/* ══════════════════════════════════════════════════════════════════════
   leaseboard.xyz — house sheet
   register: auction-house board × settlement terminal
   ══════════════════════════════════════════════════════════════════════ */

:root {
  --ink:        #070a0c;
  --ink-panel:  #0d1216;
  --ink-flap:   #141b21;
  --ink-raised: #182027;

  --rule:       #26333c;
  --rule-soft:  #18222a;

  --paper:      #e6e0d1;
  --paper-mid:  #b3ac9c;
  --paper-dim:  #7d8580;

  --brass:      #c2933a;
  --brass-lit:  #e6c374;
  --brass-deep: #7c5c1e;

  --verdigris:  #4e8f7d;
  --oxide:      #a8563a;

  --serif: "Hoefler Text", "Baskerville", "Baskerville Old Face",
           "Palatino Linotype", Palatino, "Book Antiqua", "Liberation Serif",
           Georgia, serif;
  --mono: "SFMono-Regular", "IBM Plex Mono", "Roboto Mono", Menlo, Consolas,
          "DejaVu Sans Mono", "Liberation Mono", monospace;

  --gut: clamp(18px, 4vw, 56px);
  --maxw: 1180px;
}

* { box-sizing: border-box; }

html {
  background: var(--ink);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(120% 70% at 50% -10%, #101820 0%, rgba(7,10,12,0) 62%),
    var(--ink);
  color: var(--paper-mid);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.62;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* ── generic ─────────────────────────────────────────────────────────── */

a { color: var(--brass-lit); text-decoration: none; }
a:hover { color: var(--paper); }
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--brass-lit);
  outline-offset: 3px;
}

h1, h2, h3, h4 { color: var(--paper); font-weight: 400; margin: 0; }
p { margin: 0 0 1.05em; }
strong { color: var(--paper); font-weight: 600; }
em { color: var(--paper); font-style: italic; }

code, .num, .mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

hr.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gut);
}

.stamp {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--paper-dim);
}

.brass { color: var(--brass-lit); }

/* ── masthead: the board header rail ─────────────────────────────────── */

.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(180deg, #0a0e11 0%, #080b0e 100%);
  border-bottom: 1px solid var(--rule);
  box-shadow: 0 1px 0 rgba(194,147,58,.16);
}

.masthead-in {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 22px;
}

.house {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--paper);
  flex: 0 0 auto;
}
.house svg { display: block; width: 22px; height: 22px; }
.house-name {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--paper);
}

.board-nav {
  margin-left: auto;
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}
.board-nav a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--paper-dim);
  padding: 8px 13px;
  border-left: 1px solid var(--rule-soft);
  display: flex;
  align-items: center;
  gap: 7px;
  line-height: 1.1;
}
.board-nav a:last-child { border-right: 1px solid var(--rule-soft); }
.board-nav a .lot { color: #8a6a24; }
.board-nav a:hover { color: var(--paper); background: rgba(194,147,58,.05); }
.board-nav a[aria-current="page"] { color: var(--brass-lit); }
.board-nav a[aria-current="page"] .lot { color: var(--brass); }

@media (max-width: 780px) {
  .masthead-in { min-height: 54px; padding-block: 8px; flex-wrap: wrap; gap: 8px; }
  .board-nav { margin-left: 0; width: 100%; }
  .board-nav a { padding: 7px 9px; font-size: 10px; letter-spacing: .12em; flex: 1 1 auto; justify-content: center; }
  .board-nav a:first-child { border-left: 0; }
  .board-nav a:last-child { border-right: 0; }
}

/* ── hero ────────────────────────────────────────────────────────────── */

.hero { position: relative; border-bottom: 1px solid var(--rule); }

.hero-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(34px, 6vw, 76px) var(--gut) clamp(26px, 4vw, 48px);
}
.hero-cols {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
}
.hero-cols > * { min-width: 0; }
@media (max-width: 900px) { .hero-cols { grid-template-columns: 1fr; align-items: start; } }

.hero-plate {
  border-top: 1px solid var(--rule);
  padding-top: 4px;
}
.hero-plate .row dt { font-size: 14px; }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.kicker::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--brass-deep), rgba(124,92,30,0));
}

h1.headline {
  font-size: clamp(33px, 6.4vw, 68px);
  line-height: 1.03;
  letter-spacing: -.015em;
  max-width: 15ch;
  margin: 0 0 22px;
}
h1.headline .turn { color: var(--brass-lit); font-style: italic; }

.standfirst {
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.55;
  max-width: 54ch;
  color: var(--paper-mid);
}

/* ── the 3D board stage ──────────────────────────────────────────────── */

.stage-frame {
  position: relative;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background:
    linear-gradient(180deg, #0a0e12 0%, #060809 100%);
}

.stage {
  position: relative;
  max-width: 1090px;
  margin: 0 auto;
  height: clamp(320px, 41vh, 500px);
}
.stage canvas { display: block; width: 100%; height: 100%; }
@media (min-width: 900px) { .stage { height: clamp(400px, 52vh, 520px); } }

.stage-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
}
.stage-fallback svg { width: min(100%, 760px); height: auto; }

