@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Noto+Sans+KR:wght@400;500;600;700;800;900&display=swap");

:root {
  --white: #fff;
  --paper: #f7f7f5;
  --ink: #050607;
  --muted: #6a6f70;
  --line: #e2e2df;
  --dark: #11171c;
  --green: #2f496b;
  --signal: #2f496b;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", "Noto Sans KR", sans-serif;
  letter-spacing: -0.025em;
  overflow-x: hidden;
}

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

button {
  font: inherit;
}

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

.mobile-break {
  display: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 260px 1fr 210px;
  align-items: center;
  height: 72px;
  padding: 0 32px;
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--ink);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: rgba(5, 6, 7, 0.1);
  box-shadow: 0 8px 22px rgba(17, 23, 28, 0.08);
  color: var(--ink);
  backdrop-filter: blur(12px);
}

.site-header.is-scrolled .gnb a,
.site-header.is-scrolled .header-util button {
  color: var(--ink);
}

.site-header.is-scrolled .gnb a::before {
  background: var(--ink);
}

.site-header.is-scrolled .gnb a:hover {
  color: var(--ink);
}

.site-header.is-scrolled .header-util a {
  background: var(--signal);
  color: var(--white);
  border-color: var(--signal);
}

.site-header.is-scrolled .header-util a:hover {
  background: var(--white);
  color: var(--signal);
  border-color: var(--signal);
}

.site-header.is-scrolled .menu-toggle {
  border-color: rgba(5, 6, 7, 0.18);
  background: rgba(255, 255, 255, 0.78);
}

.site-header.is-scrolled .menu-toggle span {
  background: var(--ink);
}

.logo {
  display: inline-flex;
  align-items: center;
  width: 188px;
  height: 52px;
  overflow: hidden;
}

.logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.gnb {
  display: flex;
  justify-content: center;
  gap: clamp(20px, 3.3vw, 52px);
}

.gnb a {
  position: relative;
  padding: 28px 0;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  transition: color 160ms ease, opacity 160ms ease;
}

.gnb a::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 20px;
  height: 1px;
  background: #fff;
  opacity: 0;
  transition: opacity 160ms ease;
}

.gnb a:hover {
  color: #fff;
  opacity: 1;
}

.gnb a:hover::before {
  opacity: 0.55;
}

.header-util {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 24px;
}

.header-util button {
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  cursor: pointer;
  transition: color 160ms ease;
}

.header-util button:hover {
  color: var(--green);
}

.language-switcher {
  position: relative;
}

.language-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.language-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  z-index: 80;
  display: grid;
  min-width: 82px;
  padding: 6px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(5, 6, 7, 0.12);
  box-shadow: 0 8px 22px rgba(17, 23, 28, 0.1);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.language-switcher.is-open .language-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.language-menu button {
  width: 100%;
  padding: 8px 10px;
  color: #172536;
  text-align: left;
  font-size: 12px;
  font-weight: 800;
}

.language-menu button:hover {
  background: #f1f5f8;
  color: var(--signal);
}

.header-util a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  min-width: 88px;
  background: var(--signal);
  color: var(--white);
  border-radius: 2px;
  font-size: 13px;
  font-weight: 800;
  border: 1px solid var(--signal);
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.header-util a:hover {
  background: #fff;
  color: var(--signal);
  border-color: #fff;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(17, 23, 28, 0.26);
  border-radius: 2px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: #fff;
  transition: transform 180ms ease, opacity 180ms ease;
}

.quick-contact-button {
  position: fixed;
  right: 34px;
  bottom: 34px;
  z-index: 60;
  display: grid;
  align-content: center;
  justify-items: center;
  width: 280px;
  height: 280px;
  padding: 58px 34px 50px;
  background: #29486c;
  border: 2px solid #29486c;
  border-radius: 50%;
  color: #fff;
  text-align: center;
  box-shadow: 0 18px 38px rgba(19, 38, 62, 0.24);
  transition:
    background-color 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.quick-contact-brand {
  display: inline-flex;
  position: relative;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 28px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.quick-contact-brand::after {
  content: "";
  position: absolute;
  width: 44px;
  height: 1px;
  margin-top: 48px;
  background: currentColor;
  opacity: 0.5;
}

.quick-contact-button strong {
  display: grid;
  gap: 9px;
  justify-items: center;
  margin-top: 20px;
  font-size: 40px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.06em;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.12);
}

.quick-contact-button strong span {
  display: block;
  white-space: nowrap;
}

.quick-contact-button:hover {
  background: #fff;
  color: #29486c;
  box-shadow: 0 20px 42px rgba(19, 38, 62, 0.28);
  transform: translateY(-3px);
}

.hero {
  display: block;
  height: auto;
  background: var(--white);
}

.hero-stage {
  position: relative;
  aspect-ratio: 16 / 7.2;
  overflow: hidden;
  background: #dfe7ea;
}

.hero-stage::before {
  content: "";
  position: absolute;
  left: 86px;
  right: 86px;
  bottom: 0;
  z-index: 3;
  height: 1px;
  background: var(--signal);
  transform-origin: left;
  animation: signal-line 1100ms ease-out both;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 1;
  transition: opacity 900ms ease-in-out;
}

.hero-stage::after {
  content: none;
}

.hero-stage.is-changing .hero-bg {
  opacity: 0;
}

.hero-stage.is-changing .hero-slide-message {
  opacity: 0;
  transform: translateY(10px);
}

.hero-copy {
  position: relative;
  z-index: 4;
  width: 48%;
  min-width: 500px;
  padding: 112px 0 0 86px;
}

.hero-slide-message {
  position: absolute;
  top: 28%;
  left: clamp(720px, 52vw, 980px);
  right: clamp(34px, 7vw, 134px);
  z-index: 4;
  width: auto;
  color: #fff;
  text-align: left;
  text-shadow: 0 2px 18px rgba(4, 13, 28, 0.36);
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

.hero-slide-message p {
  margin: 0;
  font-size: clamp(38px, 3.7vw, 66px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.06em;
  word-break: keep-all;
  text-shadow:
    0 2px 0 rgba(255, 255, 255, 0.16),
    0 8px 12px rgba(4, 13, 28, 0.34),
    0 18px 28px rgba(4, 13, 28, 0.28);
}

.hero-slide-message strong {
  display: block;
  max-width: 620px;
  margin-top: 22px;
  margin-left: 56px;
  color: rgba(255, 255, 255, 0.9);
  text-align: left;
  font-size: clamp(18px, 1.35vw, 25px);
  line-height: 1.5;
  font-weight: 800;
  letter-spacing: -0.04em;
  word-break: keep-all;
}

.hero-copy p {
  margin: 0 0 14px;
  color: var(--signal);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.hero-copy h1 {
  margin: 0 0 22px;
}

.hero-logo {
  width: clamp(588px, 47.5vw, 700px);
  aspect-ratio: 3 / 1.35;
  overflow: hidden;
}

.hero-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-copy h1:not(.hero-logo) {
  font-size: clamp(74px, 7.4vw, 118px);
  line-height: 0.9;
  font-weight: 900;
  letter-spacing: -0.045em;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.18);
}

.hero-copy strong {
  display: block;
  margin-bottom: 42px;
  color: #172536;
  font-size: 21px;
  line-height: 1.58;
  font-weight: 800;
}

.hero-copy a,
.value-cta a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 34px;
  padding-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
}

.hero-copy a::after,
.value-cta a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
}

.hero-copy .sales-cta {
  gap: 22px;
  min-width: 186px;
  height: 58px;
  padding: 0 24px 0 26px;
  background: var(--signal);
  color: #fff;
  border: 1px solid var(--signal);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.hero-copy .sales-cta::after {
  content: none;
}

.hero-copy .sales-cta span {
  margin-left: auto;
  font-size: 18px;
}

.hero-copy .sales-cta:hover {
  background: #fff;
  color: var(--signal);
  border-color: #fff;
}

@keyframes signal-line {
  from {
    transform: scaleX(0);
    opacity: 0;
  }

  to {
    transform: scaleX(1);
    opacity: 1;
  }
}


.value-section {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(420px, 2fr);
  align-items: stretch;
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  min-width: 0;
  border-right: 1px solid var(--line);
}

.value-card {
  min-width: 0;
  min-height: 192px;
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.value-card:not(:last-child) {
  border-right: 1px solid var(--line);
}

.reveal-card {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

.reveal-card.is-visible {
  opacity: 1;
  transform: none;
  will-change: auto;
}

.value-grid .reveal-card:nth-child(2) {
  --reveal-delay: 90ms;
}

.value-grid .reveal-card:nth-child(3) {
  --reveal-delay: 180ms;
}

.value-section .value-cta.reveal-card {
  --reveal-delay: 270ms;
}

.value-section .reveal-card {
  transform: translateY(24px);
}

.value-section .reveal-card.is-visible {
  transform: none;
}


.value-card svg {
  width: 42px;
  height: 42px;
  stroke: var(--ink);
  stroke-width: 2.4;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.value-card h2 {
  margin: 0 0 14px;
  color: var(--signal);
  font-size: 18px;
  line-height: 1;
  font-weight: 900;
}

.value-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.value-cta {
  position: relative;
  overflow: hidden;
  min-width: 0;
  min-height: 192px;
  background: var(--signal);
  color: var(--white);
}

.value-cta img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
}

.value-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.38);
}

.value-cta div {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 192px;
  flex-direction: column;
  justify-content: center;
  padding: 30px clamp(28px, 3.2vw, 48px);
  transform: none;
  backface-visibility: hidden;
}

.value-cta p {
  margin-bottom: 10px;
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
}

.value-cta h2 {
  margin-bottom: 18px;
  color: var(--white);
  font-size: 20px;
  line-height: 1.2;
}

