@font-face {
  font-family: "Ropa Sans";
  src: url("/assets/ropa-sans.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}
:root {
  color-scheme: dark;
  --space: #030614;
  --deep: #0b1730;
  --paper: #edf7ff;
  --muted: #9caec6;
  --blue: #75d8fa;
  --violet: #a49aef;
  --line: rgba(164, 199, 238, 0.14);
  --font: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --display: "Ropa Sans", Arial, sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}
body {
  margin: 0;
  background: var(--space);
  color: var(--paper);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
body.dialog-open {
  overflow: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  border: 0;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 6px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
p,
h1,
h2,
h3,
figure,
dl,
dd {
  margin: 0;
}
p {
  line-height: 1.95;
}
h2 {
  font-size: clamp(34px, 3.6vw, 52px);
  font-weight: 550;
  line-height: 1.45;
  letter-spacing: 0.025em;
}
.page-width {
  width: min(1240px, calc(100% - 112px));
  margin-inline: auto;
}
.section-note {
  font-size: 12px;
  color: var(--blue);
  letter-spacing: 0.13em;
  margin-bottom: 23px;
}
.mobile-break {
  display: none;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  background: white;
  color: black;
  padding: 12px;
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: none;
}
.site-header {
  position: absolute;
  top: 22px;
  left: 0;
  width: 100%;
  z-index: 10;
}
.header-inner {
  width: min(1350px, calc(100% - 64px));
  height: 74px;
  margin: auto;
  padding-inline: 28px 17px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border: 1px solid rgba(175, 210, 255, 0.15);
  border-radius: 13px;
  background: rgba(8, 17, 35, 0.62);
  backdrop-filter: blur(22px);
  box-shadow:
    0 14px 50px rgba(0, 3, 14, 0.12),
    inset 0 1px 0 rgba(227, 244, 255, 0.04);
}
.brand {
  display: flex;
  align-items: center;
  min-height: 44px;
}
.brand img {
  width: 143px;
  height: auto;
}
.desktop-nav {
  display: flex;
  gap: 40px;
  margin-left: 55px;
}
.desktop-nav a {
  position: relative;
  font-size: 13px;
  color: #b7c7de;
  padding-block: 15px;
  transition: color 0.2s;
}
.desktop-nav a:after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--blue);
  transform: translateX(-50%) scale(0);
  transition: transform 0.2s;
}
.desktop-nav a:hover {
  color: white;
}
.desktop-nav a:hover:after {
  transform: translateX(-50%) scale(1);
}
.header-action {
  display: flex;
  align-items: center;
  gap: 25px;
  padding: 11px 17px;
  border: 1px solid rgba(144, 197, 246, 0.28);
  border-radius: 7px;
  font-size: 12px;
  background: linear-gradient(
    120deg,
    rgba(90, 160, 230, 0.13),
    rgba(109, 94, 197, 0.08)
  );
}
.header-action span {
  font-size: 20px;
  color: #b5e7ff;
}
.menu-toggle,
.mobile-nav {
  display: none;
}
.hero {
  min-height: 940px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: #030614;
}
.hero-nebula {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse at 77% 43%,
      rgba(12, 67, 130, 0.23),
      transparent 48%
    ),
    radial-gradient(
      ellipse at 55% 95%,
      rgba(77, 49, 127, 0.12),
      transparent 48%
    );
}
.hero-nebula:before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.6;
  background-image:
    radial-gradient(1px 1px at 12% 28%, #bfdbef 60%, transparent),
    radial-gradient(1px 1px at 34% 17%, #8badd2 60%, transparent),
    radial-gradient(1px 1px at 55% 69%, #9cb5da 60%, transparent),
    radial-gradient(1px 1px at 75% 85%, #a2c9e5 60%, transparent),
    radial-gradient(1px 1px at 7% 80%, #7697c5 60%, transparent);
