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

 body {
     font-family: 'SF Pro Display', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
     line-height: 1.6;
     color: #2d3748;
     background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
 }

 .container {
     max-width: 1200px;
     margin: 0 auto;
     padding: 0 20px;
 }

 /* Header */
 header {
     background: rgba(255, 255, 255, 0.95);
     backdrop-filter: blur(10px);
     border-bottom: 1px solid #e5e7eb;
     padding: 1rem 0;
     position: sticky;
     top: 0;
     z-index: 100;
 }

 nav {
     display: flex;
     justify-content: space-between;
     align-items: center;
     flex-wrap: wrap;
     position: relative;
 }

 .mobile-menu-toggle {
     display: none;
     background: none;
     border: 2px solid #06b6d4;
     color: #06b6d4;
     font-size: 1.5rem;
     cursor: pointer;
     padding: 8px;
     border-radius: 8px;
     transition: all 0.3s;
 }

 .mobile-menu-toggle:hover {
     background: #06b6d4;
     color: white;
 }

 .logo {
     font-size: 1.8rem;
     font-weight: 800;
     display: flex;
     align-items: center;
     color: #111827;
 }

 .logo i {
     margin-right: 10px;
     color: #06b6d4;
 }

 .nav-links {
     display: flex;
     list-style: none;
     gap: 2rem;
     flex-wrap: wrap;
 }

 .nav-links a {
     color: #6b7280;
     text-decoration: none;
     transition: color 0.3s;
     font-weight: 500;
     padding: 8px 0;
 }

 .nav-links a:hover {
     color: #06b6d4;
 }

 /* Hero Section */
 .hero {
     padding: 8rem 0;
     text-align: center;
     background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
     position: relative;
 }

 .hero::before {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     right: 0;
     bottom: 0;
     background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e5e7eb" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
     opacity: 0.5;
 }

 .hero-content {
     position: relative;
     z-index: 2;
 }

 .hero h1 {
     font-size: 4rem;
     margin-bottom: 1.5rem;
     font-weight: 900;
     color: #111827;
     line-height: 1.1;
 }

 .hero .subtitle {
     font-size: 1.5rem;
     margin-bottom: 2rem;
     color: #6b7280;
     font-weight: 300;
 }

 .hero p {
     font-size: 1.2rem;
     margin-bottom: 3rem;
     color: #6b7280;
     max-width: 600px;
     margin-left: auto;
     margin-right: auto;
     line-height: 1.7;
 }

 .cta-button {
     display: inline-block;
     background: #06b6d4;
     color: white;
     padding: 20px 40px;
     text-decoration: none;
     border-radius: 8px;
     font-weight: 600;
     transition: all 0.3s;
     font-size: 1.1rem;
     box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
 }

 .cta-button:hover {
     background: #0891b2;
     transform: translateY(-2px);
     box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
 }

 /* AI Features Section */
 .ai-features {
     padding: 6rem 0;
     background: white;
 }

 .ai-features h2 {
     text-align: center;
     font-size: 3rem;
     margin-bottom: 1rem;
     color: #111827;
     font-weight: 800;
 }

 .ai-features .subtitle {
     text-align: center;
     font-size: 1.2rem;
     color: #6b7280;
     margin-bottom: 4rem;
     max-width: 600px;
     margin-left: auto;
     margin-right: auto;
 }

 .features-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
     gap: 3rem;
     margin-top: 4rem;
 }

 .feature-card {
     text-align: center;
     padding: 2rem;
     border-radius: 12px;
     transition: all 0.3s;
     border: 1px solid #f3f4f6;
 }

 .feature-card:hover {
     transform: translateY(-5px);
     box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
     border-color: #e5e7eb;
 }

 .feature-icon {
     width: 80px;
     height: 80px;
     background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     margin: 0 auto 2rem;
     position: relative;
 }

 .feature-icon::before {
     content: '';
     position: absolute;
     top: -5px;
     left: -5px;
     right: -5px;
     bottom: -5px;
     background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
     border-radius: 50%;
     opacity: 0.2;
     animation: pulse-ring 2s infinite;
 }

 .feature-icon i {
     font-size: 2rem;
     color: white;
     position: relative;
     z-index: 2;
 }

 .feature-card h3 {
     font-size: 1.5rem;
     margin-bottom: 1rem;
     color: #111827;
     font-weight: 700;
 }

 .feature-card p {
     color: #6b7280;
     line-height: 1.7;
     font-size: 1rem;
 }

 /* AI Analysis Section */
 .ai-analysis {
     padding: 6rem 0;
     background: #f8fafc;
 }

