.siam-faq {
    --faq-green: #159941;
    --faq-text: #152019;
    --faq-muted: #5d6961;
    --faq-border: #dce6de;
    --faq-soft: #f6faf7;
    padding: 72px 20px;
    background: #ffffff;
    color: var(--faq-text);
  }

  .siam-faq__inner {
    max-width: 960px;
    margin: 0 auto;
  }

  .siam-faq__heading {
    margin-bottom: 28px;
    padding-left: 16px;
    border-left: 3px solid var(--faq-green);
  }

  .siam-faq__eyebrow {
    display: block;
    margin-bottom: 8px;
    color: var(--faq-green);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0;
  }

  .siam-faq h2 {
    margin: 0;
    font-size: 30px;
    line-height: 1.25;
    letter-spacing: 0;
  }

  .siam-faq__list {
    border-top: 1px solid var(--faq-border);
  }

  .siam-faq__item {
    border-bottom: 1px solid var(--faq-border);
  }

  .siam-faq__item summary {
    display: grid;
    grid-template-columns: 42px 1fr 20px;
    gap: 14px;
    align-items: center;
    padding: 21px 4px;
    cursor: pointer;
    list-style: none;
  }

  .siam-faq__item summary::-webkit-details-marker {
    display: none;
  }

  .siam-faq__number {
    color: var(--faq-green);
    font-size: 13px;
    font-weight: 700;
  }

  .siam-faq__question {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.45;
  }

  .siam-faq__icon {
    position: relative;
    width: 16px;
    height: 16px;
  }

  .siam-faq__icon::before,
  .siam-faq__icon::after {
    position: absolute;
    top: 7px;
    left: 1px;
    width: 14px;
    height: 2px;
    background: var(--faq-green);
    content: "";
    transition: transform 0.2s ease;
  }

  .siam-faq__icon::after {
    transform: rotate(90deg);
  }

  .siam-faq__item[open] .siam-faq__icon::after {
    transform: rotate(0);
  }

  .siam-faq__item[open] summary {
    background: var(--faq-soft);
  }

  .siam-faq__answer {
    padding: 0 40px 22px 60px;
    background: var(--faq-soft);
  }

  .siam-faq__answer p {
    max-width: 780px;
    margin: 0;
    color: var(--faq-muted);
    font-size: 15px;
    line-height: 1.75;
  }

  @media (max-width: 640px) {
    .siam-faq {
      padding: 52px 16px;
    }

    .siam-faq h2 {
      font-size: 25px;
    }

    .siam-faq__item summary {
      grid-template-columns: 32px 1fr 18px;
      gap: 10px;
      padding: 18px 2px;
    }

    .siam-faq__question {
      font-size: 16px;
    }

    .siam-faq__answer {
      padding: 0 18px 20px 42px;
    }
  }