html {
    box-sizing: border-box;
    scroll-behavior: smooth;
  }
  
  *, *:before, *:after {
    box-sizing: inherit;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fafafa;
  }
  
  /* Navigation */
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #ffffff;
    border-bottom: 1px solid #ddd;
  }
  
  .logo {
    font-weight: bold;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
  }
  
  .logo .ket-symbol {
    color: #0b5cff;
    font-weight: normal;
  }
  
  .logo-image {
    max-width: 100px;
    height: auto;
    width: 100%;
    object-fit: contain;
  }

  @media (max-width: 600px) {
    .logo-image {
        max-width: 80px; /* Slightly smaller on mobile */
    }
  }

  .nav-actions a {
    margin-left: 1rem;
    text-decoration: none;
    color: #333;
    font-weight: 500;
  }
  
  .nav-actions a:hover {
    color: #0b5cff;
  }
  
  .btn-primary {
    background: #0b5cff;
    color: #fff !important;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 400;
    transition: background 0.3s ease;
  }
  
  .btn-primary:hover {
    background: #094ecc;
  }
  
  /* Hero Section */
  .hero {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0b5cff, #4F9CFB);
    min-height: 70vh;
    padding: 2rem;
    text-align: center;
    color: #fff;
  }
  
  .hero-content {
    max-width: 700px;
    margin: 0 auto;
  }
  
  .hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 400;
  }
  
  .hero p {
    font-size: 1.15rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin: 0 auto 2rem auto;
  }
  
  .hero-content a.btn-primary {
    background: #fff;
    color: #0b5cff !important;
    font-size: 1rem;
  }
  
  .hero-content a.btn-primary:hover {
    background: #f0f0f0;
  }
  
  /* Features Section */
  .features {
    padding: 4rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
  }
  
  .features h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 600;
  }
  
  .feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: left;
  }
  
  .feature-card h3 {
    margin-bottom: 1rem;
    color: #0b5cff;
    font-weight: 600;
    font-size: 1.25rem;
  }
  
  /* About Section */
  .about {
    padding: 4rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
  }
  
  .about h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 600;
  }
  
  .about p {
    font-size: 1.15rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
  }
  
  /* Contact Section */
  .contact {
    padding: 4rem 1rem;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
  }
  
  .contact h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 600;
  }
  
  .contact p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
  }
  
  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  
  .contact-form input,
  .contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
  }
  
  .contact-form button {
    align-self: flex-end;
  }
  
  /* Footer */
  .footer {
    text-align: center;
    padding: 1rem;
    background: #fff;
    border-top: 1px solid #ddd;
  }
  
  .footer p {
    color: #666;
  }
  
  /* Responsive Design */
  @media (min-width: 600px) {
    .feature-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    
    .hero h1 {
      font-size: 3rem;
    }
    
    .hero p {
      font-size: 1.2rem;
    }
  }
  
  .profile-image {
    width: 200px;
    height: 200px;
    margin: 2rem auto;
    border-radius: 50%;
    overflow: hidden;
  }

  .profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  @media (max-width: 600px) {
    .profile-image {
      width: 150px;
      height: 150px;
    }
  }

  .text-center {
    text-align: center;
  }

  .margin-bottom-4 {
    margin-bottom: 4rem;
  }
  
  /* Pricing Section */
  .pricing {
    padding: 4rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
  }
  
  .pricing h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 600;
  }
  
  .pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
  }
  
  .pricing-card {
    background: #fff;
    padding: 2rem;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: relative;
  }
  
  .pricing-card.popular {
    border: 2px solid #0b5cff;
    transform: scale(1.02);
  }
  
  .popular-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #0b5cff;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
  }
  
  .pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
  }
  
  .price {
    margin: 1.5rem 0;
  }
  
  .price .amount {
    font-size: 2.5rem;
    font-weight: 600;
    color: #0b5cff;
  }
  
  .price .period {
    font-size: 1.1rem;
    color: #666;
  }
  
  .billing {
    color: #666;
    margin-bottom: 1.5rem;
  }
  
  .features-list {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
  }
  
  .features-list li {
    margin: 1rem 0;
    padding-left: 1.5rem;
    position: relative;
  }
  
  .features-list li:before {
    content: "✓";
    color: #0b5cff;
    position: absolute;
    left: 0;
  }
  
  @media (min-width: 900px) {
    .pricing-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }