/* Earn Index — correction chamber / registration press
   Signature: printer registration marks + luminous revision ticks on a night field */

:root {
  color-scheme: light;

  --night: #0B1020;
  --night-2: #141B2F;
  --mist: #E8EDF5;
  --paper: #F5F7FB;
  --ink: #121826;
  --ink-2: #3A4258;
  --ink-3: #6B7389;
  --line: #C8D0DE;
  --line-soft: #DCE2EC;
  --cyan: #1AA6B7;
  --cyan-deep: #0E7A88;
  --magenta: #D7266E;
  --amber: #E8A317;

  --display: "Syne", "Segoe UI", sans-serif;
  --text: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", "Consolas", monospace;

  --shell: 70rem;
  --gutter: clamp(1.25rem, 4.8vw, 3.5rem);
  --band: clamp(3.25rem, 7vw, 6rem);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-size: clamp(1.0625rem, 1rem + 0.28vw, 1.1875rem);
  font-optical-sizing: auto;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.skip {
  position: absolute;
  left: -9999px;
  background: var(--cyan);
  color: var(--night);
  padding: 0.75rem 1.15rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  text-decoration: none;
  z-index: 40;
}
.skip:focus { left: 0.75rem; top: 0.75rem; }

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

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

/* ---------- registration mark motif ---------- */

.reg {
  width: 1.1rem;
  height: 1.1rem;
  position: relative;
  flex-shrink: 0;
}
.reg::before,
.reg::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.reg::before {
  left: 50%; top: 0; bottom: 0;
  width: 1.5px; transform: translateX(-50%);
}
.reg::after {
  top: 50%; left: 0; right: 0;
  height: 1.5px; transform: translateY(-50%);
}
.reg--cyan { color: var(--cyan); }
.reg--mag { color: var(--magenta); }

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

.top {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--night) 92%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--cyan) 28%, transparent);
  color: var(--mist);
}

.top__id {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 1rem 0.65rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: #fff;
  text-decoration: none;
}
.brand:hover { color: #fff; }
.brand__glyph { width: 1.7rem; height: 1.35rem; }

.top__meta {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--mist) 55%, transparent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.6rem;
  padding-block: 0.55rem 0.9rem;
}
.nav a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--mist) 72%, transparent);
  text-decoration: none;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav a:hover { color: #fff; }
.nav a[aria-current] {
  color: #fff;
  border-bottom-color: var(--magenta);
}

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

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(2.35rem, 1.4rem + 3.6vw, 4.35rem); font-weight: 800; }
h2 { font-size: clamp(1.55rem, 1.2rem + 1.4vw, 2.35rem); margin-block: 0.35rem 0.95rem; }
h3 { font-size: clamp(1.2rem, 1.05rem + 0.55vw, 1.45rem); font-weight: 700; }

p { margin-block: 0 1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--cyan-deep); text-underline-offset: 0.18em; }
a:hover { color: var(--magenta); }

.label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-deep);
  margin: 0 0 0.65rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.label .reg { width: 0.85rem; height: 0.85rem; }
.label--mute { color: var(--ink-3); }

/* ---------- HERO (full-bleed night) ---------- */

.hero {
  position: relative;
  isolation: isolate;
  background: var(--night);
  color: var(--mist);
  min-height: min(92vh, 54rem);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-block: clamp(3.5rem, 9vw, 7rem) clamp(2.5rem, 5vw, 4rem);
}

/* Dominant visual plane: layered grid + aurora + bars */
.hero__field {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 55% at 78% 18%, rgba(26, 166, 183, 0.22), transparent 55%),
    radial-gradient(ellipse 55% 45% at 12% 85%, rgba(215, 38, 110, 0.16), transparent 50%),
    radial-gradient(ellipse 90% 70% at 50% 110%, rgba(20, 27, 47, 0.95), transparent 60%),
    linear-gradient(180deg, var(--night) 0%, var(--night-2) 100%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(232, 237, 245, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 237, 245, 0.06) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(180deg, #000 20%, transparent 95%);
  -webkit-mask-image: linear-gradient(180deg, #000 20%, transparent 95%);
}

