html, body {
      font-family: 'PingFang TC', 'Microsoft JhengHei', Arial, sans-serif;
      background: #fff;
      margin: 0; padding: 0;
      color: #313131;
      font-size: 17px;
      line-height: 1.7;
    }
    .container {
      max-width: 750px;
      margin: 0 auto;
      background: #fff;
      box-sizing: border-box;
      padding: 22px 10px 50px 10px;
    }
    h1, h2, h3, h4, h5 {
      margin-top: 1.5em;
      margin-bottom: 0.5em;
      font-family: inherit;
    }
    h1 { font-size: 2.1em; color: #334155; font-weight: bold; line-height: 1.3;}
    h2 { font-size: 1.6em; color: #fa8c41; border-bottom: 2px solid #fee8d9; padding-bottom: 8px;}
    h3, h4 { font-size: 1.3em; color: #475569;}
    a { color: #fa8c41; text-decoration: underline;}
    img {
      max-width: 100%;
      height: auto;
      border-radius: 16px;
      display: block;
      margin: 18px auto;
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }
    .toc {
      background: #f8fafc;
      border-radius: 22px;
      padding: 20px 25px 10px 40px;
      margin: 20px 0;
      border: 1px solid #e2e8f0;
    }
    .toc li {
      margin-bottom: 8px;
    }
    .highlight {
      background: #fee8d9;
      border-radius: 18px;
      padding: 20px;
      margin: 24px 0;
    }
    .dotted-box {
      border: 2px dotted #fa8c41;
      border-radius: 20px;
      padding: 18px;
      margin: 20px 0;
      background: #fffdfa;
    }
    .faq-box {
      background: #f9f9f9;
      border-radius: 16px;
      padding: 18px;
      margin: 24px 0;
      border-left: 5px solid #fa8c41;
    }
    .callout {
      border-radius: 16px;
      padding: 18px;
      border: 1.5px solid #fa9141;
      margin: 24px 0;
      background: #fff6ee;
      text-align: center;
    }
    .main-phone {
      font-size: 1.6em;
      color: #e03e2d;
      font-weight: bold;
      letter-spacing: 1px;
      display: block;
      margin: 12px 0;
      text-decoration: none;
    }
    .btn-whatsapp {
        display: inline-block;
        background: #25D366;
        color: #fff !important;
        padding: 12px 28px;
        border-radius: 10px;
        text-decoration: none !important;
        font-weight: bold;
        margin-top: 10px;
    }
    .small-muted {
      color: #94a3b8;
      font-size: 0.9em;
      margin-top: 8px;
    }
    .breadcrumb {
        font-size: 14px;
        color: #64748b;
        margin-bottom: 20px;
    }
    @media (max-width:600px) {
      .container {padding: 10px 4vw;}
      h1 { font-size: 1.6em;}
      h2 { font-size: 1.3em;}
    }