.ep-detail{font-family:Arial,sans-serif;color:#0f172a;}
.ep-detail h2{font-size:30px;margin:34px 0 16px;color:#0f172a;}
.ep-detail h3{font-size:22px;margin:28px 0 12px;color:#0f172a;}
.ep-detail p{font-size:16px;line-height:1.7;color:#475569;margin:0 0 18px;}

.ep-grade-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:18px;
    margin:22px 0 34px;
}

.ep-grade-card{
    border:1px solid #e5e7eb;
    border-radius:16px;
    padding:22px;
    background:#f8fafc;
}

.ep-grade-card strong{
    display:block;
    font-size:18px;
    margin-bottom:8px;
    color:#0f172a;
}

.ep-grade-card span{
    font-size:15px;
    line-height:1.6;
    color:#475569;
}

.ep-table-wrap{
    overflow-x:auto;
    margin:16px 0 30px;
}

.ep-table{
    width:100%;
    border-collapse:collapse;
    font-size:15px;
    background:#fff;
}

.ep-table th{
    background:#0f2747;
    color:#fff;
    padding:12px;
    text-align:center;
    border:1px solid #d1d5db;
}

.ep-table td{
    padding:12px;
    text-align:center;
    border:1px solid #e5e7eb;
    color:#334155;
}

.ep-spec-table{
    width:100%;
    border-collapse:collapse;
    font-size:15px;
    margin-top:14px;
}

.ep-spec-table th{
    background:#f1f5f9;
    color:#0f172a;
    text-align:left;
    padding:12px;
    border:1px solid #e5e7eb;
    width:35%;
}

.ep-spec-table td{
    padding:12px;
    border:1px solid #e5e7eb;
    color:#334155;
}

.ep-note{
    background:#eff6ff;
    border-left:4px solid #2563eb;
    padding:16px 18px;
    margin:18px 0 28px;
    color:#334155;
    font-size:15px;
    line-height:1.7;
}

@media(max-width:768px){
  .ep-grade-grid{
      grid-template-columns:1fr;
  }
}