/* Book 4 interface override: SIGNAL/NOISE // Network Wars // 2014–2019 */
body.fn-book4-page,
body.fn-book4-reader-body{
  --bg:#020407;
  --panel:#061018;
  --panel2:#091d24;
  --ink:#eafff8;
  --muted:#9fc8c1;
  --cyan:#35ffe7;
  --mag:#ff2f7d;
  --amber:#ffec6e;
  --green:#7dff8a;
  --line:rgba(53,255,231,.30);
  --shadow:rgba(255,47,125,.24);
}

body.fn-book4-page{
  background:
    radial-gradient(circle at 12% 0%,rgba(255,47,125,.20),transparent 34%),
    radial-gradient(circle at 86% 8%,rgba(53,255,231,.18),transparent 36%),
    radial-gradient(circle at 50% 100%,rgba(125,255,138,.10),transparent 44%),
    linear-gradient(180deg,#020407,#03080c 48%,#000);
}

.fn-book4-page .fn-bootflash-title{
  color:var(--cyan);
}

.fn-book4-page .fn-bootflash-sub{
  color:var(--amber);
}

.fn-book4-page .fn-hero{
  grid-template-columns:minmax(220px,310px) minmax(0,1fr);
  background:
    linear-gradient(135deg,rgba(255,47,125,.12),rgba(53,255,231,.08)),
    repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 5px),
    rgba(0,0,0,.58);
}

.fn-book4-page .fn-hero:after{
  content:"SIGNAL/NOISE // NETWORK WARS // NEPHTEK BIO-SUBSTRATE WARNING";
  position:absolute;
  left:22px;
  right:22px;
  bottom:12px;
  color:rgba(125,255,138,.80);
  font-family:'Share Tech Mono',monospace;
  font-size:10px;
  letter-spacing:.12em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.fn-book4-page .fn-cover-card{
  max-width:290px;
  background:
    radial-gradient(circle at 50% 10%,rgba(53,255,231,.19),transparent 38%),
    linear-gradient(180deg,rgba(255,47,125,.13),rgba(125,255,138,.08)),
    #041016;
}

.fn-book4-page .fn-lore-card{
  background:
    linear-gradient(180deg,rgba(53,255,231,.05),rgba(255,47,125,.045)),
    rgba(0,0,0,.48);
}

.fn-book4-page .fn-lore-card b{
  color:var(--cyan);
}

.fn-book4-page .fn-signal-strip{
  color:var(--amber);
  border-color:rgba(255,47,125,.34);
  background:
    repeating-linear-gradient(90deg,rgba(53,255,231,.10) 0 8px,rgba(255,47,125,.08) 8px 16px,transparent 16px 24px),
    rgba(0,0,0,.44);
}

.fn-book4-page .fn-card-flag{
  background:linear-gradient(135deg,rgba(53,255,231,.95),rgba(255,47,125,.78)) !important;
}

.fn-book4-page .fn-backtrace-book-card.is-current .fn-card-flag{
  background:linear-gradient(135deg,var(--amber),var(--green)) !important;
}

.fn-book4-reader-body{
  background:
    radial-gradient(circle at 15% 0%,rgba(255,47,125,.105),transparent 34%),
    radial-gradient(circle at 85% 0%,rgba(53,255,231,.105),transparent 34%),
    #041016;
}

/* Book 4 final layout pass: match Book 1/6 proportions, keep SIGNAL/NOISE identity */
body.fn-book4-page .fn-shell{
  width:min(1160px,94vw);
}

body.fn-book4-page .fn-hero{
  grid-template-columns:minmax(190px,255px) minmax(0,1fr);
  gap:26px;
  padding:24px;
  align-items:center;
}

body.fn-book4-page .fn-cover-card{
  max-width:245px;
  padding:11px;
  margin:0 auto;
}

body.fn-book4-page .fn-cover-card img{
  max-height:365px;
  width:100%;
  object-fit:cover;
  border-radius:10px;
}

body.fn-book4-page .fn-cover-kicker{
  font-size:10px;
  letter-spacing:.14em;
  margin-bottom:8px;
}

body.fn-book4-page .fn-cover-sub{
  font-size:11px;
  line-height:1.25;
  margin-top:9px;
}

body.fn-book4-page .fn-cover-card .fn-btn{
  min-height:38px;
  padding:9px 10px;
  font-size:11px;
  margin-top:10px;
}

body.fn-book4-page .fn-title{
  font-size:clamp(38px,5.4vw,72px);
}

body.fn-book4-page .fn-subtitle{
  font-size:clamp(17px,2.2vw,25px);
  margin-bottom:14px;
}

body.fn-book4-page .fn-copy{
  font-size:15.5px;
  line-height:1.62;
  max-width:68ch;
}

body.fn-book4-page .fn-actions{
  margin-top:18px;
}

/* More like Book 6's compact cover strip */
body.fn-book4-page .fn-backtrace-series-covers{
  max-width:1080px;
  margin:34px auto 26px;
  padding:20px;
}

