*{margin:0;padding:0;box-sizing:border-box}.app-layout{min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:#1a1a2e}.app-content{max-width:1000px;margin:0 auto;padding:32px 24px;width:100%}.upload-area{padding:40px;text-align:center;border:2px dashed #d9d9d9;border-radius:8px;background:#fafafa;cursor:pointer;transition:border-color .3s}.upload-area:hover{border-color:#1677ff}.report-summary{display:flex;gap:24px;margin-bottom:24px}.summary-card{flex:1;text-align:center;padding:24px;border-radius:8px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.summary-card .rate{font-size:36px;font-weight:700}.summary-card .label{font-size:14px;opacity:.9;margin-top:4px}.chapter-table{margin-bottom:24px}.fragment-item{padding:16px;margin-bottom:12px;border:1px solid #f0f0f0;border-radius:8px;background:#fff}.fragment-item .original{background:#fff2f0;padding:12px;border-radius:4px;margin-bottom:8px;border-left:3px solid #ff4d4f}.fragment-item .rewritten{background:#f6ffed;padding:12px;border-radius:4px;border-left:3px solid #52c41a}.download-section{text-align:center;padding:60px 0}.api-key-input{width:280px}