:root {
  color-scheme: dark;
  --bg: #07090a;
  --panel: #0d1113;
  --panel-soft: #111719;
  --ink: #f2f0e8;
  --muted: #a8b2af;
  --line: rgba(242, 240, 232, 0.14);
  --cyan: #18d8e5;
  --cyan-soft: #7ff5f7;
  --teal: #12a89c;
  --shadow: rgba(0, 0, 0, 0.44);
  font-family:
    Inter, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP",
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  background:
    linear-gradient(115deg, rgba(9, 13, 14, 0.96) 0%, rgba(8, 10, 11, 0.98) 52%, #040506 100%),
    var(--bg);
  color: var(--ink);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.74), transparent 78%);
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 4px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 76px;
  padding: 0 48px;
  border-bottom: 1px solid rgba(242, 240, 232, 0.08);
  background: rgba(7, 9, 10, 0.72);
  backdrop-filter: blur(18px);
}

.brand {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 760;
}

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.site-nav a {
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.site-nav a:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.section {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 112px 48px;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 56px;
  align-items: center;
  min-height: 84vh;
  overflow: hidden;
  padding-top: 132px;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  right: 8%;
  bottom: 9%;
  z-index: -1;
  width: 43%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(24, 216, 229, 0.56), transparent);
  box-shadow: 0 0 42px rgba(24, 216, 229, 0.24);
  transform: rotate(-18deg);
}

.hero-copy {
  min-width: 0;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--cyan-soft);
  font-size: 0.78rem;
  font-weight: 780;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  display: flex;
  flex-wrap: wrap;
  column-gap: 0.16em;
  row-gap: 0.08em;
  align-items: baseline;
  margin-bottom: 24px;
  color: var(--ink);
  font-size: 6.45rem;
  font-weight: 810;
  letter-spacing: 0;
  line-height: 0.9;
}

.company-prefix {
  font-size: 0.38em;
  font-weight: 780;
}

.tagline {
  width: min(100%, 680px);
  margin-bottom: 24px;
  color: var(--ink);
  font-size: 2rem;
  font-weight: 760;
  line-height: 1.5;
}

.lead {
  width: min(100%, 680px);
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 2;
}

.hero-actions {
  display: flex;
  align-items: center;
  min-height: 52px;
}

.button-primary,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid rgba(127, 245, 247, 0.54);
  border-radius: 6px;
  font-size: 0.98rem;
  font-weight: 760;
  line-height: 1.2;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.button-primary {
  background: linear-gradient(135deg, rgba(24, 216, 229, 0.95), rgba(18, 168, 156, 0.92));
  color: #041011;
  box-shadow: 0 18px 52px rgba(24, 216, 229, 0.18);
}

.button-secondary {
  background: rgba(242, 240, 232, 0.04);
  color: var(--ink);
}

.button-primary:hover,
.button-secondary:hover {
  border-color: rgba(127, 245, 247, 0.86);
  box-shadow: 0 18px 62px rgba(24, 216, 229, 0.22);
  transform: translateY(-2px);
}

.arc-stage {
  position: relative;
  min-height: 560px;
  overflow: visible;
  perspective: 1100px;
}

.arc-stage::before {
  position: absolute;
  inset: 10% 4% 8%;
  z-index: -1;
  content: "";
  background:
    radial-gradient(ellipse at 54% 48%, rgba(24, 216, 229, 0.16), transparent 46%),
    linear-gradient(140deg, transparent 16%, rgba(242, 240, 232, 0.08) 45%, transparent 67%);
  filter: blur(18px);
  opacity: 0.9;
  transform: rotate(-8deg);
  animation: stage-glow 7.5s ease-in-out infinite alternate;
}

.arc-stage::after {
  position: absolute;
  inset: 18% 6% 12%;
  z-index: -1;
  content: "";
  border: 1px solid rgba(242, 240, 232, 0.08);
  border-radius: 50%;
  transform: rotateX(64deg) rotateZ(-28deg);
  animation: stage-breathe 8s ease-in-out infinite;
}

.stage-grid,
.stage-horizon,
.orbit,
.signal-lines {
  position: absolute;
  inset: 50% auto auto 50%;
  pointer-events: none;
  transform-style: preserve-3d;
}

.stage-grid {
  width: 520px;
  height: 520px;
  background:
    linear-gradient(rgba(127, 245, 247, 0.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 245, 247, 0.11) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.78), transparent 70%);
  opacity: 0.5;
  transform: translate(-50%, -48%) rotateX(62deg) rotateZ(-30deg) translateZ(-160px);
  animation: grid-drift 12s linear infinite;
}