body.fn-book4-page .fn-backtrace-series-head{
  align-items:flex-end;
  margin-bottom:16px;
}

body.fn-book4-page .fn-backtrace-series-head h2{
  font-size:clamp(26px,3.5vw,44px);
}

body.fn-book4-page .fn-backtrace-series-head p{
  font-size:14.5px;
  line-height:1.48;
  max-width:52ch;
}

body.fn-book4-page .fn-backtrace-book-grid{
  grid-template-columns:repeat(6,minmax(104px,1fr));
  gap:12px;
}

body.fn-book4-page .fn-backtrace-book-card{
  padding:8px;
  border-radius:13px;
}

body.fn-book4-page .fn-card-flag{
  font-size:8.5px !important;
  padding:6px 4px !important;
  margin-bottom:7px !important;
}

body.fn-book4-page .fn-backtrace-cover-link,
body.fn-book4-page .fn-backtrace-cover-still{
  border-radius:9px;
}

body.fn-book4-page .fn-backtrace-cover-link img,
body.fn-book4-page .fn-backtrace-cover-still img{
  max-height:178px;
  aspect-ratio:2/3;
  object-fit:cover;
  border-radius:9px;
}

body.fn-book4-page .fn-backtrace-book-card h3{
  font-size:13px;
  margin:8px 0 6px;
  text-align:center;
}

body.fn-book4-page .fn-backtrace-book-cta,
body.fn-book4-page .fn-backtrace-book-stamp{
  font-size:8.5px !important;
  padding:6px 4px !important;
}

/* Book 4 lore panels: guided by SIGNAL/NOISE instead of generic neon soup */
body.fn-book4-page .fn-lore-grid{
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  margin:26px 0 30px;
}

body.fn-book4-page .fn-lore-card{
  min-height:145px;
  padding:16px;
  border-radius:16px;
  border-color:rgba(53,255,231,.20);
  background:
    linear-gradient(180deg,rgba(53,255,231,.045),rgba(255,47,125,.035)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 5px),
    rgba(0,0,0,.50);
}

body.fn-book4-page .fn-lore-card b{
  font-size:12px;
  letter-spacing:.12em;
}

body.fn-book4-page .fn-lore-card span{
  font-size:14px;
  line-height:1.5;
}

/* Book 4 signal tags: Matrix-Net / NephTek / PROMETHEUS dashboard feel */
body.fn-book4-page .fn-signal-strip{
  font-size:12px;
  letter-spacing:.08em;
  padding:12px 14px;
  margin:20px 0 24px;
}

/* Keep reader from feeling like it swallowed the page */
body.fn-book4-page .fn-section-head{
  margin:34px 0 14px;
}

body.fn-book4-page .fn-section-head h2{
  font-size:clamp(28px,3.5vw,46px);
}

body.fn-book4-page .fn-reader-frame{
  min-height:82vh;
}

/* Responsive sizing */
@media(max-width:1080px){
  body.fn-book4-page .fn-backtrace-book-grid{
    grid-template-columns:repeat(3,minmax(110px,1fr));
  }

  body.fn-book4-page .fn-backtrace-cover-link img,
  body.fn-book4-page .fn-backtrace-cover-still img{
    max-height:205px;
  }
}

@media(max-width:820px){
  body.fn-book4-page .fn-hero{
    grid-template-columns:1fr;
  }

  body.fn-book4-page .fn-cover-card{
    max-width:235px;
  }

  body.fn-book4-page .fn-cover-card img{
    max-height:345px;
  }

  body.fn-book4-page .fn-lore-grid{
    grid-template-columns:1fr;
  }
}

@media(max-width:560px){
  body.fn-book4-page .fn-backtrace-book-grid{
    grid-template-columns:repeat(2,minmax(115px,1fr));
  }

  body.fn-book4-page .fn-backtrace-cover-link img,
  body.fn-book4-page .fn-backtrace-cover-still img{
    max-height:190px;
  }
}

/* Book 4 cross-book design inheritance pass */
body.fn-book4-page .fn-interface-dna{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin:0 0 26px;
}

body.fn-book4-page .fn-interface-dna article{
  border:1px solid rgba(53,255,231,.18);
  border-radius:14px;
  padding:13px 14px;
  background:
    linear-gradient(180deg,rgba(53,255,231,.045),rgba(255,47,125,.035)),
    rgba(0,0,0,.46);
  box-shadow:0 14px 30px rgba(0,0,0,.22);
}

body.fn-book4-page .fn-interface-dna b{
  display:block;
  margin-bottom:6px;
  color:var(--amber);
  font-family:'Share Tech Mono',monospace;
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
}

body.fn-book4-page .fn-interface-dna span{
  color:var(--muted);
  font-size:13.5px;
  line-height:1.45;
}