.value-cta a {
  width: max-content;
  min-width: 170px;
  height: 50px;
  justify-content: space-between;
  gap: 24px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.66);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.value-cta a::after {
  content: none;
}

.value-cta a:hover {
  background: #fff;
  color: var(--signal);
  border-color: #fff;
}

.fleet {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 48px 86px 56px;
  background: var(--paper);
  overflow: hidden;
  isolation: isolate;
}

.fleet::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 132px;
  bottom: 0;
  z-index: 0;
  background-image:
    linear-gradient(90deg, rgba(247, 247, 245, 0.36) 0%, rgba(247, 247, 245, 0.78) 34%, rgba(247, 247, 245, 0.78) 66%, rgba(247, 247, 245, 0.36) 100%),
    var(--ops-bg, url("./bg.png"));
  background-size: cover;
  background-position: center;
  opacity: 0.46;
  filter: blur(22px) saturate(0.9);
  transform: scale(1.08);
  transition: background-image 420ms ease, opacity 420ms ease;
}

.fleet > * {
  position: relative;
  z-index: 1;
}

.ops-head {
  display: grid;
  gap: 6px;
  max-width: 860px;
}

.ops-head p {
  margin: 0;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--signal);
}

.ops-head h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.ops-head strong {
  color: #2a3133;
  font-size: 14px;
  line-height: 1.45;
  font-weight: 700;
}

.ops-body {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: 28px;
  align-items: stretch;
}

.ops-tabs {
  display: flex;
  flex-direction: column;
  align-self: stretch;
  background: rgba(255, 255, 255, 0.86);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.ops-tab {
  position: relative;
  display: grid;
  gap: 0;
  min-height: 76px;
  padding: 20px 22px 18px 28px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: #4a5154;
  text-align: left;
  cursor: pointer;
  transition: color 160ms ease, background-color 160ms ease;
}

.ops-tab:last-child {
  border-bottom: 0;
}

.ops-tab::after {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--signal);
  opacity: 0;
  transition: opacity 160ms ease;
}

.ops-tab-label {
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
}

.ops-tab-desc {
  display: block;
  max-height: 0;
  overflow: hidden;
  color: #667074;
  font-size: 13px;
  line-height: 1.55;
  opacity: 0;
  transition: max-height 220ms ease, opacity 180ms ease, margin-top 180ms ease;
}

.ops-tab:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
}

.ops-tab.is-active {
  color: var(--signal);
  background: #fff;
}

.ops-tab.is-active::after {
  opacity: 1;
}

.ops-tab.is-active .ops-tab-desc {
  max-height: 96px;
  margin-top: 12px;
  opacity: 1;
}

.ops-quote-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  min-height: 96px;
  padding: 24px 26px;
  background: var(--signal);
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  font-size: 15px;
  font-weight: 900;
  line-height: 1.35;
  transition: background-color 180ms ease, color 180ms ease;
}

.ops-quote-button span:last-child {
  font-size: 20px;
  line-height: 1;
}

.ops-quote-button:hover {
  background: #3f5f86;
  color: #fff;
}

.ops-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 420px;
  max-height: 640px;
  overflow: hidden;
  background: #11181d;
}

.ops-slider img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 1;
  transform: scale(1);
  filter: saturate(0.96) contrast(1);
  transition: opacity 980ms cubic-bezier(0.22, 1, 0.36, 1), transform 1400ms cubic-bezier(0.22, 1, 0.36, 1), filter 980ms ease;
}

.ops-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 30px;
  background:
    linear-gradient(135deg, rgba(9, 13, 17, 0.58) 0%, rgba(9, 13, 17, 0.22) 38%, rgba(9, 13, 17, 0.08) 72%),
    linear-gradient(180deg, rgba(9, 13, 17, 0.04) 30%, rgba(9, 13, 17, 0.46) 100%);
}

.ops-meta {
  max-width: 690px;
  color: #fff;
}

.ops-meta p {
  margin: 0 0 14px;
  color: #cfdae6;
  font-size: 14px;
  font-weight: 700;
}

.ops-meta h3 {
  margin: 0 0 12px;
  font-size: clamp(22px, 2.3vw, 29px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.ops-meta span {
  color: #d8e0e8;
  font-size: 16px;
  line-height: 1.4;
}

.ops-meta-panel {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 900ms cubic-bezier(0.22, 1, 0.36, 1), transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
}

.ops-controls {
  position: absolute;
  right: 20px;
  bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}

.ops-controls button {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
}

.ops-controls span {
  min-width: 56px;
  text-align: center;
  font-size: 12px;
  font-weight: 800;
}

.ops-slider.is-changing .ops-image,
.ops-slider.is-changing .ops-meta-panel {
  opacity: 0;
}

.ops-slider.is-changing .ops-image {
  transform: scale(1.018);
  filter: saturate(0.9) contrast(0.96);
}

.ops-slider.is-changing .ops-meta-panel {
  transform: translateY(10px);
}

.tech-section {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 34px;
  padding: 82px 86px 88px;
  background:
    linear-gradient(180deg, #fbfbfa 0%, #eef4f7 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.tech-section::before {
  content: "";
  position: absolute;
  inset: -90px -120px;
  background:
    radial-gradient(circle at 18% 24%, rgba(47, 73, 107, 0.17) 0 3px, transparent 4px),
    radial-gradient(circle at 76% 58%, rgba(47, 73, 107, 0.14) 0 3px, transparent 4px),
    linear-gradient(115deg, transparent 0 18%, rgba(47, 73, 107, 0.24) 18% 18.7%, transparent 18.7% 100%),
    linear-gradient(115deg, transparent 0 42%, rgba(47, 73, 107, 0.18) 42% 42.6%, transparent 42.6% 100%),
    linear-gradient(115deg, transparent 0 68%, rgba(47, 73, 107, 0.16) 68% 68.5%, transparent 68.5% 100%),
    linear-gradient(rgba(47, 73, 107, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 73, 107, 0.075) 1px, transparent 1px);
  background-size: 520px 360px, 640px 420px, 920px 520px, 720px 420px, 680px 440px, 56px 56px, 56px 56px;
  filter: blur(5px);
  opacity: 0.78;
  transform: translate3d(0, 0, 0);
  animation: tech-bg-drift 22s linear infinite;
  pointer-events: none;
}

.tech-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(251, 251, 250, 0.84) 0%, rgba(251, 251, 250, 0.48) 38%, rgba(238, 244, 247, 0.66) 100%);
  pointer-events: none;
}

.tech-copy,
.tech-platform {
  position: relative;
  z-index: 1;
}

.tech-copy {
  display: grid;
  grid-template-columns: minmax(680px, 1fr) minmax(360px, 0.6fr);
  gap: 72px;
  align-items: end;
  width: min(100%, 1180px);
  margin: 0 auto;
}

.tech-copy p {
  margin: 0;
  color: var(--signal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.tech-copy h2 {
  margin: 12px 0 0;
  color: #0b1117;
  font-size: 37px;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: 0;
}

.tech-title-line {
  display: block;
  white-space: nowrap;
}

.tech-copy strong {
  display: block;
  max-width: 460px;
  color: #343a3f;
  font-size: 15px;
  line-height: 1.75;
  font-weight: 600;
}

.tech-copy strong span {
  display: block;
}

.tech-copy strong span + span {
  margin-top: 6px;
}

.tech-platform {
  position: relative;
  overflow: hidden;
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 26px 30px 30px;
  background: #f8fbfd;
  color: #102033;
  border: 1px solid #d8e2ea;
}

.tech-platform::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(47, 73, 107, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 73, 107, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.8;
  pointer-events: none;
}

.platform-head,
.platform-flow {
  position: relative;
  z-index: 1;
}

.platform-head {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid #dce5ec;
}

.platform-head span {
  color: #2f496b;
  font-size: 12px;
  font-weight: 900;
}

.platform-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  min-height: 246px;
}

.platform-line {
  content: "";
  position: absolute;
  left: 9%;
  right: 9%;
  top: 86px;
  height: 1px;
  background: #b8c8d4;
}

.platform-step {
  appearance: none;
  position: relative;
  display: grid;
  align-content: start;
  gap: 13px;
  min-height: 214px;
  padding: 36px 28px 28px;
  text-align: left;
  background: transparent;
  border: 0;
  border-right: 1px solid #dce5ec;
  cursor: pointer;
  font: inherit;
  transition: background-color 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.platform-step > span:first-child::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 32px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: #2f496b;
  background: #fff;
  border: 1px solid #b8c8d4;
  font-size: 18px;
  line-height: 1;
  font-weight: 700;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

/* Simplified Hydrogen Section */
.hydrogen-section {
  position: relative;
  padding: 64px 24px;
  background: linear-gradient(180deg, #eef8fb, #ffffff);
  color: #0b2a3a;
  border-top: 1px solid #e6eef3;
}
.hydrogen-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}
.hydrogen-section .reveal-card { opacity: 1; transform: none; }
.hydrogen-copy p {
  margin: 0;
  color: #1f8a6f;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.hydrogen-copy h2 {
  margin: 12px 0 16px;
  font-size: 34px;
  line-height: 1.05;
  font-weight: 900;
  color: #0b1117;
}
.hydrogen-copy strong {
  display: block;
  color: #3b4b4f;
  font-weight: 600;
  margin-top: 8px;
}
.hydrogen-card-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin: 32px 0;
}
.hydrogen-use-card {
  background: #fff;
  border: 1px solid #e6eef3;
  padding: 26px;
  width: 320px;
  box-shadow: 0 6px 18px rgba(11,26,34,0.04);
  text-align: left;
}
.hydrogen-use-card p { color: #1f8a6f; font-weight: 800; margin-bottom: 8px; }
.hydrogen-use-card h3 { margin: 0 0 10px; font-size: 18px; font-weight: 900; color: #0b1117; }
.hydrogen-use-card strong { color: #657078; font-weight: 600; font-size: 14px; display: block; margin-bottom: 8px; }
.hydrogen-facts { display: flex; gap: 40px; justify-content: center; margin: 24px 0 12px; }
.hydrogen-facts div { text-align: center; color: #0b2a3a; }
.hydrogen-facts strong { display: block; font-size: 20px; color: #1f8a6f; font-weight: 900; }
.hydrogen-quote {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding: 14px 26px;
  background: #143f80;
  color: #fff;
  border-radius: 4px;
  font-weight: 800;
}

