:root{
  --bg:#f6f7fb;
  --card:#fff;
  --accent:#1f7ed9;
  --muted:#666;
}
*{box-sizing:border-box;font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;}
html,body{height:100%;margin:0;background:var(--bg);display:flex;align-items:center;justify-content:center;}
main{width:100%;max-width:420px;padding:24px;}
.product{background:var(--card);border-radius:12px;padding:20px;box-shadow:0 6px 18px rgba(20,30,60,0.08);display:flex;flex-direction:column;gap:16px}
.meta h1{margin:0;font-size:20px}
.price{margin:0;color:var(--accent);font-weight:600}
.desc{margin:6px 0 0;color:var(--muted)}
.actions{display:flex;gap:10px}
button{background:var(--accent);color:#fff;border:0;padding:12px 16px;border-radius:8px;font-size:16px;cursor:pointer;flex:1}
button:disabled{opacity:0.6;cursor:default}
footer{margin-top:12px;text-align:center;color:var(--muted);font-size:13px}