/* Borrow Book 1 restraint: cover/card should support the page, not mug it */
body.fn-book4-page .fn-cover-card{
  box-shadow:
    inset 0 0 24px rgba(53,255,231,.10),
    0 14px 34px rgba(0,0,0,.40);
}

body.fn-book4-page .fn-hero{
  min-height:auto;
}

/* Borrow Book 6 restraint: compact, readable system backtrace */
body.fn-book4-page .fn-backtrace-book-grid{
  align-items:start;
}

body.fn-book4-page .fn-backtrace-book-card.is-current{
  transform:translateY(-3px);
}

/* Borrow Book 3 corruption without making the page look broken */
body.fn-book4-page .fn-lore-card:nth-child(2),
body.fn-book4-page .fn-lore-card:nth-child(3),
body.fn-book4-page .fn-lore-card:nth-child(6){
  border-color:rgba(255,47,125,.24);
}

/* Book 4 Network Wars dashboard feel */
body.fn-book4-page .fn-kicker,
body.fn-book4-page .fn-backtrace-series-kicker{
  color:var(--green);
}

body.fn-book4-page .fn-btn.alt{
  background:linear-gradient(135deg,rgba(255,236,110,.18),rgba(53,255,231,.10));
}

@media(max-width:900px){
  body.fn-book4-page .fn-interface-dna{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media(max-width:560px){
  body.fn-book4-page .fn-interface-dna{
    grid-template-columns:1fr;
  }
}

/* Book 4 inline reader: Book 6-style visible ToC + manuscript flow */
body.fn-book4-page{
  scroll-padding-top:24px;
}

body.fn-book4-page .fn-reader-dock{
  position:relative;
  z-index:1;
  margin:38px auto 80px;
  padding:22px;
  border:1px solid rgba(53,255,231,.24);
  border-radius:24px;
  background:
    radial-gradient(circle at 15% 0%,rgba(53,255,231,.10),transparent 34%),
    radial-gradient(circle at 85% 0%,rgba(255,47,125,.10),transparent 34%),
    rgba(0,0,0,.48);
  box-shadow:0 0 42px rgba(0,0,0,.52);
}

body.fn-book4-page .fn-reader-dock-head{
  margin:0 0 18px;
  padding-bottom:16px;
  border-bottom:1px solid rgba(53,255,231,.18);
}

body.fn-book4-page .fn-reader-dock-grid{
  display:grid;
  grid-template-columns:minmax(220px,280px) minmax(0,1fr);
  gap:18px;
  align-items:start;
}

body.fn-book4-page .fn-reader-toc-panel{
  position:sticky;
  top:16px;
  max-height:calc(100vh - 140px);
  overflow:auto;
  padding:12px;
  border:1px solid rgba(255,236,110,.20);
  border-radius:18px;
  background:
    linear-gradient(180deg,rgba(255,236,110,.055),rgba(53,255,231,.035)),
    rgba(0,0,0,.58);
  box-shadow:inset 0 0 22px rgba(53,255,231,.06);
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc{
  margin:0;
  padding:0;
  border:0;
  background:transparent;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc h2{
  margin:0 0 12px;
  font-size:22px;
  color:var(--amber);
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc ol{
  columns:1;
  margin:0;
  padding-left:22px;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc li{
  margin:0 0 8px;
  font-size:13px;
  line-height:1.35;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc a{
  color:var(--cyan);
  text-decoration:none;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc a:hover{
  color:var(--amber);
}

body.fn-book4-page .fn-reader-manuscript{
  min-width:0;
  padding:clamp(18px,3vw,34px);
  border:1px solid rgba(53,255,231,.18);
  border-radius:20px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.035),rgba(0,0,0,.12)),
    rgba(3,8,12,.82);
}

body.fn-book4-page .fn-reader-manuscript .fn-chapter{
  scroll-margin-top:26px;
  padding-top:16px;
  margin-top:18px;
  border-top:1px solid rgba(255,255,255,.09);
}

body.fn-book4-page .fn-reader-manuscript .fn-chapter:first-child{
  margin-top:0;
}

body.fn-book4-page .fn-reader-manuscript h2{
  font-family:'Cinzel',serif;
  font-size:clamp(25px,3vw,42px);
  line-height:1.1;
  color:var(--cyan);
  margin:0 0 18px;
  text-shadow:0 0 18px rgba(53,255,231,.18);
}

body.fn-book4-page .fn-reader-manuscript h3{
  font-family:'Share Tech Mono',monospace;
  color:var(--amber);
  letter-spacing:.08em;
  text-transform:uppercase;
  margin:26px 0 12px;
}

body.fn-book4-page .fn-reader-manuscript p,
body.fn-book4-page .fn-reader-manuscript li{
  color:var(--ink);
  font-size:17px;
  line-height:1.78;
}

body.fn-book4-page .fn-reader-manuscript p{
  margin:0 0 1.08em;
}

body.fn-book4-page .fn-reader-manuscript strong{
  color:var(--amber);
}

body.fn-book4-page .fn-reader-manuscript em{
  color:#fff;
}

body.fn-book4-page .fn-reader-manuscript .fn-toplink{
  display:inline-block;
  margin-top:22px;
  font-family:'Share Tech Mono',monospace;
  font-size:12px;
  color:var(--mag);
  letter-spacing:.08em;
  text-decoration:none;
  text-transform:uppercase;
}

