:root {
  --navy-950: #071827;
  --navy-900: #0b2037;
  --navy-800: #123554;
  --blue-600: #167ca6;
  --cyan-400: #4bc6d0;
  --cyan-200: #b9edf0;
  --cream-50: #fbfaf6;
  --sand-100: #f1eee5;
  --white: #ffffff;
  --text: #182734;
  --muted: #5d6a74;
  --line: #dfe5e7;
  --shadow: 0 20px 60px rgba(7, 24, 39, 0.1);
  --radius-lg: 28px;
  --radius-md: 18px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--cream-50);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.narrow {
  max-width: 860px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 9999;
  padding: 10px 16px;
  color: var(--white);
  background: var(--navy-950);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.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;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: 78px;
  color: var(--white);
  transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.scrolled,
.site-header.menu-active {
  background: rgba(7, 24, 39, 0.94);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  flex: 0 0 auto;
  border-radius: 12px;
}

.brand-name {
  font-size: 1.08rem;
  font-weight: 750;
  letter-spacing: 0.03em;
}

.global-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.global-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 0.2s ease;
}

.global-nav a:not(.nav-contact)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -7px;
  height: 2px;
  background: var(--cyan-400);
  transition: right 0.2s ease;
}

.global-nav a:hover,
.global-nav a:focus-visible {
  color: var(--white);
}

.global-nav a:hover::after,
.global-nav a:focus-visible::after {
  right: 0;
}

.nav-contact {
  padding: 9px 17px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
}

.nav-contact:hover,
.nav-contact:focus-visible {
  background: rgba(255, 255, 255, 0.12);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-line {
  display: block;
  width: 23px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 760px;
  padding: 145px 0 100px;
  color: var(--white);
  background:
    radial-gradient(circle at 74% 32%, rgba(75, 198, 208, 0.13), transparent 25%),
    linear-gradient(135deg, var(--navy-950) 0%, var(--navy-900) 52%, #123b52 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.6) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: linear-gradient(to right, transparent, black 55%, black);
}

.hero-inner {
  position: relative;
  z-index: 3;
}

.eyebrow,
.section-label {
  margin: 0 0 18px;
  color: var(--blue-600);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.19em;
}

.eyebrow {
  color: var(--cyan-400);
}

.section-label.light {
  color: var(--cyan-200);
}

.hero h1 {
  /* max-width: 820px; */
  margin: 0;
  font-size: clamp(2.55rem, 5.5vw, 5.3rem);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.hero-lead {
  max-width: 720px;
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: clamp(1rem, 1.3vw, 1.15rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--navy-950);
  background: var(--cyan-400);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #76d8df;
}

.button-secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.04);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.1);
}

.button-light {
  color: var(--navy-950);
  background: var(--white);
}

.disabled-link {
  opacity: 0.7;
  cursor: default;
  pointer-events: none;
}

.hero-visual {
  position: absolute;
  z-index: 1;
  right: -4vw;
  bottom: 50px;
  width: min(44vw, 610px);
  height: 500px;
  opacity: 0.95;
}

.structure {
  position: absolute;
  right: 8%;
  bottom: 14%;
  width: 70%;
  height: 54%;
  transform: perspective(700px) rotateY(-14deg) rotateX(5deg);
  transform-style: preserve-3d;
}

.structure-layer {
  position: absolute;
  inset-inline: 0;
  height: 33.33%;
  border: 1px solid rgba(185, 237, 240, 0.22);
  background: linear-gradient(100deg, rgba(75, 198, 208, 0.04), rgba(75, 198, 208, 0.18));
  box-shadow: inset 0 0 28px rgba(75, 198, 208, 0.05);
}

.layer-1 { top: 0; }
.layer-2 { top: 33.33%; }
.layer-3 { top: 66.66%; }

.void {
  position: absolute;
  left: 50%;
  top: 37%;
  width: 20%;
  height: 25%;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 50%;
  background: rgba(7, 24, 39, 0.76);
  box-shadow: 0 0 40px rgba(75, 198, 208, 0.18);
}

.detector {
  position: absolute;
  bottom: 4%;
  width: 110px;
  height: 72px;
  border: 1px solid rgba(185, 237, 240, 0.5);
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(75, 198, 208, 0.28), rgba(18, 53, 84, 0.85));
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25), inset 0 0 18px rgba(75, 198, 208, 0.12);
}

.detector::before,
.detector::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  height: 8px;
  border: 1px solid rgba(185, 237, 240, 0.45);
  border-radius: 3px;
}

.detector::before { top: 18px; }
.detector::after { top: 42px; }
.detector-a { left: 18%; }
.detector-b { right: 18%; }

