:root{--bg: #fafaf7;--surface: #ffffff;--ink: #1a1a1a;--muted: #6b6b6b;--line: #e5e5e0;--accent: #1a1a1a;--danger: #a33;--radius: 4px;--serif: "Fraunces", Georgia, serif;--sans: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5}button{font-family:inherit;font-size:14px;padding:8px 14px;border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;border-radius:var(--radius)}button.secondary{background:transparent;color:var(--ink)}button.ghost{background:transparent;color:var(--muted);border-color:var(--line)}button:disabled{opacity:.5;cursor:not-allowed}input,textarea{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink);width:100%}textarea{resize:vertical}h1,h2,h3{font-family:var(--serif);font-weight:600;margin:0 0 12px}a{color:var(--ink)}.landing{max-width:560px;margin:14vh auto 0;padding:0 32px;text-align:center}.landing h1{font-size:48px;letter-spacing:-.02em;margin-bottom:16px}.landing p{color:var(--muted);font-size:17px;margin-bottom:32px}.app-shell{display:grid;grid-template-columns:280px 1fr;height:100vh}.sidebar{border-right:1px solid var(--line);padding:20px;overflow-y:auto;background:var(--surface);display:flex;flex-direction:column}.sidebar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.brand{font-family:var(--serif);font-weight:800;font-size:20px;letter-spacing:-.01em}.persona-list{display:flex;flex-direction:column;gap:4px;flex:1}.persona-item{padding:10px 12px;border-radius:var(--radius);cursor:pointer;border:1px solid transparent;font-size:14px}.persona-item:hover{background:var(--bg)}.persona-item.active{background:var(--bg);border-color:var(--line)}.persona-item .meta{color:var(--muted);font-size:12px;margin-top:2px}.sidebar-footer{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.main{overflow-y:auto;padding:40px 56px;max-width:920px}.panel{margin-bottom:40px}.panel h2{font-size:22px;margin-bottom:16px}.panel h3{font-size:14px;text-transform:uppercase;letter-spacing:.08em;font-family:var(--sans);font-weight:600;color:var(--muted);margin-bottom:8px}.row{display:flex;gap:10px;align-items:center}.stack{display:flex;flex-direction:column;gap:10px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.dna-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.dna-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}.dna-item h4{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 6px}.dna-item p,.dna-item ul{margin:0;font-size:14px}.dna-item ul{padding-left:18px}.empty{color:var(--muted);font-style:italic;padding:16px 0}.editor{display:grid;grid-template-columns:1fr 1fr;gap:24px;min-height:360px}.editor textarea{min-height:320px;font-size:15px;line-height:1.55}.output{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;font-family:var(--serif);font-size:17px;line-height:1.6;white-space:pre-wrap;min-height:320px;overflow-y:auto}.samples{display:flex;flex-direction:column;gap:6px}.sample-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.sample-row:last-child{border-bottom:none}.sample-row .meta{color:var(--muted);font-size:12px}.error{color:var(--danger);font-size:13px;margin:8px 0;padding:10px 14px;background:#fdecea;border:1px solid #f5c2c0;border-radius:var(--radius);line-height:1.4}.uploader{display:flex;gap:10px;align-items:center}.inline-form{display:flex;flex-direction:column;gap:10px;margin-top:14px;padding:14px;border:1px dashed var(--line);border-radius:var(--radius)}