/* mcp-replay — surveyor's field-book landing (Vol. II)
 * Paired with PlatAtlas Vol. I. Spectral + IBM Plex Mono.
 * Cooler paper than Vol. I, ruled-notebook background.
 * In/Out direction colors carry structural meaning (ink = client→server, highway = server→client).
 * Scoped under .landing so it never bleeds into the renderer view. */

.landing {
  /* Suppress the old dotted-grid radial-gradient that replay.css :49
   * still paints on the .landing wrapper. The new design's bg lives
   * on body.landing-mode (ruled-notebook lines); this wrapper stays
   * transparent. */
  background-image: none;
  background-attachment: initial;

  /* paper — slightly cooler than PlatAtlas Vol. I */
  --paper:      #e8e0c9;
  --paper-2:    #ddd1b3;
  --paper-3:    #c8b994;
  --paper-deep: #a89668;

  --ink:       #14110c;
  --ink-2:     #423a30;
  --ink-faint: #847865;

  --rule:      #b9aa86;
  --rule-soft: #cebd96;
  --rule-deep: #98875f;

  --highway:      #b14a3a;
  --highway-deep: #8c3a2c;
  --highway-tint: rgba(177, 74, 58, 0.10);

  --dir-in:    #14110c;
  --dir-out:   #b14a3a;
  --dir-err:   #5d3839;

  --live:      #b14a3a;
  --forest:    #5a6e4a;

  --font-serif: "Spectral", "Iowan Old Style", "Georgia", serif;
  --font-mono:  "IBM Plex Mono", "SF Mono", ui-monospace, "Menlo", monospace;

  font-family: var(--font-serif);
  color: var(--ink);
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
}

body.landing-mode {
  margin: 0;
  background: #e8e0c9;
  /* ruled-notebook horizontal lines, single layer at a more confident
   * spacing (28px → matches Spectral body line-height at 18px font). */
  background-image:
    repeating-linear-gradient(180deg, transparent 0, transparent 27px, rgba(20,17,12,0.035) 28px);
  background-attachment: fixed;
}

.landing *, .landing *::before, .landing *::after { box-sizing: border-box; }
.landing a { color: inherit; text-decoration: none; }
.landing code, .landing kbd, .landing pre { font-family: var(--font-mono); font-size: 0.88em; }

.landing .wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.landing .mono { font-family: var(--font-mono); }
.landing .italic { font-style: italic; }

/* ───── Masthead ───── */
.landing .masthead {
  position: sticky; top: 0; z-index: 30;
  background: var(--paper);
  border-bottom: 1px solid var(--rule-deep);
}
.landing .masthead-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 60px;
  gap: 24px;
}
.landing .brand { display: flex; align-items: baseline; gap: 12px; color: var(--ink); }
.landing .brand-mark { width: 26px; height: 26px; align-self: center; }
.landing .brand-name { font-family: var(--font-serif); font-weight: 600; font-size: 17px; letter-spacing: -0.005em; }
.landing .brand-vol {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint);
  text-transform: uppercase; letter-spacing: 0.12em;
}
.landing .brand-pair {
  font-family: var(--font-serif); font-style: italic; font-size: 13px;
  color: var(--ink-faint); margin-left: 6px;
}
.landing .brand-pair a { color: var(--highway-deep); border-bottom: 1px dotted var(--highway-deep); }
.landing .masthead nav { display: flex; justify-content: center; gap: 30px; font-size: 13.5px; }
.landing .masthead nav a { color: var(--ink-2); position: relative; }
.landing .masthead nav a:hover { color: var(--ink); }
.landing .masthead nav a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -3px; height: 1px;
  background: var(--highway); transform: scaleX(0); transform-origin: left;
  transition: transform 180ms ease;
}
.landing .masthead nav a:hover::after { transform: scaleX(1); }
.landing .masthead .actions { display: flex; align-items: center; gap: 14px; }
.landing .masthead .recording {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.16em;
  border-left: 1px solid var(--rule);
  padding-left: 14px;
}
.landing .recording .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 3px rgba(177,74,58,0.18);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(177,74,58,0.18); }
  50%      { box-shadow: 0 0 0 7px rgba(177,74,58,0.04); }
}
.landing .masthead .open-link {
  background: var(--ink); color: var(--paper);
  padding: 8px 16px; border-radius: 1px;
  font-family: var(--font-serif); font-weight: 500; font-size: 13px;
  letter-spacing: 0.02em;
}
.landing .masthead .open-link:hover { background: var(--highway-deep); }

