:root {
    --paper:        #f0ece2;
    --paper-2:      #e8e2d3;
    --paper-line:   #d6cebb;
    --rule:         #b8af9b;
    --rule-soft:    #cfc7b3;
    --ink:          #14181f;
    --ink-2:        #2b2f37;
    --ink-3:        #4a4f58;
    --ink-mute:     #7a7c7e;
    --accent:       #7a2f24;
    --accent-soft:  #b87060;
    --green-ok:     #3d5d3a;
    --amber-mid:    #8a6a1f;
    --red-stop:     #7a2f24;

    --serif: "Source Serif 4", "Times New Roman", Georgia, serif;
    --sans:  "IBM Plex Sans", -apple-system, "Helvetica Neue", Arial, sans-serif;
    --mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

    --content: 1180px;
    --gutter: 56px;

    color-scheme: light;
  }

  html[data-paper="cool"] {
    --paper:        #eef0ee;
    --paper-2:      #e3e7e4;
    --paper-line:   #d0d6d2;
    --rule:         #aab1ad;
    --rule-soft:    #c7cdc8;
    --ink:          #11161a;
    --ink-2:        #262b30;
  }
  html[data-paper="charcoal"] {
    --paper:        #15171a;
    --paper-2:      #1c1f24;
    --paper-line:   #2b2f36;
    --rule:         #3a4049;
    --rule-soft:    #2a2e35;
    --ink:          #ece6d4;
    --ink-2:        #c8c2b1;
    --ink-3:        #9a958a;
    --ink-mute:     #7b756a;
    color-scheme: dark;
  }

  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.55;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    font-feature-settings: "ss01", "cv11";
  }

  /* paper grain */
  body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: 100;
    background:
      radial-gradient(1200px 800px at 20% -10%, rgba(0,0,0,0.025), transparent 60%),
      radial-gradient(900px 600px at 110% 110%, rgba(0,0,0,0.03), transparent 60%);
    mix-blend-mode: multiply;
  }
  html[data-paper="charcoal"] body::before {
    mix-blend-mode: screen;
    background:
      radial-gradient(1200px 800px at 20% -10%, rgba(255,255,255,0.04), transparent 60%),
      radial-gradient(900px 600px at 110% 110%, rgba(255,255,255,0.03), transparent 60%);
  }

  /* ============ TOP STRIP ============ */
  .topstrip {
    position: sticky; top: 0; z-index: 50;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-2);
  }
  .topstrip .row {
    max-width: var(--content);
    margin: 0 auto;
    padding: 12px var(--gutter);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    column-gap: 28px;
    row-gap: 8px;
  }

  /* SEAL — left */
  .topstrip .seal {
    display: inline-flex; align-items: center; gap: 10px;
    min-width: 0;
    flex: 0 1 auto;
  }
  .topstrip .seal .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 18%, transparent);
    flex-shrink: 0;
  }
  .topstrip .seal a { transition: color .15s; white-space: nowrap; }
  .topstrip .seal a:hover { color: var(--accent) !important; }
  .topstrip .seal .slash { color: var(--rule); margin: 0 2px; }
  .topstrip .seal .role {
    color: var(--ink-mute);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
  }

  /* CTR — center status caption, only when it fits */
  .topstrip .ctr {
    text-align: center;
    color: var(--ink-3);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
    flex: 0 1 auto;
    order: 2;
  }
  .topstrip .ctr .bracket {
    font-family: var(--mono);
    color: var(--rule);
    letter-spacing: 0;
    user-select: none;
  }
  .topstrip .ctr .stat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    padding: 2px 8px;
    border: 1px solid color-mix(in oklab, var(--accent) 35%, var(--rule));
    background: color-mix(in oklab, var(--accent) 4%, transparent);
  }
  .topstrip .ctr .stat::before {
    content: "";
    width: 5px; height: 5px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
  }
  .topstrip .ctr .caption {
    color: var(--ink-3);
  }

  /* META — right */
  .topstrip .meta {
    text-align: right;
    color: var(--ink-mute);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex: 0 1 auto;
    white-space: nowrap;
    order: 3;
  }
  .topstrip .meta .pip { color: var(--ink-2); }
  .topstrip .meta .div { color: var(--rule); }