  background-size: 650px 570px;
}
.hero-scene {
  position: absolute;
  width: min(71vw, 1140px);
  height: 850px;
  right: -5%;
  top: 40px;
  z-index: 1;
  pointer-events: none;
}
.hero-scene canvas {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.3s ease;
}
.hero-scene.is-ready canvas {
  opacity: 1;
}
.scene-fallback {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.85;
  transition: opacity 1.2s ease;
  mask-image: linear-gradient(90deg, transparent, black 25%);
}
.scene-fallback img {
  width: 105%;
  max-width: none;
  position: absolute;
  top: -40px;
  right: -7%;
}
.hero-scene.is-ready .scene-fallback {
  opacity: 0;
}
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(
      90deg,
      #030614 0%,
      rgba(3, 6, 20, 0.96) 20%,
      rgba(3, 6, 20, 0.65) 37%,
      transparent 60%
    ),
    linear-gradient(0deg, var(--space) 0%, transparent 24%);
}
.hero-content {
  padding-top: 205px;
  position: relative;
  z-index: 3;
}
.hero-intro {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #b8d0eb;
  font-size: 12px;
  letter-spacing: 0.16em;
}
.tiny-star {
  color: #9fe8ff;
  font-size: 18px;
  text-shadow: 0 0 20px rgba(92, 204, 255, 0.6);
}
h1 {
  font-size: clamp(66px, 6.5vw, 94px);
  font-weight: 600;
  line-height: 1.19;
  letter-spacing: 0.045em;
  margin: 25px 0 20px;
  color: #f0f8ff;
  text-shadow: 0 3px 35px rgba(121, 189, 239, 0.12);
}
.hero-english {
  font-family: var(--display);
  font-size: 25px;
  letter-spacing: 0.11em;
  color: #9bbfdf;
}
.hero-description {
  font-size: 14px;
  color: #94a9c5;
  line-height: 2.1;
  margin-top: 27px;
  max-width: 465px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 35px;
  margin-top: 35px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 37px;
  min-height: 54px;
  padding: 15px 26px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  transition:
    background 0.2s,
    box-shadow 0.2s,
    transform 0.2s;
}
.button-light {
  background: linear-gradient(115deg, #dff5ff, #e9e8ff);
  color: #0d1932;
  box-shadow:
    0 0 32px rgba(114, 194, 244, 0.1),
    inset 0 1px 0 #fff;
}
.button-light:hover {
  background: #eefbff;
  box-shadow: 0 0 36px rgba(114, 194, 244, 0.25);
  transform: translateY(-2px);
}
.button span {
  font-size: 21px;
  font-weight: 400;
}
.quiet-link {
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 12px;
  color: #b0c6e1;
}
.circle-arrow {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid #345370;
  border-radius: 50%;
  color: #b9e6ff;
}
.scene-caption {
  position: absolute;
  top: 710px;
  right: 13%;
  z-index: 3;
  display: flex;
  gap: 15px;
  align-items: flex-start;
  color: #b3d4ef;
  font-size: 12px;
  letter-spacing: 0.1em;
  pointer-events: none;
}
.scene-marker {
  width: 7px;
  height: 7px;
  border: 1px solid #a4dcff;
  transform: rotate(45deg);
  margin-top: 5px;
  box-shadow: 0 0 18px rgba(103, 194, 255, 0.5);
}
.scene-caption-sub {
  display: block;
  color: #607c9f;
  font-size: 10px;
  letter-spacing: 0.04em;
  margin-top: 9px;
}
.hero-bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 36px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 10px;
  color: #6f8bad;
  letter-spacing: 0.08em;
}
.hero-bottom-note {
  display: flex;
  align-items: center;
  gap: 11px;
}
.signal-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #82d9ef;
  box-shadow: 0 0 12px #5cb4db;
}
.hero-bottom > a {
  display: flex;
  gap: 12px;
  align-items: center;
}
.scroll-line {
  width: 1px;
  height: 34px;
  background: linear-gradient(transparent, #7fb4d9);
}
.hero-coordinate {
  font: 13px var(--display);
  letter-spacing: 0.12em;
