:root {
  --bg: #f6f5f1; --paper: #ffffff; --ink: #1b1a17; --muted: #6a675f; --line: #e2dfd7;
  --accent: #1d5bb8; --accent-soft: rgba(29, 91, 184, .09); --warn: #b86400; --bad: #b3261e;
  --bar: #efece5; --binding: #1f6f43; --interpretive: #8a5a00; --internal: #5b5b5b;
  --serif: "Iowan Old Style", "Book Antiqua", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #131311; --paper: #1b1b19; --ink: #ebe9e3; --muted: #9b978e; --line: #33312d;
          --accent: #86adf3; --accent-soft: rgba(134, 173, 243, .12); --bar: #232220;
          --binding: #6fcf97; --interpretive: #e0b25a; --internal: #aaa; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--serif); }
a { color: var(--accent); }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; gap: 14px; align-items: center;
  padding: 10px 18px; background: var(--paper); border-bottom: 1px solid var(--line); font: 14px/1.4 var(--sans); }
.topbar .brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: .02em; }
.topbar .sp { flex: 1; }
.topbar .muted { color: var(--muted); }

/* landing */
.wrap { max-width: 980px; margin: 0 auto; padding: 32px 18px 80px; }
.hero h1 { font: 700 28px/1.25 var(--sans); margin: 8px 0 6px; }
.hero p { color: var(--muted); margin: 0 0 28px; font-family: var(--sans); font-size: 15px; }
.doclist { display: grid; gap: 14px; }
.card { display: block; background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 16px 18px; text-decoration: none; color: var(--ink); }
.card:hover { border-color: var(--accent); }
.card .t { font: 650 17px/1.35 var(--sans); }
.card .s { color: var(--muted); font: 14px/1.5 var(--sans); margin-top: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; font: 12px/1 var(--sans); }
.chip { border: 1px solid var(--line); border-radius: 999px; padding: 4px 9px; color: var(--muted); }
.chip.binding { color: var(--binding); border-color: currentColor; }
.chip.interpretive { color: var(--interpretive); border-color: currentColor; }
.chip.internal { color: var(--internal); border-color: currentColor; }
.foot { margin-top: 40px; color: var(--muted); font: 13px/1.5 var(--sans); }

/* document */
.layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } nav.toc { display: none; } }
nav.toc { position: sticky; top: 45px; height: calc(100vh - 45px); overflow: auto; padding: 12px 10px 60px 16px;
  border-right: 1px solid var(--line); font: 13px/1.35 var(--sans); }
nav.toc input { width: 100%; padding: 7px 9px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--paper); color: var(--ink); font: inherit; margin-bottom: 8px; }
nav.toc a { display: block; padding: 3px 6px; border-radius: 5px; color: var(--ink); text-decoration: none; }
nav.toc a:hover { background: var(--line); }
nav.toc a.d1 { font-weight: 650; margin-top: 8px; }
nav.toc a.pv b { display: inline-block; min-width: 30px; color: var(--muted); }
main.doc { max-width: 900px; width: 100%; margin: 0 auto; padding: 28px 40px 160px; background: var(--paper); min-height: 100vh; }
@media (max-width: 600px) { main.doc { padding: 18px 16px 140px; } }

.el { position: relative; border-radius: 3px; scroll-margin-top: 64px; }
.el.sel { background: var(--accent-soft); box-shadow: -3px 0 0 var(--accent); }
.el.flag { box-shadow: -3px 0 0 var(--warn); }
.head { cursor: pointer; }
.head:hover { background: var(--accent-soft); }
.front { text-align: center; margin: 4px 0; }
.front.issuing_formula, .front.paragraph { text-align: justify; margin: 14px 0; }
.division1 > .head, .division2 > .head, .attachment > .head { text-align: center; margin: 34px 0 14px; font-family: var(--sans); }
.division1 > .head .lbl, .attachment > .head .lbl { display: block; font-weight: 750; letter-spacing: .05em; }
.division1 > .head .hd, .attachment > .head .hd { display: block; font-weight: 650; }
.group > .head { text-align: center; font-style: italic; font-weight: 650; margin: 24px 0 8px; }
.provision { margin: 22px 0 6px; }
.provision > .head .lbl, .provision > .head .hd { font-weight: 750; }
.head .lbl { margin-right: .45em; font-weight: 650; }
.qualifier > .head { font-style: normal; }
.text, .sub1, .sub2, .sub3, .sub4, .sub5, .qualifier, .block { margin: 6px 0; }
.back { margin: 18px 0; text-align: right; font-family: var(--sans); font-size: 15px; white-space: pre-line; }
.body { margin-left: 1.9em; }
.provision > .body, .division1 > .body, .division2 > .body, .attachment > .body, .group > .body { margin-left: 0; }
.s { border-radius: 2px; }
.s.blank { letter-spacing: .02em; }
a.xr { text-decoration: none; border-bottom: 1px solid rgba(29, 91, 184, .35); }
span.pend { border-bottom: 1px dashed var(--muted); cursor: help; }
table.grid { border-collapse: collapse; width: 100%; margin: 8px 0 14px; font: 13.5px/1.45 var(--sans); }
table.grid td { border: 1px solid var(--line); padding: 4px 7px; vertical-align: top; white-space: pre-line; }
table.grid tr:first-child td { font-weight: 650; background: rgba(127, 127, 127, .07); }
.framebox { float: right; clear: right; border: 1.5px solid var(--ink); padding: 8px 10px; margin: 4px 0 8px 14px;
  font: 13px/1.35 var(--sans); text-align: center; white-space: pre-line; max-width: 190px; }

/* printed-form furniture bars */
.pbar { position: sticky; z-index: 15; display: none; justify-content: space-between; gap: 12px; padding: 5px 18px;
  background: var(--bar); color: var(--muted); border-color: var(--line); border-style: solid; font: 12px/1.3 var(--sans); }
.pbar.top { top: 45px; border-width: 0 0 1px; }
.pbar.bottom { bottom: 0; border-width: 1px 0 0; }
body.printed .pbar { display: flex; }

/* panel */
#panel { position: fixed; right: 14px; bottom: 14px; width: min(480px, calc(100vw - 28px)); max-height: 76vh; overflow: auto;
  background: var(--paper); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 14px 40px rgba(0, 0, 0, .22);
  padding: 14px 16px; font: 13px/1.5 var(--sans); display: none; z-index: 40; }
#panel .x { float: right; border: 0; background: none; font-size: 22px; line-height: 1; cursor: pointer; color: var(--muted); }
#panel h3 { margin: 0 0 4px; font-size: 16px; }
#panel .crumbs { color: var(--muted); margin-bottom: 8px; }
#panel dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; margin: 6px 0; }
#panel dt { color: var(--muted); } #panel dd { margin: 0; word-break: break-word; }
#panel code { font: 12px ui-monospace, Menlo, monospace; background: var(--bar); padding: 1px 5px; border-radius: 4px; }
#panel .refs a { margin-right: 10px; display: inline-block; }
#panel .dd { background: rgba(184, 100, 0, .09); border-radius: 5px; padding: 5px 7px; margin: 4px 0; }
.crop { border: 1px solid var(--line); background-repeat: no-repeat; margin: 6px 0; max-width: 100%; }
#status { padding: 40px; text-align: center; color: var(--muted); font-family: var(--sans); }