:root {
  --bg: #040914;
  --panel: rgba(10, 21, 36, 0.74);
  --panel-strong: rgba(12, 28, 48, 0.92);
  --line: rgba(130, 200, 255, 0.22);
  --line-strong: rgba(87, 175, 255, 0.48);
  --text: #edf7ff;
  --muted: #9fb4c9;
  --blue: #2f8dff;
  --cyan: #54e1ff;
  --green: #54f0b2;
  --warning: #f6c65b;
  --radius: 8px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(4, 9, 20, 0.88), #040914 44%),
    radial-gradient(circle at 15% 18%, rgba(47, 141, 255, 0.24), transparent 28%),
    radial-gradient(circle at 82% 8%, rgba(84, 240, 178, 0.14), transparent 24%),
    #040914;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", Arial, sans-serif;
  overflow-x: hidden;
}

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

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

#particle-field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.66;
  z-index: 0;
}

.site-shell {
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  min-height: 76px;
  margin: 0 auto;
  padding: 14px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 54px;
  height: 54px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(84, 225, 255, 0.34));
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-family: "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(5, 12, 24, 0.64);
}

.site-nav a {
  padding: 10px 13px;
  border-radius: 6px;
  color: #c7d7e6;
  font-size: 14px;
  transition: background 180ms ease, color 180ms ease;
}

.site-nav a:hover,
.site-nav .nav-cta {
  color: white;
  background: rgba(47, 141, 255, 0.18);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(9, 21, 36, 0.8);
}

.menu-toggle span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 6px auto;
  background: white;
}

.section-panel {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 96px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  align-items: center;
  gap: 52px;
  min-height: calc(100vh - 76px);
  padding-top: 56px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 8vw, 84px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  max-width: 780px;
  margin-bottom: 18px;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  font-size: 22px;
  line-height: 1.3;
}

.hero-lede,
.section-heading,
.about-copy p,
.case-copy p,
.contact-card p {
  color: #c5d5e5;
  line-height: 1.86;
}

.hero-lede {
  max-width: 690px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0;
}

.primary-button,
.ghost-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
}

.primary-button {
  color: #02111f;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  box-shadow: 0 16px 46px rgba(47, 141, 255, 0.38);
}

.ghost-button {
  border: 1px solid var(--line-strong);
  color: #d7ebff;
  background: rgba(10, 22, 39, 0.72);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(118px, 1fr));
  gap: 12px;
}

.metric-grid article,
.glass-card,
.product-card,
.contact-card,
.timeline,
.flow-list,
.case-copy {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(15, 32, 53, 0.82), rgba(4, 12, 24, 0.64));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.metric-grid article {
  padding: 18px;
}

.metric-grid strong {
  display: inline-flex;
  align-items: baseline;
  flex-wrap: nowrap;
  gap: 2px;
  color: white;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 36px;
  line-height: 1;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.metric-unit {
  display: inline-block;
  font-size: 1em;
  line-height: 1;
}

.metric-label {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  perspective: 1200px;
}

.orbital-card {
  position: relative;
  min-height: 500px;
  padding: 16px;
  border: 1px solid rgba(84, 225, 255, 0.24);
  border-radius: 8px;
  background: rgba(9, 19, 34, 0.7);
  box-shadow: 0 28px 90px rgba(47, 141, 255, 0.25);
  transform: rotateX(4deg) rotateY(-8deg);
  overflow: hidden;
}

.orbital-card::before {
  content: "";
  position: absolute;
  inset: 28px;
  border: 1px solid rgba(84, 225, 255, 0.24);
  border-radius: 8px;
  animation: pulseBorder 3.2s ease-in-out infinite;
}

.orbital-card img {
  width: 100%;
  height: 468px;
  border-radius: 6px;
  object-fit: contain;
  object-position: center;
  background: #061120;
  filter: saturate(1.15) contrast(1.05);
}

.scanline {
  position: absolute;
  inset: 16px;
  background: linear-gradient(180deg, transparent, rgba(84, 225, 255, 0.16), transparent);
  animation: scan 3.6s linear infinite;
}