.scan-line {
  position: absolute;
  top: -10%;
  width: 2px;
  height: 96%;
  background: linear-gradient(to bottom, transparent 0%, var(--cyan-400) 15%, rgba(75, 198, 208, 0.5) 78%, transparent 100%);
  box-shadow: 0 0 12px rgba(75, 198, 208, 0.7);
  transform-origin: bottom;
  animation: pulse-line 3s ease-in-out infinite;
}

.scan-line::after {
  content: "";
  position: absolute;
  bottom: 3%;
  left: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--white);
  transform: translateX(-50%);
  box-shadow: 0 0 14px var(--cyan-400);
}

.scan-line-a { left: 35%; transform: rotate(-9deg); }
.scan-line-b { left: 56%; transform: rotate(4deg); animation-delay: -1s; }
.scan-line-c { left: 75%; transform: rotate(10deg); animation-delay: -2s; }

.hero-particles span {
  position: absolute;
  z-index: 2;
  top: -30px;
  width: 2px;
  height: 90px;
  background: linear-gradient(to bottom, transparent, rgba(185, 237, 240, 0.8), transparent);
  animation: fall 8s linear infinite;
}

.hero-particles span:nth-child(1) { left: 12%; animation-delay: -1s; }
.hero-particles span:nth-child(2) { left: 31%; animation-delay: -5s; animation-duration: 10s; }
.hero-particles span:nth-child(3) { left: 54%; animation-delay: -2s; }
.hero-particles span:nth-child(4) { left: 76%; animation-delay: -7s; animation-duration: 12s; }
.hero-particles span:nth-child(5) { left: 91%; animation-delay: -3s; animation-duration: 9s; }

@keyframes fall {
  from { transform: translateY(-120px) rotate(3deg); opacity: 0; }
  15% { opacity: 0.7; }
  85% { opacity: 0.7; }
  to { transform: translateY(900px) rotate(3deg); opacity: 0; }
}

@keyframes pulse-line {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

.section {
  padding: 110px 0;
}

.section-tinted {
  background: var(--sand-100);
}

.section h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.large-text {
  margin: 34px 0 20px;
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  font-weight: 650;
  line-height: 1.7;
}

.narrow > p:last-child {
  color: var(--muted);
}

.section-intro {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 52px;
}

.business-card {
  position: relative;
  min-height: 390px;
  padding: 34px 30px;
  background: var(--white);
  border: 1px solid rgba(18, 53, 84, 0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 30px rgba(7, 24, 39, 0.04);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.business-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.card-number {
  color: rgba(22, 124, 166, 0.22);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.business-card h3 {
  margin: 28px 0 12px;
  font-size: 1.3rem;
  line-height: 1.5;
}

.business-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.card-icon {
  position: relative;
  width: 100%;
  height: 120px;
  margin-top: 18px;
  border-radius: 14px;
  background: linear-gradient(145deg, #edf8f9, #f8fbfb);
  overflow: hidden;
}

.card-icon-scan span {
  position: absolute;
  top: -15px;
  width: 2px;
  height: 100px;
  background: var(--cyan-400);
  transform: rotate(14deg);
}

.card-icon-scan span:nth-child(1) { left: 25%; }
.card-icon-scan span:nth-child(2) { left: 50%; }
.card-icon-scan span:nth-child(3) { left: 75%; }

.card-icon-scan::after {
  content: "";
  position: absolute;
  left: 18%;
  right: 18%;
  bottom: 18px;
  height: 28px;
  border: 2px solid var(--navy-800);
  border-radius: 6px;
  background: rgba(18, 53, 84, 0.08);
}

.card-icon-infra::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 17px;
  height: 78px;
  border-radius: 50% 50% 8px 8px;
  background: var(--navy-800);
}

.card-icon-infra::after {
  content: "";
  position: absolute;
  left: 31%;
  right: 31%;
  bottom: 17px;
  height: 50px;
  border-radius: 50% 50% 0 0;
  background: #f6faf9;
}

.card-icon-infra span {
  position: absolute;
  z-index: 2;
  left: 58%;
  top: 32px;
  width: 24px;
  height: 20px;
  border: 2px solid var(--cyan-400);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(75, 198, 208, 0.6);
}

.card-icon-education::before {
  content: "";
  position: absolute;
  left: 15%;
  top: 18px;
  width: 46%;
  height: 70px;
  border: 3px solid var(--navy-800);
  border-radius: 7px;
}

.card-icon-education span:nth-child(1) {
  position: absolute;
  left: 25%;
  top: 38px;
  width: 27%;
  height: 2px;
  background: var(--cyan-400);
  box-shadow: 0 14px 0 var(--cyan-400), 0 28px 0 var(--cyan-400);
}

