/* Layout: a fixed field of living matter behind a scrolling manuscript;
   each chapter is a folio pinned beside the form it describes. */
:root {
  color-scheme: dark;
  --ground: #0d0b09;   /* set live by main.js: firelight at the start, starlight at the end */
  --accent: #d9b27c;   /* set live by main.js */
  --bone: #ece3d3;
  --text: #d3c9b9;
  --ash: #a99f90;
  --hair: rgba(236, 227, 211, 0.16);

  --f-display: "GFS Didot", "Noto Serif Display", Didot, "Bodoni 72", Georgia, serif;
  --f-body: "Commissioner", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --t-label: 0.72rem;
  --t-small: 0.875rem;
  --t-body: 1.04rem;
  --t-lede: clamp(1.5rem, 2.2vw, 1.95rem);
  --t-title: clamp(2.4rem, 5vw, 4.2rem);
  --t-greek: clamp(3.4rem, 7vw, 6.4rem);
  --t-hero: clamp(5.2rem, 22vw, 21rem);

  --gutter: clamp(16px, 4.5vw, 64px);
  --bar-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--ground);
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--bone);
  font: 400 var(--t-body)/1.65 var(--f-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { overflow-x: clip; }

::selection { background: var(--accent); color: #0d0b09; }

a { color: inherit; }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }
[lang="grc"], [lang="el"], .gr { font-family: var(--f-display); }
.lede, .aside, .interlude-text, .hero-sub, .prologue-text, .gloss p, .section-head h2, .finale-sub, .ledger dd, .i-title { word-spacing: -0.08em; }
cite { font-style: italic; }
p { margin: 0; }

.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: fixed; left: 16px; top: 12px; z-index: 50;
  padding: 10px 14px; background: var(--bone); color: #0d0b09;
  font: 500 var(--t-small)/1 var(--f-mono); text-decoration: none;
  transform: translateY(-200%);
}
.skip:focus { transform: none; }

/* ------------------------------------------------------------------ matter */

.matter {
  position: fixed; inset: 0; z-index: 0;
  width: 100vw; height: 100vh; height: 100lvh;
  display: block; pointer-events: none;
}
.veil {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(130% 95% at 50% 45%, transparent 52%, rgba(0, 0, 0, 0.6) 100%);
}
.veil::after {
  content: ""; position: absolute; inset: -100px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.06;
}
@media (prefers-reduced-motion: no-preference) {
  .veil::after { animation: grain 1.2s steps(5) infinite; }
}
@keyframes grain {
  0% { transform: translate(0, 0); }
  20% { transform: translate(-37px, 22px); }
  40% { transform: translate(24px, -41px); }
  60% { transform: translate(-18px, -12px); }
  80% { transform: translate(41px, 30px); }
  100% { transform: translate(0, 0); }
}
.no-webgl .matter { display: none; }
.no-webgl body {
  background:
    radial-gradient(60% 50% at 70% 40%, rgba(217, 178, 124, 0.12), transparent 70%),
    radial-gradient(50% 40% at 25% 70%, rgba(143, 208, 232, 0.08), transparent 70%),
    var(--ground);
  background-attachment: fixed;
}

main, .colophon { position: relative; z-index: 2; }

/* ------------------------------------------------------------------ loader */

.loader {
  position: fixed; inset: 0; z-index: 60;
  display: none; place-content: center; justify-items: center; gap: 14px;
  background: #0d0b09;
  transition: opacity 0.9s ease, visibility 0.9s;
}
.js .loader { display: grid; }
.ready .loader { opacity: 0; visibility: hidden; }
.loader-word { font: 400 clamp(3rem, 9vw, 6rem)/1 var(--f-display); color: var(--bone); }
.loader-count {
  font: 400 var(--t-label)/1 var(--f-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--ash);
  font-variant-numeric: tabular-nums;
}
@media (prefers-reduced-motion: no-preference) {
  .loader-word { animation: breathe 2.4s ease-in-out infinite; }
}
@keyframes breathe { 50% { opacity: 0.45; filter: blur(2px); } }

