/* YourToolbox shared calculator/tool design system (bundled copy) */
.ytb-tool-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #212121;
}

.ytb-breadcrumb {
    font-size: 13px;
    color: #757575;
    margin-bottom: 16px;
}
.ytb-breadcrumb a {
    color: #1976D2;
    text-decoration: none;
}
.ytb-breadcrumb a:hover {
    text-decoration: underline;
}

.ytb-tool-article {
    margin-top: 32px;
    line-height: 1.7;
    font-size: 16px;
}
.ytb-tool-article h2 {
    font-size: 22px;
    color: #1976D2;
    margin: 32px 0 12px;
}
.ytb-tool-article p {
    margin: 0 0 16px;
    color: #333;
}

.ytb-tool-faq {
    margin-top: 32px;
}
.ytb-tool-faq h2 {
    font-size: 22px;
    color: #1976D2;
    margin-bottom: 16px;
}
.ytb-faq-item {
    border-bottom: 1px solid #E0E0E0;
    padding: 14px 0;
}
.ytb-faq-item h3 {
    font-size: 16px;
    margin: 0 0 8px;
    color: #212121;
}
.ytb-faq-item p {
    margin: 0;
    color: #555;
    font-size: 15px;
}

@media (max-width: 640px) {
    .ytb-tool-container { padding: 16px 12px 32px; }
    .ytb-tool-article h2 { font-size: 19px; }
}