.stage-caption {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 10px var(--gut) 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  justify-content: space-between;
  align-items: baseline;
  border-top: 1px solid var(--rule-soft);
}
.stage-caption .note {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.75;
  letter-spacing: .04em;
  color: #929b96;
  max-width: 62ch;
  margin-bottom: 0;
}
.stage-caption .note b { color: var(--brass); font-weight: 400; }

/* ── section scaffolding: ruled ledger ───────────────────────────────── */

.sheet { border-bottom: 1px solid var(--rule-soft); }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-top: clamp(40px, 6vw, 74px);
  padding-bottom: 6px;
}
.sec-head .lotno {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--brass);
  flex: 0 0 auto;
  padding-top: .5em;
}
.sec-head h2 {
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.12;
  letter-spacing: -.01em;
}
.sec-head + .lede {
  max-width: 60ch;
  font-size: 18px;
  padding-bottom: 8px;
}

.ruled { border-top: 1px solid var(--rule); margin-top: 26px; }

/* three-column ledger with hairline rules — used for the three steps */
.ledger {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin: 30px 0 clamp(40px, 6vw, 70px);
}
.ledger > div {
  padding: 26px 24px 30px;
  border-left: 1px solid var(--rule-soft);
}
.ledger > div:first-child { border-left: 0; padding-left: 0; }
.ledger .step-n {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--brass);
  display: block;
  margin-bottom: 12px;
}
.ledger h3 {
  font-size: 21px;
  margin-bottom: 10px;
  line-height: 1.2;
}
.ledger p { font-size: 15.5px; margin-bottom: 0; }

@media (max-width: 840px) {
  .ledger { grid-template-columns: 1fr; }
  .ledger > div { border-left: 0; border-top: 1px solid var(--rule-soft); padding: 22px 0 26px; }
  .ledger > div:first-child { border-top: 0; padding-top: 22px; }
}

/* two-column prose + aside */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 60px);
  padding: 30px 0 clamp(40px, 6vw, 70px);
}
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } }

.prose { max-width: 62ch; }
.prose h3 {
  font-size: 20px;
  margin: 30px 0 9px;
  color: var(--paper);
}
.prose h3:first-child { margin-top: 0; }
.prose ul { padding-left: 1.1em; margin: 0 0 1.05em; }
.prose li { margin-bottom: .5em; }
.prose li::marker { color: var(--brass-deep); }

/* ── data plate: the settlement-terminal readout ─────────────────────── */

.plate {
  background: linear-gradient(180deg, var(--ink-panel), #090d10);
  border: 1px solid var(--rule);
  border-left: 2px solid var(--brass-deep);
}
.plate-head {
  padding: 12px 18px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--paper-dim);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.plate-body { padding: 6px 18px 14px; }

.row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px dotted var(--rule);
}
.row:last-child { border-bottom: 0; }
.row dt, .row .k {
  font-size: 14.5px;
  color: var(--paper-dim);
  font-family: var(--serif);
}
.row dd, .row .v {
  margin: 0;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--paper);
  text-align: right;
  word-break: break-word;
}
.row .v.lit { color: var(--brass-lit); }

/* ── split table (ledger of the rent) ────────────────────────────────── */

table.ledger-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
table.ledger-table caption {
  text-align: left;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--paper-dim);
  padding-bottom: 10px;
}
table.ledger-table th,
table.ledger-table td {
  text-align: left;
  padding: 12px 14px 12px 0;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}
table.ledger-table thead th {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--paper-dim);
  font-weight: 400;
  border-bottom: 1px solid var(--rule);
}
table.ledger-table td.n,
table.ledger-table th.n {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 13.5px;
  text-align: right;
  padding: 12px 0 12px 26px;
  white-space: nowrap;
  color: var(--paper);
}
table.ledger-table thead th.n { color: var(--paper-dim); }
.scroll-x { overflow-x: auto; }

/* ── the split bar (70 / 25 / 5) ─────────────────────────────────────── */

.splitbar {
  display: flex;
  height: 46px;
  border: 1px solid var(--rule);
  margin: 4px 0 14px;
  overflow: hidden;
}
.splitbar span {
  display: flex;
  align-items: center;
  padding-left: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
}
.splitbar .s-lp     { flex: 70 1 0; background: linear-gradient(180deg, #3a2c0e, #241b08); color: var(--brass-lit); }
.splitbar .s-stake  { flex: 25 1 0; background: linear-gradient(180deg, #14302a, #0d1f1b); color: #7fc4ae; border-left: 1px solid var(--rule); }
.splitbar .s-burn   { flex: 5 1 0;  background: linear-gradient(180deg, #2e1710, #1c0e09); color: #d08b6c; border-left: 1px solid var(--rule); padding-left: 8px; }

@media (max-width: 620px) {
  .splitbar { height: auto; flex-direction: column; }
  .splitbar span { padding: 9px 12px; border-left: 0; border-top: 1px solid var(--rule); }
  .splitbar span:first-child { border-top: 0; }
}