.floating-chip {
  position: absolute;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  color: #ddf7ff;
  background: rgba(4, 14, 30, 0.78);
  box-shadow: 0 0 28px rgba(84, 225, 255, 0.22);
  font-size: 13px;
}

.chip-one {
  top: 70px;
  right: 28px;
}

.chip-two {
  left: 30px;
  bottom: 115px;
}

.chip-three {
  right: 48px;
  bottom: 54px;
}

.section-heading {
  margin-bottom: 34px;
}

.about-layout,
.solution-layout,
.case-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(340px, 1.08fr);
  gap: 24px;
  align-items: stretch;
}

.about-copy {
  font-size: 18px;
}

.timeline,
.flow-list,
.case-copy,
.contact-card {
  padding: 28px;
}

.timeline div,
.flow-list div {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(130, 200, 255, 0.16);
}

.timeline div:last-child,
.flow-list div:last-child {
  border-bottom: 0;
}

.timeline span,
.flow-list span,
.card-index,
.product-card b {
  color: var(--cyan);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 30px;
  font-weight: 700;
}

.timeline p,
.flow-list p {
  margin: 0;
  color: #c3d3e3;
  line-height: 1.7;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.glass-card {
  min-height: 270px;
  padding: 24px;
  transition: transform 220ms ease, border-color 220ms ease;
}

.glass-card:hover,
.product-card:hover {
  border-color: rgba(84, 225, 255, 0.56);
  transform: translateY(-6px);
}

.glass-card p,
.product-card p {
  color: var(--muted);
  line-height: 1.78;
}

.product-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.product-card {
  min-height: 330px;
  padding: 26px;
  transition: transform 220ms ease, border-color 220ms ease;
}

.product-card b {
  display: block;
  margin-bottom: 28px;
  font-size: 34px;
}

.solution-map,
.case-image {
  position: relative;
  min-height: 380px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.solution-map img,
.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.05);
}

.solution-map::after,
.case-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(4, 9, 20, 0.62));
}

.case-layout {
  grid-template-columns: minmax(380px, 1.08fr) minmax(0, 0.92fr);
}

.case-copy ul {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.case-copy li {
  position: relative;
  padding-left: 22px;
  color: #d2e5f6;
}

.case-copy li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px var(--green);
}

.contact {
  padding-bottom: 54px;
}

.contact-card {
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(47, 141, 255, 0.2), transparent 46%),
    radial-gradient(circle at 84% 24%, rgba(84, 240, 178, 0.18), transparent 26%);
  pointer-events: none;
}

.contact-card > * {
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 30px;
}

.contact-grid a,
.contact-grid address {
  min-height: 118px;
  padding: 20px;
  border: 1px solid rgba(130, 200, 255, 0.18);
  border-radius: 8px;
  background: rgba(4, 11, 23, 0.52);
  font-style: normal;
}

.contact-grid span {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
}

.contact-grid strong {
  line-height: 1.55;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 620ms ease, transform 620ms ease;
}

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

@keyframes scan {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(100%);
  }
}

@keyframes pulseBorder {
  0%,
  100% {
    opacity: 0.38;
    transform: scale(0.98);
  }
  50% {
    opacity: 1;
    transform: scale(1.01);
  }
}

@media (max-width: 980px) {
  .site-header {
    width: min(100% - 24px, 760px);
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 0;
    display: none;
    width: min(320px, calc(100vw - 24px));
    padding: 12px;
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero,
  .about-layout,
  .solution-layout,
  .case-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
  }

  .advantage-grid,
  .product-rail,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .orbital-card {
    min-height: auto;
    transform: none;
  }

  .orbital-card img {
    height: auto;
  }
}

@media (max-width: 640px) {
  .section-panel {
    width: min(100% - 24px, 560px);
    padding: 64px 0;
  }

  .hero {
    gap: 32px;
  }

  .metric-grid,
  .advantage-grid,
  .product-rail,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .timeline div,
  .flow-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .floating-chip {
    position: static;
    display: inline-flex;
    margin: 8px 8px 0 0;
  }

  .scanline {
    display: none;
  }

  .site-footer {
    flex-direction: column;
  }
}