:root {
  --brass-hi: #e0c078;
  --brass: #c9a24a;
  --brass-deep: #8a6a24;

  --bg: #0c0d0f;
  --bg-lift: #121316;
  --panel: rgba(255, 255, 255, 0.018);

  --ink: #eceae5;
  --ink-dim: #a7a49d;
  --ink-faint: #77746d;

  --rule: rgba(224, 192, 120, 0.13);
  --rule-soft: rgba(224, 192, 120, 0.07);

  --sans: "Segoe UI Variable Text", "Segoe UI", ui-sans-serif, system-ui,
    -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, monospace;

  --gutter: clamp(1.25rem, 5vw, 4rem);
  --measure: 68rem;

  --dial-x: 74%;
  --dial-y: 36%;
  --shell-1: 30rem;
  --shell-2: 42rem;
  --shell-3: 57rem;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(
      110vw 90vh at 78% 12%,
      rgba(201, 162, 74, 0.11),
      transparent 62%
    ),
    radial-gradient(80vw 70vh at 8% 96%, rgba(138, 106, 36, 0.07), transparent 60%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(
      circle 1px at 17% 23%,
      rgba(236, 234, 229, 0.55) 0 0.9px,
      transparent 1px
    ),
    radial-gradient(
      circle 1px at 69% 61%,
      rgba(224, 192, 120, 0.5) 0 0.9px,
      transparent 1px
    ),
    radial-gradient(
      circle 1.5px at 42% 84%,
      rgba(236, 234, 229, 0.3) 0 1.3px,
      transparent 1.5px
    ),
    radial-gradient(
      circle at var(--dial-x) var(--dial-y),
      transparent calc(var(--shell-1) - 1px),
      var(--rule) calc(var(--shell-1) - 1px) var(--shell-1),
      transparent var(--shell-1)
    ),
    radial-gradient(
      circle at var(--dial-x) var(--dial-y),
      transparent calc(var(--shell-2) - 1px),
      var(--rule-soft) calc(var(--shell-2) - 1px) var(--shell-2),
      transparent var(--shell-2)
    ),
    radial-gradient(
      circle at var(--dial-x) var(--dial-y),
      transparent calc(var(--shell-3) - 1px),
      var(--rule-soft) calc(var(--shell-3) - 1px) var(--shell-3),
      transparent var(--shell-3)
    );
  background-size: 317px 211px, 233px 281px, 401px 347px, auto, auto, auto;
  background-repeat: repeat, repeat, repeat, no-repeat, no-repeat, no-repeat;
  -webkit-mask-image: radial-gradient(
    120vw 105vh at var(--dial-x) 16%,
    #000 14%,
    rgba(0, 0, 0, 0.8) 48%,
    transparent 84%
  );
  mask-image: radial-gradient(
    120vw 105vh at var(--dial-x) 16%,
    #000 14%,
    rgba(0, 0, 0, 0.8) 48%,
    transparent 84%
  );
  pointer-events: none;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--brass-hi);
  text-decoration-color: rgba(224, 192, 120, 0.35);
  text-underline-offset: 0.22em;
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

a:hover {
  color: #f2e2bb;
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 1px solid var(--brass);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: var(--gutter);
  top: 1rem;
  z-index: 20;
  padding: 0.5rem 0.9rem;
  background: var(--bg-lift);
  border: 1px solid var(--rule);
}

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.masthead {
  position: relative;
  z-index: 3;
  padding-block: clamp(1.5rem, 3vw, 2.25rem);
}

.masthead .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sigil {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
}

.sigil img {
  width: 30px;
  height: 30px;
  flex: none;
}

.sigil span {
  font-size: 0.8rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.masthead nav {
  display: flex;
  gap: clamp(1rem, 3vw, 1.9rem);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.masthead nav a {
  color: var(--ink-faint);
  text-decoration: none;
}

.masthead nav a:hover {
  color: var(--brass-hi);
}

.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
  padding-block: clamp(2.5rem, 7vw, 6rem) clamp(3.5rem, 9vw, 7rem);
}

.wordmark {
  margin: 0;
  font-size: clamp(3.1rem, 12vw, 6.5rem);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.wordmark span {
  background: linear-gradient(
    103deg,
    #fffaef 4%,
    var(--brass-hi) 34%,
    var(--brass) 62%,
    #a9822f 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@media (min-width: 60rem) {
  .wordmark {
    font-size: clamp(3.1rem, 9vw, 6.25rem);
  }
}

.lede {
  margin: clamp(1.3rem, 3vw, 1.9rem) 0 0;
  max-width: 34ch;
  font-size: clamp(1.28rem, 1.05rem + 1.1vw, 1.85rem);
  font-weight: 300;
  line-height: 1.32;
  letter-spacing: -0.012em;
  color: var(--ink);
}

.lede em {
  font-style: normal;
  color: var(--brass-hi);
}

.sub {
  margin: clamp(1.1rem, 2.5vw, 1.5rem) 0 0;
  max-width: 46ch;
  color: var(--ink-dim);
}

.instrument {
  justify-self: center;
  width: 100%;
  max-width: 30rem;
  aspect-ratio: 1;
}

.instrument svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  filter: drop-shadow(0 0 34px rgba(201, 162, 74, 0.16));
}

.meridian {
  transform-origin: 200px 200px;
  animation: turn 34s linear infinite;
}

