:root {
      /* Native Dark Theme */
      --brand-red: #ff1319;
      --brand-red-glow: rgba(255, 19, 25, 0.4);
      --bg-color: #0d0f12;
      --surface-color-1: #161a22;
      --surface-color-2: #1e2430;

      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-inverse: #0f172a;

      --border-color: rgba(255, 255, 255, 0.05);
      --nav-bg: rgba(13, 15, 18, 0.8);
      --nav-bg-scrolled: rgba(13, 15, 18, 0.95);
      --shadow-color: rgba(0, 0, 0, 0.3);

      --font-heading: 'Outfit', sans-serif;
      --font-body: 'Inter', sans-serif;
      --nav-height: 80px;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    [data-theme="light"] {
      /* Light Theme Override */
      --brand-red-glow: rgba(255, 19, 25, 0.15);
      --bg-color: #f8fafc;
      --surface-color-1: #ffffff;
      --surface-color-2: #f1f5f9;

      --text-main: #0f172a;
      --text-muted: #475569;
      --text-inverse: #ffffff;

      --border-color: rgba(0, 0, 0, 0.1);
      --nav-bg: rgba(255, 255, 255, 0.85);
      --nav-bg-scrolled: rgba(255, 255, 255, 0.98);
      --shadow-color: rgba(0, 0, 0, 0.08);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--bg-color);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      transition: background-color 0.3s ease, color 0.3s ease;
    }

    h1,
    h2,
    h3,
    h4,
    .brand-font {
      font-family: var(--font-heading);
      font-weight: 700;
      line-height: 1.2;
      color: var(--text-main);
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    ul {
      list-style: none;
    }

    p {
      color: var(--text-muted);
      font-size: 1.125rem;
      margin-bottom: 1rem;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    .bg-gradient {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      overflow: hidden;
      pointer-events: none;
    }

    .bg-gradient::before {
      content: '';
      position: absolute;
      top: -20%;
      left: -10%;
      width: 50%;
      height: 70%;
      background: radial-gradient(circle, var(--brand-red-glow) 0%, transparent 70%);
      filter: blur(120px);
      opacity: 0.8;
    }

    .text-red {
      color: var(--brand-red) !important;
    }

    .section-title {
      font-size: 2.25rem;
      text-align: center;
      margin-bottom: 1rem;
    }

    .section-subtitle {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 4rem auto;
      font-size: 1.25rem;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.875rem 2rem;
      border-radius: 50px;
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 1.1rem;
      cursor: pointer;
      transition: var(--transition);
      border: 2px solid transparent;
    }

    .btn-primary {
      background-color: var(--brand-red);
      color: white;
      box-shadow: 0 4px 15px rgba(255, 19, 25, 0.3);
    }

    .btn-primary:hover {
      background-color: transparent;
      border-color: var(--brand-red);
      color: var(--brand-red);
      box-shadow: 0 0 20px rgba(255, 19, 25, 0.5);
    }

    .btn-outline {
      background-color: transparent;
      border-color: var(--text-main);
      color: var(--text-main);
    }

    .btn-outline:hover {
      background-color: var(--text-main);
      color: var(--text-inverse);
    }

    .btn-icon {
      background: none;
      border: none;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      padding: 0.5rem;
      border-radius: 50%;
      transition: background 0.3s ease;
    }

    .btn-icon:hover {
      background: var(--surface-color-2);
    }

    /* Nav */
    header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--nav-height);
      display: flex;
      align-items: center;
      background: var(--nav-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }

    header.scrolled {
      height: 70px;
      background: var(--nav-bg-scrolled);
      box-shadow: 0 4px 30px var(--shadow-color);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .logo img {
      height: 40px;
      border-radius: 4px;
    }

    .nav-links {
      display: flex;
      gap: 2.5rem;
      align-items: center;
    }

    .nav-links a {
      font-family: var(--font-heading);
      font-size: 1rem;
      font-weight: 500;
      position: relative;
      transition: color 0.3s ease;
      color: var(--text-main);
    }

    .nav-links a:hover {
      color: var(--brand-red);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -6px;
      left: 0;
      background-color: var(--brand-red);
      transition: width 0.3s ease;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    /* Active-page indicator (added for the multi-page split, mirrors the hover state) */
    .nav-links a.active {
      color: var(--brand-red);
    }

