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

    body {
      font-family: 'Inter', sans-serif;
      background: #0b0f1c;
      color: #eef2ff;
      line-height: 1.5;
      overflow-x: hidden;
    }

    /* smooth scroll */
    html {
      scroll-behavior: smooth;
    }

    /* ===== GRADIENTS & GLASS ===== */
    .glass-card {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 28px;
      box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.02);
      transition: transform 0.25s ease, box-shadow 0.3s ease;
    }

    .glass-card:hover {
      transform: translateY(-6px) scale(1.02);
      box-shadow: 0 30px 50px -15px rgba(0, 180, 255, 0.3), 0 0 0 1px rgba(110, 230, 255, 0.2);
    }

    /* gradient text */
    .gradient-text {
      background: linear-gradient(135deg, #7aaaff, #a678ff, #4ff0d0);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      font-weight: 700;
    }

    /* buttons */
    .btn-primary {
      background: linear-gradient(145deg, #2a5cff, #8a4fff, #1ecbe1);
      background-size: 200% 200%;
      border: none;
      color: white;
      font-weight: 600;
      padding: 0.9rem 2.2rem;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 8px 20px rgba(90, 60, 255, 0.4);
      border: 1px solid rgba(255,255,255,0.15);
      animation: gradientShift 6s infinite alternate;
    }
    .btn-primary:hover {
      transform: scale(1.05);
      box-shadow: 0 15px 30px rgba(0, 200, 255, 0.5);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid rgba(255,255,255,0.25);
      color: white;
      font-weight: 600;
      padding: 0.9rem 2.2rem;
      border-radius: 50px;
      backdrop-filter: blur(5px);
      transition: 0.3s;
    }
    .btn-outline:hover {
      border-color: #6ed4ff;
      background: rgba(110, 212, 255, 0.1);
      transform: translateY(-3px);
    }

    /* floating particles */
    .particle {
      position: absolute;
      background: radial-gradient(circle at 30% 30%, rgba(120, 220, 255, 0.5), rgba(180, 130, 255, 0.2));
      border-radius: 50%;
      filter: blur(30px);
      z-index: -1;
      animation: floatParticle 12s infinite alternate ease-in-out;
    }

    @keyframes floatParticle {
      0% { transform: translate(0, 0) scale(1); opacity: 0.4; }
      100% { transform: translate(30px, -40px) scale(1.3); opacity: 0.7; }
    }

    @keyframes gradientShift {
      0% { background-position: 0% 0%; }
      100% { background-position: 100% 100%; }
    }

    /* header */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(16px);
      background: rgba(8, 15, 30, 0.7);
      border-bottom: 1px solid rgba(255,255,255,0.05);
      padding: 0.8rem 2rem;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1400px;
      margin: 0 auto;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      background: linear-gradient(145deg, #9fc5ff, #b38eff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      letter-spacing: -0.02em;
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      align-items: center;
    }
    .nav-links a {
      color: #eef2ff;
      text-decoration: none;
      font-weight: 500;
      position: relative;
      padding: 0.3rem 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: linear-gradient(90deg, #3ec1ff, #b26eff);
      transition: 0.25s;
    }
    .nav-links a:hover::after {
      width: 100%;
    }

    /* container */
    .container {
      max-width: 1300px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    section {
      padding: 5rem 0;
      position: relative;
    }

    /* hero */
    .hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .hero h1 {
      font-size: 3.4rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 1.5rem;
    }
    .hero-illustration {
      position: relative;
      height: 400px;
      background: rgba(255,255,255,0.02);
      border-radius: 40px;
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,0.03);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 1rem;
      padding: 2rem;
    }
    .floating-card {
      background: rgba(0,20,50,0.5);
      backdrop-filter: blur(8px);
      padding: 1rem 1.5rem;
      border-radius: 30px;
      border: 1px solid rgba(110,200,255,0.3);
      box-shadow: 0 15px 35px rgba(0,150,255,0.2);
      animation: float 5s infinite alternate;
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }
    .floating-card i { font-size: 2rem; color: #8cb4ff; }
    @keyframes float {
      0% { transform: translateY(0px) rotate(0deg); }
      100% { transform: translateY(-20px) rotate(1deg); }
    }
    .mini-chart {
      width: 120px;
      height: 60px;
      background: rgba(255,255,255,0.05);
      border-radius: 40px;
      display: flex;
      align-items: flex-end;
      padding: 0.5rem;
      gap: 0.3rem;
    }
    .bar {
      width: 14px;
      background: linear-gradient(to top, #4aa4ff, #c56bff);
      border-radius: 10px;
      animation: growBar 2s infinite alternate;
    }

    @keyframes growBar {
      0% { height: 20px; }
      100% { height: 45px; }
    }

    /* counters */
    .stats-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      margin-top: 2rem;
      gap: 1rem;
    }
    .stat-item {
      text-align: center;
      flex: 1 1 150px;
    }
    .stat-number {
      font-size: 2.6rem;
      font-weight: 700;
      background: linear-gradient(135deg,#fff, #b2d9ff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    /* why choose us cards */
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
      margin-top: 3rem;
    }
    .feature-card {
      background: rgba(30, 40, 60, 0.4);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255,255,255,0.05);
      border-radius: 30px;
      padding: 2rem 1.5rem;
      text-align: center;
      transition: all 0.3s;
    }
    .feature-card i {
      font-size: 2.5rem;
      background: linear-gradient(145deg, #6dc8ff, #b282ff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 1rem;
    }

