/* Layout: magenta "on air" band with cover + buy panel, then a reading column; the history runs as a tuning-dial scale. */
:root{
  --magenta:#A3006D;      /* the cover */
  --magenta-deep:#7A0052;
  --on-magenta:#FFFFFF;
  --bg:#FBF8FA;           /* paper with a faint magenta bias */
  --fg:#22161D;
  --muted:#6B5763;
  --rule:#E6DCE2;
  --surface:#FFFFFF;
  --accent:#A3006D;       /* links/accents on paper */
  --dial-bg:#2A1B24;
  --dial-fg:#F6E9F0;
  --dial-tick:#8E6F80;
  --needle:#FF5BB8;
  --f-display:"Red Hat Display", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --f-body:"Figtree", "Helvetica Neue", Arial, system-ui, sans-serif;
  --f-mono:"Red Hat Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --measure:64ch;
  --gutter-l:max(16px, env(safe-area-inset-left, 0px));
  --gutter-r:max(16px, env(safe-area-inset-right, 0px));
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#170E13; --fg:#F3E8EE; --muted:#B79FAC; --rule:#3A2A33; --surface:#21151C;
    --accent:#FF79C6; --dial-bg:#0F090C; --dial-fg:#F6E9F0; --dial-tick:#7B5D6D; --needle:#FF5BB8;
    --magenta-deep:#5E0040; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#170E13; --fg:#F3E8EE; --muted:#B79FAC; --rule:#3A2A33; --surface:#21151C;
  --accent:#FF79C6; --dial-bg:#0F090C; --dial-fg:#F6E9F0; --dial-tick:#7B5D6D; --needle:#FF5BB8;
  --magenta-deep:#5E0040; color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--needle);outline-offset:3px;border-radius:4px}
h1,h2,h3{font-family:var(--f-display);line-height:1.1;text-wrap:balance;margin:0}
p{margin:0}
.wrap{max-width:68rem;margin:0 auto;padding-left:var(--gutter-l);padding-right:var(--gutter-r)}
.skip{position:absolute;left:-999px;top:0}
.skip:focus{left:16px;top:16px;background:var(--surface);color:var(--fg);padding:.5rem 1rem;z-index:20}

/* ---------- top bar ---------- */
.bar{background:var(--magenta);color:var(--on-magenta)}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:1rem}
.wordmark{font-family:var(--f-display);font-weight:900;letter-spacing:.04em;text-transform:uppercase;font-size:1rem;color:inherit;text-decoration:none}
.bar nav{display:flex;gap:1.25rem;flex-wrap:wrap}
.bar nav a{color:inherit;text-decoration:none;font-weight:600;font-size:.95rem;opacity:.9}
.bar nav a:hover{opacity:1;text-decoration:underline}

/* ---------- hero ---------- */
.hero{background:var(--magenta);color:var(--on-magenta);position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(2rem,5vw,4.5rem);align-items:center;padding-block:clamp(2rem,5vw,4rem) clamp(2.5rem,6vw,5rem)}
.hero-copy{min-width:0;display:grid;gap:1.25rem}
.onair{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--f-mono);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;border:1.5px solid rgba(255,255,255,.7);border-radius:999px;padding:.3rem .8rem;justify-self:start}
.onair i{width:.55rem;height:.55rem;border-radius:50%;background:#fff;animation:blink 2.4s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
.hero h1{font-weight:900;font-size:clamp(3rem,9vw,6.25rem);letter-spacing:-.01em;text-transform:uppercase;line-height:.95}
.hero .sub{font-family:var(--f-display);font-weight:700;font-size:clamp(1.2rem,2.4vw,1.55rem);line-height:1.3}
.hero .by{font-weight:600;font-size:1.05rem;opacity:.92}
.hero .pitch{max-width:46ch;font-size:1.08rem;opacity:.95}

.buy{display:grid;gap:.75rem;margin-top:.5rem}
.buy-label{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;opacity:.85}
.buy-row{display:flex;flex-wrap:wrap;gap:.6rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--f-display);font-weight:700;font-size:1rem;text-decoration:none;border-radius:999px;padding:.8rem 1.35rem;border:2px solid #fff;color:#fff;transition:background .15s,color .15s}
.btn:hover{background:#fff;color:var(--magenta);text-decoration:none}
.btn.primary{background:#fff;color:var(--magenta)}
.btn.primary:hover{background:transparent;color:#fff}
.btn svg{width:1em;height:1em;flex:none}

