:root {
  --ink: #151916;
  --ink-soft: #202722;
  --paper: #efe8d8;
  --paper-deep: #d9cfbb;
  --red: #b82f2c;
  --red-bright: #d4493f;
  --gold: #d5a54d;
  --sage: #849377;
  --mist: #aab0a5;
  --white: #f9f5ea;
  --display: "STKaiti", "KaiTi", "FangSong", "Times New Roman", serif;
  --sans: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --shadow: 0 26px 80px rgba(4, 10, 6, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 99;
  pointer-events: none;
  opacity: 0.15;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

button,
input {
  font: inherit;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 10px;
  left: 12px;
  padding: 10px 16px;
  transform: translateY(-150%);
  background: var(--white);
  color: var(--ink);
}

.skip-link:focus {
  transform: translateY(0);
}

.topbar {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  height: 88px;
  padding: 0 clamp(24px, 5vw, 80px);
  display: flex;
  align-items: center;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.12em;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 50% 48% 45% 52%;
  background: var(--red);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.08);
  font: 700 23px/1 var(--display);
}

.brand b,
.brand small {
  display: block;
}

.brand b {
  font: 700 17px/1.25 var(--display);
}

.brand small {
  margin-top: 3px;
  opacity: 0.62;
  font-size: 9px;
  letter-spacing: 0.28em;
}

.topnav {
  display: flex;
  gap: clamp(22px, 4vw, 52px);
  margin: 0 auto;
  font-size: 13px;
  letter-spacing: 0.12em;
}

.topnav a {
  position: relative;
  opacity: 0.72;
  transition: opacity 180ms ease;
}

.topnav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -12px;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  background: var(--gold);
  transition: transform 180ms ease;
}

.topnav a:hover {
  opacity: 1;
}

.topnav a:hover::after {
  transform: scaleX(1);
}

.icon-button,
.small-button,
.ghost-button,
.primary-button {
  border: 0;
  cursor: pointer;
}

.icon-button {
  display: flex;
  gap: 9px;
  align-items: center;
  padding: 10px 13px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.14);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.icon-button[aria-pressed="true"] span:first-child {
  color: var(--gold);
}

.hero {
  position: relative;
  min-height: 760px;
  height: min(920px, 100svh);
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: #151b1d;
}

.hero-art {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(12, 17, 16, 0.4), rgba(12, 17, 16, 0.05) 48%, rgba(12, 17, 16, 0.56)),
    linear-gradient(0deg, rgba(8, 13, 12, 0.85), transparent 42%),
    url("assets/long-march-hero.png");
  background-position: center;
  background-size: cover;
  transform: scale(1.025);
  animation: hero-breathe 16s ease-in-out infinite alternate;
}

.hero-grain {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 13, 13, 0.58) 0, rgba(9, 13, 13, 0.12) 58%, rgba(9, 13, 13, 0.52) 100%),
    radial-gradient(circle at 62% 35%, transparent 0 18%, rgba(5, 9, 8, 0.14) 65%);
}

.hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 84px;
  background: linear-gradient(175deg, transparent 48%, var(--paper) 49%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(900px, 88vw);
  margin: 65px auto 0;
  text-align: center;
}

.eyebrow,
.section-kicker,
.mission-label,
.dialog-kicker {
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 11px;
  font-weight: 700;
}

.eyebrow {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  color: rgba(255, 255, 255, 0.76);
}

.eyebrow span {
  color: var(--gold);
  font-family: Georgia, serif;
}

.hero h1 {
  margin: 24px 0 18px;
  text-shadow: 0 9px 35px rgba(0, 0, 0, 0.34);
}

.hero h1 span,
.hero h1 em {
  display: block;
}

.hero h1 span {
  font: 700 clamp(70px, 10vw, 138px)/0.9 var(--display);
  letter-spacing: 0.08em;
}

.hero h1 em {
  margin-top: 22px;
  color: var(--gold);
  font: 400 clamp(17px, 2vw, 24px)/1 var(--display);
  letter-spacing: 0.65em;
  text-indent: 0.65em;
}