.stage-horizon {
  width: 620px;
  height: 170px;
  border-top: 1px solid rgba(242, 240, 232, 0.16);
  background:
    linear-gradient(90deg, transparent, rgba(24, 216, 229, 0.26), transparent),
    linear-gradient(180deg, rgba(24, 216, 229, 0.06), transparent);
  mask-image: linear-gradient(90deg, transparent, black 18%, black 82%, transparent);
  transform: translate(-52%, -18%) rotateX(68deg) rotateZ(-18deg) translateZ(-130px);
  animation: horizon-scan 5.8s ease-in-out infinite;
}

.cyan-arc,
.cyan-arc::before,
.cyan-arc::after {
  position: absolute;
  inset: 50% auto auto 50%;
  display: block;
  content: "";
  border-radius: 50%;
  transform-style: preserve-3d;
}

.cyan-arc {
  width: 470px;
  height: 470px;
  border: 38px solid transparent;
  border-top-color: rgba(127, 245, 247, 0.98);
  border-right-color: rgba(24, 216, 229, 0.72);
  filter:
    drop-shadow(0 0 24px rgba(24, 216, 229, 0.58))
    drop-shadow(0 0 58px rgba(18, 168, 156, 0.2));
  transform: translate(-48%, -50%) rotateX(62deg) rotateZ(-30deg);
  animation: arc-rotate 18s ease-in-out infinite alternate;
}

.cyan-arc::before {
  width: 390px;
  height: 390px;
  border: 18px solid transparent;
  border-left-color: rgba(18, 168, 156, 0.56);
  border-bottom-color: rgba(127, 245, 247, 0.28);
  filter: blur(1px);
  transform: translate(-50%, -50%) translateZ(-52px) rotateZ(28deg);
  animation: counter-rotate 13s ease-in-out infinite alternate;
}

.cyan-arc::after {
  width: 540px;
  height: 540px;
  border: 1px solid rgba(127, 245, 247, 0.22);
  box-shadow:
    inset 0 0 52px rgba(24, 216, 229, 0.08),
    0 0 76px rgba(24, 216, 229, 0.1);
  transform: translate(-50%, -50%) translateZ(-100px);
}

.orbit {
  border: 1px solid rgba(127, 245, 247, 0.2);
  border-radius: 50%;
  box-shadow:
    inset 0 0 34px rgba(24, 216, 229, 0.07),
    0 0 46px rgba(24, 216, 229, 0.08);
}

.orbit span {
  position: absolute;
  width: 15px;
  height: 15px;
  border: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 24%, #ffffff 0 7%, rgba(216, 255, 255, 0.95) 12%, rgba(127, 245, 247, 0.9) 24%, transparent 33%),
    radial-gradient(circle at 64% 72%, rgba(2, 9, 10, 0.92) 0 13%, transparent 48%),
    conic-gradient(from 230deg, rgba(127, 245, 247, 0.18), rgba(24, 216, 229, 0.94), rgba(7, 73, 76, 0.62), rgba(127, 245, 247, 0.22)),
    rgba(24, 216, 229, 0.54);
  box-shadow:
    inset -4px -5px 8px rgba(2, 8, 9, 0.76),
    inset 3px 3px 6px rgba(255, 255, 255, 0.34),
    inset 0 0 0 1px rgba(242, 240, 232, 0.5),
    0 0 18px rgba(24, 216, 229, 0.64),
    0 0 34px rgba(127, 245, 247, 0.22);
  transform: translateZ(34px);
  transform-style: preserve-3d;
}

.orbit span::before,
.orbit span::after {
  position: absolute;
  content: "";
  border-radius: 50%;
  pointer-events: none;
}

.orbit span::before {
  inset: 2px 3px 6px 3px;
  background: radial-gradient(circle at 28% 18%, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.18) 34%, transparent 62%);
  filter: blur(0.2px);
  transform: translateZ(5px);
}

.orbit span::after {
  right: 1px;
  bottom: -3px;
  width: 76%;
  height: 46%;
  background: rgba(0, 0, 0, 0.42);
  filter: blur(3px);
  transform: rotateX(68deg) translateZ(-8px);
}

.orbit-wide {
  width: 600px;
  height: 600px;
  transform: translate(-52%, -50%) rotateX(66deg) rotateZ(24deg) translateZ(-78px);
  animation: orbit-wide 24s linear infinite;
}

.orbit-wide span:first-child {
  top: 72px;
  left: 94px;
}

.orbit-wide span:last-child {
  right: 106px;
  bottom: 78px;
  width: 11px;
  height: 11px;
  opacity: 0.72;
}

.orbit-tight {
  width: 320px;
  height: 320px;
  border-color: rgba(242, 240, 232, 0.16);
  transform: translate(-46%, -48%) rotateX(58deg) rotateZ(-34deg) translateZ(54px);
  animation: orbit-tight 15s linear infinite reverse;
}

.orbit-tight span:first-child {
  top: 28px;
  right: 58px;
}

.orbit-tight span:last-child {
  left: 30px;
  bottom: 72px;
  width: 10px;
  height: 10px;
  opacity: 0.64;
}