.cover{justify-self:center;width:min(100%,22rem);position:relative}
.cover img{width:100%;border-radius:3px 6px 6px 3px;box-shadow:0 1px 0 rgba(255,255,255,.25) inset,-10px 0 0 -4px rgba(0,0,0,.18),0 30px 60px -20px rgba(40,0,25,.65);outline:1.5px solid rgba(255,255,255,.35);outline-offset:-1.5px}
.cover figcaption{margin-top:1rem;text-align:center;font-family:var(--f-mono);font-size:.8rem;letter-spacing:.06em;opacity:.85}

/* radio waves behind the cover */
.waves{position:absolute;right:-12rem;top:50%;width:46rem;height:46rem;transform:translateY(-50%);pointer-events:none;opacity:.14}
.waves span{position:absolute;inset:0;border:2px solid #fff;border-radius:50%}
.waves span:nth-child(2){inset:6rem}
.waves span:nth-child(3){inset:12rem}
.waves span:nth-child(4){inset:18rem}

/* ---------- quote ---------- */
.quote{border-bottom:1px solid var(--rule)}
.quote .wrap{padding-block:clamp(2.5rem,6vw,4.5rem)}
.quote blockquote{margin:0 auto;max-width:52rem;display:grid;gap:1rem}
.quote p{font-family:var(--f-display);font-weight:500;font-size:clamp(1.35rem,3vw,2rem);line-height:1.3;text-wrap:balance}
.quote p::before{content:"\201C";color:var(--accent)}
.quote p::after{content:"\201D";color:var(--accent)}
.quote cite{font-style:normal;color:var(--muted);font-size:1rem}
.quote cite b{color:var(--fg);font-weight:600}

/* ---------- sections ---------- */
section.block{padding-block:clamp(3rem,7vw,5.5rem)}
.eyebrow{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.75rem}
h2{font-weight:900;font-size:clamp(2rem,4.5vw,3rem);letter-spacing:-.01em}
.lede{font-size:1.2rem;color:var(--muted);max-width:var(--measure);margin-top:1rem}
.prose{max-width:var(--measure);display:grid;gap:1.1rem}

.story{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,22rem);gap:clamp(2rem,5vw,4rem);align-items:start;margin-top:2rem}
.letter{background:var(--surface);border:1px solid var(--rule);padding:1.5rem 1.5rem 1.25rem;position:relative;font-size:.98rem;transform:rotate(-1deg)}
.letter::after{content:"";position:absolute;left:0;right:0;top:58%;height:14px;background:var(--bg);clip-path:polygon(0 40%,4% 70%,9% 30%,14% 60%,20% 25%,26% 65%,31% 35%,37% 70%,43% 30%,49% 60%,55% 25%,61% 65%,67% 35%,73% 70%,79% 30%,85% 60%,91% 25%,96% 65%,100% 40%,100% 100%,0 100%);opacity:0}
.letter .from{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.06em;color:var(--muted);text-transform:uppercase;margin-bottom:.75rem}
.letter p{font-style:italic}
.letter .tear{display:block;height:0;border-top:2px dashed var(--rule);margin:1rem -1.5rem}
.letter .note{font-style:normal;font-size:.85rem;color:var(--muted);margin-top:.25rem}

.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:2.5rem}
.fact{background:var(--bg);padding:1.25rem 1.1rem;display:grid;gap:.25rem;align-content:start}
.fact b{font-family:var(--f-display);font-weight:900;font-size:2.4rem;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}
.fact span{color:var(--muted);font-size:.95rem;line-height:1.35}

