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

      body {
        font-family:
          "Lato",
          -apple-system,
          BlinkMacSystemFont,
          "Segoe UI",
          sans-serif;
        background-color: #ffffff;
        color: #1a2c3e;
        line-height: 1.5;
        font-weight: 400;
        overflow-x: hidden;
      }

      /* Loading indicator for smooth transitions - subtle progress bar */
      .page-loading {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background: linear-gradient(90deg, #c62828, #ff6b6b, #c62828);
        z-index: 10000;
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.3s ease;
        pointer-events: none;
      }
      .page-loading.active {
        transform: scaleX(1);
      }

      /* Fade transition for content */
      .page-content {
        transition: opacity 0.25s ease-in-out;
        opacity: 1;
      }
      .page-content.fade-out {
        opacity: 0;
      }

      .container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 24px;
      }

      /* Brand colors from logo: blue, red, white */
      :root {
        --primary-blue: #0a2b5e;
        --primary-red: #c62828;
        --white: #ffffff;
        --light-bg: #f8fafc;
        --border-light: #e9eef3;
        --text-dark: #1e2f3e;
        --text-muted: #4a5b6e;
        --card-shadow:
          0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.02);
        --card-hover-shadow: 0 30px 45px -18px rgba(10, 43, 94, 0.15);
      }

      h1,
      h2,
      h3,
      h4 {
        font-family: "Montserrat", sans-serif;
        font-weight: 600;
        letter-spacing: -0.01em;
      }

      h2 {
        font-size: 2rem;
        margin-bottom: 1.5rem;
        font-weight: 700;
        color: var(--primary-blue);
        letter-spacing: -0.02em;
        border-left: 4px solid var(--primary-red);
        padding-left: 1rem;
      }

      /* UNIFIED NAVBAR */
      .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem 24px;
        max-width: 1340px;
        margin: 0 auto;
        background: var(--white);
        border-bottom: 1px solid var(--border-light);
        flex-wrap: wrap;
        gap: 1rem;
      }

      .logo {
        font-family: "Montserrat", sans-serif;
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--primary-blue);
      }

      .logo span {
        font-weight: 800;
        color: var(--primary-red);
      }

      .nav-links {
        display: flex;
        gap: 1.8rem;
        align-items: center;
        flex-wrap: wrap;
      }

      .nav-item {
        position: relative;
      }

      .nav-links > a,
      .nav-item > a {
        font-family: "Montserrat", sans-serif;
        text-decoration: none;
        color: var(--text-dark);
        font-weight: 500;
        font-size: 0.85rem;
        transition: color 0.2s;
        text-transform: uppercase;
        letter-spacing: 0.3px;
        display: inline-block;
        padding: 0.5rem 0;
        cursor: pointer;
      }

      .nav-links > a:hover,
      .nav-item > a:hover,
      .nav-links > a.active,
      .nav-item > a.active {
        color: var(--primary-red);
      }

      /* Dropdown Menu */
      .dropdown-menu {
        position: absolute;
        top: 100%;
        left: 0;
        background: var(--white);
        min-width: 280px;
        border-radius: 12px;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        border: 1px solid var(--border-light);
        opacity: 0;
        visibility: hidden;
        transition:
          opacity 0.2s ease,
          visibility 0.2s ease;
        z-index: 1000;
      }

      .nav-item:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
      }

      .dropdown-menu a {
        display: block;
        padding: 0.75rem 1.2rem;
        font-size: 0.8rem;
        text-transform: none;
        border-bottom: 1px solid var(--border-light);
        color: var(--text-dark);
        text-decoration: none;
        font-family: "Montserrat", sans-serif;
        transition: color 0.2s;
        cursor: pointer;
      }

      .dropdown-menu a:last-child {
        border-bottom: none;
      }

      .dropdown-menu a:hover {
        color: var(--primary-red);
        background: rgba(198, 40, 40, 0.05);
      }

      /* Main Products Grid */
      .main-products-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 2rem;
        margin: 2rem 0;
      }

      .main-product-card {
        background: var(--white);
        border: 1px solid var(--border-light);
        border-radius: 12px;
        overflow: hidden;
        transition: all 0.3s ease;
        box-shadow: var(--card-shadow);
        cursor: pointer;
        text-decoration: none;
        display: block;
        color: inherit;
      }

      .main-product-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--card-hover-shadow);
        border-color: var(--primary-red);
      }

      .main-product-image {
        height: 260px;
        background: linear-gradient(135deg, #eef2fa, #e2e8f2);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 4.5rem;
        color: var(--primary-red);
      }

