@font-face {
  font-family: Chivo;
  src: url("./assets/chivo-variable.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}
:root {
  --ground: #07090e;
  --surface: #111722;
  --surface-raised: #1b2434;
  --ink: #f4f6fc;
  --muted: #a5b1c8;
  --accent: #305bea;
  --accent-light: #9bb5ff;
  --paper: #eaf0ff;
  --paper-ink: #132346;
  --gap: clamp(24px, 5vw, 80px);
  --body: 16px;
  --small: 14px;
  --lead: clamp(20px, 2vw, 28px);
  --heading: clamp(32px, 4.1vw, 62px);
  --display: clamp(44px, 6.8vw, 104px);
  --ease: cubic-bezier(0.2, 0.75, 0.25, 1);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family:
    Chivo, "Hiragino Sans", "Yu Gothic", Meiryo, "PingFang SC", sans-serif;
  font-size: var(--body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
::selection {
  color: var(--ink);
  background: var(--accent);
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button,
input {
  font: inherit;
}
button,
a {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  border: 0;
}
a,
button {
  transition:
    transform 0.25s var(--ease),
    opacity 0.25s var(--ease),
    background-color 0.25s var(--ease);
}
a:hover,
button:hover {
  opacity: 0.85;
}
button:active,
.button:active {
  transform: translateY(2px);
}
:focus-visible {
  outline: 3px solid var(--accent-light);
  outline-offset: 6px;
}
svg {
  display: block;
}
p {
  margin: 0;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.045em;
  text-wrap: balance;
}
h1 span,
h2 span {
  display: block;
}
h2 {
  font-size: var(--heading);
  line-height: 1.28;
}
h3 {
  font-size: var(--lead);
  line-height: 1.5;
}
h1 {
  font-size: var(--display);
  line-height: 1.24;
  letter-spacing: -0.065em;
}
small {
  font-size: var(--small);
}
[hidden] {
  display: none !important;
}
.skip-link {
  position: fixed;
  left: 20px;
  top: 16px;
  padding: 10px 20px;
  background: var(--ink);
  color: var(--ground);
  z-index: 30;
  transform: translateY(-150%);
}
.skip-link:focus {
  transform: translateY(0);
}
.site-header {
  position: relative;
  z-index: 10;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 0 var(--gap);
  background: var(--ground);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: -0.045em;
}
.wordmark svg {
  width: 34px;
  height: 34px;
  color: var(--accent-light);
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: var(--small);
}
.header-actions {
  display: flex;
  gap: 24px;
  align-items: center;
}
.language-button {
  color: var(--muted);
  padding: 10px 0;
  min-width: 44px;
  background: none;
}
.header-cta {
  background: var(--surface-raised);
  color: var(--ink);
  padding: 10px 20px;
  min-height: 44px;
}
.menu-button {
  display: none;
  background: none;
  width: 44px;
  height: 44px;
  padding: 12px 6px;
}
.menu-button span {
  display: block;
  height: 2px;
  background: var(--ink);
  margin: 6px 0;
  width: 28px;
  transition: transform 0.3s var(--ease);
}
.hero {
  position: relative;
  min-height: 800px;
  height: calc(100svh - 100px);
  max-height: 1080px;
  isolation: isolate;
  overflow: clip;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px var(--gap) 100px;
}
.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 690px;
  width: 56%;
  pointer-events: none;
}
.hero-copy a {
  pointer-events: auto;
}
.hero-description {
  max-width: 430px;
  line-height: 1.95;
  margin-top: 32px;
  font-size: var(--body);
  color: var(--muted);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 18px 24px;
  min-height: 60px;
  font-size: var(--body);
  font-weight: 500;
}
.button svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  transition: transform 0.25s var(--ease);
}
.button:hover svg {
  transform: translateX(5px);
}
.button-primary {
  background: var(--accent);
  color: var(--ink);
}
.button-light {
  background: var(--ink);
  color: var(--paper-ink);
}
.hero .button {
