:root {
  --ink: #171b21;
  --muted: #596372;
  --line: #d9e0e7;
  --surface: #ffffff;
  --surface-soft: #f4f7fb;
  --surface-mint: #eef8f5;
  --blue: #1468d4;
  --blue-dark: #0d4e9f;
  --teal: #14816e;
  --gold: #a76b12;
  --shadow: 0 22px 58px rgba(26, 39, 57, 0.14);
  --max: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, "Noto Sans SC", "Noto Sans JP", "PingFang SC", "Hiragino Sans", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

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

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

.no-break {
  white-space: nowrap;
}

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

button {
  font: inherit;
  letter-spacing: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 300;
  padding: 8px 12px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-150%);
}

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

.container {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(217, 224, 231, 0.9);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  font-weight: 780;
  white-space: nowrap;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.brand-text {
  display: grid;
  line-height: 1.08;
}

.brand-sub {
  margin-top: 4px;
  color: #7a8491;
  font-size: 10px;
  font-weight: 680;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
  color: #3d4653;
  font-size: 14px;
  font-weight: 680;
  white-space: nowrap;
}

.main-nav > a,
.nav-dropdown > button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  border: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.main-nav > a:hover,
.main-nav > a:focus-visible,
.nav-dropdown > button:hover,
.nav-dropdown > button:focus-visible {
  color: var(--blue);
}

.contact-link {
  padding: 0 13px;
  border: 1px solid var(--ink);
  border-radius: 6px;
}

.nav-dropdown {
  position: relative;
}

.nav-caret {
  margin-left: 6px;
  color: #8a94a1;
  font-size: 9px;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: -18px;
  width: 330px;
  display: grid;
  visibility: hidden;
  opacity: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
  transform: translateY(6px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.product-menu {
  left: 50%;
  width: min(640px, calc(100vw - 32px));
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 8px;
  padding: 14px;
  transform: translate(-50%, 6px);
}

.dropdown-group {
  min-width: 0;
}

.product-menu-secondary {
  display: grid;
  align-content: start;
  gap: 14px;
  padding-left: 8px;
  border-left: 1px solid var(--line);
}

.dropdown-group-title {
  margin: 0;
  padding: 5px 12px 7px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.nav-dropdown:hover .product-menu,
.nav-dropdown:focus-within .product-menu {
  transform: translate(-50%, 0);
}

.dropdown-item {
  display: grid;
  gap: 2px;
  padding: 11px 12px;
  border-radius: 5px;
}

.dropdown-item:hover,
.dropdown-item:focus-visible {
  background: var(--surface-soft);
}

.dropdown-item strong {
  font-size: 14px;
}

.dropdown-item span {
  color: var(--muted);
  font-size: 12px;
  white-space: normal;
}

.language-nav {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 12px;
  font-weight: 760;
}

.language-nav a {
  color: #7a8491;
}

.language-nav a[aria-current="page"] {
  color: var(--ink);
}

.hero {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #f7f9fc;
}

.hero-grid {
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  align-items: center;
  gap: 64px;
  padding: 72px 0 54px;
}

.eyebrow,
.section-kicker,
.product-audience {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 820;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 670px;
  margin: 0;
  font-size: 62px;
  line-height: 1.1;
  letter-spacing: 0;
  text-wrap: balance;
}

html[lang="en"] .hero h1,
html[lang="ja"] .hero h1 {
  font-size: 56px;
}

.hero-copy {
  max-width: 650px;
  margin: 24px 0 0;
  color: #4c5868;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-weight: 760;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.button-primary {
  color: #fff;
  background: var(--ink);
}

.button-primary:hover,
.button-primary:focus-visible {
  border-color: var(--blue-dark);
  background: var(--blue-dark);
}