/* ---------- tuning dial (history) ---------- */
.dial-band{background:var(--dial-bg);color:var(--dial-fg)}
.dial-band .eyebrow{color:var(--needle)}
.dial-band .lede{color:#CDB6C3}
.dial-scroll{overflow-x:auto;margin-top:2.25rem;padding-bottom:.75rem;scrollbar-color:var(--dial-tick) transparent}
.dial{position:relative;min-width:64rem;height:21rem;border-top:1px solid var(--dial-tick);border-bottom:1px solid var(--dial-tick);
  background:
    repeating-linear-gradient(90deg,var(--dial-tick) 0 1px,transparent 1px calc(100%/75)),
    repeating-linear-gradient(90deg,var(--dial-fg) 0 1px,transparent 1px calc(100%/7.5));
  background-size:100% 10px,100% 20px;background-repeat:no-repeat;background-position:0 50%,0 50%}
.dial::before{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:var(--dial-tick)}
.stn{position:absolute;left:var(--x);width:0;top:0;bottom:0}
.stn::before{content:"";position:absolute;left:-1px;top:calc(50% - 14px);width:3px;height:28px;background:var(--needle);border-radius:2px}
.stn .lbl{position:absolute;left:-1px;white-space:nowrap;display:grid;gap:.1rem;padding-left:.45rem;border-left:1px solid var(--dial-tick)}
.stn.up .lbl{bottom:calc(50% + 16px + var(--lvl,0)*46px);padding-bottom:0;height:auto}
.stn.dn .lbl{top:calc(50% + 16px + var(--lvl,0)*46px)}
.stn::after{content:"";position:absolute;left:0;width:1px;background:var(--dial-tick);height:calc(var(--lvl,0)*46px + 2px)}
.stn.up::after{bottom:calc(50% + 14px)}
.stn.dn::after{top:calc(50% + 14px)}
.stn .yr{font-family:var(--f-mono);font-size:.78rem;color:var(--needle);font-variant-numeric:tabular-nums}
.stn .nm{font-family:var(--f-display);font-weight:700;font-size:.98rem}
.dial-years{position:relative;min-width:64rem;height:1.6rem;font-family:var(--f-mono);font-size:.75rem;color:#B79FAC}
.dial-years span{position:absolute;left:var(--x);transform:translateX(-50%);top:.4rem}
.dial-years span:first-child{transform:none}
.dial-hint{font-size:.85rem;color:#B79FAC;margin-top:.5rem}
@media (min-width:68rem){.dial-hint{display:none}}

/* ---------- contents ---------- */
.toc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 3rem;margin-top:2.25rem;list-style:none;padding:0}
.toc>li{border-top:1px solid var(--rule);padding:1rem 0;min-width:0;break-inside:avoid}
.toc .ch{display:flex;justify-content:space-between;gap:1rem;align-items:baseline}
.toc .ch strong{font-family:var(--f-display);font-weight:700;font-size:1.15rem}
.toc .pg{font-family:var(--f-mono);font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}
.toc .det{color:var(--muted);font-size:.95rem;margin-top:.3rem;line-height:1.5}
.toc-cols{columns:2;column-gap:3rem;margin-top:2.25rem}
.toc-cols .toc{display:block;margin:0}

/* ---------- authors ---------- */
.authors{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(1.5rem,4vw,3rem);margin-top:2.25rem}
.author{display:grid;gap:.9rem;align-content:start;min-width:0;padding-top:1.25rem;border-top:4px solid var(--accent)}
.author h3{font-weight:900;font-size:1.75rem}
.author .role{font-family:var(--f-mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.author p{max-width:var(--measure)}
.credit{margin-top:2.5rem;padding:1.25rem 1.5rem;background:var(--surface);border:1px solid var(--rule);max-width:var(--measure);display:grid;gap:.35rem}
.credit b{font-family:var(--f-display)}

/* ---------- buy band ---------- */
.buy-band{background:var(--magenta);color:#fff}
.buy-band .wrap{padding-block:clamp(3rem,7vw,5rem);display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2rem;align-items:center}
.buy-band h2{color:#fff}
.buy-band p{margin-top:.75rem;opacity:.92;max-width:44ch}
.buy-band .buy-row{justify-content:flex-end}

footer{padding-block:2.5rem;color:var(--muted);font-size:.92rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem 2rem}
footer a{color:var(--fg)}

/* ---------- responsive ---------- */
@media (max-width:60rem){
  .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .story{grid-template-columns:minmax(0,1fr)}
  .letter{max-width:30rem}
}
@media (max-width:48rem){
  .hero .wrap{grid-template-columns:minmax(0,1fr)}
  .cover{order:-1;width:min(70%,16rem)}
  .waves{right:-20rem;top:22%}
  .toc-cols{columns:1}
  .authors{grid-template-columns:minmax(0,1fr)}
  .buy-band .wrap{grid-template-columns:minmax(0,1fr)}
  .buy-band .buy-row{justify-content:flex-start}
  .bar nav{gap:.9rem}
}