  /* ============ TICKER NAV ============ */
  .ticker {
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .ticker .inner {
    max-width: var(--content);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    overflow-x: auto;
    gap: 0;
    scrollbar-width: none;
  }
  .ticker .inner::-webkit-scrollbar { display: none; }
  .ticker a {
    color: var(--ink-3);
    text-decoration: none;
    padding: 12px 18px 12px 0;
    margin-right: 18px;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: color .15s, border-color .15s;
  }
  .ticker a span {
    color: var(--ink-mute);
    margin-right: 8px;
  }
  .ticker a:hover, .ticker a.active {
    color: var(--ink);
  }
  .ticker a.active span { color: var(--accent); }

  /* ============ LAYOUT ============ */
  .page {
    max-width: var(--content);
    margin: 0 auto;
    padding: 0 var(--gutter);
  }

  section {
    border-top: 1px solid var(--rule);
    padding: 88px 0 96px;
    position: relative;
  }
  section:first-of-type { border-top: none; }
  section .page { position: relative; }

  /* section header pattern */
  .sec-head {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 32px;
    align-items: baseline;
    margin-bottom: 48px;
  }
  .sec-head .num {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    padding-top: 8px;
    border-top: 1px solid var(--ink);
    align-self: start;
  }
  .sec-head h2 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 44px;
    line-height: 1.08;
    letter-spacing: -0.015em;
    margin: 0;
    color: var(--ink);
    max-width: 22ch;
    text-wrap: pretty;
  }
  .sec-head .kicker {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 14px;
    display: block;
  }

  .body-col {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 32px;
  }
  .body-col .gut { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute); padding-top: 4px; }
  .body-col p { margin: 0 0 1em; font-size: 16.5px; line-height: 1.6; color: var(--ink-2); max-width: 64ch; }
  .body-col p strong { color: var(--ink); font-weight: 500; }

  /* ============ HERO ============ */
  .hero {
    padding: 72px 0 96px;
    border-top: none;
  }
  .hero .crumbs {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 56px;
    display: flex;
    gap: 24px;
    align-items: center;
  }
  .hero .crumbs .sep { color: var(--rule); }
  .hero .crumbs b { color: var(--ink); font-weight: 500; letter-spacing: 0.12em; }

  .hero h1 {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 92px;
    line-height: 0.98;
    letter-spacing: -0.025em;
    margin: 0 0 28px;
    color: var(--ink);
    max-width: 22ch;
    text-wrap: balance;
  }
  .hero h1 em {
    font-style: italic;
    font-weight: 300;
    color: var(--accent);
  }

  .hero .sub {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 23px;
    line-height: 1.42;
    color: var(--ink-2);
    max-width: 58ch;
    margin: 0 0 56px;
  }

  .hero .proofline {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-3);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 14px 0;
    margin: 0 0 40px;
    max-width: 760px;
    display: flex;
    gap: 18px;
    align-items: center;
  }
  .hero .proofline .lab { color: var(--accent); }

  .hero .ctas {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
  }

  /* buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 16px 22px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--ink);
    color: var(--paper);
    background: var(--ink);
    cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
    border-radius: 0;
    white-space: nowrap;
  }
  .btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
  .btn .arr { font-family: var(--serif); font-size: 16px; line-height: 1; transform: translateY(-1px); }
  .btn.ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--ink);
  }
  .btn.ghost:hover { background: var(--ink); color: var(--paper); }

  /* hero schematic */
  .hero-grid {
    margin-top: 80px;
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 32px;
    align-items: start;
  }
  .hero-grid .gut {
    font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute);
    border-top: 1px solid var(--ink);
    padding-top: 8px;
  }

  /* ============ ASSET SNAPSHOT TABLE ============ */
  .ledger {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--sans);
    font-size: 14.5px;
  }
  .ledger th, .ledger td {
    text-align: left;
    padding: 16px 18px;
    border-bottom: 1px solid var(--rule-soft);
    vertical-align: top;
  }
  .ledger thead th {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    font-weight: 500;
    border-bottom: 1px solid var(--ink);
    background: transparent;
    padding-bottom: 12px;
  }
  .ledger td:first-child {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-2);
    width: 32%;
    padding-right: 24px;
  }
  .ledger td { color: var(--ink-2); }
  .ledger td strong { color: var(--ink); font-weight: 500; }
  .ledger tbody tr:last-child td { border-bottom: 1px solid var(--ink); }