.hero-lead {
  margin: 28px auto;
  color: rgba(255, 255, 255, 0.76);
  font-size: clamp(15px, 1.4vw, 18px);
  letter-spacing: 0.1em;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  margin-top: 34px;
}

.primary-button {
  min-width: 178px;
  padding: 0;
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  color: var(--white);
  background: var(--red);
  box-shadow: 0 12px 30px rgba(105, 20, 17, 0.28);
  letter-spacing: 0.12em;
  transition: transform 180ms ease, background 180ms ease;
}

.primary-button span {
  padding: 16px 22px;
}

.primary-button i {
  align-self: stretch;
  min-width: 48px;
  display: grid;
  place-items: center;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
  font-style: normal;
}

.primary-button:hover {
  transform: translateY(-2px);
  background: var(--red-bright);
}

.primary-button:disabled {
  cursor: not-allowed;
  filter: grayscale(1);
  opacity: 0.45;
  transform: none;
}

.text-link {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.text-link span {
  margin-left: 7px;
  color: var(--gold);
}

.hero-note {
  margin-top: 44px;
  opacity: 0.58;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.hero-note span {
  margin-right: 8px;
  color: var(--gold);
}

.hero-index {
  position: absolute;
  z-index: 2;
  right: clamp(24px, 4vw, 70px);
  bottom: 110px;
  display: grid;
  justify-items: center;
  gap: 11px;
  color: rgba(255, 255, 255, 0.55);
}

.hero-index span {
  color: var(--gold);
  font: 26px/1 Georgia, serif;
}

.hero-index i {
  width: 1px;
  height: 62px;
  background: linear-gradient(var(--gold), transparent);
}

.hero-index small {
  writing-mode: vertical-rl;
  font: 8px/1 var(--sans);
  letter-spacing: 0.25em;
}

.route-section,
.archive-section,
.instructions-section,
.credits-section {
  padding: 120px clamp(22px, 7vw, 112px);
}

.route-section {
  position: relative;
  padding-top: 105px;
  background:
    radial-gradient(circle at 90% 5%, rgba(191, 158, 91, 0.15), transparent 23%),
    var(--paper);
}

.section-heading {
  width: min(760px, 100%);
  margin: 0 auto 58px;
  text-align: center;
}

.section-kicker,
.mission-label,
.dialog-kicker {
  color: var(--red);
}

.section-heading h2,
.archive-intro h2,
.credits-section h2 {
  margin: 10px 0 14px;
  font: 700 clamp(38px, 5vw, 64px)/1.2 var(--display);
  letter-spacing: 0.08em;
}

.section-heading > p:last-child,
.archive-intro > p:last-child {
  margin: 0;
  color: #62675f;
  font-size: 14px;
}

.route-card {
  max-width: 1240px;
  margin: auto;
  padding: 24px 32px 30px;
  border: 1px solid rgba(42, 51, 43, 0.16);
  background:
    linear-gradient(rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0.08)),
    repeating-linear-gradient(0deg, transparent 0 21px, rgba(74, 60, 36, 0.025) 22px);
  box-shadow: 0 16px 55px rgba(61, 52, 38, 0.08);
}

.route-topline {
  display: flex;
  justify-content: space-between;
  color: #5c625a;
  font-size: 11px;
  letter-spacing: 0.15em;
}

.live-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(184, 47, 44, 0.12);
}

.route-counter span {
  color: var(--red);
  font: 700 18px/1 Georgia, serif;
}

.route-map {
  position: relative;
  height: 280px;
  margin-top: 10px;
}

.route-line {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.route-line-shadow,
.route-line-progress {
  fill: none;
  stroke-linecap: round;
}

.route-line-shadow {
  stroke: rgba(40, 49, 42, 0.16);
  stroke-width: 2.3;
  stroke-dasharray: 4 8;
}

.route-line-progress {
  stroke: var(--red);
  stroke-width: 3;
  stroke-dasharray: 0 100;
  transition: stroke-dasharray 700ms ease;
}

.route-place,
.route-node {
  position: absolute;
  z-index: 2;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
}