    /* services expand cards */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.8rem;
      margin-top: 3rem;
    }
    .service-card {
      background: rgba(20, 30, 50, 0.6);
      backdrop-filter: blur(10px);
      border-radius: 30px;
      padding: 2rem 1.5rem;
      transition: all 0.35s ease;
      border: 1px solid rgba(255,255,255,0.02);
      overflow: hidden;
      cursor: pointer;
    }
    .service-card:hover {
      background: rgba(40, 60, 90, 0.8);
      transform: scale(1.02) translateY(-8px);
      box-shadow: 0 25px 45px -10px #0044ff70;
    }
    .service-title {
      font-size: 1.6rem;
      font-weight: 600;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }
    .service-expand {
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: max-height 0.5s ease, opacity 0.3s ease;
    }
    .service-card:hover .service-expand {
      max-height: 300px; /* enough for lists */
      opacity: 1;
      margin-top: 1.2rem;
    }
    .service-expand ul {
      list-style: none;
    }
    .service-expand li {
      padding: 0.4rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .service-expand li i {
      font-size: 0.9rem;
      color: #5cd6ff;
    }

    /* carousel testimonial */
    .carousel-container {
      position: relative;
      max-width: 800px;
      margin: 0 auto;
      overflow: hidden;
      border-radius: 40px;
    }
    .carousel-track {
      display: flex;
      transition: transform 0.5s ease;
    }
    .testimonial-card {
      min-width: 100%;
      padding: 2.5rem;
      background: rgba(255,255,255,0.03);
      backdrop-filter: blur(16px);
      border-radius: 40px;
      text-align: center;
    }
    .testimonial-card img {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      object-fit: cover;
      border: 3px solid #a67eff;
      margin-bottom: 1rem;
    }
    .stars i {
      color: #ffb83b;
    }
    .carousel-btn {
      background: rgba(255,255,255,0.1);
      border: none;
      color: white;
      font-size: 2rem;
      padding: 0.5rem 1.2rem;
      border-radius: 40px;
      cursor: pointer;
      backdrop-filter: blur(8px);
    }

    /* FAQ accordion */
    .faq-item {
      background: rgba(255,255,255,0.02);
      border-radius: 30px;
      margin-bottom: 1rem;
      border: 1px solid rgba(255,255,255,0.05);
    }
    .faq-question {
      padding: 1.5rem 2rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      padding: 0 2rem;
      background: rgba(0,0,0,0.2);
      border-radius: 0 0 30px 30px;
    }
    .faq-item.active .faq-answer {
      max-height: 150px;
      padding: 1.5rem 2rem;
    }

    /* form styles */
    .form-group {
      margin-bottom: 1.5rem;
    }
    input, textarea {
      width: 100%;
      padding: 1rem 1.5rem;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 40px;
      color: white;
      font-size: 1rem;
      transition: all 0.2s;
    }
    input:focus, textarea:focus {
      outline: none;
      border-color: #6aaaff;
      box-shadow: 0 0 0 4px rgba(100, 150, 255, 0.3);
    }

    /* modal (legal) */
    .modal {
      display: none;
      position: fixed;
      top: 0; left: 0; width: 100%; height: 100%;
      background: rgba(0,0,0,0.7);
      backdrop-filter: blur(10px);
      align-items: center;
      justify-content: center;
      z-index: 200;
    }
    .modal-content {
      background: #151e30;
      max-width: 900px;
      padding: 2rem;
      border-radius: 40px;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .close-modal {
      float: right;
      font-size: 2rem;
      cursor: pointer;
    }

    /* footer */
    .footer {
      border-top: 1px solid rgba(255,255,255,0.05);
      background: #080e1a;
      padding: 3rem 0 1rem;
    }
    .footer-wave {
      height: 60px;
      background: repeating-linear-gradient(100deg, #1f3b5c 0px, #2b4a7a 20px, #19428b 40px);
      mask-image: linear-gradient(90deg, transparent, black 20%, black 80%, transparent);
      animation: waveMove 10s infinite linear;
    }
    @keyframes waveMove {
      0% { background-position: 0 0; }
      100% { background-position: 200px 0; }
    }

    /* popup / toast */
    .popup {
      position: fixed;
      bottom: 30px; right: 30px;
      background: #172236;
      backdrop-filter: blur(20px);
      padding: 1.5rem 2rem;
      border-radius: 60px;
      border-left: 6px solid #2ee5b0;
      box-shadow: 0 20px 40px black;
      transform: translateY(150%);
      transition: 0.4s;
      z-index: 300;
    }
    .popup.show {
      transform: translateY(0);
    }

    /* responsive */
    @media (max-width: 900px) {
      .hero-grid, .services-grid { grid-template-columns: 1fr; }
      .nav-links { display: none; } /* simplify for demo, could add hamburger but not necessary */
      .header { padding: 1rem; }
    }