@media (max-width: 880px) {
  .hydrogen-card-grid { flex-direction: column; align-items: center; }
  .hydrogen-use-card { width: 100%; max-width: 420px; }
  .hydrogen-inner { padding: 0 16px; }
  .hydrogen-copy h2 { font-size: 28px; }
}

.platform-step:last-child {
  border-right: 0;
}

.platform-step::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 79px;
  width: 15px;
  height: 15px;
  background: #fff;
  border: 3px solid #f8fbfd;
  box-shadow: 0 0 0 1px #8ca9bd;
}

.platform-step::after {
  content: "";
  position: absolute;
  left: 48px;
  top: 86px;
  width: calc(100% - 58px);
  height: 1px;
  background: #b8c8d4;
}

.platform-step-final {
  background: #e9f1f7;
}

.platform-step-final::after {
  display: none;
}

.platform-step span {
  color: #55708b;
  font-size: 12px;
  font-weight: 900;
}

.platform-step h3 {
  margin: 42px 0 0;
  color: #102033;
  font-size: 19px;
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: 0;
}

.platform-step p {
  margin: 0;
  color: #4f6274;
  font-size: 14px;
  line-height: 1.62;
  font-weight: 600;
}

.platform-step em {
  align-self: end;
  margin-top: 16px;
  color: #2f496b;
  font-size: 13px;
  font-style: normal;
  font-weight: 900;
}

.platform-step em::after {
  content: " ->";
}

.platform-step:hover,
.platform-step:focus-visible {
  background: #fff;
  border-color: #b8c8d4;
  box-shadow: inset 0 -4px 0 #2f496b, 0 10px 22px rgba(47, 73, 107, 0.1);
  outline: none;
}

.platform-step:hover::before,
.platform-step:focus-visible::before {
  background: #2f496b;
  box-shadow: 0 0 0 1px #2f496b, 0 0 0 7px rgba(47, 73, 107, 0.12);
}

.platform-step:hover > span:first-child::after,
.platform-step:focus-visible > span:first-child::after {
  color: #fff;
  background: #2f496b;
  border-color: #2f496b;
}

.platform-step-final:hover,
.platform-step-final:focus-visible {
  background: #fff;
}

.tech-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.tech-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.tech-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 13, 18, 0.62);
}

.tech-modal-dialog {
  position: relative;
  z-index: 1;
  display: inline-grid;
  width: auto;
  max-width: 92vw;
  max-height: 86vh;
  background: #fff;
  border: 1px solid #d8e2ea;
}

.tech-modal-close {
  position: absolute;
  right: 14px;
  top: 12px;
  z-index: 2;
  width: 34px;
  height: 34px;
  color: #102033;
  background: #fff;
  border: 1px solid #d8e2ea;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.tech-modal-img {
  display: block;
  width: auto;
  max-width: 92vw;
  max-height: 86vh;
  object-fit: contain;
  background: #f6f8fa;
}

.clients-section {
  overflow: hidden;
  padding: 72px 0 76px;
  background: #f7f8f8;
  border-bottom: 1px solid var(--line);
}

.clients-head {
  width: min(100% - 140px, 980px);
  margin: 0 auto 38px;
  text-align: center;
}

.clients-head p {
  margin: 0 0 10px;
  color: var(--signal);
  font-size: 12px;
  font-weight: 900;
}

.clients-head h2 {
  margin: 0;
  color: #0b1117;
  font-size: 34px;
  line-height: 1.2;
  font-weight: 900;
}

.clients-head strong {
  display: block;
  margin-top: 12px;
  color: #4c5358;
  font-size: 15px;
  line-height: 1.7;
  font-weight: 600;
}

.client-marquee {
  display: grid;
  gap: 12px;
}

.client-row {
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.client-row::before,
.client-row::after {
  content: "";
  position: absolute;
  z-index: 2;
  top: 0;
  width: 90px;
  height: 100%;
  pointer-events: none;
}

.client-row::before {
  left: 0;
  background: linear-gradient(90deg, #f7f8f8 0%, rgba(247, 248, 248, 0) 100%);
}

.client-row::after {
  right: 0;
  background: linear-gradient(270deg, #f7f8f8 0%, rgba(247, 248, 248, 0) 100%);
}

.client-track {
  display: inline-flex;
  gap: 12px;
  min-width: max-content;
  will-change: transform;
}

.client-row-left .client-track {
  animation: client-marquee-left 42s linear infinite;
}

.client-row-right .client-track {
  animation: client-marquee-right 46s linear infinite;
}

.client-row-slow .client-track {
  animation-duration: 50s;
}

.client-track span {
  display: inline-grid;
  place-items: center;
  min-width: 168px;
  height: 54px;
  padding: 0 22px;
  color: #25384d;
  background: #fff;
  border: 1px solid #dfe4e8;
  font-size: 15px;
  font-weight: 800;
}

.client-track span.has-logo {
  min-width: 206px;
  padding: 0 26px;
}

.client-track span.has-logo img {
  display: block;
  max-width: 160px;
  max-height: 35px;
  object-fit: contain;
  opacity: 1;
}

.client-track span.has-logo b {
  display: none;
}

@keyframes client-marquee-left {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@keyframes client-marquee-right {
  from {
    transform: translateX(-50%);
  }

  to {
    transform: translateX(0);
  }
}

.esg-section {
  position: relative;
  padding: 82px 86px 92px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.esg-head {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}

.esg-head p {
  margin: 0 0 10px;
  color: var(--signal);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.esg-head h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 4.6vw, 58px);
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.esg-head strong {
  display: block;
  margin-top: 14px;
  color: #202425;
  font-size: 18px;
  line-height: 1.55;
  font-weight: 800;
}

.esg-track {
  position: absolute;
  left: calc(50% - 370px);
  right: calc(50% - 370px);
  top: 222px;
  height: 1px;
  background: #cfcfca;
}

.esg-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 72px;
  max-width: 1030px;
  margin: 0 auto;
}

.esg-card {
  display: grid;
  gap: 16px;
}

.esg-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 62px;
  background: var(--signal);
  color: #fff;
  border: 1px solid var(--signal);
  border-radius: 0;
  font-size: 38px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.esg-card:nth-child(2) .esg-letter {
  background: #3f5f84;
  border-color: #3f5f84;
}

.esg-card:nth-child(3) .esg-letter {
  background: #526c8f;
  border-color: #526c8f;
}

.esg-body {
  min-height: 154px;
  padding: 22px 24px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 2px solid var(--signal);
}

.esg-body h3 {
  margin: 0 0 12px;
  color: #171a1b;
  font-size: 17px;
  line-height: 1.35;
  font-weight: 900;
  text-align: center;
}

.esg-body p {
  margin: 0;
  color: #343839;
  font-size: 15px;
  line-height: 1.72;
}

.esg-grid .reveal-card:nth-child(2) {
  --reveal-delay: 100ms;
}

.esg-grid .reveal-card:nth-child(3) {
  --reveal-delay: 200ms;
}

.hydrogen-section {
  --hydrogen-bg: rgba(123, 165, 237, 0.7);
  --hydrogen-accent: #143f80;
  --hydrogen-accent-soft: rgba(255, 255, 255, 0.18);
  position: relative;
  overflow: hidden;
  min-height: min(760px, calc(100vh - 70px));
  padding: 92px 86px 96px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04)),
    var(--hydrogen-bg);
  color: #10242d;
  border-top: 1px solid #dfe9e3;
  transition: background 680ms cubic-bezier(0.22, 1, 0.36, 1), color 680ms ease;
}

.hydrogen-section.theme-corporate {
  --hydrogen-bg: rgba(123, 165, 237, 0.7);
  --hydrogen-accent: #183f78;
  --hydrogen-accent-soft: rgba(255, 255, 255, 0.2);
}

.hydrogen-section.theme-education {
  --hydrogen-bg: rgba(91, 212, 72, 0.7);
  --hydrogen-accent: #145f25;
  --hydrogen-accent-soft: rgba(255, 255, 255, 0.22);
}

.hydrogen-section.theme-public {
  --hydrogen-bg: rgba(43, 163, 200, 0.7);
  --hydrogen-accent: #104d64;
  --hydrogen-accent-soft: rgba(255, 255, 255, 0.2);
}

.hydrogen-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.24), transparent 26%),
    radial-gradient(circle at 78% 18%, rgba(255, 255, 255, 0.18), transparent 24%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: auto, auto, 76px 76px, 76px 76px;
  opacity: 0.62;
  pointer-events: none;
}

.hydrogen-section::after {
  content: "";
  position: absolute;
  inset: 72px 7vw auto;
  height: 70%;
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0.08) 58%, rgba(255, 255, 255, 0.24));
  border: 1px solid rgba(255, 255, 255, 0.26);
  opacity: 0.52;
  pointer-events: none;
}

.hydrogen-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  width: min(100%, 1180px);
  margin: 0 auto;
  align-items: start;
  justify-items: center;
}

.hydrogen-copy {
  display: grid;
  justify-items: center;
  text-align: center;
  width: min(100%, 900px);
}

.hydrogen-copy p {
  margin: 0 0 14px;
  color: rgba(18, 45, 58, 0.78);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.hydrogen-copy h2 {
  margin: 0;
  color: #10242d;
  font-size: clamp(33px, 3.78vw, 53px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.055em;
  word-break: keep-all;
}