.route-place {
  min-width: 70px;
  text-align: center;
  font-size: 11px;
}

.route-place i {
  display: block;
  width: 9px;
  height: 9px;
  margin: 0 auto 10px;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: #3e4940;
  box-shadow: 0 0 0 1px #3e4940;
}

.route-place span,
.route-place small {
  display: block;
}

.route-place small {
  opacity: 0.48;
  font-size: 8px;
  letter-spacing: 0.08em;
}

.route-place.muted {
  color: #71756f;
}

.route-node {
  width: 112px;
  padding: 0;
  border: 0;
  color: var(--ink);
  background: transparent;
  text-align: center;
  cursor: pointer;
}

.route-node i {
  position: relative;
  display: block;
  width: 19px;
  height: 19px;
  margin: 0 auto 8px;
  border: 5px solid var(--paper);
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 1px var(--red), 0 0 0 8px rgba(184, 47, 44, 0.08);
  transition: transform 160ms ease;
}

.route-node:hover i {
  transform: scale(1.18);
}

.node-number {
  position: absolute;
  right: 69px;
  top: -25px;
  color: var(--red);
  font: italic 14px/1 Georgia, serif;
}

.route-node b,
.route-node small {
  display: block;
}

.route-node b {
  font: 700 16px/1.4 var(--display);
}

.route-node small {
  color: #777a73;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.route-node.locked {
  filter: grayscale(1);
  opacity: 0.42;
  cursor: not-allowed;
}

.route-node.completed i {
  background: #536a55;
  box-shadow: 0 0 0 1px #536a55, 0 0 0 7px rgba(83, 106, 85, 0.11);
}

.route-node.completed .node-number::after {
  content: " ✓";
}

.mission-panel {
  max-width: 1240px;
  margin: 42px auto 0;
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(560px, 1.6fr);
  overflow: hidden;
  color: var(--white);
  background: var(--ink-soft);
  box-shadow: var(--shadow);
}

.mission-copy {
  padding: 48px 40px;
  background:
    radial-gradient(circle at 0 100%, rgba(184, 47, 44, 0.24), transparent 36%),
    linear-gradient(145deg, #293028, #171b18 72%);
}

.mission-copy h3 {
  margin: 13px 0 18px;
  font: 700 clamp(28px, 3vw, 43px)/1.25 var(--display);
}

.mission-copy > p:not(.mission-label):not(.history-caution) {
  color: rgba(255, 255, 255, 0.64);
  font-size: 13px;
}

.objective {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 13px;
  align-items: center;
  margin: 30px 0;
  padding: 15px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.objective-icon {
  color: var(--gold);
  font-size: 22px;
}

.objective small,
.objective b {
  display: block;
}

.objective small {
  opacity: 0.45;
  font-size: 8px;
  letter-spacing: 0.16em;
}

.objective b {
  margin-top: 2px;
  font-size: 12px;
}

#objective-progress {
  color: var(--gold);
  font: 18px Georgia, serif;
}

.mission-copy blockquote {
  margin: 25px 0 14px;
  padding-left: 18px;
  border-left: 2px solid var(--red);
  color: var(--paper-deep);
  font: 17px/1.8 var(--display);
}

.history-caution {
  margin-top: 24px !important;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  opacity: 0.44;
  font-size: 10px !important;
}

.game-wrap {
  position: relative;
  min-width: 0;
  padding: 18px;
  background: #111714;
}

.canvas-toolbar {
  height: 38px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  color: rgba(255, 255, 255, 0.56);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.canvas-actions {
  display: flex;
  flex-shrink: 0;
  gap: 7px;
}

.small-button {
  padding: 5px 10px;
  color: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: transparent;
  font-size: 9px;
  white-space: nowrap;
}

.exit-button {
  color: var(--gold);
  border-color: rgba(213, 165, 77, 0.32);
}

#game-canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #293229;
  touch-action: none;
}

.touch-controls {
  display: none;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.touch-controls button {
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--white);
  background: #293129;
  font-size: 19px;
  touch-action: none;
}