/* ------------------------------------------------------------------ bar */

.bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px;
  padding: calc(env(safe-area-inset-top, 0px) + 18px) var(--gutter) 18px;
  background: linear-gradient(to bottom, color-mix(in srgb, var(--ground) 85%, transparent), transparent);
}
.brand {
  justify-self: start;
  font: 400 1.5rem/1 var(--f-display); letter-spacing: 0.1em; text-decoration: none; color: var(--bone);
}
.brand small, .finale-title small, .brand-foot small {
  font: 500 0.36em/1 var(--f-mono); letter-spacing: 0.12em; color: var(--accent); margin-left: 0.2em;
}
.now {
  display: grid; justify-items: center; gap: 7px; text-align: center;
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.18em; text-transform: uppercase; white-space: nowrap;
}
.now-label { color: var(--ash); }
.epoch { color: var(--bone); letter-spacing: 0.08em; font-variant-numeric: tabular-nums; transition: opacity 0.6s; }
.epoch-era { color: var(--accent); }
.epoch.is-off { opacity: 0; }
.bar-actions { justify-self: end; display: flex; align-items: center; gap: 8px; }
.btn-index, .btn-mail {
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--bone); background: none; border: 1px solid transparent; border-radius: 999px;
  padding: 11px 16px; cursor: pointer; text-decoration: none;
  transition: border-color 0.3s, background-color 0.3s, color 0.3s;
}
.btn-index:hover { border-color: var(--hair); }
.btn-mail {
  border-color: color-mix(in srgb, var(--accent) 60%, transparent);
  text-transform: none; letter-spacing: 0.06em; font-size: 0.78rem;
}
.btn-mail:hover { background: var(--accent); color: #0d0b09; }

/* ------------------------------------------------------------------ rail + epoch */

.rail {
  position: fixed; right: var(--gutter); top: 50%; z-index: 20;
  transform: translateY(-50%);
}
.rail ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.rail a {
  display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  padding: 5px 0; text-decoration: none;
  font: 500 0.66rem/1 var(--f-mono); letter-spacing: 0.12em; color: var(--ash);
  transition: color 0.3s;
}
.rail a::after {
  content: ""; width: 14px; height: 1px; background: currentColor;
  transition: width 0.4s, background-color 0.4s;
}
.rail-name {
  font-family: var(--f-display); font-size: 0.95rem; letter-spacing: 0;
  opacity: 0; transform: translateX(8px); transition: opacity 0.3s, transform 0.3s;
  white-space: nowrap;
}
.rail a:hover, .rail a:focus-visible, .rail a[aria-current="step"] { color: var(--bone); }
.rail a:hover .rail-name, .rail a:focus-visible .rail-name { opacity: 1; transform: none; }
.rail a[aria-current="step"]::after { width: 32px; background: var(--accent); }
.rail.is-off { opacity: 0; pointer-events: none; }
.rail { transition: opacity 0.5s; }

/* ------------------------------------------------------------------ halo (desktop pointer) */

.halo {
  position: fixed; left: 0; top: 0; z-index: 35; pointer-events: none;
  width: 130px; height: 130px; margin: -65px 0 0 -65px; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
  opacity: 0; transition: opacity 0.4s, width 0.5s, height 0.5s, margin 0.5s, border-color 0.4s;
}
.halo.is-on { opacity: 1; }
.halo.is-holding { width: 40px; height: 40px; margin: -20px 0 0 -20px; border-color: var(--accent); }
@media (pointer: coarse) { .halo { display: none; } }

/* ------------------------------------------------------------------ index overlay */

