.series-intro { padding-bottom: 28px; background: #f4f7fb; }
.series-intro .gas-breadcrumb { margin-bottom: 28px; }
.series-intro .gas-title { font-size: clamp(30px, 3vw, 48px); }
.series-compare-link, .series-back { display: inline-block; margin-top: 20px; color: #2469c5; font-weight: 600; text-decoration: none; }
.series-products__grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 110px 28px; margin-top: 110px; }
.series-products__grid .gas-product-card { display: flex; min-width: 0; }
.series-products__grid .gas-product-card__body { width: 100%; padding: 96px 24px 24px; }
.series-product-cta { align-self: flex-start; margin-top: auto; min-height: 36px; padding: 0 16px; font-size: 13px; font-weight: 600; }
.series-products__grid .gas-product-card p:last-of-type { margin-bottom: 24px; }
.series-comparison { background: #f5f8fc; }
.series-comparison__note { max-width: 1050px; color: #4d6073; font-size: 14px; line-height: 1.7; margin: 20px 0; }
.series-comparison__hint { color: #4d6073; font-size: 13px; margin: 20px 0 10px; }
.series-compare { max-width: 100%; overflow-x: auto; border: 1px solid #dce5f0; background: white; }
.series-compare:focus-visible { outline: 2px solid #3979f6; outline-offset: 3px; }
.series-compare table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; line-height: 1.6; }
.series-compare caption { text-align: left; padding: 14px 20px; color: #4d6073; }
.series-compare th, .series-compare td { min-width: 190px; max-width: 320px; padding: 15px 20px; border-bottom: 1px solid #e3eaf3; border-right: 1px solid #e3eaf3; text-align: left; vertical-align: top; }
.series-compare thead th { background: #183955; color: white; }
.series-compare thead a { color: white; text-underline-offset: 4px; }
.series-compare tbody th[scope="row"] { position: sticky; left: 0; z-index: 1; background: #f7f9fc; color: #183955; }
.series-compare__group th { background: #e7eff9; color: #183955; font-weight: 700; }
.series-back { margin-left: 24px; }
@media(max-width: 1050px) { .series-products__grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media(max-width: 640px) {
 .series-products__grid { grid-template-columns: minmax(0,1fr); }
 .series-compare th, .series-compare td { min-width: 150px; padding: 12px; }
 .series-compare tbody th[scope="row"] { min-width: 125px; max-width: 145px; }
 .series-back { display: block; margin-left: 0; }
}

/* Shared comparison treatment for all five families. */
.series-comparison { background: linear-gradient(160deg, #f3f7fd, #fafbfd); }
.compare-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin: 28px 0 12px; }
.compare-legend { display: flex; gap: 10px; flex-wrap: wrap; }
.compare-status { display: inline-flex; align-items: center; gap: 7px; padding: 5px 11px; border-radius: 6px; font-size: 12px; font-weight: 600; line-height: 1.5; white-space: nowrap; }
.compare-status::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; flex: 0 0 auto; }
.compare-status--standard { color: #22705a; background: #eaf6f0; }
.compare-status--expandable, .compare-status--optional { color: #326bbb; background: #edf3ff; }
.compare-status--unsupported, .compare-status--unspecified { color: #768394; background: #f1f3f6; font-weight: 400; }
.compare-difference-key { margin: 0; color: #5b7090; font-size: 12px; }
.compare-difference-key::before { content: ''; display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: #518cf5; margin-right: 8px; }
.series-compare { border-color: #e0e7f0; border-radius: 16px; box-shadow: 0 12px 36px rgba(32,59,94,.06); scrollbar-color: #b3c7e4 #eff4fa; scrollbar-width: thin; }
.series-compare caption { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.series-compare th, .series-compare td { padding: 17px 24px; border-right: 0; border-bottom: 1px solid #edf1f6; color: #465971; vertical-align: middle; }
.series-compare thead th { padding: 24px; background: #fff; color: #1f3552; border-bottom: 2px solid #dbe7f7; }
.series-compare thead th:first-child { width: 220px; }
.series-compare thead a { display: inline-flex; align-items: center; gap: 16px; color: #215899; font-size: 17px; font-weight: 650; text-decoration: none; }
.series-compare thead a:hover { color: #3979f6; }
.series-compare thead a:focus-visible { outline: 2px solid #3979f6; outline-offset: 5px; }
.compare-column-label { display: block; color: #8293a8; font-size: 10px; font-weight: 600; letter-spacing: 1.3px; margin-bottom: 9px; }
.series-compare tbody th[scope="row"] { background: #fff; font-weight: 500; color: #52647c; box-shadow: 1px 0 0 #edf1f6; }
.series-compare__group th { background: #f5f7fb; padding-top: 12px; padding-bottom: 12px; color: #273f5e; font-size: 12px; letter-spacing: .3px; }
.compare-group-number { display: inline-block; margin-right: 12px; color: #849bb7; font-size: 11px; }
.series-compare__different td, .series-compare .series-compare__different th[scope="row"] { background: #f0f6ff; }
.series-compare .series-compare__different th[scope="row"] { box-shadow: inset 3px 0 #518cf5, 1px 0 0 #e0eafa; color: #285c9e; font-weight: 600; }
.series-compare tbody tr:not(.series-compare__group):hover td { background: #f5f8fd; }
.series-comparison__note { font-size: 12px; color: #7a899c; max-width: 1000px; }
@media(max-width:640px) {
 .series-compare { border-radius: 12px; }
 .series-compare th, .series-compare td { padding: 14px; }
 .series-compare thead th { padding: 20px 14px; }
 .series-compare thead a { font-size: 14px; gap: 8px; }
 .compare-toolbar { gap: 12px; }
 .compare-legend { gap: 6px; }
 .compare-status { font-size: 11px; padding: 4px 8px; }
}