/* ============================================================
   The Watcher and the Watched — Iridescent Cloud Edge, scientific rendering
   Ground: cloud white (solar) / lunar night. Ink: slate.
   Color exists only at edges: one narrow spectral band, mint → rose → violet.
   Mono is measurement. Gentium italic is the philologist's voice.
   ============================================================ */

:root {
  --ground: #fcfcfa;
  --ground-raised: #ffffff;
  --ink: #333a47;
  --ink-soft: #58606f;
  --ink-faint: #838b99;         /* large/decorative text only */
  --hairline: #dcdfe3;
  --hairline-strong: #b9bec6;
  --accent: #5a3fa8;            /* violet ink — links, active */
  --accent-soft: #7a63c0;
  --mint: #a9e2c9;
  --rose: #f0c0d2;
  --violet: #c0a8f0;
  --band-opacity: 0.85;
  --band-opacity-faint: 0.28;
  --focus-ring: #5a3fa8;
  --shadow: 0 10px 28px -12px rgba(51, 58, 71, 0.28);
  --sans: "Mulish", "Helvetica Neue", Arial, sans-serif;
  --display: "Jost", "Avenir Next", "Futura", sans-serif;
  --mono: "Spline Sans Mono", "Menlo", monospace;
  --philology: "Gentium Book Plus", Georgia, serif;
}

html[data-theme="dark"] {
  --ground: #111420;
  --ground-raised: #181c2a;
  --ink: #d7dbe3;
  --ink-soft: #9aa3b3;
  --ink-faint: #6f7889;
  --hairline: #272c3b;
  --hairline-strong: #3a4154;
  --accent: #b5a2ee;
  --accent-soft: #8f7ad0;
  --mint: #8ed4b2;
  --rose: #dfa2bc;
  --violet: #b99cef;
  --band-opacity: 0.8;
  --band-opacity-faint: 0.3;
  --focus-ring: #b5a2ee;
  --shadow: 0 10px 28px -12px rgba(0, 0, 0, 0.65);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --ground: #111420;
    --ground-raised: #181c2a;
    --ink: #d7dbe3;
    --ink-soft: #9aa3b3;
    --ink-faint: #6f7889;
    --hairline: #272c3b;
    --hairline-strong: #3a4154;
    --accent: #b5a2ee;
    --accent-soft: #8f7ad0;
    --mint: #8ed4b2;
    --rose: #dfa2bc;
    --violet: #b99cef;
    --band-opacity: 0.8;
    --band-opacity-faint: 0.3;
    --focus-ring: #b5a2ee;
    --shadow: 0 10px 28px -12px rgba(0, 0, 0, 0.65);
  }
}

/* ---------- reset & ground ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.75;
  transition: background-color 0.4s ease, color 0.4s ease;
}

::selection { background: var(--violet); color: #1c1430; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-soft); }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- the fringe rail (fixed, desktop) ---------- */

.rail {
  position: fixed;
  top: 0;
  left: 0;
  width: 5.5rem;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 40;
}

.rail ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.55rem;
  position: relative;
}

.rail ol::before {
  content: "";
  position: absolute;
  top: -1.4rem;
  bottom: -1.4rem;
  left: 0.6rem;
  width: 1px;
  background: var(--hairline);
}

.rail a {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.rail a .tick {
  width: 1.25rem;
  height: 1px;
  background: var(--hairline-strong);
  flex: none;
  transition: background 0.25s ease;
}

.rail a .rung-label {
  position: absolute;
  left: 4.4rem;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  background: var(--ground);
  padding: 0.1rem 0.4rem;
}

.rail li { position: relative; }

.rail a:hover .rung-label,
.rail a:focus-visible .rung-label { opacity: 1; transform: none; }

.rail a:hover { color: var(--ink); }

.rail li.active a { color: var(--ink); }
.rail li.active a .tick {
  height: 3px;
  background: var(--rung-hue, var(--accent));
}
.rail li.active .rung-label { opacity: 1; transform: none; }

/* ---------- header ---------- */

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.6rem 0 0;
}

.masthead .site-name {
  font-family: var(--display);
  font-weight: 400;
  font-size: 0.95rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

@media (max-width: 960px) {
  .masthead .site-name {
    font-size: 0.74rem;
    letter-spacing: 0.2em;
  }
}

.masthead .site-name:hover { color: var(--accent); }

.masthead-controls {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.mode-toggle {
  appearance: none;
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  padding: 0.42rem 0.8rem;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.mode-toggle:hover { border-color: var(--hairline-strong); color: var(--ink); }

.mode-toggle .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mint), var(--rose), var(--violet));
  flex: none;
}

