.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;}
}