:root {
  color-scheme: light;
  --navy: #061a3b;
  --navy-soft: #102b55;
  --paper: #f7edd9;
  --paper-light: #fff8e9;
  --paper-deep: #ead9bc;
  --red: #d82722;
  --red-dark: #a51b18;
  --ink-muted: #526078;
  --line: rgba(6, 26, 59, 0.24);
  --line-strong: rgba(6, 26, 59, 0.72);
  --nra: #d82722;
  --wu: #b57d27;
  --sun: #7c5278;
  --fengtian: #4f708f;
  --guominjun: #5e7b67;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --content: 1380px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--navy);
  color: var(--navy);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

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

button {
  touch-action: manipulation;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: -9999px;
  background: var(--paper-light);
  color: var(--navy);
  padding: 10px 14px;
}

.skip-link:focus {
  left: 12px;
}

.site-bar {
  background: var(--navy);
  color: var(--paper);
}

.site-bar__inner {
  width: min(calc(100% - 48px), var(--content));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
  text-decoration: none;
  font: 700 28px / 1 var(--serif);
  letter-spacing: 0.08em;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: cover;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  color: var(--paper);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.site-nav a:first-child::before {
  content: "← ";
  color: var(--red);
}

.site-nav a:hover {
  text-decoration: underline;
  text-underline-offset: 6px;
}

main {
  background: var(--paper);
  overflow: hidden;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--red-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  min-height: 690px;
  background: var(--paper);
  border-bottom: 1px solid var(--line-strong);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 33%;
  height: 7px;
  background: var(--red);
}

.hero__cut {
  position: absolute;
  top: 0;
  right: 0;
  width: 28%;
  height: 100%;
  background: var(--navy);
  clip-path: polygon(45% 0, 100% 0, 100% 100%, 0 100%, 0 28%);
}

.hero__cut::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 88%;
  height: 34%;
  background: var(--red);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%, 0 38%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 48px), var(--content));
  min-height: 690px;
  margin: 0 auto;
  padding: 92px 0 84px;
  display: grid;
  grid-template-columns: 170px minmax(0, 750px) minmax(250px, 1fr);
  gap: 54px;
  align-items: start;
}

.hero__date {
  min-height: 320px;
  padding: 12px 22px 12px 0;
  border-right: 1px solid var(--line-strong);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--ink-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero__date time {
  color: var(--navy);
  font: 700 24px / 1 var(--serif);
  writing-mode: vertical-rl;
  letter-spacing: 0.08em;
}

.hero__copy h1 {
  margin: 0 0 34px;
  max-width: 760px;
  color: var(--navy);
  font: 700 clamp(58px, 6.6vw, 106px) / 0.98 var(--serif);
  letter-spacing: -0.05em;
}

.hero__copy h1 em {
  display: inline-block;
  margin-top: 8px;
  color: var(--red);
  font-style: normal;
  white-space: nowrap;
}

.hero__copy > p:not(.eyebrow) {
  max-width: 720px;
  margin: 16px 0 0;
  font-size: 17px;
}

.hero__copy .hero__lead {
  margin-top: 0;
  font: 700 27px / 1.5 var(--serif);
}

.hero__notice {
  max-width: 720px;
  margin-top: 28px;
  padding: 18px 20px;
  background: var(--paper-light);
  border-left: 5px solid var(--red);
}

.hero__notice h2 {
  margin: 0 0 6px;
  color: var(--red-dark);
  font: 800 13px / 1.4 var(--sans);
  letter-spacing: 0.08em;
}

.hero__notice p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 13px;
  line-height: 1.65;
}

.hero__brief {
  align-self: end;
  min-width: 0;
  margin-top: 120px;
  padding: 26px 24px;
  background: var(--paper-light);
  border-top: 7px solid var(--red);
  box-shadow: 0 18px 45px rgba(2, 15, 37, 0.2);
}

.hero__brief > p {
  margin: 0 0 14px;
  color: var(--red-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hero__brief ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero__brief li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.hero__brief li:first-child {
  border-top-color: var(--line-strong);
}

.hero__brief strong,
.hero__brief span {
  display: block;
}

.hero__brief strong {
  margin-bottom: 4px;
  font: 700 18px / 1.35 var(--serif);
}

.hero__brief span {
  color: var(--ink-muted);
  font-size: 13px;
  line-height: 1.6;
}