/* ---------- page frame ---------- */

.shell {
  margin-left: 5.5rem;
  padding: 0 clamp(1.25rem, 5vw, 4.5rem);
}

.page {
  max-width: 46rem;
  margin: 0 auto;
}

/* wide pages (index hero, waves diagram) may exceed the measure */
.page-wide { max-width: 62rem; }

/* ---------- display type ---------- */

h1 {
  font-family: var(--display);
  font-weight: 250;
  font-size: clamp(2.5rem, 6.4vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: 0.005em;
  margin: 2.2rem 0 1.4rem;
  text-wrap: balance;
  color: var(--ink);
}

/* Indic transliteration in display positions: Jost's macron glyphs read as
   errors at thin weights, so headings that are themselves Sanskrit terms are
   set in the philology face — the same voice the gloss cards speak. */
h3.dia {
  font-family: var(--philology);
  font-weight: 400;
  font-size: 1.32rem;
  letter-spacing: 0.01em;
}

h2 {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(1.5rem, 3vw, 1.95rem);
  line-height: 1.25;
  margin: 3.2rem 0 0.9rem;
  text-wrap: balance;
}

h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.18rem;
  letter-spacing: 0.015em;
  margin: 2.4rem 0 0.6rem;
}

p { margin: 0 0 1.25rem; }

article > p, article > ul, article > ol { max-width: 46rem; }

strong { font-weight: 700; }
em { font-style: italic; }

hr {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: 3rem 0;
}

blockquote {
  margin: 2.2rem 0;
  padding: 0 0 0 1.4rem;
  border-left: 1px solid var(--hairline-strong);
  font-family: var(--philology);
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--ink);
}

blockquote p { margin-bottom: 0.4rem; }

blockquote cite {
  display: block;
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin-top: 0.7rem;
  text-transform: uppercase;
}

/* ---------- apparatus (the measured line under a page title) ---------- */

.apparatus {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 0.55rem 0;
  margin: 0 0 2.6rem;
}

.apparatus .sep { color: var(--ink-soft); }

/* ---------- the band ---------- */

.band {
  position: relative;
  height: 3.4rem;
  margin: 2.8rem 0 0;
  overflow: hidden;
}

.band::before,
.band::after {
  content: "";
  position: absolute;
  inset: 0;
}

/* faint full spectrum, always present */
.band::before {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--mint) 18%,
    var(--rose) 48%,
    var(--violet) 82%,
    transparent 100%
  );
  opacity: var(--band-opacity-faint);
  filter: blur(10px);
}

/* vivid drifting layer */
.band::after {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--mint) 22%,
    var(--rose) 50%,
    var(--violet) 78%,
    transparent 100%
  );
  background-size: 220% 100%;
  opacity: var(--band-opacity);
  filter: blur(14px) saturate(1.1);
  animation: drift 46s ease-in-out infinite alternate;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent,
    #000 35%,
    #000 65%,
    transparent
  );
  mask-image: linear-gradient(90deg, transparent, #000 35%, #000 65%, transparent);
}

/* on rung pages the vivid window centers on the rung's spectral position */
.band-located::after {
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent calc(var(--pos) - 22%),
    #000 var(--pos),
    transparent calc(var(--pos) + 22%)
  );
  mask-image: linear-gradient(
    90deg,
    transparent calc(var(--pos) - 22%),
    #000 var(--pos),
    transparent calc(var(--pos) + 22%)
  );
}

.band-thin { height: 1.1rem; margin: 0; }
.band-thin::before { filter: blur(5px); }
.band-thin::after { filter: blur(6px) saturate(1.1); }

/* diffraction texture: fine horizontal striations + droplet noise, unblurred,
   riding above the gradient layers so the band reads as diffraction, not a smear */
.band .grain {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E"),
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0 1px, transparent 1px 3px);
  background-size: 140px 140px, auto;
  mix-blend-mode: overlay;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
}

html[data-theme="dark"] .band .grain { opacity: 0.35; }

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .band .grain { opacity: 0.35; }
}

@keyframes drift {
  from { background-position: 0% 0; }
  to { background-position: 100% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .band::after { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- the scale (ruled ticks under the band) ---------- */

.scale {
  position: relative;
  border-top: 1px solid var(--hairline-strong);
  margin: 0 0 3rem;
  height: 7.2rem;
}

.scale .tickmark {
  position: absolute;
  top: 0;
  transform: translateX(-0.5px);
  width: 1px;
  height: 0.65rem;
  background: var(--hairline-strong);
}

.scale .tickmark.minor { height: 0.35rem; background: var(--hairline); }

.scale-stop {
  position: absolute;
  top: 0;
  width: 8.5rem;
  margin-left: -0.4rem;
  padding-top: 1.1rem;
  text-decoration: none;
  color: var(--ink-soft);
}