.hero__bars {
  position: absolute;
  right: max(2%, calc((100% - var(--shell)) / 2 - 1rem));
  bottom: 12%;
  top: 18%;
  width: min(38vw, 22rem);
  display: flex;
  align-items: flex-end;
  gap: 0.55rem;
  opacity: 0.9;
  pointer-events: none;
}
.hero__bars span {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, var(--cyan), transparent);
  animation: rise 1.4s cubic-bezier(0.22, 1, 0.36, 1) both;
  transform-origin: bottom;
}
.hero__bars span:nth-child(1) { height: 28%; animation-delay: 0.05s; opacity: 0.35; }
.hero__bars span:nth-child(2) { height: 52%; animation-delay: 0.12s; opacity: 0.5; }
.hero__bars span:nth-child(3) { height: 38%; animation-delay: 0.18s; opacity: 0.4; background: linear-gradient(180deg, var(--magenta), transparent); }
.hero__bars span:nth-child(4) { height: 72%; animation-delay: 0.24s; opacity: 0.7; }
.hero__bars span:nth-child(5) { height: 46%; animation-delay: 0.3s; opacity: 0.45; }
.hero__bars span:nth-child(6) { height: 88%; animation-delay: 0.36s; opacity: 0.85; }
.hero__bars span:nth-child(7) { height: 34%; animation-delay: 0.42s; opacity: 0.4; background: linear-gradient(180deg, var(--amber), transparent); }
.hero__bars span:nth-child(8) { height: 61%; animation-delay: 0.48s; opacity: 0.55; }

@keyframes rise {
  from { transform: scaleY(0); opacity: 0; }
  to { transform: scaleY(1); }
}

.hero__marks {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__marks .reg {
  position: absolute;
  width: 1.35rem;
  height: 1.35rem;
  opacity: 0.7;
}
.hero__marks .reg:nth-child(1) { top: 1.5rem; left: var(--gutter); color: var(--cyan); }
.hero__marks .reg:nth-child(2) { top: 1.5rem; right: var(--gutter); color: var(--magenta); }
.hero__marks .reg:nth-child(3) { bottom: 1.5rem; left: var(--gutter); color: var(--magenta); }
.hero__marks .reg:nth-child(4) { bottom: 1.5rem; right: var(--gutter); color: var(--cyan); }

.hero__brand {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(3.2rem, 2rem + 8vw, 8.5rem);
  letter-spacing: -0.055em;
  line-height: 0.88;
  color: #fff;
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  max-width: 11ch;
  animation: fadeUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero__headline {
  font-family: var(--display);
  font-weight: 650;
  font-size: clamp(1.25rem, 1.05rem + 1.1vw, 1.85rem);
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: color-mix(in srgb, var(--mist) 92%, transparent);
  max-width: 28ch;
  margin: 0 0 1.1rem;
  animation: fadeUp 0.9s 0.12s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero__stand {
  font-family: var(--text);
  font-size: clamp(1.05rem, 0.98rem + 0.35vw, 1.2rem);
  line-height: 1.55;
  color: color-mix(in srgb, var(--mist) 68%, transparent);
  max-width: 38ch;
  margin: 0;
  animation: fadeUp 0.9s 0.22s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.25rem;
  border-top: 1px solid color-mix(in srgb, var(--mist) 18%, transparent);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--mist) 55%, transparent);
  animation: fadeUp 0.9s 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.hero__meta b {
  color: var(--cyan);
  font-weight: 500;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(1.25rem); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- spine / revision track ---------- */

