/* Math Citizen — the product page and its privacy policy, on top of the
   shared sheet (../assets/styles.css).
   Every class is prefixed mc- so nothing here can reach another page. The
   site's own tokens (--text, --muted, --accent, --hairline...) carry the
   layout; the app's palette arrives as mc- tokens below, declared in the same
   four places styles.css declares its own so the theme toggle (data-theme on
   <html>) and prefers-color-scheme both keep working.
   No inline styles anywhere: the site's Content-Security-Policy is
   style-src 'self'.

   Contrast: Volt #C8FF3D is ~1.3:1 on paper, so in light mode it is only
   ever a fill or a rule, never text. The --mc-*-text tokens are the darker
   grades used where an accent colours words on the page ground. The hero is
   an ink panel in both themes, as the app is dark-first; the raw accents
   read on it (Volt ~15:1, Iris ~5.6:1, Ember ~6:1 on #0B0C17). */

:root {
  --mc-ink: #0B0C17;
  --mc-surface: #15172A;
  --mc-rule: #262A45;
  --mc-paper: #F4F5FF;
  --mc-dim: #8A8FB3;
  --mc-volt: #C8FF3D;
  --mc-iris: #8B7CFF;
  --mc-ember: #FF6B5B;

  /* accent text on the page ground: light grades */
  --mc-volt-text: #3D5A00;
  --mc-iris-text: #4F3FCB;
  --mc-ember-text: #B42F20;
  --mc-card: #FFFFFF;
  --mc-chip: rgba(139, 124, 255, .10);
}
@media (prefers-color-scheme: dark) {
  :root {
    --mc-volt-text: #C8FF3D;
    --mc-iris-text: #A99DFF;
    --mc-ember-text: #FF8A7D;
    --mc-card: rgba(11, 12, 23, .55);
    --mc-chip: rgba(139, 124, 255, .16);
  }
}
:root[data-theme="light"] {
  --mc-volt-text: #3D5A00; --mc-iris-text: #4F3FCB; --mc-ember-text: #B42F20;
  --mc-card: #FFFFFF; --mc-chip: rgba(139, 124, 255, .10);
}
:root[data-theme="dark"] {
  --mc-volt-text: #C8FF3D; --mc-iris-text: #A99DFF; --mc-ember-text: #FF8A7D;
  --mc-card: rgba(11, 12, 23, .55); --mc-chip: rgba(139, 124, 255, .16);
}

/* A filename, an equation or a bundle ID inside a sentence. The shared .mono
   class is the uppercase label style, which would turn x into X. */
.mc-code {
  font-family: "Company31 Mono", "Spline Sans Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: .92em;
  color: var(--text);
  white-space: nowrap;
}

/* --- hero: an ink panel, the app's own ground ------------------------- */

.mc-hero { padding-block: clamp(1.25rem, 3vw, 2rem); }

.mc-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  background-color: var(--mc-ink);
  /* the site's cutting mat, redrawn in the app's hairline colour */
  background-image:
    linear-gradient(to right, rgba(38, 42, 69, .9) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 42, 69, .9) 1px, transparent 1px),
    linear-gradient(to right, rgba(38, 42, 69, .4) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 42, 69, .4) 1px, transparent 1px);
  background-size: 130px 130px, 130px 130px, 26px 26px, 26px 26px;
  border: 1px solid var(--mc-rule);
  border-radius: 18px;
  padding: clamp(1.6rem, 5vw, 3.6rem);
  color: var(--mc-paper);
}

.mc-icon {
  display: block;
  width: 64px; height: 64px;
  border-radius: 15px;
  border: 1px solid var(--mc-rule);
  margin-bottom: 1.3rem;
}

.mc-panel .label { color: var(--mc-volt); margin-bottom: 1rem; }

.mc-panel h1 {
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -.03em;
  margin: .4rem 0 1.3rem;
  color: var(--mc-paper);
}