.hero-media {
  min-height: 0;
}

.hero-media > img:first-child {
  width: 100%;
  height: 450px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.system-path {
  --stair-rise: 56px;
  --stair-top: 58px;
  --stair-face: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 0;
  min-height: 390px;
  padding: 58px 0 34px;
  counter-reset: system-step;
  isolation: isolate;
}

.system-step {
  position: relative;
  z-index: 1;
  min-height: 228px;
  padding: 0 34px calc(var(--stair-top) + var(--stair-face) + 18px);
  counter-increment: system-step;
}

.system-step:nth-child(2) {
  z-index: 2;
  margin-bottom: var(--stair-rise);
}

.system-step:nth-child(3) {
  z-index: 3;
  margin-bottom: calc(var(--stair-rise) * 2);
}

.system-step::before {
  position: absolute;
  right: -22px;
  bottom: var(--stair-face);
  left: 0;
  height: var(--stair-top);
  border: 1px solid #b9c6d6;
  background: #fff;
  box-shadow: 0 14px 28px rgba(26, 43, 65, 0.08);
  clip-path: polygon(0 32%, calc(100% - 22px) 32%, 100% 0, 100% 68%, calc(100% - 22px) 100%, 0 100%);
  content: "";
}

.system-step::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: var(--stair-face);
  border: 1px solid #b9c6d6;
  border-top: 0;
  background: #dfe7f1;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  content: "";
}

.system-step b {
  display: block;
  margin-bottom: 9px;
  color: var(--ink);
  font-size: 18px;
}

.system-step b::before {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  content: "STEP 0" counter(system-step);
}

.system-step p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 96px 0;
}

.section-soft {
  background: var(--surface-soft);
}

.section-mint {
  background: var(--surface-mint);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  align-items: end;
  gap: 54px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.18;
  letter-spacing: 0;
  text-wrap: balance;
}

.section-desc {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.product-stack {
  border-top: 1px solid var(--line);
}

.product-row {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, 0.92fr);
  align-items: center;
  gap: 70px;
  padding: 66px 0;
  border-bottom: 1px solid var(--line);
}

.product-row:nth-child(even) {
  grid-template-columns: minmax(330px, 0.92fr) minmax(0, 1.08fr);
}

.product-row:nth-child(even) .product-copy {
  order: 1;
}

.product-row:nth-child(even) .product-media {
  order: 2;
}

.product-copy {
  order: 2;
}

.product-media {
  order: 1;
  min-height: 465px;
}

.product-visual-label {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
  color: #657181;
  font-size: 12px;
  font-weight: 730;
}

.product-visual-label span:last-child {
  color: var(--blue);
}

.product-carousel {
  width: 100%;
}

.carousel-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  box-shadow: var(--shadow);
}

.carousel-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
}

.carousel-slide.is-active {
  opacity: 1;
  visibility: visible;
}

.carousel-scene {
  object-fit: cover;
}

.carousel-screenshot {
  padding: 12px;
  background: #fff;
  object-fit: contain;
}

.carousel-controls {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 12px;
}

.carousel-button {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: #334050;
  background: #fff;
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

.carousel-button:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: #f4f8ff;
}

.carousel-button:focus-visible,
.carousel-dot:focus-visible {
  outline: 3px solid rgba(20, 104, 212, 0.24);
  outline-offset: 3px;
}

.carousel-arrow {
  font-size: 22px;
  line-height: 1;
}

.carousel-dots {
  display: flex;
  align-items: center;
  gap: 9px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #c7ced7;
  cursor: pointer;
  transition: width 180ms ease, border-radius 180ms ease, background-color 180ms ease;
}

.carousel-dot.is-active {
  width: 24px;
  border-radius: 5px;
  background: var(--blue);
}

.product-copy h3 {
  margin: 0;
  font-size: 40px;
  line-height: 1.2;
}

.product-line {
  margin: 22px 0 0;
  color: #303945;
  font-size: 20px;
  font-weight: 680;
}

.product-desc {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.result-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 30px;
}