.index {
  position: fixed; inset: 0; z-index: 28; overflow-y: auto;
  display: grid; align-content: center; gap: 28px;
  padding: calc(env(safe-area-inset-top, 0px) + var(--bar-h) + 24px) var(--gutter) 48px;
  background: linear-gradient(to right, color-mix(in srgb, var(--ground) 88%, transparent) 0%, color-mix(in srgb, var(--ground) 55%, transparent) 55%, transparent 100%);
  opacity: 0; visibility: hidden; transition: opacity 0.45s ease, visibility 0.45s;
}
.index.is-open { opacity: 1; visibility: visible; }
html.index-open main, html.index-open .colophon, html.index-open .rail { visibility: hidden; }
.index-kicker, .kicker {
  font: 500 var(--t-label)/1.4 var(--f-mono); letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent);
}
.kicker [lang], .index-kicker [lang] { font-family: var(--f-display); font-size: 1.25em; letter-spacing: 0; text-transform: none; }
.index-list { list-style: none; margin: 0; padding: 0; width: min(46rem, 100%); }
.index-list a {
  display: grid; grid-template-columns: 3.2rem minmax(0, 1fr) auto; align-items: baseline; gap: 16px;
  padding: 12px 0; border-bottom: 1px solid var(--hair); text-decoration: none;
}
.i-num { font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.12em; color: var(--accent); }
.i-title {
  font: 400 clamp(1.5rem, 3.2vw, 2.5rem)/1.1 var(--f-display); color: var(--bone);
  transition: transform 0.35s ease, color 0.35s;
}
.i-title .gr { font-size: 0.62em; color: var(--ash); margin-left: 0.35em; }
.i-when { font: 400 var(--t-label)/1 var(--f-mono); letter-spacing: 0.1em; color: var(--ash); text-align: right; }
.index-list a:hover .i-title, .index-list a:focus-visible .i-title { transform: translateX(10px); color: var(--accent); }
.index-more { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 28px; }
.index-more a {
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ash);
  text-decoration: none; border-bottom: 1px solid var(--hair); padding-bottom: 4px;
}
.index-more a:hover { color: var(--bone); border-color: var(--accent); }

/* ------------------------------------------------------------------ hero */

.hero {
  min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column;
  padding-block: calc(env(safe-area-inset-top, 0px) + var(--bar-h) + 24px) 32px;
  padding-inline: var(--gutter);
}
.hero-center { margin-block: auto; display: grid; justify-items: center; text-align: center; gap: 10px; }
.hero-entry {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px;
  font: 400 var(--t-label)/1.4 var(--f-mono); letter-spacing: 0.16em; color: var(--ash);
}
.hero-entry .gr { font-size: 1.3rem; letter-spacing: 0; color: var(--accent); line-height: 1; }
.hero-title {
  margin: 0; font: 400 var(--t-hero)/0.8 var(--f-display); letter-spacing: 0.04em;
  color: var(--bone); display: flex; justify-content: center;
  text-shadow: 0 0 60px color-mix(in srgb, var(--ground) 70%, transparent);
}
.hero-title span { display: inline-block; }
.hero-sub { font: 400 var(--t-lede)/1.2 var(--f-display); color: var(--bone); }
@media (prefers-reduced-motion: no-preference) {
  .js .hero-title span, .js .hero-sub, .js .hero-entry { opacity: 0; }
  .ready .hero-title span { animation: take-form 1.8s cubic-bezier(0.2, 0.7, 0.1, 1) both; }
  .ready .hero-title span:nth-child(2) { animation-delay: 0.12s; }
  .ready .hero-title span:nth-child(3) { animation-delay: 0.24s; }
  .ready .hero-title span:nth-child(4) { animation-delay: 0.36s; }
  .ready .hero-sub, .ready .hero-entry { animation: rise 1.4s 0.9s ease both; }
}
@keyframes take-form {
  from { opacity: 0; filter: blur(22px); transform: translateY(0.06em) scale(1.06); letter-spacing: 0.2em; }
  to { opacity: 1; filter: blur(0); transform: none; }
}
@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.hero-foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 24px 48px;
}
.definition {
  margin: 0; padding: 0 0 0 1.4em; max-width: 25rem;
  font-size: var(--t-small); line-height: 1.55; color: var(--text);
  display: grid; gap: 4px;
}
.definition li::marker { font: 500 0.7rem var(--f-mono); color: var(--accent); }
.definition em { font-family: var(--f-display); font-style: normal; color: var(--bone); font-size: 1.08em; }
.cue { display: grid; justify-items: end; gap: 10px; text-align: right; }
.cue-hint { font-size: var(--t-small); color: var(--ash); max-width: 20rem; }
.cue-link {
  display: flex; align-items: center; gap: 14px; text-decoration: none;
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.18em; text-transform: uppercase; color: var(--bone);
}
.cue-line { position: relative; width: 56px; height: 1px; background: var(--hair); overflow: hidden; }
.cue-line::after {
  content: ""; position: absolute; inset: 0; background: var(--accent);
  transform: translateX(-100%);
}
@media (prefers-reduced-motion: no-preference) {
  .cue-line::after { animation: travel 2.4s ease-in-out infinite; }
}
@keyframes travel { 60%, 100% { transform: translateX(100%); } }
.only-coarse { display: none; }
@media (pointer: coarse) {
  .only-fine { display: none; }
  .only-coarse { display: inline; }
}