.mc-volt { color: var(--mc-volt); }

.mc-panel .lede {
  max-width: 36rem;
  font-size: 1.12rem;
  line-height: 1.6;
  color: rgba(244, 245, 255, .78);
}
.mc-panel .lede strong { color: var(--mc-paper); font-weight: 600; }

.mc-panel .ctas { margin-top: 1.8rem; gap: 1rem 1.4rem; }

.mc-panel .btn { background: var(--mc-volt); color: var(--mc-ink); }
.mc-panel .btn::after { background: linear-gradient(92deg, #C8FF3D, #E6FFA6); }
.mc-panel .btn:focus-visible { outline-color: var(--mc-volt); }

.mc-soon {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--mc-paper);
}
.mc-soon i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--mc-volt);
  animation: livepulse 2.4s ease-in-out infinite;
}

.mc-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.4rem;
  margin: 1.6rem 0 0;
  padding: 1rem 0 0;
  list-style: none;
  border-top: 1px solid var(--mc-rule);
}
.mc-platforms li {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mc-dim);
}

.mc-panel .mc-noscript { margin-top: 1rem; font-size: .95rem; color: var(--mc-dim); }

/* The figure on the right: a puzzle card as the app draws one. Plain HTML,
   so it inherits nothing it should not and needs no image. */
.mc-card {
  background: var(--mc-surface);
  border: 1px solid var(--mc-rule);
  border-radius: 22px;
  padding: 1.3rem 1.3rem 1.4rem;
  max-width: 340px;
  width: 100%;
  margin-inline: auto;
  box-shadow: 0 30px 60px rgba(0, 0, 0, .35);
}

.mc-cardtop {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .8rem;
}

.mc-cap {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-weight: 500;
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mc-dim);
}
.mc-cap-iris { color: var(--mc-iris); }
.mc-cap-volt { color: var(--mc-volt); }

.mc-lives { display: flex; gap: .3rem; }
.mc-lives i { width: 9px; height: 9px; border-radius: 50%; background: var(--mc-ember); }
.mc-lives i.mc-lost { background: transparent; border: 1.5px solid var(--mc-ember); opacity: .6; }

.mc-sum {
  margin: 1.5rem 0 1.3rem;
  text-align: center;
  font-family: "Company31 Sans", "Bricolage Grotesque", sans-serif;
  font-weight: 800;
  font-size: clamp(2.6rem, 6vw, 3.4rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--mc-paper);
  white-space: nowrap;
}
.mc-box {
  display: inline-block;
  width: .82em; height: .9em;
  border: 3px solid var(--mc-volt);
  border-radius: .16em;
  vertical-align: -.08em;
}

.mc-story {
  font-size: .92rem;
  line-height: 1.55;
  color: rgba(244, 245, 255, .74);
  border-left: 2px solid var(--mc-iris);
  padding-left: .8rem;
}

.mc-keys {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .45rem;
  margin-top: 1.2rem;
}
.mc-keys span {
  display: flex; align-items: center; justify-content: center;
  height: 2.4rem;
  border-radius: 12px;
  background: var(--mc-ink);
  border: 1px solid var(--mc-rule);
  font-family: "Company31 Sans", "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--mc-paper);
}
.mc-keys .mc-pick { background: var(--mc-volt); color: var(--mc-ink); border-color: var(--mc-volt); }

.mc-xp { margin-top: 1.2rem; }
.mc-xprow { display: flex; justify-content: space-between; gap: .8rem; margin-bottom: .45rem; }
.mc-bar { height: 6px; border-radius: 99px; background: var(--mc-rule); overflow: hidden; }
.mc-bar span { display: block; height: 100%; width: 64%; border-radius: 99px; background: var(--mc-iris); }

/* --- getting it ------------------------------------------------------- */

.mc-getgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 1.25rem;
  max-width: 46rem;
  margin-top: 1.4rem;
}

