* { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: Inter, system-ui, Arial, sans-serif;
      color: #1f2937;
      background: #ffffff;
      line-height: 1.6;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; }

    .container { max-width: 1300px; margin: auto; padding: 0 24px; }

    /* Header */
    header { 
      /* border: 1px solid black; */
      padding: 20px 0 40px; 
    }
    nav {
      /* border: 1px solid black; */
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
    }
    .brand { display: flex; align-items: center; gap: 12px; }
    .brand span { font-size: 1.25rem; font-weight: 700; }
    .btn {
      background: #2563eb;
      color: #fff;
      padding: 12px 28px;
      border-radius: 999px;
      font-weight: 600;
      border: none;
      cursor: pointer;
    }
    #topbtn{
      padding: 7px 28px;
      border-radius: 30px;
      width: 120px;
      text-align: center;
    }
    #mainbtn{
      font-size: 17px;
      font-weight: 700;
      text-align: center;
    }
    .btn.outline {
      background: transparent;
      color: #2563eb;
      border: 2px solid #2563eb;
      text-align: center;
    }
    .btn.outline span {
      font-weight: 600;
    }

    .hero {
      /* border: 1px solid black; */
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      align-items: center;
    }
    .hero h1 {
      font-size: 3rem;
      line-height: 1.2;
      margin-bottom: 24px;
      font-weight: 800;
    }
    .hero h1 span { color: #2563eb; }
    .hero p {
      font-size: 1.125rem;
      color: #6b7280;
      margin-bottom: 32px;
    }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .hero-actions .btn {width: 70%; font-size: 20px; font-weight: lighter;}

    /* Sections */
    section { padding: 100px 0; }
    .section-light { background: #f1f6fc; }
    .section-blue { background: #2563eb; color: #fff; }
    h2 {
      font-size: 2.25rem;
      text-align: center;
      margin-bottom: 24px;
    }
    .section-desc {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 64px;
      color: #6b7280;
    }
    .section-blue .section-desc { color: #e5e7eb; }
    .surveybtn{
      background-color: #2563eb;
    }
    .imgProb{
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      align-items: center;
    }
    /* Cards */
    .grid {
      display: block;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 32px;
    }

    .card {
      border: 2px solid #6b7280; 
      background: #ffffff;
      padding: 32px;
      border-radius: 20px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.06);
      text-align: center;
      margin-top: 20px;
    }
    .card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
    }
    .card p { color: #6b7280; }

    /* Steps */
    .steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 40px;
      text-align: center;
    }
    .step-icon { font-size: 2.5rem; margin-bottom: 16px; }

    .surveybtn{
      /* border: 1px solid black; */
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 40px;
      
      /* text-align: center; */
    }
    .surveybtn .btn{
      color: rgb(255, 255, 255);
      background-color: rgb(3, 24, 43);
      margin: 0px 10px ;
      padding: 15px 40px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.3);
      font-weight: bolder;
    }
    #sbtn{
      background: rgb(233, 244, 255);
      color: rgb(2, 84, 161);
    }

    .socialEl {
      background-color: #333333;
      width: 100%;
    }
    .social-links {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 40px;
      text-align: center;
      list-style-type: none;
      color: #ffffff;
    }

    .social-link {
      display: flex;
      align-items: center;
      flex-direction: column;
      color: #ffffff;
      gap: 10px
    }
    .social-links ion-icon {
      width: 30px;
      height: 30px;
    }
    .icontg {
       filter: invert(100%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(100%) contrast(100%);   
    }

    li {
      -webkit-tap-highlight-color: rgba(0,0,0,0);   
    }
    
    /* Footer */
    footer {
      padding: 40px 0;
      text-align: center;
      color: #6b7280;
      font-size: 0.9rem;
    }

    @media (max-width: 768px) {
      .hero h1 { font-size: 2.4rem; }
      section { padding: 80px 0; }
    }