}
.plan-section {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 110px;
  padding-block: 104px 117px;
}
.plan-section:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, #77bce7, transparent);
}
.plan-heading .section-note {
  margin-bottom: 27px;
}
.plan-copy {
  padding-top: 41px;
  color: var(--muted);
  font-size: 14px;
}
.plan-copy p + p {
  margin-top: 23px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 36px;
  margin-top: 30px;
  color: #b7ddfa;
  font-size: 12px;
}
.text-link span {
  font-size: 20px;
}
.text-link:hover {
  color: white;
}
.satellite-section {
  position: relative;
  padding-block: 94px;
  background: #071025;
  border-block: 1px solid rgba(117, 166, 224, 0.08);
  overflow: hidden;
}
.satellite-section:before {
  content: "";
  position: absolute;
  width: 850px;
  height: 850px;
  left: -230px;
  top: -170px;
  pointer-events: none;
  background: radial-gradient(
    ellipse,
    rgba(22, 84, 136, 0.16),
    transparent 64%
  );
}
.satellite-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 86px;
  align-items: center;
}
.satellite-figure {
  position: relative;
  border-radius: 16px;
  border: 1px solid rgba(142, 191, 236, 0.28);
  overflow: hidden;
  background: #08182a;
  aspect-ratio: 1.03;
  box-shadow: 0 35px 90px rgba(0, 4, 18, 0.3);
  transform: perspective(1200px) rotateX(var(--tilt-x, 0deg))
    rotateY(var(--tilt-y, 0deg));
  transition:
    transform 0.3s ease-out,
    border-color 0.3s;
}
.satellite-figure > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 48% center;
  opacity: 0.93;
}
.satellite-figure:after {
  content: "";
  position: absolute;
  inset: 60% 0 0;
  background: linear-gradient(transparent, rgba(3, 8, 22, 0.8));
  pointer-events: none;
}
.satellite-figure:hover {
  border-color: rgba(155, 220, 255, 0.55);
}
.satellite-figure figcaption {
  position: absolute;
  bottom: 25px;
  left: 27px;
  font-size: 10px;
  color: #bbd6ef;
  z-index: 1;
}
.image-corner {
  position: absolute;
  right: 25px;
  top: 22px;
  color: #c7e9ff;
  font-size: 24px;
  text-shadow: 0 0 18px #6fa6d7;
}
.satellite-copy h2 {
  font-size: clamp(34px, 3.5vw, 48px);
  line-height: 1.4;
}
.section-description {
  font-size: 16px;
  color: #b2cee9;
  margin-top: 24px;
}
.satellite-body {
  color: #8199b7;
  font-size: 13px;
  margin-top: 20px;
  max-width: 440px;
}
.satellite-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 25px;
  margin-top: 33px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.satellite-facts dt {
  font-size: 10px;
  color: #728bab;
  margin-bottom: 7px;
}
.satellite-facts dd {
  font-family: var(--display), var(--font);
  font-size: 28px;
  color: #deefff;
  letter-spacing: 0.025em;
}
.satellite-facts small {
  font-family: var(--font);
  font-size: 12px;
  color: #91b5d9;
  font-weight: 400;
}
.echo-section {
  padding-block: 115px 125px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
}
.section-heading > p {
  font-size: 13px;
  color: #879fbc;
  padding-bottom: 9px;
}
.section-heading .section-note {
  margin-bottom: 13px;
}
.story-tabs {
  display: flex;
  gap: 38px;
  border-bottom: 1px solid var(--line);
  margin-top: 42px;
}
.story-tabs button {
  position: relative;
  background: none;
  color: #6f88aa;
  font-size: 13px;
  padding: 0 0 17px;
  min-height: 44px;
}
.story-tabs button[aria-selected="true"] {
  color: #d8f1ff;
}
.story-tabs button[aria-selected="true"]:after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: #a5dbff;
  box-shadow: 0 0 15px rgba(112, 188, 255, 0.5);
}
.story-stage {
  display: grid;
  grid-template-columns: 1.32fr 1fr;