.result-chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: #4f5b6a;
  background: #fff;
  font-size: 13px;
  font-weight: 680;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: center;
  gap: 70px;
}

.split-grid.reverse .split-copy {
  order: 2;
}

.split-grid.reverse .split-media {
  order: 1;
}

.split-copy h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.18;
  letter-spacing: 0;
  text-wrap: balance;
}

.ai-heading {
  white-space: nowrap;
}

.split-copy > p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.split-copy h3 {
  margin: 26px 0 0;
  font-size: 27px;
  line-height: 1.35;
}

.split-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.capability-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
}

.ai-summary {
  --stair-rise: 38px;
  --stair-top: 44px;
  --stair-face: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 0;
  min-height: 320px;
  margin-top: 30px;
  counter-reset: ai-step;
  isolation: isolate;
}

.ai-summary article {
  position: relative;
  z-index: 1;
  min-height: 220px;
  padding: 0 18px calc(var(--stair-top) + var(--stair-face) + 14px);
  counter-increment: ai-step;
}

.ai-summary article:nth-child(2) {
  z-index: 2;
  margin-bottom: var(--stair-rise);
}

.ai-summary article:nth-child(3) {
  z-index: 3;
  margin-bottom: calc(var(--stair-rise) * 2);
}

.ai-summary article::before {
  position: absolute;
  right: -16px;
  bottom: var(--stair-face);
  left: 0;
  height: var(--stair-top);
  border: 1px solid #aebfd2;
  background: #fff;
  box-shadow: 0 12px 24px rgba(26, 43, 65, 0.08);
  clip-path: polygon(0 34%, calc(100% - 16px) 34%, 100% 0, 100% 66%, calc(100% - 16px) 100%, 0 100%);
  content: "";
}

.ai-summary article::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: var(--stair-face);
  border: 1px solid #aebfd2;
  border-top: 0;
  background: #d9e5f0;
  content: "";
}

.ai-summary h3 {
  margin: 0 0 5px;
  font-size: 17px;
}

.ai-summary h3::before {
  display: block;
  margin-bottom: 9px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  content: "STEP 0" counter(ai-step);
}

.ai-summary p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.support-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.76fr) minmax(0, 1.24fr);
  gap: 34px;
}

.support-statement {
  min-height: 460px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.support-statement h3 {
  margin: 0;
  font-size: 31px;
  line-height: 1.35;
}

.support-statement p {
  margin: 18px 0 0;
  color: var(--muted);
}

.support-note {
  color: var(--teal);
  font-size: 13px;
  font-weight: 780;
}

.support-log {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.support-log-head,
.support-log-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 24px;
  padding: 20px 26px;
  border-bottom: 1px solid var(--line);
}

.support-log-head {
  grid-template-columns: 1fr auto;
  color: #687484;
  font-size: 12px;
  font-weight: 740;
}

.support-log-row:last-child {
  border-bottom: 0;
}

.support-status {
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
}

.support-log-row h3 {
  margin: 0 0 4px;
  font-size: 18px;
}

.support-log-row p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.contact-section {
  padding: 90px 0;
  color: #fff;
  background: #171c23;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 64px;
  align-items: end;
}

.contact-copy h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.18;
}

.contact-copy > p {
  max-width: 780px;
  margin: 18px 0 0;
  color: #c4ced9;
  font-size: 17px;
}

.service-scope {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 34px;
  border-top: 1px solid #394451;
  border-left: 1px solid #394451;
}

.service-item {
  min-height: 130px;
  padding: 20px;
  border-right: 1px solid #394451;
  border-bottom: 1px solid #394451;
}

.service-item h3 {
  margin: 0 0 7px;
  font-size: 17px;
}

.service-item p {
  margin: 0;
  color: #b8c2cf;
  font-size: 14px;
}

.contact-panel {
  align-self: end;
  display: grid;
  gap: 10px;
  padding: 26px;
  border: 1px solid #3a4655;
  border-radius: 8px;
  background: #202731;
}