.mc-get {
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.6rem;
  background: var(--ground);
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.mc-get h3 { font-size: 1.2rem; letter-spacing: -.01em; }
.mc-get p { font-size: .95rem; line-height: 1.65; color: var(--muted); margin: 0; }
.mc-get .mc-req { color: var(--accent); font-size: .72rem; line-height: 1.8; }
.mc-get .btn { align-self: flex-start; margin-top: .4rem; }

/* --- columns of prose ------------------------------------------------- */

.mc-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1.6rem 2.2rem;
  margin-top: 1.4rem;
}
.mc-cols > div { border-top: 1px solid var(--hairline); padding-top: 1rem; }
.mc-cols h3 { font-size: 1.05rem; letter-spacing: -.005em; margin-bottom: .45rem; }
.mc-cols p { font-size: .95rem; line-height: 1.65; color: var(--muted); margin: 0; }
.mc-cols .mc-step {
  display: block;
  margin-bottom: .55rem;
  color: var(--mc-iris-text);
}

.mc-list { margin: .6rem 0 0; padding-left: 1.1rem; }
.mc-list li { font-size: .95rem; line-height: 1.7; color: var(--muted); }
.mc-list li::marker { color: var(--mc-iris-text); }

/* The adaptive start: ages across, where each starts. */
.mc-ages {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--hairline);
  border-radius: 14px;
  overflow: hidden;
}
.mc-ages li {
  padding: 1rem 1.1rem 1.1rem;
  border-left: 1px solid var(--hairline);
  background: var(--mc-card);
}
.mc-ages li:first-child { border-left: 0; }
.mc-ages .mc-cap { display: block; color: var(--mc-iris-text); margin-bottom: .35rem; }
.mc-ages b {
  display: block;
  font-family: "Company31 Sans", "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -.01em;
  color: var(--text);
}
.mc-ages span.mc-what { display: block; margin-top: .2rem; font-size: .9rem; line-height: 1.5; color: var(--muted); }

/* --- the challenge engine --------------------------------------------- */

.mc-split {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.4rem;
}
.mc-tile {
  border: 1px solid var(--card-border);
  border-top: 3px solid var(--mc-volt);
  border-radius: 14px;
  padding: 1.3rem 1.4rem 1.4rem;
  background: var(--mc-card);
}
.mc-tile-iris { border-top-color: var(--mc-iris); }
.mc-tile-dim { border-top-color: var(--line); }
.mc-tile .mc-cap { display: block; margin-bottom: .6rem; color: var(--mc-volt-text); }
.mc-tile-iris .mc-cap { color: var(--mc-iris-text); }
.mc-tile-dim .mc-cap { color: var(--accent); }
.mc-tile h3 { font-size: 1.1rem; letter-spacing: -.01em; margin-bottom: .45rem; }
.mc-tile p { font-size: .95rem; line-height: 1.65; color: var(--muted); }

.mc-kinds {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.mc-kinds li {
  font-size: .9rem;
  line-height: 1.3;
  color: var(--text);
  background: var(--mc-chip);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: .4rem .85rem;
}
.mc-kinds li.mc-cap { color: var(--accent); background: none; border: 0; padding: .4rem .4rem .4rem 0; font-size: .68rem; align-self: center; }

/* --- modes ------------------------------------------------------------ */

.mc-modes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.4rem;
}
.mc-mode {
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.4rem 1.4rem 1.5rem;
  background: var(--mc-card);
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.mc-mode .mc-big {
  font-family: "Company31 Sans", "Bricolage Grotesque", sans-serif;
  font-weight: 800;
  font-size: clamp(2.2rem, 4vw, 2.8rem);
  line-height: 1;
  letter-spacing: -.03em;
}
.mc-mode-climb .mc-big { color: var(--mc-volt-text); }
.mc-mode-daily .mc-big { color: var(--mc-iris-text); }
.mc-mode-sprint .mc-big { color: var(--mc-ember-text); }
.mc-mode .mc-unit { color: var(--muted); display: block; }
.mc-mode h3 { font-size: 1.25rem; letter-spacing: -.01em; margin-top: .5rem; }
.mc-mode p { font-size: .95rem; line-height: 1.65; color: var(--muted); }
.mc-mode-rule { height: 3px; border-radius: 99px; margin-top: auto; }
.mc-mode-climb .mc-mode-rule { background: var(--mc-volt); }
.mc-mode-daily .mc-mode-rule { background: var(--mc-iris); }
.mc-mode-sprint .mc-mode-rule { background: var(--mc-ember); }