.hydrogen-copy h2 span {
  display: inline-block;
  color: #10242d;
  white-space: nowrap;
}

.hydrogen-copy h2 .hydrogen-title-dark {
  color: #10242d;
}

.hydrogen-copy strong {
  display: block;
  max-width: 760px;
  margin-top: 22px;
  color: rgba(16, 36, 45, 0.82);
  font-size: 16px;
  line-height: 1.78;
  font-weight: 700;
  word-break: keep-all;
}

.hydrogen-copy strong span {
  display: block;
}

.hydrogen-visual {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 880px);
  min-height: 300px;
  overflow: hidden;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.hydrogen-visual::before,
.hydrogen-visual::after,
.hydrogen-leaf,
.hydrogen-turbine,
.hydrogen-charger,
.hydrogen-bus {
  display: none;
}

/* legacy decorative hydrogen illustration intentionally hidden */
/*
.hydrogen-visual::before {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: 56px;
  height: 70px;
  background: rgba(255, 255, 255, 0.62);
  transform: skewY(-4deg);
}

.hydrogen-visual::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 86px;
  background: linear-gradient(90deg, rgba(63, 139, 85, 0.16), rgba(255, 255, 255, 0.44), rgba(63, 139, 85, 0.12));
}

.hydrogen-leaf {
  position: absolute;
  z-index: 3;
  display: block;
  width: 58px;
  height: 32px;
  background: var(--hydrogen-accent);
  border-radius: 100% 0 100% 0;
  opacity: 0.72;
  transform: rotate(-28deg);
}

.hydrogen-leaf-one {
  right: 26px;
  top: 26px;
}

.hydrogen-leaf-two {
  right: 78px;
  top: 12px;
  width: 38px;
  height: 22px;
  opacity: 0.58;
}

.hydrogen-turbine {
  position: absolute;
  z-index: 1;
  width: 2px;
  height: 118px;
  background: rgba(116, 142, 147, 0.52);
}

.hydrogen-turbine::before {
  content: "";
  position: absolute;
  left: -8px;
  top: -8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(116, 142, 147, 0.38);
}

.hydrogen-turbine::after {
  content: "";
  position: absolute;
  left: -46px;
  top: -2px;
  width: 92px;
  height: 2px;
  background: rgba(116, 142, 147, 0.36);
  box-shadow: 45px -39px 0 rgba(116, 142, 147, 0.28), -24px 36px 0 rgba(116, 142, 147, 0.22);
  transform: rotate(-18deg);
}

.hydrogen-turbine-one {
  right: 166px;
  top: 58px;
}

.hydrogen-turbine-two {
  right: 86px;
  top: 90px;
  height: 92px;
  opacity: 0.7;
}

.hydrogen-charger {
  position: absolute;
  right: 28px;
  bottom: 54px;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 82px;
  height: 154px;
  color: var(--hydrogen-accent);
  background: #fff;
  border: 1px solid #cfe3d5;
  box-shadow: 0 14px 28px rgba(37, 89, 58, 0.1);
}

.hydrogen-charger strong {
  font-size: 30px;
  line-height: 1;
  font-weight: 900;
}

.hydrogen-charger span {
  margin-top: -22px;
  color: #6f8a79;
  font-size: 10px;
  font-weight: 700;
}

.hydrogen-bus {
  position: absolute;
  left: 54px;
  right: 126px;
  bottom: 64px;
  z-index: 4;
  height: 132px;
  background: #f9fbfa;
  border: 2px solid #20282a;
  border-radius: 32px 52px 16px 16px;
  box-shadow: 0 22px 35px rgba(22, 54, 33, 0.14);
}

.hydrogen-bus::before {
  content: "";
  position: absolute;
  left: 24px;
  right: 28px;
  top: 24px;
  height: 42px;
  background: #17262a;
  border-radius: 18px 36px 6px 6px;
}

.hydrogen-bus::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 24px;
  height: 30px;
  background: linear-gradient(90deg, #e9f2e9 0 62%, var(--hydrogen-accent) 62% 100%);
}

.hydrogen-bus-sign {
  position: absolute;
  z-index: 2;
  left: 54px;
  top: 36px;
  color: #81d45f;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.03em;
}

.hydrogen-bus-window {
  position: absolute;
  z-index: 2;
  right: 24px;
  top: 24px;
  width: 74px;
  height: 42px;
  background: #1c2c30;
  border-radius: 8px 30px 4px 4px;
}

.hydrogen-bus-line {
  position: absolute;
  z-index: 3;
  right: 34px;
  bottom: 39px;
  color: var(--hydrogen-accent);
  font-size: 18px;
  font-weight: 900;
}

.hydrogen-bus-line::before {
  content: "H₂";
}

.hydrogen-bus-wheel {
  position: absolute;
  z-index: 5;
  bottom: -16px;
  width: 34px;
  height: 34px;
  background: #20282a;
  border: 8px solid #91a49a;
  border-radius: 50%;
}

.hydrogen-bus-wheel-front {
  right: 52px;
}

.hydrogen-bus-wheel-back {
  left: 58px;
}
*/

.hydrogen-slide-copy {
  position: relative;
  z-index: 7;
  width: min(820px, 100%);
  margin: 0 auto;
  padding: 0 0 0 34px;
  text-align: left;
  background: transparent;
  border: 0;
  border-left: 4px solid var(--hydrogen-accent);
  box-shadow: none;
  backdrop-filter: blur(12px);
  transition: opacity 520ms cubic-bezier(0.22, 1, 0.36, 1), transform 520ms cubic-bezier(0.22, 1, 0.36, 1), border-color 680ms ease;
}

.hydrogen-section.theme-corporate .hydrogen-slide-copy {
  width: min(820px, 100%);
  padding: 0 0 0 34px;
  text-align: left;
  border-left: 4px solid var(--hydrogen-accent);
}

.hydrogen-section.theme-education .hydrogen-slide-copy {
  width: min(760px, 100%);
  padding: 34px 44px 36px;
  text-align: center;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 26px;
  box-shadow: 0 24px 60px rgba(20, 95, 37, 0.14);
}

.hydrogen-section.theme-public .hydrogen-slide-copy {
  width: min(780px, 100%);
  padding: 30px 42px 32px;
  text-align: left;
  background: rgba(255, 255, 255, 0.16);
  border-left: 0;
  border-top: 2px solid var(--hydrogen-accent);
  border-bottom: 1px solid rgba(16, 77, 100, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.hydrogen-visual.is-changing .hydrogen-slide-copy {
  opacity: 0;
  transform: translateY(8px);
}

.hydrogen-slide-number {
  display: block;
  margin-bottom: 16px;
  color: rgba(16, 36, 45, 0.72);
  font-size: 15px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.hydrogen-section.theme-education .hydrogen-slide-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 16px;
  color: #145f25;
  background: rgba(255, 255, 255, 0.36);
  border: 1px solid rgba(20, 95, 37, 0.18);
  border-radius: 999px;
}

.hydrogen-section.theme-public .hydrogen-slide-number {
  padding-bottom: 12px;
  color: #104d64;
  border-bottom: 1px solid rgba(16, 77, 100, 0.24);
  letter-spacing: 0.03em;
}

.hydrogen-slide-title {
  margin: 0 0 12px;
  color: #10242d;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.26;
  font-weight: 900;
  letter-spacing: -0.045em;
}

.hydrogen-section.theme-education .hydrogen-slide-title,
.hydrogen-section.theme-education .hydrogen-slide-desc {
  margin-left: auto;
  margin-right: auto;
}

.hydrogen-section.theme-public .hydrogen-slide-title {
  max-width: 660px;
}

.hydrogen-slide-desc {
  margin: 0;
  max-width: 720px;
  color: rgba(16, 36, 45, 0.78);
  font-size: 16px;
  line-height: 1.8;
  font-weight: 700;
  word-break: keep-all;
}

.hydrogen-progress {
  position: relative;
  left: auto;
  bottom: auto;
  z-index: 8;
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 34px;
  transform: none;
}

.hydrogen-progress span {
  width: 44px;
  height: 2px;
  background: rgba(16, 36, 45, 0.22);
  transition: background-color 360ms ease, width 360ms ease;
}

.hydrogen-progress span.is-active {
  width: 68px;
  background: var(--hydrogen-accent);
}

.detail-page {
  background: #fbfbfa;
}

.hydrogen-detail-page .site-header {
  position: sticky;
}

.hydrogen-detail-hero {
  display: grid;
  grid-template-columns: minmax(520px, 0.9fr) minmax(420px, 0.7fr);
  gap: 72px;
  align-items: end;
  min-height: 620px;
  padding: 168px 86px 88px;
  background: #f6f8f9;
  border-bottom: 1px solid var(--line);
}

.hydrogen-detail-hero-copy,
.hydrogen-detail-visual,
.hydrogen-detail-section,
.hydrogen-process-section,
.hydrogen-re100-section,
.hydrogen-closing-section {
  width: min(100%, 1180px);
}

.hydrogen-detail-hero-copy {
  justify-self: end;
}

.hydrogen-detail-hero-copy p,
.hydrogen-detail-heading p,
.hydrogen-re100-card p,
.hydrogen-closing-section p {
  margin: 0 0 14px;
  color: var(--signal);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.hydrogen-detail-hero-copy h1 {
  margin: 0;
  color: #0b1117;
  font-size: clamp(48px, 5vw, 74px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.065em;
}

.hydrogen-detail-hero-copy strong {
  display: block;
  max-width: 640px;
  margin-top: 28px;
  color: #343a3f;
  font-size: 18px;
  line-height: 1.78;
  font-weight: 700;
}

