@font-face {
  font-family: 'Satoshi';
  src: url('/fonts/Satoshi-Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

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

body {
  margin: 0;
  padding: clamp(0.5rem, 1.6vw, 1.5rem) clamp(0.5rem, 1.6vw, 1.5rem) 0;
  background: var(--mf-ground-deep);
  color: var(--mf-ink);
  font-family: var(--mf-font-text);
  font-size: var(--mf-type-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.sheet {
  --sheet-pad: clamp(1rem, 2.6vw, 2.5rem);
  position: relative;
  max-width: 1360px;
  margin: 0 auto;
  padding: clamp(1rem, 2.4vw, 2.25rem) var(--sheet-pad) 0;
  background: var(--mf-ground);
  border: var(--mf-hairline) solid var(--mf-rule-strong);
}

/* ---------- masthead ---------- */

.masthead {
  display: flex;
  align-items: baseline;
  gap: clamp(0.75rem, 2.5vw, 2rem);
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--mf-ink);
}

.wordmark {
  font-family: var(--mf-font-text);
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--mf-ink);
  text-decoration: none;
}

.contents {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(0.5rem, 1.4vw, 1.1rem);
}

.contents a,
.doc-id,
.section-id,
.ledger-label,
.figure-heading,
.callouts li,
.plate th,
.plate td,
.dock-revision,
.guide-mode,
.quiet-toggle,
.key-item {
  font-family: var(--mf-font-technical);
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
}

.contents a {
  font-size: var(--mf-type-label);
  color: var(--mf-ink-muted);
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: var(--mf-hairline) solid transparent;
}

.contents a:hover,
.contents a:focus-visible {
  color: var(--mf-figure);
  border-bottom-color: var(--mf-figure);
}

.doc-id {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: var(--mf-type-masthead);
  color: var(--mf-ink-muted);
}

.doc-id .divider {
  width: 1px;
  height: 0.85em;
  background: var(--mf-rule-strong);
}

/* ---------- spread ---------- */

.spread {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--mf-ledger-min);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  padding-top: clamp(1.25rem, 2.5vw, 1.75rem);
  padding-bottom: clamp(2.5rem, 4vw, 3.5rem);
}

.section-id {
  margin: 0 0 0.9rem;
  font-size: var(--mf-type-label);
  color: var(--mf-ink-muted);
}

.claim {
  margin: 0 0 0.6rem;
  max-width: 30ch;
  font-size: clamp(1.35rem, 2.1vw, 1.85rem);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.lead {
  margin: 0 0 clamp(1.5rem, 3vw, 2.25rem);
  max-width: 34rem;
  font-size: 0.9375rem;
  color: var(--mf-ink-muted);
}

/* ---------- figures ---------- */

.figure-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.figure {
  padding: clamp(0.6rem, 1.2vw, 0.8rem) 0 clamp(0.7rem, 1.4vw, 0.95rem);
  border-top: var(--mf-hairline) solid var(--mf-rule);
}

.figure:first-child {
  padding-top: 0.25rem;
  border-top: 0;
}

.figure-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.9rem;
  margin-bottom: 0.5rem;
}

.figure-heading {
  margin: 0;
  font-family: var(--mf-font-technical);
  font-size: var(--mf-type-label);
  font-weight: 400;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-ink-muted);
}

.figure-heading b {
  color: var(--mf-figure);
  font-weight: 400;
}

.figure-plain {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--mf-ink-muted);
}

.figure-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(232px, 272px);
  gap: 1.25rem;
  align-items: start;
}

.figure-diagram {
  min-width: 0;
}

.figure-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.figure-diagram .f-ink {
  fill: none;
  stroke: var(--mf-figure);
  stroke-width: 1.3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.figure-diagram .f-soft {
  fill: none;
  stroke: var(--mf-figure-soft);
  stroke-width: 1.3;
}

.figure-diagram .f-rule {
  fill: none;
  stroke: var(--mf-rule-strong);
  stroke-width: 1.1;
}

.figure-diagram .f-def {
  fill: none;
  stroke: var(--mf-deferred);
  stroke-width: 1.3;
}

.figure-diagram .f-fill {
  fill: var(--mf-figure);
  stroke: none;
}

.figure-diagram .f-tint {
  fill: var(--mf-figure);
  fill-opacity: 0.16;
  stroke: var(--mf-figure);
  stroke-width: 1.1;
}

.figure-diagram .f-lead {
  fill: none;
  stroke: var(--mf-figure);
  stroke-width: 1;
}

.figure-diagram .f-lead-dot {
  fill: var(--mf-figure);
}

.figure-diagram .fig-label {
  font-family: var(--mf-font-technical);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  fill: var(--mf-ink);
}

.figure-diagram .fig-label.num {
  fill: var(--mf-figure);
}

.figure-diagram .fig-label[data-tone='deferred'] {
  fill: var(--mf-deferred);
}

.plate {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  border-top: var(--mf-hairline) solid var(--mf-figure);
}

