.hfdxarc-radio-frequency-page #sidebar,
.hfdxarc-radio-frequency-page #secondary,
.hfdxarc-radio-frequency-page .widget-area,
.hfdxarc-radio-frequency-page .sharedaddy,
.hfdxarc-radio-frequency-page .sd-sharing-enabled,
.hfdxarc-radio-frequency-page .jp-relatedposts,
.hfdxarc-radio-frequency-page h3.jp-relatedposts-headline,
.hfdxarc-radio-frequency-page .related-images,
.hfdxarc-radio-frequency-page #related-images,
.hfdxarc-radio-frequency-page .hfdxarc-related-images,
.hfdxarc-radio-frequency-page .related-posts,
.hfdxarc-radio-frequency-page h3:has(+ .sharedaddy) {
  display: none !important;
}

.hfdxarc-radio-frequency-page #content,
.hfdxarc-radio-frequency-page .site-content,
.hfdxarc-radio-frequency-page .content-area,
.hfdxarc-radio-frequency-page main,
.hfdxarc-radio-frequency-page article {
  max-width: none;
}

.hfdxarc-rbf-wrap {
  --rbf-bg: rgba(5, 12, 22, .96);
  --rbf-panel: rgba(15, 29, 44, .95);
  --rbf-panel-2: rgba(20, 38, 56, .93);
  --rbf-line: rgba(120, 205, 255, .22);
  --rbf-text: #eef7ff;
  --rbf-muted: #b9cad9;
  --rbf-cyan: #55dcff;
  --rbf-blue: #568fff;
  --rbf-gold: #ffd168;
  --rbf-green: #67e7ab;
  --rbf-red: #ff8f9d;
  width: 100%;
  max-width: 3600px;
  margin: 0 auto;
  color: var(--rbf-text);
  background:
    radial-gradient(circle at 8% 4%, rgba(86,143,255,.18), transparent 29%),
    radial-gradient(circle at 88% 12%, rgba(85,220,255,.14), transparent 33%),
    linear-gradient(180deg, rgba(3,9,17,.98), var(--rbf-bg));
  border: 1px solid rgba(120, 205, 255, .2);
  border-radius: 26px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0,0,0,.34);
  font-size: clamp(16px, .95vw, 20px);
  line-height: 1.72;
}

.hfdxarc-rbf-wrap * { box-sizing: border-box; }
.hfdxarc-rbf-wrap a { color: var(--rbf-cyan); }
.hfdxarc-rbf-wrap img { max-width: 100%; }

.hfdxarc-rbf-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  gap: clamp(24px, 4vw, 80px);
  align-items: center;
  padding: clamp(34px, 5vw, 92px);
  min-height: 520px;
  border-bottom: 1px solid var(--rbf-line);
  background: linear-gradient(135deg, rgba(14,28,44,.97), rgba(5,13,23,.9));
}

.hfdxarc-rbf-eyebrow,
.hfdxarc-rbf-kicker {
  color: var(--rbf-cyan);
  font-size: .8em;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.hfdxarc-rbf-hero h1 {
  margin: .2em 0 .28em;
  color: #fff;
  font-size: clamp(3rem, 6vw, 7.4rem);
  line-height: .96;
  letter-spacing: -.045em;
  text-wrap: balance;
}

.hfdxarc-rbf-hero p {
  max-width: 920px;
  margin: 0;
  color: var(--rbf-muted);
  font-size: clamp(1.1rem, 1.5vw, 1.6rem);
  line-height: 1.5;
}

.hfdxarc-rbf-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hfdxarc-rbf-badges span {
  padding: 8px 13px;
  border: 1px solid rgba(85,220,255,.27);
  border-radius: 999px;
  color: #e0f9ff;
  background: rgba(85,220,255,.08);
  font-size: .82em;
  font-weight: 700;
}

.hfdxarc-rbf-hero-art img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  filter: drop-shadow(0 24px 38px rgba(0,0,0,.36));
}

