.rn-tool h2 { font-size: 1.15rem; margin: 28px 0 4px; padding-top: 12px; border-top: 1px solid var(--rn-border, #e2e6eb); }
.rn-tool h2 small { color: var(--rn-muted, #5b6774); font-weight: 400; font-size: .85rem; }
.rn-tool label input[type="checkbox"] { margin-left: 6px; }
.rn-tool #sc-result table td:last-child { text-align: right; }
.rn-tool fieldset { border: 1px solid var(--rn-border, #e2e6eb); border-radius: 12px; padding: 8px 16px 16px; margin: 18px 0; }
.rn-tool legend { font-weight: 700; color: var(--rn-primary, #0f4c5c); padding: 0 6px; }
.rn-tool .rn-yn { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin: 6px 0; }
.rn-tool .rn-yn span { flex: 1 1 260px; }