:root {
  --ink: #071a2c;
  --ink-soft: #0c2a45;
  --cyan: #5de1df;
  --paper: #f5f8f8;
  --white: #ffffff;
  --muted: #60717f;
  --line: rgba(7, 26, 44, 0.14);
  --max-width: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button {
  color: inherit;
  font: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 0.25rem;
  background: var(--white);
  transform: translateY(-160%);
}

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

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  width: 100%;
  color: var(--white);
}

.header-inner {
  width: min(calc(100% - 3rem), var(--max-width));
  height: 6.5rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.brand-mark {
  width: 1.8rem;
  height: 1.8rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.18rem;
  transform: skewY(-18deg);
}

.brand-mark span {
  display: block;
  border-radius: 0.1rem;
  background: var(--cyan);
}

.brand-mark span:nth-child(2) {
  opacity: 0.72;
}

.brand-mark span:nth-child(3) {
  opacity: 0.42;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2.4rem;
  font-size: 0.9rem;
}

.site-nav a {
  position: relative;
  padding: 0.5rem 0;
  color: rgba(255, 255, 255, 0.78);
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

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

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

.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: 47rem;
  height: 100svh;
  overflow: hidden;
  display: grid;
  align-items: center;
  color: var(--white);
  background: var(--ink);
}

.hero-image,
.hero-shade,
.hero-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(3, 17, 31, 0.95) 0%, rgba(3, 17, 31, 0.74) 42%, rgba(3, 17, 31, 0.08) 82%),
    linear-gradient(0deg, rgba(3, 17, 31, 0.64) 0%, transparent 42%);
}

.hero-grid {
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: 5.5rem 5.5rem;
  mask-image: linear-gradient(90deg, black, transparent 74%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 3rem), var(--max-width));
  margin: 4rem auto 0;
}

.eyebrow,
.kicker {
  margin: 0 0 1.6rem;
  color: var(--cyan);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 9em;
  margin: 0;
  font-size: clamp(3rem, 6.7vw, 6rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: 0.02em;
}

.hero-summary {
  margin: 2rem 0 2.2rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  letter-spacing: 0.08em;
}

.hero-link {
  width: fit-content;
  display: flex;
  align-items: center;
  gap: 3.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.54);
  font-size: 0.92rem;
  transition: color 180ms ease, border-color 180ms ease;
}

.hero-link:hover,
.hero-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.hero-index {
  position: absolute;
  z-index: 2;
  right: max(1.5rem, calc((100% - var(--max-width)) / 2));
  bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.72rem;
}

.index-line {
  width: 7rem;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 34%, rgba(255, 255, 255, 0.24) 34%);
}

.section {
  width: min(calc(100% - 3rem), var(--max-width));
  margin: 0 auto;
}

.intro {
  padding: 9rem 0;
  display: grid;
  grid-template-columns: 1fr 2.1fr;
  gap: 4rem;
}

.section-label {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.section-label span {
  color: #12a5aa;
  font-variant-numeric: tabular-nums;
}

.section-label p {
  margin: 0;
}

.intro-copy {
  max-width: 52rem;
}

.intro h2,
.section-heading h2,
.profile h2 {
  margin: 0;
  font-size: clamp(2.25rem, 4.6vw, 4.5rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.035em;
}

.body-copy {
  max-width: 42rem;
  margin: 2.4rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 2;
}

.text-link {
  width: fit-content;
  margin-top: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--ink);
  font-size: 0.9rem;
  transition: color 180ms ease, border-color 180ms ease;
}

.text-link:hover,
.text-link:focus-visible {
  color: #0b979c;
  border-color: #0b979c;
}

.focus {
  width: 100%;
  max-width: none;
  padding: 8rem max(1.5rem, calc((100% - var(--max-width)) / 2));
  color: var(--white);
  background: var(--ink);
}

.section-heading {
  margin-bottom: 5rem;
  display: grid;
  grid-template-columns: 1fr 2.1fr;
  gap: 4rem;
}

.focus .section-label {
  color: rgba(255, 255, 255, 0.55);
}

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

.focus-item {
  min-height: 9.5rem;
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  align-items: center;
  gap: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.focus-number {
  color: var(--cyan);
  font-size: 0.8rem;
}

.focus-item h3 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.45rem, 2.6vw, 2.2rem);
  font-weight: 500;
}

.focus-item h3 a {
  transition: color 180ms ease;
}

.focus-item h3 a:hover,
.focus-item h3 a:focus-visible {
  color: var(--cyan);
}

.focus-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.56);
}

.focus-glyph {
  width: 3.25rem;
  height: 3.25rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(93, 225, 223, 0.42);
  border-radius: 50%;
  color: var(--cyan);
  font-size: 1.4rem;
}

.profile {
  padding: 8rem 0;
}

.profile-panel {
  padding: clamp(2rem, 5vw, 5rem);
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(9, 40, 66, 0.97), rgba(8, 35, 58, 0.9)),
    var(--ink-soft);
  box-shadow: 0 2rem 5rem rgba(7, 26, 44, 0.14);
}

