.osc-official { min-width:660px; }
.osc-platform { min-width:820px; }
.osc-train { margin-top:12px; font-size:.9rem; }
.osc-tool fieldset { border:1px solid var(--line); border-radius:10px; margin:16px 0; padding:14px; }
.osc-inputs { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; }
.osc-choice { display:inline-flex; align-items:center; gap:8px; margin-right:18px; min-height:44px; }
.osc-choice input { width:20px; height:20px; }
.osc-result { margin:18px 0; padding:16px; border:1px solid var(--line); border-radius:10px; background:var(--soft); }
.osc-result p { margin:4px 0; }
.osc-error { color:#a32222; }
.osc-pass dt { font-weight:700; margin-top:16px; }
.osc-pass dd { margin:4px 0 0; }
@media(max-width:480px) { .osc-inputs { grid-template-columns:1fr; } }