/* ------------------------------------------------------------------ ticker */

.ticker {
  border-block: 1px solid var(--hair); overflow: hidden; white-space: nowrap;
  padding-block: 16px; background: color-mix(in srgb, var(--ground) 55%, transparent);
}
.ticker-track { display: inline-flex; gap: 56px; will-change: transform; }
.ticker span { font: 400 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ash); }
.ticker b { font: 400 1.35rem/1 var(--f-display); letter-spacing: 0; text-transform: none; color: var(--bone); margin-right: 12px; }

/* ------------------------------------------------------------------ prologue */

.prologue {
  min-height: 120vh; display: grid; align-content: center; justify-items: center; gap: 32px;
  padding-block: 20vh; padding-inline: var(--gutter); text-align: center;
}
.prologue-text {
  max-width: 50rem; font: 400 clamp(1.7rem, 3.4vw, 2.9rem)/1.28 var(--f-display); color: var(--bone);
  text-wrap: balance; text-shadow: 0 0 28px var(--ground);
}
.prologue-text .w { transition: opacity 0.5s ease, color 0.5s ease; }
.prologue-text .w.dim { opacity: 0.38; }

/* ------------------------------------------------------------------ chapters */

.chapter {
  position: relative; display: flex; min-height: 190vh;
  padding-inline: var(--gutter);
}
.chapter[data-side="left"] { justify-content: flex-start; }
.chapter[data-side="right"] { justify-content: flex-end; padding-right: calc(var(--gutter) + 72px); }
.folio {
  position: sticky; top: clamp(84px, 14vh, 140px); align-self: flex-start;
  width: min(33rem, 44vw); margin-block: 30vh 36vh;
  display: grid; gap: 18px;
  text-shadow: 0 0 22px var(--ground), 0 0 6px var(--ground);
}
.folio > p:not([class]) { color: var(--text); max-width: 62ch; }
.folio-meta {
  display: flex; align-items: center; gap: 14px;
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.18em; text-transform: uppercase; color: var(--ash);
}
.folio-meta .num { color: var(--accent); }
.folio-meta .rule { flex: 0 0 48px; height: 1px; background: var(--hair); }
.folio h2 { margin: 0; display: grid; gap: 14px; font-weight: 400; }
.folio h2 .gr { font-size: var(--t-greek); line-height: 1.12; color: var(--accent); transition: color 0.8s; }
.folio h2 .en {
  font: 500 0.8rem/1 var(--f-mono); letter-spacing: 0.28em; text-transform: uppercase; color: var(--bone);
}
.lede { font: 400 var(--t-lede)/1.2 var(--f-display); color: var(--bone); text-wrap: balance; }
.aside { font: 400 1.2rem/1.4 var(--f-display); color: var(--bone); border-left: 1px solid var(--accent); padding-left: 16px; }

.gloss { margin: 4px 0; padding: 14px 0 14px 18px; border-left: 1px solid var(--accent); display: grid; gap: 6px; }
.gloss p { font-size: 1.35rem; line-height: 1.3; color: var(--bone); }
.gloss footer { font-size: var(--t-small); color: var(--ash); }

.ledger {
  margin: 6px 0 0; padding-top: 16px; border-top: 1px solid var(--hair);
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 44px;
}
.ledger div { display: grid; gap: 6px; position: relative; min-width: 0; }
.ledger div + div::before {
  content: "→"; position: absolute; left: -32px; bottom: 2px;
  font: 400 1rem/1 var(--f-mono); color: var(--accent);
}
.ledger dt {
  display: flex; align-items: baseline; gap: 8px;
  font: 500 0.66rem/1.2 var(--f-mono); letter-spacing: 0.18em; text-transform: uppercase; color: var(--ash);
}
.ledger dt span { font-size: 1rem; letter-spacing: 0; text-transform: none; color: var(--accent); }
.ledger dd { margin: 0; font: 400 1.4rem/1.15 var(--f-display); color: var(--bone); }
.where {
  font: 400 0.68rem/1.5 var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ash);
}
.where::before { content: "◦ "; color: var(--accent); }