  margin-top: 36px;
}
.hero-note {
  font-size: var(--small);
  color: var(--muted);
  margin-top: 24px;
}
.hero-art {
  position: absolute;
  inset: 0 -8% 25px 38%;
  z-index: 1;
  min-width: 0;
  touch-action: pan-y;
}
.hero-art canvas,
.orbit-fallback {
  position: absolute;
  width: 100%;
  height: 100%;
  inset: 0;
  object-fit: contain;
}
.hero-art canvas {
  opacity: 0;
  transition: opacity 0.8s var(--ease);
}
.hero-art.is-ready canvas {
  opacity: 1;
}
.hero-art.is-ready .orbit-fallback {
  visibility: hidden;
}
.orbit-caption {
  position: absolute;
  bottom: 13%;
  right: 20%;
  display: flex;
  gap: 16px;
  align-items: center;
  color: var(--muted);
  font-size: var(--small);
}
#motion-toggle {
  background: var(--surface);
  color: var(--ink);
  padding: 10px 14px;
  min-height: 44px;
}
.hero-bottom {
  position: absolute;
  bottom: 35px;
  left: var(--gap);
  right: var(--gap);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--small);
  color: var(--muted);
}
.hero-bottom > span {
  font-size: clamp(18px, 2vw, 28px);
  letter-spacing: -0.04em;
  color: var(--ink);
}
.section {
  padding: 140px var(--gap);
  scroll-margin-top: 20px;
}
.concept {
  background: var(--surface);
}
.concept-heading {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  align-items: end;
  gap: 9%;
}
.concept-heading p,
.section-heading > p {
  max-width: 420px;
  line-height: 1.95;
  color: var(--muted);
}
.connection-story {
  display: grid;
  grid-template-columns: 1fr 0.32fr 1.3fr;
  align-items: center;
  gap: 0;
  margin: 90px auto 26px;
  max-width: 1160px;
}
.meishi {
  position: relative;
  padding: 40px;
  background: var(--paper);
  color: var(--paper-ink);
  min-height: 270px;
  transform: rotate(-8deg);
  aspect-ratio: 1.7;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.meishi p {
  font-size: var(--small);
}
.meishi strong {
  font-size: var(--lead);
  margin: 18px 0 4px;
}
.meishi small {
  margin-top: 22px;
  color: var(--paper-ink);
}
.meishi-mark {
  display: flex;
  position: absolute;
  right: 28px;
  top: 28px;
  gap: 4px;
  transform: rotate(-45deg);
}
.meishi-mark span {
  display: block;
  width: 12px;
  height: 22px;
  background: var(--accent);
}
.meishi-mark span + span {
  margin-top: 10px;
}
.connection-path svg {
  width: 100%;
  height: 180px;
  overflow: visible;
  fill: var(--accent-light);
  stroke: var(--accent-light);
  stroke-width: 2;
  stroke-dasharray: 4 8;
}
.connection-path path {
  fill: none;
}
.contact-fragment {
  background: var(--surface-raised);
  padding: 36px;
  min-height: 320px;
}
.fragment-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 28px;
  font-size: var(--small);
  color: var(--muted);
}
.state {
  padding: 3px 8px;
  white-space: nowrap;
  font-size: var(--small);
  background: var(--paper);
  color: var(--paper-ink);
}
.contact-fragment > strong {
  display: block;
  font-size: var(--lead);
  line-height: 1.5;
}
dl {
  margin: 28px 0 0;
  font-size: var(--body);
}
dl > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  margin-top: 14px;
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
}
.sample-caption {
  font-size: var(--small);
  color: var(--muted);
  margin-top: 32px;
  max-width: 900px;
  line-height: 1.8;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12%;
  margin-bottom: 72px;
}
.section-heading > h2 {
  flex-shrink: 0;
}
.experience {
  background: var(--ground);
}
.demo-layout {
  display: grid;
  grid-template-columns: 1fr 1.55fr;
  gap: 80px;
  align-items: center;
  max-width: 1200px;
  margin-inline: auto;
}
.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.demo-steps button {
  text-align: left;
  padding: 28px;
  background: transparent;
  color: var(--muted);
  position: relative;
  min-width: 0;
}
.demo-steps button[aria-selected="true"] {
  background: var(--accent);