.rotate-hint {
  display: none;
}

body.game-active {
  overflow: hidden;
}

.mission-panel:not(.play-mode) {
  display: none;
}

.mission-panel.play-mode {
  position: fixed;
  z-index: 120;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100dvh;
  margin: 0;
  grid-template-columns: clamp(300px, 26vw, 390px) minmax(0, 1fr);
  box-shadow: none;
}

.mission-panel.play-mode .mission-copy {
  min-height: 0;
  overflow-y: auto;
}

.mission-panel.play-mode .game-wrap {
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(14px, 2vw, 30px);
}

.mission-panel.play-mode .canvas-toolbar {
  flex: 0 0 44px;
  align-items: flex-start;
}

.mission-panel.play-mode #game-canvas {
  width: 100%;
  max-height: calc(100dvh - 115px);
  margin: auto;
}

.archive-section {
  position: relative;
  color: var(--white);
  background:
    radial-gradient(circle at 90% 20%, rgba(184, 47, 44, 0.14), transparent 23%),
    linear-gradient(170deg, #222823, #111512 68%);
}

.archive-section::before {
  content: "1934—1936";
  position: absolute;
  top: 80px;
  right: -20px;
  color: rgba(255, 255, 255, 0.026);
  font: 700 clamp(75px, 13vw, 190px)/1 Georgia, serif;
  white-space: nowrap;
}

.archive-intro {
  position: relative;
  max-width: 710px;
  margin-bottom: 80px;
}

.archive-intro > p:last-child {
  color: rgba(255, 255, 255, 0.54);
}

.timeline {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 159px;
  width: 1px;
  background: linear-gradient(var(--red), rgba(255, 255, 255, 0.09));
}

.timeline-item {
  display: grid;
  grid-template-columns: 130px 58px 1fr;
  gap: 0;
  min-height: 150px;
}

.timeline-item time {
  padding-top: 5px;
  color: var(--gold);
  font: 18px/1 Georgia, serif;
  text-align: right;
}

.timeline-item > i {
  position: relative;
}

.timeline-item > i::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 25px;
  width: 9px;
  height: 9px;
  border: 3px solid var(--ink-soft);
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 1px var(--red);
}

.timeline-item > div {
  padding: 0 0 35px 5px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.timeline-item span {
  color: rgba(255, 255, 255, 0.4);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.timeline-item h3 {
  margin: 3px 0 6px;
  font: 700 24px/1.4 var(--display);
}

.timeline-item p {
  max-width: 720px;
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
}

.spirit-grid {
  max-width: 1180px;
  margin: 70px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.spirit-card {
  min-height: 240px;
  padding: 34px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.spirit-card:last-child {
  border-right: 0;
}

.spirit-card > span {
  color: var(--red-bright);
  font: italic 14px Georgia, serif;
}

.spirit-card h3 {
  margin: 40px 0 10px;
  font: 700 25px/1 var(--display);
}

.spirit-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
}

.instructions-section {
  background:
    linear-gradient(90deg, rgba(116, 99, 67, 0.05) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(rgba(116, 99, 67, 0.05) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--paper);
}

.manual-grid {
  max-width: 1180px;
  margin: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(40, 50, 42, 0.16);
  border: 1px solid rgba(40, 50, 42, 0.16);
}

.manual-grid article {
  min-height: 230px;
  padding: 35px 26px;
  background: rgba(245, 239, 224, 0.96);
}

.manual-grid h3 {
  margin: 28px 0 10px;
  font: 700 21px/1 var(--display);
}

.manual-grid p {
  margin: 0;
  color: #666a63;
  font-size: 12px;
}

.keycap,
.keys i {
  display: inline-grid;
  min-width: 35px;
  height: 35px;
  place-items: center;
  border: 1px solid rgba(32, 39, 34, 0.32);
  box-shadow: inset 0 -3px 0 rgba(32, 39, 34, 0.1);
  color: var(--red);
  background: var(--white);
  font-size: 11px;
  font-style: normal;
}

.keycap {
  padding: 0 10px;
}

.keys {
  display: flex;
  gap: 4px;
}

.accessibility-note {
  max-width: 1180px;
  margin: 24px auto 0;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid rgba(40, 50, 42, 0.14);
}

