:root {
  --navy: #071d49;
  --ink: #0d2b5f;
  --blue: #1687dc;
  --lake: #62c9ed;
  --mist: #f3f6f9;
  --snow: #fff;
  --steel: #68788d;
  --line: rgba(7, 29, 73, 0.12);
  --font: "Source Han Sans SC", "Source Han Sans CN", "思源黑体", "Noto Sans CJK SC", "Noto Sans SC", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--mist);
  font-family: var(--font);
}

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

.loader {
  position: fixed;
  z-index: 100;
  display: flex;
  inset: 0;
  align-items: center;
  justify-content: center;
  gap: 22px;
  color: var(--snow);
  background: var(--navy);
}

.loader-mark,
.brand span {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 50%;
  color: var(--snow);
  background: var(--navy);
  font-weight: 800;
}

.loader-mark {
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: transparent;
}

.loader p {
  display: flex;
  margin: 0;
  flex-direction: column;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.45;
}

.scroll-progress {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--lake));
  transform: scaleX(0);
  transform-origin: left center;
}

.site-nav {
  position: fixed;
  z-index: 30;
  top: 18px;
  left: 50%;
  display: grid;
  width: min(1180px, calc(100% - 40px));
  min-height: 68px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 12px 32px rgba(7, 29, 73, 0.06);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand span {
  width: 38px;
  height: 38px;
}

.site-nav nav {
  display: flex;
  justify-content: center;
  gap: 34px;
  font-size: 14px;
  font-weight: 700;
}

.nav-cta,
.primary-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  color: var(--snow);
  background: var(--navy);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.36), 0 8px 20px rgba(7, 29, 73, 0.16);
  font-size: 14px;
  font-weight: 800;
}

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  grid-template-columns: minmax(0, 1fr) minmax(440px, 0.86fr);
  grid-template-rows: 1fr auto;
  gap: 36px;
  overflow: hidden;
  align-items: center;
  padding: 142px max(32px, calc((100vw - 1180px) / 2)) 38px;
  background:
    radial-gradient(circle at 76% 24%, rgba(98, 201, 237, 0.48), transparent 24vw),
    radial-gradient(circle at 88% 12%, rgba(83, 120, 255, 0.15), transparent 22vw),
    linear-gradient(145deg, #fff 0%, #f4fbff 53%, #e9f8fd 100%);
}

.hero-glow {
  position: absolute;
  top: 5%;
  right: 13%;
  width: 28vw;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(116, 220, 255, 0.22);
  filter: blur(48px);
}

.hero-copy {
  position: relative;
  z-index: 4;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  color: var(--navy);
  font-size: clamp(76px, 7.4vw, 118px);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 0.88;
}

.hero-line {
  display: block;
}

h1 em {
  color: var(--lake);
  font-style: normal;
}

.hero-intro {
  margin: 30px 0 0;
  color: rgba(13, 43, 95, 0.78);
  font-size: 20px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 34px;
}

.text-button {
  color: var(--navy);
  font-size: 15px;
  font-weight: 800;
}

.text-button span {
  display: inline-block;
  margin-left: 6px;
  transition: transform 220ms ease;
}

.text-button:hover span {
  transform: translate(4px, 4px);
}

.hero-scene {
  position: relative;
  min-height: 570px;
}

.scene-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(22, 135, 220, 0.16);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.orbit-one {
  width: 530px;
  height: 360px;
}

.orbit-two {
  width: 430px;
  height: 500px;
}

.orbit-three {
  width: 600px;
  height: 600px;
}

.scene-image {
  position: absolute;
  overflow: hidden;
  margin: 0;
  border: 10px solid rgba(255, 255, 255, 0.62);
  border-radius: 32px;
  box-shadow: 0 30px 80px rgba(7, 29, 73, 0.17);
  backdrop-filter: blur(14px);
  will-change: transform;
}

.scene-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scene-main {
  z-index: 3;
  top: 48px;
  left: 40px;
  width: 350px;
  height: 470px;
}

.scene-side {
  z-index: 2;
  top: 180px;
  right: 8px;
  width: 280px;
  height: 330px;
}

.scene-chip {
  position: absolute;
  z-index: 5;
  display: flex;
  min-width: 120px;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.64);
  box-shadow: 0 12px 36px rgba(7, 29, 73, 0.08);
  backdrop-filter: blur(16px);
}

.scene-chip strong {
  color: var(--navy);
  font-size: 20px;
}

.scene-chip span {
  color: var(--steel);
  font-size: 11px;
  font-weight: 700;
}

