h5::before,
      .codes-block h5::before {
        content: '';
        display: block;
        width: 14px; height: 2px;
        background: var(--clr-accent);
        border-radius: 2px;
      }
      .req-row {
        display: flex;
        flex-direction: column;
        gap: 10px;
      }
      .req-item { display: flex; gap: 12px; }
      .req-label {
        font-size: .8rem;
        font-weight: 600;
        color: var(--clr-muted);
        min-width: 80px;
        flex-shrink: 0;
        padding-top: 1px;
        line-height: 1.5;
      }
      .req-value {
        font-size: .9rem;
        color: var(--clr-text);
        line-height: 1.55;
      }
      .req-value a { color: var(--clr-accent); font-weight: 600; }
      .req-value a:hover { color: var(--clr-primary); }

      /* IT codes */
      .codes-block {
        background: var(--clr-bg);
        border: 1px solid var(--clr-border);
        border-radius: var(--radius-md);
        padding: 24px;
      }
      .code-row {
        display: flex;
        gap: 12px;
        padding: 12px 0;
        border-bottom: 1px solid var(--clr-border);
      }
      .code-row:last-child { border-bottom: none; padding-bottom: 0; }
      .code-num {
        font-size: .82rem;
        font-weight: 800;
        color: var(--clr-white);
        background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-lt));
        border-radius: var(--radius-sm);
        padding: 4px 10px;
        white-space: nowrap;
        height: fit-content;
        flex-shrink: 0;
        line-height: 1.4;
        margin-top: 1px;
      }
      .code-desc {
        font-size: .85rem;
        color: var(--clr-text);
        line-height: 1.6;
      }

      /* Map */
      .map-wrap {
        width: 100%;
        height: 420px;
        overflow: hidden;
        border-top: 1px solid var(--clr-border);
        border-bottom: 1px solid var(--clr-border);
      }
      .map-wrap iframe {
        width: 100%;
        height: 100%;
        border: 0;
        display: block;
      }

      @media (max-width: 900px) {
        .contact-cards  { grid-template-columns: 1fr 1fr; }
        .contact-layout { grid-template-columns: 1fr; gap: 32px; }
      }
      @media (max-width: 600px) {
        .contact-cards { grid-template-columns: 1fr; }
        .contact-form-wrap { padding: 28px 20px; }
        .map-wrap { height: 300px; }
      }

      /* =========================================================
          ANIMATIONS (on-scroll)
       ========================================================= */
      .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity .7s ease, transform .7s ease;
      }
      .reveal.in-view {
        opacity: 1;
        transform: translateY(0);
      }
      .reveal-delay-1 { transition-delay: .1s; }
      .reveal-delay-2 { transition-delay: .2s; }
      .reveal-delay-3 { transition-delay: .3s; }
   
/* ── Tech stack block ── */
.tech-stack {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(0,0,0,.08);
}
.tech-stack-title {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-muted, #6b7280);
  margin-bottom: 1rem;
}
.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}
.tech-list li {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  background: rgba(13,71,161,.06);
  border: 1px solid rgba(13,71,161,.14);
  border-radius: 6px;
  padding: .35rem .75rem;
  font-size: .82rem;
  font-weight: 500;
  color: var(--clr-text, #374151);
  white-space: nowrap;
}
.tech-list li strong {
  color: var(--clr-primary, #0d47a1);
  font-weight: 700;
}
.tech-note {
  font-size: .78rem;
  color: var(--clr-muted, #6b7280);
  line-height: 1.5;
  margin: 0;
}