.accessibility-note > div {
  display: flex;
  align-items: center;
  gap: 14px;
}

.accessibility-note > div > span {
  color: var(--red);
  font-size: 28px;
}

.accessibility-note p {
  margin: 0;
  color: #6b6f68;
  font-size: 11px;
}

.accessibility-note b {
  display: block;
  color: var(--ink);
  font-size: 12px;
}

.ghost-button {
  padding: 10px 17px;
  border: 1px solid rgba(35, 43, 36, 0.25);
  color: var(--ink);
  background: transparent;
  font-size: 11px;
}

.credits-section {
  display: grid;
  grid-template-columns: 0.7fr 1.6fr;
  gap: 70px;
  color: var(--white);
  background: #272e28;
}

.credits-section h2 {
  font-size: clamp(34px, 4vw, 51px);
}

.credits-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 35px;
}

.credits-columns h3 {
  margin: 0 0 12px;
  color: var(--paper);
  font: 700 18px var(--display);
}

.credits-columns p {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
}

.credits-columns a {
  color: var(--gold);
  border-bottom: 1px solid rgba(213, 165, 77, 0.35);
}

footer {
  padding: 45px clamp(24px, 6vw, 90px);
  display: flex;
  align-items: center;
  gap: 35px;
  color: rgba(255, 255, 255, 0.5);
  background: #111512;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.footer-brand {
  color: var(--white);
}

.copyright {
  margin-left: auto;
}

dialog {
  color: var(--ink);
  border: 0;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.45);
}

dialog::backdrop {
  background: rgba(8, 12, 10, 0.82);
  backdrop-filter: blur(7px);
}

.result-dialog {
  width: min(560px, calc(100vw - 32px));
  padding: 48px;
  text-align: center;
  background:
    radial-gradient(circle at 100% 0, rgba(184, 47, 44, 0.11), transparent 35%),
    var(--paper);
}

.dialog-mark {
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border: 1px solid var(--red);
  border-radius: 50%;
  color: var(--red);
  font-size: 27px;
}

.result-dialog h2,
.quiz-dialog h2,
.certificate h2 {
  margin: 8px 0 15px;
  font: 700 36px/1.3 var(--display);
}

.result-dialog > p:not(.dialog-kicker) {
  color: #656a62;
  font-size: 13px;
}

.fact-card {
  margin: 25px 0;
  padding: 18px;
  border: 1px solid rgba(49, 57, 49, 0.15);
  text-align: left;
}

.fact-card span {
  color: var(--red);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.fact-card p {
  margin: 5px 0 0;
  color: #4d534d;
  font-size: 12px;
}

.result-dialog .primary-button {
  margin: auto;
}

.quiz-dialog {
  width: min(680px, calc(100vw - 32px));
  padding: 48px;
  background: var(--paper);
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 15px;
  width: 36px;
  height: 36px;
  border: 0;
  color: #696d65;
  background: transparent;
  cursor: pointer;
  font-size: 24px;
}

.quiz-progress {
  height: 3px;
  margin: 24px 0 18px;
  overflow: hidden;
  background: rgba(40, 48, 41, 0.12);
}

.quiz-progress i {
  display: block;
  width: 20%;
  height: 100%;
  background: var(--red);
  transition: width 250ms ease;
}

.quiz-count {
  color: #73776f;
  font: 12px Georgia, serif;
}

.quiz-options {
  display: grid;
  gap: 10px;
  margin: 28px 0 18px;
}

.quiz-option {
  padding: 15px 18px;
  display: grid;
  grid-template-columns: 31px 1fr;
  gap: 12px;
  align-items: center;
  border: 1px solid rgba(42, 51, 43, 0.16);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.3);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}

.quiz-option span {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(41, 50, 42, 0.08);
  font: 11px Georgia, serif;
}

.quiz-option:hover,
.quiz-option.selected {
  border-color: var(--red);
}

.quiz-option.selected {
  background: rgba(184, 47, 44, 0.08);
  box-shadow: inset 4px 0 0 var(--red);
}