/* ───── Frontispiece ───── */
.landing .frontispiece { padding: 48px 0 64px; position: relative; }
.landing .front-grid {
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: 52px; align-items: stretch;
}
.landing .pub-line {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 24px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.16em;
}
.landing .pub-line .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--ink-faint); }
.landing .pub-line .live-tag {
  color: var(--highway-deep); display: inline-flex; align-items: center; gap: 7px;
}
.landing .pub-line .live-tag .pulse {
  width: 7px; height: 7px; border-radius: 50%; background: var(--live);
  animation: pulse 1.6s ease-in-out infinite;
}

.landing h1.front-title {
  font-family: var(--font-serif);
  font-size: clamp(48px, 6.4vw, 84px);
  line-height: 0.98; letter-spacing: -0.025em;
  font-weight: 600; margin: 0 0 22px; color: var(--ink);
}
.landing h1.front-title .swash { font-style: italic; font-weight: 500; color: var(--highway-deep); }
.landing .front-deck {
  font-family: var(--font-serif); font-size: 20px;
  line-height: 1.5; color: var(--ink-2);
  max-width: 40ch; margin: 0 0 22px; font-weight: 400;
}
.landing .front-deck code {
  background: transparent; border-bottom: 1px solid var(--rule-deep); padding: 0 2px;
}
.landing .front-deck strong { font-weight: 600; color: var(--ink); }

.landing .front-meta {
  display: grid; grid-template-columns: auto auto auto;
  margin: 24px 0 26px;
  border-top: 1px solid var(--rule-deep);
  border-bottom: 1px solid var(--rule-deep);
}
.landing .front-meta > div {
  padding: 12px 22px 12px 0;
  border-right: 1px dotted var(--rule-deep);
}
.landing .front-meta > div:last-child { border-right: none; }
.landing .front-meta > div + div { padding-left: 22px; }
.landing .front-meta dt {
  font-family: var(--font-mono); font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--ink-faint); margin: 0 0 3px;
}
.landing .front-meta dd {
  margin: 0; font-family: var(--font-serif);
  font-size: 15px; font-weight: 500; color: var(--ink);
}
.landing .front-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.landing .btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px;
  font-family: var(--font-serif); font-size: 14.5px; font-weight: 500;
  text-decoration: none; border: 1px solid var(--ink);
  background: transparent; color: var(--ink); border-radius: 1px; cursor: pointer;
  transition: background 100ms, color 100ms;
}
.landing .btn:hover { background: var(--ink); color: var(--paper); }
.landing .btn-primary { background: var(--ink); color: var(--paper); }
.landing .btn-primary:hover { background: var(--highway-deep); border-color: var(--highway-deep); }
.landing .front-tip {
  font-family: var(--font-serif); font-style: italic;
  font-size: 13.5px; color: var(--ink-faint);
  margin-top: 20px; max-width: 42ch;
}

/* field-book frame */
.landing .fieldbook-frame {
  position: relative; background: var(--paper);
  border: 1px solid var(--rule-deep);
  box-shadow: 24px 24px 60px -40px rgba(40,30,15,0.4);
  padding: 24px 26px 22px;
  aspect-ratio: 5/6.3;
  display: flex; flex-direction: column;
}
.landing .fieldbook-frame::before {
  /* ruled lines inside the leaf — lighter than the page bg's lines */
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(180deg,
    transparent 0, transparent 21px, rgba(20,17,12,0.04) 22px);
  pointer-events: none;
}
.landing .fieldbook-frame::after {
  /* notebook binding margin — sits in the inner padding gutter,
   * doesn't intersect the SVG bearings-table columns */
  content: '';
  position: absolute; left: 18px; top: 0; bottom: 0; width: 1px;
  background: var(--highway);
  opacity: 0.45;
  pointer-events: none;
}
.landing .fieldbook-cap {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 8px;
  margin-bottom: 14px;
  position: relative; z-index: 1;
}
.landing .fieldbook-cap .left {
  font-family: var(--font-serif); font-style: italic; font-size: 13px; color: var(--ink-2);
}
.landing .fieldbook-cap .left strong {
  display: block; font-style: normal; font-family: var(--font-mono);
  font-size: 9.5px; color: var(--ink-faint);
  text-transform: uppercase; letter-spacing: 0.18em; margin-bottom: 2px;
}
.landing .fieldbook-cap .right {
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.14em;
  text-align: right;
}
.landing .fieldbook-canvas { flex: 1; position: relative; z-index: 1; overflow: hidden; }
.landing .fieldbook-canvas svg { width: 100%; height: 100%; display: block; }