  min-height: 425px;
  margin-top: 32px;
  background: linear-gradient(115deg, #0a1427, #091123);
  border: 1px solid rgba(153, 194, 242, 0.12);
  border-radius: 13px;
  overflow: hidden;
}
.story-image {
  position: relative;
  min-height: 425px;
}
.story-image > img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  aspect-ratio: 1.47;
  object-position: center;
}
.story-image:after {
  content: "";
  position: absolute;
  inset: 65% 0 0;
  background: linear-gradient(transparent, rgba(3, 8, 23, 0.8));
  pointer-events: none;
}
.story-image figcaption {
  position: absolute;
  left: 25px;
  bottom: 22px;
  z-index: 1;
  font-size: 10px;
  color: #d0e4f8;
}
.story-content {
  padding: 46px 43px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.story-symbol {
  position: absolute;
  right: 28px;
  top: 24px;
  font-size: 24px;
  color: #52769e;
}
.story-content .section-note {
  margin-bottom: 17px;
  font-size: 11px;
}
.story-content h3 {
  font-size: 29px;
  line-height: 1.55;
  font-weight: 500;
  letter-spacing: 0.025em;
}
.story-content > p:not(.section-note) {
  font-size: 13px;
  color: #8b9fba;
  line-height: 1.95;
  margin-top: 22px;
}
.story-footnote {
  color: #5f7d9f;
  font-size: 10px;
  margin-top: auto;
  padding-top: 30px;
}
.explore-section {
  position: relative;
  background: #08142a;
  border-block: 1px solid #122441;
  padding-block: 104px;
  overflow: hidden;
}
.explore-section:before {
  content: "";
  pointer-events: none;
  position: absolute;
  width: 800px;
  height: 800px;
  right: -180px;
  top: -110px;
  border: 1px solid rgba(109, 155, 213, 0.08);
  border-radius: 50%;
  transform: rotate(-25deg) scaleX(0.8);
  box-shadow:
    0 0 0 90px rgba(74, 114, 178, 0.018),
    0 0 0 180px rgba(74, 114, 178, 0.015);
}
.explore-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: center;
}
.explore-copy h2 {
  font-size: clamp(34px, 3.5vw, 48px);
}
.explore-copy > p:not(.section-note) {
  font-size: 14px;
  color: #8fa9c9;
  margin-top: 25px;
}
.explore-copy .button {
  margin-top: 33px;
}
.star-letter {
  position: relative;
  border: 1px solid #34587f;
  background:
    radial-gradient(
      ellipse at 85% 5%,
      rgba(85, 123, 191, 0.17),
      transparent 60%
    ),
    linear-gradient(135deg, rgba(28, 65, 105, 0.3), rgba(7, 17, 38, 0.8));
  border-radius: 15px;
  padding: 31px 32px 25px;
  transform: perspective(1000px) rotateX(var(--tilt-x, 0deg))
    rotateY(var(--tilt-y, 0deg)) rotate(2deg);
  transition:
    transform 0.3s ease-out,
    border-color 0.3s;
  box-shadow:
    0 25px 70px rgba(0, 3, 18, 0.25),
    inset 0 1px 0 rgba(190, 219, 255, 0.06);
}
.star-letter:hover {
  border-color: #6999c6;
}
.letter-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.letter-top img {
  opacity: 0.85;
}
.letter-top > span {
  font-size: 21px;
  color: #a7d5fb;
}
.letter-quote {
  position: relative;
  margin-top: 38px;
  margin-bottom: 39px;
}
.letter-quote > span {
  position: absolute;
  left: -3px;
  top: -18px;
  color: #648eb6;
  font-family: Georgia, serif;
  font-size: 56px;
}
.letter-quote p {
  padding-left: 23px;
  line-height: 1.7;
  font-size: 28px;
  font-weight: 500;
  letter-spacing: 0.06em;
}
.letter-details {
  border-top: 1px solid #2b4568;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 24px;
}
.letter-details > div > span {
  font-size: 22px;
  color: #a5d8fa;
}
.letter-details h3 {
  font-size: 12px;
  font-weight: 500;
  margin-top: 10px;
}
.letter-details p {
  font-size: 9px;
  color: #7c9abc;
  margin-top: 4px;
}
.letter-signature {
  color: #6684a7;
  font: 13px/1.7 var(--display);
  letter-spacing: 0.03em;
