:root {
  --paper: #131118;
  --ink: #f0edf6;
  --muted: #a69eb5;
  --line: #31293f;
  --purple: #c084fc;
  --purple-hover: #d8b4fe;
  --purple-dark: #160c26;
  --lime: var(--purple);
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: Arial, Helvetica, sans-serif;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
a,
button {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 6px;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}
button {
  cursor: pointer;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
p,
h1,
h2,
h3,
figure {
  margin: 0;
}
.wrap {
  width: min(1320px, calc(100% - 96px));
  margin-inline: auto;
}
.eyebrow {
  font: 10px/1.6 var(--mono);
  letter-spacing: 1.2px;
}
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #9333ea;
  flex: none;
}
.site-header {
  height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  font-size: 23px;
  letter-spacing: -1.1px;
  font-weight: 750;
  gap: 4px;
}
.brand-light {
  font-weight: 400;
}
.brand-mark {
  width: 38px;
  height: 38px;
  flex: none;
  margin-right: 8px;
  transform: rotate(-6deg);
}
.brand:hover {
  text-decoration: none;
}
nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 13px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 40px;
  padding-top: 70px;
  padding-bottom: 76px;
}
.hero-copy {
  padding: 16px 0;
}

.hero h1 {
  font-size: clamp(46px, 4.6vw, 70px);
  font-weight: 500;
  line-height: 1.09;
  letter-spacing: -3.5px;
  margin-top: 27px;
}
.expression {
  position: relative;
  display: inline-block;
  z-index: 0;
}
.expression svg {
  position: absolute;
  bottom: -9px;
  left: 0;
  width: 100%;
  height: 19px;
  z-index: -1;
  fill: none;
  stroke: var(--purple);
  stroke-width: 5;
  stroke-linecap: round;
}
.hero-description {
  font-size: 16px;
  line-height: 1.8;
  max-width: 420px;
  margin-top: 30px;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 29px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  font-size: 13px;
  border-radius: 5px;
  padding: 18px 21px;
  min-height: 52px;
  transition:
    background 0.2s,
    transform 0.2s;
}
.button-dark {
  background: var(--purple);
  color: var(--purple-dark);
  font-weight: 600;
}
.button-dark:hover {
  background: var(--purple-hover);
  text-decoration: none;
  transform: translateY(-2px);
}
.text-link {
  font-size: 13px;
}
.text-link span {
  margin-left: 10px;
}

.icon-svg {
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  fill: currentColor;
  vertical-align: -0.08em;
  flex-shrink: 0;
}
.icon-external {
  margin-left: 0.35em;
  width: 0.78em;
  height: 0.78em;
  vertical-align: -0.04em;
}
.icon-down,
.icon-up {
  margin-left: 0.35em;
  width: 0.75em;
  height: 0.75em;
  vertical-align: -0.05em;
}
.icon-external-wrap {
  display: inline-flex;
  align-items: center;
}