.spine {
  position: relative;
  height: 3.25rem;
  background: var(--night-2);
  border-block: 1px solid color-mix(in srgb, var(--cyan) 35%, transparent);
  overflow: hidden;
}
.spine__track {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  top: 50%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan) 8%, var(--line) 50%, var(--magenta) 92%, transparent);
  transform: translateY(-50%);
}
.spine__tick {
  position: absolute;
  top: 50%;
  width: 0.85rem;
  height: 0.85rem;
  background: var(--paper);
  border: 2px solid var(--magenta);
  transform: translate(-50%, -50%) rotate(45deg);
  animation: pulseTick 2.8s ease-in-out infinite;
}
.spine__tick--a { left: 18%; border-color: var(--cyan); animation-delay: 0s; }
.spine__tick--b { left: 48%; animation-delay: 0.45s; }
.spine__tick--c { left: 78%; border-color: var(--amber); animation-delay: 0.9s; }

@keyframes pulseTick {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--magenta) 18%, transparent); }
}

/* ---------- post-hero content ---------- */

.opening {
  padding-block: var(--band);
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(26, 166, 183, 0.07), transparent 50%),
    var(--paper);
}

.opening__cols {
  columns: 2;
  column-gap: clamp(1.75rem, 4vw, 3.25rem);
  color: var(--ink-2);
  margin-top: 0.5rem;
}
.opening__cols p { break-inside: avoid; }

.ledger {
  margin-top: clamp(2.25rem, 5vw, 3.5rem);
  background: var(--mist);
  border: 1px solid var(--line);
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem);
  overflow: hidden;
}
.ledger::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta), var(--amber));
}
.ledger__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem 1.25rem;
}
.ledger__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  margin: 0;
}
.stamp {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--magenta);
  border: 1px solid color-mix(in srgb, var(--magenta) 55%, transparent);
  padding: 0.28rem 0.55rem;
  background: color-mix(in srgb, var(--magenta) 8%, transparent);
}
.ledger__sub {
  font-size: 0.95rem;
  color: var(--ink-3);
  margin: 0.65rem 0 1.2rem;
}
.tablewrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
caption {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-bottom: 0.7rem;
}
th, td {
  text-align: left;
  padding: 0.75rem 0.85rem 0.75rem 0;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
thead th {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-bottom: 1px solid var(--line);
  font-weight: 500;
}
tbody th { font-weight: 650; }
.rev {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--magenta);
  white-space: nowrap;
}

/* ---------- blocks ---------- */

.block { padding-block: var(--band); }
.block--panel {
  background:
    linear-gradient(180deg, var(--mist), var(--paper));
  border-block: 1px solid var(--line);
}
.block > .shell > p { max-width: 56ch; color: var(--ink-2); }

/* ---------- series ---------- */

.series {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
}

.note {
  display: grid;
  gap: 1rem 2.25rem;
  grid-template-columns: 1fr;
  padding: clamp(1.35rem, 3vw, 2rem);
  background: #fff;
  border: 1px solid var(--line);
  position: relative;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.note::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
.note:hover {
  border-color: color-mix(in srgb, var(--cyan) 45%, var(--line));
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -28px rgba(11, 16, 32, 0.45);
}
.note:hover::before { transform: scaleY(1); }
.note:nth-child(2)::before { background: var(--magenta); }
.note:nth-child(3)::before { background: var(--amber); }

.note__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.note__meta b { color: var(--ink-2); font-weight: 500; }
.note__num {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.5rem, 2rem + 2vw, 3.5rem);
  letter-spacing: -0.05em;
  line-height: 0.9;
  color: color-mix(in srgb, var(--ink) 10%, transparent);
  margin: 0;
}
.note h3 { margin-bottom: 0.55rem; }
.note h3 a { text-decoration: none; color: var(--ink); }
.note h3 a:hover { color: var(--cyan-deep); text-decoration: underline; }
.note p { color: var(--ink-2); font-size: 0.98rem; margin: 0; }