  margin-top: 27px;
}
.closing-section {
  position: relative;
  text-align: center;
  padding-block: 106px 100px;
}
.closing-star {
  font-size: 30px;
  color: #b0dfff;
  text-shadow: 0 0 30px rgba(85, 185, 255, 0.5);
}
.closing-section > p {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 450;
  letter-spacing: 0.08em;
  margin-top: 24px;
}
.closing-section > a {
  font-size: 11px;
  color: #83a7c9;
  display: inline-flex;
  align-items: center;
  gap: 25px;
  margin-top: 25px;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 35px 38px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 32px;
}
.footer-brand p {
  font: 12px/1.5 var(--display);
  color: #577393;
  letter-spacing: 0.08em;
  margin-top: 9px;
}
.footer-meta {
  margin-left: auto;
  text-align: right;
  font-size: 10px;
  color: #6b85a6;
  line-height: 1.8;
}
.back-top {
  border: 1px solid #2c4669;
  border-radius: 50%;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: #97bada;
}
.filing-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 24px;
  width: 100%;
  margin-top: 12px;
  color: #8399b5;
  font-size: 11px;
  line-height: 1.8;
}
.filing-links a:hover {
  color: #e5f1ff;
}
dialog {
  border: 1px solid #42648b;
  border-radius: 17px;
  width: min(440px, calc(100% - 36px));
  padding: 42px 35px 28px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, #142a49, #091428 70%);
  color: var(--paper);
  box-shadow:
    0 30px 110px #000a,
    0 0 70px rgba(64, 115, 181, 0.1);
}
dialog::backdrop {
  background: rgba(1, 4, 15, 0.82);
  backdrop-filter: blur(9px);
}
.dialog-close {
  position: absolute;
  top: 12px;
  right: 15px;
  font-size: 28px;
  background: none;
  color: #9dafc6;
  width: 38px;
  height: 38px;
}
.dialog-star {
  font-size: 34px;
  color: #9bdfff;
  display: block;
  margin-bottom: 20px;
  text-shadow: 0 0 24px rgba(98, 191, 255, 0.4);
}
dialog h2 {
  font-size: 32px;
  line-height: 1.5;
}
dialog .section-note {
  font-size: 11px;
  margin-bottom: 12px;
}
#mini-dialog-description {
  color: #a6b5c9;
  font-size: 13px;
  margin-top: 20px;
}
#mini-dialog-description strong {
  display: inline-block;
  font-size: 18px;
  font-weight: 500;
  color: #e5f1ff;
  margin-top: 8px;
}
dialog .button {
  margin-top: 25px;
  width: 100%;
  min-height: 48px;
}
.copy-status {
  min-height: 26px;
  font-size: 12px;
  color: #b1d9f8;
  margin-top: 8px;
}
.dialog-note {
  font-size: 10px;
  color: #70839c;
  margin-top: 9px;
}
@media (min-width: 1700px) {
  .hero-scene {
    right: calc((100vw - 1650px) / 2);
  }
  .scene-caption {
    right: calc((100vw - 1200px) / 2);
  }
}
@media (max-width: 1100px) {
  .page-width {
    width: calc(100% - 80px);
  }
  .desktop-nav {
    margin-left: 0;
    gap: 25px;
  }
  .hero {
    min-height: 900px;
  }
  .hero-content {
    padding-top: 200px;
  }
  .hero-scene {
    width: 80vw;
    height: 780px;
    right: -15%;
    top: 80px;
  }
  .scene-caption {
    top: 705px;
    right: 8%;
  }
  .hero-shade {
    background:
      linear-gradient(
        90deg,
        #030614 1%,
        rgba(3, 6, 20, 0.8) 30%,
        transparent 70%
      ),
      linear-gradient(0deg, var(--space) 0%, transparent 24%);
  }
  .plan-section {
    gap: 65px;
  }
  .satellite-layout {
    gap: 45px;
  }
  .satellite-figure {
    aspect-ratio: 0.86;
  }
  .story-content {
    padding: 35px 30px;
  }
  .story-content h3 {
    font-size: 25px;
  }
  .explore-layout {
    gap: 50px;
  }
  .star-letter {
    padding: 26px 25px;
  }
  .letter-quote p {
    font-size: 24px;
  }
  .letter-details p {
    font-size: 8px;
  }
}
@media (max-width: 760px) {