.hydrogen-detail-visual {
  position: relative;
  justify-self: start;
  display: grid;
  align-content: end;
  min-height: 360px;
  padding: 38px;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    #102033;
  background-size: 54px 54px;
  border: 1px solid #102033;
}

.hydrogen-detail-visual::before {
  content: "";
  position: absolute;
  inset: auto 36px 36px auto;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.hydrogen-detail-visual span {
  position: relative;
  z-index: 1;
  font-size: clamp(92px, 10vw, 150px);
  line-height: 0.86;
  font-weight: 900;
  letter-spacing: -0.08em;
}

.hydrogen-detail-visual em {
  position: relative;
  z-index: 1;
  margin-top: 28px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 15px;
  font-style: normal;
  font-weight: 800;
}

.hydrogen-detail-section,
.hydrogen-process-section,
.hydrogen-re100-section,
.hydrogen-closing-section {
  margin: 0 auto;
  padding: 84px 0;
}

.hydrogen-detail-heading {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(520px, 1fr);
  gap: 72px;
  align-items: start;
  margin-bottom: 42px;
}

.hydrogen-detail-heading h2 {
  margin: 0;
  color: #0b1117;
  font-size: clamp(30px, 3vw, 44px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.055em;
}

.hydrogen-text-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hydrogen-text-grid article {
  min-height: 300px;
  padding: 34px 30px;
  border-right: 1px solid var(--line);
}

.hydrogen-text-grid article:last-child {
  border-right: 0;
}

.hydrogen-text-grid h3,
.hydrogen-process h3 {
  margin: 0 0 16px;
  color: #102033;
  font-size: 21px;
  line-height: 1.32;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.hydrogen-text-grid p,
.hydrogen-process p {
  margin: 0;
  color: #4b5257;
  font-size: 15px;
  line-height: 1.76;
  font-weight: 600;
}

.hydrogen-process-section {
  border-top: 1px solid var(--line);
}

.hydrogen-process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid #dbe2e6;
}

.hydrogen-process article {
  min-height: 250px;
  padding: 30px 26px;
  background: #fff;
  border-right: 1px solid #dbe2e6;
}

.hydrogen-process article:last-child {
  border-right: 0;
  background: #eef4f7;
}

.hydrogen-process span {
  display: block;
  margin-bottom: 56px;
  color: var(--signal);
  font-size: 12px;
  font-weight: 900;
}

.hydrogen-re100-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hydrogen-re100-card {
  display: grid;
  grid-template-columns: minmax(420px, 0.9fr) minmax(460px, 1fr);
  gap: 72px;
  padding: 48px 52px;
  color: #fff;
  background: #102033;
}

.hydrogen-re100-card p {
  color: #a9c3d8;
}

.hydrogen-re100-card h2 {
  margin: 0;
  color: #fff;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.055em;
}

.hydrogen-re100-card strong {
  color: rgba(255, 255, 255, 0.76);
  font-size: 16px;
  line-height: 1.84;
  font-weight: 600;
}

.hydrogen-closing-section {
  display: grid;
  grid-template-columns: minmax(420px, 0.9fr) minmax(460px, 1fr);
  gap: 48px 72px;
  align-items: start;
}

.hydrogen-closing-section h2 {
  margin: 0;
  color: #0b1117;
  font-size: clamp(32px, 3.6vw, 52px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.hydrogen-closing-section strong {
  color: #343a3f;
  font-size: 17px;
  line-height: 1.82;
  font-weight: 700;
}

.hydrogen-closing-section a {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 260px;
  height: 56px;
  padding: 0 24px;
  color: #fff;
  background: var(--signal);
  border: 1px solid var(--signal);
  font-size: 14px;
  font-weight: 900;
  transition: background-color 160ms ease, color 160ms ease;
}

.hydrogen-closing-section a:hover {
  color: var(--signal);
  background: #fff;
}

@media (max-width: 1200px) {
  .site-header {
    grid-template-columns: 220px 1fr 180px;
  }

  .gnb {
    gap: 24px;
  }

  .hero-copy {
    padding-left: 54px;
  }

  .value-section {
    grid-template-columns: 1fr;
  }

  .value-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .value-card {
    min-height: 170px;
    padding: 28px 20px;
  }

  .value-cta div {
    min-height: 184px;
    padding: 30px 34px;
  }

  .fleet {
    padding: 40px 48px 48px;
  }

  .ops-body {
    grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
    gap: 22px;
  }

  .ops-slider {
    width: 100%;
    min-height: 360px;
    max-height: 560px;
  }

  .ops-slider img {
    height: 100%;
  }

  .ops-overlay {
    padding: 22px;
  }

  .ops-tab {
    padding: 18px 18px 16px 24px;
  }

  .tech-section {
    gap: 32px;
    padding: 58px 48px;
  }

  .tech-copy {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .tech-copy strong {
    max-width: 720px;
  }

  .esg-section {
    padding-left: 48px;
    padding-right: 48px;
  }

  .esg-grid {
    gap: 32px;
  }

  .esg-track {
    left: 18%;
    right: 18%;
  }

  .hydrogen-section {
    padding: 64px 48px 72px;
  }

  .hydrogen-inner {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hydrogen-copy strong {
    max-width: 760px;
  }

  .hydrogen-visual {
    min-height: 340px;
  }

  .hydrogen-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hydrogen-detail-hero {
    grid-template-columns: 1fr;
    gap: 42px;
    padding: 140px 48px 72px;
  }

  .hydrogen-detail-hero-copy,
  .hydrogen-detail-visual,
  .hydrogen-detail-section,
  .hydrogen-process-section,
  .hydrogen-re100-section,
  .hydrogen-closing-section {
    width: min(100%, calc(100vw - 96px));
  }

  .hydrogen-detail-hero-copy,
  .hydrogen-detail-visual {
    justify-self: center;
  }

  .hydrogen-detail-heading,
  .hydrogen-re100-card,
  .hydrogen-closing-section {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hydrogen-text-grid {
    grid-template-columns: 1fr;
  }

  .hydrogen-text-grid article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hydrogen-text-grid article:last-child {
    border-bottom: 0;
  }

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

  .hydrogen-process article:nth-child(2) {
    border-right: 0;
  }

  .hydrogen-process article:nth-child(-n + 2) {
    border-bottom: 1px solid #dbe2e6;
  }

  .hydrogen-closing-section a {
    grid-column: auto;
  }
}

@media (max-width: 820px) {
  html {
    scroll-padding-top: 64px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    height: 64px;
    padding: 0 20px;
  }

  .logo {
    width: 132px;
    height: 42px;
  }

  .gnb {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 8px 20px 14px;
    background: rgba(17, 23, 28, 0.92);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-header.is-scrolled .gnb {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: rgba(5, 6, 7, 0.1);
    box-shadow: 0 16px 26px rgba(17, 23, 28, 0.1);
  }

  .site-header.is-menu-open .gnb {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .gnb a {
    width: 100%;
    padding: 14px 4px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .site-header.is-scrolled .gnb a {
    color: var(--ink);
    border-bottom-color: rgba(5, 6, 7, 0.08);
  }

  .gnb a::before {
    display: none;
  }

  .header-util {
    gap: 12px;
  }

  .header-util > button {
    display: none;
  }

  .header-util a {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .hero {
    height: auto;
  }

  .hero-copy {
    min-width: 0;
    width: auto;
    padding: 56px 24px 24px;
  }

  .hero-slide-message {
    top: auto;
    left: 24px;
    right: 24px;
    bottom: 92px;
    width: auto;
  }

  .hero-slide-message p {
    font-size: 29px;
    line-height: 1.14;
  }

  .hero-slide-message strong {
    max-width: 360px;
    margin-top: 12px;
    margin-left: 20px;
    text-align: left;
    font-size: 15px;
    line-height: 1.52;
  }

  .hero-copy h1 {
    font-size: 58px;
  }

  .hero-logo {
    width: min(88vw, 538px);
  }

  .hero-stage {
    min-height: 460px;
  }

  .hero-bg {
    min-height: 460px;
    object-fit: cover;
    object-position: 58% center;
  }

  .hero-copy .sales-cta {
    min-width: 164px;
    height: 50px;
    padding: 0 20px 0 22px;
    font-size: 14px;
  }

  .value-section {
    grid-template-columns: 1fr;
  }

  .value-grid,
  .value-cta {
    grid-column: auto;
  }

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

  .value-card {
    min-height: auto;
    padding: 22px 16px;
    border-right: 0 !important;
    border-bottom: 1px solid var(--line);
    display: grid;
    justify-items: center;
    align-content: center;
    gap: 10px;
    text-align: center;
  }

  .value-grid {
    border-right: 0;
  }

  .value-card svg {
    width: 28px;
    height: 28px;
    margin: 0 auto;
  }

  .value-card h2 {
    margin: 0;
    margin-bottom: 8px;
    font-size: 16px;
  }

  .value-card p {
    margin: 0;
    max-width: 240px;
    font-size: 12px;
    line-height: 1.45;
  }

  .value-cta div {
    min-height: 160px;
    padding: 20px 18px;
  }

  .value-cta h2 {
    font-size: 16px;
    margin-bottom: 10px;
  }

  .value-cta a {
    min-width: 142px;
    height: 40px;
    font-size: 13px;
  }

  .fleet {
    padding: 32px 20px 40px;
  }

  .fleet > *,
  .ops-body,
  .ops-head,
  .ops-tabs,
  .ops-slider {
    min-width: 0;
  }

  .ops-head {
    max-width: 100%;
  }

  .mobile-break {
    display: block;
  }

  .ops-head strong {
    display: block;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .ops-body {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .ops-tabs {
    display: flex;
    flex-direction: column;
  }

  .ops-tab {
    min-height: 58px;
    padding: 16px 18px 14px 22px;
    border-bottom: 1px solid var(--line);
  }