  .ledger.three-col td:first-child { width: 26%; }
  .ledger.three-col td:nth-child(2) { width: 38%; }

  /* status pill in tables */
  .pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-2);
    padding: 4px 8px 4px 6px;
    border: 1px solid var(--rule);
    background: var(--paper);
  }
  .pill::before {
    content: "";
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--ink-mute);
  }
  .pill.ok::before { background: var(--green-ok); }
  .pill.mid::before { background: var(--amber-mid); }
  .pill.stop::before { background: var(--red-stop); }
  .pill.live::before {
    background: var(--accent);
    box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 80%, transparent);
    animation: pulse 2.4s ease-out infinite;
  }
  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 70%, transparent); }
    100% { box-shadow: 0 0 0 8px color-mix(in oklab, var(--accent) 0%, transparent); }
  }

  /* ============ SCHEMATIC MAP ============ */
  .schematic {
    border: 1px solid var(--rule);
    background: var(--paper-2);
    padding: 28px;
    position: relative;
  }
  .schematic .map-head {
    display: flex; align-items: baseline; justify-content: space-between;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 14px;
    margin-bottom: 22px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }
  .schematic .map-head .title { color: var(--ink); }
  .schematic svg { display: block; width: 100%; height: auto; }
  .schematic .map-foot {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--rule);
  }
  .schematic .map-foot .lk {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-2);
    display: flex; align-items: flex-start; gap: 10px;
  }
  .schematic .map-foot .lk .sw {
    width: 14px; height: 14px;
    border: 1px solid var(--ink);
    margin-top: 2px;
    flex-shrink: 0;
  }
  .schematic .map-foot .lk .sw.fill-1 { background: color-mix(in oklab, var(--accent) 28%, var(--paper)); border-color: var(--accent); }
  .schematic .map-foot .lk .sw.fill-2 { background: color-mix(in oklab, var(--ink) 22%, var(--paper)); }
  .schematic .map-foot .lk .sw.fill-3 {
    background:
      repeating-linear-gradient(45deg, transparent 0 4px, color-mix(in oklab, var(--ink) 30%, transparent) 4px 5px),
      var(--paper);
  }
  .schematic .map-foot .lk .sw.fill-4 {
    background: var(--paper);
    border-style: dashed;
  }
  .schematic .map-foot .lk small { color: var(--ink-mute); font-weight: 400; display: block; margin-top: 2px; text-transform: none; letter-spacing: 0.02em; }

  /* ============ Chokepoint stack ============ */
  .chokestack {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0;
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    margin-top: 8px;
  }
  .chokestack .node {
    padding: 18px 14px 22px;
    border-right: 1px solid var(--rule-soft);
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-2);
    background: var(--paper);
    position: relative;
    min-height: 110px;
  }
  .chokestack .node:last-child { border-right: 0; }
  .chokestack .node .step {
    color: var(--ink-mute);
    display: block;
    font-size: 10px;
    margin-bottom: 12px;
  }
  .chokestack .node .lab {
    color: var(--ink);
    line-height: 1.35;
    font-weight: 500;
    text-transform: uppercase;
  }
  .chokestack .node.live {
    background: color-mix(in oklab, var(--accent) 8%, var(--paper));
    border-top: 2px solid var(--accent);
    margin-top: -1px;
  }
  .chokestack .node.live .step { color: var(--accent); }

  /* ============ Demand book ============ */
  .dual-toggle {
    display: inline-flex;
    border: 1px solid var(--ink);
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 24px;
  }
  .dual-toggle button {
    padding: 9px 16px;
    border: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    font: inherit;
    letter-spacing: inherit;
    text-transform: inherit;
    border-radius: 0;
  }
  .dual-toggle button.on { background: var(--ink); color: var(--paper); }

  .demand-card {
    border: 1px solid var(--rule);
    padding: 28px 28px 24px;
    background: var(--paper-2);
  }
  .demand-card .top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 14px;
    margin-bottom: 20px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }
  .demand-card .top .title { color: var(--ink); }