 .ai-analysis h2 {
     text-align: center;
     font-size: 3rem;
     margin-bottom: 1rem;
     color: #111827;
     font-weight: 800;
 }

 .ai-analysis .subtitle {
     text-align: center;
     font-size: 1.2rem;
     color: #6b7280;
     margin-bottom: 4rem;
     max-width: 600px;
     margin-left: auto;
     margin-right: auto;
 }

 .analysis-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
     gap: 2rem;
     margin-top: 4rem;
 }

 .analysis-card {
     background: white;
     padding: 2.5rem 2rem;
     border-radius: 12px;
     text-align: center;
     border: 1px solid #e5e7eb;
     transition: all 0.3s;
     position: relative;
     overflow: hidden;
 }

 .analysis-card::before {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     right: 0;
     height: 4px;
     background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
 }

 .analysis-card:hover {
     transform: translateY(-5px);
     box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
 }

 .analysis-card h3 {
     font-size: 1.3rem;
     margin-bottom: 1rem;
     color: #111827;
     font-weight: 600;
 }

 .score {
     font-size: 3.5rem;
     font-weight: 900;
     color: #06b6d4;
     margin: 1rem 0;
     position: relative;
 }

 .score::after {
     content: '/10';
     font-size: 1.5rem;
     color: #9ca3af;
     font-weight: 400;
 }

 .score-label {
     color: #6b7280;
     font-size: 0.9rem;
     font-weight: 500;
 }

 /* Technology Section */
 .technology {
     padding: 6rem 0;
     background: white;
 }

 .technology h2 {
     text-align: center;
     font-size: 3rem;
     margin-bottom: 1rem;
     color: #111827;
     font-weight: 800;
 }

 .technology .subtitle {
     text-align: center;
     font-size: 1.2rem;
     color: #6b7280;
     margin-bottom: 4rem;
     max-width: 600px;
     margin-left: auto;
     margin-right: auto;
 }

 .tech-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
     gap: 2rem;
     margin-top: 4rem;
 }

 .tech-item {
     text-align: center;
     padding: 2rem 1rem;
     border-radius: 12px;
     border: 1px solid #e5e7eb;
     transition: all 0.3s;
 }

 .tech-item:hover {
     transform: translateY(-3px);
     box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
 }

 .tech-icon {
     font-size: 3rem;
     color: #06b6d4;
     margin-bottom: 1rem;
 }

 .tech-item h3 {
     font-size: 1.1rem;
     color: #111827;
     font-weight: 600;
     margin-bottom: 0.5rem;
 }

 .tech-item p {
     color: #6b7280;
     font-size: 0.9rem;
 }

 /* Disclaimers Section */
 .disclaimers {
     background: #111827;
     color: white;
     padding: 4rem 0;
 }

 .disclaimers h2 {
     text-align: center;
     font-size: 2.5rem;
     margin-bottom: 2rem;
     color: #06b6d4;
     font-weight: 800;
 }

 .disclaimer-content {
     max-width: 800px;
     margin: 0 auto;
     text-align: center;
     background: rgba(255, 255, 255, 0.05);
     padding: 2.5rem;
     border-radius: 12px;
     border: 1px solid rgba(255, 255, 255, 0.1);
 }

 .disclaimer-content p {
     margin-bottom: 1rem;
     font-size: 1rem;
     line-height: 1.7;
     color: #d1d5db;
 }

 .disclaimer-content .highlight {
     color: #06b6d4;
     font-weight: bold;
 }

 /* Footer */
 footer {
     background: #f8fafc;
     color: #6b7280;
     padding: 3rem 0;
     border-top: 1px solid #e5e7eb;
 }

 .footer-bottom {
     text-align: center;
     font-size: 0.9rem;
 }

 /* WhatsApp Button */
 .whatsapp-float {
     position: fixed;
     width: 70px;
     height: 70px;
     bottom: 30px;
     left: 50%;
     transform: translateX(-50%);
     background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
     color: white;
     border-radius: 50px;
     text-align: center;
     font-size: 32px;
     box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
     z-index: 1000;
     display: flex;
     align-items: center;
     justify-content: center;
     transition: all 0.3s ease;
     text-decoration: none;
     border: 3px solid white;
     animation: pulse 2s infinite;
 }

 .whatsapp-float:hover {
     background: linear-gradient(135deg, #128c7e 0%, #0d6b5a 100%);
     transform: translateX(-50%) scale(1.15);
     box-shadow: 0 12px 35px rgba(37, 211, 102, 0.6);
     text-decoration: none;
     color: white;
 }