.board-stage {
  position: relative;
  isolation: isolate;
  background: #191522;
  border: 1px solid #332744;
  border-radius: 10px;
  padding: 22px 22px 17px;
  min-width: 0;
  overflow: hidden;
}
.stage-top,
.stage-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font: 9px/1.5 var(--mono);
  letter-spacing: 0.4px;
  position: relative;
  z-index: 2;
}
.stage-top > span:first-child {
  display: flex;
  align-items: center;
  gap: 7px;
}
.stage-top > span:last-child {
  color: var(--muted);
}
.stage-word {
  position: absolute;
  top: 76px;
  left: 14px;
  right: 14px;
  text-align: center;
  font-size: clamp(80px, 9.4vw, 145px);
  font-weight: 800;
  letter-spacing: -10px;
  color: #241c30;
  z-index: -1;
}
.board-image-wrap {
  aspect-ratio: 1.2;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1px -15px 0;
}
.board-image-wrap img {
  width: 96%;
  max-width: 96%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 19px 13px #25163b28);
  transform: rotate(-3deg);
  transition: opacity 0.2s;
}
.stage-bottom {
  margin-top: 0;
}
.render-label {
  color: var(--muted);
  font-size: 8px;
}
.board-controls {
  display: flex;
  gap: 5px;
  background: #14111c;
  border: 1px solid #36284a;
  border-radius: 5px;
  padding: 4px;
  margin-top: 18px;
  width: 100%;
}
.board-controls[hidden] {
  display: none;
}
.board-controls button {
  flex: 1;
  border: 0;
  padding: 10px 6px;
  border-radius: 3px;
  background: transparent;
  color: #bfb5cf;
  font: 10px var(--mono);
  min-height: 36px;
}
.board-controls button span {
  margin-left: 6px;
}
.board-controls button[aria-pressed="true"] {
  background: var(--purple);
  color: var(--purple-dark);
}
.board-controls button:hover {
  background: #281d3d;
}
.board-controls button[aria-pressed="true"]:hover {
  background: var(--purple-hover);
}
.fallback-view {
  margin-top: 20px;
}
.fallback-view figcaption {
  font: 11px var(--mono);
}
.spec-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block: 1px solid var(--line);
  padding-block: 25px;
}
.spec-strip > div {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding-left: 35px;
  border-left: 1px solid var(--line);
  font-size: 17px;
  letter-spacing: -0.3px;
}
.spec-strip > div:first-child {
  padding-left: 0;
  border-left: 0;
}
.spec-label {
  font: 9px var(--mono);
  letter-spacing: 1px;
  color: var(--muted);
}
.section-space {
  padding-top: 83px;
  padding-bottom: 78px;
}
h2 {
  font-size: 39px;
  line-height: 1.15;
  font-weight: 500;
  letter-spacing: -1.7px;
}
.section-intro {
  display: grid;
  grid-template-columns: 0.75fr 1.4fr 1.15fr;
  gap: 28px;
  align-items: start;
}
.section-intro .eyebrow {
  padding-top: 7px;
}
.section-intro > p:last-child {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 53px;
  gap: 30px;
}
.steps article {
  border-top: 1px solid #372a4c;
  padding-top: 19px;
}
.step-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.step-number {
  font: 14px var(--mono);
  color: #bfb5cf;
}
.step-tag {
  font: 9px var(--mono);
  letter-spacing: 0.8px;
  color: var(--muted);
}
h3 {
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.6px;
  margin-top: 26px;
}
.steps article > p {
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
  margin-top: 13px;
  max-width: 330px;
}
.workflow-note {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  margin-top: 29px;
}
.workflow-note span {
  margin-right: 8px;
}
.luna-section {
  background: #171320;
  color: var(--ink);
  border-block: 1px solid var(--line);
}
.luna-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  padding-block: 61px;
}
.luna-section .eyebrow {
  color: #b5a9cd;
}
.luna-section h2 {
  font-size: 65px;
  letter-spacing: -3px;
  margin-top: 22px;
}
.lime-text {
  color: var(--purple);
}
.luna-description {
  color: #c4b9d8;
  font-size: 16px;
  line-height: 1.8;
  margin-top: 16px;
}
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #4a3864;
  border-radius: 3px;
  padding: 10px 11px;
  font: 9px var(--mono);
  letter-spacing: 0.6px;
  margin-top: 27px;
  color: var(--purple);
}
.status-badge .status-dot {
  background: var(--purple);
}
dl {
  margin: 0;
}
dl > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  padding-block: 15px;
  gap: 16px;
  border-bottom: 1px solid #36294a;
}
dl > div:first-child {
  padding-top: 0;
}
dt {
  font-size: 12px;
  color: #b5a9cd;
  padding-top: 2px;
}
dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
}
dd span {
  color: #b5a9cd;
  font-size: 11px;
}
.light-link {
  display: inline-flex;
  justify-content: space-between;
  gap: 35px;
  font-size: 12px;
  color: var(--purple);
  margin-top: 24px;
}
.join {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}
.join h2 {
  margin-top: 21px;
}
.join p:last-child {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 490px;
  margin-top: 19px;
}
.join-links {
  min-width: 250px;
}
.join-links .button {
  width: 100%;
}
.readme-links {
  display: flex;
  gap: 28px;
  justify-content: space-between;
  margin-top: 21px;
  font-size: 11px;
}

.back-top {
  font: 10px var(--mono);
  white-space: nowrap;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 20px;
  z-index: 10;
  padding: 14px;
  background: var(--ink);
  color: #fff;
}
.skip-link:focus {
  top: 15px;
}
@media (min-width: 1550px) {
  .hero {
    gap: 70px;
  }
  .hero h1 {
    font-size: 73px;
  }
}
@media (max-width: 1050px) {
  .wrap {
    width: calc(100% - 56px);
  }
  .hero {
    gap: 25px;
  }
  .hero h1 {
    font-size: 49px;
    letter-spacing: -2.5px;
  }