  .demand-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    margin: 22px 0 0;
  }
  .demand-stats .stat {
    padding: 18px 18px 18px 0;
    border-right: 1px solid var(--rule);
  }
  .demand-stats .stat:last-child { border-right: 0; }
  .demand-stats .stat .k {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 8px;
  }
  .demand-stats .stat .v {
    font-family: var(--serif);
    font-size: 36px;
    font-weight: 300;
    color: var(--ink);
    line-height: 1;
  }
  .demand-stats .stat .v small {
    font-size: 14px;
    color: var(--ink-3);
    margin-left: 4px;
    font-family: var(--mono);
  }
  .demand-stats .stat .sub {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-3);
    margin-top: 6px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  /* ============ Diligence matrix ============ */
  .matrix .head, .matrix .row {
    display: grid;
    grid-template-columns: 1.2fr 1.8fr 1.8fr 110px;
    gap: 22px;
    padding: 16px 0;
    border-bottom: 1px solid var(--rule-soft);
    align-items: start;
  }
  .matrix .head {
    border-bottom: 1px solid var(--ink);
    border-top: 1px solid var(--ink);
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    padding: 12px 0;
  }
  .matrix .row .ws {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink);
  }
  .matrix .row .ws .id {
    color: var(--ink-mute);
    margin-right: 8px;
  }
  .matrix .row .cell {
    color: var(--ink-2);
    font-size: 14.5px;
    line-height: 1.55;
  }
  .matrix .row .cell.next { color: var(--ink); }
  .matrix .row .stat { justify-self: end; }
  .matrix .row:last-child { border-bottom: 1px solid var(--ink); }

  /* ============ Transaction structures cards ============ */
  .tx-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--rule-soft);
  }
  .tx-card {
    padding: 26px 26px 28px;
    border-right: 1px solid var(--rule-soft);
    border-bottom: 1px solid var(--rule-soft);
    background: var(--paper);
    position: relative;
    min-height: 280px;
    display: flex;
    flex-direction: column;
  }
  .tx-card .ix {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
  }
  .tx-card .ix .fit { color: var(--accent); }
  .tx-card h4 {
    font-family: var(--serif);
    font-size: 24px;
    font-weight: 400;
    margin: 0 0 18px;
    color: var(--ink);
    letter-spacing: -0.01em;
    line-height: 1.15;
  }
  .tx-card .roles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    border-top: 1px solid var(--rule-soft);
    padding-top: 16px;
    margin-top: auto;
  }
  .tx-card .roles .col h5 {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin: 0 0 8px;
    font-weight: 500;
  }
  .tx-card .roles .col p {
    font-size: 13.5px;
    margin: 0;
    color: var(--ink-2);
    line-height: 1.5;
  }
  .tx-card.featured {
    background: color-mix(in oklab, var(--accent) 7%, var(--paper));
    border-top: 2px solid var(--accent);
    margin-top: -1px;
  }

  /* ============ Process / Timeline ============ */
  .process-rail {
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    display: grid;
    grid-template-columns: repeat(5, 1fr);
  }
  .process-rail .stop {
    padding: 18px 16px 22px;
    border-right: 1px solid var(--rule-soft);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }
  .process-rail .stop:last-child { border-right: 0; }
  .process-rail .stop .k { color: var(--ink-mute); display: block; margin-bottom: 10px; font-size: 10px; }
  .process-rail .stop .v { color: var(--ink); font-weight: 500; }
  .process-rail .stop .d {
    color: var(--ink-3);
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--rule-soft);
    font-size: 10.5px;
    font-weight: 400;
    display: block;
    letter-spacing: 0.08em;
  }

  /* criteria list */
  .crit-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid var(--rule-soft);
  }
  .crit-list li {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 22px;
    padding: 14px 0;
    border-bottom: 1px solid var(--rule-soft);
    font-size: 16px;
    color: var(--ink-2);
  }
  .crit-list li .n {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--ink-mute);
    padding-top: 4px;
  }