  color: var(--ink);
}
.demo-steps strong {
  display: block;
  font-size: var(--lead);
  font-weight: 500;
  letter-spacing: -0.04em;
}
.demo-steps span {
  display: block;
  font-size: var(--body);
  margin-top: 10px;
  line-height: 1.8;
}
.demo-stage {
  min-width: 0;
  position: relative;
  background: var(--surface);
  min-height: 540px;
  display: flex;
  align-items: stretch;
  overflow: clip;
}
.demo-panel {
  padding: 36px;
  width: 100%;
  animation: panel-enter 0.5s var(--ease);
}
.demo-panel > p {
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.9;
}
.demo-panel .fragment-top {
  margin-bottom: 24px;
}
.signal-art {
  height: 185px;
  background: #1a2b63;
  position: relative;
  overflow: hidden;
  margin-bottom: 24px;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 18px;
  padding-inline: 10%;
  perspective: 600px;
}
.building {
  background: #9cb5ff;
  width: 90px;
  height: 110px;
  transform: skewY(-15deg);
  position: relative;
}
.building::before {
  content: "";
  position: absolute;
  inset: 12px 12px;
  background: #244999;
  clip-path: polygon(
    0 0,
    15% 0,
    15% 100%,
    0 100%,
    0 0,
    35% 0,
    50% 0,
    50% 100%,
    35% 100%,
    35% 0,
    70% 0,
    85% 0,
    85% 100%,
    70% 100%
  );
}
.b1 {
  height: 75px;
}
.b2 {
  height: 150px;
  background: #d7e1ff;
}
.b3 {
  height: 100px;
}
.signal-beam {
  position: absolute;
  height: 260px;
  width: 120px;
  background: #3865f3;
  transform: rotate(40deg);
  top: -200px;
  left: 0;
  mix-blend-mode: screen;
  animation: signal-sweep 7s var(--ease) infinite;
}
.source-note {
  background: var(--surface-raised);
  padding: 14px 18px;
  color: var(--muted);
  margin-top: 24px;
  font-size: var(--small);
}
.match-art {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 185px;
  margin-bottom: 24px;
  background: #1a2b63;
}
.match-art span {
  display: flex;
  width: 105px;
  height: 100px;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  transform: rotate(-9deg);
  font-size: var(--lead);
  position: relative;
}
.match-art span:nth-child(2) {
  background: var(--paper);
  color: var(--paper-ink);
  z-index: 1;
  transform: translateY(-16px);
}
.match-art span:nth-child(3) {
  transform: rotate(9deg);
}
.mail-to {
  margin-bottom: 22px;
}
.demo-panel .draft-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}
.draft-controls span {
  background: var(--surface-raised);
  padding: 8px 12px;
  font-size: var(--small);
}
.demo-panel dl > div {
  grid-template-columns: 100px 1fr;
}
.control {
  background: var(--paper);
  color: var(--paper-ink);
}
.control .section-heading > p {
  color: var(--paper-ink);
}
.control-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 10%;
  max-width: 1180px;
  margin: auto;
}
.approval-fragment {
  background: #dce5fa;
  padding: 32px;
}
.approval-fragment .fragment-top {
  color: var(--paper-ink);
}
.approval-fragment .state {
  background: var(--paper-ink);
  color: var(--paper);
}
.review-row {
  display: flex;
  align-items: center;
  gap: 22px;
  margin: 28px 0;
}
.check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  background: var(--accent);
  color: var(--ink);
  font-size: 22px;
}
.review-row p {
  font-size: var(--small);
  margin-top: 4px;
}
.approval-footer {
  background: var(--paper-ink);
  color: var(--paper);
  padding: 16px;
  font-size: var(--small);
  margin-top: 35px;
}
.control-copy p {
  margin: 28px 0;
  font-size: var(--lead);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: -0.025em;
}
.control-copy p::before {
  content: "";
  display: block;
  background: var(--accent);
  width: 28px;
  height: 8px;
  margin-bottom: 16px;
}
.questions {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 10%;
  align-items: start;
}
.questions h2 {
  position: sticky;
  top: 60px;
}
.faq-list {
  min-width: 0;
}
