/* Homepage styles (extracted from index.html) */
/* ===== CSS Variables ===== */
    :root {
      --primary: #1B2F4E;
      --primary-light: #2D4A72;
      --accent: #E84C1E;
      --accent-hover: #C73D12;
      --amber: #F5A623;
      --text: #1A1A1A;
      --text-muted: #6B7280;
      --text-light: #9CA3AF;
      --bg: #FFFFFF;
      --bg-light: #F8FAFC;
      --bg-dark: #0F1923;
      --border: #E5E7EB;
      --shadow: 0 4px 24px rgba(0,0,0,0.08);
      --shadow-lg: 0 8px 48px rgba(0,0,0,0.12);
      --radius: 6px;
      --radius-lg: 12px;
      --transition: 0.25s ease;
      --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
      --container: 1280px;
      --nav-h: 72px;
    }

    /* ===== Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
      font-family: var(--font-sans);
      font-size: 15px;
      line-height: 1.65;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    img { display: block; max-width: 100%; height: auto; }
    a { color: inherit; text-decoration: none; }
    ul { list-style: none; }
    button { cursor: pointer; border: none; background: none; font: inherit; }

    /* ===== Layout ===== */
    .container {
      width: 100%;
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 24px;
    }
    .section { padding: 80px 0; }
    .section--alt { background: var(--bg-light); }
    .section--dark { background: var(--primary); color: #fff; }

    /* ===== Typography ===== */
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: clamp(26px, 4vw, 40px);
      font-weight: 800;
      line-height: 1.2;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .section--dark .section-title { color: #fff; }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 560px;
      line-height: 1.7;
    }
    .section--dark .section-desc { color: rgba(255,255,255,0.7); }
    .section-header { margin-bottom: 48px; }
    .section-header--center { text-align: center; }
    .section-header--center .section-desc { margin: 0 auto; }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.02em;
      transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
      white-space: nowrap;
    }
    .btn:hover { transform: translateY(-1px); }
    .btn--primary {
      background: var(--accent);
      color: #fff;
    }
    .btn--primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px rgba(232,76,30,0.35); }
    .btn--outline {
      background: transparent;
      color: #fff;
      border: 2px solid rgba(255,255,255,0.5);
    }
    .btn--outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
    .btn--outline-dark {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
    }
    .btn--outline-dark:hover { background: var(--primary); color: #fff; }

    /* ===== Header / Nav ===== */
    #header {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      height: var(--nav-h);
      background: rgba(15,25,35,0.96);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      transition: box-shadow var(--transition);
    }
    #header.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.3); }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--nav-h);
    }
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .nav-logo img { height: 48px; width: auto; }
    .nav-logo-text {
      display: flex;
      flex-direction: column;
    }
    .nav-logo-text .name {
      font-size: 15px;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.02em;
      line-height: 1;
    }
    .nav-logo-text .slogan {
      font-size: 11px;
      color: rgba(255,255,255,0.5);
      letter-spacing: 0.05em;
      margin-top: 3px;
      text-transform: uppercase;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 500;
      color: rgba(255,255,255,0.75);
      border-radius: 4px;
      transition: color var(--transition), background var(--transition);
      white-space: nowrap;
    }
    .nav-link:hover, .nav-link.active { color: #fff; background: rgba(255,255,255,0.1); }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .nav-phone {
      font-size: 14px;
      font-weight: 700;
      color: var(--amber);
      letter-spacing: 0.02em;
    }
    .nav-phone span { font-size: 11px; font-weight: 400; color: rgba(255,255,255,0.5); display: block; }
    .nav-lang {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: rgba(255,255,255,0.5);
    }
    .nav-lang a { color: rgba(255,255,255,0.5); transition: color var(--transition); }
    .nav-lang a:hover, .nav-lang a.current { color: #fff; }
    .nav-lang span { opacity: 0.4; }

    /* Mobile menu toggle */
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 8px;
      border-radius: 4px;
    }
    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: #fff;
      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); }