/* Kill old iframe reader behavior if any stale markup survives */
body.fn-book4-page .fn-reader-frame-wrap{
  display:none;
}

@media(max-width:920px){
  body.fn-book4-page .fn-reader-dock-grid{
    grid-template-columns:1fr;
  }

  body.fn-book4-page .fn-reader-toc-panel{
    position:relative;
    top:auto;
    max-height:none;
  }

  body.fn-book4-page .fn-reader-toc-panel .fn-toc ol{
    columns:2;
  }
}

@media(max-width:620px){
  body.fn-book4-page .fn-reader-dock{
    padding:14px;
  }

  body.fn-book4-page .fn-reader-manuscript{
    padding:18px;
  }

  body.fn-book4-page .fn-reader-toc-panel .fn-toc ol{
    columns:1;
  }

  body.fn-book4-page .fn-reader-manuscript p,
  body.fn-book4-page .fn-reader-manuscript li{
    font-size:16px;
    line-height:1.72;
  }
}


/* FN BOOK4 HARVEST INDEX TOC POLISH V1 */
body.fn-book4-page .fn-reader-dock{
  border-color:rgba(53,255,231,.34);
  background:
    radial-gradient(circle at 12% 0%,rgba(53,255,231,.16),transparent 32%),
    radial-gradient(circle at 88% 8%,rgba(255,47,125,.13),transparent 34%),
    linear-gradient(135deg,rgba(3,10,18,.92),rgba(7,3,14,.96));
  box-shadow:
    0 0 54px rgba(0,0,0,.62),
    inset 0 0 80px rgba(53,255,231,.035);
}

body.fn-book4-page .fn-reader-dock::before{
  content:"BIO-DIGITAL THREAT MODEL // 2014–2019 // SIGNAL EMPIRE";
  display:block;
  margin:0 0 14px;
  padding:9px 12px;
  border:1px solid rgba(53,255,231,.18);
  border-radius:999px;
  color:#7fffe9;
  background:rgba(0,0,0,.32);
  font:700 11px 'Share Tech Mono',monospace;
  letter-spacing:.16em;
  text-transform:uppercase;
}

body.fn-book4-page .fn-reader-toc-panel{
  border-color:rgba(255,236,110,.34);
  background:
    linear-gradient(180deg,rgba(255,236,110,.075),rgba(53,255,231,.04)),
    repeating-linear-gradient(to bottom,rgba(255,255,255,.025) 0 1px,transparent 1px 7px),
    rgba(0,0,0,.68);
  box-shadow:
    inset 0 0 28px rgba(53,255,231,.08),
    0 0 24px rgba(53,255,231,.055);
}

body.fn-book4-page .fn-reader-toc-panel::before{
  content:"LIVE INDEX // CHRYSALIS WATCH";
  display:block;
  margin:0 0 10px;
  color:#ff5f9d;
  font:700 10px 'Share Tech Mono',monospace;
  letter-spacing:.15em;
  text-transform:uppercase;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc h2{
  color:#ffe86e;
  text-shadow:0 0 14px rgba(255,236,110,.18);
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc ol{
  list-style:none;
  padding-left:0;
  counter-reset:b4toc;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc li{
  counter-increment:b4toc;
  margin:0 0 7px;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc a{
  display:grid;
  grid-template-columns:34px 1fr;
  gap:9px;
  align-items:center;
  padding:8px 9px;
  border:1px solid rgba(53,255,231,.12);
  border-radius:11px;
  color:#bffff4;
  background:rgba(1,8,14,.52);
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc a::before{
  content:counter(b4toc, decimal-leading-zero);
  display:inline-grid;
  place-items:center;
  width:28px;
  height:24px;
  border-radius:8px;
  color:#061015;
  background:linear-gradient(135deg,#35ffe7,#ffe86e);
  font:900 10px 'Share Tech Mono',monospace;
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc li:last-child a::before{
  content:"EP";
  background:linear-gradient(135deg,#ff5f9d,#ffe86e);
}

body.fn-book4-page .fn-reader-toc-panel .fn-toc a:hover{
  color:#fff;
  border-color:rgba(255,236,110,.42);
  background:rgba(53,255,231,.08);
  transform:translateX(2px);
}

body.fn-book4-page .fn-reader-manuscript{
  border-color:rgba(53,255,231,.24);
  background:
    linear-gradient(180deg,rgba(255,255,255,.045),rgba(0,0,0,.16)),
    radial-gradient(circle at 100% 0%,rgba(255,47,125,.08),transparent 28%),
    rgba(3,8,12,.88);
}

body.fn-book4-page .fn-reader-manuscript .fn-chapter{
  border-top-color:rgba(53,255,231,.16);
}

body.fn-book4-page .fn-reader-manuscript .fn-chapter h2::before{
  content:"SIGNAL FILE";
  display:block;
  margin:0 0 8px;
  color:#ff5f9d;
  font:700 11px 'Share Tech Mono',monospace;
  letter-spacing:.16em;
  text-transform:uppercase;
}

body.fn-book4-page .fn-reader-manuscript p:first-of-type{
  color:#ffe86e;
  font-family:'Share Tech Mono',monospace;
  font-size:13px;
  letter-spacing:.06em;
}

