:root{--primary: #6366f1;--primary-hover: #4f46e5;--primary-light: #e0e7ff;--bg-body: #f8fafc;--surface: #ffffff;--border: #e2e8f0;--text-main: #0f172a;--text-secondary: #64748b;--text-muted: #94a3b8;--danger: #ef4444;--success: #22c55e;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-body);color:var(--text-main);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none;transition:color .2s}button{cursor:pointer;border:none;outline:none;font-family:inherit;transition:all .2s ease}.btn-primary{background:var(--primary);color:#fff;padding:10px 20px;border-radius:var(--radius-md);font-weight:500}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-primary:disabled{opacity:.7;cursor:not-allowed}.btn-secondary{background:#fff;border:1px solid var(--border);color:var(--text-main);padding:10px 20px;border-radius:var(--radius-md)}.btn-secondary:hover{background:var(--bg-body);border-color:#cbd5e1}.btn-danger{background:#fee2e2;color:var(--danger);padding:8px 16px;border-radius:var(--radius-md)}.btn-danger:hover{background:#fecaca}input,textarea{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);color:var(--text-main);font-size:14px;transition:all .2s;outline:none}input:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.markdown-body{font-size:15px;line-height:1.7;color:#334155}.markdown-body p{margin-bottom:1em}.markdown-body pre{background:#1e293b;border-radius:var(--radius-md);padding:1rem;margin:1rem 0;overflow-x:auto}.markdown-body code{font-family:Fira Code,monospace;font-size:.9em}.markdown-body p code{background:#f1f5f9;color:var(--primary);padding:2px 6px;border-radius:4px}