.quiz-option.selected span {
  color: #fff;
  background: var(--red);
}

.quiz-option.correct {
  border-color: #536a55;
  background: rgba(83, 106, 85, 0.11);
}

.quiz-option.wrong {
  border-color: var(--red);
  background: rgba(184, 47, 44, 0.09);
}

.quiz-feedback {
  min-height: 27px;
  margin: 0 0 12px;
  color: #676c64;
  font-size: 12px;
}

.quiz-next {
  margin-left: auto;
}

.certificate-dialog {
  width: min(760px, calc(100vw - 32px));
  padding: 22px;
  background: #d8cdb5;
}

.certificate {
  position: relative;
  padding: 52px 44px;
  overflow: hidden;
  border: 1px solid #948263;
  outline: 5px double rgba(92, 77, 52, 0.33);
  outline-offset: -11px;
  background:
    radial-gradient(circle at 10% 15%, rgba(178, 47, 42, 0.08), transparent 25%),
    #eee5d2;
  text-align: center;
}

.certificate::before,
.certificate::after {
  content: "✦";
  position: absolute;
  color: rgba(184, 47, 44, 0.25);
  font-size: 90px;
}

.certificate::before {
  top: -35px;
  left: -10px;
}

.certificate::after {
  right: -10px;
  bottom: -35px;
}

.certificate-seal {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border: 4px double rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  color: var(--white);
  background: var(--red);
  font: 700 28px var(--display);
  transform: rotate(-5deg);
}

.certificate > p:first-of-type {
  color: #766b56;
  font: 9px Georgia, serif;
  letter-spacing: 0.28em;
}

.certificate h2 {
  margin-top: 16px;
  color: var(--red);
  font-size: 48px;
  letter-spacing: 0.14em;
}

.certificate-copy {
  color: #6e685e;
  font-size: 12px;
}

.certificate label {
  display: block;
  margin-top: 24px;
  color: #8a7d68;
  font-size: 9px;
  letter-spacing: 0.2em;
}

.certificate input {
  width: min(280px, 80%);
  padding: 6px 8px;
  border: 0;
  border-bottom: 1px solid #8f8068;
  color: var(--ink);
  background: transparent;
  text-align: center;
  font: 700 25px var(--display);
}

.score-line {
  margin: 28px auto 15px;
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: center;
  gap: 10px 18px;
  color: #837762;
  font-size: 10px;
}

.score-line b {
  color: var(--ink);
}

.certificate blockquote {
  margin: 18px 0 0;
  color: #6e1d1a;
  font: 18px var(--display);
}

.certificate-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.toast {
  position: fixed;
  z-index: 300;
  right: 24px;
  bottom: 24px;
  max-width: min(360px, calc(100vw - 48px));
  padding: 13px 17px;
  transform: translateY(130%);
  opacity: 0;
  color: var(--white);
  background: #202720;
  box-shadow: var(--shadow);
  font-size: 12px;
  transition: transform 250ms ease, opacity 250ms ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.reveal {
  transform: translateY(25px);
  opacity: 0;
  transition: transform 700ms ease, opacity 700ms ease;
}

.reveal.visible {
  transform: translateY(0);
  opacity: 1;
}

@keyframes hero-breathe {
  from { transform: scale(1.025); }
  to { transform: scale(1.065); }
}

@media (max-width: 1050px) {
  .mission-panel {
    grid-template-columns: 1fr;
  }

  .mission-copy {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 34px;
  }

  .mission-copy .mission-label,
  .mission-copy h3,
  .mission-copy blockquote {
    grid-column: 1;
  }

  .mission-copy > p:not(.mission-label) {
    grid-column: 2;
  }

  .mission-copy .objective {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: end;
  }

  .mission-copy .history-caution {
    grid-column: 2;
  }

  .mission-panel.play-mode {
    grid-template-columns: clamp(280px, 32vw, 340px) minmax(0, 1fr);
  }

  .mission-panel.play-mode .mission-copy {
    display: block;
  }

  .spirit-grid,
  .manual-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .spirit-card:nth-child(2) {
    border-right: 0;
  }

  .spirit-card:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .credits-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    height: 72px;
    padding: 0 18px;
  }