/* ───── Section ───── */
.landing section.s { padding: 80px 0; position: relative; }
.landing section.s.s-paper-2 { background: var(--paper-2); }
.landing section.s.s-ink { background: var(--ink); color: var(--paper); }
.landing .section-head {
  display: grid; grid-template-columns: auto 1fr;
  gap: 24px; align-items: baseline;
  border-top: 1px solid var(--rule-deep);
  padding-top: 22px; margin-bottom: 44px;
}
.landing .section-num {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.18em;
  white-space: nowrap; padding-top: 6px;
}
.landing h2.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.4vw, 52px);
  line-height: 1.04; letter-spacing: -0.02em;
  font-weight: 600; margin: 0 0 14px;
  max-width: 26ch;
}
.landing h2.section-title .swash { font-style: italic; color: var(--highway-deep); font-weight: 500; }
.landing .section-lede {
  font-family: var(--font-serif); font-size: 18px;
  color: var(--ink-2); max-width: 64ch; line-height: 1.55; margin: 0;
}

/* ───── Pipeline (how it records) ───── */
.landing .pipeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0; margin-top: 32px;
  align-items: stretch;
}
.landing .pipe-card {
  background: var(--paper);
  border: 1px solid var(--rule-deep);
  padding: 26px 24px;
  position: relative;
}
.landing .pipe-card.featured {
  background: var(--paper);
  border-color: var(--highway);
  box-shadow: inset 0 -3px 0 var(--highway);
}
.landing .pipe-card.featured .pipe-id { color: var(--highway-deep); }
.landing .pipe-card .pipe-id {
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--ink-faint); margin-bottom: 12px;
}
.landing .pipe-card h3 {
  font-family: var(--font-serif); font-size: 21px;
  letter-spacing: -0.01em; font-weight: 600;
  margin: 0 0 4px;
}
.landing .pipe-card .role {
  font-style: italic; font-size: 14px; color: var(--highway-deep);
  margin-bottom: 12px;
}
.landing .pipe-card p {
  font-size: 14px; color: var(--ink-2); line-height: 1.5; margin: 0;
}
.landing .pipe-card .pipe-symbol {
  margin-top: 16px; padding-top: 14px;
  border-top: 1px dashed var(--rule-deep);
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); letter-spacing: 0.04em;
  line-height: 1.55;
}
.landing .pipe-arrow {
  display: flex; align-items: center; justify-content: center;
  padding: 0 8px; position: relative;
  font-family: var(--font-mono); font-size: 22px;
  color: var(--highway);
}
.landing .pipe-arrow .lbl {
  position: absolute; transform: translateY(-22px);
  font-size: 9px; color: var(--ink-faint);
  letter-spacing: 0.16em; text-transform: uppercase;
}
.landing .pipeline-callout {
  margin-top: 32px;
  background: var(--paper); border: 1px solid var(--rule-deep);
  border-left: 4px solid var(--highway);
  padding: 18px 24px;
  font-family: var(--font-serif); font-style: italic; font-size: 16px;
  color: var(--ink-2); line-height: 1.55;
}
.landing .pipeline-callout strong { color: var(--ink); font-style: normal; }