.map-section,
.forces-section,
.message-section,
.method-section {
  padding: 104px 0;
}

.map-section {
  background: var(--paper-light);
}

.section-heading,
.map-layout,
.force-list,
.message-flow,
.message-routes,
.method-section {
  width: min(calc(100% - 48px), var(--content));
  margin-inline: auto;
}

.section-heading {
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 560px);
  gap: 56px;
  align-items: end;
}

.section-heading h2,
.method-section h2,
.regions-section h2,
.closing h2 {
  margin: 0;
  font: 700 clamp(42px, 5vw, 74px) / 1.04 var(--serif);
  letter-spacing: -0.04em;
}

.section-intro {
  margin: 0 0 4px;
  padding-left: 24px;
  border-left: 4px solid var(--red);
  color: var(--ink-muted);
  font-size: 14px;
}

.map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 34px;
  align-items: start;
}

.map-frame {
  min-width: 0;
}

.map-toolbar {
  min-height: 58px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--navy);
}

.map-toolbar::before {
  content: "显示图层";
  margin: 0 10px 0 4px;
  color: rgba(247, 237, 217, 0.68);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.map-toolbar button {
  min-height: 44px;
  border: 1px solid rgba(247, 237, 217, 0.4);
  background: transparent;
  color: var(--paper);
  padding: 8px 14px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.map-toolbar button.is-active {
  background: var(--paper);
  color: var(--navy);
}

.map-scroll-hint {
  display: none;
}

.map-canvas {
  position: relative;
  overflow: hidden;
  background: #d8ccb4;
  border: 1px solid var(--navy);
  border-top: 0;
}

.map-canvas:focus-visible {
  outline: 4px solid var(--red);
  outline-offset: 4px;
}

.map-canvas > picture {
  display: block;
  width: 100%;
}

.map-canvas > picture img {
  width: 100%;
  height: auto;
  filter: saturate(0.58) contrast(0.92) sepia(0.16);
}

.map-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.layer {
  transition: opacity 180ms ease;
}

.map-canvas[data-hidden-layers~="forces"] .layer--forces,
.map-canvas[data-hidden-layers~="fronts"] .layer--fronts,
.map-canvas[data-hidden-layers~="routes"] .layer--routes {
  opacity: 0;
  pointer-events: none;
}

.zone {
  stroke-width: 8;
  vector-effect: non-scaling-stroke;
}

.zone--nra {
  fill: rgba(216, 39, 34, 0.28);
  stroke: var(--nra);
}

.zone--wu {
  fill: rgba(181, 125, 39, 0.27);
  stroke: var(--wu);
}

.zone--sun {
  fill: rgba(124, 82, 120, 0.25);
  stroke: var(--sun);
}

.zone--fengtian {
  fill: rgba(79, 112, 143, 0.27);
  stroke: var(--fengtian);
}

.zone--guominjun {
  fill: rgba(94, 123, 103, 0.27);
  stroke: var(--guominjun);
}

.zone--outline {
  fill: rgba(94, 123, 103, 0.08);
  stroke-dasharray: 16 12;
}

.zone--contested {
  fill: url("#contested");
  stroke: var(--red);
  stroke-dasharray: 17 12;
}

.front,
.route {
  fill: none;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.front {
  stroke-width: 8;
}

.front--nra {
  stroke: var(--red);
}

.front--nankou {
  stroke: var(--navy);
}

.front-label rect {
  fill: var(--paper-light);
  stroke: var(--navy);
  stroke-width: 3;
}

.front-label text {
  fill: var(--navy);
  font-size: 25px;
  font-weight: 800;
  text-anchor: middle;
}

.front-label--south rect {
  stroke: var(--red);
}

.front-label--south text {
  fill: var(--red-dark);
}

.route {
  stroke: var(--navy);
  stroke-width: 4;
  stroke-dasharray: 15 14;
  opacity: 0.78;
}

.route--sea {
  stroke: var(--red-dark);
}

.map-point circle {
  fill: var(--paper-light);
  stroke: var(--navy);
  stroke-width: 5;
  vector-effect: non-scaling-stroke;
}

.map-point text {
  fill: var(--navy);
  paint-order: stroke;
  stroke: var(--paper-light);
  stroke-width: 10px;
  stroke-linejoin: round;
  font-size: 28px;
  font-weight: 900;
}