.faq-list details {
  background: var(--surface);
  margin-bottom: 10px;
  transition: background-color 0.25s var(--ease);
}
.faq-list details[open] {
  background: var(--surface-raised);
}
summary {
  list-style: none;
  cursor: pointer;
  font-weight: 500;
  padding: 26px 64px 26px 28px;
  position: relative;
  line-height: 1.8;
  font-size: var(--body);
}
summary::-webkit-details-marker {
  display: none;
}
summary::before,
summary::after {
  content: "";
  position: absolute;
  right: 26px;
  top: 38px;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease);
}
summary::after {
  transform: rotate(90deg);
}
details[open] summary::after {
  transform: rotate(0);
}
details > p {
  padding: 0 28px 28px;
  font-size: var(--body);
  color: var(--muted);
  line-height: 1.9;
}
.closing {
  position: relative;
  background: var(--accent);
  overflow: clip;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12%;
  min-height: 590px;
}
.closing > div {
  position: relative;
  z-index: 1;
}
.closing h2 {
  font-size: clamp(38px, 5.5vw, 84px);
  letter-spacing: -0.06em;
}
.closing .button {
  margin-top: 48px;
}
.closing p {
  margin-top: 22px;
  font-size: var(--small);
}
.closing-mark {
  width: 33%;
  max-width: 400px;
  flex-shrink: 0;
  color: #214ccf;
  transform: rotate(-13deg);
}
footer {
  padding: 50px var(--gap);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  font-size: var(--small);
  color: var(--muted);
}
footer .wordmark {
  color: var(--ink);
}
dialog {
  border: 0;
  background: var(--surface);
  color: var(--ink);
  padding: 64px 40px 40px;
  width: 580px;
  max-width: calc(100% - 32px);
}
dialog::backdrop {
  background: rgba(0, 0, 0, 0.8);
}
dialog h2 {
  font-size: var(--lead);
  line-height: 1.6;
  margin-bottom: 20px;
}
dialog p {
  color: var(--muted);
  line-height: 1.9;
}
.dialog-note {
  margin: 20px 0 28px;
  font-size: var(--small);
}
.dialog-close {
  position: absolute;
  top: 12px;
  right: 16px;
  color: var(--ink);
  background: none;
  min-width: 44px;
  min-height: 44px;
  font-size: 28px;
}
[data-reveal] {
  opacity: 1;
  transform: none;
}
.motion-ready [data-reveal] {
  transition:
    opacity 0.8s var(--ease),
    transform 0.8s var(--ease);
}
.motion-ready [data-reveal]:not(.revealed) {
  opacity: 0;
  transform: translateY(22px);
}
.hero-copy [data-reveal]:nth-child(2) {
  transition-delay: 0.1s;
}
.hero-copy [data-reveal]:nth-child(3) {
  transition-delay: 0.2s;
}
.hero-copy [data-reveal]:nth-child(4) {
  transition-delay: 0.3s;
}
@keyframes panel-enter {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes signal-sweep {
  0%,
  20% {
    transform: translateX(-160px) rotate(40deg);
  }
  70%,
  100% {
    transform: translate(700px, 260px) rotate(40deg);
  }
}
@media (min-width: 1800px) {
  :root {
    --gap: max(80px, calc((100vw - 1600px) / 2));
  }
  .hero-art {
    right: 2%;
    left: 44%;
  }
}
@media (max-width: 1100px) {
  .site-header {
    gap: 20px;
  }
  .site-header nav {
    gap: 20px;
  }
  .header-actions {
    gap: 16px;
  }
  .hero {
    min-height: 800px;
  }
  .hero-copy {
    width: 58%;
  }
  .hero-art {
    left: 32%;
    right: -20%;
  }
  .orbit-caption {
    right: 23%;
    bottom: 18%;
    flex-direction: column;
    gap: 8px;
    align-items: end;
  }
  .concept-heading {
    grid-template-columns: 1.4fr 1fr;
    gap: 5%;
  }
  .connection-story {
    grid-template-columns: 1fr 0.15fr 1.3fr;
  }
  .meishi {
    padding: 26px;
  }
  .contact-fragment {
    padding: 28px;
  }
  .demo-layout {
    gap: 32px;
    grid-template-columns: 1fr 1.4fr;
  }
  .demo-steps button {
    padding: 24px 18px;
  }
  .demo-panel {
    padding: 28px;
  }
  .section-heading {
    gap: 6%;
  }
  .control-layout {
    gap: 6%;
  }
  .questions {
    gap: 5%;
    grid-template-columns: 1fr 1.6fr;
  }
  dl > div {
    grid-template-columns: 90px 1fr;
