* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      font-size: 15px;
      line-height: 1.8;
      color: #333;
      background-color: #fff;
      padding: 20px 16px 40px;
      -webkit-text-size-adjust: 100%;
    }
    .header {
      text-align: center;
      padding: 20px 0 16px;
      margin-bottom: 24px;
      border-bottom: 1px solid #eee;
    }
    .header .app-name {
      font-size: 24px;
      font-weight: 700;
      color: #1a1a1a;
    }
    .header .app-name span {
      color: #6B5CE7;
    }
    .header .subtitle {
      font-size: 14px;
      color: #999;
      margin-top: 4px;
    }
    h2 {
      font-size: 17px;
      font-weight: 600;
      color: #1a1a1a;
      margin-top: 28px;
      margin-bottom: 12px;
      padding-left: 10px;
      border-left: 3px solid #6B5CE7;
    }
    h3 {
      font-size: 15px;
      font-weight: 600;
      color: #444;
      margin-top: 18px;
      margin-bottom: 8px;
    }
    p {
      margin-bottom: 12px;
      text-align: justify;
    }
    ul, ol {
      margin: 8px 0 12px 20px;
    }
    li {
      margin-bottom: 6px;
    }
    .faq-item {
      background-color: #f8f8f8;
      border-radius: 8px;
      padding: 14px;
      margin-bottom: 12px;
    }
    .faq-item .q {
      font-weight: 600;
      color: #1a1a1a;
      margin-bottom: 6px;
    }
    .faq-item .q::before {
      content: "Q: ";
      color: #6B5CE7;
      font-weight: 700;
    }
    .faq-item .a {
      color: #555;
      font-size: 14px;
    }
    .faq-item .a::before {
      content: "A: ";
      color: #6B5CE7;
      font-weight: 700;
    }
    .contact-card {
      background: linear-gradient(135deg, #6B5CE7 0%, #8B7BF7 100%);
      border-radius: 12px;
      padding: 20px;
      margin-top: 24px;
      color: #fff;
    }
    .contact-card h3 {
      color: #fff;
      margin-top: 0;
      font-size: 16px;
    }
    .contact-card p {
      margin-bottom: 8px;
      font-size: 14px;
    }
    .contact-card .email {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      text-decoration: none;
      display: inline-block;
      padding: 8px 16px;
      background: rgba(255,255,255,0.15);
      border-radius: 6px;
      margin-top: 4px;
    }
    .highlight {
      background-color: #f5f3ff;
      padding: 12px 14px;
      border-radius: 8px;
      margin: 12px 0;
      font-size: 14px;
      color: #555;
    }
    .lang-switch {
      text-align: right;
      margin-bottom: 8px;
      font-size: 13px;
    }
    .lang-switch a {
      color: #6B5CE7;
      text-decoration: none;
    }
    .lang-switch a:hover {
      text-decoration: underline;
    }