.map-point--major circle {
  fill: var(--red);
  stroke: var(--paper-light);
}

.map-point--front circle {
  fill: var(--navy);
  stroke: var(--paper-light);
}

.map-credit {
  margin: 0;
  padding: 12px 16px;
  background: var(--paper-deep);
  color: var(--ink-muted);
  font-size: 11px;
}

.map-legend {
  padding: 28px 25px;
  background: var(--navy);
  color: var(--paper);
}

.map-legend__title {
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(247, 237, 217, 0.4);
  font: 700 22px / 1.2 var(--serif);
}

.map-legend ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.map-legend li {
  position: relative;
  padding: 14px 0 14px 31px;
  border-bottom: 1px solid rgba(247, 237, 217, 0.2);
}

.map-legend strong,
.map-legend small {
  display: block;
}

.map-legend strong {
  font-size: 14px;
}

.map-legend small {
  margin-top: 3px;
  color: rgba(247, 237, 217, 0.68);
  font-size: 11px;
  line-height: 1.6;
}

.legend-swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
}

.map-legend li > .legend-swatch {
  position: absolute;
  top: 18px;
  left: 0;
}

.legend-swatch--nra {
  color: var(--nra);
  background: rgba(216, 39, 34, 0.5);
}

.legend-swatch--wu {
  color: var(--wu);
  background: rgba(181, 125, 39, 0.5);
}

.legend-swatch--sun {
  color: var(--sun);
  background: rgba(124, 82, 120, 0.5);
}

.legend-swatch--fengtian {
  color: var(--fengtian);
  background: rgba(79, 112, 143, 0.5);
}

.legend-swatch--guominjun {
  color: var(--guominjun);
  background: rgba(94, 123, 103, 0.5);
}

.legend-swatch--contested {
  flex: 0 0 16px;
  color: var(--red);
  background: repeating-linear-gradient(32deg, rgba(216, 39, 34, 0.58) 0 4px, transparent 4px 8px);
}

.map-legend__note {
  margin-top: 22px;
  display: flex;
  gap: 12px;
}

.map-legend__note p {
  margin: -3px 0 0;
  color: rgba(247, 237, 217, 0.72);
  font-size: 11px;
  line-height: 1.55;
}

.map-legend__note strong {
  color: var(--paper);
}

.forces-section {
  background: var(--paper);
}

.force-list {
  border-top: 3px solid var(--navy);
}

.force {
  --force-color: var(--red);
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 2fr);
  gap: 56px;
  padding: 44px 0;
  border-bottom: 1px solid var(--line-strong);
}

.force--wu {
  --force-color: var(--wu);
}

.force--sun {
  --force-color: var(--sun);
}

.force--fengtian {
  --force-color: var(--fengtian);
}

.force--guominjun {
  --force-color: var(--guominjun);
}

.force header {
  position: relative;
  padding-left: 66px;
}

.force header > span {
  position: absolute;
  top: 3px;
  left: 0;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--force-color);
  color: white;
  font-size: 13px;
  font-weight: 800;
}

.force header p {
  margin: 0 0 3px;
  color: var(--force-color);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.force h3 {
  margin: 0;
  font: 700 clamp(25px, 2.4vw, 36px) / 1.18 var(--serif);
}

.force dl {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.force dl div {
  min-width: 0;
  padding: 0 24px;
  border-left: 1px solid var(--line);
}

.force dt {
  margin-bottom: 8px;
  color: var(--force-color);
  font-size: 12px;
  font-weight: 800;
}

.force dd {
  margin: 0;
  color: var(--ink-muted);
  font-size: 14px;
}

.regions-section {
  position: relative;
  min-height: 650px;
  padding: 105px max(24px, calc((100vw - var(--content)) / 2));
  overflow: hidden;
  background: var(--navy);
  color: var(--paper);
}

.regions-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34%;
  height: 9px;
  background: var(--red);
}

.regions-section__number {
  position: absolute;
  top: 40px;
  right: 2vw;
  color: rgba(247, 237, 217, 0.045);
  font: 700 min(34vw, 540px) / 1 var(--serif);
}

.regions-section__copy,
.regions-grid,
.regions-section__note {
  position: relative;
  z-index: 1;
}