/* ------------------------------------------------------------------ interlude */

.interlude { display: grid; justify-items: center; gap: 22px; padding: 12vh var(--gutter); text-align: center; }
.interlude-text {
  max-width: 30rem; font: 400 var(--t-lede)/1.25 var(--f-display); color: var(--bone); text-wrap: balance;
  text-shadow: 0 0 24px var(--ground), 0 0 6px var(--ground);
}

/* ------------------------------------------------------------------ section heads */

.section-head { max-width: 42rem; margin: 0 auto; display: grid; justify-items: center; gap: 16px; text-align: center; }
.section-head h2 { margin: 0; font: 400 var(--t-title)/1.02 var(--f-display); text-wrap: balance; }
.section-head p:not(.kicker) { color: var(--text); max-width: 36rem; text-shadow: 0 0 18px var(--ground); }

/* ------------------------------------------------------------------ lexicon */

.lexicon { padding: 24vh var(--gutter) 28vh; display: grid; gap: 72px; }
.terms {
  list-style: none; margin: 0 auto; padding: 0; width: min(72rem, 100%);
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 56px 44px;
}
.term { border-top: 1px solid var(--hair); padding-top: 22px; display: grid; gap: 10px; align-content: start; transition: border-color 0.4s; }
.term:hover { border-color: var(--accent); }
.term-word { font: 400 clamp(2.5rem, 4.2vw, 3.5rem)/1 var(--f-display); color: var(--bone); transition: color 0.4s; }
.term:hover .term-word { color: var(--accent); }
.term-say { font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.term-def { color: var(--text); max-width: 34ch; }

/* ------------------------------------------------------------------ shaper */

.shaper {
  min-height: 120vh; display: flex; flex-direction: column; justify-content: space-between; gap: 40vh;
  padding: 18vh var(--gutter) 14vh;
}
.shaper-controls { display: grid; justify-items: center; gap: 18px; }
.shaper-form {
  display: flex; align-items: center; gap: 12px; width: min(32rem, 100%);
  border-bottom: 1px solid color-mix(in srgb, var(--bone) 45%, transparent); transition: border-color 0.3s;
}
.shaper-form:focus-within { border-color: var(--accent); }
.shaper-form input {
  flex: 1; min-width: 0; background: none; border: 0; outline: none; padding: 10px 0;
  font: 400 clamp(1.6rem, 3vw, 2.2rem)/1.2 var(--f-display); color: var(--bone);
}
.shaper-form input::placeholder { color: color-mix(in srgb, var(--ash) 70%, transparent); }
.shaper-form button {
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; cursor: pointer;
}
.shaper-form button {
  background: none; border: 1px solid var(--accent); color: var(--bone); border-radius: 999px; padding: 11px 16px; flex: none;
  transition: background-color 0.3s, color 0.3s;
}
.shaper-form button:hover { background: var(--accent); color: #0d0b09; }
.shaper-try { display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: 6px 18px; }
.shaper-try span { font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ash); }
.shaper-try button {
  background: none; border: 0; padding: 4px 2px; cursor: pointer; color: var(--text);
  font: 400 1.3rem/1 var(--f-display); border-bottom: 1px solid transparent; transition: color 0.3s, border-color 0.3s;
}
.shaper-try button:hover, .shaper-try button:focus-visible { color: var(--bone); border-color: var(--accent); }
.shaper-now { font: 400 var(--t-label)/1 var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ash); }
.shaper-now span { font: 400 1rem/1 var(--f-display); letter-spacing: 0; text-transform: none; color: var(--accent); margin-left: 6px; }

