body {font-family: 'Inter', sans-serif; margin: 0; background: #f9fafb; color: #111827;}
    html {
      scroll-behavior: smooth; /* enables smooth scrolling */
    }
    header, section, footer {max-width: 1100px; margin: auto; padding: 40px 20px;}
    header {display: flex; justify-content: space-between; align-items: center;  padding: 5px 20px; max-width: 750px;}
    a {margin: 0 10px; text-decoration: none; color: #000;}
    button {margin: 0 10px; text-decoration: none; color: #000;}
    nav a {margin: 0 10px; text-decoration: none; color: #6b7280;}
    nav button {margin: 0 10px; text-decoration: none; color: #6b7280;}
    hr { display: block; height: 1px; border: 0; border-top: 2px solid #F2F3F5; margin: 0; padding: 0;}
    .btn {
      background: linear-gradient(90deg,#020e23,#01030a);
      color: #fff; 
      padding: 10px 18px; 
      border-radius: 16px; 
      text-decoration: none; 
      font-weight: 600; 
      box-shadow: 0 2px 6px rgba(11,99,255,0.3); 
      transition: 0.2s;
    }
    .btn:hover {opacity: 0.9;}
    /* Mobile Menu */
    .hamburger {display: none; flex-direction: column; cursor: pointer; gap: 4px;}
    .hamburger div {width: 24px; height: 2px; background: #111827; border-radius: 1px;}
    .mobile-nav {display: none; flex-direction: column; position: absolute; top: 23%; left: 0; width: 100%; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.05); border-radius: 0 0 10px 10px;}
    .mobile-nav a {padding: 14px 20px; text-decoration: none; color: #6b7280;}
    .mobile-nav .btn {background: linear-gradient(90deg,#020e23,#01030a); color: #fff; padding: 10px 18px; border-radius: 8px; text-decoration: none; font-weight: 600; box-shadow: 0 2px 6px rgba(11,99,255,0.3); transition: 0.2s;}
    .mobile-nav .btn:hover {opacity: 0.9;}
    .mobile-nav a:last-child {border-bottom: none;}
    
    @media(max-width: 768px) {
      nav {display: none;}
      .nav {display: none;}
      .hamburger {display: flex;}
      .mobile-nav.active {display: flex;}
      .security-title {font-size: 1.2rem !important; }
    }
    .hero {text-align: center; padding: 30px 20px;}
    .hero-h1 {font-size: 3.5rem; margin-top:0; margin-bottom: 0; max-width: 80%; letter-spacing: -1.5px; font-weight: 800; line-height: 1.2;}
    .hero p {font-size: 1.125rem; max-width: 700px; margin: 0 auto 0; color: #6b7280;}
    .book-btn{
      margin-bottom: 1.5rem;
      font-size: 1.25rem; 
      padding: 1rem 1.25rem;
      position: relative; z-index: 2;
    }
    .problem-list li {
      font-size: 1.125rem;
    }
    .solution-list li {
      font-size: 1.125rem;
    }
    .problem-badge{
      font-size: 1.125rem;
    }
    .solution-badge{
      font-size: 1.125rem;
    }
    .sar-sor-card{
      line-height: 1.8;
      font-size: 1.125rem;
    }
    .hero-image-wrap {
      height: auto;
      will-change: transform;
      transform-origin: center center;
      overflow: hidden;
      transform: scale(1.28);
    }

    @media screen and (max-width: 991px) {
      .hero-h1 {font-size: 3rem;}
      .hero p {font-size: 1rem;}
      .book-btn{ font-size: 1.25rem; padding: 1rem 1.25rem;} 
      .problem-list li{font-size: 1rem;}
      .sar-sor-card{font-size: 1rem;}
      .solution-list li{font-size: 1rem;}
      .problem-badge{font-size: 1rem;}
      .solution-badge{font-size: 1rem;}
    }
    @media(max-width: 767px) {
      .hero-h1 {font-size: 2.25rem;}
      .book-btn{ font-size: 1rem; padding: 0.75rem 1rem; }    
      .hero-image-wrap{transform: scale(1.0);}
    }
    @media(max-width: 479px) {
      .hero-h1 {font-size: 2.5rem;}
      .book-btn{ font-size: 1rem; padding: 0.75rem 1rem;}    
      .hero-img {margin-top:1rem;}
      .hero-image-wrap{transform: scale(1.0);}
    }
    
