/* MSK42DAO public site. Self-hosted Inter for Latin; CJK uses the device font. */

@font-face {
  font-family: "MSK Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-400.dea57cce12.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2190-2193, U+2212, U+2215;
}

@font-face {
  font-family: "MSK Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-600.4d8d7329c0.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2190-2193, U+2212, U+2215;
}

:root {
  --ink: #241416;
  --muted: #4e3b3e;
  --maroon: #4a0e18;
  --maroon-mid: #6e1423;
  --gold-text: #5c4714;
  --gold-line: #8a6d2f;
  --gold-soft: #f3d48a;
  --paper: #f7f3eb;
  --paper-2: #fffdf9;
  --line: #e3d5c2;
  --focus: #4a0e18;
  --wrap: 72rem;
  --font: "MSK Sans", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html:focus-within {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.125rem;
  line-height: 1.6;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1,
h2,
h3,
strong,
.nav-list a,
.btn,
summary,
.track-code,
.footer-heading,
.answer-label,
.kicker,
dt {
  font-weight: 600;
}

h1,
h2,
h3 {
  line-height: 1.25;
  text-wrap: balance;
}

h1 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(2rem, 4.2vw, 3.35rem);
  letter-spacing: -0.02em;
}

h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.45rem, 2.4vw, 1.85rem);
}

h3 {
  margin: 0 0 0.25rem;
  font-size: 1.2rem;
}

p,
ul,
ol,
dl,
.answer {
  margin: 0 0 1rem;
}

ul,
ol {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

a {
  color: var(--maroon-mid);
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--maroon);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: 0.75rem;
  transform: translateY(-160%);
  background: var(--paper-2);
  color: var(--ink);
  padding: 0.6rem 0.9rem;
  z-index: 10;
  border: 2px solid var(--maroon);
}

.skip-link:focus {
  transform: none;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2rem));
  margin-inline: auto;
}

.emergency {
  background: var(--maroon);
  color: #fffdf9;
  text-align: center;
  padding: 0.65rem 1rem;
}

.emergency p {
  margin: 0;
}

.emergency a {
  color: #3a270c;
  background: var(--gold-soft);
  text-decoration: underline;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  margin-inline: 0.25rem;
}

.emergency :focus-visible {
  outline-color: #fffdf9;
}

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

.header-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.75rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
  min-height: 44px;
  margin-right: auto;
}

.brand img {
  width: 48px;
  height: 48px;
}

.header-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.75rem;
}

.langs {
  display: flex;
  gap: 0.25rem;
}

.langs a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 0.45rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.langs a[aria-current="true"] {
  border-bottom-color: var(--gold-line);
  font-weight: 600;
}

.langs a:hover {
  text-decoration: underline;
}

.nav-details {
  flex-basis: 100%;
}

.nav-details > summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.4rem 0.9rem;
  border: 2px solid var(--maroon);
  border-radius: 999px;
  background: var(--paper-2);
}

.nav-details > summary::-webkit-details-marker {
  display: none;
}

.menu-close {
  display: none;
}

.nav-details[open] .menu-open {
  display: none;
}

.nav-details[open] .menu-close {
  display: inline;
}

.nav-list {
  list-style: none;
  padding: 0.4rem 0 0.8rem;
  margin: 0;
  display: flex;
  flex-direction: column;
}

.nav-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0.2rem;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  border-bottom: 0;
}

.nav-list a[aria-current="page"] {
  font-weight: 600;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--gold-line);
}

@media (max-width: 63.99rem) {
  .nav-details:not([open]) .nav-list {
    display: none;
  }
}

@media (min-width: 64rem) {
  .nav-details > summary {
    display: none;
  }

  .nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.15rem 0.35rem;
    padding-top: 0;
  }
}

.page {
  padding: 1.5rem 0 3rem;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1rem;
}

.crumbs a {
  color: var(--maroon-mid);
}

.kicker {
  margin: 0;
  color: var(--gold-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.answer-label {
  margin: 0 0 0.3rem;
  color: var(--gold-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.answer .lede,
.lede {
  margin: 0;
  max-width: 68ch;
}

.hero {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  border: 2px solid var(--maroon);
  text-decoration: none;
  color: var(--maroon);
  background: transparent;
}

.btn-primary {
  background: var(--maroon);
  color: #fffdf9;
}

.btn-primary:hover {
  background: var(--maroon-mid);
  color: #fffdf9;
}

.btn-alert {
  background: var(--gold-soft);
  color: #3a270c;
  border-color: #3a270c;
}