.hfdxarc-rbf-layout {
  display: grid;
  grid-template-columns: minmax(230px, 340px) minmax(0, 1fr);
  gap: clamp(24px, 3vw, 60px);
  padding: clamp(24px, 4vw, 70px);
}

.hfdxarc-rbf-toc {
  position: sticky;
  top: 24px;
  align-self: start;
  padding: 22px;
  border: 1px solid var(--rbf-line);
  border-radius: 18px;
  background: rgba(9, 21, 34, .9);
  box-shadow: 0 16px 36px rgba(0,0,0,.2);
}

.hfdxarc-rbf-toc strong {
  display: block;
  margin-bottom: 12px;
  color: #fff;
  font-size: 1.05em;
}

.hfdxarc-rbf-toc ol {
  display: grid;
  gap: 5px;
  margin: 0;
  padding-left: 1.2em;
}

.hfdxarc-rbf-toc a {
  display: inline-block;
  padding: 3px 0;
  color: var(--rbf-muted);
  text-decoration: none;
}

.hfdxarc-rbf-toc a:hover,
.hfdxarc-rbf-toc a:focus { color: var(--rbf-cyan); }

.hfdxarc-rbf-content { min-width: 0; }
.hfdxarc-rbf-content > p,
.hfdxarc-rbf-content > ul,
.hfdxarc-rbf-content > ol,
.hfdxarc-rbf-content > .hfdxarc-rbf-callout,
.hfdxarc-rbf-content > .hfdxarc-rbf-warning,
.hfdxarc-rbf-content > .hfdxarc-rbf-formula,
.hfdxarc-rbf-content > .hfdxarc-rbf-comparison,
.hfdxarc-rbf-content > .hfdxarc-rbf-rule-grid,
.hfdxarc-rbf-content > .hfdxarc-rbf-band-groups,
.hfdxarc-rbf-content > .hfdxarc-rbf-size-grid,
.hfdxarc-rbf-content > .hfdxarc-rbf-table-wrap {
  max-width: 1180px;
}

.hfdxarc-rbf-content h2 {
  scroll-margin-top: 30px;
  margin: clamp(50px, 6vw, 88px) 0 18px;
  padding-bottom: 12px;
  color: #fff;
  font-size: clamp(1.75rem, 2.6vw, 3rem);
  line-height: 1.15;
  letter-spacing: -.025em;
  border-bottom: 1px solid var(--rbf-line);
}

.hfdxarc-rbf-content h2:first-child { margin-top: 0; }
.hfdxarc-rbf-content p { color: var(--rbf-muted); }
.hfdxarc-rbf-content li { margin: .35em 0; color: var(--rbf-muted); }
.hfdxarc-rbf-content strong { color: #fff; }

.hfdxarc-rbf-callout,
.hfdxarc-rbf-warning,
.hfdxarc-rbf-formula {
  margin: 28px 0;
  padding: 20px 22px;
  border-radius: 16px;
  border: 1px solid rgba(85,220,255,.28);
  background: linear-gradient(135deg, rgba(85,220,255,.1), rgba(86,143,255,.08));
  color: #dcedf8;
}

.hfdxarc-rbf-warning {
  border-color: rgba(255,209,104,.4);
  background: rgba(255,209,104,.09);
}

.hfdxarc-rbf-formula {
  text-align: center;
  font-size: 1.18em;
  border-color: rgba(103,231,171,.36);
  background: rgba(103,231,171,.08);
}

.hfdxarc-rbf-formula span { color: var(--rbf-muted); font-size: .84em; }

.hfdxarc-rbf-rule-grid,
.hfdxarc-rbf-comparison,
.hfdxarc-rbf-band-groups,
.hfdxarc-rbf-size-grid {
  display: grid;
  gap: 16px;
  margin: 28px 0;
}