  .ops-tab-label {
    font-size: 14px;
  }

  .ops-tab-desc {
    font-size: 12px;
    line-height: 1.5;
  }

  .ops-quote-button {
    justify-content: flex-start;
    gap: 28px;
    min-height: 72px;
    padding: 20px 22px;
    font-size: 14px;
  }

  .ops-quote-button span:first-child {
    min-width: 0;
  }

  .ops-slider {
    aspect-ratio: 4 / 3;
    min-height: 280px;
    max-height: 360px;
  }

  .ops-slider img {
    height: 100%;
  }

  .ops-overlay {
    display: grid;
    gap: 16px;
    align-content: start;
    padding: 16px;
  }

  .ops-meta h3 {
    font-size: 20px;
    word-break: keep-all;
  }

  .ops-meta p {
    font-size: 13px;
  }

  .ops-meta span {
    font-size: 14px;
    line-height: 1.5;
    word-break: keep-all;
  }

  .ops-controls {
    justify-self: start;
  }

  .tech-section {
    gap: 26px;
    padding: 48px 20px;
  }

  .tech-copy {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .tech-copy h2 {
    font-size: 24px;
    line-height: 1.2;
  }

  .tech-title-line {
    white-space: normal;
    word-break: keep-all;
  }

  .tech-copy strong {
    font-size: 14px;
    line-height: 1.72;
    word-break: keep-all;
  }

  .tech-platform {
    padding: 22px 18px 18px;
  }

  .platform-head {
    display: grid;
    gap: 8px;
    padding-bottom: 18px;
  }

  .platform-flow {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .platform-line {
    display: none;
  }

  .platform-step {
    min-height: 0;
    padding: 24px 18px 22px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  }

  .platform-step::after {
    display: none;
  }

  .platform-step::before {
    left: 18px;
    top: 28px;
  }

  .platform-step h3 {
    margin-top: 18px;
    font-size: 17px;
  }

  .tech-modal {
    padding: 18px;
  }

  .tech-modal-dialog {
    max-width: calc(100vw - 36px);
    max-height: 82vh;
  }

  .tech-modal-img {
    max-width: calc(100vw - 36px);
    max-height: 82vh;
  }

  .clients-section {
    padding: 46px 0 50px;
  }

  .clients-head {
    width: calc(100% - 40px);
    margin-bottom: 28px;
  }

  .clients-head h2 {
    font-size: 25px;
    line-height: 1.25;
  }

  .clients-head strong {
    font-size: 13px;
    line-height: 1.65;
  }

  .esg-section {
    padding: 48px 20px 52px;
  }

  .esg-head {
    max-width: 100%;
    margin-bottom: 28px;
    text-align: left;
  }

  .esg-head p {
    margin-bottom: 8px;
    font-size: 12px;
  }

  .esg-head h2 {
    font-size: 34px;
    line-height: 1.08;
    letter-spacing: -0.055em;
  }

  .esg-head strong {
    margin-top: 12px;
    font-size: 15px;
    line-height: 1.55;
    font-weight: 700;
    word-break: keep-all;
  }

  .esg-track {
    display: none;
  }

  .esg-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: none;
  }

  .esg-card {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }

  .esg-letter {
    height: auto;
    min-height: 128px;
    font-size: 34px;
  }

  .esg-body {
    min-height: 128px;
    padding: 18px 18px 18px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .esg-body h3 {
    margin-bottom: 8px;
    font-size: 16px;
    line-height: 1.32;
    text-align: left;
    word-break: keep-all;
  }

  .esg-body p {
    font-size: 14px;
    line-height: 1.58;
    word-break: keep-all;
  }

  .client-marquee {
    gap: 8px;
  }

  .client-row::before,
  .client-row::after {
    width: 42px;
  }

  .client-track {
    gap: 8px;
  }

  .client-track span {
    min-width: 136px;
    height: 46px;
    padding: 0 16px;
    font-size: 13px;
  }

  .client-track span.has-logo {
    min-width: 172px;
    padding: 0 18px;
  }

  .client-track span.has-logo img {
    max-width: 135px;
    max-height: 30px;
  }

  .hydrogen-section {
    padding: 48px 20px 54px;
  }

  .hydrogen-inner {
    gap: 28px;
  }

  .hydrogen-copy h2 {
    font-size: 27px;
    line-height: 1.2;
    word-break: keep-all;
  }

  .hydrogen-copy h2 span {
    white-space: normal;
  }

  .hydrogen-copy strong {
    margin-top: 18px;
    font-size: 14px;
    line-height: 1.7;
    word-break: keep-all;
  }

  .hydrogen-copy a {
    width: 100%;
    min-width: 0;
    height: 50px;
    margin-top: 24px;
    font-size: 13px;
  }

  .hydrogen-panel {
    grid-template-columns: 1fr;
  }

  .hydrogen-panel article {
    min-height: auto;
    padding: 24px 22px;
    border-right: 0;
    border-bottom: 1px solid #dce9df;
  }

  .hydrogen-panel article:last-child {
    border-bottom: 0;
  }

  .hydrogen-panel span {
    margin-bottom: 20px;
  }

  .hydrogen-panel h3 {
    font-size: 18px;
  }

  .hydrogen-visual {
    min-height: 260px;
  }

  .hydrogen-bus {
    left: 18px;
    right: 82px;
    bottom: 48px;
    height: 100px;
    border-radius: 24px 38px 12px 12px;
  }

  .hydrogen-bus::before {
    left: 16px;
    right: 20px;
    top: 18px;
    height: 32px;
  }

  .hydrogen-bus-sign {
    left: 34px;
    top: 27px;
    font-size: 10px;
  }

  .hydrogen-bus-window {
    right: 18px;
    top: 18px;
    width: 52px;
    height: 32px;
  }

  .hydrogen-bus-wheel {
    width: 28px;
    height: 28px;
    border-width: 7px;
  }

  .hydrogen-bus-wheel-front {
    right: 34px;
  }

  .hydrogen-bus-wheel-back {
    left: 38px;
  }

  .hydrogen-charger {
    right: 16px;
    bottom: 42px;
    width: 58px;
    height: 112px;
  }

  .hydrogen-charger strong {
    font-size: 23px;
  }

  .hydrogen-turbine-one {
    right: 112px;
    top: 38px;
  }

  .hydrogen-turbine-two {
    display: none;
  }

  .hydrogen-detail-hero {
    min-height: 0;
    padding: 108px 20px 48px;
  }

  .hydrogen-detail-hero-copy,
  .hydrogen-detail-visual,
  .hydrogen-detail-section,
  .hydrogen-process-section,
  .hydrogen-re100-section,
  .hydrogen-closing-section {
    width: calc(100vw - 40px);
  }

  .hydrogen-detail-hero-copy h1 {
    font-size: 38px;
    line-height: 1.12;
    word-break: keep-all;
  }

  .hydrogen-detail-hero-copy strong {
    margin-top: 22px;
    font-size: 15px;
    line-height: 1.72;
    word-break: keep-all;
  }

  .hydrogen-detail-visual {
    min-height: 260px;
    padding: 28px;
  }

  .hydrogen-detail-section,
  .hydrogen-process-section,
  .hydrogen-re100-section,
  .hydrogen-closing-section {
    padding: 50px 0;
  }

  .hydrogen-detail-heading {
    margin-bottom: 28px;
  }

  .hydrogen-detail-heading h2,
  .hydrogen-re100-card h2,
  .hydrogen-closing-section h2 {
    font-size: 27px;
    line-height: 1.22;
    word-break: keep-all;
  }

  .hydrogen-text-grid article,
  .hydrogen-process article {
    padding: 24px 20px;
  }

  .hydrogen-process {
    grid-template-columns: 1fr;
  }

  .hydrogen-process article,
  .hydrogen-process article:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid #dbe2e6;
  }

  .hydrogen-process article:last-child {
    border-bottom: 0;
  }

  .hydrogen-process span {
    margin-bottom: 28px;
  }

  .hydrogen-re100-card {
    padding: 30px 24px;
  }

  .hydrogen-re100-card strong,
  .hydrogen-closing-section strong {
    font-size: 14px;
    line-height: 1.76;
    word-break: keep-all;
  }

  .hydrogen-closing-section a {
    width: 100%;
    height: 52px;
  }

}

@keyframes tech-bg-drift {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(-72px, 44px, 0);
  }
}

/* Hydrogen section ? clean card layout */
.hydrogen-section {
  position: relative;
  min-height: 0;
  padding: 58px 68px 62px;
  color: #0d1b2a;
  background:
    radial-gradient(circle at 22% 6%, rgba(126, 201, 255, 0.28), transparent 34%),
    radial-gradient(circle at 82% 24%, rgba(187, 230, 255, 0.34), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, #f4fbff 58%, #eaf7ff 100%);
  border-top: 1px solid rgba(90, 173, 229, 0.18);
}

.hydrogen-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(90, 173, 229, 0.08) 48%, rgba(255, 255, 255, 0) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.62) 0%, rgba(255, 255, 255, 0) 100%);
  opacity: 1;
  pointer-events: none;
}

.hydrogen-section::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, transparent 0 12%, rgba(111, 191, 255, 0.16) 12% 12.08%, transparent 12.08% 100%),
    linear-gradient(90deg, transparent 0 72%, rgba(111, 191, 255, 0.12) 72% 72.08%, transparent 72.08% 100%);
  opacity: 0.7;
  pointer-events: none;
}

.hydrogen-inner {
  display: grid;
  position: relative;
  z-index: 1;
  grid-template-columns: 1fr;
  gap: 28px;
  width: min(100%, 1320px);
  margin: 0 auto;
  justify-items: center;
}

.hydrogen-copy {
  width: min(100%, 900px);
  text-align: center;
  justify-items: center;
}