.signal-lines {
  width: 420px;
  height: 300px;
  transform: translate(-48%, -52%) rotateX(64deg) rotateZ(-30deg) translateZ(92px);
}

.signal-lines i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(127, 245, 247, 0.54), transparent);
  box-shadow: 0 0 18px rgba(24, 216, 229, 0.28);
  opacity: 0;
  animation: signal-pass 4.8s ease-in-out infinite;
}

.signal-lines i:nth-child(1) {
  top: 34px;
}

.signal-lines i:nth-child(2) {
  top: 108px;
  animation-delay: 1s;
}

.signal-lines i:nth-child(3) {
  top: 184px;
  animation-delay: 2s;
}

.signal-lines i:nth-child(4) {
  top: 252px;
  animation-delay: 3s;
}

.content-band {
  display: grid;
  grid-template-columns: minmax(250px, 0.78fr) minmax(0, 1.22fr);
  gap: 64px;
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  min-width: 0;
}

h2 {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 2.35rem;
  font-weight: 780;
  letter-spacing: 0;
  line-height: 1.35;
}

.section-text {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 2.05;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 42px;
  border: 1px solid var(--line);
  background: var(--line);
}

.business-item {
  min-width: 0;
  min-height: 278px;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.032), transparent),
    var(--panel);
}

.business-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-height: 76px;
  margin-bottom: 28px;
}

.item-index {
  display: block;
  color: rgba(127, 245, 247, 0.78);
  font-size: 0.82rem;
  font-weight: 780;
}

.business-icon {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border: 1px solid rgba(127, 245, 247, 0.34);
  border-radius: 6px;
  background:
    radial-gradient(circle at 30% 20%, rgba(127, 245, 247, 0.22), transparent 58%),
    rgba(24, 216, 229, 0.055);
  box-shadow:
    inset 0 0 18px rgba(24, 216, 229, 0.08),
    0 14px 36px rgba(0, 0, 0, 0.24);
}

.business-icon::after {
  position: absolute;
  inset: 7px;
  content: "";
  border: 1px solid rgba(242, 240, 232, 0.08);
  border-radius: 4px;
}

.business-icon svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: var(--cyan-soft);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

h3 {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 780;
  letter-spacing: 0;
  line-height: 1.45;
}

.business-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.85;
}

.info-section {
  display: grid;
  grid-template-columns: minmax(250px, 0.78fr) minmax(0, 1.22fr);
  gap: 64px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.info-list {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.info-list div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  min-width: 0;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

dt {
  color: rgba(242, 240, 232, 0.62);
  font-size: 0.92rem;
  font-weight: 760;
  line-height: 1.7;
}

dd {
  min-width: 0;
  margin: 0;
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 620;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

dd a {
  color: var(--cyan-soft);
}

.contact-section {
  display: flex;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}

.contact-copy {
  max-width: 680px;
}

.site-footer {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 28px 48px 42px;
  border-top: 1px solid rgba(242, 240, 232, 0.08);
  color: rgba(242, 240, 232, 0.52);
  font-size: 0.88rem;
  font-weight: 650;
}

.site-footer p {
  margin: 0;
}

@keyframes arc-rotate {
  0% {
    transform: translate(-48%, -50%) rotateX(62deg) rotateZ(-30deg);
  }

  100% {
    transform: translate(-48%, -50%) rotateX(56deg) rotateZ(18deg);
  }
}

@keyframes counter-rotate {
  0% {
    transform: translate(-50%, -50%) translateZ(-52px) rotateZ(28deg);
  }

  100% {
    transform: translate(-50%, -50%) translateZ(-52px) rotateZ(-32deg);
  }
}

@keyframes stage-glow {
  0% {
    opacity: 0.62;
    transform: rotate(-8deg) scale(0.96);
  }

  100% {
    opacity: 1;
    transform: rotate(-4deg) scale(1.04);
  }
}

@keyframes stage-breathe {
  0%,
  100% {
    opacity: 0.46;
    transform: rotateX(64deg) rotateZ(-28deg) scale(0.98);
  }

  50% {
    opacity: 0.82;
    transform: rotateX(62deg) rotateZ(-22deg) scale(1.04);
  }
}

@keyframes grid-drift {
  0% {
    background-position: 0 0;
    transform: translate(-50%, -48%) rotateX(62deg) rotateZ(-30deg) translateZ(-160px);
  }

  100% {
    background-position: 76px 38px;
    transform: translate(-50%, -48%) rotateX(62deg) rotateZ(-18deg) translateZ(-160px);
  }
}

@keyframes horizon-scan {
  0%,
  100% {
    opacity: 0.38;
    transform: translate(-52%, -18%) rotateX(68deg) rotateZ(-18deg) translateZ(-130px) scaleX(0.94);
  }

