@font-face {
  font-family: "Onest";
  src: url("/static/fonts/onest-400-cyrillic.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: "Onest";
  src: url("/static/fonts/onest-400-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
    U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122,
    U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Onest";
  src: url("/static/fonts/onest-600-cyrillic.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: "Onest";
  src: url("/static/fonts/onest-600-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
    U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122,
    U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("/static/fonts/jetbrains-mono-400-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
    U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122,
    U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --page: #F4F6F8;
  --surface: #FFFFFF;
  --ink: #172B3A;
  --muted: #62717D;
  --line: #DDE4E9;
  --accent: #167861;
  --content-width: 1100px;
  color-scheme: light;
  font-family: "Onest", Arial, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 0;
  background: var(--page);
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  background: var(--page);
  color: var(--ink);
  font: 400 16px/1.55 "Onest", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
summary:focus-visible,
.table-scroll:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

code,
pre,
.score,
.rank,
.challenge-summary dd,
.run-metrics dd {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

code {
  overflow-wrap: anywhere;
  font-size: 0.92em;
}

h1,
h2,
p,
dl,
dd {
  margin-top: 0;
}

h1,
h2 {
  color: var(--ink);
  font-weight: 600;
}

h1 {
  margin-bottom: 8px;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h2 {
  margin-bottom: 4px;
  font-size: 1.125rem;
  line-height: 1.3;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.site-header__inner {
  display: flex;
  width: min(100%, var(--content-width));
  min-height: 56px;
  margin: 0 auto;
  padding: 0 24px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-name,
.github-link {
  color: var(--ink);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.site-name {
  letter-spacing: -0.01em;
}

.github-link {
  padding: 4px 0 3px;
  border-bottom: 2px solid var(--accent);
}

.wrap {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: 28px 24px 64px;
}

.challenge-nav {
  display: flex;
  max-width: 100%;
  margin: 0 0 32px;
  overflow-x: auto;
  overflow-y: hidden;
  border-bottom: 1px solid var(--line);
  gap: 4px;
  scrollbar-width: thin;
}

.challenge-nav__link {
  flex: 0 0 auto;
  margin-bottom: -1px;
  padding: 10px 14px 11px;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
  white-space: nowrap;
}

.challenge-nav__link:hover {
  color: var(--ink);
}

.challenge-nav__link--current {
  border-bottom-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.version-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: -12px 0 24px;
  font-size: 0.8125rem;
}

.version-nav a {
  color: var(--muted);
  text-decoration: none;
}

.version-nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

.archive-note {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.875rem;
}

.page-heading {
  display: grid;
  margin-bottom: 34px;
  grid-template-columns: minmax(220px, 1fr) minmax(520px, 1.6fr);
  align-items: end;
  gap: 36px;
}

.page-heading > div > p,
.run-heading p,
.section-heading p,
.table-hint {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.challenge-summary,
.run-metrics {
  display: grid;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.challenge-summary {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.challenge-summary > div,
.run-metrics > div {
  min-width: 0;
  padding: 12px 14px;
  border-left: 1px solid var(--line);
}

.challenge-summary > div:first-child,
.run-metrics > div:first-child {
  border-left: 0;
}

.challenge-summary dt,
.run-metrics dt {
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
}

.challenge-summary dd {
  margin-bottom: 0;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 0.8125rem;
}

.results,
.attempts {
  margin-top: 0;
}

.section-heading {
  display: flex;
  margin-bottom: 12px;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.queue-state {
  flex: 0 0 auto;
  margin: 0;
  color: var(--muted);
  font-size: 0.8125rem;
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--surface);
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.results-table,
.attempts-table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

.results-table {
  min-width: 720px;
}

.attempts-table {
  min-width: 560px;
}

.results-table th,
.results-table td,
.attempts-table th,
.attempts-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.results-table thead th,
.attempts-table thead th {
  background: var(--page);
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.results-table tbody tr:last-child > *,
.attempts-table tbody tr:last-child > * {
  border-bottom: 0;
}

.rank {
  width: 64px;
  color: var(--muted);
  text-align: center !important;
  font-size: 0.8125rem;
}