.hydrogen-copy p {
  margin: 0 0 12px;
  color: #1688d8;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.hydrogen-copy h2 {
  margin: 0;
  color: #071827;
  font-size: clamp(38px, 3.4vw, 56px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.055em;
  word-break: keep-all;
}

.hydrogen-copy strong {
  display: grid;
  gap: 7px;
  max-width: none;
  margin-top: 18px;
  color: #4d6678;
  font-size: clamp(16px, 1.35vw, 21px);
  line-height: 1.38;
  font-weight: 500;
}

.hydrogen-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: 100%;
}

.hydrogen-use-card {
  display: grid;
  min-height: 206px;
  padding: 30px 30px 26px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(113, 185, 236, 0.28);
  border-radius: 14px;
  box-shadow: 0 16px 36px rgba(42, 118, 174, 0.1);
  backdrop-filter: blur(12px);
  align-content: start;
  transition: border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.hydrogen-use-card:nth-child(1) {
  border-color: rgba(113, 185, 236, 0.34);
}

.hydrogen-use-card.is-featured {
  border-color: rgba(22, 136, 216, 0.45);
  background: rgba(255, 255, 255, 0.94);
}

.hydrogen-use-card:nth-child(3) {
  border-color: rgba(113, 185, 236, 0.34);
}

.hydrogen-use-card:hover {
  background: #fff;
  border-color: rgba(22, 136, 216, 0.5);
  box-shadow: 0 20px 42px rgba(42, 118, 174, 0.16);
  transform: translateY(-3px);
}

.hydrogen-card-icon {
  display: none;
  position: relative;
  width: 68px;
  height: 68px;
  margin-bottom: 42px;
  background: #edf7e6;
  border-radius: 16px;
}

.hydrogen-card-icon::before,
.hydrogen-card-icon::after {
  content: "";
  position: absolute;
  left: 25px;
  top: 18px;
  width: 18px;
  height: 32px;
  border: 2px solid #3b7a24;
}

.hydrogen-card-icon::after {
  transform: rotate(45deg);
  border-left: 0;
  border-bottom: 0;
}

.hydrogen-use-card p {
  margin: 0 0 8px;
  color: #1688d8;
  font-size: 15px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hydrogen-use-card h3 {
  margin: 0;
  color: #071827;
  font-size: clamp(22px, 1.8vw, 30px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.045em;
  word-break: keep-all;
}

.hydrogen-use-card strong {
  display: block;
  margin-top: 14px;
  color: #516879;
  font-size: 15px;
  line-height: 1.64;
  font-weight: 500;
  word-break: keep-all;
}

.hydrogen-use-card em {
  display: block;
  margin-top: auto;
  padding-top: 15px;
  color: #6a8192;
  border-top: 1px solid rgba(113, 185, 236, 0.24);
  font-size: 14px;
  line-height: 1.4;
  font-style: normal;
  font-weight: 600;
}

.hydrogen-use-card.is-featured em {
  color: #1688d8;
  border-top-color: rgba(22, 136, 216, 0.28);
}

.hydrogen-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(100%, 840px);
  padding: 18px 28px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(113, 185, 236, 0.24);
  border-radius: 14px;
  box-shadow: 0 14px 30px rgba(42, 118, 174, 0.08);
  backdrop-filter: blur(10px);
}

.hydrogen-facts div {
  display: grid;
  gap: 5px;
  justify-items: center;
  text-align: center;
  border-right: 1px solid rgba(113, 185, 236, 0.24);
}

.hydrogen-facts div:last-child {
  border-right: 0;
}

.hydrogen-facts strong {
  color: #071827;
  font-size: clamp(25px, 2.2vw, 36px);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.hydrogen-facts div:first-child strong {
  color: #1688d8;
  font-weight: 800;
}

.hydrogen-facts span {
  color: #667f91;
  font-size: 13px;
  line-height: 1.3;
  font-weight: 500;
}

.hydrogen-quote {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-width: 260px;
  min-height: 50px;
  padding: 0 26px;
  color: #fff;
  background: #1688d8;
  border: 1px solid #1688d8;
  border-radius: 8px;
  font-size: 15px;
  line-height: 1;
  font-weight: 800;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.hydrogen-quote:hover {
  color: #1688d8;
  background: #fff;
  border-color: rgba(22, 136, 216, 0.52);
  box-shadow: 0 12px 24px rgba(42, 118, 174, 0.16);
}

.hydrogen-quote span {
  font-size: 18px;
}

.group-company-section {
  padding: 48px 48px 64px;
  background: #f7f9fc;
  border-top: none;
}

.group-company-inner {
  width: min(100%, 1280px);
  margin: 0 auto;
  padding: 40px 28px 28px;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
}

.group-company-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 40px;
  align-items: center;
  min-height: 222px;
  padding: 0 0 22px;
}

.group-company-head p {
  margin: 0 0 8px;
  color: #202633;
  font-size: 13px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.group-company-head h2 {
  margin: 0;
  color: #122653;
  font-size: clamp(38px, 4.1vw, 56px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.06em;
  word-break: keep-all;
}

.group-company-head strong {
  display: block;
  max-width: 560px;
  margin-top: 20px;
  color: #66728a;
  font-size: 15px;
  line-height: 1.68;
  font-weight: 500;
  word-break: keep-all;
}

.group-company-orbit {
  display: grid;
  position: relative;
  width: 282px;
  height: 282px;
  justify-self: center;
  place-items: center;
  color: #12346f;
  background: transparent;
  border-radius: 50%;
  overflow: hidden;
}

.group-company-orbit::before {
  content: "";
  position: absolute;
  inset: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.46);
  pointer-events: none;
}

.group-company-orbit::after {
  content: "";
  position: absolute;
  inset: 72px;
  border-radius: 50%;
  pointer-events: none;
}

.group-company-orbit-core {
  display: grid;
  position: relative;
  z-index: 1;
  justify-items: center;
  gap: 8px;
}

.group-company-orbit-core::before,
.group-company-orbit-core::after,
.group-company-orbit span::before,
.group-company-orbit span::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  background: #79a5fb;
  border-radius: 50%;
}

.group-company-orbit-core::before {
  top: -56px;
  left: 50%;
  transform: translateX(-50%);
}

.group-company-orbit-core::after {
  right: -84px;
  top: 44px;
}

.group-company-orbit span::before {
  left: -84px;
  top: -24px;
}

.group-company-orbit span::after {
  left: 50%;
  bottom: -58px;
  transform: translateX(-50%);
}

.group-company-orbit img {
  width: 118px;
  height: 54px;
  object-fit: contain;
}

.group-company-orbit span {
  position: relative;
  color: #12346f;
  font-size: 22px;
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.group-company-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  position: relative;
  z-index: 2;
}

.group-company-card {
  display: grid;
  min-height: 218px;
  padding: 24px 18px 22px;
  color: #14233d;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid transparent;
  border-radius: 12px;
  text-align: center;
  text-decoration: none;
  align-content: start;
  justify-items: center;
  box-shadow: none;
  transition:
    background-color 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.group-company-card:hover {
  background: rgba(255, 255, 255, 0.86);
  border-color: #b8c7d8;
  box-shadow: 0 4px 8px rgba(47, 73, 107, 0.1);
  transform: translateY(-4px);
}

.group-company-card img {
  width: 128px;
  height: 54px;
  margin: 0 auto 18px;
  object-fit: contain;
}

.group-company-card img[src*="re100bus_new_logo"] {
  width: 150px;
  height: 58px;
  object-fit: cover;
  object-position: center;
}

.group-company-card h3 {
  margin: 0;
  color: #243f69;
  font-size: 16px;
  line-height: 1.2;
  font-weight: 900;
}

.group-company-card p {
  margin: 6px 0 14px;
  color: #2f496b;
  font-size: 14px;
  line-height: 1.35;
  font-weight: 700;
}

.group-company-card strong {
  display: block;
  color: #6a7485;
  font-size: 13px;
  line-height: 1.58;
  font-weight: 500;
  word-break: keep-all;
}

.site-footer {
  background: #f7f9fc;
  border-top: 1px solid rgba(47, 73, 107, 0.14);
  color: #14233d;
}

.site-footer-inner {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
  gap: 72px;
  width: min(100%, 1280px);
  margin: 0 auto;
  padding: 54px 48px 38px;
}

.footer-brand {
  display: grid;
  align-content: start;
  justify-items: start;
  gap: 18px;
}

.footer-logo {
  display: inline-flex;
  width: 188px;
  height: 52px;
  overflow: hidden;
}

.footer-logo img {
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.footer-brand p {
  max-width: 360px;
  margin: 0;
  color: #66728a;
  font-size: 15px;
  line-height: 1.64;
  font-weight: 500;
  word-break: keep-all;
}

.footer-contact {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(47, 73, 107, 0.18);
  border-radius: 8px;
  color: #2f496b;
  font-size: 13px;
  line-height: 1;
  font-weight: 800;
  transition:
    background-color 160ms ease,
    border-color 160ms ease,
    color 160ms ease;
}

.footer-contact:hover {
  background: #fff;
  border-color: #2f496b;
  color: #14233d;
}

.footer-phone {
  display: grid;
  gap: 4px;
  color: #122653;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.footer-phone span {
  font-size: 18px;
  line-height: 1.35;
}

.footer-phone a {
  color: inherit;
  font-size: 38px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.footer-company {
  display: grid;
  gap: 20px;
}

.footer-company-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(47, 73, 107, 0.16);
}

.footer-company-title strong {
  color: #122653;
  font-size: 22px;
  line-height: 1.2;
  font-weight: 900;
}

.footer-company-title span {
  color: #7a8494;
  font-size: 13px;
  line-height: 1.2;
  font-weight: 700;
}

.footer-business-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 34px;
  margin: 0;
}

.footer-business-list div {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(47, 73, 107, 0.1);
}