  50% {
    opacity: 0.8;
    transform: translate(-52%, -18%) rotateX(68deg) rotateZ(-18deg) translateZ(-130px) scaleX(1.04);
  }
}

@keyframes orbit-wide {
  0% {
    transform: translate(-52%, -50%) rotateX(66deg) rotateZ(24deg) translateZ(-78px);
  }

  100% {
    transform: translate(-52%, -50%) rotateX(66deg) rotateZ(384deg) translateZ(-78px);
  }
}

@keyframes orbit-tight {
  0% {
    transform: translate(-46%, -48%) rotateX(58deg) rotateZ(-34deg) translateZ(54px);
  }

  100% {
    transform: translate(-46%, -48%) rotateX(58deg) rotateZ(326deg) translateZ(54px);
  }
}

@keyframes signal-pass {
  0% {
    opacity: 0;
    transform: translateX(-18%) scaleX(0.64);
  }

  18% {
    opacity: 0.88;
  }

  44% {
    opacity: 0.2;
    transform: translateX(18%) scaleX(1);
  }

  100% {
    opacity: 0;
    transform: translateX(24%) scaleX(0.72);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 1040px) {
  .site-header {
    padding: 0 32px;
  }

  .section {
    padding-right: 32px;
    padding-left: 32px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    min-height: auto;
  }

  h1 {
    font-size: 5.2rem;
  }

  .tagline {
    font-size: 1.72rem;
  }

  .arc-stage {
    min-height: 330px;
  }

  .stage-grid {
    width: 390px;
    height: 390px;
    background-size: 30px 30px;
  }

  .stage-horizon {
    width: 460px;
    height: 124px;
  }

  .cyan-arc {
    width: 350px;
    height: 350px;
    border-width: 28px;
  }

  .cyan-arc::before {
    width: 292px;
    height: 292px;
  }

  .cyan-arc::after {
    width: 420px;
    height: 420px;
  }

  .orbit-wide {
    width: 450px;
    height: 450px;
  }

  .orbit-tight {
    width: 244px;
    height: 244px;
  }

  .signal-lines {
    width: 320px;
    height: 218px;
  }

  .signal-lines i:nth-child(1) {
    top: 24px;
  }

  .signal-lines i:nth-child(2) {
    top: 78px;
  }

  .signal-lines i:nth-child(3) {
    top: 132px;
  }

  .signal-lines i:nth-child(4) {
    top: 188px;
  }

  .business-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content-band,
  .info-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: sticky;
    min-height: auto;
    padding: 18px 20px;
    align-items: flex-start;
  }

  .site-nav {
    display: none;
  }

  .section {
    padding: 76px 20px;
  }

  .hero {
    padding-top: 72px;
  }

  h1 {
    font-size: 3.45rem;
  }

  h2 {
    font-size: 1.82rem;
  }

  .tagline {
    font-size: 1.38rem;
  }

  .lead,
  .section-text {
    font-size: 1rem;
    line-height: 1.9;
  }

  .arc-stage {
    min-height: 240px;
    margin-top: -10px;
  }

  .stage-grid {
    width: 292px;
    height: 292px;
    background-size: 24px 24px;
    opacity: 0.42;
  }

  .stage-horizon {
    width: 340px;
    height: 92px;
  }

  .cyan-arc {
    width: 260px;
    height: 260px;
    border-width: 22px;
    transform: translate(-48%, -50%) rotateX(60deg) rotateZ(-28deg);
  }

  .cyan-arc::before {
    width: 216px;
    height: 216px;
    border-width: 13px;
  }

  .cyan-arc::after {
    width: 312px;
    height: 312px;
  }

  .orbit-wide {
    width: 330px;
    height: 330px;
  }

  .orbit-tight {
    width: 186px;
    height: 186px;
  }

  .orbit span {
    width: 9px;
    height: 9px;
  }

  .signal-lines {
    width: 238px;
    height: 164px;
  }

  .signal-lines i:nth-child(1) {
    top: 18px;
  }

  .signal-lines i:nth-child(2) {
    top: 58px;
  }

  .signal-lines i:nth-child(3) {
    top: 100px;
  }

  .signal-lines i:nth-child(4) {
    top: 140px;
  }

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

  .business-item {
    min-height: 220px;
    padding: 24px;
  }

  .business-top {
    min-height: 64px;
    margin-bottom: 24px;
  }

  .business-icon {
    width: 48px;
    height: 48px;
    flex-basis: 48px;
  }

  .info-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact-section {
    align-items: flex-start;
    flex-direction: column;
  }

  .button-primary,
  .button-secondary {
    width: 100%;
  }

  .site-footer {
    padding: 26px 20px 34px;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: 2.95rem;
  }

  .tagline {
    font-size: 1.22rem;
  }
}