/* ---------- standards ---------- */

.standards {
  list-style: none;
  margin: clamp(1.35rem, 3vw, 2.1rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}
.standards li {
  background: #fff;
  border: 1px solid var(--line);
  padding: 1.25rem 1.25rem 1.25rem 6.75rem;
  position: relative;
  color: var(--ink-2);
}
.standards li::before {
  content: attr(data-mark);
  position: absolute;
  left: 1.1rem;
  top: 1.35rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--magenta);
  writing-mode: horizontal-tb;
}
.standards strong {
  color: var(--ink);
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ---------- defs ---------- */

.defs { margin: clamp(1.25rem, 3vw, 2rem) 0 0; }
.defs dt {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
}
.defs dt:first-of-type { border-top: 1px solid var(--line); }
.defs dd {
  margin: 0.4rem 0 1.1rem;
  color: var(--ink-2);
  font-size: 0.98rem;
  max-width: 68ch;
}

.flag {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid color-mix(in srgb, var(--cyan) 45%, var(--line));
  border-left: 3px solid var(--cyan);
  background: color-mix(in srgb, var(--cyan) 6%, #fff);
  padding: clamp(1rem, 2.5vw, 1.45rem);
}
.flag p { color: var(--ink-2); font-size: 0.95rem; }

/* ---------- prose / articles ---------- */

.prose { max-width: 68ch; }
.prose p, .prose li { color: var(--ink-2); }
.prose h2 { margin-top: 2.35rem; }
.prose h3 { margin-top: 1.75rem; margin-bottom: 0.5rem; }
.prose ul, .prose ol { padding-left: 1.15rem; }
.prose li { margin-bottom: 0.5rem; }

.article__head {
  padding-block: clamp(2.5rem, 6vw, 4rem) 0;
  background:
    radial-gradient(ellipse 60% 80% at 0% 0%, rgba(26, 166, 183, 0.08), transparent 55%),
    var(--paper);
}
.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.5rem;
  margin-top: 1.2rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.article__meta b { color: var(--cyan-deep); font-weight: 500; }

.sources {
  margin-top: 2.35rem;
  border-top: 1px solid var(--line);
  padding-top: 1.35rem;
  font-size: 0.9rem;
  color: var(--ink-3);
}
.sources h2 { font-size: 1.05rem; margin-bottom: 0.65rem; }
.sources li { margin-bottom: 0.45rem; }

.backlink {
  display: inline-block;
  margin-top: 1.85rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.foot {
  background: var(--night);
  color: color-mix(in srgb, var(--mist) 70%, transparent);
  border-top: 1px solid color-mix(in srgb, var(--cyan) 30%, transparent);
  padding-block: clamp(2.25rem, 4.5vw, 3.25rem);
}
.foot__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.5rem;
  padding-bottom: 1.35rem;
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
}
.foot__nav a {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--mist) 75%, transparent);
  text-decoration: none;
}
.foot__nav a:hover { color: var(--cyan); text-decoration: underline; }
.foot__note {
  margin-top: 1.35rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  max-width: 78ch;
}
.foot__note a { color: var(--cyan); }

/* ---------- 404 ---------- */

.void { padding-block: clamp(3.5rem, 9vw, 7rem); }
.void .prose { margin-top: 1.25rem; }

/* ---------- responsive ---------- */

@media (min-width: 52rem) {
  .note {
    grid-template-columns: 7.5rem 14rem 1fr;
    align-items: start;
  }
  .note__meta { flex-direction: column; gap: 0.35rem; }
  .hero__content {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
    align-items: end;
  }
  .hero__bars { opacity: 1; }
}

@media (max-width: 51.99rem) {
  .opening__cols { columns: 1; }
  .standards li { padding-left: 1.15rem; padding-top: 2.6rem; }
  .standards li::before { top: 1.05rem; left: 1.15rem; }
  .hero__bars { opacity: 0.35; width: 55vw; right: -4%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}