/* FN BOOK4 TOP SHELL POLISH V1 */
body.fn-book4-page .fn-beta-series-portal,
body.fn-book4-page .fn-hero,
body.fn-book4-page .fn-interface-dna,
body.fn-book4-page .fn-lore-grid{
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

body.fn-book4-page .fn-hero{
  padding: clamp(1.4rem, 3vw, 2.4rem);
  border: 1px solid rgba(0,245,212,.34);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(0,245,212,.12), transparent 34%),
    linear-gradient(315deg, rgba(255,59,212,.11), transparent 38%),
    rgba(5,9,18,.88);
  box-shadow: 0 0 34px rgba(0,245,212,.16);
}

body.fn-book4-page .fn-hero-copy,
body.fn-book4-page .fn-interface-dna article,
body.fn-book4-page .fn-lore-grid article{
  border: 1px solid rgba(0,245,212,.24);
  border-radius: 22px;
  background: rgba(7,13,26,.82);
  box-shadow: inset 0 0 22px rgba(0,245,212,.08);
}

body.fn-book4-page .fn-hero-copy{
  padding: clamp(1rem, 2.4vw, 1.6rem);
}

body.fn-book4-page .fn-hero-copy p,
body.fn-book4-page .fn-interface-dna span,
body.fn-book4-page .fn-lore-grid span{
  color: rgba(235,245,255,.82);
  line-height: 1.65;
}

body.fn-book4-page .fn-kicker,
body.fn-book4-page .fn-interface-dna b,
body.fn-book4-page .fn-lore-grid b{
  color: #00f5d4;
  letter-spacing: .12em;
  text-transform: uppercase;
}

body.fn-book4-page .fn-interface-dna,
body.fn-book4-page .fn-lore-grid{
  gap: 1rem;
}

body.fn-book4-page .fn-interface-dna article,
body.fn-book4-page .fn-lore-grid article{
  padding: 1rem;
}


/* FN BOOK4 DASHBOARD CONDENSE PASS V1 */
body.fn-book4-page .fn-interface-dna,
body.fn-book4-page .fn-lore-grid{
  max-width: 980px;
}

body.fn-book4-page .fn-interface-dna article,
body.fn-book4-page .fn-lore-grid article{
  padding: .72rem .82rem;
  border-radius: 16px;
}

body.fn-book4-page .fn-interface-dna b,
body.fn-book4-page .fn-lore-grid b{
  font-size: .74rem;
  line-height: 1.25;
}

body.fn-book4-page .fn-interface-dna span,
body.fn-book4-page .fn-lore-grid span{
  font-size: .86rem;
  line-height: 1.45;
}

/* FN BOOK4 AFTER-TOC CONDENSE V1 */
body.fn-book4-page .fn-reader-dashboard-after-toc{
  margin-top: .9rem;
  display: grid;
  gap: .65rem;
}

body.fn-book4-page .fn-reader-dashboard-after-toc .fn-signal-strip{
  margin: 0;
  padding: .45rem .6rem;
  font-size: .66rem;
  line-height: 1.25;
  border-radius: 12px;
  opacity: .82;
}

body.fn-book4-page .fn-reader-dashboard-after-toc .fn-interface-dna,
body.fn-book4-page .fn-reader-dashboard-after-toc .fn-lore-grid{
  max-width: none;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .45rem;
}

body.fn-book4-page .fn-reader-dashboard-after-toc .fn-interface-dna article,
body.fn-book4-page .fn-reader-dashboard-after-toc .fn-lore-grid article{
  padding: .52rem .6rem;
  border-radius: 12px;
}

body.fn-book4-page .fn-reader-dashboard-after-toc .fn-interface-dna b,
body.fn-book4-page .fn-reader-dashboard-after-toc .fn-lore-grid b{
  font-size: .66rem;
  letter-spacing: .08em;
}

body.fn-book4-page .fn-reader-dashboard-after-toc .fn-interface-dna span,
body.fn-book4-page .fn-reader-dashboard-after-toc .fn-lore-grid span{
  font-size: .76rem;
  line-height: 1.32;
}

