/* Shared Script shell, with a reading layout for arithmetic lessons. */
.math-page .top { max-width: 1440px; }
.math-page .top .brand { font-size: 23px; white-space: nowrap; }
.math-page .pagenav {
  max-width: 1296px;
  margin: 24px auto 0;
  padding: 0 24px;
  gap: 8px;
  position: static;
  background: transparent;
  border: 0;
}
.math-page .pagenav a {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 24px;
  color: var(--muted);
  font-weight: 400;
}
.math-page .pagenav a.current {
  color: var(--ink);
  background: var(--card);
  border-color: var(--warm);
}
.math-page .hero {
  display: block;
  max-width: 1248px;
  min-height: 0;
  margin: 0 auto;
  padding: 48px 24px 32px;
  text-align: left;
  background: transparent;
}
.math-page .hero .sub {
  margin-bottom: 16px;
  color: var(--warm);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  opacity: 1;
}
.math-page .hero h1 { font-size: clamp(32px, 4vw, 52px); line-height: 1.2; letter-spacing: -.04em; }
.math-page .hero .lead { margin: 20px 0 0; max-width: 760px; color: var(--muted); font-size: 18px; }
.math-page main { max-width: 1248px; padding: 0 24px 40px; }
.math-page main > p, .math-page main > ul, .math-page main > ol { max-width: 850px; }
.math-page main h2 { margin-top: 48px; padding-bottom: 14px; border-bottom: 1px solid var(--line); font-size: clamp(23px, 3vw, 30px); letter-spacing: -.02em; }
.math-page main h3 { color: var(--ink); }
.math-page .tocbox, .math-page .keyfig, .math-page .card { border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.math-page .tocbox { margin-top: 24px; }
.math-page .card .ct { color: var(--ink); }
.math-page .nd, .math-page .vp, .math-page .kg, .math-page .cn,
.math-page .nd-big, .math-page .ndebe {
  font-family: var(--face);
  font-weight: var(--weight);
  font-synthesis: none;
}
.math-page .hero .nd-big { margin: 24px 0; color: var(--warm); }
.math-page .scroll { max-width: 100%; }
.math-page table { min-width: 0; width: 100%; }
.math-page th, .math-page td { padding: 12px 14px; }
.math-page .equations { margin: 24px 0; }
.math-page footer { background: var(--paper); }
@media (max-width: 600px) {
  .math-page .hero { padding: 32px 20px 24px; }
  .math-page main { padding-inline: 20px; }
  .math-page .pagenav { padding-inline: 20px; gap: 6px; }
  .math-page .pagenav a { font-size: 13px; padding: 7px 12px; }
  .math-page th, .math-page td { padding: 8px; }
  .math-page .prevnext { flex-wrap: wrap; }
}

/* Isolate flag components without making them look like complete digit strings. */
.math-page .flag-example {
  margin: 20px 0;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
}
.math-page .flag-equation {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 54px;
  font-size: 18px;
}
.math-page .flag-equation .nd { font-size: 42px; }
.math-page .flag-example figcaption { max-width: 760px; margin-top: 12px; font-size: 14px; color: var(--muted); }
.math-page .flag-glyph { display: inline-block; margin-inline: 4px; }
.math-page .flag-zero { font: 14px var(--latin-font); color: var(--muted); }
@media (max-width: 600px) {
  .math-page .flag-example { padding: 16px; }
  .math-page .flag-equation { font-size: 16px; gap: 8px; }
}
.math-page .body-legend { color: var(--muted); font-size: 14px; margin: 20px 0; }
.math-page .body-legend .body-placeholder { font-size: 32px; vertical-align: middle; }
.math-page .body-placeholder { margin-inline: 6px; }

/* Equations retain their operators; commentary and body counts remain in Noto Sans. */
.math-page .math-expression { display: inline-block; white-space: nowrap; font-size: 32px; line-height: 1.6; vertical-align: middle; }
.math-page .native-calculation { display: inline; }
.math-page .native-calculation .math-expression { font-size: 28px; }
.math-page .math-note, .math-page .body-count { font: 14px var(--latin-font); white-space: normal; }
.math-page .decimal-note { color: var(--muted); font: 12px var(--latin-font); }
.math-page .codeblock .g { min-width: 240px; white-space: normal; }
.math-page .codeblock .c { white-space: normal; overflow-wrap: anywhere; }
.math-page .codeblock hr { border: 0; border-top: 1px solid var(--line); }
@media (max-width: 600px) {
  .math-page .codeblock, .math-page .codeblock tbody, .math-page .codeblock tr, .math-page .codeblock td { display: block; width: auto; }
  .math-page .codeblock .g { min-width: 0; border-left: 0; padding-top: 0; }
  .math-page .codeblock tr { border-bottom: 1px solid var(--line); }
  .math-page .codeblock td { border: 0; }
}

.math-page .component-breakdown { display: inline-flex; align-items: center; gap: 8px; margin-inline-start: 12px; flex-wrap: wrap; }
.math-page .component-change { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.math-page .component-transition .flag-equation { column-gap: 32px; }

.math-page .flag-placeholder { font-size: 32px; vertical-align: middle; }