    .hero-img{
      position: relative;
      z-index: -1;
      image-rendering: -webkit-optimize-contrast;
      image-rendering: crisp-edges;
      transform: translateZ(0); /* force GPU for better scaling */
    }
    
    .hero-wrapper{
      height: 60vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-around;
    }
    .card-image-wrapper{    
      height: 280px;
      max-height: 280px;
    }
    @media(max-width: 991px) {
      .section-title {font-size: 2.5rem;}
    }
    @media(max-width: 768px) {
      .section-title {font-size: 2rem;}
    }
    @media(max-width: 479px) {
      .section-title {font-size: 1.75rem;}
    }


    .card-image{
      width: 100%; 
      height: 100%;
      border-radius: 10px; 
      object-fit: contain;
    }
    .problem-solution-card{
      display: flex;
      align-items: center;
      flex-direction: column;
    }
    .problem-badge {
      display: inline-flex; 
      align-items: center; 
      background-color: #f7dada; 
      color: #cf3333; 
      border-color: #cf3333;
      border: solid 1.5px;
      font-weight: 500; 
      padding: 4px 12px; 
      border-radius: 9999px; 
      margin-bottom: 20px
    }
    .solution-badge {
      display: inline-flex; 
      align-items: center; 
      background-color: #e6f7ec; 
      color: #137333; 
      border-color: #137333;
      border: solid 1.5px;
      font-weight: 500; 
      padding: 4px 12px; 
      border-radius: 9999px; 
      margin-bottom: 20px
    }
    .image {
      width: 100%; 
    }
    .problem-list {
      list-style: none;
      padding: 0;
      margin: 20px 0px;
    }

    .problem-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 14px;
      color: #374151; 
      line-height: 1.5;
    }

    .problem-list li::before {
      content: "–";
      display: flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background-color: #fee2e2; 
      color: #ef4444; 
      border-radius: 50%;
      font-weight: 600;
      flex-shrink: 0;
      margin-top: 4px;
    }

    .solution-list {
      list-style: none;
      padding: 0;
      margin: 20px 0px;
    }

    .solution-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 14px;
      color: #374151; 
      line-height: 1.5;
    }

    .solution-list li::before {
      content: "✔";
      display: flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      background-color: #dcfce7; 
      color: #16a34a; 
      border-radius: 50%;
      font-weight: 700;
      flex-shrink: 0;
      font-size: 14px;
      margin-top: 2px;
    }

    .feature-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      max-width: 1000px;
      width: 100%;
    }
    .feature-image{
      width: 100%; 
      border-radius: 10px; 
      display: flex; 
      align-items: center; 
      justify-content: center; 
    }

    .steps {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .step {
      position: relative;
      overflow: hidden;
      padding: 16px 20px;
      border-left: 4px solid transparent;
      border-radius: 10px;
      background: transparent;
      color: #6b7280;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .step:hover {
      background: #f3f4f6;
    }

    .step.active {
      background: #ffffff;
      border-left: 4px solid #1e293b;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
      color: #1f2937;
    }

    .step-title {
      font-weight: 600;
      color: inherit;
    }
    .step-desc {
       font-size: 15px;
      line-height: 1.6;
      margin-top: 6px;
      color: #4b5563;
      max-height: 0;          
      opacity: 0;             
      overflow: hidden;
      transition: all 0.4s ease;  
    }

    .step.active .step-desc {
      max-height: 25rem;      
      opacity: 1;
      margin-top: 6px; 
    }

    .faq-item {
      cursor: pointer;
      padding: 20px 0;
      transition: background 0.3s ease;
    }

    .faq-item:hover {
      background: #fafafa;
    }

    .faq-question {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 16px;
      transition: color 0.3s ease;
    }