  .hero-description {
    font-size: 15px;
  }
  .hero-actions {
    gap: 19px;
  }
  .board-stage {
    padding: 18px 16px;
  }
  .stage-top {
    font-size: 8px;
  }
  .stage-top > span:last-child {
    display: none;
  }
  .section-intro {
    grid-template-columns: 0.65fr 1.2fr 1.1fr;
    gap: 22px;
  }
  h2 {
    font-size: 32px;
  }
  .luna-grid {
    gap: 40px;
  }
  dl > div {
    grid-template-columns: 105px 1fr;
  }

  .steps {
    gap: 24px;
  }
}
@media (max-width: 760px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    height: 80px;
  }
  .brand {
    font-size: 20px;
  }
  .brand-mark {
    width: 32px;
    height: 32px;
    margin-right: 5px;
  }
  nav {
    gap: 15px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 33px;
    padding-bottom: 35px;
  }
  .hero-copy {
    padding: 0;
  }

  .hero h1 {
    font-size: clamp(42px, 9.7vw, 68px);
    letter-spacing: -2.7px;
    margin-top: 22px;
  }
  .hero-description {
    margin-top: 24px;
    font-size: 15px;
    max-width: 470px;
    line-height: 1.75;
  }
  .hero-actions {
    margin-top: 23px;
    gap: 27px;
  }

  .board-stage {
    max-width: 540px;
    width: 100%;
    justify-self: center;
    padding: 17px;
  }
  .stage-top {
    font-size: 8px;
  }
  .stage-top > span:last-child {
    display: block;
  }
  .stage-word {
    top: 65px;
    font-size: 24vw;
    letter-spacing: -6px;
  }
  .board-image-wrap {
    aspect-ratio: 1.35;
    margin-top: 7px;
  }
  .board-controls {
    margin-top: 14px;
  }
  .spec-strip {
    grid-template-columns: 1fr 1fr;
    row-gap: 24px;
    padding-block: 23px;
  }
  .spec-strip > div {
    padding-left: 18px;
    font-size: 16px;
    gap: 7px;
  }
  .spec-strip > div:nth-child(3) {
    border: 0;
    padding-left: 0;
  }
  .spec-label {
    font-size: 8px;
  }
  .section-space {
    padding-block: 50px;
  }
  .section-intro {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .section-intro .eyebrow {
    padding: 0;
  }
  h2 {
    font-size: 35px;
  }
  .section-intro > p:last-child {
    max-width: 510px;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 26px;
    margin-top: 30px;
  }
  .steps article {
    padding-top: 15px;
  }
  .steps h3 {
    margin-top: 17px;
    font-size: 22px;
  }
  .steps article > p {
    max-width: none;
    font-size: 14px;
    margin-top: 10px;
  }
  .workflow-note {
    margin-top: 25px;
    font-size: 11px;
  }
  .luna-grid {
    grid-template-columns: 1fr;
    padding-block: 43px;
    gap: 37px;
  }
  .luna-section h2 {
    font-size: 58px;
    margin-top: 17px;
  }
  .luna-description {
    font-size: 15px;
  }
  .status-badge {
    margin-top: 22px;
    font-size: 8px;
  }
  .luna-details dl > div {
    grid-template-columns: 102px 1fr;
    gap: 14px;
  }
  dd {
    font-size: 12px;
  }
  dd span {
    font-size: 11px;
  }
  .join {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }
  .join-links {
    width: 100%;
  }
  .join-links .button {
    max-width: 380px;
  }
  .readme-links {
    max-width: 380px;
    justify-content: flex-start;
    gap: 32px;
    font-size: 12px;
  }