  .topnav {
    display: none;
  }

  .icon-button {
    margin-left: auto;
  }

  .sound-label {
    display: none;
  }

  .hero {
    min-height: 690px;
    height: 100svh;
    align-items: flex-end;
    padding-bottom: 110px;
  }

  .hero-art {
    background-position: 32% center;
  }

  .hero-content {
    width: calc(100% - 36px);
    margin: 0 auto;
    text-align: left;
  }

  .eyebrow {
    justify-content: flex-start;
    gap: 10px;
    font-size: 9px;
    letter-spacing: 0.16em;
  }

  .hero h1 span {
    font-size: clamp(56px, 19vw, 86px);
    line-height: 0.93;
    letter-spacing: 0.03em;
  }

  .hero h1 em {
    text-align: left;
    font-size: 15px;
    letter-spacing: 0.35em;
    text-indent: 0;
  }

  .hero-lead br {
    display: none;
  }

  .hero-actions {
    justify-content: flex-start;
    gap: 18px;
  }

  .hero-note,
  .hero-index {
    display: none;
  }

  .route-section,
  .archive-section,
  .instructions-section,
  .credits-section {
    padding: 82px 18px;
  }

  .route-card {
    padding: 20px 12px;
    overflow-x: auto;
  }

  .route-map {
    width: 880px;
    height: 250px;
  }

  .route-topline {
    position: sticky;
    left: 0;
  }

  .mission-panel {
    margin-top: 25px;
  }

  .mission-panel.play-mode {
    inset: 0;
    height: 100dvh;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    overflow-y: auto;
  }

  .mission-copy {
    display: block;
    padding: 34px 24px;
  }

  .mission-copy .objective {
    margin: 22px 0;
  }

  .mission-panel.play-mode .mission-copy {
    padding: 16px 18px 12px;
    overflow: visible;
  }

  .mission-panel.play-mode .mission-label {
    margin: 0;
    font-size: 8px;
  }

  .mission-panel.play-mode .mission-copy h3 {
    margin: 4px 0 7px;
    font-size: 24px;
  }

  .mission-panel.play-mode .mission-copy > p:not(.mission-label):not(.history-caution) {
    margin: 0;
    font-size: 11px;
    line-height: 1.55;
  }

  .mission-panel.play-mode .mission-copy blockquote,
  .mission-panel.play-mode .history-caution {
    display: none;
  }

  .mission-panel.play-mode .objective {
    margin: 10px 0 0;
    padding: 9px 11px;
  }

  .game-wrap {
    padding: 10px;
  }

  .mission-panel.play-mode .game-wrap {
    justify-content: flex-start;
    padding: 10px;
  }

  .mission-panel.play-mode .canvas-toolbar {
    flex-basis: 40px;
  }

  .mission-panel.play-mode #game-canvas {
    max-height: none;
    margin: 0;
  }

  .canvas-toolbar {
    padding-top: 3px;
  }

  .touch-controls {
    display: grid;
  }

  .timeline::before {
    left: 11px;
  }

  .timeline-item {
    grid-template-columns: 30px 1fr;
    min-height: 170px;
  }

  .timeline-item time {
    grid-column: 2;
    padding: 0;
    text-align: left;
  }

  .timeline-item > i {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .timeline-item > i::before {
    top: 3px;
    left: 6px;
  }

  .timeline-item > div {
    grid-column: 2;
    padding-left: 0;
  }

  .spirit-grid,
  .manual-grid,
  .credits-columns {
    grid-template-columns: 1fr;
  }

  .spirit-card {
    min-height: 190px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .manual-grid article {
    min-height: 190px;
  }

  .accessibility-note {
    align-items: flex-start;
    gap: 20px;
  }

  .credits-section {
    gap: 35px;
  }

  footer {
    flex-wrap: wrap;
  }

  .copyright {
    width: 100%;
    margin: 0;
  }

  .result-dialog,
  .quiz-dialog {
    padding: 35px 23px;
  }

  .certificate-dialog {
    padding: 15px;
  }

  .certificate {
    padding: 42px 19px;
  }

  .certificate h2 {
    font-size: 38px;
  }

  .score-line {
    grid-template-columns: auto auto;
  }
}

@media (max-width: 480px) {
  .brand-mark {
    width: 39px;
    height: 39px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-heading {
    text-align: left;
  }

