:root{--primary:#4f46e5;--accent:#10b981;--bg:#f8fafc;--card:#ffffff;--text:#0f172a;--muted:#64748b}*{box-sizing:border-box}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;background:var(--bg);color:var(--text);margin:0;padding:24px}.container{max-width:1100px;margin:0 auto}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.brand{display:flex;gap:12px;align-items:center}.logo{width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#06b6d4);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}h1{font-size:20px;margin:0}.subtitle{color:var(--muted);font-size:13px}.hero{background:linear-gradient(90deg,#eef2ff,#ecfeff);padding:20px;border-radius:10px;margin-bottom:18px;display:flex;justify-content:space-between;gap:16px;align-items:center}.hero-left{max-width:70%}.hero h2{margin:0 0 6px;font-size:20px}.hero p{margin:0;color:var(--muted)}.card{background:var(--card);border-radius:10px;padding:18px;box-shadow:0 6px 18px #0f172a0f}.grid{display:grid;grid-template-columns:1fr 420px;gap:18px}label{display:block;font-weight:600;margin-bottom:6px}textarea{width:100%;min-height:260px;padding:12px;border-radius:8px;border:1px solid #e6eef7;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;resize:vertical;background:#fbfdff;color:var(--text)}.actions{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}.btn{padding:10px 14px;border-radius:8px;border:0;cursor:pointer;font-weight:600}.btn-primary{background:var(--primary);color:#fff}.btn-ghost{background:#f1f5f9;color:var(--text);border:1px solid #e6eef7}.small{font-size:13px;color:var(--muted)}.samples{display:flex;gap:8px;margin-top:10px}.chip{padding:6px 10px;border-radius:999px;background:#fff;border:1px solid #e6eef7;cursor:pointer;font-weight:600}pre{background:#0b1220;color:#dbeafe;padding:12px;border-radius:8px;overflow:auto}.status{font-weight:700;color:var(--muted);margin-left:8px}.output{min-height:260px}@media (max-width:980px){.grid{grid-template-columns:1fr}.hero-left{max-width:100%}}nav{display:flex;align-items:center}nav a{margin-left:20px;text-decoration:none;color:var(--muted);font-weight:500;font-size:14px;transition:color .2s}nav a:hover,nav a.active{color:var(--primary)}