:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80}body{margin:0}#root{width:1126px;max-width:100%;min-height:100vh;margin:0 auto}*{box-sizing:border-box}body{color:#1f2933;background:#f5f7fa;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{flex-direction:column;min-height:100vh;display:flex}.header{background:#fff;border-bottom:1px solid #e5e7eb;padding:24px}.header h1{margin:0}.header p{color:#6b7280;margin-top:6px}.main{flex:1;grid-template-columns:320px 1fr;gap:24px;padding:24px;display:grid}.upload-card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:20px}.upload-card h2{margin-top:0}.upload-card input{width:100%;margin-top:12px}.empty-state{color:#6b7280;text-align:center;background:#fafafa;border:2px dashed #d1d5db;border-radius:8px;justify-content:center;align-items:center;font-size:16px;display:flex}.footer{color:#9ca3af;padding:12px 24px;font-size:13px}