 .whatsapp-float::before {
     content: '';
     position: absolute;
     top: -5px;
     left: -5px;
     right: -5px;
     bottom: -5px;
     background: linear-gradient(135deg, #25d366, #128c7e);
     border-radius: 50px;
     z-index: -1;
     opacity: 0.3;
     animation: ripple 2s infinite;
 }

 .whatsapp-tooltip {
     position: absolute;
     bottom: 80px;
     left: 50%;
     transform: translateX(-50%);
     background: #111827;
     color: white;
     padding: 12px 16px;
     border-radius: 8px;
     font-size: 14px;
     font-weight: 500;
     white-space: nowrap;
     opacity: 0;
     visibility: hidden;
     transition: all 0.3s ease;
     box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
     z-index: 1001;
 }

 .whatsapp-tooltip::after {
     content: '';
     position: absolute;
     top: 100%;
     left: 50%;
     transform: translateX(-50%);
     border: 6px solid transparent;
     border-top-color: #111827;
 }

 .whatsapp-float:hover .whatsapp-tooltip {
     opacity: 1;
     visibility: visible;
     transform: translateX(-50%) translateY(-5px);
 }

 @keyframes pulse {
     0% {
         box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
     }

     50% {
         box-shadow: 0 8px 25px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1);
     }

     100% {
         box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
     }
 }

 @keyframes ripple {
     0% {
         transform: scale(1);
         opacity: 0.3;
     }

     100% {
         transform: scale(1.4);
         opacity: 0;
     }
 }

 @keyframes pulse-ring {
     0% {
         transform: scale(0.8);
         opacity: 0.8;
     }

     100% {
         transform: scale(1.2);
         opacity: 0;
     }
 }

 /* Tablet/iPad Responsive */
 @media (max-width: 1024px) and (min-width: 769px) {
     .whatsapp-float {
         width: 65px;
         height: 65px;
         font-size: 30px;
         bottom: 25px;
         z-index: 1001;
     }

     .whatsapp-tooltip {
         opacity: 1 !important;
         visibility: visible !important;
         transform: translateX(-50%) translateY(-5px) !important;
         bottom: 85px;
         background: #111827;
         font-size: 13px;
         padding: 10px 14px;
         border-radius: 8px;
         box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
     }
 }

 /* Mobile Responsive */
 @media (max-width: 768px) {
     .mobile-menu-toggle {
         display: block;
     }

     .nav-links {
         display: none;
         position: absolute;
         top: 100%;
         left: 0;
         right: 0;
         background: rgba(248, 250, 252, 0.95);
         backdrop-filter: blur(10px);
         flex-direction: column;
         gap: 0;
         padding: 1rem 0;
         border-radius: 0 0 12px 12px;
         box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
         border: 1px solid #e5e7eb;
         z-index: 1000;
     }

     .nav-links.active {
         display: flex;
     }

     .nav-links li {
         width: 100%;
     }

     .nav-links a {
         display: block;
         padding: 14px 20px;
         font-size: 1rem;
         text-align: center;
         color: #6b7280;
         border-bottom: 1px solid #e5e7eb;
         transition: all 0.3s;
         border-left: 3px solid transparent;
     }

     .nav-links a:hover {
         color: #06b6d4;
         background: #f8fafc;
         border-left-color: #06b6d4;
     }

     .nav-links li:last-child a {
         border-bottom: none;
     }

     .hero h1 {
         font-size: 2.5rem;
     }

     .hero .subtitle {
         font-size: 1.2rem;
     }

     .hero p {
         font-size: 1rem;
     }

     .ai-features h2,
     .ai-analysis h2,
     .technology h2 {
         font-size: 2.2rem;
     }

     .features-grid,
     .analysis-grid,
     .tech-grid {
         grid-template-columns: 1fr;
     }

     .whatsapp-float {
         width: 60px;
         height: 60px;
         font-size: 28px;
         bottom: 20px;
         z-index: 1001;
         position: fixed !important;
         display: flex !important;
     }

     .whatsapp-tooltip {
         opacity: 1 !important;
         visibility: visible !important;
         transform: translateX(-50%) translateY(-5px) !important;
         bottom: 75px;
         background: #111827;
         font-size: 12px;
         padding: 8px 12px;
         border-radius: 6px;
         box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
         white-space: nowrap;
     }
 }

 @media (max-width: 480px) {
     .container {
         padding: 0 15px;
     }

     .hero {
         padding: 4rem 0;
     }

     .hero h1 {
         font-size: 2rem;
     }

     .feature-card,
     .analysis-card,
     .tech-item {
         padding: 1.5rem;
     }
 }