.contact-logo {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 0 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid #3a4655;
}

.contact-logo img {
  grid-row: 1 / 3;
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.contact-logo span {
  color: #9eabb9;
  font-size: 11px;
}

.contact-row {
  display: grid;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid #35404d;
}

.contact-row:last-child {
  border-bottom: 0;
}

.contact-row span {
  color: #93a0af;
  font-size: 11px;
  text-transform: uppercase;
}

.contact-row strong {
  overflow-wrap: anywhere;
  font-size: 14px;
}

:focus-visible {
  outline: 3px solid rgba(20, 104, 212, 0.35);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 8px 18px;
    padding: 10px 0;
  }

  .main-nav {
    order: 3;
    width: 100%;
    margin: 0;
    overflow-x: auto;
  }

  .language-nav {
    margin-left: auto;
  }

  .hero-grid,
  .split-grid,
  .split-grid.reverse,
  .support-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero h1,
  html[lang="en"] .hero h1,
  html[lang="ja"] .hero h1 {
    font-size: 52px;
  }

  .split-grid.reverse .split-copy,
  .split-grid.reverse .split-media {
    order: initial;
  }

  .product-row,
  .product-row:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .product-row .product-copy,
  .product-row:nth-child(even) .product-copy {
    order: 1;
  }

  .product-row .product-media,
  .product-row:nth-child(even) .product-media {
    order: 2;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .contact-panel {
    align-self: stretch;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 28px), var(--max));
  }

  .site-header {
    position: relative;
  }

  .brand-sub {
    display: none;
  }

  .main-nav {
    gap: 16px;
  }

  .nav-dropdown {
    display: none;
  }

  .language-nav {
    padding-left: 12px;
  }

  .hero-grid {
    min-height: 0;
    gap: 42px;
    padding: 46px 0;
  }

  .hero h1,
  html[lang="en"] .hero h1,
  html[lang="ja"] .hero h1 {
    font-size: 40px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-media {
    min-height: 0;
  }

  .hero-media > img:first-child {
    width: 100%;
    height: 300px;
  }

  .system-path,
  .ai-summary,
  .service-scope {
    grid-template-columns: 1fr;
  }

  .system-path,
  .ai-summary {
    min-height: 0;
    gap: 0;
  }

  .system-path {
    padding: 42px 0 30px;
  }

  .system-step {
    min-height: 190px;
    padding-right: 24px;
    padding-left: 24px;
    margin: 0 !important;
  }

  .system-step::before,
  .ai-summary article::before {
    right: 0;
  }

  .system-step:nth-child(2) {
    width: calc(100% - 12px);
    margin-left: 12px !important;
  }

  .system-step:nth-child(3) {
    width: calc(100% - 24px);
    margin-left: 24px !important;
  }

  .ai-summary {
    padding-top: 22px;
  }

  .ai-summary article {
    min-height: 176px;
    margin: 0 !important;
  }

  .ai-summary article:nth-child(2) {
    width: calc(100% - 10px);
    margin-left: 10px !important;
  }

  .ai-summary article:nth-child(3) {
    width: calc(100% - 20px);
    margin-left: 20px !important;
  }

  .section {
    padding: 68px 0;
  }

  .section-head h2,
  .split-copy h2,
  .contact-copy h2 {
    font-size: 34px;
  }

  .ai-heading {
    white-space: normal;
  }

  .product-row {
    min-height: 0;
    padding: 52px 0;
  }

  .product-copy h3 {
    font-size: 32px;
  }

  .product-line {
    font-size: 18px;
  }

  .product-media {
    min-height: 0;
  }

  .carousel-screenshot {
    padding: 6px;
  }

  .carousel-controls {
    gap: 12px;
  }

  .support-statement {
    min-height: 340px;
    padding: 28px;
  }

  .support-log-head,
  .support-log-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}