.chip-ai {
  top: 30px;
  right: 60px;
}

.chip-iot {
  right: 26px;
  bottom: 12px;
}

.chip-rd {
  bottom: 44px;
  left: -10px;
}

.hero-bottom {
  z-index: 5;
  display: flex;
  grid-column: 1 / -1;
  align-items: end;
  justify-content: space-between;
}

.hero-metrics {
  display: flex;
  gap: 36px;
}

.hero-metrics span {
  display: flex;
  flex-direction: column;
  color: var(--steel);
  font-size: 12px;
  font-weight: 700;
}

.hero-metrics strong {
  color: var(--navy);
  font-size: 28px;
}

.scroll-cue {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--steel);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.scroll-cue i {
  display: block;
  width: 36px;
  height: 1px;
  background: var(--lake);
}

.client-rail {
  overflow: hidden;
  padding: 20px 0;
  border-block: 1px solid var(--line);
  background: var(--snow);
}

.client-track {
  display: flex;
  width: max-content;
  gap: 56px;
  color: var(--steel);
  font-size: 16px;
  font-weight: 800;
  will-change: transform;
}

.about {
  padding: 146px 0 132px;
}

.about-heading,
.solutions-heading,
.featured-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 56px;
  align-items: end;
}

.about-heading p,
.solutions-heading p,
.featured-heading > p {
  margin: 0;
  color: var(--steel);
  font-size: 16px;
  line-height: 1.7;
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 72px;
}

.strength-grid article {
  min-height: 286px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 50px rgba(7, 29, 73, 0.05);
}

.strength-grid b {
  color: var(--lake);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.strength-grid h3 {
  margin: 56px 0 14px;
  color: var(--navy);
  font-size: 23px;
}

.strength-grid p {
  margin: 0;
  color: var(--steel);
  font-size: 14px;
  line-height: 1.7;
}

.solutions {
  padding: 132px 0;
  color: var(--snow);
  background:
    radial-gradient(circle at 82% 10%, rgba(98, 201, 237, 0.25), transparent 32vw),
    var(--navy);
}

.solutions h2 {
  color: var(--snow);
}

.solutions h2 span {
  color: var(--lake);
}

.solutions-heading p {
  color: rgba(255, 255, 255, 0.65);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 74px;
}

.solution-grid article {
  min-height: 350px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
}

.solution-grid span,
.featured-card span {
  color: var(--lake);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.solution-grid h3 {
  margin-top: 72px;
  color: var(--snow);
  font-size: 30px;
}

.solution-grid p {
  color: rgba(255, 255, 255, 0.68);
  font-size: 15px;
  line-height: 1.7;
}

.solution-grid strong {
  display: block;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 13px;
}

.section-shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.case-intro {
  padding: 146px 0 72px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: end;
}

h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(52px, 5.3vw, 78px);
  letter-spacing: 0;
  line-height: 0.98;
}

h2 span {
  color: var(--lake);
}

.section-heading p,
.panel-heading p,
.capability-intro,
.capability-grid p {
  margin: 0;
  color: var(--steel);
  font-size: 16px;
  line-height: 1.6;
}

.horizontal-story {
  position: relative;
  overflow: hidden;
  background: var(--mist);
}

.horizontal-track {
  display: flex;
  width: 400vw;
  will-change: transform;
}

.case-panel {
  display: grid;
  width: 100vw;
  min-height: 100svh;
  flex: 0 0 100vw;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 34px;
  align-items: center;
  padding: 84px max(32px, calc((100vw - 1180px) / 2));
}

.panel-heading span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.panel-heading h2 {
  margin: 14px 0 22px;
  font-size: clamp(54px, 5vw, 76px);
}

.case-grid {
  display: grid;
  min-height: 620px;
  grid-template-columns: 1.16fr 0.84fr;
  grid-template-rows: 1fr 1fr;
  gap: 18px;
}

.case-card {
  position: relative;
  overflow: hidden;
  margin: 0;
  border-radius: 26px;
  background: var(--snow);
  box-shadow: 0 20px 52px rgba(7, 29, 73, 0.08);
}

.case-card.featured {
  grid-row: 1 / 3;
}

.case-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 640ms ease;
}

.case-card::after {
  position: absolute;
  inset: 45% 0 0;
  background: linear-gradient(transparent, rgba(7, 29, 73, 0.72));
  content: "";
}

.case-card figcaption {
  position: absolute;
  z-index: 2;
  right: 22px;
  bottom: 20px;
  left: 22px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: var(--snow);
}

.case-card strong {
  font-size: 24px;
}

.case-card span {
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.case-card:hover img {
  transform: scale(1.045);
}

