:root{--c-bg: #f8fafc;--c-surface: #ffffff;--c-border: #e2e8f0;--c-text: #1e293b;--c-muted: #64748b;--c-accent: #1e293b;--c-accent-hover: #334155;--c-teal: #0f766e;--c-teal-hover: #115e59;--c-pass: #22c55e;--c-warn: #eab308;--c-fail: #ef4444;--radius: 8px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font);background:var(--c-bg);color:var(--c-text)}.auth-gate{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.auth-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:12px;padding:40px;max-width:380px;width:100%;text-align:center}.auth-card h1{font-size:22px;margin:12px 0 6px}.auth-card p{color:var(--c-muted);font-size:14px;margin-bottom:20px}.auth-card input{width:100%;padding:10px 14px;border:1px solid var(--c-border);border-radius:var(--radius);font-size:14px;margin-bottom:12px}.auth-card button{width:100%;padding:10px;background:var(--c-accent);color:#fff;border:none;border-radius:var(--radius);font-weight:600;cursor:pointer;font-size:14px}.auth-card button:hover{background:var(--c-accent-hover)}.error-text{color:var(--c-fail);font-size:13px;margin-top:10px}.editor-app{max-width:920px;margin:0 auto;padding:0 16px 40px}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--c-border);margin-bottom:24px}.top-bar-left{display:flex;align-items:center;gap:10px}.top-bar h1{font-size:20px;font-weight:700}.brand-pill{background:var(--c-accent);color:#fff;font-weight:700;font-size:12px;padding:3px 10px;border-radius:4px;letter-spacing:1px}.btn-primary{padding:10px 24px;background:var(--c-accent);color:#fff;border:none;border-radius:var(--radius);font-weight:600;font-size:14px;cursor:pointer}.btn-primary:hover{background:var(--c-accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{padding:8px 16px;border:1px solid var(--c-border);border-radius:6px;background:var(--c-surface);font-size:13px;font-weight:500;cursor:pointer}.btn-secondary:hover{background:#f1f5f9}.btn-accent{padding:8px 16px;border:none;border-radius:6px;background:var(--c-teal);color:#fff;font-size:13px;font-weight:600;cursor:pointer}.btn-accent:hover{background:var(--c-teal-hover)}.btn-accent:disabled{opacity:.5;cursor:not-allowed}.btn-refine{padding:8px 16px;border:none;border-radius:6px;background:#7c3aed;color:#fff;font-size:13px;font-weight:600;cursor:pointer}.btn-refine:hover{background:#6d28d9}.btn-refine:disabled{opacity:.5;cursor:not-allowed}.btn-text{background:none;border:none;color:var(--c-muted);font-size:13px;cursor:pointer;text-decoration:underline}.error-banner{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;padding:10px 14px;border-radius:var(--radius);margin-bottom:16px;font-size:13px}.loading-banner{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af;padding:10px 14px;border-radius:var(--radius);margin-bottom:16px;font-size:13px}.brief-panel{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);margin-bottom:18px}.brief-toggle{width:100%;text-align:left;padding:12px 16px;background:none;border:none;font-size:14px;font-weight:600;cursor:pointer;color:var(--c-text)}.brief-fields{padding:0 16px 16px;display:flex;flex-direction:column;gap:10px}.field-row label{display:block;font-size:12px;font-weight:600;color:var(--c-muted);margin-bottom:3px;text-transform:uppercase;letter-spacing:.4px}.field-row input{width:100%;padding:8px 12px;border:1px solid var(--c-border);border-radius:6px;font-size:13px}.field-label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}.type-selector{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}.type-btn{flex:1 1 140px;padding:10px 14px;border:1px solid var(--c-border);border-radius:var(--radius);background:var(--c-surface);cursor:pointer;text-align:left}.type-btn strong{display:block;font-size:14px}.type-btn span{display:block;font-size:12px;color:var(--c-muted)}.type-btn.active{border:2px solid var(--c-accent);background:#f1f5f9}.draft-input{width:100%;padding:14px;border:1px solid var(--c-border);border-radius:var(--radius);font-size:14px;line-height:1.6;resize:vertical;font-family:var(--font)}.input-footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px}.word-count{font-size:13px;color:var(--c-muted)}.action-bar{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.view-tabs{display:flex;align-items:center;gap:4px;border-bottom:1px solid var(--c-border);margin-bottom:0}.tab-btn{padding:8px 16px;border:none;background:none;font-size:13px;font-weight:500;cursor:pointer;color:var(--c-muted);border-bottom:2px solid transparent;margin-bottom:-1px}.tab-btn.active{color:var(--c-accent);border-bottom-color:var(--c-accent);font-weight:600}.view-tabs .word-count{margin-left:auto}.tab-content{background:var(--c-surface);border:1px solid var(--c-border);border-top:none;border-radius:0 0 var(--radius) var(--radius);min-height:300px}.md-preview{padding:28px 32px;font-family:Georgia,Times New Roman,serif;font-size:15px;line-height:1.8;color:var(--c-text)}.md-preview h1{font-size:26px;line-height:1.3;margin:0 0 16px;font-family:var(--font)}.md-preview h2{font-size:20px;line-height:1.3;margin:28px 0 10px;font-family:var(--font)}.md-preview h3{font-size:17px;line-height:1.3;margin:22px 0 8px;font-family:var(--font)}.md-preview p{margin-bottom:14px}.md-preview hr{border:none;border-top:1px solid var(--c-border);margin:24px 0}.raw-md{padding:20px 24px;font-family:SF Mono,Menlo,Consolas,monospace;font-size:13px;line-height:1.7;white-space:pre-wrap;overflow-x:auto}.diff-container{display:grid;grid-template-columns:1fr 1fr;min-height:300px}.diff-pane{border-right:1px solid var(--c-border);overflow:auto}.diff-pane:last-child{border-right:none}.diff-header{padding:8px 14px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;position:sticky;top:0}.diff-header.original{background:#fef9c3;color:#854d0e}.diff-header.restructured{background:#dcfce7;color:#166534}.diff-content{padding:14px;font-size:13px;line-height:1.7;white-space:pre-wrap}.qa-card{background:#f8fafc;border:1px solid var(--c-border);border-radius:10px;padding:18px;margin-bottom:18px}.qa-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.qa-header h3{font-size:15px}.overall-badge{color:#fff;padding:4px 14px;border-radius:20px;font-weight:700;font-size:13px}.qa-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}.qa-item{background:var(--c-surface);border-radius:var(--radius);padding:10px 12px;border:1px solid #e5e7eb}.qa-label{font-size:11px;font-weight:700;color:#475569;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.score-bar-row{display:flex;align-items:center;gap:8px}.score-bar-track{flex:1;height:6px;background:#e5e7eb;border-radius:3px}.score-bar-fill{height:100%;border-radius:3px;transition:width .4s}.score-value{font-size:13px;font-weight:600;min-width:28px;text-align:right}.qa-note{font-size:12px;color:var(--c-muted);margin-top:4px;line-height:1.4}.qa-summary{margin-top:14px;padding:10px 12px;background:var(--c-surface);border-radius:var(--radius);border:1px solid #e5e7eb;font-size:13px;line-height:1.5}.qa-low-hint{margin-top:10px;font-size:12px;color:#7c3aed;font-weight:600}@media (max-width: 640px){.diff-container{grid-template-columns:1fr}.type-selector,.action-bar{flex-direction:column}.qa-grid{grid-template-columns:1fr}}