/* ───── Plates ───── */
.landing .plates-frame {
  display: grid; grid-template-columns: 260px 1fr;
  gap: 28px; margin-top: 36px;
  border-top: 1px solid var(--rule-deep);
}
.landing .plates-nav { border-right: 1px solid var(--rule-deep); }
.landing .plate-tab {
  display: grid; grid-template-columns: auto 1fr;
  gap: 14px; align-items: start;
  padding: 16px 20px 16px 0;
  cursor: pointer; width: 100%;
  background: transparent; border: none;
  border-bottom: 1px solid var(--rule-soft);
  text-align: left; font-family: var(--font-serif); color: var(--ink);
}
.landing .plate-tab:last-child { border-bottom: none; }
.landing .plate-tab:hover { background: var(--paper-2); }
.landing .plate-tab.active {
  background: var(--paper-2);
  box-shadow: inset 3px 0 0 var(--highway);
  padding-left: 12px;
}
.landing .plate-num {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-faint); letter-spacing: 0.12em; padding-top: 3px;
}
.landing .plate-tab.active .plate-num { color: var(--highway-deep); }
.landing .plate-info .plate-name {
  font-size: 16px; font-weight: 600;
  letter-spacing: -0.01em; margin: 0 0 2px;
}
.landing .plate-info .plate-sub {
  font-family: var(--font-serif); font-style: italic;
  font-size: 12.5px; color: var(--ink-faint); margin: 0 0 6px;
}
.landing .plate-info .plate-desc {
  font-size: 13px; color: var(--ink-2); line-height: 1.45;
}
.landing .plates-stage {
  background: var(--paper); border: 1px solid var(--rule-deep);
  padding: 22px 26px 26px; min-height: 500px; position: relative;
}
.landing .plate-caption {
  display: flex; align-items: baseline; justify-content: space-between;
  border-bottom: 1px solid var(--rule); padding-bottom: 10px; margin-bottom: 18px;
  gap: 16px;
}
.landing .plate-caption .cap-num,
.landing .plate-caption .cap-right {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.18em;
}
.landing .plate-caption .cap-title {
  font-family: var(--font-serif); font-weight: 600; font-size: 17px;
}
.landing .plate-caption .cap-italic {
  font-style: italic; font-weight: 400; color: var(--ink-faint);
}
.landing .plate-panel { display: none; }
.landing .plate-panel.active { display: block; animation: fadein 280ms ease; }
@keyframes fadein {
  from { opacity: 0; transform: translateY(3px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Plate I · Itinerary */
.landing .itin-filters {
  display: flex; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; align-items: center;
}
.landing .pill {
  font-family: var(--font-mono); font-size: 10px;
  padding: 3px 12px;
  border: 1px solid var(--rule-deep);
  color: var(--ink-2);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: transparent;
}
.landing .pill.active { color: var(--paper); background: var(--ink); }
.landing .itin-search {
  margin-left: auto; min-width: 240px;
  border: 1px solid var(--rule-deep);
  background: var(--paper-2);
  padding: 4px 10px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-faint); letter-spacing: 0.04em;
}
.landing .itin-tally {
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.14em;
}
.landing .itin-table {
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
}
.landing .itin-header {
  display: grid; grid-template-columns: 130px 60px 1fr 70px; gap: 12px;
  padding: 8px 0; border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono); font-size: 9.5px;
  color: var(--ink-faint); letter-spacing: 0.14em; text-transform: uppercase;
}
.landing .itin-header span:last-child { text-align: right; }
.landing .itin-row {
  display: grid; grid-template-columns: 130px 60px 1fr 70px;
  gap: 12px; padding: 7px 0;
  border-bottom: 1px dotted var(--rule);
  font-family: var(--font-mono); font-size: 11.5px;
}
.landing .itin-row.err { background: rgba(177,74,58,0.04); }
.landing .itin-ts { color: var(--ink-faint); letter-spacing: 0.04em; }
.landing .itin-dir { font-weight: 600; letter-spacing: 0.08em; }
.landing .itin-dir.in  { color: var(--dir-in); }
.landing .itin-dir.out { color: var(--dir-out); }
.landing .itin-dir.err { color: var(--dir-err); }
.landing .itin-body { color: var(--ink); }
.landing .itin-body.err { color: var(--dir-err); font-style: italic; }
.landing .itin-method { font-weight: 500; }
.landing .itin-meta { margin-left: 12px; color: var(--ink-faint); font-family: var(--font-serif); font-style: italic; }
.landing .itin-frame {
  text-align: right; color: var(--ink-faint); letter-spacing: 0.06em;
}
.landing .itin-foot {
  display: flex; justify-content: space-between;
  margin-top: 12px;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.14em;
}