  .back-top {
    margin-left: auto;
  }
  .button {
    font-size: 12px;
    padding: 16px 19px;
  }
  .text-link {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* Development history and the on-demand model viewer. */
[hidden] {
  display: none !important;
}
.inline-link {
  color: var(--lime);
}
.development-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
}
.development-heading h2 {
  margin-top: 21px;
}
.development-heading > p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.join {
  border-top: 1px solid var(--line);
}
.view-3d-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  width: 100%;
  margin-top: 10px;
  border: 1px solid #4a3864;
  border-radius: 4px;
  background: transparent;
  color: var(--purple);
  font-size: 12px;
}
.view-3d-button:hover {
  background: #261b3c;
}
.view-3d-button > span:last-child {
  margin-left: auto;
}
.view-3d-button > span:first-child {
  margin-right: auto;
}
#model-dialog {
  width: min(1040px, calc(100% - 36px));
  max-height: calc(100dvh - 36px);
  padding: 25px;
  border: 1px solid #3d2f50;
  border-radius: 12px;
  background: #15111c;
  color: var(--ink);
  overflow: auto;
}
#model-dialog::backdrop {
  background: #000b;
  backdrop-filter: blur(6px);
}
body:has(#model-dialog[open]) {
  overflow: hidden;
}
.model-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.model-header h2 {
  font-size: 31px;
  margin-top: 7px;
}
#close-3d,
.model-actions button {
  background: #251b38;
  border: 1px solid #41305c;
  color: var(--ink);
  border-radius: 5px;
  min-height: 44px;
  min-width: 44px;
  padding: 9px 14px;
}
#close-3d:hover,
.model-actions button:hover {
  background: #362552;
}
.model-actions button:disabled {
  opacity: 0.4;
  cursor: wait;
}
#model-viewport {
  height: clamp(230px, 55dvh, 540px);
  position: relative;
  margin-top: 20px;
  overflow: hidden;
  border-radius: 7px;
  background: radial-gradient(ellipse at center, #2e1d44, #120e1a);
}
#model-viewport canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}
#model-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  line-height: 1.7;
  font-size: 14px;
  color: #dfd3ed;
  pointer-events: none;
}
.model-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 17px;
}
#model-help {
  font-size: 12px;
  line-height: 1.8;
  color: #ceb9df;
}
#model-help span {
  font-size: 10px;
  color: var(--muted);
}
.model-actions {
  display: flex;
  gap: 6px;
}
.model-actions button {
  font-size: 12px;
}
.model-note {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding-top: 17px;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  line-height: 1.8;
  color: var(--muted);
}
@media (max-width: 1050px) {
  nav {
    gap: 20px;
  }
}
@media (max-width: 760px) {
  .development-heading {
    display: block;
  }
  .development-heading > p {
    margin-top: 20px;
  }

  #model-dialog {
    width: calc(100% - 20px);
    max-height: calc(100dvh - 20px);
    padding: 16px;
  }
  .model-header h2 {
    font-size: 25px;
  }
  .model-header .eyebrow {
    font-size: 8px;
  }
  #model-viewport {
    height: 43dvh;
    min-height: 210px;
  }
  .model-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .model-actions {
    width: 100%;
  }
  #model-reset {
    margin-left: auto;
  }
}

/* Language selection and bilingual typography. */
.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;
}
.language-picker {
  display: flex;
  align-items: center;
  margin-left: 10px;
}
.language-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #191424;
  color: var(--ink);
  font: 12px/1 var(--sans);
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color 0.2s,
    background 0.2s,
    color 0.2s;
}
.language-toggle:hover {
  border-color: var(--purple);
  background: #251b36;
  color: var(--purple-hover);
}
.language-toggle:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 4px;
}
.language-picker select {
  min-height: 44px;
  min-width: 112px;
  padding: 10px 30px 10px 13px;
  border: 1px solid #3d2f50;
  border-radius: 5px;
  background: #191424;
  color: var(--ink);
  font: 12px var(--sans);
  cursor: pointer;
}
.language-picker select:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 4px;
}
.hero h1 {
  margin-top: 0;
}
html:lang(zh-Hans) {
  --sans: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
html:lang(zh-Hans) .hero-space {
  display: none;
}
html:lang(zh-Hans) h1,
html:lang(zh-Hans) h2,
html:lang(zh-Hans) h3 {
  letter-spacing: 0;
  line-height: 1.3;
}
html:lang(zh-Hans) .eyebrow,
html:lang(zh-Hans) .timeline-date {
  letter-spacing: 0.6px;
}

