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

  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
  }

  .help-container {
    max-width: 1200px;
    margin: 0 auto;
  }

  /* Header */
  .help-header {
    background: white;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
  }

  .help-header h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 10px;
  }

  .help-header p {
    color: #666;
    font-size: 1.1rem;
  }

  .search-box {
    max-width: 500px;
    margin: 30px auto 0;
    position: relative;
  }

  .search-box input {
    width: 100%;
    padding: 15px 50px 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 50px;
    font-size: 16px;
    transition: all 0.3s;
  }

  .search-box input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102,126,234,0.1);
  }

  .search-box .material-icons {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
  }

  /* Quick Links */
  .quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
  }

  .quick-card {
    background: white;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
  }

  .quick-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  }

  .quick-card .material-icons {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 15px;
  }

  .quick-card h3 {
    color: #333;
    margin-bottom: 10px;
  }

  .quick-card p {
    color: #666;
    font-size: 14px;
  }

  /* Sections */
  .help-section {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    display: none;
  }

  .help-section.active {
    display: block;
    animation: fadeIn 0.5s ease;
  }

  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .section-title {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #667eea;
    display: inline-block;
  }

  .faq-item {
    margin-bottom: 25px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
  }

  .faq-question {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
  }

  .faq-question:hover {
    color: #667eea;
  }

  .faq-answer {
    padding: 15px 0 5px;
    color: #666;
    line-height: 1.6;
    display: none;
  }

  .faq-answer.show {
    display: block;
  }

  .step-list {
    list-style: none;
    padding: 0;
  }

  .step-list li {
    padding: 15px 0 15px 50px;
    margin-bottom: 15px;
    background: #f8f9fa;
    border-radius: 12px;
    position: relative;
  }

  .step-number {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: #667eea;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
  }

  .tip-box {
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
    padding: 15px 20px;
    border-radius: 10px;
    margin: 20px 0;
  }

  .warning-box {
    background: #fff3e0;
    border-left: 4px solid #ff9800;
    padding: 15px 20px;
    border-radius: 10px;
    margin: 20px 0;
  }

  .video-tutorial {
    background: #f5f5f5;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    margin: 20px 0;
  }

  .video-placeholder {
    background: #333;
    border-radius: 10px;
    padding: 60px;
    color: white;
    cursor: pointer;
  }
  .contact-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 20px;
    text-align: center;
  }

  .contact-card .material-icons {
    font-size: 48px;
    margin-bottom: 15px;
  }

  .contact-btn {
    background: white;
    color: #667eea;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
    transition: transform 0.3s;
  }

  .contact-btn:hover {
    transform: scale(1.05);
  }

  .back-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 100;
  }

  .back-btn:hover {
    transform: scale(1.1);
    background: #667eea;
    color: white;
  }

  @media (max-width: 768px) {
    .help-header h1 { font-size: 1.8rem; }
    .quick-links { grid-template-columns: repeat(2, 1fr); }
    .help-section { padding: 20px; }
  }

  .keyboard-shortcut {
    display: inline-block;
    background: #f0f0f0;
    padding: 5px 10px;
    border-radius: 8px;
    font-family: monospace;
    font-weight: bold;
    margin: 3px;
  }