/* CSS Reset ve Temel Stiller */
    *, *::before, *::after { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
      line-height: 1.6;
      color: #333;
      background: #f9fafb;
    }
    img { max-width: 100%; height: auto; }
    a { text-decoration: none; color: inherit; }
    
    /* Header Stili */
    header {
      background: linear-gradient(135deg, #1a56db 0%, #1e40af 100%);
      color: white;
      padding: 1rem 2rem;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-container {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 700;
    }
    .logo span { color: #f59e0b; }
    nav ul {
      display: flex;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 2rem;
    }
    nav a {
      font-weight: 500;
      transition: color 0.3s;
      position: relative;
    }
    nav a:hover { color: #f59e0b; }
    nav a::after {
      content: '';
      position: absolute;
      bottom: -5px;
      left: 0;
      width: 0;
      height: 2px;
      background: #f59e0b;
      transition: width 0.3s;
    }
    nav a:hover::after { width: 100%; }
    
    /* Hero Bölümü */
    .hero {
      background: linear-gradient(rgba(26, 86, 219, 0.9), rgba(30, 64, 175, 0.9)), url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%231a56db"/><path d="M0 0L100 100" stroke="%23f59e0b" stroke-width="2"/><path d="M100 0L0 100" stroke="%23f59e0b" stroke-width="2"/></svg>');
      background-size: cover;
      color: white;
      text-align: center;
      padding: 5rem 1rem;
    }
    .hero-content {
      max-width: 800px;
      margin: 0 auto;
    }
    .hero h1 {
      font-size: 2.8rem;
      margin-bottom: 1rem;
      line-height: 1.2;
    }
    .hero p {
      font-size: 1.2rem;
      margin-bottom: 2rem;
      opacity: 0.9;
    }
    .btn {
      display: inline-block;
      background: #f59e0b;
      color: white;
      padding: 0.8rem 2rem;
      border-radius: 5px;
      font-weight: 600;
      transition: all 0.3s;
      border: none;
      cursor: pointer;
    }
    .btn:hover {
      background: #d97706;
      transform: translateY(-3px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }
    
    /* Özellikler Bölümü */
    .features {
      padding: 4rem 1rem;
      max-width: 1200px;
      margin: 0 auto;
    }
    .section-title {
      text-align: center;
      margin-bottom: 3rem;
      color: #1e40af;
    }
    .section-title h2 {
      font-size: 2.2rem;
      margin-bottom: 1rem;
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }
    .feature-card {
      background: white;
      border-radius: 10px;
      padding: 2rem;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s, box-shadow 0.3s;
      text-align: center;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }
    .feature-icon {
      font-size: 2.5rem;
      color: #1a56db;
      margin-bottom: 1rem;
    }

    /* Makaleler Bölümü */
    .articles {
      padding: 4rem 1rem;
      max-width: 1200px;
      margin: 0 auto;
      background: #f1f5f9;
    }
    .article-content {
      background: white;
      padding: 2rem;
      border-radius: 10px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
      margin-bottom: 2rem;
    }
    .article-content h3 {
      color: #1a56db;
      margin-bottom: 1rem;
      font-size: 1.8rem;
    }
    .article-content p {
      margin-bottom: 1rem;
    }
    .article-content ul {
      list-style: disc;
      margin-left: 20px;
      margin-bottom: 1rem;
    }
    .article-content a {
      color: #1a56db;
      text-decoration: underline;
    }
    .article-content a:hover {
      color: #f59e0b;
    }
    
    /* Planlar Bölümü */
    .plans {
      background: #f1f5f9;
      padding: 4rem 1rem;
    }
    .plans-container {
      max-width: 1200px;
      margin: 0 auto;
    }
    .plans-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }
    .plan-card {
      background: white;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s;
      position: relative;
    }
    .plan-card:hover {
      transform: scale(1.03);
    }
    .plan-header {
      background: #1a56db;
      color: white;
      padding: 1.5rem;
      text-align: center;
    }
    .plan-price {
      font-size: 2.5rem;
      font-weight: 700;
      margin: 1rem 0;
    }
    .plan-price span {
      font-size: 1rem;
      font-weight: 400;
    }
    .plan-features {
      padding: 2rem;
    }
    .plan-features ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .plan-features li {
      padding: 0.5rem 0;
      border-bottom: 1px solid #e5e7eb;
    }
    .plan-features li:last-child {
      border-bottom: none;
    }
    .plan-button {
      display: block;
      text-align: center;
      margin: 1.5rem;
    }
    
    /* SSS Bölümü */
    .faq {
      padding: 4rem 1rem;
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      margin-bottom: 1.5rem;
      border: 1px solid #e5e7eb;
      border-radius: 8px;
      overflow: hidden;
    }
    .faq-question {
      padding: 1.5rem;
      background: #f8fafc;
      cursor: pointer;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      padding: 0 1.5rem;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s, padding 0.3s;
    }
    .faq-answer.active {
      padding: 1.5rem;
      max-height: 500px; /* Yeterli bir değer */
    }
    
    /* Footer */
    footer {
      background: #1e293b;
      color: white;
      padding: 3rem 1rem;
    }
    .footer-container {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
    }
    .footer-logo {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }
    .footer-logo span { color: #f59e0b; }
    .footer-links h3 {
      color: #f59e0b;
      margin-bottom: 1rem;
    }
    .footer-links ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.5rem;
    }
    .footer-links a {
      color: #cbd5e1;
      transition: color 0.3s;
    }
    .footer-links a:hover {
      color: #f59e0b;
    }
    .copyright {
      text-align: center;
      padding-top: 2rem;
      margin-top: 2rem;
      border-top: 1px solid #374151;
      color: #9ca3af;
    }
    
    /* Responsive Tasarım */
    @media (max-width: 768px) {
      .header-container {
        flex-direction: column;
        gap: 1rem;
      }
      nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
      }
      .hero h1 {
        font-size: 2.2rem;
      }
      .articles .article-content {
        padding: 1.5rem;
      }
    }