.footer-business-list .footer-address {
  grid-column: 1 / -1;
}

.footer-business-list dt {
  color: #7a8494;
  font-size: 13px;
  line-height: 1.5;
  font-weight: 700;
  white-space: nowrap;
}

.footer-business-list dd {
  margin: 0;
  color: #263850;
  font-size: 14px;
  line-height: 1.5;
  font-weight: 700;
  word-break: keep-all;
}

.site-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100%, 1280px);
  margin: 0 auto;
  padding: 18px 48px 28px;
  color: #7a8494;
  font-size: 12px;
  line-height: 1.4;
  font-weight: 700;
}

.site-footer-bottom nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.site-footer-bottom a {
  transition: color 160ms ease;
}

.site-footer-bottom a:hover {
  color: #2f496b;
}

@media (max-width: 1400px) {
  .hero-slide-message {
    top: 30%;
    left: clamp(660px, 55vw, 760px);
    right: 42px;
  }

  .hero-slide-message p {
    font-size: clamp(34px, 3.4vw, 50px);
  }

  .hero-slide-message strong {
    max-width: 520px;
    margin-left: 42px;
    font-size: clamp(17px, 1.25vw, 21px);
  }
}

@media (max-width: 1100px) {
  .hero-slide-message {
    top: auto;
    left: auto;
    right: 34px;
    bottom: 88px;
    width: min(50vw, 520px);
  }

  .hero-slide-message p {
    font-size: clamp(30px, 4vw, 46px);
  }

  .hero-slide-message strong {
    max-width: 500px;
    font-size: 18px;
  }

  .hydrogen-section {
    padding: 46px 34px 50px;
  }

  .hydrogen-card-grid {
    gap: 15px;
  }

  .hydrogen-use-card {
    min-height: 162px;
    padding: 22px 20px 20px;
  }

  .hydrogen-use-card strong {
    font-size: 17px;
  }

  .group-company-section {
    padding: 42px 18px 56px;
  }

  .group-company-inner {
    padding: 34px 24px 26px;
    border-radius: 0;
  }

  .group-company-head {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-bottom: 28px;
  }

  .group-company-orbit {
    display: none;
  }

  .group-company-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .site-footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 34px 32px;
  }

  .site-footer-bottom {
    padding: 18px 34px 28px;
  }
}

@media (max-width: 820px) {
  .quick-contact-button {
    right: 14px;
    bottom: 14px;
    width: 147px;
    height: 147px;
    padding: 30px 18px 25px;
  }

  .quick-contact-brand {
    margin-bottom: 10px;
    font-size: 16px;
  }

  .quick-contact-brand::after {
    width: 26px;
    height: 1px;
    margin-top: 28px;
  }

  .quick-contact-button strong {
    gap: 5px;
    margin-top: 12px;
    font-size: 23px;
  }

  .hydrogen-section {
    padding: 42px 20px 46px;
  }

  .hydrogen-inner {
    gap: 19px;
  }

  .hydrogen-copy p {
    margin-bottom: 12px;
    font-size: 12px;
    letter-spacing: 0.16em;
  }

  .hydrogen-copy h2 {
    font-size: 28px;
    line-height: 1.14;
  }

  .hydrogen-copy strong {
    gap: 7px;
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.52;
  }

  .hydrogen-card-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .hydrogen-use-card {
    min-height: 0;
    padding: 24px 20px 26px;
  }

  .hydrogen-card-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 24px;
    border-radius: 12px;
  }

  .hydrogen-card-icon::before,
  .hydrogen-card-icon::after {
    left: 19px;
    top: 13px;
    width: 14px;
    height: 25px;
  }

  .hydrogen-use-card p {
    margin-bottom: 10px;
    font-size: 15px;
  }

  .hydrogen-use-card h3 {
    font-size: 27px;
  }

  .hydrogen-use-card strong {
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.64;
  }

  .hydrogen-use-card em {
    margin-top: 22px;
    padding-top: 19px;
    font-size: 14px;
  }

  .hydrogen-facts {
    grid-template-columns: 1fr;
    padding: 14px 20px;
  }

  .hydrogen-facts div {
    padding: 10px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(113, 185, 236, 0.24);
  }

  .hydrogen-facts div:last-child {
    border-bottom: 0;
  }

  .hydrogen-facts strong {
    font-size: 28px;
  }

  .hydrogen-quote {
    width: 100%;
    min-width: 0;
  }

  .group-company-section {
    padding: 38px 18px 46px;
  }

  .group-company-inner {
    padding: 26px 16px 18px;
    border-radius: 0;
  }

  .group-company-head {
    padding-bottom: 22px;
  }

  .group-company-head p {
    font-size: 11px;
  }

  .group-company-head h2 {
    font-size: 28px;
    line-height: 1.18;
  }

  .group-company-head strong {
    margin-top: 14px;
    font-size: 14px;
  }

  .group-company-orbit {
    min-height: 128px;
    padding: 18px 18px;
  }

  .group-company-orbit img {
    width: 96px;
    height: 46px;
  }

  .group-company-orbit span {
    max-width: 104px;
    font-size: 12px;
  }

  .group-company-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .group-company-card {
    min-height: 0;
    padding: 18px 14px 16px;
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid transparent;
    border-radius: 12px;
  }

  .group-company-card img {
    width: 118px;
    height: 48px;
    margin-bottom: 14px;
  }

  .site-footer-inner {
    gap: 32px;
    padding: 42px 20px 28px;
  }

  .footer-logo {
    width: 146px;
    height: 42px;
  }

  .footer-company-title {
    display: grid;
    justify-content: start;
    gap: 6px;
  }

  .footer-company-title strong {
    font-size: 20px;
  }

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

  .footer-business-list div {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 0;
  }

  .site-footer-bottom {
    display: grid;
    gap: 14px;
    padding: 16px 20px 26px;
  }

  .site-footer-bottom nav {
    justify-content: flex-start;
    gap: 14px;
  }
}

@media (max-width: 820px) {
  .tech-section {
    gap: 18px;
    padding: 34px 16px 38px;
  }

  .tech-copy {
    gap: 12px;
  }

  .tech-copy p {
    font-size: 11px;
    letter-spacing: 0.12em;
  }

  .tech-copy h2 {
    font-size: 22px;
    line-height: 1.18;
  }

  .tech-copy strong {
    font-size: 13px;
    line-height: 1.58;
  }

  .tech-platform {
    padding: 18px 14px 14px;
  }

  .platform-head {
    padding-bottom: 14px;
  }

  .platform-step {
    padding: 18px 14px 17px;
  }

  .platform-step h3 {
    margin-top: 12px;
    font-size: 15px;
  }

  .platform-step p {
    font-size: 12px;
    line-height: 1.5;
  }

  .clients-section {
    padding: 34px 0 38px;
  }

  .clients-head {
    margin-bottom: 20px;
  }

  .clients-head h2 {
    font-size: 22px;
  }

  .esg-section {
    padding: 36px 16px 40px;
  }

  .esg-head {
    margin-bottom: 20px;
  }

  .esg-head h2 {
    font-size: 29px;
  }

  .esg-grid {
    gap: 10px;
  }

  .esg-card {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .esg-letter,
  .esg-body {
    min-height: 116px;
  }

  .esg-letter {
    font-size: 28px;
  }

  .esg-body {
    padding: 14px;
  }

  .esg-body h3 {
    font-size: 15px;
  }

  .esg-body p {
    font-size: 13px;
    line-height: 1.5;
  }

  .hydrogen-section {
    padding: 34px 16px 38px;
  }

  .hydrogen-inner {
    gap: 14px;
  }

  .hydrogen-copy h2 {
    font-size: 24px;
  }

  .hydrogen-copy strong {
    font-size: 13px;
    line-height: 1.48;
  }

  .hydrogen-card-grid {
    gap: 10px;
  }

  .hydrogen-use-card {
    padding: 18px 16px 18px;
  }

  .hydrogen-use-card h3 {
    font-size: 22px;
  }

  .hydrogen-use-card strong,
  .hydrogen-use-card em {
    font-size: 13px;
  }

  .hydrogen-facts {
    padding: 10px 16px;
  }

  .hydrogen-facts strong {
    font-size: 24px;
  }

  .group-company-section {
    padding: 26px 16px 30px;
  }

  .group-company-inner {
    padding: 12px 0 0;
  }

  .group-company-head {
    padding-bottom: 14px;
  }

  .group-company-head p {
    margin-bottom: 6px;
    font-size: 10px;
    letter-spacing: 0.12em;
  }

  .group-company-head h2 {
    font-size: 21px;
    line-height: 1.18;
  }

  .group-company-head strong {
    margin-top: 8px;
    font-size: 12px;
    line-height: 1.48;
  }

  .group-company-card {
    padding: 12px 12px 11px;
  }

  .group-company-card img {
    width: 104px;
    height: 38px;
    margin-bottom: 9px;
  }

  .group-company-card h3 {
    font-size: 14px;
  }

  .group-company-card p {
    margin: 4px 0 7px;
    font-size: 12px;
  }

  .group-company-card strong {
    font-size: 11px;
    line-height: 1.42;
  }

  .site-footer-inner {
    gap: 24px;
    padding: 34px 16px 22px;
  }

  .footer-business-list div {
    padding: 9px 0;
  }

  .footer-business-list div:nth-child(3),
  .footer-business-list div:nth-child(4),
  .footer-business-list div:nth-child(5) {
    display: none;
  }

  .site-footer-bottom {
    padding: 14px 16px 22px;
  }
}

@media (max-width: 420px) {
  .esg-card {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .esg-letter {
    min-height: 122px;
    font-size: 28px;
  }

  .esg-body {
    min-height: 122px;
    padding: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-card {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-stage::before {
    animation: none;
  }

  .client-track {
    animation: none;
  }

  .tech-section::before {
    animation: none;
  }
}