      .main-product-info {
        padding: 1.5rem;
        text-align: center;
      }

      .main-product-info h3 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--primary-blue);
        margin-bottom: 0.5rem;
      }

      .main-product-info p {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.4;
      }

      /* Category Header */
      .category-header {
        background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
        padding: 2rem;
        margin: 2rem 0;
      }

      .category-header h1 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary-blue);
        margin-bottom: 1rem;
      }

      .category-header p {
        font-size: 1rem;
        line-height: 1.6;
        color: var(--text-dark);
        margin-bottom: 1rem;
      }

      /* Sub Products Grid */
      .sub-products-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 2rem;
        margin: 2rem 0;
      }

      .sub-product-card {
        background: var(--white);
        border: 1px solid var(--border-light);
        border-radius: 12px;
        overflow: hidden;
        transition: all 0.3s ease;
        box-shadow: var(--card-shadow);
        cursor: pointer;
      }

      .sub-product-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--card-hover-shadow);
        border-color: rgba(198, 40, 40, 0.3);
      }

      .sub-product-image {
        height: 270px;
        background: linear-gradient(135deg, #eef2fa, #e2e8f2);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 3rem;
        color: var(--primary-red);
      }

      .sub-product-info {
        padding: 1.2rem;
      }

      .sub-product-info h4 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--primary-blue);
        margin-bottom: 0.5rem;
      }

      .sub-product-info p {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.4;
      }

      /* Push Up Overlay */
      .product-overlay {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 2000;
        display: flex;
        justify-content: center;
        align-items: flex-end;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.8s ease;
      }

      .product-overlay.active {
        opacity: 1;
        visibility: visible;
      }

      .overlay-container {
        background: white;
        width: 100%;
        transform: translateY(100%);
        transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
        height: 90vh;
        overflow-y: hidden;
        box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.2);
      }

      .product-overlay.active .overlay-container {
        transform: translateY(0);
      }

      .overlay-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1.2rem 1.5rem;
        border-bottom: 1px solid var(--border-light);
        background: white;
        position: sticky;
        top: 0;
        z-index: 10;
      }

      .overlay-header h3 {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--primary-blue);
      }

      .close-overlay {
        font-size: 1.6rem;
        cursor: pointer;
        color: var(--text-muted);
        transition: 0.2s;
      }

      .close-overlay:hover {
        color: var(--primary-red);
      }

      .overlay-body {
        padding: 2rem;
        display: flex;
        gap: 2rem;
        flex-wrap: wrap;
      }

      .overlay-left {
        flex: 0 0 400px;
        max-width: 400px;
      }

      .overlay-icon {
        background: linear-gradient(135deg, #eef2fa, #e2e8f2);
        border-radius: 20px;
        width: 100%;
        height: 380px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 4rem;
        color: var(--primary-red);
        background-size: cover;
        background-position: center;
      }

      .overlay-right {
        flex: 1;
        min-width: 300px;
      }

      .overlay-desc {
        color: var(--text-dark);
        line-height: 1.7;
        margin-bottom: 2rem;
        font-size: 1rem;
      }

      .overlay-materials {
        background: var(--light-bg);
        border-radius: 20px;
        padding: 1.5rem;
      }

      .overlay-materials h4 {
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--primary-blue);
      }

      .overlay-materials ul {
        list-style: disc;
        padding-left: 1.5rem;
        display: block;
      }

      .overlay-materials li {
        padding: 0.4rem 0;
        font-size: 0.9rem;
        color: var(--text-dark);
      }

      /* Back Button */
      .back-button {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: transparent;
        border: 1px solid var(--primary-red);
        color: var(--primary-red);
        padding: 0.6rem 1.2rem;
        border-radius: 40px;
        font-family: "Montserrat", sans-serif;
        font-weight: 600;
        font-size: 0.85rem;
        cursor: pointer;
        text-decoration: none;
        margin: 1rem 0;
        transition: 0.2s;
      }

      .back-button:hover {
        background: var(--primary-red);
        color: white;
      }

      /* Footer */
      footer {
        background: #0a2540;
        color: #eef2ff;
        padding: 3rem 24px 10px;
        margin-top: 3rem;
        border-top: 4px solid var(--primary-red);
      }

      .footer-content {
        max-width: 1280px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
      }

      .footer-col h4 {
        color: white;
        font-size: 1.1rem;
        font-weight: 700;
        margin-bottom: 1.2rem;
        letter-spacing: 0.5px;
      }