    .faq-question span {
      transition: transform 0.3s ease;
      font-size: 20px;
      line-height: 0;
    }

    .faq-item.active .faq-question span {
      transform: rotate(45deg);
      color: #4b5563;
    }

    .faq-answer {
      overflow: hidden;
      height: 0;
      transition: height 0.35s ease;
      color: #4b5563;
      font-size: 15px;
      line-height: 1.6;
    }

    .faq-answer p {
      margin: 10px 0 0;
    }
    .section-title {text-align: center; margin-bottom: 16px; font-size: 1.8rem; font-weight: 800; line-height: 1.2; letter-spacing: -1px;}
    .section-sub {text-align: center; color: #6b7280; margin-bottom: 40px; font-size: 1.25rem;}
    /* @media(max-width: 991px) {
      .section-sub {}
    } */
    @media(max-width: 768px) {
      .section-sub {font-size: 1.125rem;}
    }
    @media(max-width: 479px) {
      .section-sub {font-size: 1.125rem;}
    }
    .grid-2 {
      display: grid; 
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); 
      gap: 24px;  
      align-items: stretch;
      justify-content: center;
    }
    .card {background: #fff; padding: 24px; border-radius: 10px; box-shadow: 0 2px 8px rgba(0,0,0,0.04); margin: 0px 20px;}
    .dark-section {background: #111827; color: #fff; padding: 60px 84px; max-width: none;}
    .dark-section .card {background: #1f2937; color: #d1d5db;}
    .footer {
      max-width: none;
      background-color: #0f172a; 
      color: #9ca3af;           
      padding: 20px 60px;
      font-family: Inter, Arial, sans-serif;
      font-size: 14px;
    }

    .footer-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      max-width: 1200px;
      margin: 0 auto;
    }

    .footer-left p {
      margin: 0;
      line-height: 1.5;
    }

    .footer-right a {
      color: #9ca3af;
      text-decoration: none;
      margin-left: 24px;
      transition: color 0.2s ease;
    }

    .footer-right a:hover {
      color: #ffffff;
    }

    @media (max-width: 640px) {
      .footer-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
      }

      .footer-right a {
        margin-left: 0;
        margin-right: 16px;
      }
    }

        /* Overlay */
    .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.45);
      display: none;
      justify-content: center;
      align-items: center;
      z-index: 999;
    }

    .modal-overlay.active {
      display: flex;
    }

    /* Modal */
    .modal {
      background: #ffffff;
      border-radius: 16px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
      width: 100%;
      max-width: 480px;
      padding: 32px;
      position: relative;
      animation: fadeIn 0.3s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(-10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* Close button */
    .close-modal {
      position: absolute;
      top: 16px;
      right: 16px;
      background: none;
      border: none;
      font-size: 20px;
      color: #9ca3af;
      cursor: pointer;
    }

    .close-modal:hover {
      color: #111827;
    }

    /* Form Fields */
    .modal h2 {
      font-size: 20px;
      margin-bottom: 20px;
      font-weight: 600;
    }

    .modal label {
      display: block;
      font-weight: 500;
      margin-bottom: 6px;
      color: #374151;
    }

    .modal input,
    .modal textarea {
      width: 90%;
      padding: 10px 12px;
      border: 1px solid #e5e7eb;
      border-radius: 8px;
      font-size: 14px;
      margin-bottom: 16px;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      font-family: inherit;
      resize: none;
    }

    .modal input:focus,
    .modal textarea:focus {
      outline: none;
      border-color: #2563eb;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

    .modal button.send-btn {
      width: 100%;
      background: linear-gradient(90deg,#020e23,#01030a);
      color: #fff;
      border: none;
      padding: 12px 0;
      font-weight: 600;
      font-size: 15px;
      border-radius: 8px;
      transition: box-shadow 0.2s ease, transform 0.2s ease;
    }

    .modal button.send-btn:hover {
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
      transform: translateY(-2px);
    }
    .modal button.send-btn:disabled {
      background: grey;
    }