:root {
  --bg-dark: #050b15;
  --bg-darker: #02060d;
  --bg-blue: #081829;
  --text-white: #ffffff;
  --text-dark: #10243f;
  --text-soft: #7b879b;
  --line-blue: #2f8dff;
  --glow-blue: #5fd8ff;
  --accent-orange: #ff8d22;
  --card-border: rgba(17, 63, 122, 0.08);
  --container: min(1280px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-darker);
  color: var(--text-white);
}

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

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

.container {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(2, 6, 13, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(96, 167, 255, 0.08);
}

.header-inner {
  min-height: 92px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
}

.brand img {
  width: clamp(210px, 18vw, 310px);
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 34px;
}

.site-nav a {
  position: relative;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -16px;
  width: 24px;
  height: 3px;
  background: var(--line-blue);
  transform: translateX(-50%) scaleX(0);
  transition: transform 180ms ease;
}

.site-nav a.is-active::after,
.site-nav a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.hotline {
  text-align: right;
}

.hotline span {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}

.hotline strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: transparent;
  border-radius: 12px;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 6px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: #fff;
}

.hero-section {
  position: relative;
  min-height: 700px;
  overflow: hidden;
  background: linear-gradient(180deg, #01040a 0%, #091422 100%);
}

.hero-backdrop {
  position: absolute;
  inset: 0;
}

.hero-backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(3, 9, 19, 0.52) 0%, rgba(3, 9, 19, 0.1) 55%, rgba(3, 9, 19, 0.06) 100%);
}

.hero-content {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: center;
}

.hero-copy {
  max-width: 1120px;
  padding-top: 18px;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(40px, 4.5vw, 68px);
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-copy h1 span {
  display: block;
  white-space: nowrap;
}

.hero-divider {
  width: 56px;
  height: 4px;
  margin: 34px 0 24px;
  background: var(--line-blue);
  border-radius: 999px;
}

.hero-copy p {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.08em;
}

.metrics-section {
  background: linear-gradient(180deg, #061120 0%, #081a2d 100%);
  border-top: 1px solid rgba(80, 150, 255, 0.12);
  border-bottom: 1px solid rgba(80, 150, 255, 0.12);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.metric-card {
  min-height: 134px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
}

.metric-card + .metric-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  bottom: 26px;
  width: 1px;
  background: rgba(255, 255, 255, 0.1);
}

.metric-icon {
  width: 30px;
  height: 30px;
  position: relative;
}

.metric-icon::before,
.metric-icon::after {
  content: "";
  position: absolute;
  inset: 0;
}

.metric-icon.cube::before {
  border: 2px solid #19d7ff;
  border-radius: 4px;
  transform: rotate(45deg) scale(0.78);
}

.metric-icon.users::before {
  inset: 8px 7px 10px 7px;
  border: 2px solid #19d7ff;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
  border-bottom: 0;
}

.metric-icon.users::after {
  inset: 3px 9px auto 9px;
  height: 8px;
  border: 2px solid #19d7ff;
  border-radius: 50%;
}

.metric-icon.folder::before {
  inset: 9px 3px 5px 3px;
  border: 2px solid #19d7ff;
  border-radius: 4px;
}

.metric-icon.folder::after {
  left: 6px;
  top: 6px;
  width: 10px;
  height: 6px;
  border: 2px solid #19d7ff;
  border-bottom: 0;
  border-top-left-radius: 3px;
  border-top-right-radius: 3px;
}

.metric-icon.grid::before {
  inset: 4px;
  background:
    linear-gradient(#19d7ff 0 0) 0 0/10px 10px no-repeat,
    linear-gradient(#19d7ff 0 0) 100% 0/10px 10px no-repeat,
    linear-gradient(#19d7ff 0 0) 0 100%/10px 10px no-repeat,
    linear-gradient(#19d7ff 0 0) 100% 100%/10px 10px no-repeat;
}

.metric-icon.headset::before {
  inset: 4px 5px 8px 5px;
  border: 2px solid #19d7ff;
  border-bottom: 0;
  border-top-left-radius: 18px;
  border-top-right-radius: 18px;
}

.metric-icon.headset::after {
  inset: 14px 2px 6px 2px;
  background:
    linear-gradient(#19d7ff 0 0) left center/4px 12px no-repeat,
    linear-gradient(#19d7ff 0 0) right center/4px 12px no-repeat,
    linear-gradient(#19d7ff 0 0) center bottom/10px 2px no-repeat;
}