      .footer-col p {
        font-size: 0.85rem;
        line-height: 1.6;
        color: #cddcec;
        margin-bottom: 0.5rem;
      }

      .footer-col .quote {
        font-style: italic;
        margin-top: 0.8rem;
        font-size: 0.85rem;
        color: #bdd3ec;
        border-left: 2px solid var(--primary-red);
        padding-left: 1rem;
      }

      .footer-links {
        display: flex;
        flex-direction: column;
        gap: 0.6rem;
      }

      .footer-links a {
        font-family: "Montserrat", sans-serif;
        color: #cddcec;
        text-decoration: none;
        font-size: 0.8rem;
        transition: color 0.2s;
        cursor: pointer;
      }

      .footer-links a:hover {
        color: var(--primary-red);
      }

      .contact-info {
        display: flex;
        flex-direction: column;
        gap: 0.6rem;
      }

      .contact-info p {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 0.8rem;
        color: #cddcec;
      }

      .contact-info i {
        width: 20px;
        color: var(--primary-red);
      }

      .footer-social {
        display: flex;
        gap: 1rem;
        margin-top: 1rem;
      }

      .footer-social a {
        width: 36px;
        height: 36px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #cddcec;
        font-size: 1rem;
        transition: all 0.2s;
        text-decoration: none;
      }

      .footer-social a:hover {
        background: var(--primary-red);
        color: white;
      }

      .copyright {
        grid-column: span 4;
        text-align: center;
        padding-top: 2rem;
        margin-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 0.7rem;
        color: #b9cfec;
      }

      /* Lazy load image effect */
      img.lazy {
        opacity: 0;
        transition: opacity 0.3s ease;
      }
      img.lazy.loaded {
        opacity: 1;
      }

      @media (max-width: 992px) {
        .footer-content {
          grid-template-columns: repeat(2, 1fr);
          gap: 2rem;
        }
        .copyright {
          grid-column: span 2;
        }
      }

      @media (max-width: 768px) {
        .container {
          padding: 0 20px;
        }
        .navbar {
          flex-direction: column;
          text-align: center;
        }
        .nav-links {
          justify-content: center;
          gap: 1rem;
          flex-wrap: wrap;
        }
        .dropdown-menu {
          position: static;
          box-shadow: none;
          opacity: 1;
          visibility: visible;
          transform: none;
          display: none;
          background: var(--light-bg);
          margin-top: 0.5rem;
        }
        .nav-item:hover .dropdown-menu {
          display: block;
        }
        .main-products-grid {
          grid-template-columns: 1fr;
        }
        .sub-products-grid {
          grid-template-columns: 1fr;
        }
        .overlay-container {
          max-height: 80vh;
        }
        .overlay-body {
          flex-direction: column;
          padding: 1.5rem;
        }
        .overlay-left {
          flex: 1;
          max-width: 100%;
        }
        .overlay-icon {
          height: 300px;
        }
        .overlay-right {
          flex: 1;
          min-width: 100%;
        }
        .footer-content {
          grid-template-columns: 1fr;
          gap: 2.5rem;
          text-align: left;
        }
        .footer-col {
          padding: 0;
        }
        .footer-col .quote {
          padding-left: 0.8rem;
          font-size: 0.9rem;
          line-height: 1.7;
          margin-top: 1rem;
          word-wrap: break-word;
          overflow-wrap: break-word;
        }
        .footer-links {
          align-items: flex-start;
        }
        .contact-info p {
          justify-content: flex-start;
          text-align: left;
          word-wrap: break-word;
          overflow-wrap: break-word;
        }
        .footer-social {
          justify-content: flex-start;
        }
        .copyright {
          grid-column: span 1;
          text-align: center;
          padding-top: 1.5rem;
        }
      }

      @media (max-width: 480px) {
        .container {
          padding: 0 16px;
        }
        .overlay-body {
          padding: 1rem;
        }
        footer {
          padding: 2rem 16px 10px;
        }
        .footer-content {
          gap: 2rem;
        }
        .footer-col h4 {
          font-size: 1rem;
        }
        .footer-col p, .contact-info p {
          font-size: 0.8rem;
        }
        .footer-col .quote {
          font-size: 0.85rem;
        }
      }

      @media (max-width: 375px) {
        .container {
          padding: 0 12px;
        }
        footer {
          padding: 1.5rem 12px 10px;
        }
        .footer-col .quote {
          font-size: 0.8rem;
          line-height: 1.6;
        }
      }