.certificate {
  background: var(--paper-2);
  border: 1px solid var(--gold-line);
  box-shadow: inset 0 0 0 5px var(--paper-2), inset 0 0 0 6px #e6d3a4;
  padding: 1.1rem 1rem 1.25rem;
  text-align: center;
}

.certificate img {
  width: min(220px, 70%);
  margin: 0 auto 0.8rem;
}

.certificate p {
  margin: 0.35rem 0;
}

.sdg-strip {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.sdg-strip a {
  display: block;
}

.sdg-strip img,
.sdg-goal img {
  width: 100%;
  height: auto;
  display: block;
}

.sdg-list {
  display: grid;
  gap: 1.75rem;
  margin-top: 1.5rem;
}

.sdg-goal {
  display: grid;
  gap: 0.85rem;
  align-items: start;
}

.sdg-goal img {
  width: 7.5rem;
}

.sdg-disclaimer {
  max-width: 72ch;
}

.section {
  margin-top: 2.75rem;
}

.facts {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 1.75rem 0 0;
}

.facts div {
  background: var(--paper-2);
  padding: 0.9rem 1rem;
}

.facts dt {
  color: var(--gold-text);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.facts dd {
  margin: 0.2rem 0 0;
}

.meanings {
  display: grid;
  gap: 1rem;
}

.meanings article {
  background: var(--paper-2);
  border-top: 4px solid var(--maroon);
  padding: 1rem 1rem 0.4rem;
}

.term {
  margin: 0;
  font-size: 1.6rem;
  color: var(--maroon);
}

.paths {
  display: grid;
  gap: 1rem;
}

.paths article {
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--line);
}

.prose {
  max-width: 72ch;
}

.prose h2,
.stack h2 {
  margin-top: 2rem;
}

.tracks {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.tracks > li {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.35rem 0.8rem;
  padding: 0.95rem 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.tracks > li:last-child {
  border-bottom: 1px solid var(--line);
}

.track-code {
  color: var(--gold-text);
  font-variant-numeric: tabular-nums;
}

.note {
  max-width: 68ch;
  color: var(--ink);
}

.faq-item {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  max-width: 72ch;
}

.faq-item h2 {
  font-size: 1.28rem;
}

.official {
  margin-top: 1.5rem;
  padding: 0.9rem 1rem;
  background: var(--paper-2);
  border-left: 4px solid var(--gold-line);
  max-width: 72ch;
}

.official h2 {
  font-size: 1rem;
  margin: 0 0 0.4rem;
}

.related ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.updated {
  color: var(--muted);
  font-size: 1rem;
}

.site-footer {
  background: var(--maroon);
  color: #fffdf9;
  padding: 2rem 0 1.4rem;
}

.site-footer a {
  color: #fffdf9;
}

.site-footer :focus-visible {
  outline-color: var(--gold-soft);
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
}

.footer-heading {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-blurb,
.disclaimer,
.rights,
.operator-line {
  max-width: 62ch;
}

.disclaimer {
  font-size: 1rem;
  border-top: 1px solid rgba(255, 253, 249, 0.35);
  padding-top: 1rem;
  margin-top: 1.25rem;
}

.rights,
.operator-line {
  margin: 0.35rem 0;
}

.chooser {
  padding: 3rem 0 4rem;
}

.chooser-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
  max-width: 24rem;
}

.chooser-links a {
  min-height: 48px;
}

@media (min-width: 48rem) {
  .facts {
    grid-template-columns: 1fr 1fr;
  }

  .meanings,
  .paths {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 64rem) {
  .hero {
    grid-template-columns: minmax(0, 1.45fr) minmax(16rem, 0.72fr);
  }

  .facts {
    grid-template-columns: repeat(3, 1fr);
  }

  .sdg-strip {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .sdg-goal {
    grid-template-columns: 8.5rem 1fr;
  }

  .sdg-goal img {
    width: 100%;
  }

  .meanings {
    grid-template-columns: repeat(3, 1fr);
  }

  .paths {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.5fr 0.8fr 0.8fr;
  }
}

.contact-reveal {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  vertical-align: middle;
}

.reveal-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  border: 2px solid currentColor;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.reveal-btn:disabled {
  cursor: default;
  opacity: 0.72;
}

.reveal-live a {
  font-weight: 600;
}

.contact-fallback {
  display: block;
  height: auto;
  max-width: 100%;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

.site-footer .reveal-btn {
  color: #fffdf9;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media print {
  .emergency,
  .nav-details > summary,
  .header-tools .btn {
    display: none;
  }

  .nav-list {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .site-footer,
  .emergency {
    background: #fff;
    color: #000;
  }

  .site-footer a,
  a {
    color: #000;
  }
}