.section-help {
    position: absolute;
    z-index: 30;
    top: 4px;
    right: 5px;
    min-width: 0;
    height: 18px;
    padding: 0 2px;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: #003b70;
    font: bold 11px/18px "Microsoft JhengHei", Arial, sans-serif;
    text-align: center;
    cursor: pointer;
}
.section-help:hover,
.section-help:focus-visible {
    background: transparent;
    color: #001f4d;
    text-decoration: underline;
    outline: 1px dotted #003b70;
}
.section-help.inline {
    position: static;
    flex: 0 0 auto;
    margin-left: 6px;
}
.section-help-backdrop[hidden] { display: none; }
.section-help-backdrop {
    position: fixed;
    z-index: 10000;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0, 0, 0, .36);
}
.section-help-dialog {
    width: min(520px, calc(100vw - 40px));
    max-height: calc(100vh - 40px);
    overflow: auto;
    border: 2px solid #003b70;
    border-radius: 5px;
    background: #fffff2;
    box-shadow: 0 7px 24px rgba(0, 0, 0, .30);
    color: #222;
    font: 14px/1.7 "Microsoft JhengHei", Arial, sans-serif;
}
.section-help-head {
    display: flex;
    align-items: center;
    min-height: 38px;
    padding: 5px 8px 5px 14px;
    background: #003b70;
    color: #fff;
}
.section-help-title { flex: 1; font-size: 17px; font-weight: bold; }
.section-help-body { padding: 12px 18px 15px; }
.section-help-body p { margin: 0 0 7px; }
.section-help-body ol,
.section-help-body ul { margin: 4px 0 0; padding-left: 24px; }
.section-help-body li { margin: 3px 0; }
.section-help-body .help-note {
    margin-top: 9px;
    padding: 6px 9px;
    border-left: 4px solid #c00020;
    background: #fff0f0;
    color: #7c1426;
}
body.section-help-open { overflow: hidden; }