:root {
  --color-primary: #00d4ff;
  --color-primary-dark: #00a0c6;
  --color-accent: #e8843c;
  --color-bg: #0a0a0f;
  --color-bg-alt: #12121a;
  --color-surface: rgba(17, 20, 31, 0.84);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #ffffff;
  --color-text-soft: #a0a0b0;
  --color-text-muted: #6b6b7b;
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.18);
  --font-sans: "Noto Sans JP", "Hiragino Sans", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", monospace;
  --content-width: min(1120px, calc(100vw - 32px));
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top right, rgba(0, 160, 198, 0.18), transparent 28%),
    linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
  color: var(--color-text);
  font-family: var(--font-sans);
}

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

img,
picture,
video {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
}

.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;
}

.page-shell {
  position: relative;
  overflow-x: clip;
}

.page-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  background-color: rgba(10, 10, 15, 0.7);
  background-size: 56px 56px;
  pointer-events: none;
}

.site-header {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--content-width);
  margin-inline: auto;
  padding: 20px 0;
}

.site-header__brand img {
  max-width: none;
}


.site-header__toggle {
  position: relative;
  z-index: 45;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  width: 102px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(0, 212, 255, 0.46);
  border-radius: 4px;
  background: rgba(0, 160, 198, 0.96);
  color: var(--color-text);
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: background-color 220ms ease, border-color 220ms ease;
}

.site-header__toggle-label {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  font-weight: 700;
}

.site-header__toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 20px;
}

.site-header__toggle-icon span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 260ms ease, opacity 220ms ease, width 220ms ease;
}

.site-header__toggle-icon span:nth-child(1) {
  width: 20px;
}

.site-header__toggle-icon span:nth-child(2) {
  width: 16px;
}

.site-header__toggle-icon span:nth-child(3) {
  width: 12px;
}

.nav-open .site-header__toggle {
  background: rgba(36, 36, 42, 0.96);
  border-color: rgba(255, 255, 255, 0.2);
}

.nav-open .site-header__toggle-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
  width: 20px;
}

.nav-open .site-header__toggle-icon span:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav-open .site-header__toggle-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
  width: 20px;
}

.site-nav {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 84px 24px 48px;
  min-height: 100dvh;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  background-color: rgba(6, 6, 8, 0.96);
  background-image:
    linear-gradient(rgba(0, 160, 198, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 160, 198, 0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  backdrop-filter: blur(24px);
  clip-path: polygon(100% 0, 100% 0, 100% 100%, 100% 100%);
  pointer-events: none;
  transition: clip-path 700ms cubic-bezier(0.76, 0, 0.24, 1);
}

.site-nav::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(6, 6, 8, 0.92) 80%);
}

.nav-open .site-nav {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: auto;
}

.nav-open,
.nav-open body {
  overflow: hidden;
}

.site-nav__meta,
.section-heading__eyebrow,
.service-card__eyebrow,
.hero__status,
.hero__scroll {
  font-family: var(--font-mono);
}

.site-nav__inner,
.site-nav__list,
.site-nav__toplink {
  position: relative;
  z-index: 2;
}

.site-nav__inner {
  width: min(1020px, calc(100vw - 48px));
  margin: 0 auto;
}

.site-nav__statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 56px;
}

.site-nav__statusleft {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav__statusdot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(0, 160, 198, 1);
  box-shadow: 0 0 12px rgba(0, 160, 198, 0.7);
}

.site-nav__statusright {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.36);
  letter-spacing: 0.08em;
}

.site-nav__statussep {
  color: rgba(0, 160, 198, 0.9);
}

.site-nav__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.site-nav__metaline {
  margin-left: 8px;
  width: 96px;
  height: 1px;
  background: rgba(0, 160, 198, 0.7);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 500ms ease;
}

.nav-open .site-nav__metaline {
  transform: scaleX(1);
}

.site-nav__cursor {
  display: inline-block;
  width: 2px;
  height: 12px;
  background: rgba(0, 160, 198, 0.95);
}