.card-icon-education span:nth-child(2) {
  position: absolute;
  right: 16%;
  bottom: 17px;
  width: 58px;
  height: 58px;
  border-radius: 50% 50% 42% 42%;
  background: var(--navy-800);
}

.mvv-section {
  color: var(--white);
  background:
    radial-gradient(circle at 15% 20%, rgba(75, 198, 208, 0.12), transparent 27%),
    var(--navy-900);
}

.mvv-list {
  margin-top: 54px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.mvv-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 42px;
  padding: 45px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.mvv-name {
  margin: 5px 0 0;
  color: var(--cyan-400);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.mvv-item h3 {
  margin: 0 0 12px;
  font-size: clamp(1.3rem, 2.6vw, 2.1rem);
  line-height: 1.5;
}

.mvv-item p:not(.mvv-name) {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.values-grid h3 {
  color: var(--cyan-200);
  font-size: 1.1rem;
}

.values-grid p {
  font-size: 0.9rem;
}

.company-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.25fr;
  gap: 90px;
  align-items: start;
}

.company-message {
  max-width: 430px;
  margin-top: 28px;
  color: var(--muted);
}

.company-table {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-table > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.company-table dt {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
}

.company-table dd {
  margin: 0;
}

.contact-section {
  padding: 100px 0;
  color: var(--white);
  text-align: center;
  background: linear-gradient(135deg, #146e8c, var(--navy-800));
}

.contact-inner p:not(.section-label) {
  margin: 22px auto 34px;
  color: rgba(255, 255, 255, 0.78);
}

.site-footer {
  padding: 1px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--navy-950);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-brand {
  color: var(--white);
}

.site-footer p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 900px) {
  .menu-button {
    display: block;
    position: relative;
    z-index: 2;
  }

  .menu-button[aria-expanded="true"] .menu-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-line:nth-child(2) {
    opacity: 0;
  }

  .menu-button[aria-expanded="true"] .menu-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .global-nav {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 26px;
    padding: 90px 10vw;
    background: rgba(7, 24, 39, 0.98);
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }

  .global-nav.is-open {
    transform: translateX(0);
  }

  .global-nav a {
    font-size: 1.2rem;
  }

  .hero {
    min-height: 720px;
  }

  .hero-inner {
    padding-bottom: 155px;
  }

  .hero-visual {
    right: -13%;
    bottom: -20px;
    width: 560px;
    height: 350px;
    opacity: 0.58;
  }

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

  .business-card {
    display: grid;
    grid-template-columns: 170px 1fr;
    grid-template-rows: auto auto 1fr;
    column-gap: 28px;
    min-height: auto;
  }

  .card-number {
    grid-column: 2;
  }

  .card-icon {
    grid-row: 1 / 4;
    width: 170px;
    height: 150px;
    margin: 0;
  }

  .business-card h3 {
    grid-column: 2;
    margin-top: 10px;
  }

  .business-card p {
    grid-column: 2;
  }

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

  .company-layout {
    grid-template-columns: 1fr;
    gap: 45px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .site-header {
    height: 68px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand-name {
    font-size: 0.98rem;
  }

  .hero {
    min-height: 730px;
    padding-top: 120px;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 12vw, 3.25rem);
  }

  .hero-lead br {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .hero-visual {
    right: -44%;
    width: 530px;
  }

  .section {
    padding: 82px 0;
  }

  .business-card {
    display: block;
    padding: 26px 22px;
  }

  .card-icon {
    width: 100%;
    height: 120px;
    margin-top: 16px;
  }

  .business-card h3 {
    margin-top: 22px;
  }

  .mvv-item {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 34px 0;
  }

  .company-table > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .contact-section {
    padding: 78px 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}
.card-image {
  width: 100%;
  margin: 18px 0 26px;
  overflow: hidden;
  background: #eef6f7;
  border-radius: 14px;
  aspect-ratio: 16 / 9;
}

.card-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}
.no-break {
  white-space: nowrap;
}
.about-title {
  white-space: nowrap;
}

@media (max-width: 900px) {
  .about-title {
    white-space: normal;
  }
}
.footer-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-right p {
  margin: 0;
}

.footer-image {
  width: 80px;
  height: auto;
  display: block;
  object-fit: contain;
}
.header-logo {
  width: 250px;
  height: auto;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}
.footer-logo {
  width: 200px;
  height: auto;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}
@media (max-width: 680px) {
  .header-logo {
    width: 200px;
    height: auto;
  }
  .footer-logo {
    width: 180px;
    height: auto;
  }
}