/* FN BOOK4 HAM RIG SKIN V1: 80s FUTURE-2010s SIGNAL EMPIRE */
body.fn-book4-page #fn-ham-bar{
  border-top: 1px solid rgba(0,245,212,.55);
  background:
    linear-gradient(115deg, rgba(255,47,125,.18), transparent 22%),
    linear-gradient(245deg, rgba(53,255,231,.18), transparent 28%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 14px),
    rgba(3,7,16,.96);
  box-shadow:
    0 -14px 42px rgba(0,245,212,.18),
    inset 0 0 30px rgba(255,47,125,.08);
}

body.fn-book4-page #fn-ham-bar::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(135deg, transparent 0 42%, rgba(0,245,212,.16) 42% 43%, transparent 43%),
    linear-gradient(45deg, transparent 0 58%, rgba(255,179,71,.12) 58% 59%, transparent 59%);
  mix-blend-mode:screen;
}

body.fn-book4-page #ham-tab{
  border: 1px solid rgba(0,245,212,.5);
  background:
    linear-gradient(90deg, rgba(0,245,212,.16), rgba(255,47,125,.12)),
    rgba(5,10,20,.96);
  color:#dffcff;
  text-shadow:0 0 10px rgba(0,245,212,.65);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 100%, 14px 100%);
}

body.fn-book4-page #ham-inner{
  gap: .7rem;
  background:
    radial-gradient(circle at 12% 40%, rgba(0,245,212,.14), transparent 28%),
    radial-gradient(circle at 72% 25%, rgba(255,47,125,.12), transparent 32%),
    rgba(4,8,18,.78);
}

body.fn-book4-page .ham-brand,
body.fn-book4-page .ham-freq-block,
body.fn-book4-page .ham-vu-block,
body.fn-book4-page .ham-dial-block,
body.fn-book4-page .ham-np-block,
body.fn-book4-page .ham-transport,
body.fn-book4-page .ham-leds{
  border-color: rgba(0,245,212,.24);
}

body.fn-book4-page .ham-brand-name,
body.fn-book4-page .ham-freq-num{
  color:#35ffe7;
  text-shadow:0 0 12px rgba(53,255,231,.65);
}

body.fn-book4-page .ham-brand-model,
body.fn-book4-page .ham-freq-label,
body.fn-book4-page .ham-dial-label,
body.fn-book4-page .ham-np-label,
body.fn-book4-page .ham-led-lbl{
  color:rgba(255,179,71,.72);
}

body.fn-book4-page .ham-vu-seg{
  background:rgba(53,255,231,.16);
  border:1px solid rgba(53,255,231,.14);
  box-shadow: inset 0 0 5px rgba(0,245,212,.12);
}

body.fn-book4-page .ham-vu-seg.vu-on{
  background:#ff2f7d;
  box-shadow:0 0 8px rgba(255,47,125,.8);
}

body.fn-book4-page #hamDialCanvas{
  border-radius:50%;
  background:
    radial-gradient(circle, rgba(53,255,231,.18), transparent 58%),
    conic-gradient(from 22deg, rgba(255,47,125,.38), rgba(53,255,231,.28), rgba(255,179,71,.24), rgba(255,47,125,.38));
  box-shadow:0 0 18px rgba(0,245,212,.28);
}

body.fn-book4-page .ham-btn{
  border-color: rgba(0,245,212,.34);
  background:linear-gradient(135deg, rgba(0,245,212,.13), rgba(255,47,125,.10));
  color:#dffcff;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

body.fn-book4-page .ham-btn.hb-active,
body.fn-book4-page .ham-btn:hover{
  border-color:#ffb347;
  color:#ffb347;
  box-shadow:0 0 12px rgba(255,179,71,.22);
}

body.fn-book4-page #ham-station-popup{
  border-color:rgba(0,245,212,.42);
  background:
    linear-gradient(145deg, rgba(255,47,125,.12), transparent 28%),
    rgba(3,7,16,.98);
  box-shadow:0 0 34px rgba(0,245,212,.18);
}

/* FN BOOK4 READER LINK VISIBILITY FIX V1 */
body.fn-book4-page .fn-reader-launch-link,
body.fn-book4-page .fn-reader-backline a{
  color:#35ffe7;
  font-weight:800;
  text-shadow:0 0 12px rgba(53,255,231,.65);
  border-bottom:1px solid rgba(53,255,231,.65);
}

body.fn-book4-page .fn-reader-launch-link:hover,
body.fn-book4-page .fn-reader-backline a:hover{
  color:#ffb347;
  text-shadow:0 0 14px rgba(255,179,71,.65);
  border-bottom-color:#ffb347;
}

/* FN BOOK4 READER LINK VISIBILITY FIX V2: override visited purple */
body.fn-book4-page a.fn-reader-launch-link,
body.fn-book4-page a.fn-reader-launch-link:link,
body.fn-book4-page a.fn-reader-launch-link:visited,
body.fn-book4-page .fn-reader-backline a,
body.fn-book4-page .fn-reader-backline a:link,
body.fn-book4-page .fn-reader-backline a:visited{
  color:#35ffe7 !important;
  font-weight:800;
  text-decoration:none;
  text-shadow:0 0 12px rgba(53,255,231,.75);
  border-bottom:1px solid rgba(53,255,231,.75);
}

body.fn-book4-page a.fn-reader-launch-link:hover,
body.fn-book4-page a.fn-reader-launch-link:focus,
body.fn-book4-page .fn-reader-backline a:hover,
body.fn-book4-page .fn-reader-backline a:focus{
  color:#ffb347 !important;
  text-shadow:0 0 14px rgba(255,179,71,.75);
  border-bottom-color:#ffb347;
}