    font-size: var(--small);
  }
}
@media (max-width: 800px) {
  .site-header {
    height: 84px;
  }
  .site-header nav {
    display: none;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--surface);
    padding: 24px var(--gap);
    flex-direction: column;
    align-items: start;
    gap: 0;
  }
  .site-header nav.is-open {
    display: flex;
  }
  .site-header nav a {
    padding: 14px 0;
    font-size: var(--body);
    width: 100%;
  }
  .menu-button {
    display: block;
  }
  .site-header .header-cta {
    display: none;
  }
  .header-actions {
    gap: 10px;
  }
  .hero {
    min-height: 1060px;
    max-height: none;
    height: auto;
    justify-content: start;
    padding-top: 65px;
    padding-bottom: 80px;
  }
  .hero-copy {
    width: 100%;
    max-width: 640px;
  }
  .hero h1 {
    font-size: clamp(44px, 9vw, 72px);
  }
  .hero-description {
    max-width: 470px;
    margin-top: 26px;
  }
  .hero-art {
    top: 430px;
    left: 0;
    right: 0;
    bottom: 80px;
    min-height: 450px;
  }
  .orbit-caption {
    bottom: 7%;
    right: var(--gap);
    flex-direction: row;
    align-items: center;
  }
  .hero-bottom {
    bottom: 24px;
  }
  .hero-note {
    margin-top: 20px;
  }
  .section {
    padding: 100px var(--gap);
  }
  .concept-heading {
    display: block;
  }
  .concept-heading > p {
    margin-top: 30px;
    max-width: 580px;
  }
  .connection-story {
    margin-top: 70px;
    grid-template-columns: 1fr 1.3fr;
    gap: 32px;
    align-items: center;
  }
  .connection-path {
    display: none;
  }
  .meishi {
    min-height: 230px;
  }
  .contact-fragment {
    min-height: 300px;
  }
  .fragment-top {
    gap: 12px;
    flex-wrap: wrap;
  }
  .section-heading {
    display: block;
    margin-bottom: 48px;
  }
  .section-heading > p {
    margin-top: 28px;
    max-width: 580px;
  }
  .demo-layout {
    display: block;
  }
  .demo-steps {
    flex-direction: row;
    gap: 8px;
    margin-bottom: 16px;
  }
  .demo-steps button {
    padding: 18px;
    flex: 1;
    min-height: 76px;
  }
  .demo-steps strong {
    font-size: var(--body);
  }
  .demo-steps span {
    display: none;
  }
  .demo-stage {
    min-height: 510px;
  }
  .demo-panel {
    padding: 30px;
  }
  .control-layout {
    gap: 42px;
    grid-template-columns: 1.2fr 1fr;
  }
  .control-copy p {
    font-size: var(--body);
  }
  .approval-fragment {
    padding: 24px;
  }
  .questions {
    display: block;
  }
  .questions h2 {
    position: static;
    margin-bottom: 40px;
  }
  .closing {
    padding-block: 100px;
    min-height: 500px;
  }
  .closing h2 {
    font-size: clamp(38px, 6vw, 58px);
  }
  .closing-mark {
    width: 30%;
    position: absolute;
    right: -5%;
    top: 20%;
    opacity: 0.65;
  }
  .closing > div {
    max-width: 90%;
  }
  footer {
    padding-block: 40px;
    gap: 20px;
  }
  footer p {
    width: 100%;
    order: 2;
  }
}
@media (max-width: 520px) {
  :root {
    --gap: 24px;
    --heading: 32px;
    --lead: 22px;
  }
  .wordmark {
    gap: 9px;
    font-size: var(--small);
  }
  .wordmark svg {
    width: 30px;
    height: 30px;
  }
  .header-actions {
    gap: 8px;
  }
  .language-button {
    font-size: var(--small);
  }
  .hero {
    min-height: 850px;
    padding-top: 46px;
    padding-bottom: 70px;
  }
  .hero h1 {
    font-size: 44px;
    line-height: 1.3;
  }
  .hero-description {
    max-width: 310px;
    margin-top: 24px;
    font-size: var(--body);
    line-height: 1.9;
  }
  .hero .button {
    margin-top: 28px;
  }
  .hero-note {
    max-width: 310px;
    font-size: var(--small);
  }
  .button {
    gap: 30px;
    padding: 16px 22px;
    min-height: 56px;
  }
  .hero-art {
    top: 350px;
    left: -16%;
    right: -16%;
    bottom: 74px;
    min-height: 360px;
  }
  .orbit-caption {
    bottom: 5%;
    right: 15%;
    left: 15%;