  .section-heading h2,
  .archive-intro h2 {
    font-size: 38px;
  }

  .spirit-grid,
  .manual-grid {
    grid-template-columns: 1fr;
  }

  .accessibility-note {
    flex-direction: column;
  }
}

/* Full-screen 2D platform game overrides */
.mission-panel.play-mode {
  display: block;
  background: #070d0b;
}

.mission-panel.play-mode .mission-copy {
  display: none;
}

.mission-panel.play-mode .game-wrap {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 0;
  overflow: hidden;
  background: #070d0b;
}

.mission-panel.play-mode #game-canvas {
  width: 100vw;
  height: 100dvh;
  max-width: 100vw;
  max-height: 100dvh;
  margin: 0;
  border: 0;
  object-fit: contain;
  background: #070d0b;
}

.mission-panel.play-mode .canvas-toolbar {
  position: absolute;
  z-index: 8;
  top: 18px;
  right: auto;
  left: 50%;
  transform: translateX(-50%);
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 0;
  pointer-events: none;
}

.mission-panel.play-mode .canvas-toolbar > span {
  display: none;
}

.mission-panel.play-mode .canvas-actions {
  pointer-events: auto;
}

.mission-panel.play-mode .small-button {
  min-height: 34px;
  padding: 6px 12px;
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(7, 13, 11, 0.62);
  backdrop-filter: blur(8px);
}

@media (hover: none), (pointer: coarse) {
  .mission-panel.play-mode .canvas-toolbar {
    top: 10px;
    right: auto;
    left: 50%;
    transform: translateX(-50%);
  }

  .mission-panel.play-mode .canvas-toolbar > span {
    display: none;
  }

  .mission-panel.play-mode .touch-controls {
    position: absolute;
    z-index: 9;
    right: 22px;
    bottom: 28px;
    left: 22px;
    display: grid;
    grid-template-columns: 64px 64px 1fr 68px 68px;
    gap: 10px;
    margin: 0;
    pointer-events: none;
  }

  .mission-panel.play-mode .touch-controls button {
    width: 64px;
    height: 64px;
    min-height: 0;
    border: 1px solid rgba(255, 255, 255, 0.26);
    border-radius: 50%;
    background: rgba(8, 14, 12, 0.52);
    box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(7px);
    pointer-events: auto;
    font-size: 20px;
    font-weight: 700;
  }

  .mission-panel.play-mode .touch-controls button:nth-child(1) { grid-column: 1; }
  .mission-panel.play-mode .touch-controls button:nth-child(2) { grid-column: 2; }
  .mission-panel.play-mode .touch-controls button:nth-child(3) { grid-column: 4; color: var(--gold); }
  .mission-panel.play-mode .touch-controls button:nth-child(4) { grid-column: 5; color: var(--red-bright); }
}

@media (max-width: 900px) {
  .mission-panel.play-mode .canvas-toolbar {
    right: auto;
    left: 50%;
    transform: translateX(-50%);
  }

  .mission-panel.play-mode .canvas-toolbar > span {
    display: none;
  }
}

@media (orientation: portrait) and (max-width: 900px) {
  .mission-panel.play-mode .rotate-hint {
    position: absolute;
    z-index: 20;
    inset: 0;
    display: grid;
    place-content: center;
    gap: 8px;
    color: var(--white);
    background: #111914;
    text-align: center;
  }

  .rotate-hint span {
    color: var(--gold);
    font-size: 54px;
  }

  .rotate-hint b {
    font: 700 27px var(--display);
  }

  .rotate-hint small {
    color: rgba(255, 255, 255, 0.55);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body > *:not(.certificate-dialog) { display: none !important; }
  .certificate-dialog[open] {
    position: static;
    width: 100%;
    max-width: none;
    padding: 0;
    box-shadow: none;
  }
  .certificate-actions { display: none; }
  .certificate { min-height: 80vh; }
}