.hfdxarc-rbf-rule-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.hfdxarc-rbf-comparison { grid-template-columns: repeat(3, minmax(0,1fr)); }
.hfdxarc-rbf-band-groups { grid-template-columns: repeat(3, minmax(0,1fr)); }
.hfdxarc-rbf-size-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }

.hfdxarc-rbf-rule-grid > div,
.hfdxarc-rbf-comparison > div,
.hfdxarc-rbf-band-groups > div,
.hfdxarc-rbf-size-grid > div {
  padding: 20px;
  border: 1px solid var(--rbf-line);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(21,39,58,.94), rgba(10,22,36,.94));
  box-shadow: 0 14px 30px rgba(0,0,0,.15);
}

.hfdxarc-rbf-rule-grid strong,
.hfdxarc-rbf-comparison strong,
.hfdxarc-rbf-band-groups strong,
.hfdxarc-rbf-size-grid strong {
  display: block;
  margin-bottom: 5px;
  color: var(--rbf-cyan);
  font-size: 1.16em;
}

.hfdxarc-rbf-rule-grid span,
.hfdxarc-rbf-band-groups span,
.hfdxarc-rbf-size-grid span {
  display: block;
  color: var(--rbf-muted);
}

.hfdxarc-rbf-comparison p,
.hfdxarc-rbf-size-grid p { margin: .45em 0 0; }

.hfdxarc-rbf-diagram {
  margin: 34px 0 44px;
  padding: clamp(12px, 2vw, 24px);
  border: 1px solid var(--rbf-line);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(22,39,57,.94), rgba(10,22,36,.95));
  box-shadow: 0 20px 44px rgba(0,0,0,.21);
}

.hfdxarc-rbf-diagram img {
  display: block;
  width: 100%;
  max-height: 660px;
  object-fit: contain;
}

.hfdxarc-rbf-diagram figcaption {
  margin-top: 14px;
  color: #a9c3d5;
  text-align: center;
  font-size: .88em;
}

.hfdxarc-rbf-table-wrap {
  margin: 30px 0;
  overflow-x: auto;
  border: 1px solid var(--rbf-line);
  border-radius: 18px;
  background: rgba(10,22,36,.94);
  box-shadow: 0 16px 34px rgba(0,0,0,.17);
}

.hfdxarc-rbf-table {
  width: 100%;
  min-width: 760px;
  margin: 0;
  border-collapse: collapse;
  color: var(--rbf-muted);
}

.hfdxarc-rbf-table th,
.hfdxarc-rbf-table td {
  padding: 16px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(120,205,255,.14);
}

.hfdxarc-rbf-table th {
  color: #fff;
  background: rgba(85,220,255,.09);
  font-size: .9em;
  letter-spacing: .03em;
}

.hfdxarc-rbf-table tr:last-child td { border-bottom: 0; }
.hfdxarc-rbf-table tbody tr:hover { background: rgba(85,220,255,.04); }

.hfdxarc-rbf-calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(250px, .65fr);
  gap: 28px;
  align-items: end;
  margin-top: 76px;
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid rgba(103,231,171,.3);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(15,44,47,.9), rgba(14,28,44,.95));
}

.hfdxarc-rbf-calculator h2 {
  margin: .25em 0 .35em;
  padding: 0;
  border: 0;
}

.hfdxarc-rbf-calculator p { margin: 0; }
.hfdxarc-rbf-calc-controls { display: grid; gap: 9px; }
.hfdxarc-rbf-calc-controls label { font-size: .86em; font-weight: 700; color: #dff7ee; }
.hfdxarc-rbf-input-row { display: grid; grid-template-columns: minmax(0,1fr) 96px; gap: 9px; }

.hfdxarc-rbf-calc-controls input,
.hfdxarc-rbf-calc-controls select {
  width: 100%;
  min-height: 48px;
  padding: 10px 13px;
  border: 1px solid rgba(103,231,171,.34);
  border-radius: 10px;
  color: #fff;
  background: rgba(5,16,25,.82);
  font: inherit;
}