  /* ============ Diligence room form ============ */
  .room-card {
    border: 1px solid var(--ink);
    background: var(--paper);
    padding: 36px 40px 32px;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
  }
  .room-card .left h3 {
    font-family: var(--serif);
    font-size: 28px;
    font-weight: 400;
    margin: 0 0 16px;
    color: var(--ink);
    letter-spacing: -0.01em;
  }
  .room-card .left p {
    color: var(--ink-2);
    font-size: 15.5px;
    margin: 0 0 18px;
    line-height: 1.55;
    max-width: 42ch;
  }
  .room-card .room-index {
    list-style: none; padding: 0; margin: 24px 0 0;
    border-top: 1px solid var(--rule-soft);
  }
  .room-card .room-index li {
    display: grid;
    grid-template-columns: 34px 1fr auto;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid var(--rule-soft);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-2);
    align-items: center;
  }
  .room-card .room-index li .n { color: var(--ink-mute); }
  .room-card .room-index li .lock {
    font-size: 10px;
    color: var(--ink-mute);
    letter-spacing: 0.1em;
  }
  .room-card .room-index li.open .lock { color: var(--green-ok); }
  .room-card .room-index li.gated .lock { color: var(--accent); }

  /* form */
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 18px;
  }
  .form-grid .full { grid-column: span 2; }
  .field { display: flex; flex-direction: column; }
  .field label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 6px;
  }
  .field label .req { color: var(--accent); margin-left: 4px; }
  .field input, .field select, .field textarea {
    font-family: var(--sans);
    font-size: 14px;
    color: var(--ink);
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--rule);
    padding: 8px 0 8px;
    border-radius: 0;
    outline: none;
    transition: border-color .15s;
    appearance: none;
  }
  .field input:focus, .field select:focus, .field textarea:focus {
    border-bottom-color: var(--accent);
  }
  .field input.invalid, .field select.invalid {
    border-bottom-color: var(--accent);
    background: color-mix(in oklab, var(--accent) 6%, transparent);
  }
  .field textarea { min-height: 60px; resize: vertical; }
  .field select {
    background: transparent url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a7c7e' stroke-width='1' fill='none'/%3E%3C/svg%3E") no-repeat right 4px center;
    padding-right: 22px;
  }
  html[data-paper="charcoal"] .field select {
    background: transparent url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23ece6d4' stroke-width='1' fill='none'/%3E%3C/svg%3E") no-repeat right 4px center;
  }
  .checkbox-row {
    display: flex; align-items: flex-start; gap: 10px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--ink-2);
    margin-top: 18px;
  }
  .checkbox-row input { margin-top: 2px; accent-color: var(--accent); }
  .submit-row {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--rule);
  }
  .submit-row .meta {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }
  .submit-row .meta b { color: var(--accent); font-weight: 500; }

  /* sent state */
  .sent-state {
    border: 1px solid var(--ink);
    padding: 36px 40px;
    background: var(--paper-2);
    text-align: left;
  }
  .sent-state .stamp {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid var(--accent);
    display: inline-block;
    padding: 6px 10px;
    margin-bottom: 24px;
  }
  .sent-state h3 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 30px;
    margin: 0 0 12px;
  }
  .sent-state p { color: var(--ink-2); max-width: 56ch; margin: 0 0 12px; }
  .sent-state .ref {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-mute);
    margin-top: 24px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .sent-state .ref b { color: var(--ink); }

  /* ============ FAQ ============ */
  .faq-item {
    border-bottom: 1px solid var(--rule-soft);
  }
  .faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 22px 0;
    display: grid;
    grid-template-columns: 60px 1fr 30px;
    gap: 22px;
    align-items: baseline;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item .n {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--ink-mute);
  }
  .faq-item .q {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    line-height: 1.3;
    letter-spacing: -0.005em;
  }
  .faq-item .plus {
    font-family: var(--mono);
    font-size: 18px;
    color: var(--accent);
    text-align: right;
    line-height: 1;
    transition: transform .2s;
  }
  .faq-item[open] .plus { transform: rotate(45deg); }
  .faq-item .a {
    padding: 0 0 28px 82px;
    color: var(--ink-2);
    font-size: 16px;
    line-height: 1.6;
    max-width: 70ch;
  }

  /* ============ Anti-pattern strip ============ */
  .anti {
    margin-top: 24px;
    padding: 22px 24px;
    border: 1px solid var(--rule);
    background: var(--paper-2);
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.04em;
    color: var(--ink-2);
    line-height: 1.6;
  }
  .anti .h {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--ink-mute);
    margin-bottom: 10px;
  }
  .anti .strike { text-decoration: line-through; color: var(--ink-mute); margin-right: 14px; display: inline-block; }