/* Plate II · Instruments */
.landing .instr-head {
  display: flex; gap: 18px; align-items: baseline;
  margin-bottom: 16px; flex-wrap: wrap;
}
.landing .instr-summary {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); letter-spacing: 0.16em;
}
.landing .instr-sort {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.14em;
}
.landing .instr-table {
  width: 100%; border-collapse: collapse;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
}
.landing .instr-table th {
  padding: 10px 12px;
  font-family: var(--font-mono); font-size: 9.5px;
  color: var(--ink-faint); letter-spacing: 0.14em;
  border-bottom: 1px solid var(--rule); font-weight: 500;
  text-align: left;
}
.landing .instr-table th.num,
.landing .instr-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.landing .instr-table td {
  padding: 12px;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--ink);
}
.landing .instr-table tr:nth-child(even) { background: var(--paper-2); }
.landing .instr-name .dot { color: var(--dir-out); margin-right: 8px; }
.landing .instr-profile {
  display: flex; align-items: center; gap: 6px;
}
.landing .instr-bar {
  height: 10px;
  background: var(--highway);
}
.landing .instr-bar.err { background: var(--dir-err); }
.landing .instr-pct {
  font-family: var(--font-mono); font-size: 9.5px;
  color: var(--ink-faint); letter-spacing: 0.06em;
}
.landing .instr-reading {
  margin-top: 18px; padding: 14px 18px;
  background: var(--paper-2); border: 1px solid var(--rule-deep);
  font-family: var(--font-serif); font-style: italic; font-size: 13.5px;
  color: var(--ink-2); line-height: 1.55;
}
.landing .instr-reading strong {
  font-style: normal; color: var(--ink); font-family: var(--font-mono);
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.16em;
}

/* Plate III · Shot List */
.landing .shot-head {
  display: flex; align-items: baseline; gap: 16px; margin-bottom: 16px;
}
.landing .shot-summary {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); letter-spacing: 0.16em;
}
.landing .shots { display: grid; gap: 14px; }
.landing .shot {
  border: 1px solid var(--rule-deep);
  background: var(--paper-2);
  display: grid; grid-template-columns: 80px 1fr 1fr;
}
.landing .shot-spine {
  padding: 14px 12px;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  gap: 6px;
  background: var(--ink); color: var(--paper);
}
.landing .shot.err .shot-spine { background: var(--dir-err); }
.landing .shot-spine-label {
  font-family: var(--font-mono); font-size: 9;
  color: var(--paper-3); letter-spacing: 0.18em;
}
.landing .shot-spine-id {
  font-family: var(--font-serif); font-size: 26px;
  font-weight: 600; letter-spacing: -0.02em;
}
.landing .shot-spine-dur {
  font-family: var(--font-mono); font-size: 9;
  color: var(--paper-3); letter-spacing: 0.1em;
}
.landing .shot-req, .landing .shot-res { padding: 14px 16px; }
.landing .shot-req { border-right: 1px dashed var(--rule-deep); }
.landing .shot-dir-row {
  display: flex; align-items: baseline; gap: 6px; margin-bottom: 6px;
}
.landing .shot-dir-row .arrow { color: var(--dir-in); }
.landing .shot-res .arrow { color: var(--dir-out); }
.landing .shot.err .shot-res .arrow { color: var(--dir-err); }
.landing .shot-dir-row .label {
  font-family: var(--font-mono); font-size: 9.5px;
  color: var(--ink-faint); letter-spacing: 0.16em;
}
.landing .shot-res .label { color: var(--highway-deep); }
.landing .shot.err .shot-res .label { color: var(--dir-err); }
.landing .shot-method {
  font-family: var(--font-mono); font-size: 12;
  color: var(--ink); font-weight: 600; margin-bottom: 4px;
}
.landing .shot-method .tool { color: var(--highway-deep); }
.landing .shot pre {
  margin: 0;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-2); white-space: pre-wrap; line-height: 1.5;
  background: transparent;
}
.landing .shot.err .shot-res pre {
  color: var(--dir-err); font-style: italic;
}