    /* Mobile nav drawer */
    .nav-drawer {
      display: none;
      position: fixed;
      top: var(--nav-h);
      left: 0; right: 0;
      background: rgba(15,25,35,0.98);
      backdrop-filter: blur(20px);
      padding: 16px 0 32px;
      z-index: 999;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .nav-drawer.open { display: block; }
    .nav-drawer .nav-link {
      display: block;
      padding: 14px 24px;
      font-size: 16px;
      border-radius: 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .nav-drawer-contact {
      padding: 20px 24px 0;
    }
    .nav-drawer-contact a {
      display: block;
      font-size: 22px;
      font-weight: 800;
      color: var(--amber);
      margin-bottom: 8px;
    }
    .nav-drawer-contact p { font-size: 13px; color: rgba(255,255,255,0.5); }

    /* ===== Hero ===== */
    #hero {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: var(--bg-dark);
      overflow: hidden;
      padding-top: var(--nav-h);
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('../images/etching_machine.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(15,25,35,0.95) 0%, rgba(27,47,78,0.85) 50%, rgba(15,25,35,0.7) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 720px;
    }
    .hero-eyebrow {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 24px;
    }
    .hero-eyebrow-line {
      width: 40px;
      height: 2px;
      background: var(--accent);
    }
    .hero-eyebrow-text {
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--accent);
    }
    .hero-title {
      font-size: clamp(36px, 6vw, 68px);
      font-weight: 900;
      line-height: 1.1;
      color: #fff;
      margin-bottom: 24px;
      letter-spacing: -0.03em;
    }
    .hero-title em {
      font-style: normal;
      color: var(--amber);
    }
    .hero-desc {
      font-size: 18px;
      color: rgba(255,255,255,0.7);
      line-height: 1.7;
      margin-bottom: 40px;
      max-width: 540px;
    }
    .hero-cta {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .hero-stats {
      display: flex;
      gap: 40px;
      margin-top: 64px;
      padding-top: 40px;
      border-top: 1px solid rgba(255,255,255,0.12);
    }
    .hero-stat-num {
      font-size: 36px;
      font-weight: 900;
      color: #fff;
      letter-spacing: -0.03em;
      line-height: 1;
    }
    .hero-stat-num span { color: var(--accent); }
    .hero-stat-label {
      font-size: 13px;
      color: rgba(255,255,255,0.5);
      margin-top: 6px;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    .hero-scroll {
      position: absolute;
      bottom: 40px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      color: rgba(255,255,255,0.4);
      font-size: 11px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      z-index: 2;
    }
    .hero-scroll-line {
      width: 1px;
      height: 48px;
      background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.4));
      animation: scrollPulse 2s ease-in-out infinite;
    }
    @keyframes scrollPulse {
      0%, 100% { opacity: 0.4; transform: scaleY(1); }
      50% { opacity: 1; transform: scaleY(1.1); }
    }

    /* ===== Stats Banner ===== */
    #stats {
      background: var(--primary);
      padding: 48px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .stat-item {
      background: var(--primary);
      padding: 32px 24px;
      text-align: center;
      position: relative;
    }
    .stat-item::after {
      content: '';
      position: absolute;
      top: 20%;
      right: 0;
      height: 60%;
      width: 1px;
      background: rgba(255,255,255,0.08);
    }
    .stat-item:last-child::after { display: none; }
    .stat-number {
      font-size: 44px;
      font-weight: 900;
      color: #fff;
      letter-spacing: -0.04em;
      line-height: 1;
    }
    .stat-number span { color: var(--accent); }
    .stat-unit {
      font-size: 18px;
      font-weight: 900;
      color: var(--amber);
    }
    .stat-label {
      font-size: 13px;
      color: rgba(255,255,255,0.55);
      margin-top: 8px;
      letter-spacing: 0.04em;
    }

    /* ===== Product Categories ===== */
    .cat-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .cat-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--primary);
      aspect-ratio: 4/3;
      group: true;
    }
    .cat-card-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0.4;
      transition: opacity var(--transition), transform 0.4s ease;
    }
    .cat-card:hover .cat-card-bg {
      opacity: 0.55;
      transform: scale(1.05);
    }
    .cat-card-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(15,25,35,0.92) 0%, rgba(15,25,35,0.3) 60%, transparent 100%);
    }
    .cat-card-body {
      position: absolute;
      bottom: 0; left: 0; right: 0;
      padding: 28px;
    }
    .cat-card-icon {
      width: 44px;
      height: 44px;
      background: rgba(232,76,30,0.15);
      border: 1px solid rgba(232,76,30,0.3);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
      font-size: 20px;
    }
    .cat-card-name {
      font-size: 20px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 6px;
    }
    .cat-card-desc {
      font-size: 13px;
      color: rgba(255,255,255,0.6);
      margin-bottom: 16px;
      line-height: 1.5;
    }
    .cat-card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      transition: gap var(--transition);
    }
    .cat-card:hover .cat-card-link { gap: 10px; }
    .cat-card-link::after {
      content: '→';
      font-size: 14px;
    }