  /* ============ Footer ============ */
  footer.colophon {
    border-top: 1px solid var(--ink);
    padding: 56px 0 80px;
    margin-top: 40px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--ink-3);
    text-transform: uppercase;
  }
  footer.colophon .row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
  footer.colophon h6 {
    color: var(--ink-mute);
    font-weight: 500;
    margin: 0 0 10px;
    font-size: 10px;
    letter-spacing: 0.14em;
  }
  footer.colophon p { color: var(--ink-2); margin: 0; line-height: 1.6; text-transform: none; letter-spacing: 0.02em; font-size: 12px; }
  footer.colophon p.disclaimer { color: var(--ink-mute); margin-top: 28px; font-size: 10.5px; max-width: 100ch; }

  /* MODAL overlay (legal NDA) */
  .modal-wrap {
    position: fixed; inset: 0;
    background: color-mix(in oklab, var(--ink) 65%, transparent);
    backdrop-filter: blur(2px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 40px;
  }
  .modal-wrap.show { display: flex; }
  .modal {
    background: var(--paper);
    border: 1px solid var(--ink);
    max-width: 640px;
    width: 100%;
    max-height: 85vh;
    overflow: auto;
    padding: 32px 40px;
  }
  .modal h3 {
    font-family: var(--serif);
    font-size: 26px;
    font-weight: 400;
    margin: 0 0 8px;
  }
  .modal .stamp {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
    display: block;
  }
  .modal .legal {
    font-family: var(--sans);
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.55;
    max-height: 280px;
    overflow: auto;
    border: 1px solid var(--rule);
    padding: 16px 18px;
    margin: 14px 0 18px;
    background: var(--paper-2);
  }
  .modal .legal p { margin: 0 0 0.8em; }
  .modal .legal h5 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); margin: 16px 0 6px; font-weight: 500; }
  .modal .modal-actions { display: flex; gap: 14px; justify-content: flex-end; margin-top: 8px; align-items: center; }
  .modal .btn.ghost { padding: 12px 18px; }
  .modal .btn { padding: 12px 18px; }

  /* small util */
  .rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }
  .smallcaps { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); }

  /* index gutter on scroll */
  .page-index {
    position: fixed;
    top: 50%;
    right: 18px;
    transform: translateY(-50%);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
    display: flex; flex-direction: column;
    gap: 8px;
    z-index: 40;
    text-align: right;
  }
  .page-index a {
    color: var(--ink-mute);
    text-decoration: none;
    padding: 4px 6px;
    border-right: 2px solid transparent;
    transition: color .15s, border-color .15s;
  }
  .page-index a.active {
    color: var(--accent);
    border-right-color: var(--accent);
  }
  .page-index.hide { display: none; }
  @media (max-width: 1400px) { .page-index { display: none; } }

  /* Hide demand panes */
  [data-demand-pane] { display: none; }
  [data-demand-pane].show { display: block; }
  [data-process-pane] { display: none; }
  [data-process-pane].show { display: block; }

  /* =====================================================
     RESPONSIVE  —  Tablet (≤960) and Mobile (≤640)
     ===================================================== */

  /* Tablet & below */
  @media (max-width: 1080px) {
    .topstrip .row {
      padding: 11px var(--gutter);
    }
    /* drop the center caption — re-emerges as its own line on tablet */
    .topstrip .ctr {
      flex: 1 0 100%;
      order: 3;
      justify-content: flex-start;
      padding-top: 4px;
      border-top: 1px dashed var(--rule-soft);
      margin-top: 2px;
    }
    .topstrip .meta { order: 2; }
  }
  @media (max-width: 960px) {
    :root { --gutter: 32px; }
    .topstrip .meta .pip,
    .topstrip .meta .div { display: none; }
    .topstrip .meta { font-size: 10px; }

    section { padding: 64px 0 72px; }

    .sec-head { grid-template-columns: 1fr; gap: 14px; margin-bottom: 32px; }
    .sec-head .num { border-top: none; padding-top: 0; }
    .sec-head h2 { font-size: 36px; }

    .body-col { grid-template-columns: 1fr; gap: 12px; }
    .body-col .gut {
      border-top: 1px solid var(--rule);
      padding-top: 6px;
      letter-spacing: 0.14em;
    }
    .body-col p { font-size: 15.5px; }