/* Plate IV · Field Notes */
.landing .fn-head {
  display: flex; align-items: baseline; gap: 14px; margin-bottom: 14px;
}
.landing .fn-summary {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); letter-spacing: 0.16em;
}
.landing .fn-file {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.14em;
}
.landing .fn-block {
  background: var(--ink); color: var(--paper-2);
  padding: 18px 0;
  font-family: var(--font-mono); font-size: 11.5px;
  line-height: 1.65;
}
.landing .fn-line {
  display: grid; grid-template-columns: 46px 1fr;
  padding: 0 18px;
}
.landing .fn-line:nth-child(even) { background: rgba(255,255,255,0.025); }
.landing .fn-num {
  color: rgba(232,224,201,0.3); text-align: right;
  padding-right: 14px;
  border-right: 1px solid rgba(232,224,201,0.1);
  margin-right: 14px;
}
.landing .fn-content { white-space: pre; }
.landing .fn-content.in   { color: #eee1c1; }
.landing .fn-content.out  { color: #f0a899; }
.landing .fn-content.err  { color: #d97a73; }
.landing .fn-content.meta { color: rgba(232,224,201,0.55); }
.landing .fn-foot {
  margin-top: 10px; font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.14em;
  display: flex; justify-content: space-between;
}
.landing .fn-foot a {
  color: var(--highway-deep); border-bottom: 1px solid var(--highway);
}

/* Plate V · Discrepancy */
.landing .disc-head {
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 14px; flex-wrap: wrap;
}
.landing .disc-summary {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); letter-spacing: 0.16em;
}
.landing .disc-counts {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.14em;
}
.landing .disc-table {
  display: grid; grid-template-columns: 1fr 30px 1fr;
  border: 1px solid var(--rule-deep);
}
.landing .disc-table .head {
  padding: 10px 14px; background: var(--paper-2);
  font-family: var(--font-mono); font-size: 9.5px;
  color: var(--ink-faint); letter-spacing: 0.18em;
  border-bottom: 1px solid var(--rule-deep);
}
.landing .disc-table .head.mid {
  padding: 10px 6px; letter-spacing: 0.16em; text-align: center;
}
.landing .disc-row {
  padding: 10px 14px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--ink);
}
.landing .disc-row.removed,
.landing .disc-row.empty { color: var(--ink-faint); font-style: italic; }
.landing .disc-row.changed { background: rgba(177,74,58,0.06); }
.landing .disc-row.added { background: rgba(74,124,89,0.06); }
.landing .disc-row.removed { background: rgba(93,56,57,0.06); }
.landing .disc-mark {
  padding: 10px 6px;
  font-family: 'IBM Plex Mono'; font-size: 14px;
  font-weight: 600;
  text-align: center; align-self: center;
}
.landing .disc-mark.same { color: var(--ink-faint); }
.landing .disc-mark.changed { color: var(--highway); background: rgba(177,74,58,0.06); }
.landing .disc-mark.added { color: var(--forest); background: rgba(74,124,89,0.06); }
.landing .disc-mark.removed { color: var(--dir-err); background: rgba(93,56,57,0.06); }
.landing .disc-dur {
  margin-left: 10px; color: var(--ink-faint); font-size: 10px;
}
.landing .disc-help {
  margin-top: 14px; padding: 12px 16px;
  background: var(--paper-2); border: 1px solid var(--rule-deep);
  font-family: var(--font-serif); font-style: italic; font-size: 13.5px;
  color: var(--ink-2); line-height: 1.55;
}
.landing .disc-help strong {
  font-style: normal; color: var(--ink); font-family: var(--font-mono);
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.16em;
}

