.radio-guide { max-width: 1440px; margin: auto; }
.guide-hero, .guide-section { display: grid; grid-template-columns: 1.1fr 1fr; gap: 8vw; padding: 80px 5vw; }
.guide-hero { align-items: center; }
.guide-hero h1 { font: 500 clamp(43px, 5.2vw, 72px)/.98 Georgia, serif; letter-spacing: -.05em; margin: 25px 0; }
.guide-hero h1 em { color: var(--phosphor); }
.radio-guide p, .radio-guide dd { color: var(--muted); font: 17px/1.65 Georgia, serif; }
.radio-guide .signal-label { color: var(--phosphor); font: 700 10px/1.5 monospace; letter-spacing: .14em; }
.radio-guide .guide-intro { color: var(--paper); font-size: 23px; }
.radio-guide h2 { font: 400 clamp(32px, 4vw, 52px)/1.05 Georgia, serif; letter-spacing: -.035em; margin: 20px 0; }
.guide-note { background: var(--panel); border: 1px solid #535b4e; padding: 35px; box-shadow: 12px 12px 0 #090b09; position: relative; }
.guide-note::before { content: "FR-01 / FIELD GUIDE"; display: block; color: var(--muted); font: 9px monospace; letter-spacing: .15em; padding-bottom: 18px; margin-bottom: 24px; border-bottom: 1px solid var(--line); }
.guide-note::after { content: "\0025cf  RECEIVE / LEARN / CONNECT"; display: block; color: var(--phosphor); font: 9px/1.5 monospace; letter-spacing: .1em; border-top: 1px solid var(--line); padding-top: 18px; margin-top: 25px; }
.guide-section { border-top: 1px solid var(--line); scroll-margin-top: 25px; }
.tuning-card { align-self: start; border: 1px solid #535b4e; background: var(--panel); padding: 24px; box-shadow: 12px 12px 0 #090b09; }
.tuning-card > strong { display: block; color: #182016; background: #d7dfc5; padding: 26px 18px; border: 1px solid #88977c; box-shadow: inset 0 0 30px #49644344; font: 700 clamp(30px, 4vw, 50px)/1.2 monospace; letter-spacing: -.06em; overflow-wrap: anywhere; }
.tuning-card > strong::after { content: "\002582 \002583 \002584 \002585 \002586 \002587 \002585 \002583 \002582"; display: block; margin-top: 18px; padding-top: 12px; border-top: 1px solid #728166; font: 18px/1 monospace; letter-spacing: .2em; }
.tuning-card > p:nth-of-type(2) { color: var(--phosphor); font: 700 12px/1.6 monospace; border-bottom: 1px solid var(--line); padding: 8px 0 20px; }
.tuning-card small { font-size: 15px; }
.radio-guide a:not(.primary-action), .back-link { color: var(--phosphor); text-decoration: underline; text-underline-offset: 4px; font: 700 12px/1.7 monospace; }
.radio-guide a:focus-visible, .back-link:focus-visible, .guide-link:focus-visible { outline: 2px solid var(--phosphor); outline-offset: 5px; }
.radio-terms { margin: 0; }
.radio-terms > div { border: 1px solid var(--line); border-left: 3px solid #68765f; background: var(--panel); padding: 20px 24px; margin-bottom: 10px; }
.radio-terms dt { font: 400 23px Georgia, serif; }
.radio-terms dd { margin: 8px 0 0; }
.license-steps { padding-left: 25px; margin: 0; }
.license-steps li { padding: 0 0 24px 10px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.license-steps li::marker { color: var(--phosphor); font: 700 14px monospace; }
.license-steps h3 { font: 400 23px Georgia, serif; margin: 16px 0; }
.guide-outro { border-top: 1px solid #68765f; padding: 65px 5vw; background: radial-gradient(ellipse at right, #29433244, transparent 70%), var(--panel); }
.guide-section > div:first-child > .signal-label { display: inline-block; padding: 8px 12px; border: 1px solid var(--line); background: var(--panel); }
.guide-outro p { max-width: 700px; }
@media (max-width: 800px) {
  .guide-hero, .guide-section { grid-template-columns: 1fr; padding: 45px 20px; gap: 30px; }
  .guide-note, .tuning-card { padding: 24px; }
  .guide-outro { padding: 45px 20px; }
  .back-link { font-size: 9px; }
}