    .nav-links a.active::after {
      width: 100%;
    }

    .nav-toggle {
      display: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }

    section {
      padding: 8rem 0;
      position: relative;
    }

    /* Hero */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: 8rem;
      text-align: center;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      z-index: 10;
    }

    .hero-title {
      font-size: 3.5rem;
      margin-bottom: 2rem;
      letter-spacing: -1px;
    }

    .hero-subtitle {
      font-size: 1.5rem;
      margin-bottom: 3rem;
      color: var(--text-muted);
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
    }

    .pillars-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      margin-top: 5rem;
      z-index: 10;
    }

    .pillar-card {
      background: var(--surface-color-1);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 2.5rem 2rem;
      text-align: left;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .pillar-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--brand-red);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.4s ease;
    }

    .pillar-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 10px 40px var(--shadow-color);
      background: var(--surface-color-2);
    }

    .pillar-card:hover::before {
      transform: scaleX(1);
    }

    .pillar-card h3 {
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }

    /* Services */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 2.5rem;
    }

    .service-card {
      background: linear-gradient(145deg, var(--surface-color-1), var(--surface-color-2));
      border: 1px solid var(--border-color);
      padding: 3rem 2rem;
      border-radius: 20px;
      transition: var(--transition);
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(255, 19, 25, 0.3);
      box-shadow: 0 20px 40px var(--shadow-color);
    }

    .service-card h3 {
      font-size: 1.75rem;
      margin-bottom: 1.5rem;
    }

    .service-list li {
      margin-bottom: 1rem;
      padding-left: 1.5rem;
      position: relative;
      color: var(--text-muted);
    }

    .service-list li::before {
      content: '→';
      position: absolute;
      left: 0;
      top: 0;
      color: var(--brand-red);
      font-weight: bold;
    }

    .service-list li strong {
      color: var(--text-main);
    }

    /* Solutions */
    #solutions {
      background-color: var(--surface-color-1);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .solution-item {
      display: flex;
      align-items: center;
      gap: 4rem;
      margin-bottom: 6rem;
    }

    .solution-item:last-child {
      margin-bottom: 0;
    }

    .solution-item:nth-child(even) {
      flex-direction: row-reverse;
    }

    .solution-content {
      flex: 1;
    }

    .solution-content h3 {
      font-size: 2.25rem;
      margin-bottom: 1.5rem;
    }

    .solution-features {
      margin-top: 2rem;
    }

    .solution-features li {
      background: var(--surface-color-2);
      padding: 1rem 1.5rem;
      border-radius: 8px;
      margin-bottom: 1rem;
      border-left: 2px solid var(--brand-red);
    }

    .solution-features li strong {
      color: var(--text-main);
      display: block;
      margin-bottom: 0.25rem;
    }

    .solution-visual {
      flex: 1;
      height: 400px;
      background: linear-gradient(135deg, var(--surface-color-2), var(--bg-color));
      border-radius: 20px;
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: hidden;
    }

    .solution-visual::after {
      content: '';
      position: absolute;
      width: 150px;
      height: 150px;
      background: var(--brand-red);
      filter: blur(80px);
      opacity: 0.2;
    }

    .solution-number {
      font-size: 10rem;
      font-family: var(--font-heading);
      font-weight: 800;
      color: var(--border-color);
    }

    /* Products */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .product-card {
      text-align: center;
      padding: 4rem 2rem;
      background: var(--surface-color-1);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      position: relative;
      transition: var(--transition);
      z-index: 1;
    }

    .product-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at top, rgba(255, 19, 25, 0.05), transparent 70%);
      border-radius: 20px;
      z-index: -1;
      opacity: 0;
      transition: var(--transition);
    }

    .product-card:hover {
      transform: translateY(-10px);
    }

    .product-card:hover::before {
      opacity: 1;
    }

    .product-icon {
      width: 70px;
      height: 70px;
      background: rgba(255, 19, 25, 0.1);
      color: var(--brand-red);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 2rem auto;
      font-size: 1.5rem;
      font-weight: 700;
      font-family: var(--font-heading);
    }