.regions-section .eyebrow {
  color: #ff5b52;
}

.regions-section__copy {
  max-width: 820px;
}

.regions-section h2 {
  color: var(--paper);
}

.regions-section__lead {
  margin: 24px 0 0;
  color: white;
  font: 700 24px / 1.5 var(--serif);
}

.regions-grid {
  max-width: 1050px;
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(247, 237, 217, 0.45);
  border-left: 1px solid rgba(247, 237, 217, 0.45);
}

.regions-grid article {
  min-height: 200px;
  padding: 27px 28px;
  border-right: 1px solid rgba(247, 237, 217, 0.3);
  border-bottom: 1px solid rgba(247, 237, 217, 0.3);
}

.regions-grid span {
  color: #ff5b52;
  font-size: 12px;
  font-weight: 800;
}

.regions-grid h3 {
  margin: 16px 0 9px;
  font: 700 26px / 1.2 var(--serif);
}

.regions-grid p {
  margin: 0;
  color: rgba(247, 237, 217, 0.72);
  font-size: 13px;
}

.regions-section__note {
  max-width: 1050px;
  margin: 28px 0 0;
  color: rgba(247, 237, 217, 0.76);
  font-size: 14px;
}

.message-section {
  background: var(--paper-light);
}

.message-flow {
  display: grid;
  grid-template-columns: repeat(7, auto);
  align-items: center;
  border-top: 3px solid var(--navy);
  border-bottom: 1px solid var(--line-strong);
}

.message-flow article {
  width: min(240px, 18vw);
  min-height: 190px;
  padding: 28px 18px;
}

.message-flow article span {
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
}

.message-flow article p {
  margin: 34px 0 6px;
  font: 700 21px / 1.28 var(--serif);
}

.message-flow article small {
  display: block;
  color: var(--ink-muted);
  font-size: 11px;
  line-height: 1.6;
}

.message-flow i {
  color: var(--red);
  font: 400 28px / 1 var(--serif);
}

.message-routes {
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.message-routes p {
  margin: 0;
  padding: 16px 28px;
  border-left: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 13px;
}

.message-routes p:first-child {
  padding-left: 0;
  border-left: 0;
}

.message-routes strong {
  display: block;
  margin-bottom: 4px;
  color: var(--navy);
  font: 700 19px / 1.3 var(--serif);
}

.method-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1.35fr);
  gap: 70px;
  background: var(--paper);
}

.method-section__intro > p:last-child {
  margin: 26px 0 0;
  color: var(--ink-muted);
}

.method-grid {
  border-top: 3px solid var(--navy);
}

.method-grid article {
  position: relative;
  min-height: 150px;
  padding: 26px 20px 26px 72px;
  border-bottom: 1px solid var(--line-strong);
}

.method-grid span {
  position: absolute;
  top: 28px;
  left: 0;
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
}

.method-grid h3 {
  margin: 0 0 8px;
  font: 700 23px / 1.25 var(--serif);
}

.method-grid p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 13px;
}

.sources-list {
  grid-column: 1 / -1;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.sources-list summary {
  padding: 18px 0;
  color: var(--red-dark);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.sources-list ul {
  margin: 0;
  padding: 0 0 26px 20px;
  columns: 2;
  column-gap: 48px;
}

.sources-list li {
  margin: 8px 0;
  break-inside: avoid;
  color: var(--ink-muted);
  font-size: 12px;
}

.sources-list a {
  text-underline-offset: 4px;
}

.closing {
  min-height: 460px;
  padding: 100px 24px;
  display: grid;
  place-content: center;
  text-align: center;
  background: var(--red);
  color: white;
}

.closing p {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.closing h2 {
  max-width: 980px;
  color: white;
}

.closing__links {
  margin: 34px auto 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.closing a {
  width: fit-content;
  padding: 13px 22px;
  border: 1px solid white;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
}

.closing a:hover {
  background: white;
  color: var(--red-dark);
}

.site-footer {
  width: min(calc(100% - 48px), var(--content));
  min-height: 100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--paper);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

.site-footer strong {
  margin-right: 8px;
  font: 700 20px / 1 var(--serif);
  letter-spacing: 0.08em;
}

.site-footer a {
  color: var(--paper);
  text-underline-offset: 4px;
}

@media (max-width: 1120px) {
  .hero__inner {
    grid-template-columns: 130px minmax(0, 1fr) 280px;
    gap: 32px;
  }