  html {
    scroll-padding-top: 28px;
  }
  .page-width {
    width: calc(100% - 44px);
  }
  .site-header {
    top: 17px;
  }
  .header-inner {
    width: calc(100% - 30px);
    height: 62px;
    padding-inline: 18px 12px;
    gap: 15px;
    border-radius: 10px;
  }
  .brand img {
    width: 119px;
  }
  .desktop-nav,
  .header-action {
    display: none;
  }
  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 38px;
    height: 42px;
    background: transparent;
    padding: 8px;
  }
  .menu-toggle span {
    display: block;
    width: 22px;
    height: 1px;
    background: #c4e6ff;
  }
  .mobile-nav:not([hidden]) {
    display: flex;
    position: absolute;
    top: 73px;
    left: 15px;
    right: 15px;
    flex-direction: column;
    padding: 13px 23px 20px;
    background: #07142af5;
    border: 1px solid #294969;
    border-radius: 10px;
    backdrop-filter: blur(20px);
  }
  .mobile-nav a {
    font-size: 14px;
    padding: 14px 0;
    color: #c4d9ef;
  }
  .hero {
    min-height: 1070px;
  }
  .hero-content {
    display: flex;
    flex-direction: column;
    padding-top: 127px;
  }
  .hero-intro {
    order: 0;
    font-size: 10px;
    letter-spacing: 0.12em;
    gap: 8px;
  }
  .tiny-star {
    font-size: 15px;
  }
  h1 {
    order: 1;
    font-size: clamp(52px, 14vw, 66px);
    line-height: 1.18;
    letter-spacing: 0.035em;
    margin: 20px 0 18px;
  }
  .hero-english {
    order: 2;
    font-size: 22px;
    letter-spacing: 0.09em;
  }
  .hero-actions {
    order: 3;
    gap: 25px;
    margin-top: 25px;
  }
  .hero-actions .button {
    min-height: 48px;
    font-size: 12px;
    padding: 12px 20px;
    gap: 25px;
  }
  .quiet-link {
    font-size: 11px;
    gap: 10px;
  }
  .circle-arrow {
    width: 24px;
    height: 24px;
  }
  .hero-description {
    order: 4;
    margin-top: 415px;
    font-size: 12px;
    line-height: 2;
    color: #91a8c4;
    max-width: 100%;
  }
  .hero-scene {
    width: 130%;
    height: 475px;
    top: 438px;
    left: -15%;
    right: auto;
  }
  .scene-fallback {
    mask-image: linear-gradient(
      0deg,
      transparent,
      black 15%,
      black 90%,
      transparent
    );
  }
  .scene-fallback img {
    width: 130%;
    right: -15%;
    top: -20px;
  }
  .hero-shade {
    background: linear-gradient(
      0deg,
      var(--space) 0%,
      transparent 23%,
      transparent 55%,
      rgba(3, 6, 20, 0.4) 75%,
      #030614 96%
    );
  }
  .scene-caption {
    top: 855px;
    right: 7%;
    font-size: 10px;
    gap: 11px;
  }
  .scene-caption-sub {
    display: none;
  }
  .scene-marker {
    width: 5px;
    height: 5px;
    margin-top: 4px;
  }
  .hero-bottom {
    bottom: 28px;
    font-size: 9px;
    letter-spacing: 0;
    gap: 15px;
  }
  .hero-bottom-note {
    gap: 8px;
  }
  .hero-coordinate {
    display: none;
  }
  .hero-bottom > a {
    gap: 8px;
    white-space: nowrap;
  }
  .scroll-line {
    height: 24px;
  }
  .mobile-break {
    display: block;
  }
  h2 {
    font-size: 31px;
    letter-spacing: 0.01em;
    line-height: 1.45;
  }
  .section-note {
    font-size: 11px;
    margin-bottom: 18px;
  }
  .plan-section {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-block: 68px 77px;
  }
  .plan-heading .section-note {
    margin-bottom: 18px;
  }
  .plan-copy {
    padding-top: 0;
    font-size: 12px;
  }
  .plan-copy p + p {
    margin-top: 17px;
  }
  .text-link {
    font-size: 12px;
    margin-top: 20px;
  }
  .satellite-section {
    padding-block: 56px 60px;
  }
  .satellite-layout {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .satellite-figure {