    /* ===== Products Grid ===== */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .product-card {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: #fff;
      transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: var(--accent);
    }
    .product-card-img {
      aspect-ratio: 4/3;
      overflow: hidden;
      background: var(--bg-light);
    }
    .product-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-card:hover .product-card-img img { transform: scale(1.06); }
    .product-card-body { padding: 16px; }
    .product-card-cat {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 6px;
    }
    .product-card-name {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.35;
      margin-bottom: 8px;
    }
    .product-card-name-en {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .product-card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 12px;
      border-top: 1px solid var(--border);
    }
    .product-card-tags {
      display: flex;
      gap: 4px;
      flex-wrap: wrap;
    }
    .tag {
      padding: 3px 8px;
      background: var(--bg-light);
      border-radius: 4px;
      font-size: 11px;
      color: var(--text-muted);
    }
    .product-card-arrow {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      background: var(--bg-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      font-size: 14px;
      transition: background var(--transition), color var(--transition);
      flex-shrink: 0;
    }
    .product-card:hover .product-card-arrow {
      background: var(--accent);
      color: #fff;
    }

    /* ===== Applications ===== */
    .app-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .app-card {
      padding: 32px 28px;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: #fff;
      transition: box-shadow var(--transition), border-color var(--transition);
      position: relative;
      overflow: hidden;
    }
    .app-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 3px;
      background: var(--accent);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.3s ease;
    }
    .app-card:hover { box-shadow: var(--shadow); border-color: rgba(232,76,30,0.2); }
    .app-card:hover::before { transform: scaleX(1); }
    .app-icon {
      font-size: 32px;
      margin-bottom: 16px;
    }
    .app-name {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .app-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ===== About ===== */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 80px;
      align-items: center;
    }
    .about-img-wrap {
      position: relative;
    }
    .about-img-main {
      border-radius: var(--radius-lg);
      overflow: hidden;
      aspect-ratio: 4/3;
      box-shadow: var(--shadow-lg);
    }
    .about-img-main img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .about-img-badge {
      position: absolute;
      bottom: -20px;
      right: -20px;
      background: var(--accent);
      color: #fff;
      padding: 20px 24px;
      border-radius: var(--radius-lg);
      box-shadow: 0 8px 32px rgba(232,76,30,0.35);
      text-align: center;
    }
    .about-img-badge .num {
      font-size: 36px;
      font-weight: 900;
      line-height: 1;
    }
    .about-img-badge .label {
      font-size: 12px;
      margin-top: 4px;
      opacity: 0.85;
    }
    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 32px;
    }
    .about-feature {
      display: flex;
      gap: 12px;
      align-items: flex-start;
    }
    .about-feature-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: rgba(232,76,30,0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
    }
    .about-feature-text .label {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
    }
    .about-feature-text .desc {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 2px;
    }
    .about-cta { margin-top: 36px; display: flex; gap: 16px; align-items: center; }

    /* ===== Contact CTA ===== */
    #contact-cta {
      background: linear-gradient(135deg, var(--primary) 0%, #0F1923 100%);
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }
    #contact-cta::before {
      content: '';
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(232,76,30,0.12), transparent 70%);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 48px;
      align-items: center;
    }
    .cta-phones {
      display: flex;
      gap: 40px;
      margin-top: 24px;
    }
    .cta-phone-item .label {
      font-size: 12px;
      color: rgba(255,255,255,0.5);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 4px;
    }
    .cta-phone-item .num {
      font-size: 24px;
      font-weight: 800;
      color: var(--amber);
      letter-spacing: -0.01em;
    }
    .cta-contact-card {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-lg);
      padding: 32px;
      min-width: 280px;
    }
    .cta-contact-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 20px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
    }
    .contact-item:last-child { margin-bottom: 0; }
    .contact-item-icon {
      width: 32px;
      height: 32px;
      background: rgba(232,76,30,0.15);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex-shrink: 0;
    }
    .contact-item-text .label {
      font-size: 11px;
      color: rgba(255,255,255,0.45);
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    .contact-item-text .value {
      font-size: 14px;
      color: rgba(255,255,255,0.85);
      margin-top: 2px;
      line-height: 1.4;
    }
    .contact-item-text a { color: var(--amber); }
    .contact-item-text a:hover { text-decoration: underline; }

