:root {
      --black: #000;
      --white: #fff;
      --gray: #666;
      --light-gray: #f2f2f5;
      --accent: #0071e3;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
      background-color: var(--light-gray);
      color: var(--black);
    }

    header {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 40px 20px 20px;
      background-color: var(--white);
      border-bottom: 1px solid #ddd;
      text-align: center;
      position: relative;
    }

    .logo {
      height: 60px;
      margin-bottom: 10px;
    }

    .home-link {
      font-size: 1.2rem;
      color: var(--gray);
      text-decoration: none;
    }

    .lang-switch {
      position: absolute;
      top: 20px;
      right: 30px;
      font-size: 0.9rem;
      font-weight: bold;
      cursor: pointer;
    }

    .container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      padding: 80px 10vw;
      gap: 80px;
      background-color: var(--white);
      border-radius: 20px;
      box-shadow: 0 8px 30px rgba(0,0,0,0.05);
      margin: 60px auto;
      max-width: 1400px;
    }

    .column {
      padding: 0 10px;
    }

    h2 {
      font-size: 1.6rem;
      margin-bottom: 24px;
      color: var(--accent);
    }

    p {
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 18px;
    }

    @media (max-width: 768px) {
      .container {
        padding: 60px 20px;
        gap: 40px;
      }
    }