.profile-topline {
  padding-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.82rem;
}

.profile-topline span:first-child {
  color: var(--cyan);
}

.profile-layout {
  padding-top: 4.5rem;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 5rem;
}

.profile dl {
  margin: 0;
}

.profile dl div {
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.profile dt {
  margin-bottom: 0.6rem;
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.78rem;
}

.profile dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
}

.panel-link {
  width: fit-content;
  margin-top: 3rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.42);
  color: var(--white);
  font-size: 0.9rem;
}

.panel-link:hover,
.panel-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.inner-hero {
  position: relative;
  min-height: 35rem;
  padding: 10rem max(1.5rem, calc((100% - var(--max-width)) / 2)) 5.5rem;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 38%, rgba(93, 225, 223, 0.2), transparent 24%),
    linear-gradient(135deg, #061625 0%, #0a2944 100%);
}

.inner-hero::before {
  content: "";
  position: absolute;
  width: 28rem;
  height: 28rem;
  top: 8rem;
  right: max(-8rem, calc((100% - var(--max-width)) / 2));
  border: 1px solid rgba(93, 225, 223, 0.22);
  border-radius: 50%;
  box-shadow:
    0 0 0 4.5rem rgba(93, 225, 223, 0.025),
    0 0 0 9rem rgba(93, 225, 223, 0.018);
}

.inner-hero-services {
  background:
    radial-gradient(circle at 70% 45%, rgba(36, 178, 188, 0.24), transparent 28%),
    linear-gradient(145deg, #041522, #0b304b);
}

.inner-hero-approach {
  background:
    radial-gradient(circle at 78% 50%, rgba(93, 225, 223, 0.16), transparent 26%),
    linear-gradient(135deg, #071a2c, #102d43);
}

.inner-hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.11;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: 5rem 5rem;
  mask-image: linear-gradient(90deg, black, transparent 88%);
}

.inner-hero-content {
  position: relative;
  z-index: 2;
  width: min(48rem, 78%);
}

.inner-hero h1 {
  margin: 0;
  font-size: clamp(3.5rem, 8vw, 7.5rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
}

.inner-hero-content > p:last-child {
  max-width: 34rem;
  margin: 2rem 0 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 1.05rem;
  line-height: 1.8;
}

.page-number {
  position: absolute;
  z-index: 2;
  right: max(1.5rem, calc((100% - var(--max-width)) / 2));
  bottom: 5.8rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.46);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

.page-intro {
  padding: 9rem 0;
  display: grid;
  grid-template-columns: 1fr 2.1fr;
  gap: 4rem;
}

.page-intro-copy h2,
.values h2,
.service-detail h2,
.process h2,
.boundary h2 {
  margin: 0;
  font-size: clamp(2.25rem, 4.6vw, 4.5rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.035em;
}

.fact-band {
  color: var(--white);
  background: var(--ink);
}

.fact-band-inner {
  width: min(calc(100% - 3rem), var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
}

.fact-block {
  min-height: 13rem;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.fact-block:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.fact-block span {
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.78rem;
}

.fact-block strong {
  max-width: 21rem;
  font-size: clamp(1.15rem, 2vw, 1.65rem);
  font-weight: 500;
  line-height: 1.55;
}

.values,
.service-detail,
.process,
.boundary {
  padding: 8rem 0;
}

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

.value-card {
  min-height: 20rem;
  padding: 2.5rem;
  border-right: 1px solid var(--line);
}

.value-card:first-child {
  border-left: 1px solid var(--line);
}

.value-card > span {
  color: #0b979c;
  font-size: 0.78rem;
}

.value-card h3 {
  margin: 5rem 0 1.25rem;
  font-size: 1.65rem;
  font-weight: 500;
}

.value-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.next-page {
  padding: 2rem 0 7rem;
  display: grid;
  grid-template-columns: 1fr 2.1fr;
  gap: 4rem;
  align-items: end;
}

.next-page > p {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.next-page a {
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  font-size: clamp(1.75rem, 3.5vw, 3.2rem);
  transition: color 180ms ease, padding 180ms ease;
}

.next-page a:hover,
.next-page a:focus-visible {
  padding-right: 1rem;
  color: #0b979c;
}

.service-detail-list {
  border-top: 1px solid var(--line);
}

.service-detail-item {
  padding: 3.5rem 0;
  display: grid;
  grid-template-columns: 0.6fr 2fr 1fr;
  gap: 3rem;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 2rem;
}

.service-detail-number,
.service-en {
  color: #0b979c;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.service-en {
  margin: 0 0 1rem;
  text-transform: uppercase;
}

.service-detail-main h3 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  font-weight: 500;
}

.service-detail-main > p:last-child {
  max-width: 36rem;
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
}

.service-detail-item ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-detail-item li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.scope-note {
  margin: 2rem 0 0 auto;
  max-width: 34rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
}

.process-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  list-style: none;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.process-item {
  min-height: 15rem;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1.5rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.process-item > span {
  color: #0b979c;
  font-size: 0.78rem;
}

.process-item h3 {
  margin: 0 0 1.25rem;
  font-size: 1.55rem;
  font-weight: 500;
}