/* ───── 5-step Recipe ───── */
.landing .recipe {
  display: grid; grid-template-columns: repeat(5, 1fr);
  margin-top: 30px;
  border-top: 1px solid var(--rule-deep);
  border-bottom: 1px solid var(--rule-deep);
}
.landing .recipe-step {
  padding: 22px 22px 26px;
  border-right: 1px dotted var(--rule-deep);
  position: relative;
}
.landing .recipe-step:last-child { border-right: none; }
.landing .recipe-step .step-n {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); letter-spacing: 0.18em;
  text-transform: uppercase; margin-bottom: 12px;
}
.landing .recipe-step .step-n strong { color: var(--highway-deep); font-weight: 600; }
.landing .recipe-step h3 {
  font-family: var(--font-serif); font-size: 15px; font-weight: 600;
  letter-spacing: -0.005em; margin: 0 0 10px;
}
.landing .recipe-step .cmd {
  display: inline-block; background: var(--ink); color: #eee1c1;
  padding: 3px 8px; font-size: 11px;
  margin-bottom: 10px;
}
.landing .recipe-step .cmd-ghost {
  background: transparent; color: var(--ink-faint);
  font-style: italic; padding: 0;
}
.landing .recipe-step p { margin: 0; font-size: 13px; color: var(--ink-2); line-height: 1.5; }

/* ───── Live mode callout ───── */
.landing .live-callout {
  margin-top: 40px;
  background: var(--ink); color: var(--paper);
  border: 1px solid var(--ink);
  padding: 32px 36px;
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 36px;
  align-items: center;
}
.landing .live-callout .lc-tag {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--paper-3); letter-spacing: 0.18em;
  margin-bottom: 12px; display: inline-flex; gap: 8px; align-items: center;
}
.landing .live-callout .lc-tag .pulse {
  width: 7px; height: 7px; border-radius: 50%; background: var(--live);
  animation: pulse 1.6s ease-in-out infinite;
}
.landing .live-callout h3 {
  font-family: var(--font-serif); font-size: 28px;
  letter-spacing: -0.015em; font-weight: 600; margin: 0 0 12px;
}
.landing .live-callout h3 .swash { font-style: italic; color: var(--paper-3); }
.landing .live-callout p {
  font-size: 15px; line-height: 1.55; color: rgba(232,224,201,0.75);
  margin: 0 0 14px;
}
.landing .live-callout pre {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(232,224,201,0.18);
  padding: 14px 16px; margin: 0;
  font-size: 11.5px; line-height: 1.65;
  color: var(--paper-3); overflow-x: auto;
}
.landing .live-callout .hi { color: var(--paper-3); }
.landing .live-callout .lc-note {
  font-family: var(--font-mono); font-size: 10.5px;
  color: rgba(232,224,201,0.5); margin-top: 12px;
  letter-spacing: 0.06em;
}

/* ───── Spec table ───── */
.landing .spec-table {
  margin-top: 30px; width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border: 1px solid var(--rule-deep);
}
.landing .spec-table th {
  text-align: left; padding: 12px 16px;
  background: var(--paper-2);
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-2); letter-spacing: 0.14em;
  text-transform: uppercase; font-weight: 500;
  border-bottom: 1px solid var(--rule-deep);
}
.landing .spec-table td {
  padding: 12px 16px; vertical-align: top;
  border-bottom: 1px solid var(--rule);
  font-size: 13.5px;
}
.landing .spec-table tr:last-child td { border-bottom: none; }
.landing .spec-table td.line-type {
  font-family: var(--font-mono); font-weight: 500; color: var(--highway-deep);
  white-space: nowrap; width: 130px;
}
.landing .spec-table td.req {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-faint); letter-spacing: 0.1em;
  text-transform: uppercase; width: 110px;
}
.landing .spec-notes {
  margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap;
  font-family: var(--font-serif); font-size: 14px; color: var(--ink-2);
}
.landing .spec-notes strong { color: var(--ink); }
.landing .spec-link {
  margin-top: 18px; text-align: right;
}
.landing .spec-link a {
  font-family: var(--font-mono); font-size: 11.5px;
  color: var(--highway-deep); border-bottom: 1px solid var(--highway);
  padding-bottom: 2px; letter-spacing: 0.1em; text-transform: uppercase;
}