.scale-stop .n {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.scale-stop .t {
  display: block;
  font-family: var(--display);
  font-weight: 400;
  font-size: 0.86rem;
  line-height: 1.3;
  color: var(--ink);
  margin-top: 0.2rem;
}

.scale-stop:hover .t, .scale-stop:focus-visible .t { color: var(--accent); }
.scale-stop:hover .n { color: var(--accent); }

.measure { max-width: 46rem; }

.begin {
  display: inline-block;
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.28rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  padding-bottom: 0.15rem;
  margin-top: 0.4rem;
}

.begin:hover { color: var(--accent-soft); }

.scale-note {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: -1.4rem 0 3rem;
}

.scale-note a { color: var(--ink-soft); }
.scale-note a:hover { color: var(--accent); }

.scale-stop.flip {
  margin-left: -8.1rem;
  text-align: right;
}

@media (max-width: 960px) {
  .scale-stop.flip { margin-left: 0; text-align: left; }
  .scale-note { margin-top: 0; }
}

/* ---------- prose furniture ---------- */

.lede {
  font-size: 1.22rem;
  line-height: 1.72;
  font-weight: 300;
  color: var(--ink);
}

ul, ol { padding-left: 1.3rem; }
li { margin-bottom: 0.45rem; }

/* claim labels: measurement tags, not badges */
.claim {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
  vertical-align: 0.12em;
  margin-right: 0.55rem;
  white-space: nowrap;
}

.claim::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 1px;
  flex: none;
}

.claim.textual::before { background: var(--ink-soft); }
.claim.interpretation::before { background: var(--violet); }
.claim.practice::before { background: var(--mint); border: 1px solid var(--hairline-strong); }

/* the label legend (used once per page where labels appear) */
.claim-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
  border-top: 1px solid var(--hairline);
  padding-top: 0.7rem;
  margin: 2.6rem 0 1.6rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* ---------- margin notes & the Skeptic ---------- */

.margin-note {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--ink-soft);
  border-top: 1px solid var(--hairline-strong);
  padding-top: 0.65rem;
  margin: 2rem 0;
}

.margin-note .note-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.45rem;
}

.margin-note p { margin-bottom: 0.55rem; }
.margin-note p:last-child { margin-bottom: 0; }

@media (min-width: 1440px) {
  .page:not(.page-wide) { position: relative; }
  .margin-note {
    float: right;
    clear: right;
    width: 12.5rem;
    margin: 0.25rem -14.25rem 1.5rem 1.5rem;
  }
}

/* ---------- gloss terms ---------- */

.gl {
  appearance: none;
  background: none;
  border: none;
  padding: 0;
  font-family: var(--philology);
  font-style: italic;
  font-size: 1.02em;
  color: inherit;
  cursor: help;
  text-decoration: underline dotted 1px;
  text-decoration-color: var(--accent-soft);
  text-underline-offset: 4px;
}

.gl:hover { color: var(--accent); }

.gloss-card {
  position: absolute;
  z-index: 60;
  width: min(21rem, calc(100vw - 2rem));
  background: var(--ground-raised);
  border: 1px solid var(--hairline-strong);
  border-radius: 3px;
  box-shadow: var(--shadow);
  padding: 1rem 1.1rem 0.95rem;
}

.gloss-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), var(--rose), var(--violet));
}

.gloss-card .g-term {
  font-family: var(--philology);
  font-style: italic;
  font-size: 1.18rem;
  color: var(--ink);
}

.gloss-card .g-meta {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0.25rem 0 0.55rem;
}

.gloss-card .g-def {
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--ink);
  margin: 0;
}

/* ---------- the observer instrument ---------- */

.instrument {
  border: 1px solid var(--hairline-strong);
  border-radius: 3px;
  padding: 1.5rem 1.6rem 1.6rem;
  margin: 2.6rem 0;
  background: var(--ground-raised);
}

.instrument .inst-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
}

.instrument .inst-intro { font-size: 0.95rem; color: var(--ink); }

.inst-candidates {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.1rem 0;
  padding: 0;
  list-style: none;
}

.inst-candidates li { margin: 0; }

.inst-candidates button {
  appearance: none;
  font-family: var(--sans);
  font-size: 0.92rem;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.inst-candidates button:hover { border-color: var(--accent-soft); }

.inst-candidates button[data-found="true"] {
  border-color: var(--accent-soft);
  color: var(--ink-soft);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.inst-candidates button[data-found="true"]::after {
  content: " — observed";
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--accent);
}

