:root {
    --primary: #e63d00;
    --secondary: #2a3b4c;
    --accent: #ffc107;
    --light: #f5f5f5;
    --dark: #1a1a1a;
    --text: #333333;
    --text-light: #f5f5f5;
    --background: #f0f0f0;
    --card-bg: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background-color: var(--background);
    line-height: 1.6;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
  }

  h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--secondary);
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
  }

  h2 {
    font-size: 2rem;
    margin-bottom: 1.2rem;
  }

  h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  p {
    margin-bottom: 1rem;
  }

  a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
  }

  a:hover {
    text-decoration: underline;
  }

  ul, ol {
    margin-bottom: 1.5rem;
    margin-left: 1.5rem;
  }

  li {
    margin-bottom: 0.5rem;
  }

  img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
  }

  .btn-primary {
    display: inline-block;
    background-color: var(--primary);
    color: var(--light);
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: background-color 0.3s ease;
  }

  .btn-primary:hover {
    background-color: #c03200;
    text-decoration: none;
  }

  .btn-submit {
    background-color: var(--primary);
    color: var(--light);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
  }

  .btn-submit:hover {
    background-color: #c03200;
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
  }

  /* Hero Section */
  .hero-section {
    position: relative;
    background-color: var(--secondary);
    color: var(--light);
    padding: 100px 0;
    text-align: center;
    overflow: hidden;
  }

  .bg-image {
    position: absolute;
    z-index: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    top: 0;
    left: 0;
  }

  .hero-section h1 {
    color: var(--light);
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .subtitle {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  }

  /* Guide Categories */
  .guide-categories {
    padding: 80px 0;
    background-color: var(--light);
  }

  .categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
  }

  .category-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
  }

  .category-card:hover {
    transform: translateY(-5px);
  }

  .category-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
  }

  .category-card h3 {
    padding: 20px 20px 10px;
    color: var(--secondary);
  }

  .category-card p {
    padding: 0 20px 20px;
    color: var(--text);
  }

  .category-card .btn-primary {
    margin: 0 20px 20px;
  }

  /* Guide Sections */
  .guide-section {
    padding: 80px 0;
    position: relative;
  }

  .beginner-guide {
    background-color: var(--light);
  }

  .tactics-guide {
    background-color: var(--secondary);
    color: var(--light);
    position: relative;
  }

  .tactics-guide h2, 
  .tactics-guide h3, 
  .tactics-guide h4 {
    color: var(--light);
  }

  .tanks-guide {
    background-color: var(--light);
    padding-bottom: 100px;
  }

  .guide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }

  .guide-text {
    padding: 20px;
  }

  .guide-media img {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
  }

  .tip-box {
    background-color: rgba(255, 193, 7, 0.1);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
  }

  .tip-box h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
  }

  .tip-box i {
    color: var(--accent);
  }

  .tactics-guide .tip-box {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .video-placeholder {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
  }

  .play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: rgba(230, 61, 0, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
  }

  .play-button i {
    color: white;
    font-size: 30px;
  }

  .video-placeholder:hover .play-button {
    background-color: rgba(230, 61, 0, 1);
  }

  /* Tank Guides Tabs */
  .tanks-tabs {
    margin-top: 40px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
  }

  .tabs-navigation {
    display: flex;
    background-color: var(--secondary);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .tabs-navigation::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    padding: 15px 20px;
    background: none;
    border: none;
    color: var(--light);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .tab-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .tab-btn.active {
    background-color: var(--primary);
  }

  .tab-content {
    display: none;
    padding: 30px;
  }

  .tab-content.active {
    display: block;
  }

  .tank-guide-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    align-items: start;
  }

  .tank-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
  }

  /* Community Tips */
  .community-tips {
    padding: 80px 0;
    background-color: var(--secondary);
    color: var(--light);
  }

  .community-tips h2 {
    color: var(--light);
    text-align: center;
  }

  .section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
  }

  .tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
  }

  .tip-card {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: transform 0.3s ease;
  }

  .tip-card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.15);
  }

  .tip-author {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
  }

  .tip-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
    border: 2px solid var(--accent);
  }

  .author-name {
    font-weight: 600;
    color: var(--accent);
  }

  .tip-content {
    font-style: italic;
  }

  /* Newsletter */
  .newsletter {
    padding: 80px 0;
    background-color: var(--light);
  }

  .newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
  }

  .newsletter-form {
    margin-top: 30px;
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: left;
  }

  .form-group {
    margin-bottom: 20px;
  }

  label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
  }

  input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
  }

  input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
  }

  /* Responsive */
  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }

    h2 {
      font-size: 1.7rem;
    }

    .guide-content {
      grid-template-columns: 1fr;
    }

    .tank-guide-content {
      grid-template-columns: 1fr;
    }

    .hero-section {
      padding: 60px 0;
    }

    .guide-section {
      padding: 60px 0;
    }

    .tabs-navigation {
      flex-wrap: nowrap;
      overflow-x: auto;
    }
  }

  @media (max-width: 480px) {
    .categories-grid {
      grid-template-columns: 1fr;
    }

    .tips-grid {
      grid-template-columns: 1fr;
    }

    .tab-btn {
      padding: 10px 15px;
      font-size: 0.9rem;
    }
  }