.metric-value {
  font-size: 28px;
  font-weight: 700;
}

.metric-value span {
  font-size: 16px;
}

.metric-label {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
}

.products-section,
.ecosystem-section {
  background: #fff;
  color: var(--text-dark);
  padding: 56px 0 68px;
}

.section-head {
  text-align: center;
}

.section-head h2 {
  margin: 0;
  font-size: 52px;
  line-height: 1.2;
}

.section-head p {
  margin: 12px 0 0;
  font-size: 18px;
  color: var(--text-soft);
}

.section-head span {
  display: inline-block;
  width: 56px;
  height: 4px;
  margin-top: 16px;
  border-radius: 999px;
  background: var(--line-blue);
}

.section-head-dark h2,
.section-head-dark p {
  color: #fff;
}

.products-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card {
  background:
    radial-gradient(circle at 50% 14%, rgba(111, 179, 255, 0.18), transparent 32%),
    linear-gradient(180deg, #f7fbff 0%, #eef4fb 100%);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px 16px 18px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(37, 78, 137, 0.06);
}

.product-card h3 {
  margin: 0;
  font-size: 23px;
}

.product-card p {
  margin: 10px 0 14px;
  font-size: 14px;
  color: #4b5c74;
}

.product-visual {
  border-radius: 14px;
  background:
    radial-gradient(circle at 50% 50%, rgba(120, 190, 255, 0.12), transparent 58%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.56) 0%, rgba(237, 244, 253, 0.9) 100%);
  padding: 6px 4px 0;
}

.product-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.product-card ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 12px 0 0;
  padding: 0;
  font-size: 13px;
  color: #375175;
}

.product-card li::before {
  content: "◎";
  margin-right: 4px;
  color: #5e9dff;
}

.products-action {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.products-action a {
  min-width: 224px;
  padding: 14px 28px;
  border-radius: 6px;
  background: linear-gradient(90deg, #2c7dff 0%, #2758ff 100%);
  color: #fff;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
}

.solutions-section {
  background:
    radial-gradient(circle at top center, rgba(45, 125, 255, 0.15), transparent 32%),
    linear-gradient(180deg, #030812 0%, #040c16 100%);
  padding: 56px 0 66px;
}

.solutions-section .container {
  position: relative;
}

.solutions-track {
  position: relative;
  height: 72px;
  margin: 30px 18px 6px;
}

.track-segment {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, rgba(160, 215, 255, 0.62), rgba(231, 247, 255, 0.96));
  box-shadow: 0 0 8px rgba(131, 214, 255, 0.16);
}

.track-segment-left-up {
  left: 12.4%;
  top: 42px;
  width: 12.5%;
  transform: rotate(-19deg);
  transform-origin: left center;
}

.track-segment-left-down {
  left: 26.1%;
  top: 22px;
  width: 12.6%;
  transform: rotate(16deg);
  transform-origin: left center;
}

.track-segment-right-up {
  left: 61.8%;
  top: 21px;
  width: 12.8%;
  transform: rotate(-18deg);
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(255, 196, 124, 0.72), rgba(255, 243, 232, 0.98));
  box-shadow: 0 0 8px rgba(255, 177, 91, 0.16);
}

.track-segment-right-down {
  left: 75.1%;
  top: 41px;
  width: 12.6%;
  transform: rotate(16deg);
  transform-origin: left center;
}

.track-node {
  position: absolute;
  border-radius: 50%;
}

.track-node-small {
  width: 11px;
  height: 11px;
  background:
    radial-gradient(circle at 50% 50%, #ffffff 0 38%, #c9f5ff 39% 74%, #7be4ff 75% 100%);
  box-shadow:
    0 0 0 4px rgba(184, 244, 255, 0.08),
    0 0 12px rgba(184, 244, 255, 0.52),
    0 0 22px rgba(98, 198, 255, 0.18);
}

.track-node-large {
  width: 16px;
  height: 16px;
  background:
    radial-gradient(circle at 50% 50%, #dffbff 0 42%, #a8ebff 43% 76%, #7fe6ff 77% 100%);
  box-shadow:
    0 0 0 6px rgba(184, 244, 255, 0.08),
    0 0 18px rgba(184, 244, 255, 0.44),
    0 0 30px rgba(98, 198, 255, 0.16);
}