    .hero { padding: 48px 0 64px; }
    .hero .crumbs { flex-wrap: wrap; gap: 8px 14px; margin-bottom: 36px; font-size: 10px; }
    .hero h1 { font-size: 64px; line-height: 1.0; max-width: none; }
    .hero .sub { font-size: 19px; max-width: none; margin-bottom: 36px; }
    .hero .proofline {
      flex-direction: column; align-items: flex-start; gap: 6px;
      padding: 12px 0; font-size: 11px;
    }
    .hero .ctas { gap: 12px; }
    .hero .ctas .smallcaps { width: 100%; margin-left: 0; }
    .btn { padding: 14px 18px; font-size: 11.5px; }

    .hero-grid { grid-template-columns: 1fr; gap: 14px; margin-top: 56px; }
    .hero-grid .gut { border-top: 1px solid var(--rule); padding-top: 6px; }

    .schematic { padding: 18px; }
    .schematic .map-foot {
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    /* Ledger tables collapse into stacked "key/value" cards */
    .ledger thead { display: none; }
    .ledger, .ledger tbody, .ledger tr, .ledger td { display: block; width: 100%; }
    .ledger tr {
      border-bottom: 1px solid var(--rule-soft);
      padding: 14px 0;
    }
    .ledger tr:last-child { border-bottom: 1px solid var(--ink); }
    .ledger td {
      padding: 4px 0 !important;
      border: 0 !important;
      width: auto !important;
    }
    .ledger td:first-child {
      font-size: 10.5px;
      color: var(--ink-mute);
      letter-spacing: 0.12em;
      padding-bottom: 6px !important;
      width: auto !important;
    }
    .ledger td:not(:first-child) { font-size: 14.5px; color: var(--ink-2); }

    /* Chokestack — 2 columns */
    .chokestack { grid-template-columns: repeat(2, 1fr); }
    .chokestack .node {
      border-right: 1px solid var(--rule-soft);
      border-bottom: 1px solid var(--rule-soft);
      min-height: 88px;
    }
    .chokestack .node:nth-child(2n) { border-right: 0; }
    .chokestack .node:nth-last-child(-n+2) { border-bottom: 0; }

    /* Demand stats — 2 columns */
    .demand-stats { grid-template-columns: repeat(2, 1fr); }
    .demand-stats .stat {
      border-right: 1px solid var(--rule);
      border-bottom: 1px solid var(--rule);
      padding: 14px 14px 14px 0;
    }
    .demand-stats .stat:nth-child(2n) { border-right: 0; padding-right: 0; }
    .demand-stats .stat:nth-last-child(-n+2) { border-bottom: 0; }
    .demand-stats .stat .v { font-size: 30px; }
    .demand-card { padding: 20px 18px; }
    .demand-card .top { flex-direction: column; align-items: flex-start; gap: 4px; }
    .dual-toggle { display: flex; width: 100%; }
    .dual-toggle button { flex: 1; text-align: center; }

    /* Diligence matrix — restructure rows */
    .matrix .head { display: none; }
    .matrix .row {
      grid-template-columns: 1fr;
      gap: 10px;
      padding: 18px 0;
    }
    .matrix .row .ws { font-size: 11.5px; }
    .matrix .row .cell { font-size: 14px; }
    .matrix .row .cell::before {
      content: attr(data-label);
      display: block;
      font-family: var(--mono);
      font-size: 10px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--ink-mute);
      margin-bottom: 4px;
    }
    .matrix .row .stat { justify-self: start; }

    /* Transaction cards — 1 column */
    .tx-grid { grid-template-columns: 1fr; }
    .tx-card { min-height: 0; padding: 22px 20px; }
    .tx-card[style*="grid-column: span 2"] { grid-column: span 1 !important; }
    .tx-card .roles { grid-template-columns: 1fr; gap: 12px; }

    /* Process rail */
    .process-rail {
      grid-template-columns: 1fr;
    }
    .process-rail .stop {
      border-right: 0;
      border-bottom: 1px solid var(--rule-soft);
    }
    .process-rail .stop:last-child { border-bottom: 0; }

    /* Criteria list */
    .crit-list li { grid-template-columns: 40px 1fr; gap: 14px; font-size: 15px; }