/* Alternating milestones share one continuous chronological spine. */
.timeline {
  position: relative;
  list-style: none;
  padding: 0;
  margin: 52px 0 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 30px;
  bottom: 35px;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(#8b5cf6 0%, #c084fc 48%, #4c1d95 80%);
}
.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 0 0 28px;
  min-width: 0;
}
.timeline li:last-child {
  padding-bottom: 0;
}
.timeline-entry {
  position: relative;
  grid-column: 1;
  margin-right: 36px;
  padding: 24px 26px;
  background: #191524;
  border: 1px solid #36294a;
  border-radius: 10px;
}
.timeline li:nth-child(even) .timeline-entry {
  grid-column: 2;
  margin-right: 0;
  margin-left: 36px;
}
.timeline li::before {
  content: "";
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 30px;
  width: 11px;
  height: 11px;
  transform: translate(-50%, -50%);
  border: 3px solid var(--paper);
  border-radius: 50%;
  background: #8b5cf6;
  box-shadow: 0 0 0 1px #6d28d9;
}
.timeline li::after {
  content: "";
  position: absolute;
  left: calc(50% - 36px);
  top: 30px;
  width: 36px;
  height: 1px;
  background: #6d28d9;
}
.timeline li:nth-child(even)::after {
  left: 50%;
}
.timeline .timeline-current::before {
  width: 13px;
  height: 13px;
  background: var(--purple);
  box-shadow:
    0 0 0 1px var(--purple),
    0 0 0 6px #c084fc20;
}
.timeline-current .timeline-entry {
  border-color: #8b5cf6;
  background: #221636;
}
.timeline .timeline-planned::before {
  background: var(--paper);
  box-shadow: 0 0 0 1px #6d28d9;
}
.timeline-date {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 15px;
  font: 10px/1.6 var(--mono);
  letter-spacing: 0.6px;
  color: #d1c7e0;
}
.timeline-state {
  font-size: 9px;
  letter-spacing: 0.5px;
  border: 1px solid #45345d;
  border-radius: 20px;
  padding: 3px 8px;
  color: var(--muted);
}
.timeline-current .timeline-state {
  color: var(--purple);
  border-color: #7c3aed;
}
.timeline .state-issue {
  color: #e6b992;
  border-color: #6b503a;
}
.timeline h3 {
  font-size: 23px;
  line-height: 1.3;
  margin: 17px 0 0;
}
.timeline p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  margin-top: 12px;
  max-width: 490px;
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid var(--line);
  padding-block: 30px;
  font-size: 11px;
  line-height: 1.8;
}
.footer-identity {
  max-width: 510px;
}
.footer-identity > p:first-child {
  font-size: 13px;
  margin-bottom: 8px;
}
.copyright,
.made-with-love {
  color: var(--muted);
}
.copyright a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.made-with-love {
  margin-top: 3px;
}
.footer-license {
  padding-top: 4px;
  font-size: 10px;
}
.footer-license > p {
  color: var(--muted);
  margin-top: 7px;
}
.site-footer .back-top {
  padding-top: 7px;
}
@media (max-width: 760px) {
  nav > a {
    display: none;
  }
  .language-picker {
    margin-left: 0;
  }
  .language-toggle {
    min-height: 32px;
    padding: 5px 11px;
    font-size: 11px;
  }
  .language-picker select {
    min-width: 102px;
    font-size: 11px;
    padding-left: 10px;
  }
  .timeline {
    margin-top: 33px;
  }
  .timeline::before {
    left: 8px;
    top: 29px;
    bottom: 35px;
  }
  .timeline li {
    display: block;
    padding-bottom: 22px;
  }
  .timeline-entry,
  .timeline li:nth-child(even) .timeline-entry {
    margin-left: 35px;
    margin-right: 0;
    padding: 21px 18px;
  }
  .timeline li::before {
    left: 8px;
    top: 29px;
  }
  .timeline li::after,
  .timeline li:nth-child(even)::after {
    left: 8px;
    top: 29px;
    width: 27px;
  }
  .timeline h3 {
    font-size: 21px;
    margin-top: 15px;
  }
  .timeline p {
    font-size: 13px;
  }
  .timeline-date {
    font-size: 9px;
    gap: 7px 9px;
  }
  .timeline-state {
    font-size: 8px;
  }
  .site-footer {
    flex-wrap: wrap;
    gap: 20px;
  }
  .footer-identity {
    width: 100%;
  }
  .footer-license {
    font-size: 9px;
  }
  .site-footer .back-top {
    margin-left: auto;
    font-size: 9px;
  }
}
@media (max-width: 360px) {
  .brand {
    font-size: 18px;
    gap: 3px;
  }
  .brand-mark {
    width: 28px;
    height: 28px;
    margin-right: 3px;
  }
  .language-toggle {
    min-width: 60px;
    padding-inline: 8px;
    font-size: 10px;
  }
  .language-picker select {
    min-width: 92px;
    padding-right: 22px;
  }
}

@media (max-width: 760px) {
  html:lang(zh-Hans) .luna-section h2 {
    font-size: 44px;
  }
}