/* ------------------------------------------------------------------ finale */

.finale {
  min-height: 110vh; display: grid; align-content: center; justify-items: center; gap: 20px;
  padding: 18vh var(--gutter); text-align: center;
}
.finale-title { margin: 0; font: 400 clamp(3.6rem, 11vw, 9.5rem)/0.9 var(--f-display); letter-spacing: 0.05em; }
.finale-sub { font: 400 var(--t-lede)/1.2 var(--f-display); }
.finale-body { max-width: 28rem; color: var(--text); text-shadow: 0 0 16px var(--ground); }

/* the address, in the interlude and the finale */
.mail-line { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px 18px; }
.mail-link {
  font: 400 clamp(1.5rem, 3vw, 2.2rem)/1.2 var(--f-display); color: var(--bone); text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 70%, transparent); padding-bottom: 3px;
  text-shadow: 0 0 18px var(--ground), 0 0 4px var(--ground);
  transition: color 0.3s, border-color 0.3s;
}
.mail-link:hover { color: var(--accent); border-color: var(--accent); }
.mail-line-lg { margin-top: 10px; }
.mail-line-lg .mail-link { font-size: clamp(1.9rem, 4.6vw, 3.2rem); }
.copy-mail {
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; cursor: pointer;
  color: var(--bone); background: color-mix(in srgb, var(--ground) 60%, transparent);
  border: 1px solid var(--hair); border-radius: 999px; padding: 9px 14px;
  transition: border-color 0.3s, color 0.3s;
}
.copy-mail:hover { border-color: var(--accent); }
.copy-mail.is-done { color: var(--accent); border-color: var(--accent); }
.finale-note { max-width: 30rem; font-size: var(--t-small); color: var(--ash); }

/* ------------------------------------------------------------------ colophon */

.colophon {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 32px 64px;
  padding: 72px var(--gutter) calc(env(safe-area-inset-bottom, 0px) + 56px);
  border-top: 1px solid var(--hair); font-size: var(--t-small); color: var(--ash);
  background: color-mix(in srgb, var(--ground) 90%, transparent);
}
.colophon-mark, .colophon-body { display: grid; gap: 14px; align-content: start; }
.brand-foot { font: 400 1.8rem/1 var(--f-display); letter-spacing: 0.1em; color: var(--bone); }
.colophon-body > p { max-width: 60ch; }
.notes summary {
  cursor: pointer; width: fit-content;
  font: 500 var(--t-label)/1 var(--f-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--bone);
}
.notes ol { margin: 18px 0 0; padding-left: 1.4em; display: grid; gap: 8px; max-width: 70ch; }
.notes li::marker { font: 400 0.7rem var(--f-mono); color: var(--accent); }

/* ------------------------------------------------------------------ narrow screens */

@media (max-width: 1100px) {
  .rail { display: none; }
  .chapter[data-side="right"] { padding-right: var(--gutter); }
}

@media (max-width: 819px), (max-aspect-ratio: 1/1) {
  :root { --bar-h: 60px; }
  .bar { padding-block: calc(env(safe-area-inset-top, 0px) + 14px) 14px; }
  .now-label { display: none; }
  .btn-index { padding-inline: 12px; }

  .chapter { display: block; min-height: 0; padding-top: 62vh; padding-bottom: 30vh; }
  .chapter[data-side="right"] { padding-right: var(--gutter); }
  .folio {
    position: relative; top: auto; width: auto; max-width: 34rem; margin: 0;
    padding: 28px 20px 26px; text-shadow: none;
    background: color-mix(in srgb, var(--ground) 84%, transparent);
    box-shadow: 0 -48px 48px -8px color-mix(in srgb, var(--ground) 70%, transparent);
  }
  .chapter[data-side="right"] .folio { margin-left: auto; }

  .hero-foot { flex-direction: column; align-items: stretch; }
  .cue { justify-items: start; text-align: left; }

  .terms { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shaper { gap: 44vh; }
  .index { background: color-mix(in srgb, var(--ground) 94%, transparent); }
  .colophon { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .terms { grid-template-columns: minmax(0, 1fr); }
  .index-list a { grid-template-columns: 2.4rem minmax(0, 1fr); }
  .i-when { grid-column: 2; text-align: left; }
  .btn-mail { display: none; }
  .ledger { gap: 14px 36px; }
  .ledger div + div::before { left: -26px; }
}