body{
  margin:0;
  font-family:Segoe UI,Roboto,sans-serif;
  background:#f6f8fb;
  color:#1f2937
}
.container{
  max-width:1100px;
  margin:auto;
  padding:30px 20px
}
h1{
  font-size:32px;
  margin-bottom:20px;
}
.spec-group{
  background:#fff;
  border-radius:14px;
  margin-bottom:20px;
  overflow:hidden;
  box-shadow:0 6px 18px rgba(0,0,0,.05)
}
.spec-title{
  background:#111827;
  color:#fff;
  padding:14px 18px;
  font-size:16px;
  font-weight:600;
}
.spec-table{
  width:100%;
  border-collapse:collapse;
}
.spec-table tr{
  border-bottom:1px solid #eee;
}
.spec-table tr:nth-child(even){
  background:#fafafa;
}
.spec-table td{
  padding:12px 16px;
  font-size:14px;
}
.spec-key{
  font-weight:600;
  width:40%;
}
.spec-value{
  color:#374151;
}
.spec-table tr:hover{
  background:#f1f5f9;
}
.breadcrumb{
  font-size:13px;
  margin-bottom:10px;
  opacity:.7
}
.breadcrumb a{
  color:#2563eb;
  text-decoration:none;
}
.back-review{
  display:inline-block;
  margin-top:20px;
  background:#ef4444;
  color:#fff;
  padding:10px 16px;
  border-radius:6px;
  text-decoration:none;
}
.back-review:hover{
  background:#dc2626;
}