.site-nav__eyebrow,
.site-nav__label,
.section-heading__eyebrow,
.hero__eyebrow,
.hero__status,
.hero__scroll {
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.site-nav__eyebrow,
.hero__eyebrow,
.section-heading__eyebrow {
  color: rgba(0, 212, 255, 0.7);
}

.site-nav__eyebrow,
.site-nav__label {
  margin: 0;
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.42);
}

.site-nav__label,
.hero__status,
.hero__scroll,
.section-heading__sub {
  color: var(--color-text-muted);
}

.site-nav__content {
  width: min(1020px, calc(100vw - 48px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 64px;
}

.site-nav__left {
  flex: 1;
  display: flex;
  align-items: center;
}

.site-nav__list {
  list-style: none;
  width: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  text-align: left;
  padding-left: 0px;
}

.site-nav__list > li {
  margin: 0;
  padding: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  opacity: 0;
  transform: translateY(24px);
  transition: transform 360ms ease, opacity 360ms ease;
}

.nav-open .site-nav__list > li {
  opacity: 1;
  transform: translateY(0);
}

.nav-open .site-nav__list > li:nth-child(1) { transition-delay: 60ms; }
.nav-open .site-nav__list > li:nth-child(2) { transition-delay: 120ms; }
.nav-open .site-nav__list > li:nth-child(3) { transition-delay: 180ms; }
.nav-open .site-nav__list > li:nth-child(4) { transition-delay: 240ms; }
.nav-open .site-nav__list > li:nth-child(5) { transition-delay: 300ms; }
.nav-open .site-nav__list > li:nth-child(6) { transition-delay: 360ms; }

.site-nav__list a {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 14px 0;
  border: 0;
  background: transparent;
  letter-spacing: 0;
  transition: padding-left 220ms ease;
}

.site-nav__list a:hover,
.site-nav__list a[aria-current="true"] {
  border-color: transparent;
  background: transparent;
  padding-left: 8px;
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.28);
  letter-spacing: 0.08em;
}

.site-nav__item-wrap {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.site-nav__item-main {
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  color: rgba(255, 255, 255, 0.64);
  transition: color 220ms ease;
}

.site-nav__item-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.34);
  transition: color 220ms ease;
}

.site-nav__active-marker {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  color: rgba(0, 160, 198, 0.95);
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(0, 160, 198, 0.1);
  opacity: 0;
}

.site-nav__list a[aria-current="true"] .site-nav__active-marker {
  opacity: 1;
}

.site-nav__list a:hover .site-nav__item-main,
.site-nav__list a[aria-current="true"] .site-nav__item-main {
  color: rgba(255, 255, 255, 0.96);
}

.site-nav__list a:hover .site-nav__item-sub,
.site-nav__list a[aria-current="true"] .site-nav__item-sub,
.site-nav__list a[aria-current="true"] .site-nav__index {
  color: rgba(0, 160, 198, 0.92);
}

.site-nav__sublist {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
}

.site-nav__sublist li {
  margin: 0;
}

.site-nav__sublist a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0 8px 54px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.36);
  transition: color 220ms ease, padding-left 220ms ease;
}

.site-nav__sublist a:hover,
.site-nav__sublist a[aria-current="true"] {
  color: rgba(0, 160, 198, 0.92);
  padding-left: 60px;
}

.site-nav__subindex {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: rgba(255, 255, 255, 0.2);
  letter-spacing: 0.08em;
}

.site-nav__right {
  display: none;
}

.site-nav__logo-panel {
  position: relative;
  width: min(320px, 32vw);
  aspect-ratio: 1;
  border: 1px solid rgba(0, 160, 198, 0.16);
  background: linear-gradient(135deg, rgba(0, 160, 198, 0.04) 0%, transparent 55%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-nav__logo-panel img {
  width: 170px;
  height: auto;
  opacity: 0.94;
}

