:root {
    --color-bg: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    --color-text: #000000;
    --color-accent: #e10600;
    --color-border: #444;
    --color-box-bg: #ffffff;
    --font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    --spacing-base: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
  }

  * {
    box-sizing: border-box;
  }

  body {
    margin: 0;
    padding: var(--spacing-xl);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-family);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
  }

  header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
  }

  h1 {
    font-size: 2.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    font-weight: 700;
  }

  main {
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
  }

  article.tire-box {
    display: flex;
    background-color: var(--color-box-bg);
    border-radius: 14px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: 0 4px 10px rgba(0,0,0,0.7);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }



  article.tire-box img {
    max-width: 200px;
    width: 100%;
    height: auto;
    border-radius: 12px;
    flex-shrink: 0;
    box-shadow: 0 6px 12px rgba(0,0,0,0.8);
  }

  .text-content {
    flex: 1 1 auto;
  }

  h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-base);
    color: var(--color-accent);
    font-size: 1.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 6px;
  }

  p {
    margin: 0;
    padding-left: 14px;
    border-left: 4px solid var(--color-border);
  }

  @media (max-width: 640px) {
    body {
      padding: var(--spacing-lg);
    }
    article.tire-box {
      flex-direction: column;
      text-align: center;
      padding: var(--spacing-base);
    }
    article.tire-box img {
      max-width: 100%;
    }
    .text-content {
      padding-top: var(--spacing-base);
      padding-left: 0;
    }
    p {
      padding-left: 0;
      border-left: none;
      margin-top: var(--spacing-base);
    }
  }

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.main-navigation {
  background-color: #1a1a1a;
  padding: 10px 0;
}

.nav-list {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

.nav-list li {
  margin: 0 15px;
}

.nav-link {
  color: #ffffff;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

.nav-link:hover {
  color: #c4151c;
}