.ig-tool-guide {
    box-sizing: border-box;
    max-width: 960px;
    width: 100%;
    margin: 0 auto 40px;
    padding: 8px 16px;
    color: #25382b;
    line-height: 1.65;
    letter-spacing: 0;
    overflow-wrap: anywhere;
}
.ig-tool-guide__lead { font-size: 17px; }
.ig-tool-guide section { margin-top: 32px; }
.ig-tool-guide h2 { margin: 0 0 12px; font-size: 23px; line-height: 1.35; }
.ig-tool-guide h3 { margin: 20px 0 8px; font-size: 18px; line-height: 1.4; }
.ig-tool-guide p { margin: 0 0 16px; }
.ig-tool-guide a { color: #245f2b; text-decoration: underline; }
.ig-tool-guide a:focus-visible, .ig-tool-guide summary:focus-visible { outline: 2px solid #245f2b; outline-offset: 4px; }
.ig-tool-guide__choices { margin: 0; }
.ig-tool-guide__choices > div { display: grid; grid-template-columns: minmax(140px, 1fr) minmax(0, 3fr); gap: 16px; padding: 16px 0; border-top: 1px solid #d3dfd2; }
.ig-tool-guide__choices dt { font-weight: 700; }
.ig-tool-guide__choices dd { margin: 0; }
.ig-tool-guide__choices a { display: block; margin-top: 6px; }
.ig-tool-guide figure { margin: 24px 0; max-width: 800px; }
.ig-tool-guide img { display: block; width: 100%; height: auto; aspect-ratio: 5 / 3; object-fit: contain; border: 1px solid #d3dfd2; box-sizing: border-box; }
.ig-tool-guide figcaption { margin-top: 8px; color: #4b5f50; font-size: 14px; }
.ig-tool-guide ul, .ig-tool-guide ol { padding-left: 24px; margin: 0 0 16px; }
.ig-tool-guide li { margin-bottom: 8px; }
.ig-tool-guide details { border-top: 1px solid #d3dfd2; padding: 14px 0; }
.ig-tool-guide summary { cursor: pointer; font-weight: 600; }
.ig-tool-guide details p { margin: 12px 0 0; }
@media (max-width: 640px) {
    .ig-tool-guide { padding-right: 8px; padding-left: 8px; }
    .ig-tool-guide__choices > div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
}