:root{--bg:#f7f9ff;--panel:#fff;--line:#d9e3f4;--text:#11284a;--muted:#647c9e;--primary:#325dff;--secondary:#6e6bff;--teal:#19c8b3}
body{margin:0;background:linear-gradient(180deg,#fbfcff,#eef4ff);font-family:Arial,"Segoe UI",Tahoma,sans-serif;color:var(--text)}
.app-shell{max-width:1180px;margin:0 auto;padding:28px}.hero-card,.panel,.card{background:var(--panel);border:1px solid var(--line);border-radius:24px;box-shadow:0 18px 45px rgba(50,93,255,.08)}
.hero-card{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:28px;margin-bottom:18px}.eyebrow{color:var(--primary);font-weight:800}.hero-card h1{font-size:42px;margin:10px 0}.hero-card p,.card p{color:var(--muted);line-height:1.8}.actions{display:flex;gap:10px;flex-wrap:wrap}button{border:0;border-radius:14px;padding:12px 16px;color:white;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));cursor:pointer}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}.card{padding:18px}.panel{padding:20px;margin-bottom:18px}textarea{width:100%;min-height:110px;border:1px solid var(--line);border-radius:14px;padding:14px;font:inherit}pre{direction:ltr;text-align:left;white-space:pre-wrap;background:#11234a;color:#dbe8ff;border-radius:16px;padding:16px;overflow:auto;max-height:420px}@media(max-width:900px){.hero-card{display:block}.grid{grid-template-columns:1fr}}