    /* Diligence room */
    .room-card {
      grid-template-columns: 1fr;
      gap: 32px;
      padding: 24px 22px;
    }
    .form-grid { grid-template-columns: 1fr; }
    .form-grid .full { grid-column: span 1; }
    .submit-row {
      flex-direction: column;
      align-items: stretch;
      gap: 12px;
    }
    .submit-row > div { flex-direction: column; display: flex; gap: 10px; }
    .submit-row .btn { justify-content: center; }
    .sent-state { padding: 24px 22px; }

    /* FAQ */
    .faq-item summary {
      grid-template-columns: 40px 1fr 24px;
      gap: 14px;
      padding: 18px 0;
    }
    .faq-item .q { font-size: 18px; }
    .faq-item .a { padding-left: 54px; font-size: 15px; }

    /* Footer */
    footer.colophon .row { grid-template-columns: 1fr; gap: 20px; }
    footer.colophon { padding: 40px 0 60px; }

    /* Modal */
    .modal-wrap { padding: 20px; }
    .modal { padding: 24px 22px; }
    .modal .modal-actions {
      flex-direction: column-reverse;
      align-items: stretch;
    }
    .modal .modal-actions .btn { justify-content: center; }

    /* Anti-pattern strip */
    .anti .strike { display: block; margin: 4px 0; }
  }

  /* Phones */
  @media (max-width: 640px) {
    :root { --gutter: 20px; }
    body { font-size: 14.5px; }

    .topstrip .row {
      row-gap: 4px;
    }
    .topstrip .seal .role,
    .topstrip .seal .slash { display: none; }
    .topstrip .ctr { font-size: 10px; padding-top: 6px; }

    .ticker .inner { padding: 0 var(--gutter); }
    .ticker a { padding: 11px 14px 11px 0; margin-right: 14px; }

    section { padding: 52px 0 60px; }

    .sec-head h2 { font-size: 28px; line-height: 1.1; }
    .sec-head .num { font-size: 10px; }

    .hero { padding: 36px 0 56px; }
    .hero h1 { font-size: 44px; letter-spacing: -0.02em; }
    .hero .sub { font-size: 16.5px; line-height: 1.45; }
    .hero .crumbs { font-size: 9.5px; gap: 6px 10px; }
    .hero .crumbs .sep { display: none; }
    .hero .proofline { font-size: 10.5px; }

    .ctas { width: 100%; }
    .ctas .btn { width: 100%; justify-content: center; }
    .ctas .btn.ghost { width: 100%; }

    .schematic { padding: 14px; }
    .schematic .map-head { flex-direction: column; align-items: flex-start; gap: 4px; }
    .schematic .map-foot { grid-template-columns: 1fr; gap: 10px; }

    /* Map SVG — keep readable */
    .schematic svg { min-width: 480px; }
    .schematic { overflow-x: auto; }

    .chokestack { grid-template-columns: 1fr; }
    .chokestack .node { border-right: 0; min-height: 0; padding: 14px 12px; }
    .chokestack .node:not(:last-child) { border-bottom: 1px solid var(--rule-soft); }
    .chokestack .node:last-child { border-bottom: 0; }

    .demand-stats { grid-template-columns: 1fr; }
    .demand-stats .stat {
      border-right: 0;
      padding: 12px 0;
    }
    .demand-stats .stat:not(:last-child) { border-bottom: 1px solid var(--rule-soft); }

    .tx-card h4 { font-size: 21px; }

    .crit-list li {
      grid-template-columns: 1fr;
      gap: 4px;
      padding: 12px 0;
    }
    .crit-list li .n { padding-top: 0; }

    .faq-item summary {
      grid-template-columns: 36px 1fr 20px;
      gap: 10px;
    }
    .faq-item .q { font-size: 17px; }
    .faq-item .a { padding-left: 46px; font-size: 14.5px; }

    .room-card { padding: 20px 16px; }
    .room-card .left h3 { font-size: 24px; }
    .room-card .room-index li { grid-template-columns: 26px 1fr auto; gap: 8px; font-size: 10px; }

    .anti { padding: 16px 16px; }

    footer.colophon { font-size: 10px; }
    footer.colophon p { font-size: 11.5px; }
  }