/* ───── Colophon ───── */
.landing .colophon {
  background: var(--paper-2);
  border-top: 1px solid var(--rule-deep);
  border-bottom: 1px solid var(--rule-deep);
  padding: 56px 0 32px;
}
.landing .colophon-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
}
.landing .colophon h4 {
  font-family: var(--font-mono); font-size: 10.5px;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--ink-faint); margin: 0 0 14px; font-weight: 500;
}
.landing .colophon ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.landing .colophon a { font-size: 14px; color: var(--ink); }
.landing .colophon a:hover { color: var(--highway-deep); }
.landing .colophon .arrow { color: var(--ink-faint); font-size: 10px; margin-left: 4px; }
.landing .colophon-blurb {
  font-size: 14.5px; color: var(--ink-2); line-height: 1.55;
  max-width: 38ch; margin: 0; font-style: italic;
}
.landing .colophon-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.landing .colophon-brand-name { font-family: var(--font-serif); font-weight: 600; font-size: 17px; }
.landing .colophon-brand-vol {
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.16em;
}
.landing .pair-card {
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--rule-deep);
  border-left: 3px solid var(--highway);
  display: flex; align-items: center; gap: 14px;
}
.landing .pair-card .pc-mark {
  width: 44px; height: 44px; flex-shrink: 0;
  border: 1px solid var(--rule-deep);
  display: flex; align-items: center; justify-content: center;
}
.landing .pair-card .pc-text {
  flex: 1; font-size: 13.5px; color: var(--ink-2); line-height: 1.4;
}
.landing .pair-card .pc-text strong {
  display: block; font-family: var(--font-serif); font-weight: 600;
  color: var(--ink); font-size: 14.5px; margin-bottom: 2px;
}
.landing .pair-card .pc-link {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--highway-deep); border-bottom: 1px solid var(--highway);
  padding-bottom: 1px; letter-spacing: 0.06em; text-transform: uppercase;
}
.landing .scale-bar-wrap {
  margin-top: 48px; padding-top: 22px;
  border-top: 1px solid var(--rule-deep);
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 24px; align-items: center;
}
.landing .scale-bar { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.landing .scale-bar .bar-title {
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.18em;
}
.landing .scale-bar-track { display: flex; height: 14px; border: 1px solid var(--ink); }
.landing .scale-bar-track div {
  width: 56px; height: 100%;
  border-right: 1px solid var(--ink);
}
.landing .scale-bar-track div:nth-child(odd) { background: var(--ink); }
.landing .scale-bar-track div:last-child { border-right: none; }
.landing .scale-bar-labels {
  display: flex; width: 280px;
  font-family: var(--font-mono); font-size: 10px;
  color: var(--ink-faint); justify-content: space-between; padding: 0 2px;
}
.landing .colophon-meta {
  text-align: center;
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.16em;
  line-height: 1.8;
}
.landing .colophon-meta strong { font-weight: 500; color: var(--ink-2); }
.landing .colophon-meta.left { text-align: left; }
.landing .colophon-meta.right { text-align: right; }
.landing .foot-final {
  background: var(--paper); padding: 16px 0;
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.16em;
}
.landing .foot-final-inner {
  display: flex; justify-content: space-between; gap: 24px; align-items: center;
}

/* instrument flourish (bottom-right) */
.landing .instrument-fixed {
  position: fixed; bottom: 22px; right: 22px;
  width: 52px; height: 52px; z-index: 20;
  pointer-events: none; color: var(--ink); opacity: 0.55;
  transition: opacity 200ms;
}

/* responsive */
@media (max-width: 960px) {
  .landing .front-grid { grid-template-columns: 1fr; gap: 40px; }
  .landing .pipeline { grid-template-columns: 1fr; gap: 8px; }
  .landing .pipe-arrow { transform: rotate(90deg); height: 36px; }
  .landing .plates-frame { grid-template-columns: 1fr; }
  .landing .plates-nav { border-right: none; border-bottom: 1px solid var(--rule-deep); }
  .landing .recipe { grid-template-columns: 1fr; }
  .landing .recipe-step { border-right: none; border-bottom: 1px dotted var(--rule-deep); }
  .landing .live-callout { grid-template-columns: 1fr; padding: 26px 24px; }
  .landing .colophon-grid { grid-template-columns: 1fr 1fr; }
  .landing .masthead nav { display: none; }
  .landing .scale-bar-wrap { grid-template-columns: 1fr; gap: 16px; }
  .landing .instrument-fixed { display: none; }
}