.site-nav__logo-corner {
  position: absolute;
  width: 24px;
  height: 24px;
}

.site-nav__logo-corner--tl {
  top: 0;
  left: 0;
  border-top: 2px solid rgba(0, 160, 198, 0.95);
  border-left: 2px solid rgba(0, 160, 198, 0.95);
}

.site-nav__logo-corner--br {
  right: 0;
  bottom: 0;
  border-right: 2px solid rgba(0, 160, 198, 0.95);
  border-bottom: 2px solid rgba(0, 160, 198, 0.95);
}

.site-nav__sysbar {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.22);
  font-family: var(--font-mono);
  font-size: 0.54rem;
  letter-spacing: 0.1em;
}

.site-nav__sysline {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav__sysline::before {
  content: "";
  display: block;
  width: 30px;
  height: 1px;
  background: rgba(0, 160, 198, 0.36);
}

.site-nav__sysline span {
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: rgba(0, 160, 198, 0.95);
}

.site-nav__rightcopy {
  margin-top: 24px;
  text-align: right;
}

.site-nav__rightcopy p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: rgba(255, 255, 255, 0.24);
  letter-spacing: 0.12em;
  line-height: 1.7;
}

.site-nav__rightcopy span {
  display: block;
  width: 64px;
  height: 1px;
  margin-left: auto;
  margin-top: 10px;
  background: rgba(0, 160, 198, 0.3);
}

.site-nav__toplink {
  width: min(1020px, calc(100vw - 48px));
  margin: 18px auto 0;
  text-align: left;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.56);
  cursor: pointer;
}

.site-nav__toplink:hover {
  color: rgba(0, 160, 198, 0.9);
}

.site-nav__footer {
  width: min(1020px, calc(100vw - 48px));
  margin: auto auto 0;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.site-nav__footer-left {
  display: inline-flex;
  align-items: center;
  gap: 18px;
}

.site-nav__footcopy,
.site-nav__footer-left a {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.3);
}

.site-nav__footer-left a:hover {
  color: rgba(255, 255, 255, 0.58);
}

.site-nav__footer-right {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
}

.site-nav__footer-right span {
  width: 2px;
  border-radius: 999px;
  background: rgba(0, 160, 198, 0.22);
}

.site-nav__footer-right span:nth-child(1) { height: 8px; }
.site-nav__footer-right span:nth-child(2) { height: 11px; }
.site-nav__footer-right span:nth-child(3) { height: 14px; }
.site-nav__footer-right span:nth-child(4) { height: 18px; }

@media (min-width: 1024px) {
  .site-nav__right {
    display: block;
    width: 320px;
    flex: 0 0 320px;
  }
}

.scroll-top-fixed {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 39;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(10, 10, 15, 0.55);
  color: rgba(255, 255, 255, 0.68);
  cursor: pointer;
  transition: border-color 220ms ease, color 220ms ease, background-color 220ms ease;
}

.scroll-top-fixed:hover {
  border-color: rgba(0, 160, 198, 0.86);
  color: rgba(0, 160, 198, 1);
}

.scroll-top-fixed span {
  font-size: 0.95rem;
  line-height: 1;
}

.nav-open .scroll-top-fixed {
  border-color: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.6);
  background: rgba(10, 10, 15, 0.35);
}

main {
  position: relative;
  z-index: 1;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 255, 0.4);
  background: rgba(0, 212, 255, 0.08);
  color: rgba(0, 212, 255, 1);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.button-link:hover {
  transform: translateY(-1px);
  border-color: rgba(0, 212, 255, 0.72);
  background: rgba(0, 212, 255, 0.14);
}

.button-link--ghost {
  background: transparent;
}

.page-hero {
  position: relative;
  padding: 50px 0 100px 0;
}

.page-hero__inner {
  width: min(896px, calc(100vw - 32px));
  margin-inline: auto;
  text-align: center;
}

