.cfg{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:clamp(20px,3vw,40px);align-items:start}
@media (max-width:960px){.cfg{grid-template-columns:minmax(0,1fr)}}
.cfg fieldset{border:0;padding:0;margin:0 0 28px;min-width:0}
.cfg legend{font:700 1.15rem var(--f-d);margin-bottom:12px;padding:0;display:flex;align-items:center;gap:10px}
.cfg legend .n{width:28px;height:28px;border-radius:50%;background:var(--ink);color:var(--lantern);display:grid;place-items:center;font-size:.85rem}
.opts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.opts.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:700px){.opts,.opts.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
.opt{position:relative;perspective:900px;cursor:pointer;display:block}
.opt input{position:absolute;opacity:0;width:1px;height:1px}
.flip{display:grid;transition:transform .6s var(--ease);transform-style:preserve-3d;border-radius:18px;height:100%}
.face{grid-area:1/1;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:18px;padding:14px;background:var(--card);box-shadow:inset 0 0 0 2px var(--line);display:flex;flex-direction:column;gap:4px;min-height:132px}
.face .ico{width:34px;height:34px;color:var(--ink)}
.face b{font:700 1rem/1.2 var(--f-d)}
.face .p{font-size:.84rem;color:var(--muted)}
.face.back{transform:rotateY(180deg);background:var(--ink);color:var(--paper);box-shadow:inset 0 0 0 2px var(--lantern)}
.face.back .p{color:var(--on-dark-muted)}
.face.back ul{margin:2px 0 0;padding-left:1em;font-size:.8rem;color:var(--on-dark)}
.face.back .sel{display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;color:var(--ink);background:var(--lantern);border-radius:999px;padding:2px 9px;align-self:flex-start}
.opt:hover .face.front{box-shadow:inset 0 0 0 2px var(--lantern)}
.opt input:checked + .flip{transform:rotateY(180deg)}
.opt input:focus-visible + .flip{outline:3px solid var(--ink);outline-offset:3px}
.opt input:disabled + .flip{opacity:.42;cursor:not-allowed}
.stepper{display:inline-flex;align-items:center;background:var(--card);border-radius:999px;box-shadow:inset 0 0 0 2px var(--line);padding:4px}
.stepper button{width:44px;height:44px;border-radius:50%;border:0;background:var(--paper-2);font:700 1.3rem var(--f-b);color:var(--ink);cursor:pointer}
.stepper button:hover{background:var(--lantern-soft)}
.stepper output{min-width:96px;text-align:center;font:700 1.1rem var(--f-d)}
.cfg-msg{font-size:.85rem;color:var(--coral-ink);min-height:1.3em;margin-top:8px}