/* FN BOOK4 BETA PORTAL BRAND LINK VISIBILITY FIX V1 */
body.fn-book4-page .fn-beta-series-portal > a,
body.fn-book4-page .fn-beta-series-head a,
body.fn-book4-page .fn-beta-series-brand a,
body.fn-book4-page .fn-beta-series-title a,
body.fn-book4-page .fn-beta-series-portal a[href="../index.html"],
body.fn-book4-page .fn-beta-series-portal a[href="/"],
body.fn-book4-page .fn-beta-series-portal a[href="../index.html"]:visited,
body.fn-book4-page .fn-beta-series-portal a[href="/"]:visited{
  color:#35ffe7 !important;
  text-decoration:none !important;
  font-weight:800;
  text-shadow:0 0 12px rgba(53,255,231,.75);
}

/* FN BOOK4 GLOBAL LINK COLOR FIX V1 */
body.fn-book4-page a,
body.fn-book4-page a:link,
body.fn-book4-page a:visited{
  color:#35ffe7 !important;
  text-decoration:none !important;
  text-shadow:0 0 10px rgba(53,255,231,.7);
}

body.fn-book4-page a:hover,
body.fn-book4-page a:focus{
  color:#ffb347 !important;
  text-shadow:0 0 12px rgba(255,179,71,.7);
}

/* FN BOOK4 HAM RIG SKIN V2: ANGLED BIO-DIGITAL CONSOLE */
body.fn-book4-page #fn-ham-bar{
  overflow: visible;
}

body.fn-book4-page #fn-ham-bar::after{
  content:"SIGNAL EMPIRE // BIO-DIGITAL RELAY // 2010s FUTURE AS IMAGINED BY 1987";
  position:absolute;
  right:18px;
  top:-22px;
  padding:.28rem .7rem;
  border:1px solid rgba(255,47,125,.55);
  background:rgba(5,8,18,.96);
  color:#ffb347;
  font-family:"Share Tech Mono", monospace;
  font-size:.62rem;
  letter-spacing:.12em;
  text-shadow:0 0 10px rgba(255,179,71,.75);
  clip-path:polygon(10px 0,100% 0,calc(100% - 10px) 100%,0 100%);
}

body.fn-book4-page #ham-inner{
  position:relative;
  border-top:1px solid rgba(255,47,125,.28);
  border-bottom:1px solid rgba(53,255,231,.22);
}

body.fn-book4-page #ham-inner::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    repeating-linear-gradient(0deg, rgba(53,255,231,.055) 0 1px, transparent 1px 5px),
    linear-gradient(110deg, transparent 0 18%, rgba(255,47,125,.12) 18% 19%, transparent 19% 62%, rgba(0,245,212,.11) 62% 63%, transparent 63%);
  opacity:.75;
}

body.fn-book4-page .ham-brand,
body.fn-book4-page .ham-freq-block,
body.fn-book4-page .ham-vu-block,
body.fn-book4-page .ham-dial-block,
body.fn-book4-page .ham-np-block,
body.fn-book4-page .ham-transport,
body.fn-book4-page .ham-leds{
  position:relative;
  padding:.45rem .58rem;
  background:
    linear-gradient(135deg, rgba(53,255,231,.075), rgba(255,47,125,.055)),
    rgba(1,5,14,.55);
  box-shadow:inset 0 0 16px rgba(53,255,231,.075);
  clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);
}

body.fn-book4-page .ham-np-title{
  color:#eaffff;
  text-shadow:0 0 9px rgba(53,255,231,.6);
}

body.fn-book4-page .ham-np-sub{
  color:#ffb347;
}

body.fn-book4-page .ham-led.led-green{
  background:#35ffe7;
  box-shadow:0 0 9px #35ffe7;
}

body.fn-book4-page .ham-led.led-amber{
  background:#ff2f7d;
  box-shadow:0 0 9px #ff2f7d;
}

/* FN BOOK4 HAM RIG SKIN V3: VCR x TRANSLUCENT IMAC VIDEO MODEL */
body.fn-book4-page #fn-ham-bar{
  border-top:2px solid rgba(53,255,231,.75);
  background:
    linear-gradient(90deg, rgba(255,255,255,.10), transparent 12% 88%, rgba(255,255,255,.08)),
    linear-gradient(135deg, rgba(65,255,225,.34), rgba(255,47,125,.18) 46%, rgba(18,24,38,.96));
  box-shadow:
    0 -20px 48px rgba(53,255,231,.22),
    inset 0 0 38px rgba(255,255,255,.10);
}

body.fn-book4-page #ham-tab span:nth-child(2)::after{
  content:" // VIDEO RELAY";
  color:#ffb347;
}

body.fn-book4-page #ham-inner{
  background:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,.22), transparent 22%),
    radial-gradient(circle at 78% 42%, rgba(53,255,231,.18), transparent 26%),
    linear-gradient(180deg, rgba(186,236,232,.28), rgba(5,10,20,.94));
  border-top:1px solid rgba(255,255,255,.24);
}

