/* Skin for the /standards/ pages. Same geometry as the About cluster and the
   calculators hub: one text column, the site's rules, machine-readable tables
   rather than pictures of tables. */
html, body { height: 100%; }
body { background: var(--paper); }

/* Centred column, matching the article pages. */
.st-pane { max-width: 1060px; margin: 0 auto; padding: 30px 48px 60px; }
@media (max-width: 760px) { .st-pane { padding: 20px 16px 40px; } }
.st-pane h1 { font: 900 34px/1.06 var(--display); letter-spacing: -0.025em; margin: 0 0 12px; text-transform: uppercase; }
.st-pane .lede { font: 500 14px/1.62 var(--sans); color: var(--ink-2); margin: 0 0 8px; max-width: 820px; }
.st-pane .lede b { color: var(--ink); font-weight: 700; }
.st-meta { font: 800 10px/1.5 var(--sans); letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 24px; }

.st-sec { margin: 0 0 28px; scroll-margin-top: 140px; }
.st-sec > h2 { font: 900 15px/1.2 var(--display); text-transform: uppercase; letter-spacing: 0.02em;
  margin: 0 0 10px; padding: 0 0 7px; border-bottom: 1px solid var(--border); }
.st-sec > h3 { font: 800 13px/1.3 var(--sans); letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--ink-2); margin: 20px 0 8px; }
.st-sec p, .st-sec li { font: 500 13.5px/1.62 var(--sans); color: var(--ink-2); }
.st-sec p { margin: 0 0 10px; }
.st-sec b { color: var(--ink); font-weight: 700; }
.st-sec a { color: var(--red); }
.st-sec ul, .st-sec ol { margin: 0 0 12px; padding-left: 22px; }
.st-sec li { margin-bottom: 7px; }

/* a direct answer, first thing in a section — the format both a reader and a
   retrieval system can use without wading through an introduction */
.st-answer { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--red);
  padding: 12px 16px; margin: 0 0 14px; }
.st-answer p { margin: 0; font: 500 13.5px/1.62 var(--sans); color: var(--ink); }
.st-answer p + p { margin-top: 8px; }

.st-eq { background: var(--carbon); color: var(--paper); padding: 12px 16px; margin: 10px 0 6px;
  font: 500 13.5px/1.6 "Consolas", monospace; overflow-x: auto; white-space: pre-wrap; }
.st-eq b { color: #fff; }
.st-where { font: 500 12.5px/1.55 var(--sans); color: var(--ink-3); margin: 0 0 14px; }
.st-where b { color: var(--ink-2); }

.st-table-wrap { overflow-x: auto; margin: 10px 0 16px; }
.st-table { width: 100%; border-collapse: collapse; font: 500 12.5px/1.45 var(--sans); min-width: 560px; }
.st-table th, .st-table td { border-bottom: 1px solid var(--line); padding: 7px 10px; text-align: right; vertical-align: top; }
.st-table th { font: 800 9.5px/1.3 var(--sans); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); border-bottom: 1px solid var(--ink); }
.st-table th.l, .st-table td.l { text-align: left; }
.st-table td.c, .st-table th.c { text-align: center; }
.st-table tr:hover td { background: var(--surface); }
.st-table caption { caption-side: bottom; text-align: left; font: 500 11.5px/1.5 var(--sans);
  color: var(--ink-3); padding-top: 8px; }

.st-cta { display: inline-block; font: 800 11px/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--paper) !important; background: var(--ink); border: 1px solid var(--ink);
  padding: 10px 14px; text-decoration: none; margin: 4px 0 8px; }
.st-cta:hover { background: var(--red); border-color: var(--red); }

.st-links { list-style: none; margin: 0; padding: 0; }
.st-links li { border-bottom: 1px solid var(--line); }
.st-links a { display: grid; grid-template-columns: 66px 1fr; gap: 0 12px; padding: 10px 4px;
  text-decoration: none; color: var(--ink); transition: background .1s; }
.st-links a:hover { background: var(--surface); }
.st-links .n { font: 800 10.5px/1.5 var(--display); color: var(--red); }
.st-links .t { font: 700 13px/1.35 var(--sans); }
.st-links .d { font: 500 12.5px/1.5 var(--sans); color: var(--ink-2); margin-top: 2px; }
@media (max-width: 600px) { .st-links a { grid-template-columns: 52px 1fr; } }

.st-tree { list-style: none; padding: 0; margin: 0; }
.st-tree a { display: flex; gap: 8px; align-items: baseline; padding: 8px 14px; text-decoration: none;
  color: var(--ink); border-bottom: 1px solid var(--line); font: 600 12px/1.35 var(--sans); transition: background .1s; }
.st-tree a:hover { background: var(--paper); }
.st-tree a.is-on { background: var(--ink); color: var(--paper); }
.st-tree .c { font: 800 9.5px/1.4 var(--display); color: var(--ink-3); margin-left: auto; }
.st-tree a.is-on .c { color: var(--red); }

.st-note { font: 500 12.5px/1.6 var(--sans); color: var(--ink-3); border-top: 1px solid var(--border);
  padding-top: 12px; margin-top: 18px; }

/* The section index that used to sit in a rail. As a row under the lede it is
   part of the document, and it cannot cover the text the way a fixed,
   user-resizable rail could. */
.doc-jump { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 26px; padding: 12px 0 0;
  border-top: 1px solid var(--border); }
.doc-jump a { font: 700 10.5px/1 var(--sans); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-2); background: var(--surface); border: 1px solid var(--border);
  padding: 6px 9px; text-decoration: none; }
.doc-jump a:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.doc-jump a[aria-current="page"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }