.e90-panel{border:1px solid rgba(0,0,0,.12);border-radius:12px;margin:18px 0;overflow:hidden;background:#fff}
.e90-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;background:rgba(0,0,0,.03)}
.e90-bar__title{font-weight:700;letter-spacing:.2px}
.e90-bar__right{display:flex;align-items:center;gap:10px}
.e90-btn,.e90-select,.e90-input{border:1px solid rgba(0,0,0,.2);border-radius:10px;background:#fff}
.e90-btn{padding:8px 10px;cursor:pointer;font-weight:600}
.e90-btn:disabled{opacity:.55;cursor:not-allowed}
.e90-select{padding:8px 10px}
.e90-input{padding:10px;min-width:0}
.e90-panel__body{padding:14px}
.e90-panel__section h3{margin:0 0 10px}
.e90-panel__section p,.e90-panel__section li{line-height:1.55}
.e90-cipher-note{margin-top:10px;opacity:.8}
.e90-cipher-block{border:1px solid rgba(0,0,0,.12);border-radius:12px;margin:10px 0;overflow:hidden;background:#fff}
.e90-cipher-block__hdr,.e90-clue-acc__hdr{display:flex;justify-content:space-between;align-items:center;gap:10px;cursor:pointer}
.e90-cipher-block__hdr{padding:10px 12px;background:rgba(0,0,0,.02)}
.e90-cipher-block__title{font-weight:700}
.e90-cipher-block__body{padding:12px}
.e90-meta-note{margin:0 0 10px;opacity:.85}
.e90-cipher-block__clues{display:grid;grid-template-columns:1fr;gap:10px;margin-bottom:12px}
@media (min-width: 900px){.e90-cipher-block__clues{grid-template-columns:1fr 1fr}}
.e90-clue-acc{border:1px solid rgba(0,0,0,.10);border-radius:12px;overflow:hidden;background:#fff}
.e90-clue-acc__hdr{padding:10px;background:rgba(0,0,0,.02)}
.e90-clue-acc__body{padding:10px}
.e90-clue__label{font-weight:700;font-size:.9rem;opacity:.8}
.e90-clue__body{line-height:1.5;white-space:pre-wrap}
.e90-book-clue__row,.e90-attempt__row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:10px}
.e90-input--book{flex:1 1 110px;max-width:140px}
.e90-attempt__status{font-weight:600;opacity:.9}
.e90-attempt__msg{margin-top:8px;min-height:18px;font-size:.95rem}
.e90-answer-panel{margin-bottom:12px;padding:10px;border:1px solid rgba(0,0,0,.12);border-radius:12px;background:rgba(0,0,0,.02)}
.e90-answer-panel[hidden]{display:none}
.e90-answer-panel__label{font-size:.85rem;font-weight:700;opacity:.75;margin-bottom:6px}
.e90-answer-panel__body{font-weight:700;line-height:1.45}
.e90-solved{font-weight:700}