  .hero__copy h1 {
    font-size: clamp(54px, 7.6vw, 82px);
  }

  .map-layout {
    grid-template-columns: 1fr;
  }

  .map-legend ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .map-legend li:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .force {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 30px;
  }

  .force dl div {
    padding-inline: 16px;
  }

  .message-flow article {
    width: auto;
  }
}

@media (max-width: 860px) {
  .site-bar__inner,
  .hero__inner,
  .section-heading,
  .map-layout,
  .force-list,
  .message-flow,
  .message-routes,
  .method-section,
  .site-footer {
    width: min(calc(100% - 32px), var(--content));
  }

  .site-bar__inner {
    min-height: 68px;
  }

  .brand {
    font-size: 23px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .site-nav a:last-child {
    display: none;
  }

  .hero,
  .hero__inner {
    min-height: auto;
  }

  .hero__cut {
    width: 38%;
    opacity: 0.08;
  }

  .hero__inner {
    padding: 70px 0;
    grid-template-columns: 1fr;
  }

  .hero__date {
    min-height: 0;
    padding: 0 0 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line-strong);
    flex-direction: row;
  }

  .hero__date time {
    font: 700 17px / 1 var(--serif);
    writing-mode: horizontal-tb;
  }

  .hero__brief {
    max-width: 560px;
    margin-top: 12px;
  }

  .map-section,
  .forces-section,
  .message-section,
  .method-section {
    padding-block: 76px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-intro {
    max-width: 620px;
  }

  .force {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .force dl {
    grid-template-columns: 1fr;
  }

  .force dl div {
    padding: 16px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .regions-grid {
    grid-template-columns: 1fr;
  }

  .regions-grid article {
    min-height: 0;
  }

  .message-flow {
    grid-template-columns: 1fr;
  }

  .message-flow article {
    min-height: 0;
    padding: 24px 0;
  }

  .message-flow article p {
    margin-top: 8px;
  }

  .message-flow i {
    transform: rotate(90deg);
    transform-origin: center;
    justify-self: center;
  }

  .method-section {
    grid-template-columns: 1fr;
    gap: 42px;
  }
}

@media (max-width: 620px) {
  body {
    line-height: 1.68;
  }

  .site-nav a {
    font-size: 12px;
  }

  .hero__inner {
    padding-top: 52px;
  }

  .hero__copy h1 {
    font-size: 15vw;
    letter-spacing: -0.06em;
  }

  .hero__copy h1 em {
    font-size: 12.4vw;
  }

  .hero__copy .hero__lead {
    font-size: 22px;
  }

  .hero__copy > p:not(.eyebrow) {
    font-size: 15px;
  }

  .hero__brief {
    padding: 22px 20px;
  }

  .section-heading h2,
  .method-section h2,
  .regions-section h2,
  .closing h2 {
    font-size: 11vw;
  }

  .map-toolbar {
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
  }

  .map-toolbar::before {
    display: none;
  }

  .map-toolbar button {
    flex: 0 0 auto;
  }

  .map-scroll-hint {
    margin: 0;
    padding: 10px 14px;
    display: block;
    background: var(--paper-deep);
    border-inline: 1px solid var(--navy);
    color: var(--ink-muted);
    font-size: 12px;
    line-height: 1.5;
  }

  .map-canvas {
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-behavior: smooth;
    touch-action: pan-x pan-y;
    -webkit-overflow-scrolling: touch;
  }

  .map-canvas > picture,
  .map-overlay {
    min-width: 700px;
  }

  .map-legend {
    padding: 24px 20px;
  }

  .map-legend ul {
    display: block;
  }

  .map-legend li:nth-last-child(-n + 2) {
    border-bottom: 1px solid rgba(247, 237, 217, 0.2);
  }

  .map-legend li:last-child {
    border-bottom: 0;
  }

  .force {
    padding-block: 34px;
  }

  .regions-section {
    padding-block: 76px;
  }

  .regions-section__lead {
    font-size: 20px;
  }

  .message-routes {
    grid-template-columns: 1fr;
  }

  .message-routes p,
  .message-routes p:first-child {
    padding: 16px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .sources-list ul {
    columns: 1;
  }

  .closing {
    min-height: 400px;
  }

  .closing__links {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .closing a {
    width: 100%;
  }

  .site-footer {
    min-height: 132px;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
  }
}

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

  .layer {
    transition: none;
  }
}