.hfdxarc-rbf-calc-controls option { color: #111; }

.hfdxarc-rbf-calc-controls button {
  min-height: 48px;
  padding: 11px 16px;
  border: 0;
  border-radius: 10px;
  color: #07151a;
  background: linear-gradient(135deg, var(--rbf-green), var(--rbf-cyan));
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.hfdxarc-rbf-results {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 14px;
}

.hfdxarc-rbf-results > div {
  padding: 18px;
  border: 1px solid rgba(103,231,171,.2);
  border-radius: 14px;
  background: rgba(6,18,28,.58);
}

.hfdxarc-rbf-results span,
.hfdxarc-rbf-results small {
  display: block;
  color: var(--rbf-muted);
}

.hfdxarc-rbf-results strong {
  display: block;
  margin: 5px 0 2px;
  color: #fff;
  font-size: 1.25em;
}

.hfdxarc-rbf-calc-note {
  grid-column: 1 / -1;
  padding-top: 4px;
  color: #9fb8c9 !important;
  font-size: .86em;
}

.hfdxarc-rbf-sources {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--rbf-line);
  font-size: .9em;
}

.hfdxarc-rbf-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 22px clamp(24px, 4vw, 70px);
  border-top: 1px solid var(--rbf-line);
  color: #9db4c5;
  background: rgba(3,10,17,.86);
  font-size: .85em;
}

@media (max-width: 1100px) {
  .hfdxarc-rbf-hero { grid-template-columns: 1fr; min-height: 0; }
  .hfdxarc-rbf-hero-art { max-width: 760px; }
  .hfdxarc-rbf-rule-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hfdxarc-rbf-results { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 900px) {
  .hfdxarc-rbf-layout { grid-template-columns: 1fr; }
  .hfdxarc-rbf-toc { position: relative; top: auto; }
  .hfdxarc-rbf-toc ol { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hfdxarc-rbf-comparison,
  .hfdxarc-rbf-band-groups { grid-template-columns: 1fr; }
  .hfdxarc-rbf-calculator { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hfdxarc-rbf-wrap { border-radius: 16px; }
  .hfdxarc-rbf-hero,
  .hfdxarc-rbf-layout { padding: 22px; }
  .hfdxarc-rbf-hero h1 { font-size: clamp(2.5rem, 13vw, 4.2rem); }
  .hfdxarc-rbf-toc ol { grid-template-columns: 1fr; }
  .hfdxarc-rbf-rule-grid,
  .hfdxarc-rbf-size-grid,
  .hfdxarc-rbf-results { grid-template-columns: 1fr; }
  .hfdxarc-rbf-footer { flex-direction: column; padding: 20px 22px; }
  .hfdxarc-rbf-table { min-width: 680px; }
}

@media print {
  .hfdxarc-rbf-wrap { color: #111; background: #fff; border: 0; box-shadow: none; }
  .hfdxarc-rbf-hero { min-height: 0; color: #111; background: #fff; }
  .hfdxarc-rbf-hero h1,
  .hfdxarc-rbf-content h2,
  .hfdxarc-rbf-content strong { color: #111; }
  .hfdxarc-rbf-hero p,
  .hfdxarc-rbf-content p,
  .hfdxarc-rbf-content li,
  .hfdxarc-rbf-table,
  .hfdxarc-rbf-footer { color: #333; }
  .hfdxarc-rbf-toc,
  .hfdxarc-rbf-calculator { display: none; }
  .hfdxarc-rbf-layout { display: block; padding: 20px; }
  .hfdxarc-rbf-diagram,
  .hfdxarc-rbf-table-wrap,
  .hfdxarc-rbf-rule-grid > div,
  .hfdxarc-rbf-comparison > div,
  .hfdxarc-rbf-band-groups > div,
  .hfdxarc-rbf-size-grid > div { break-inside: avoid; box-shadow: none; background: #fff; }
}