.convert-container{max-width:820px;margin:30px auto;padding:10px;font-family:Segoe UI,sans-serif;color:#333}.convert-alert{max-width:820px;margin:20px auto 0;background-color:#fff4f4;color:#c00;border:1px solid #f5c2c2;padding:12px 16px;border-radius:8px;display:flex;justify-content:space-between;align-items:center;font-weight:500}.convert-alert-close{background:transparent;border:none;font-size:18px;cursor:pointer;color:#c00}.convert-upload-box{border:2px dashed #1890ff;border-radius:12px;padding:40px 20px;text-align:center;background-color:#f0f8ff;transition:background-color .3s,border-color .3s;cursor:pointer}.convert-upload-box:hover{background-color:#e6f7ff;border-color:#40a9ff}.convert-upload-label{display:flex;flex-direction:column;align-items:center;cursor:pointer}.convert-upload-icon{font-size:48px;margin-bottom:16px;color:#1890ff}.convert-upload-text strong{display:block;font-size:18px;margin-bottom:6px;color:#0c2e8a}.convert-upload-text span{font-size:14px;color:#555}.convert-file-card{display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid #e8eef5;border-radius:8px;background:#fff;padding:14px 16px;box-shadow:0 2px 10px rgba(0,0,0,.06)}.convert-file-name{display:flex;align-items:center;gap:12px;min-width:0}.convert-file-name span,.convert-file-name strong{display:block;overflow-wrap:anywhere}.convert-file-name span{color:#666;font-size:.9rem}.convert-pdf-icon{color:#e03e2d;font-size:1.4rem}.convert-remove-btn{border:none;background:#fff1f0;color:#f5222d;border-radius:8px;padding:9px 12px;cursor:pointer}.convert-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px;max-width:680px;margin-left:auto;margin-right:auto}.convert-mode-card{display:flex;align-items:center;gap:10px;min-height:52px;padding:12px 14px;border:1px solid #d9ecff;border-radius:8px;background:#fff;color:#253858;cursor:pointer;transition:border-color .2s,box-shadow .2s,background-color .2s}.convert-mode-card.active{border-color:#1890ff;background:#f0f8ff;box-shadow:0 4px 12px rgba(24,144,255,.14)}.convert-mode-card span{font-weight:600}.convert-output-container{max-width:500px;margin-left:auto;margin-right:auto}.convert-input{border-radius:8px;padding:10px 12px;font-size:1rem;width:100%;box-sizing:border-box;transition:all .2s}.convert-input:focus{border-color:#52c41a;box-shadow:0 0 5px rgba(82,196,26,.5)}.convert-btn-container{display:flex;justify-content:center}.convert-btn{background:#ff7b29;color:#fff;font-weight:600;font-size:1rem;padding:10px 20px;border-radius:8px;min-width:180px;border:none;cursor:pointer;transition:all .2s}.convert-btn:hover:not(:disabled){background-color:#45a049;box-shadow:0 4px 8px rgba(0,0,0,.2)}.convert-btn:disabled,.convert-remove-btn:disabled{opacity:.6;cursor:not-allowed}.convert-seo-content{max-width:900px;margin:50px auto;padding:24px;background:#fff;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,.08);line-height:1.7;font-size:1rem}.convert-seo-content h2{font-size:1.8rem;margin-bottom:16px;color:#222}.convert-seo-content li,.convert-seo-content p{color:#555}@media (max-width:768px){.convert-container{margin:20px auto;padding:10px 14px}.convert-container h2{font-size:1.45rem;line-height:1.3}.convert-upload-box{padding:30px 15px}.convert-upload-icon{font-size:40px}.convert-file-card{align-items:stretch;flex-direction:column}.convert-options{grid-template-columns:1fr}.convert-btn,.convert-remove-btn{width:100%}.convert-seo-content{padding:18px;font-size:.95rem}.convert-seo-content h2{font-size:1.5rem}}