.score {
  width: 132px;
  color: var(--ink);
  text-align: right !important;
  white-space: nowrap;
}

.results-table tbody .score {
  font-size: 1rem;
}

.tries {
  width: 184px;
  color: var(--muted);
  font-size: 0.8125rem;
  text-align: right !important;
  white-space: nowrap;
}

.result-row:hover > *,
.attempt-row:hover > * {
  background: var(--page);
}

.who {
  color: var(--ink);
  font-weight: 600;
  text-decoration-color: var(--line);
  text-decoration-thickness: 1px;
}

.who:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.reference-row > * {
  background: var(--surface);
  border-top: 2px solid var(--line);
}

.reference-row th[scope="row"] {
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 400;
}

.reference-label {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.reference-row--ceiling .reference-label {
  color: var(--accent);
}

.empty {
  padding: 28px 16px !important;
  color: var(--muted);
  font-size: 0.875rem;
  text-align: center !important;
}

.table-hint {
  margin: 10px 0 0;
}

.how {
  margin-top: 34px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.how summary {
  padding: 15px 18px;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 600;
}

.how[open] summary {
  border-bottom: 1px solid var(--line);
}

.how__body {
  padding: 18px;
}

.steps {
  margin: 0;
  padding-left: 24px;
}

.steps li {
  margin-bottom: 18px;
  padding-left: 5px;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.steps li:last-child {
  margin-bottom: 0;
}

.steps li::marker {
  color: var(--accent);
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

.steps strong {
  color: var(--ink);
  font-weight: 600;
}

pre {
  max-width: 100%;
  margin: 9px 0 0;
  padding: 12px 14px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--page);
  color: var(--ink);
  font: 400 0.8125rem/1.55 "JetBrains Mono", ui-monospace, SFMono-Regular,
    Consolas, monospace;
  tab-size: 2;
}

pre code {
  font: inherit;
}

.how__limits {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8125rem;
}

.back {
  display: inline-block;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
}

.back:hover {
  color: var(--accent);
  text-decoration: underline;
}

.run-heading {
  display: flex;
  margin-bottom: 22px;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
}

.run-heading > div {
  min-width: 0;
}

.run-heading p {
  overflow-wrap: anywhere;
}

.status {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}

.status--running,
.status--accepted {
  border-color: var(--accent);
  color: var(--accent);
}

.status--failed {
  border-color: var(--line);
  color: var(--ink);
}

.run-metrics {
  margin-bottom: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.run-metrics dd {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1.25;
  white-space: nowrap;
}

.run-metrics dd span {
  color: var(--muted);
  font: 400 0.75rem/1.4 "Onest", Arial, sans-serif;
}

.run-note {
  margin: 0 0 30px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.run-note--failed {
  border-color: var(--line);
}

.run-note h2 {
  font-size: 0.9375rem;
}

.run-note p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}

.attempts {
  margin-top: 30px;
}

.attempts-table th:last-child,
.attempts-table td:last-child {
  width: 180px;
}

.attempt-status {
  color: var(--muted);
  font-size: 0.8125rem;
  white-space: nowrap;
}

.attempt-status--accepted,
.attempt-status--running {
  color: var(--accent);
}

.attempt-status--failed {
  color: var(--ink);
}

.current-run {
  display: inline-block;
  margin-left: 9px;
  color: var(--accent);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 900px) {
  .page-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 18px;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    min-height: 52px;
    padding: 0 16px;
  }

  .wrap {
    padding: 22px 16px 48px;
  }

  .challenge-nav {
    margin-bottom: 26px;
  }

  .challenge-nav__link {
    padding-inline: 10px;
  }

  .page-heading {
    margin-bottom: 28px;
  }

  .challenge-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .challenge-summary > div:nth-child(3) {
    border-left: 0;
  }

  .challenge-summary > div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .section-heading,
  .run-heading {
    align-items: start;
    flex-direction: column;
    gap: 10px;
  }

  .queue-state {
    flex-basis: auto;
  }

  .run-metrics {
    grid-template-columns: 1fr;
  }

  .run-metrics > div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .run-metrics > div:first-child {
    border-top: 0;
  }

  .how__body,
  .how summary {
    padding-inline: 14px;
  }
}