    .product-card h3 {
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }

    /* About */
    #about {
      background-color: var(--surface-color-1);
      border-top: 1px solid var(--border-color);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
    }

    .leadership-list {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    .leader-card {
      background: var(--surface-color-2);
      padding: 1.5rem;
      border-radius: 12px;
      border-left: 4px solid var(--brand-red);
      border: 1px solid var(--border-color);
      border-left-width: 4px;
    }

    .leader-card h4 {
      font-size: 1.25rem;
      margin-bottom: 0.5rem;
    }

    .leader-card span {
      color: var(--brand-red);
      font-size: 0.9rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      display: block;
      margin-bottom: 0.5rem;
    }

    /* Careers */
    #careers {
      background: linear-gradient(to bottom, var(--surface-color-2), var(--bg-color));
      text-align: center;
      padding: 8rem 0;
    }

    .careers-content {
      max-width: 800px;
      margin: 0 auto;
    }

    .jobs-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
      margin: 3rem 0;
    }

    .job-card {
      background: var(--surface-color-1);
      padding: 1.5rem;
      border-radius: 12px;
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 1.2rem;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      color: var(--text-main);
    }

    .job-card:hover {
      border-color: var(--brand-red);
      background: rgba(255, 19, 25, 0.05);
    }

    /* Footer */
    footer {
      background: var(--surface-color-1);
      padding: 4rem 0;
      border-top: 1px solid var(--border-color);
      text-align: center;
    }

    .footer-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2rem;
    }

    .footer-logo img {
      height: 40px;
      opacity: 0.8;
      filter: grayscale(100%) invert(1);
      transition: var(--transition);
    }

    [data-theme="light"] .footer-logo img {
      filter: grayscale(100%);
    }

    /* Basic invert for dark mode if logo is dark */
    .footer-logo img:hover {
      filter: grayscale(0%);
      opacity: 1;
    }

    .footer-bottom {
      margin-top: 2rem;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .fade-up {
      opacity: 0;
      transform: translateY(40px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }

    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .four-col-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }

    @media (max-width: 992px) {
      .four-col-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .hero-title {
        font-size: 3.5rem;
      }

      .pillars-grid,
      .about-grid,
      .solution-item,
      .products-grid {
        grid-template-columns: 1fr;
      }

      .solution-item:nth-child(even) {
        flex-direction: column;
      }

      .solution-item {
        flex-direction: column;
        gap: 2rem;
      }

      .solution-visual {
        width: 100%;
        height: 300px;
      }
    }

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

      .nav-links {
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: var(--surface-color-1);
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
        padding: 2rem 0;
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
      }

      .nav-links.active {
        transform: translateY(0);
        opacity: 1;
      }

      .nav-toggle {
        display: block;
      }

      .hero-title {
        font-size: 2.75rem;
      }

      .hero-actions {
        flex-direction: column;
      }

      .jobs-grid {
        grid-template-columns: 1fr;
      }
    }

    .job-card {
      cursor: pointer;
      text-align: left;
    }

    .job-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: color 0.3s;
    }

    .job-card:hover .job-card-header {
      color: var(--brand-red);
    }

    .job-expand-icon {
      transition: transform 0.3s ease;
    }

    .job-card.active .job-expand-icon {
      transform: rotate(180deg);
    }

    .job-details {
      max-height: 0;
      overflow: hidden;
      opacity: 0;
      transition: all 0.4s ease;
      text-align: left;
      font-family: var(--font-body);
      font-weight: 400;
      font-size: 0.95rem;
    }

    .job-card.active .job-details {
      max-height: 2500px;
      opacity: 1;
      margin-top: 1.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--border-color);
    }

    .jd-section {
      margin-top: 1.25rem;
    }

    .jd-section h5 {
      font-size: 1.1rem;
      margin-bottom: 0.5rem;
      font-family: var(--font-heading);
      color: var(--text-main);
    }

    .jd-section ul {
      padding-left: 1.5rem;
      margin-top: 0.5rem;
    }

    .jd-section li {
      margin-bottom: 0.5rem;
      color: var(--text-muted);
    }

    .jd-section p {
      color: var(--text-muted);
    }