/* ── pre-launch notice: "the board is dark" ──────────────────────────── */

.dark-board {
  border: 1px solid var(--rule);
  background:
    repeating-linear-gradient(
      135deg,
      rgba(194,147,58,.035) 0 12px,
      rgba(194,147,58,0) 12px 24px),
    linear-gradient(180deg, #0c1114, #080b0d);
  padding: clamp(24px, 4vw, 38px);
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  align-items: start;
}
@media (max-width: 760px) { .dark-board { grid-template-columns: 1fr; } }
.dark-board h3 {
  font-size: clamp(21px, 3vw, 28px);
  margin-bottom: 10px;
}
.dark-board p { font-size: 16px; max-width: 58ch; }
.dark-board p:last-child { margin-bottom: 0; }
.dark-board .lamp {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--paper-dim);
  border: 1px solid var(--rule);
  padding: 14px 16px;
  display: grid;
  gap: 9px;
}
.dark-board .lamp b { color: var(--paper); font-weight: 400; }
.dark-board .lamp .off::before {
  content: "";
  display: inline-block;
  width: 7px; height: 7px;
  margin-right: 8px;
  background: #3a2c0e;
  box-shadow: 0 0 0 1px #4d3a12;
  vertical-align: middle;
}

/* ── callout / quiet aside ───────────────────────────────────────────── */

.aside-note {
  border-left: 2px solid var(--brass-deep);
  padding: 2px 0 2px 18px;
  color: var(--paper-mid);
  font-size: 16px;
  margin: 22px 0;
}
.aside-note b { color: var(--paper); font-weight: 600; }

/* ── figure: flow diagram (SVG) ──────────────────────────────────────── */

figure.diagram {
  margin: 26px 0 0;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, #0b1013, #070a0c);
  padding: 18px;
}
figure.diagram svg { display: block; width: 100%; height: auto; }
figure.diagram figcaption {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--paper-dim);
  line-height: 1.6;
}

/* ── docs: definition list + anchors ─────────────────────────────────── */

.doc-layout > * { min-width: 0; }
.split > * { min-width: 0; }
.ledger > * { min-width: 0; }
.dark-board > * { min-width: 0; }
.foot-in > * { min-width: 0; }

.doc-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 54px);
  padding: 34px 0 clamp(40px, 6vw, 70px);
}
@media (max-width: 900px) { .doc-layout { grid-template-columns: 1fr; } }

.doc-index {
  position: sticky;
  top: 84px;
  align-self: start;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  line-height: 2.05;
}
.doc-index a { display: block; color: var(--paper-dim); border-left: 1px solid var(--rule); padding-left: 12px; }
.doc-index a:hover { color: var(--paper); border-left-color: var(--brass); }
@media (max-width: 900px) {
  .doc-index { position: static; display: flex; flex-wrap: wrap; gap: 0 8px; border-bottom: 1px solid var(--rule); padding-bottom: 12px; }
  .doc-index a { border-left: 0; padding-left: 0; padding-right: 12px; }
}

.doc-sec { padding-bottom: 34px; }
.doc-sec h2 {
  font-size: 24px;
  color: var(--paper);
  margin: 0 0 4px;
  scroll-margin-top: 90px;
}
.doc-sec > .stamp { display: block; margin-bottom: 14px; }

pre.code {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--paper-mid);
  background: #090d10;
  border: 1px solid var(--rule);
  border-left: 2px solid var(--rule);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0 0 18px;
}
pre.code b { color: var(--brass-lit); font-weight: 400; }
pre.code i { color: var(--paper-dim); font-style: normal; }

/* ── footer ──────────────────────────────────────────────────────────── */

.foot {
  border-top: 1px solid var(--rule);
  background: #060809;
  padding: 34px 0 46px;
  margin-top: 0;
}
.foot-in {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gut);
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  align-items: start;
}
@media (max-width: 760px) { .foot-in { grid-template-columns: 1fr; } }
.foot p { font-size: 14px; color: var(--paper-dim); max-width: 56ch; margin-bottom: 0; }
.foot .foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.foot .foot-links a { color: var(--paper-dim); }
.foot .foot-links a:hover { color: var(--brass-lit); }
.foot .colophon {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: #4a5450;
  text-transform: uppercase;
  margin-top: 22px;
}

/* ── next-page rail ──────────────────────────────────────────────────── */

.next-rail {
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.next-rail a {
  padding: 26px var(--gut);
  border-left: 1px solid var(--rule-soft);
  display: block;
  color: var(--paper-mid);
}
.next-rail a:first-child { border-left: 0; }
.next-rail a:hover { background: rgba(194,147,58,.045); }
.next-rail .stamp { display: block; margin-bottom: 7px; }
.next-rail .t { font-size: 20px; color: var(--paper); font-family: var(--serif); }
.next-rail a:hover .t { color: var(--brass-lit); }
@media (max-width: 700px) {
  .next-rail { grid-template-columns: 1fr; }
  .next-rail a { border-left: 0; border-top: 1px solid var(--rule-soft); }
  .next-rail a:first-child { border-top: 0; }
}

/* ── skip link ───────────────────────────────────────────────────────── */

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--brass);
  color: #0b0d0e;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  z-index: 90;
}
.skip:focus { left: 8px; top: 8px; }