.plate caption {
  padding-bottom: 0.35rem;
  text-align: left;
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-ink-muted);
}

.plate caption .provenance {
  margin-top: 0.3rem;
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  text-transform: none;
}

.plate caption .provenance summary {
  font-size: 0.6875rem;
}

.plate caption .provenance ul {
  padding-left: 0.9rem;
}

.plate th,
.plate td {
  padding: 0.32rem 0.5rem 0.32rem 0;
  border-bottom: var(--mf-hairline) solid var(--mf-rule);
  text-align: left;
  vertical-align: top;
}

.plate tr:last-child th,
.plate tr:last-child td {
  border-bottom: 0;
  padding-bottom: 0;
}

.plate th {
  width: 4.25rem;
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-ink-muted);
}

.plate td {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--mf-ink);
}

.plate td[data-state] {
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-state);
}

/* ---------- status strip (narrow viewports) ---------- */

.status-strip {
  display: none;
  margin: 0 0 1.5rem;
  padding: 0.5rem 0;
  border-top: var(--mf-hairline) solid var(--mf-ink);
  border-bottom: var(--mf-hairline) solid var(--mf-rule);
  gap: 0.35rem 1rem;
  flex-wrap: wrap;
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-ink-muted);
}

.status-strip span[data-state] {
  color: var(--mf-state);
}

.status-strip .strip-readout {
  margin-left: auto;
  color: var(--mf-figure);
}

/* ---------- provenance ---------- */

.provenance {
  margin-top: 0.4rem;
  font-family: var(--mf-font-technical);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--mf-ink-muted);
}

.provenance summary {
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: var(--mf-track-technical);
  font-size: 0.6875rem;
}

.provenance summary::marker {
  color: var(--mf-figure);
}

.provenance ul {
  margin: 0.35rem 0 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.2rem;
}

.provenance a {
  color: var(--mf-ink-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.rubric {
  margin-top: 0.6rem;
  font-size: 0.75rem;
}

.rubric dl {
  margin: 0.35rem 0 0;
  display: grid;
  gap: 0.3rem;
}

.rubric dt {
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-state);
}

.rubric dd {
  margin: 0;
  color: var(--mf-ink-muted);
}

/* ---------- register ---------- */

.register {
  margin-top: clamp(1rem, 2vw, 1.5rem);
}

.section-title {
  margin: 0 0 0.6rem;
  padding-bottom: 0.4rem;
  border-bottom: var(--mf-hairline) solid var(--mf-ink);
  font-family: var(--mf-font-technical);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
}

.register-note {
  margin: 0 0 0.6rem;
  max-width: none;
  font-size: 0.8125rem;
  color: var(--mf-ink-muted);
}

.register-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.register-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 7rem;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: var(--mf-hairline) solid var(--mf-rule);
}

.register-name {
  font-size: 0.9375rem;
  text-decoration: line-through;
  text-decoration-color: var(--mf-deferred);
  text-decoration-thickness: 1px;
}

.index-name {
  font-size: 0.9375rem;
}

.register-state[data-plan='proposed']::after {
  content: ' · proposed';
  color: var(--mf-ink-muted);
  font-size: 0.6875rem;
}

.register-plain,
.register-reason {
  display: block;
  margin-top: 0.22rem;
  font-size: 0.8125rem;
  color: var(--mf-ink-muted);
}

.register-reason {
  font-family: var(--mf-font-technical);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.register-state {
  font-family: var(--mf-font-technical);
  font-size: var(--mf-type-label);
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-state, var(--mf-ink));
  text-align: right;
}

/* ---------- ledger ---------- */

.ledger {
  border-left: var(--mf-hairline) solid var(--mf-rule-strong);
  padding-left: clamp(0.75rem, 1.6vw, 1.25rem);
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
}

.ledger-label {
  margin: 0 0 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: var(--mf-hairline) solid var(--mf-rule);
  font-size: var(--mf-type-label);
  color: var(--mf-ink-muted);
  text-align: left;
}

.ledger-table caption {
  text-align: left;
}

.ledger-table th,
.ledger-table td {
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: left;
  padding: 0.24rem 0.3rem 0.24rem 0;
  border-bottom: var(--mf-hairline) solid var(--mf-rule);
  color: var(--mf-ink-muted);
  vertical-align: top;
}

.ledger-date {
  white-space: nowrap;
}

.ledger-table td:last-child {
  color: var(--mf-ink);
}

.readout {
  margin: 0;
  font-family: var(--mf-font-technical);
  font-size: clamp(2rem, 3.4vw, 2.75rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--mf-figure);
}

.readout-label {
  margin: 0.3rem 0 0;
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-ink-muted);
}

.key-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.38rem;
}

.key-item {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  font-size: 0.6875rem;
  color: var(--mf-ink-muted);
}

.key-item::before {
  content: '';
  width: 0.45rem;
  height: 0.45rem;
  background: var(--mf-state);
  flex: none;
}

.key-count {
  margin-left: auto;
  color: var(--mf-ink);
  font-variant-numeric: tabular-nums;
}