    aspect-ratio: 1.15;
    border-radius: 11px;
  }
  .satellite-figure figcaption {
    font-size: 9px;
    bottom: 18px;
    left: 20px;
  }
  .satellite-copy h2 {
    font-size: 32px;
  }
  .section-description {
    font-size: 14px;
    margin-top: 19px;
  }
  .satellite-body {
    font-size: 12px;
    line-height: 1.95;
    margin-top: 16px;
  }
  .satellite-facts {
    margin-top: 25px;
    padding-top: 22px;
    gap: 20px;
  }
  .satellite-facts dd {
    font-size: 26px;
  }
  .satellite-facts dt {
    font-size: 10px;
  }
  .echo-section {
    padding-block: 74px 76px;
  }
  .section-heading {
    display: block;
  }
  .section-heading > p {
    font-size: 12px;
    margin-top: 18px;
    padding-bottom: 0;
  }
  .story-tabs {
    gap: 30px;
    margin-top: 29px;
  }
  .story-tabs button {
    font-size: 12px;
    min-height: 42px;
    padding-bottom: 12px;
  }
  .story-stage {
    grid-template-columns: 1fr;
    min-height: 0;
    margin-top: 22px;
    border-radius: 10px;
  }
  .story-image {
    min-height: 0;
    aspect-ratio: 1.34;
  }
  .story-image > img {
    height: 100%;
    object-fit: cover;
  }
  .story-image figcaption {
    font-size: 9px;
    left: 19px;
    bottom: 17px;
  }
  .story-content {
    min-height: 285px;
    padding: 30px 25px;
  }
  .story-content h3 {
    font-size: 25px;
  }
  .story-content > p:not(.section-note) {
    font-size: 12px;
    margin-top: 17px;
  }
  .story-footnote {
    padding-top: 23px;
    font-size: 9px;
  }
  .story-symbol {
    font-size: 19px;
    right: 23px;
    top: 22px;
  }
  .explore-section {
    padding-block: 65px 67px;
  }
  .explore-layout {
    grid-template-columns: 1fr;
    gap: 47px;
  }
  .explore-copy h2 {
    font-size: 31px;
  }
  .explore-copy > p:not(.section-note) {
    font-size: 12px;
    margin-top: 20px;
  }
  .explore-copy .button {
    font-size: 12px;
    min-height: 48px;
    gap: 38px;
    margin-top: 26px;
  }
  .star-letter {
    margin: 0 5px;
    padding: 27px 23px 24px;
    transform: rotate(1.5deg);
  }
  .letter-quote {
    margin-block: 34px 30px;
  }
  .letter-quote p {
    font-size: 24px;
  }
  .letter-details {
    gap: 10px;
  }
  .letter-details h3 {
    font-size: 11px;
  }
  .letter-details p {
    font-size: 8px;
    line-height: 1.7;
  }
  .letter-signature {
    font-size: 11px;
  }
  .closing-section {
    padding-block: 72px 66px;
  }
  .closing-section > p {
    font-size: 27px;
    line-height: 1.65;
    letter-spacing: 0.08em;
  }
  .closing-star {
    font-size: 24px;
  }
  .closing-section > a {
    font-size: 10px;
    margin-top: 20px;
  }
  .site-footer {
    padding-block: 29px 30px;
    gap: 17px;
    align-items: flex-start;
  }
  .footer-brand {
    width: 100%;
  }
  .footer-meta {
    margin-left: 0;
    text-align: left;
    font-size: 9px;
  }
  .back-top {
    margin-left: auto;
    width: 32px;
    height: 32px;
  }
  .footer-brand p {
    font-size: 11px;
  }
  .footer-brand > img {
    width: 91px;
  }
  dialog {
    padding: 38px 27px 24px;
  }
  dialog h2 {
    font-size: 29px;
  }
}
@media (max-width: 360px) {
  .hero-actions {
    gap: 17px;
  }
  .hero-actions .button {
    gap: 14px;
    padding-inline: 17px;
  }
  .quiet-link {
    font-size: 10px;
    gap: 8px;
  }
  .hero-description {
    font-size: 11px;
  }
  .hero-bottom-note {
    max-width: 180px;
    font-size: 8px;
  }
  .letter-quote p {
    font-size: 21px;
  }
  .letter-details p {
    font-size: 7px;
  }
  .story-tabs {
    gap: 23px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
  .satellite-figure,
  .star-letter {
    transform: none;
  }
}