/* ---------- sample links ---------- */
.sample-link{color:#fff;font-weight:600;justify-self:start}
.toc .ch strong a{color:inherit;text-decoration:none}
.toc .ch strong a:hover{color:var(--accent);text-decoration:underline}
a.free{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.sample-promo{padding-block:0 clamp(2rem,5vw,3.5rem)}
.sample-promo .wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1.5rem 3rem;align-items:end;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding-block:clamp(2rem,5vw,3rem)}
.btn-solid{display:inline-flex;font-family:var(--f-display);font-weight:700;text-decoration:none;border-radius:999px;padding:.85rem 1.5rem;background:var(--magenta);color:#fff;border:2px solid var(--magenta);white-space:nowrap}
.btn-solid:hover{background:transparent;color:var(--accent);border-color:var(--accent)}
@media (max-width:48rem){.sample-promo .wrap{grid-template-columns:minmax(0,1fr)}.btn-solid{justify-self:start}}

/* ---------- sample reading page ---------- */
.read-head{background:var(--magenta);color:#fff}
.read-head .wrap{padding-block:clamp(2rem,5vw,3.5rem);display:grid;gap:.9rem}
.read-head .eyebrow{color:#fff;opacity:.85;margin:0}
.read-head h1{font-weight:900;font-size:clamp(2.2rem,6vw,3.75rem);letter-spacing:-.01em}
.read-head p{max-width:52ch;font-size:1.1rem;opacity:.95}
.read{display:grid;grid-template-columns:14rem minmax(0,1fr);gap:clamp(2rem,5vw,4rem);padding-block:clamp(2.5rem,6vw,4rem)}
.read-nav{position:sticky;top:1.5rem;align-self:start;font-size:.92rem;min-width:0}
.read-nav ol{list-style:none;margin:0;padding:0;display:grid;gap:.15rem}
.read-nav ol ol{padding-left:.9rem;margin:.25rem 0 .5rem;border-left:1px solid var(--rule)}
.read-nav a{color:var(--muted);text-decoration:none;display:block;padding:.2rem 0}
.read-nav a:hover{color:var(--accent)}
.read-nav>ol>li>a{color:var(--fg);font-weight:600}
.read-nav .nav-label{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:.6rem}
article.chapter{max-width:var(--measure);min-width:0;display:grid;gap:1.15rem;scroll-margin-top:1rem}
article.chapter+article.chapter{margin-top:3.5rem;padding-top:3rem;border-top:4px solid var(--accent)}
.chapter h2{font-size:clamp(1.9rem,4vw,2.6rem);scroll-margin-top:1rem}
.chapter h3{font-weight:900;font-size:1.4rem;margin-top:1.25rem;scroll-margin-top:1rem}
.chapter .pages{font-family:var(--f-mono);font-size:.8rem;color:var(--muted);margin-top:-.5rem}
.epigraph{margin:0;font-style:italic;color:var(--muted);border-left:3px solid var(--accent);padding-left:1rem}
.epigraph cite{font-style:normal;display:block;margin-top:.3rem;font-size:.92rem}
.chapter blockquote{margin:0;padding-left:1.25rem;border-left:1px solid var(--rule);color:var(--fg);display:grid;gap:.8rem}
.chapter ul{margin:0;padding-left:1.2rem;display:grid;gap:.4rem}
.chapter sup a{text-decoration:none;font-weight:600}
.footnotes{font-size:.88rem;color:var(--muted);border-top:1px solid var(--rule);padding-top:.75rem}
.chapter figure{margin:.75rem 0;display:grid;gap:.6rem}
.chapter figure img{border:1px solid var(--rule);background:#fff}
.chapter figcaption{font-size:.88rem;color:var(--muted)}
.script{display:grid;grid-template-columns:auto minmax(0,1fr);gap:.4rem 1.25rem;background:var(--surface);border:1px solid var(--rule);padding:1.25rem 1.4rem;font-size:.98rem;overflow-x:auto}
.script dt{font-family:var(--f-mono);font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);padding-top:.15rem}
.script dd{margin:0}
.script .fx{grid-column:1/-1;font-family:var(--f-mono);font-size:.82rem;color:var(--muted)}
.read-end{margin-top:3.5rem;padding:1.5rem;background:var(--surface);border:1px solid var(--rule);display:grid;gap:.75rem;max-width:var(--measure)}
.read-end h2{font-size:1.5rem}
.read-end .buy-row .btn{border-color:var(--magenta);color:var(--accent)}
.read-end .buy-row .btn:hover{background:var(--magenta);color:#fff}
.read-end .buy-row .btn.primary{background:var(--magenta);color:#fff}
.read-end .buy-row .btn.primary:hover{background:transparent;color:var(--accent)}
@media (max-width:52rem){.read{grid-template-columns:minmax(0,1fr)}.read-nav{position:static;border-bottom:1px solid var(--rule);padding-bottom:1rem}}