* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: #2f3542;
    background: #f4f5f7;
  }
  
  .site-header {
    background: #ffffff;
    border-bottom: 1px solid #dcdde1;
    position: sticky;
    top: 0;
    z-index: 10;
  }
  
  nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
  }
  
  .logo {
    font-size: 20px;
    font-weight: 700;
    color: #2f3542;
    white-space: nowrap;
  }
  
  .nav-links {
    list-style: none;
    display: flex;
    gap: 22px;
    align-items: center;
  }
  
  .nav-links a {
    text-decoration: none;
    color: #2f3542;
    font-weight: 500;
  }
  
  .nav-links a:hover {
    text-decoration: underline;
  }
  
  .language-toggle {
    border: 1px solid #2f3542;
    background: #ffffff;
    color: #2f3542;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
  }
  
  .language-toggle:hover {
    background: #2f3542;
    color: #ffffff;
  }
  
  main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 48px 24px;
  }
  
  .hero {
    padding: 56px 0 48px;
  }
  
  .hero-content {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 48px;
    align-items: center;
  }
  
  .eyebrow {
    font-size: 15px;
    font-weight: 700;
    color: #57606f;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  
  .hero h1 {
    font-size: 56px;
    line-height: 1.1;
    margin-bottom: 24px;
    color: #2f3542;
  }
  
  .hero-description {
    font-size: 20px;
    max-width: 740px;
    margin-bottom: 32px;
    color: #57606f;
  }
  
  .hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }
  
  .button {
    display: inline-block;
    padding: 12px 22px;
    background: #2f3542;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 700;
  }
  
  .button:hover {
    opacity: 0.9;
  }
  
  .button.secondary {
    background: #ffffff;
    color: #2f3542;
    border: 1px solid #2f3542;
  }
  
  .hero-image {
    display: flex;
    justify-content: center;
  }
  
  .hero-image img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: 50%;
    border: 6px solid #ffffff;
    box-shadow: 0 10px 30px rgba(47, 53, 66, 0.18);
  }
  
  .section {
    background: #ffffff;
    margin-bottom: 32px;
    padding: 36px;
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(47, 53, 66, 0.06);
  }
  
  .section h2 {
    font-size: 30px;
    margin-bottom: 22px;
    color: #2f3542;
    border-bottom: 2px solid #dcdde1;
    padding-bottom: 10px;
  }
  
  .section p {
    color: #57606f;
    font-size: 17px;
  }
  
  .skill-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .skill-card {
    border: 1px solid #dcdde1;
    border-radius: 10px;
    padding: 22px;
    background: #fafafa;
  }
  
  .skill-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #2f3542;
  }
  
  .timeline {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }
  
  .timeline-item {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 28px;
  }
  
  .timeline-date {
    color: #57606f;
    font-weight: 700;
  }
  
  .timeline-content h3 {
    font-size: 20px;
    margin-bottom: 6px;
    color: #2f3542;
  }
  
  .company {
    font-weight: 700;
    margin-bottom: 12px;
  }
  
  .timeline-content ul {
    padding-left: 20px;
    color: #57606f;
  }
  
  .timeline-content li {
    margin-bottom: 8px;
  }
  
  .language-list {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
  }
  
  .language-list span {
    display: inline-block;
    background: #f4f5f7;
    border: 1px solid #dcdde1;
    padding: 10px 16px;
    border-radius: 999px;
    font-weight: 700;
    color: #2f3542;
  }
  
  .contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .contact-grid h3 {
    font-size: 18px;
    margin-bottom: 6px;
    color: #2f3542;
  }
  
  .contact-grid a {
    color: #2f3542;
    text-decoration: none;
  }
  
  .contact-grid a:hover {
    text-decoration: underline;
  }
  
  footer {
    text-align: center;
    padding: 32px 24px;
    color: #747d8c;
  }
  
  @media (max-width: 800px) {
    nav {
      flex-direction: column;
      align-items: flex-start;
    }
  
    .nav-links {
      flex-wrap: wrap;
      gap: 14px;
    }
  
    .hero-content {
      grid-template-columns: 1fr;
    }
  
    .hero-image {
      justify-content: flex-start;
    }
  
    .hero h1 {
      font-size: 42px;
    }
  
    .hero-description {
      font-size: 18px;
    }
  
    .skill-grid {
      grid-template-columns: 1fr;
    }
  
    .timeline-item {
      grid-template-columns: 1fr;
      gap: 8px;
    }
  
    .contact-grid {
      grid-template-columns: 1fr;
    }
  
    .section {
      padding: 28px;
    }
  }