*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;background:#f0f4f8;min-height:100vh;display:flex;flex-direction:column;align-items:center}#app{width:100%;max-width:600px;padding:16px;display:flex;flex-direction:column;min-height:100vh}header{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:2px solid #d1e3f5;margin-bottom:24px}h1{font-size:1.6rem;color:#1a3a5c}.badge-area{display:flex;align-items:center;gap:4px;background:#1a3a5c;color:#fff;padding:6px 12px;border-radius:20px}.badge-label{font-size:.85rem}.badge-count{font-size:1.2rem;font-weight:700;min-width:24px;text-align:center}.upload-section{display:flex;flex-direction:column;align-items:center;gap:12px}.drop-zone{width:100%;border:2px dashed #90b4d4;border-radius:12px;padding:48px 24px;text-align:center;cursor:pointer;transition:background .2s,border-color .2s;background:#fff;position:relative}.drop-zone:hover,.drop-zone.dragover{background:#e8f4fd;border-color:#3182ce}.drop-text{color:#4a7fa5;font-size:1rem;pointer-events:none}.file-input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer;width:100%;height:100%}.error-msg{color:#e53e3e;background:#fff5f5;border:1px solid #fc8181;border-radius:8px;padding:8px 16px;font-size:.9rem;width:100%;text-align:center}.card-section{display:flex;flex-direction:column;align-items:center;gap:16px}.card{width:100%;min-height:320px;cursor:pointer;-webkit-user-select:none;user-select:none}.card-face{background:#fff;border-radius:16px;box-shadow:0 4px 20px #0000001a;padding:40px 24px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;min-height:320px}.card-character{font-size:6rem;font-weight:700;color:#1a3a5c;line-height:1}.card-pinyin{font-size:2.4rem;color:#3182ce;font-weight:600}.card-example{font-size:1.4rem;color:#4a5568}.card-hint{font-size:.8rem;color:#a0aec0;text-align:center}.speak-btn{background:none;border:2px solid #90cdf4;border-radius:50%;width:48px;height:48px;font-size:1.4rem;cursor:pointer;transition:background .15s}.speak-btn:hover:not(:disabled){background:#bee3f8}.speak-btn:disabled{opacity:.4;cursor:not-allowed;border-color:#cbd5e0}.score-hint{display:flex;gap:12px;font-size:.75rem;color:#718096;flex-wrap:wrap;justify-content:center}.score-hint span{background:#edf2f7;padding:2px 8px;border-radius:12px}.done-section{display:flex;flex-direction:column;align-items:center;gap:8px;padding:60px 24px;background:#fff;border-radius:16px;box-shadow:0 4px 20px #0000001a}.done-text{font-size:1.8rem;color:#1a3a5c}.done-sub{font-size:1rem;color:#718096}footer{margin-top:auto;padding:16px 0;text-align:center}.key-hint{font-size:.75rem;color:#a0aec0}.hidden{display:none!important}