.inst-readout {
  min-height: 2.4rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-soft);
  border-top: 1px solid var(--hairline);
  padding-top: 0.8rem;
  margin-top: 0.4rem;
}

.inst-readout .final { color: var(--ink); }

/* ---------- waves diagram ---------- */

.waves {
  margin: 2.8rem 0;
  border-top: 1px solid var(--hairline-strong);
}

.wave-row {
  display: grid;
  grid-template-columns: 5.2rem 1fr;
  gap: 0 1.6rem;
  border-bottom: 1px solid var(--hairline);
  padding: 1.6rem 0 1.7rem;
  position: relative;
}

.wave-row .wave-meta {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-soft);
  line-height: 1.9;
}

.wave-row .wave-band {
  height: 0.55rem;
  margin: 0.5rem 0 0.9rem;
  border-radius: 1px;
  opacity: 0.8;
}

.wave-row h3 { margin: 0 0 0.35rem; }

.wave-row .wave-what {
  font-family: var(--philology);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 0.6rem;
}

.wave-row p { font-size: 0.97rem; margin-bottom: 0.6rem; }

.wave-row .wave-book {
  font-size: 0.86rem;
  color: var(--ink-soft);
}

/* ---------- books page ---------- */

.book {
  border-top: 1px solid var(--hairline-strong);
  padding: 2rem 0 1.4rem;
}

.book .book-meta {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: -0.5rem 0 1.1rem;
}

.book h2 { margin: 0 0 0.2rem; }

.book .book-author {
  font-family: var(--philology);
  font-style: italic;
  font-size: 1.08rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.book .open-first {
  font-size: 0.9rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--hairline);
  padding-top: 0.75rem;
  margin-top: 1.1rem;
}

.book .open-first strong { color: var(--ink); font-weight: 600; }

/* ---------- continue (prev / next) ---------- */

.continue {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  border-top: 1px solid var(--hairline-strong);
  margin-top: 4.2rem;
  padding-top: 1.4rem;
}

.continue a {
  text-decoration: none;
  max-width: 46%;
}

.continue .dir {
  display: block;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.3rem;
}

.continue .where {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.06rem;
  color: var(--ink);
  line-height: 1.3;
}

.continue a:hover .where { color: var(--accent); }
.continue .next { text-align: right; margin-left: auto; }

/* ---------- footer ---------- */

.site-foot {
  margin: 5rem 0 0;
  border-top: 1px solid var(--hairline);
  padding: 1.6rem 0 2.8rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.site-foot p { margin-bottom: 0.5rem; max-width: 46rem; }

.site-foot .colophon {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin-top: 1.1rem;
}

/* ---------- mobile ---------- */

.rungs-menu { display: none; }

@media (max-width: 960px) {
  .rail { display: none; }
  .shell { margin-left: 0; }

  .rungs-menu { display: block; position: relative; }

  .rungs-menu > summary {
    list-style: none;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-soft);
    border: 1px solid var(--hairline);
    border-radius: 999px;
    padding: 0.42rem 0.8rem;
  }

  .rungs-menu > summary::-webkit-details-marker { display: none; }

  .rungs-menu[open] > summary { color: var(--ink); border-color: var(--hairline-strong); }

  .rungs-menu .menu-list {
    position: absolute;
    right: 0;
    top: calc(100% + 0.5rem);
    z-index: 50;
    min-width: 16.5rem;
    background: var(--ground-raised);
    border: 1px solid var(--hairline-strong);
    border-radius: 3px;
    box-shadow: var(--shadow);
    list-style: none;
    margin: 0;
    padding: 0.5rem 0;
  }

  .rungs-menu .menu-list a {
    display: flex;
    gap: 0.8rem;
    align-items: baseline;
    padding: 0.5rem 1.1rem;
    text-decoration: none;
    color: var(--ink);
    font-size: 0.92rem;
  }

  .rungs-menu .menu-list a .n {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    color: var(--ink-soft);
  }

  .rungs-menu .menu-list li.active a { color: var(--accent); }
  .rungs-menu .menu-list a:hover { background: color-mix(in srgb, var(--violet) 12%, transparent); }

  .scale { height: auto; border-top: none; margin-bottom: 2.2rem; }
  .scale .tickmark { display: none; }
  .scale-stop {
    position: static;
    display: flex;
    gap: 0.9rem;
    align-items: baseline;
    width: auto;
    margin: 0;
    padding: 0.55rem 0;
    border-top: 1px solid var(--hairline);
  }
  .scale-stop .t { margin: 0; }

  .continue { flex-direction: column; }
  .continue a { max-width: none; }
  .continue .next { text-align: left; margin-left: 0; }

  .wave-row { grid-template-columns: 1fr; gap: 0.6rem; }
}