    justify-content: space-between;
    font-size: 13px;
    gap: 10px;
  }
  .orbit-caption > span {
    max-width: 180px;
  }
  .orbit-caption button {
    font-size: 13px;
    white-space: nowrap;
    padding: 10px;
  }
  .hero-bottom > span {
    font-size: 18px;
  }
  .hero-bottom > a {
    font-size: 13px;
  }
  .section {
    padding-block: 80px;
  }
  .concept h2 {
    font-size: 30px;
    letter-spacing: -0.055em;
  }
  .concept-heading > p {
    font-size: var(--body);
    line-height: 1.9;
  }
  .connection-story {
    display: flex;
    flex-direction: column;
    gap: 48px;
    margin-top: 65px;
  }
  .meishi {
    width: 90%;
    padding: 30px;
    min-height: 220px;
    aspect-ratio: 1.6;
    align-self: center;
  }
  .contact-fragment {
    width: 100%;
    min-height: 310px;
    padding: 24px;
  }
  .contact-fragment > strong {
    font-size: 22px;
  }
  .fragment-top {
    font-size: var(--small);
  }
  dl > div {
    grid-template-columns: 92px 1fr;
    gap: 12px;
  }
  .sample-caption {
    margin-top: 24px;
  }
  .section-heading {
    margin-bottom: 38px;
  }
  .section-heading > p {
    line-height: 1.9;
  }
  .demo-steps button {
    padding: 14px 10px;
    min-height: 76px;
  }
  .demo-steps strong {
    font-size: 14px;
    line-height: 1.6;
  }
  .demo-panel {
    padding: 24px;
  }
  .demo-stage {
    min-height: 560px;
  }
  .demo-panel h3 {
    font-size: 22px;
    letter-spacing: -0.045em;
  }
  .demo-panel dl > div {
    grid-template-columns: 90px 1fr;
  }
  .signal-art,
  .match-art {
    height: 160px;
  }
  .match-art span {
    width: 84px;
    height: 84px;
    font-size: 20px;
  }
  .demo-panel .fragment-top .state {
    font-size: 13px;
  }
  .source-note {
    font-size: var(--small);
    padding: 12px;
  }
  .control-layout {
    display: flex;
    flex-direction: column;
    gap: 35px;
  }
  .approval-fragment {
    width: 100%;
    padding: 22px;
  }
  .review-row {
    gap: 16px;
  }
  .review-row strong {
    font-size: var(--body);
  }
  .review-row p {
    line-height: 1.8;
  }
  .control-copy {
    width: 100%;
  }
  .control-copy p {
    font-size: 20px;
    margin: 32px 0;
  }
  .questions summary {
    padding: 23px 48px 23px 22px;
    font-size: 16px;
  }
  .questions summary::before,
  .questions summary::after {
    right: 20px;
    top: 36px;
    width: 14px;
  }
  .questions details > p {
    padding: 0 22px 24px;
  }
  .closing {
    padding-block: 85px;
    min-height: 450px;
  }
  .closing h2 {
    font-size: 38px;
    line-height: 1.3;
  }
  .closing-mark {
    width: 60%;
    right: -27%;
    top: 25%;
    opacity: 0.8;
  }
  .closing .button {
    margin-top: 36px;
  }
  .closing > div {
    max-width: 100%;
  }
  footer {
    padding: 34px var(--gap);
    gap: 20px;
  }
  footer > a:last-child {
    margin-left: auto;
  }
  dialog {
    padding: 60px 26px 28px;
  }
  dialog h2 {
    font-size: 23px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .motion-ready [data-reveal]:not(.revealed) {
    opacity: 1;
    transform: none;
  }
}

.dialog-open {
  overflow: hidden;
}
.motion-paused .signal-beam {
  animation-play-state: paused;
}

.check svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.orbit-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.button:hover,
button:hover {
  opacity: 1;
}
.button:hover {
  transform: translateY(-2px);
}

@media (min-width: 521px) and (max-width: 800px) {
  .connection-story {
    grid-template-columns: minmax(0, 1fr);
    gap: 56px;
  }
  .connection-story .meishi {
    width: 80%;
    max-width: 490px;
    justify-self: start;
  }
  .contact-fragment {
    width: 100%;
  }
  .contact-fragment dl > div {
    grid-template-columns: 120px 1fr;
  }
}
@media (max-width: 520px) {
  .hero-bottom > span {
    white-space: nowrap;
  }
  .hero-bottom > a {
    display: none;
  }
}