.process-item p {
  max-width: 24rem;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.boundary {
  padding-top: 0;
}

.boundary-panel {
  padding: clamp(2.5rem, 6vw, 5.5rem);
  color: var(--white);
  background:
    radial-gradient(circle at 90% 20%, rgba(93, 225, 223, 0.16), transparent 24%),
    var(--ink);
}

.boundary-panel > div {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 5rem;
  align-items: end;
}

.boundary-panel p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.9;
}

.site-footer {
  padding: 2.1rem max(1.5rem, calc((100% - var(--max-width)) / 2));
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
  color: rgba(255, 255, 255, 0.62);
  background: #04111f;
  font-size: 0.78rem;
}

.site-footer > div {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-mark {
  width: 0.58rem;
  height: 0.58rem;
  display: block;
  background: var(--cyan);
  transform: rotate(45deg);
}

.site-footer strong {
  color: var(--white);
  font-weight: 500;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  justify-self: end;
  color: var(--white);
}

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 5px;
}

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

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

@media (max-width: 760px) {
  .header-inner {
    width: min(calc(100% - 2rem), var(--max-width));
    height: 5rem;
  }

  .brand-name {
    font-size: 0.9rem;
  }

  .menu-toggle {
    position: relative;
    z-index: 22;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    display: grid;
    place-content: center;
    gap: 0.42rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    background: rgba(7, 26, 44, 0.24);
  }

  .menu-toggle span {
    width: 1rem;
    height: 1px;
    display: block;
    background: var(--white);
    transition: transform 180ms ease;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(0.23rem) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-0.23rem) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    padding: 8rem 2rem 3rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    background: rgba(4, 17, 31, 0.98);
    visibility: hidden;
    opacity: 0;
    transition: opacity 180ms ease, visibility 180ms ease;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
  }

  .site-nav a {
    font-size: 1.5rem;
  }

  .hero {
    min-height: 42rem;
    height: 92svh;
  }

  .hero-image {
    object-position: 68% center;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(3, 17, 31, 0.94), rgba(3, 17, 31, 0.34));
  }

  .hero-content {
    width: calc(100% - 2rem);
    margin-top: 3rem;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 12vw, 4rem);
  }

  .hero-summary {
    max-width: 19em;
    line-height: 1.7;
  }

  .hero-index {
    right: 1rem;
    bottom: 1.5rem;
  }

  .inner-hero {
    min-height: 29rem;
    padding: 8rem 1rem 4rem;
  }

  .inner-hero::before {
    width: 17rem;
    height: 17rem;
    top: 9rem;
    right: -8rem;
  }

  .inner-hero-content {
    width: 100%;
  }

  .inner-hero h1 {
    font-size: clamp(3.25rem, 17vw, 5rem);
  }

  .inner-hero-content > p:last-child {
    max-width: 19rem;
  }

  .page-number {
    right: 1rem;
    bottom: 4.25rem;
  }

  .section {
    width: calc(100% - 2rem);
  }

  .intro,
  .section-heading,
  .profile-layout,
  .page-intro,
  .next-page {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .intro,
  .profile,
  .page-intro,
  .values,
  .service-detail,
  .process,
  .boundary {
    padding: 6rem 0;
  }

  .fact-band-inner,
  .value-grid,
  .process-list {
    width: 100%;
    grid-template-columns: 1fr;
  }

  .fact-block {
    min-height: 10rem;
    padding: 2rem 1rem;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .fact-block:first-child {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .fact-block:last-child {
    border-right: 0;
  }

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

  .value-card,
  .value-card:first-child {
    min-height: 14rem;
    padding: 2rem 1rem;
    border-right: 0;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .value-card h3 {
    margin-top: 3rem;
  }

  .next-page {
    padding-top: 1rem;
    padding-bottom: 5rem;
  }

  .service-detail-item {
    padding: 2.75rem 0;
    grid-template-columns: 2.5rem 1fr;
    gap: 1.5rem;
  }

  .service-detail-item ul {
    grid-column: 2;
  }

  .process-list {
    border-left: 0;
  }

  .process-item {
    min-height: 12rem;
    padding: 2rem 1rem;
    grid-template-columns: 2.25rem 1fr;
    border-left: 0;
    border-right: 0;
  }

  .boundary {
    padding-top: 0;
  }

  .boundary-panel {
    margin: 0 -1rem;
    padding: 3.5rem 1rem;
  }

  .boundary-panel > div {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .focus {
    padding: 6rem 1rem;
  }

  .section-heading {
    margin-bottom: 3rem;
  }

  .focus-item {
    min-height: 8.5rem;
    grid-template-columns: 2.5rem 1fr auto;
    gap: 0.75rem;
  }

  .focus-item p {
    font-size: 0.86rem;
    line-height: 1.6;
  }

  .focus-glyph {
    width: 2.5rem;
    height: 2.5rem;
  }

  .profile-panel {
    margin: 0 -1rem;
  }

  .profile-layout {
    padding-top: 3rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .site-footer a {
    justify-self: start;
  }
}