/* ---------- dock ---------- */

.dock {
  position: relative;
  bottom: 0;
  z-index: 5;
  margin: 0 calc(-1 * var(--sheet-pad));
  padding: 0.6rem var(--sheet-pad) 0.7rem;
  background: var(--mf-ground);
  border-top: 2px solid var(--mf-ink);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.4fr) auto;
  align-items: center;
  gap: clamp(0.6rem, 1.4vw, 1.1rem);
}

.dock-revision {
  margin: 0;
  font-size: 0.6875rem;
  color: var(--mf-ink-muted);
  line-height: 1.5;
}

.guide-form {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  border: var(--mf-hairline) solid var(--mf-rule-strong);
  padding: 0.4rem 0.55rem;
  background: var(--mf-ground-deep);
}

.guide-prompt {
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-ink-muted);
  white-space: nowrap;
}

.guide-form input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--mf-ink);
  font-family: var(--mf-font-text);
  font-size: 0.875rem;
  padding: 0.1rem 0;
}

.guide-form input:focus {
  outline: none;
}

.guide-form:focus-within {
  border-color: var(--mf-figure);
}

.guide-form button {
  border: 0;
  background: transparent;
  color: var(--mf-figure);
  font-family: var(--mf-font-technical);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0 0.1rem;
}

.guide-form .guide-stop {
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-deferred);
  border: 0;
  border-left: var(--mf-hairline) solid var(--mf-rule);
  padding: 0 0 0 0.45rem;
  margin-left: 0.2rem;
}

.dock-note {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.quiet-toggle {
  border: var(--mf-hairline) solid var(--mf-rule-strong);
  background: transparent;
  color: var(--mf-ink-muted);
  font-size: 0.6875rem;
  padding: 0.22rem 0.4rem;
  cursor: pointer;
}

.quiet-toggle[aria-pressed='true'] {
  background: var(--mf-ink);
  border-color: var(--mf-ink);
  color: var(--mf-ground);
}

.guide-mode {
  font-size: 0.6875rem;
  color: var(--mf-ink-muted);
  white-space: nowrap;
}

.guide-output {
  grid-column: 1 / -1;
  margin-top: 0.1rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  max-height: 5.5rem;
  overflow-y: auto;
}

.guide-output:empty {
  display: none;
}

.guide-nudge {
  margin: 0;
  padding-left: 0.55rem;
  border-left: 1px solid var(--mf-figure);
  color: var(--mf-ink-muted);
  grid-column: 1 / -1;
}

/* ---------- annotation ---------- */

[data-annotated='emphasize'] {
  background: linear-gradient(to right, rgba(16, 87, 154, 0.08), transparent 65%);
  box-shadow: inset 1px 0 0 var(--mf-figure);
  transition: background 220ms ease;
}

[data-annotated='dim'] {
  opacity: 0.4;
  transition: opacity 220ms ease;
}

[data-annotation-label]::after {
  content: attr(data-annotation-label);
  margin-left: 0.4rem;
  font-family: var(--mf-font-technical);
  font-size: 0.6875rem;
  letter-spacing: var(--mf-track-technical);
  text-transform: uppercase;
  color: var(--mf-figure);
}

[data-nod='true'] .figure-heading::after {
  content: '';
  display: inline-block;
  width: 0.3rem;
  height: 0.3rem;
  margin-left: 0.45rem;
  border-radius: 50%;
  background: var(--mf-figure);
  animation: nod 900ms ease 1;
}

@keyframes nod {
  0% {
    transform: scale(0.4);
    opacity: 0;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    opacity: 0.7;
  }
}

/* ---------- focus ---------- */

:focus-visible {
  outline: 2px solid var(--mf-figure);
  outline-offset: 2px;
}

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

@media (max-width: 980px) {
  .spread {
    grid-template-columns: minmax(0, 1fr);
  }

  .status-strip {
    display: flex;
  }

  .figure-body {
    grid-template-columns: minmax(0, 1fr);
  }

  .plate {
    margin-top: 0.25rem;
  }

  .ledger {
    border-left: 0;
    border-top: var(--mf-hairline) solid var(--mf-ink);
    padding-left: 0;
    padding-top: 1.25rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (max-width: 720px) {
  body {
    padding: 0;
  }

  .sheet {
    --sheet-pad: 1rem;
    border: 0;
    padding: 0.9rem var(--sheet-pad) 0;
  }

  .masthead {
    flex-wrap: wrap;
    gap: 0.45rem;
  }

  .doc-id {
    margin-left: 0;
    width: 100%;
  }

  .register-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .register-state {
    text-align: left;
  }

  .ledger {
    grid-template-columns: minmax(0, 1fr);
  }

  .dock {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.45rem;
  }

  .dock-revision {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

@media (min-width: 981px) {
  .dock.is-stuck {
    position: sticky;
    bottom: 0;
  }
}

@media (max-width: 980px) {
  .dock {
    margin-top: 1.5rem;
  }

  #guide {
    scroll-margin-top: 1rem;
  }
}