    /* ===== Gallery Strip ===== */
    #gallery {
      padding: 48px 0;
      background: var(--bg-dark);
      overflow: hidden;
    }
    .gallery-track {
      display: flex;
      gap: 12px;
      animation: galleryScroll 40s linear infinite;
      width: max-content;
    }
    .gallery-track:hover { animation-play-state: paused; }
    @keyframes galleryScroll {
      from { transform: translateX(0); }
      to { transform: translateX(-50%); }
    }
    .gallery-item {
      width: 180px;
      height: 120px;
      border-radius: 8px;
      overflow: hidden;
      flex-shrink: 0;
      border: 1px solid rgba(255,255,255,0.06);
    }
    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.7;
      transition: opacity var(--transition);
    }
    .gallery-item:hover img { opacity: 1; }

    /* ===== Footer ===== */
    #footer {
      background: #080E16;
      padding: 64px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .footer-brand img { height: 44px; margin-bottom: 16px; }
    .footer-brand p {
      font-size: 14px;
      color: rgba(255,255,255,0.45);
      line-height: 1.7;
      max-width: 280px;
      margin-bottom: 24px;
    }
    .footer-social {
      display: flex;
      gap: 8px;
    }
    .footer-social a {
      width: 36px;
      height: 36px;
      border-radius: 6px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      color: rgba(255,255,255,0.5);
      transition: background var(--transition), color var(--transition);
    }
    .footer-social a:hover { background: var(--accent); color: #fff; border-color: transparent; }
    .footer-col h5 {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: #fff;
      margin-bottom: 20px;
    }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a {
      font-size: 14px;
      color: rgba(255,255,255,0.45);
      transition: color var(--transition);
    }
    .footer-links a:hover { color: #fff; }
    .footer-bottom {
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom p {
      font-size: 13px;
      color: rgba(255,255,255,0.3);
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }
    .footer-bottom-links a {
      font-size: 13px;
      color: rgba(255,255,255,0.3);
      transition: color var(--transition);
    }
    .footer-bottom-links a:hover { color: rgba(255,255,255,0.6); }

    /* ===== Breadcrumb / Back to top ===== */
    #back-top {
      position: fixed;
      bottom: 28px;
      right: 28px;
      width: 44px;
      height: 44px;
      background: var(--accent);
      color: #fff;
      border-radius: 8px;
      display: none;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      box-shadow: 0 4px 16px rgba(232,76,30,0.4);
      cursor: pointer;
      z-index: 99;
      transition: transform var(--transition), opacity var(--transition);
    }
    #back-top.visible { display: flex; }
    #back-top:hover { transform: translateY(-3px); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .nav-menu { display: none; }
      .nav-toggle { display: flex; }
      .nav-phone .num { display: none; }
      .cat-grid { grid-template-columns: repeat(2, 1fr); }
      .products-grid { grid-template-columns: repeat(3, 1fr); }
      .app-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; gap: 48px; }
      .about-img-badge { bottom: -10px; right: 10px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      :root { --nav-h: 60px; }
      .section { padding: 56px 0; }
      .container { padding: 0 16px; }
      .cat-grid { grid-template-columns: 1fr; }
      .products-grid { grid-template-columns: repeat(2, 1fr); }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .stat-item::after { display: none; }
      .app-grid { grid-template-columns: 1fr; }
      .cta-grid { grid-template-columns: 1fr; }
      .cta-phones { flex-direction: column; gap: 16px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .hero-stats { flex-direction: column; gap: 24px; }
      .about-features { grid-template-columns: 1fr; }
      .nav-logo-text .name { font-size: 13px; }
      .nav-logo-text .slogan { display: none; }
    }
    @media (max-width: 480px) {
      .products-grid { grid-template-columns: 1fr; }
      .hero-cta { flex-direction: column; align-items: flex-start; }
      .about-cta { flex-direction: column; align-items: flex-start; }
    }