.commercial {
  background: #edf9fd;
}

.industrial {
  background: #f0f4fa;
}

.research {
  background: #eef5ff;
}

.featured-work {
  padding: 146px 0;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 72px;
}

.featured-card {
  min-height: 430px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--snow);
  box-shadow: 0 18px 52px rgba(7, 29, 73, 0.06);
}

.featured-card.large {
  grid-column: span 2;
}

.featured-card img {
  display: block;
  width: 100%;
  height: 242px;
  object-fit: cover;
}

.featured-card > div {
  padding: 24px;
}

.featured-card h3 {
  margin: 12px 0;
  font-size: 25px;
}

.featured-card p {
  margin: 0;
  color: var(--steel);
  font-size: 14px;
  line-height: 1.65;
}

.featured-card.callout {
  display: flex;
  align-items: end;
  color: var(--snow);
  background:
    radial-gradient(circle at 80% 12%, rgba(98, 201, 237, 0.46), transparent 50%),
    var(--navy);
}

.featured-card.callout h3 {
  color: var(--snow);
  font-size: 32px;
}

.featured-card.callout p {
  color: rgba(255, 255, 255, 0.68);
}

.featured-card.callout .primary-button {
  width: max-content;
  margin-top: 28px;
  color: var(--navy);
  background: var(--snow);
}

.capability {
  position: relative;
  overflow: hidden;
  padding: 144px 0;
  color: var(--snow);
  background: var(--navy);
}

.capability-glow {
  position: absolute;
  top: -260px;
  right: -100px;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: rgba(38, 145, 222, 0.44);
  filter: blur(90px);
}

.capability h2 {
  max-width: 980px;
  color: var(--snow);
}

.capability h2 span {
  color: rgba(255, 255, 255, 0.52);
}

.capability-intro {
  max-width: 780px;
  margin-top: 30px;
  color: rgba(255, 255, 255, 0.68);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 80px;
}

.capability-grid article {
  min-height: 242px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.capability-grid b {
  display: inline-flex;
  margin-bottom: 50px;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--navy);
  background: var(--snow);
  font-size: 11px;
}

.capability-grid h3 {
  margin: 0;
  color: var(--snow);
  font-size: 24px;
}

.capability-grid p {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.64);
}

.contact {
  padding: 146px 0;
}

.contact h2 {
  max-width: 940px;
}

.contact-row {
  display: flex;
  width: min(680px, 100%);
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 48px;
  padding: 8px 8px 8px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--snow);
  box-shadow: 0 12px 36px rgba(7, 29, 73, 0.06);
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px max(24px, calc((100vw - 1180px) / 2));
  color: rgba(255, 255, 255, 0.72);
  background: var(--navy);
  font-size: 13px;
}

footer strong {
  color: var(--snow);
}

@media (hover: hover) and (pointer: fine) {
  .magnetic {
    will-change: transform;
  }
}

@media (max-width: 900px) {
  .site-nav {
    grid-template-columns: 1fr auto;
  }

  .site-nav nav {
    display: none;
  }

  .hero {
    display: block;
    min-height: auto;
    padding: 150px 24px 40px;
  }

  h1 {
    font-size: clamp(66px, 18vw, 96px);
  }

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

  .hero-scene {
    min-height: 430px;
    margin-top: 48px;
    transform: scale(0.84);
    transform-origin: left top;
  }

  .hero-bottom {
    margin-top: -44px;
  }

  .scroll-cue {
    display: none;
  }

  .section-heading,
  .about-heading,
  .solutions-heading,
  .featured-heading,
  .case-panel {
    display: block;
  }

  .about,
  .solutions,
  .featured-work {
    padding: 96px 0;
  }

  .strength-grid,
  .solution-grid,
  .featured-grid {
    grid-template-columns: 1fr;
    margin-top: 48px;
  }

  .strength-grid article {
    min-height: 220px;
  }

  .featured-card.large {
    grid-column: auto;
  }

  .case-intro {
    padding: 96px 0 48px;
  }

  .horizontal-track {
    display: block;
    width: auto;
  }

  .case-panel {
    width: auto;
    min-height: auto;
    padding: 56px 24px;
  }

  .case-grid {
    min-height: auto;
    margin-top: 28px;
    grid-template-columns: 1fr;
    grid-template-rows: repeat(3, 320px);
  }

  .case-card.featured {
    grid-row: auto;
  }

  .capability {
    padding: 96px 0;
  }

  .capability-grid {
    grid-template-columns: 1fr;
    margin-top: 48px;
  }

  .capability-grid article {
    min-height: 190px;
  }

  .contact {
    padding: 96px 0;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

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