/* --- ranks and badges ------------------------------------------------- */

.mc-ranks {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem .35rem;
  counter-reset: rank;
}
.mc-ranks li {
  counter-increment: rank;
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  font-family: "Company31 Sans", "Bricolage Grotesque", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: .4rem .9rem .42rem .75rem;
  background: var(--mc-card);
}
.mc-ranks li::before {
  content: counter(rank, decimal-leading-zero);
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-weight: 500;
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--mc-iris-text);
}
.mc-ranks li:first-child { border-color: var(--line); }
.mc-ranks li:last-child { background: var(--mc-ink); color: var(--mc-volt); border-color: var(--mc-ink); }
.mc-ranks li:last-child::before { color: var(--mc-volt); }

.mc-badges {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.mc-badges li {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .92rem;
  color: var(--text);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: .38rem .75rem;
  background: var(--mc-card);
}
.mc-badges li::before {
  content: "";
  width: 8px; height: 8px;
  flex: none;
  transform: rotate(45deg);
  background: var(--mc-iris);
}
.mc-badges li:nth-child(3n+2)::before { background: var(--mc-volt); outline: 1px solid rgba(11, 12, 23, .25); }
.mc-badges li:nth-child(3n)::before { background: var(--mc-ember); }

/* --- screenshots ------------------------------------------------------ */

.mc-shots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
  max-width: 880px;
  margin-top: 1.4rem;
  align-items: start;
}
.mc-shot {
  margin: 0;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  overflow: hidden;
  background: var(--mc-ink);
}
.mc-shot img { display: block; width: 100%; height: auto; }
.mc-shot figcaption {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--ground);
  padding: .7rem .9rem;
  border-top: 1px solid var(--hairline);
}

/* --- privacy ---------------------------------------------------------- */

.mc-privacy {
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--mc-volt);
  border-radius: 12px;
  padding: 1.5rem 1.6rem;
  margin-top: 1.4rem;
  background: var(--mc-card);
}
.mc-privacy p { font-size: .96rem; line-height: 1.7; color: var(--muted); margin: 0 0 .8rem; }
.mc-privacy p:last-child { margin-bottom: 0; }
.mc-privacy strong { color: var(--text); font-weight: 600; }

.mc-nots {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}
.mc-nots li {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-weight: 500;
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .35rem .75rem;
}
.mc-nots li.mc-label-dnc { background: var(--mc-ink); color: var(--mc-volt); border-color: var(--mc-ink); }

/* --- requirements and support ---------------------------------------- */

.mc-contact { margin: 1.2rem 0 0; }
.mc-contact dt {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 1rem;
}
.mc-contact dd { margin: .25rem 0 0; font-size: .96rem; line-height: 1.6; color: var(--muted); }
.mc-contact dd strong { color: var(--text); font-weight: 600; }

.mc-reqs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 0 2rem;
  margin: 1.2rem 0 0;
}
.mc-reqs > div { border-top: 1px solid var(--hairline); padding: .9rem 0 1rem; }
.mc-reqs dt {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}
.mc-reqs dd { margin: .35rem 0 0; font-size: .96rem; line-height: 1.6; color: var(--muted); }
.mc-reqs dd strong {
  display: block;
  font-family: "Company31 Sans", "Bricolage Grotesque", sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: .15rem;
}

.mc-supportlede { max-width: 40rem; font-size: 1.05rem; line-height: 1.65; color: var(--muted); }