.meridian--b {
  animation-delay: -5.667s;
}

.meridian--c {
  animation-delay: -11.333s;
}

@keyframes turn {
  0% {
    transform: scaleX(1);
  }
  8.33% {
    transform: scaleX(0.866);
  }
  16.66% {
    transform: scaleX(0.5);
  }
  25% {
    transform: scaleX(0.001);
  }
  33.33% {
    transform: scaleX(-0.5);
  }
  41.66% {
    transform: scaleX(-0.866);
  }
  50% {
    transform: scaleX(-1);
  }
  58.33% {
    transform: scaleX(-0.866);
  }
  66.66% {
    transform: scaleX(-0.5);
  }
  75% {
    transform: scaleX(0.001);
  }
  83.33% {
    transform: scaleX(0.5);
  }
  91.66% {
    transform: scaleX(0.866);
  }
  100% {
    transform: scaleX(1);
  }
}

.bezel {
  transform-origin: 200px 200px;
  animation: creep 240s linear infinite;
}

@keyframes creep {
  to {
    transform: rotate(360deg);
  }
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(
    90deg,
    transparent,
    var(--rule) 18%,
    var(--rule) 82%,
    transparent
  );
}

.section {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.section--tight {
  padding-top: 0;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin: 0 0 clamp(2rem, 4vw, 3rem);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.facets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: 1px;
  background: var(--rule-soft);
  border: 1px solid var(--rule-soft);
}

.facet {
  position: relative;
  padding: clamp(1.6rem, 3.5vw, 2.4rem);
  background: var(--bg);
  transition: background 0.25s ease;
}

.facet::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(
    18rem 14rem at 100% 0%,
    rgba(201, 162, 74, 0.09),
    transparent 70%
  );
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.facet:hover::before {
  opacity: 1;
}

.facet h3 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.facet p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.98rem;
}

.closing {
  position: relative;
  border: 1px solid var(--rule);
  padding: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(
    160deg,
    rgba(224, 192, 120, 0.045),
    rgba(224, 192, 120, 0) 55%
  );
  text-align: center;
}

.closing h2 {
  margin: 0 auto;
  max-width: 24ch;
  font-size: clamp(1.5rem, 1.15rem + 1.6vw, 2.35rem);
  font-weight: 300;
  line-height: 1.22;
  letter-spacing: -0.015em;
}

.closing p {
  margin: 1.1rem auto 0;
  max-width: 44ch;
  color: var(--ink-dim);
}

.stamp {
  display: inline-block;
  margin-top: clamp(1.6rem, 3vw, 2.2rem);
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--brass-hi);
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.stamp:hover {
  border-color: rgba(224, 192, 120, 0.4);
  background: rgba(224, 192, 120, 0.06);
}

.foot {
  border-top: 1px solid var(--rule-soft);
  padding-block: clamp(2rem, 4vw, 2.75rem);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.foot .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.75rem;
}

.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.foot a {
  color: var(--ink-faint);
  text-decoration: none;
}

.foot a:hover {
  color: var(--brass-hi);
}

.foot .disclaim {
  flex-basis: 100%;
  color: #5d5a55;
  font-size: 0.72rem;
}

.doc {
  padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 7vw, 5rem);
}

.doc .wrap {
  max-width: 46rem;
}

.doc-head {
  margin-bottom: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(1.5rem, 3vw, 2rem);
  border-bottom: 1px solid var(--rule);
}

.doc-head h1 {
  margin: 0;
  font-size: clamp(1.9rem, 1.4rem + 2vw, 2.9rem);
  font-weight: 300;
  letter-spacing: -0.02em;
}

.doc-head .meta {
  margin: 0.9rem 0 0;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

.notice {
  margin: 0 0 clamp(2rem, 4vw, 2.75rem);
  padding: 1.05rem 1.25rem;
  border: 1px solid var(--rule);
  border-left: 2px solid var(--brass);
  background: rgba(224, 192, 120, 0.035);
  color: var(--ink-dim);
  font-size: 0.92rem;
}

.notice strong {
  color: var(--brass-hi);
  font-weight: 500;
}

.doc article > section {
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
}

.doc h2 {
  margin: 0 0 0.9rem;
  font-size: 1.16rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.doc h2 .n {
  display: inline-block;
  min-width: 2.1em;
  font-family: var(--mono);
  font-size: 0.82em;
  color: var(--brass);
  opacity: 0.8;
}

.doc h3 {
  margin: 1.6rem 0 0.6rem;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--ink);
}

.doc p,
.doc li {
  color: var(--ink-dim);
}

.doc p {
  margin: 0 0 1rem;
}

.doc ul {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
}

.doc li {
  margin-bottom: 0.5rem;
}

.doc li::marker {
  color: var(--brass-deep);
}

.doc strong {
  color: var(--ink);
  font-weight: 500;
}

.toc {
  margin: 0 0 clamp(2.25rem, 5vw, 3rem);
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--rule-soft);
  background: var(--panel);
}

.toc p {
  margin: 0 0 0.75rem;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  columns: 2;
  column-gap: 2rem;
  font-size: 0.9rem;
}

.toc li {
  margin-bottom: 0.35rem;
  break-inside: avoid;
}

.toc a {
  text-decoration: none;
}

.toc a:hover {
  text-decoration: underline;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.reveal.seen {
  opacity: 1;
  transform: none;
}

.js-off .reveal {
  opacity: 1;
  transform: none;
}

@media (max-width: 60rem) {
  :root {
    --dial-x: 50%;
    --dial-y: 27%;
    --shell-1: 20rem;
    --shell-2: 29rem;
    --shell-3: 40rem;
  }

  .hero .wrap {
    grid-template-columns: 1fr;
    justify-items: start;
    padding-block: 1rem clamp(3rem, 8vw, 4rem);
  }

  .instrument {
    order: -1;
    justify-self: center;
    max-width: min(20rem, 68vw);
    margin-bottom: clamp(1rem, 4vw, 2rem);
  }

  .lede,
  .sub {
    max-width: 40ch;
  }

  .toc ol {
    columns: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  body::before,
  body::after {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .doc p,
  .doc li,
  .doc .meta {
    color: #222;
  }
}