/* make center feel like a VCR tape bay / video transport */
body.fn-book4-page .ham-vu-block{
  position:relative;
  min-width:150px;
  height:78px;
  padding:0;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.28);
  background:
    linear-gradient(180deg, rgba(196,230,226,.44), rgba(14,22,34,.92));
  border-radius:18px 18px 10px 10px;
  box-shadow:
    inset 0 0 22px rgba(53,255,231,.14),
    inset 0 1px 0 rgba(255,255,255,.35);
}

body.fn-book4-page .ham-vu-block::before{
  content:"VIDEO CASSETTE // SUBNET FEED";
  position:absolute;
  left:14px;
  right:14px;
  top:16px;
  height:26px;
  display:grid;
  place-items:center;
  border-radius:4px;
  background:
    linear-gradient(180deg, rgba(10,12,18,.95), rgba(0,0,0,.88));
  border:1px solid rgba(53,255,231,.36);
  color:#35ffe7;
  font-family:"Share Tech Mono", monospace;
  font-size:7px;
  letter-spacing:.12em;
  text-shadow:0 0 8px rgba(53,255,231,.8);
}

body.fn-book4-page .ham-vu-row{
  position:absolute;
  inset:0;
  display:block;
}

body.fn-book4-page .ham-vu-row::before{
  content:"";
  position:absolute;
  left:28px;
  right:28px;
  bottom:15px;
  height:8px;
  border-radius:999px;
  background:
    repeating-linear-gradient(90deg, #35ffe7 0 8px, #ff2f7d 8px 11px, transparent 11px 18px);
  box-shadow:0 0 12px rgba(53,255,231,.42);
}

body.fn-book4-page .ham-vu-seg{
  display:none;
}

body.fn-book4-page .ham-brand,
body.fn-book4-page .ham-freq-block,
body.fn-book4-page .ham-dial-block,
body.fn-book4-page .ham-np-block,
body.fn-book4-page .ham-transport,
body.fn-book4-page .ham-leds{
  border-radius:16px;
  background:
    linear-gradient(180deg, rgba(207,245,241,.22), rgba(5,10,20,.78));
  border-color:rgba(255,255,255,.22);
}

body.fn-book4-page .ham-brand-model::after{
  content:" // VCR-IMAC HYBRID";
  color:#ffb347;
}

body.fn-book4-page #hamDialCanvas{
  border-radius:42% 58% 48% 52%;
  filter:drop-shadow(0 0 10px rgba(53,255,231,.45));
}

/* FN BOOK4 HAM RIG SKIN V4: FORCE VCR/iMAC CENTER VIDEO DECK */
body.fn-book4-page .ham-vu-block{
  min-width: 190px !important;
  height: 86px !important;
  padding: 0 !important;
  position: relative !important;
  overflow: hidden !important;
  border-radius: 22px 22px 10px 10px !important;
  background:
    linear-gradient(180deg, rgba(190,255,245,.42), rgba(50,80,95,.34) 42%, rgba(8,12,24,.96)) !important;
  border: 1px solid rgba(180,255,245,.58) !important;
  box-shadow:
    inset 0 0 28px rgba(53,255,231,.24),
    inset 0 1px 0 rgba(255,255,255,.42),
    0 0 18px rgba(53,255,231,.22) !important;
}

body.fn-book4-page .ham-vu-row{
  display:block !important;
  position:absolute !important;
  inset:0 !important;
}

body.fn-book4-page .ham-vu-seg{
  display:none !important;
}

body.fn-book4-page .ham-vu-block::before{
  content:"";
  position:absolute;
  left:18px;
  right:18px;
  top:18px;
  height:30px;
  border-radius:5px;
  background:
    linear-gradient(90deg, rgba(0,0,0,.92), rgba(15,22,34,.98), rgba(0,0,0,.92));
  border:1px solid rgba(53,255,231,.64);
  box-shadow:
    inset 0 0 14px rgba(0,0,0,.9),
    0 0 14px rgba(53,255,231,.28);
}

body.fn-book4-page .ham-vu-block::after{
  content:"VCR SUBNET VIDEO RELAY";
  position:absolute;
  left:28px;
  right:28px;
  top:26px;
  text-align:center;
  font-family:"Share Tech Mono", monospace;
  font-size:8px;
  letter-spacing:.14em;
  color:#35ffe7;
  text-shadow:0 0 9px rgba(53,255,231,.9);
}

body.fn-book4-page .ham-vu-row::before{
  content:"";
  position:absolute;
  left:28px;
  right:28px;
  bottom:16px;
  height:10px;
  border-radius:999px;
  background:
    repeating-linear-gradient(90deg, #35ffe7 0 9px, #ff2f7d 9px 13px, transparent 13px 20px);
  box-shadow:0 0 16px rgba(53,255,231,.48);
}