/* --- the policy page -------------------------------------------------- */

/* Left-aligned under the hero, at a reading measure. */
.mc-policy > * { max-width: 46rem; }
.mc-policy h2 { margin: 2.4rem 0 .8rem; font-size: clamp(1.15rem, 2.2vw, 1.4rem); letter-spacing: -.01em; }
.mc-policy h2:first-child { margin-top: 0; }
.mc-policy h3 { margin: 1.6rem 0 .5rem; font-size: 1rem; }
.mc-policy p, .mc-policy li { font-size: .97rem; line-height: 1.75; color: var(--muted); }
.mc-policy p { margin: 0 0 .9rem; }
.mc-policy ul { margin: 0 0 1rem; padding-left: 1.15rem; }
.mc-policy li::marker { color: var(--mc-iris-text); }
.mc-policy strong { color: var(--text); font-weight: 600; }

.mc-updated {
  font-family: "Company31 Mono", "Spline Sans Mono", monospace;
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}

.mc-policyhero .lede { max-width: 40rem; font-size: 1.1rem; line-height: 1.6; color: var(--muted); }
.mc-policyhero h1 { font-size: clamp(2.1rem, 5vw, 3.2rem); line-height: 1.05; letter-spacing: -.02em; margin: .4rem 0 1rem; }
.mc-policyhero .mc-updated { margin-top: 1.2rem; }

.mc-tablewrap { overflow-x: auto; margin: .6rem 0 1.4rem; }
.mc-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.mc-table caption { text-align: left; color: var(--muted); font-size: .9rem; padding-bottom: .6rem; }
.mc-table th, .mc-table td { text-align: left; vertical-align: top; padding: .7rem .8rem; border-bottom: 1px solid var(--hairline); }
.mc-table th { color: var(--text); font-weight: 600; }
.mc-table td { color: var(--muted); line-height: 1.6; }
.mc-table td:first-child { color: var(--text); white-space: nowrap; }

/* --- narrow screens --------------------------------------------------- */

@media (max-width: 960px) {
  .mc-split, .mc-modes { grid-template-columns: 1fr; }
  .mc-mode-rule { margin-top: .6rem; }
}

@media (max-width: 860px) {
  .mc-panel { grid-template-columns: 1fr; }
  .mc-card { max-width: 320px; }
  .mc-shots { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
}

@media (max-width: 640px) {
  .mc-hero .wrap { padding-inline: 1rem; }
  .mc-panel { border-radius: 14px; padding: 1.6rem 1.25rem 1.5rem; }
  .mc-ages { grid-template-columns: 1fr; }
  .mc-ages li { border-left: 0; border-top: 1px solid var(--hairline); }
  .mc-ages li:first-child { border-top: 0; }
  /* On a phone the three screens sit side by side and scroll sideways inside
     their own row, so the page itself never scrolls horizontally. */
  .mc-shots {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 64%;
    gap: .8rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    overscroll-behavior-x: contain;
    padding-bottom: .6rem;
  }
  .mc-shot { scroll-snap-align: start; }
  .figcap + .mc-cols > div:first-child { border-top: 0; padding-top: 0; }
  .mc-privacy { padding: 1.25rem 1.2rem; }
  .mc-table th, .mc-table td { padding: .6rem .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .mc-soon i { animation: none; }
}
html.a11y-motion .mc-soon i { animation: none; }

/* The privacy page's header link reads "Math Citizen", longer than the
   site's usual "Home"; at phone widths the header gaps close up so it fits
   beside the two round buttons without pushing the page sideways. */
@media (max-width: 420px) {
  .hrow { gap: .6rem; }
  .hnav { gap: .6rem; }
}
@media (max-width: 359px) {
  .brand span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
}

/* Apple's badge, unmodified: at least 40px tall with clear space of a quarter of its height. */
.mc-badge { display: inline-block; line-height: 0; padding: 0 12px 12px 0; }
.mc-badge img { height: 48px; width: auto; display: block; }
.mc-get .mc-badge { align-self: flex-start; margin-top: .4rem; }
.mc-credit { margin-top: .5rem; font-size: .72rem; }