.page-hero__label-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 14px;
}

.page-hero__line {
  width: 32px;
  height: 1px;
  background: rgba(0, 212, 255, 0.4);
}

.page-hero__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(0, 212, 255, 0.6);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.page-hero__title {
  margin: 0 0 8px;
  font-size: 48px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-hero__subtitle {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.page-section {
  width: var(--content-width);
  margin-inline: auto;
  padding-bottom: 88px;
}

.content-stack {
  display: grid;
  gap: 18px;
}

.content-stack p,
.content-stack li {
  margin: 0;
  color: var(--color-text-soft);
  line-height: 1.9;
}

.content-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.content-card {
  padding: 24px;
}

.content-card h3 {
  margin: 0 0 12px;
}

.link-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.link-card {
  display: grid;
  gap: 8px;
  padding: 24px;
}

.link-card__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  color: rgba(0, 212, 255, 0.72);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.76rem;
}

.link-card p {
  margin: 0;
  color: var(--color-text-soft);
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline__item {
  display: grid;
  gap: 6px;
  padding: 22px 24px;
}

.timeline__year {
  font-family: var(--font-mono);
  color: rgba(0, 212, 255, 0.78);
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

.info-table th,
.info-table td {
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.info-table th {
  width: 180px;
  color: var(--color-text);
  font-weight: 600;
}

.info-table td {
  color: var(--color-text-soft);
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  color: var(--color-text-soft);
}

.section-panel {
  border: 1px solid var(--color-border);
  background: rgba(18, 18, 26, 0.74);
  backdrop-filter: blur(18px);
}

.site-footer {
  position: relative;
  overflow: hidden;
  padding: 40px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background-color: rgb(18 18 26);
  background-image:
    linear-gradient(rgba(22, 22, 35, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 22, 35, 0.3) 1px, transparent 1px);
  background-size: 44px 44px;
}

.site-footer__inner {
  width: var(--content-width);
  margin-inline: auto;
  display: grid;
  gap: 24px;
  justify-items: center;
  text-align: center;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  justify-content: center;
  color: var(--color-text-soft);
  font-size: 12px;
}

.site-footer__nav a {
  color: var(--color-text-muted);
  transition: color 220ms ease;
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: var(--color-primary);
}

.site-footer__copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.section-container {
  margin: 0 auto;
  max-width: 989px;
}

@media (max-width: 767px) {
  .site-header {
    padding-top: 16px;
  }

  .site-nav {
    padding-top: 88px;
  }

  .site-nav__statusright {
    display: none;
  }

  .site-nav__meta {
    margin-bottom: 14px;
  }

  .site-nav__content {
    width: calc(100vw - 48px);
    display: block;
    flex: initial;
  }

  .site-nav__left {
    display: block;
  }

  .site-nav__list a {
    grid-template-columns: 28px 1fr auto;
    gap: 10px;
  }

  .site-nav__active-marker {
    font-size: 0.52rem;
    padding: 3px 6px;
  }

  .site-nav__sublist a {
    padding-left: 42px;
    font-size: 0.8rem;
  }

  .site-nav__sublist a:hover,
  .site-nav__sublist a[aria-current="true"] {
    padding-left: 48px;
  }

  .site-nav__subindex {
    font-size: 0.56rem;
  }

  .site-nav__toplink {
    width: calc(100vw - 48px);
    margin-top: 16px;
  }

  .site-nav__footer {
    width: calc(100vw - 48px);
    padding-top: 12px;
  }

  .site-nav__footer-left {
    gap: 12px;
  }

  .site-nav__footcopy,
  .site-nav__footer-left a {
    font-size: 0.56rem;
  }

  .scroll-top-fixed {
    right: 16px;
    bottom: 16px;
  }

  .page-hero {
    padding: 48px 0 56px;
    padding-top: 86px;
  }

  .page-hero__line {
    width: 24px;
  }

  .page-hero__title {
    font-size: 30px;
  }
}