.track-node-left-large {
  left: calc(12.2% - 8px);
  top: 40px;
}

.track-node-left-small {
  left: calc(13.3% - 5.5px);
  top: 22px;
}

.track-node-left-peak {
  left: calc(25.6% - 5.5px);
  top: -1px;
}

.track-node-center-left-small {
  left: calc(37.4% - 5.5px);
  top: 22px;
}

.track-node-center-left-large {
  left: calc(37.1% - 8px);
  top: 40px;
}

.track-node-center-right-small {
  left: calc(62.1% - 5.5px);
  top: 22px;
}

.track-node-center-right-large {
  left: calc(62.5% - 8px);
  top: 40px;
}

.track-node-right-peak {
  left: calc(74.9% - 5.5px);
  top: -1px;
}

.track-node-right-small {
  left: calc(87.2% - 5.5px);
  top: 22px;
}

.track-node-right-large {
  left: calc(88% - 8px);
  top: 40px;
}

.track-node-warm,
.track-node-large.track-node-warm,
.track-node-small.track-node-warm {
  background:
    radial-gradient(circle at 50% 50%, #fffdf8 0 34%, #ffd5a0 35% 70%, #ffad58 71% 100%);
  box-shadow:
    0 0 0 4px rgba(255, 173, 88, 0.12),
    0 0 18px rgba(255, 184, 110, 0.76),
    0 0 30px rgba(255, 134, 39, 0.28);
}

.solutions-grid {
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: start;
}

.solution-card {
  position: relative;
  min-height: 640px;
  padding: 34px 26px 22px;
  border: 1px solid rgba(111, 191, 255, 0.7);
  overflow: visible;
  background:
    linear-gradient(180deg, rgba(5, 14, 28, 0.16), rgba(5, 14, 28, 0.22)),
    var(--bg) center/cover no-repeat;
}

.solution-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 20, 36, 0.16) 0%, rgba(8, 20, 36, 0.03) 30%, rgba(5, 14, 28, 0.28) 100%),
    linear-gradient(180deg, rgba(103, 173, 255, 0.1), transparent 24%);
  pointer-events: none;
}

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

.solution-card-warm {
  border-color: rgba(255, 171, 88, 0.66);
}

.solution-index {
  display: block;
  font-size: 48px;
  font-weight: 700;
  text-align: center;
  color: rgba(198, 220, 255, 0.68);
}

.solution-card h3 {
  margin: 12px 0 0;
  font-size: 25px;
  line-height: 1.35;
  text-align: center;
}

.solution-card p {
  margin: 18px auto 0;
  max-width: 14em;
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
  color: rgba(255, 255, 255, 0.88);
}

.solution-icon {
  width: 108px;
  margin: 186px auto 0;
}

.ecosystem-board {
  position: relative;
  margin-top: 46px;
  min-height: 360px;
  display: grid;
  grid-template-columns: minmax(130px, 1fr) minmax(130px, 1fr) 290px minmax(130px, 1fr) minmax(130px, 1fr);
  column-gap: 22px;
  align-items: start;
}

.eco-rail {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 30px;
  height: 32px;
}

.eco-rail-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 15px;
  height: 1px;
  background: rgba(184, 206, 234, 0.52);
}

.eco-rail-dot {
  position: absolute;
  top: 10px;
  width: 10px;
  height: 10px;
  margin-left: -5px;
  border-radius: 50%;
  background: #9cb7d5;
}

.eco-rail-dot-1 {
  left: 16%;
}

.eco-rail-dot-2 {
  left: 34%;
}

.eco-rail-dot-3 {
  left: 66%;
}

.eco-rail-dot-4 {
  left: 84%;
}

.eco-card {
  position: relative;
  z-index: 1;
  max-width: none;
  width: 100%;
  height: 100%;
  color: var(--text-dark);
  text-align: center;
  border: solid 1px #eee;
  padding: 24px 0;
}

.eco-card h3 {
  margin: 18px 0 0;
  font-size: 22px;
  line-height: 1.18;
  font-weight: 700;
}

.eco-card p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: #73829a;
}

.eco-card ul {
  list-style: none;
  margin: 16px auto 0;
  padding: 0;
  display: grid;
  gap: 10px;
  color: #4d607d;
  font-size: 14px;
  text-align: left;
  width: max-content;
  max-width: 100%;
}

.eco-card li {
  position: relative;
  padding-left: 22px;
}

.eco-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  border-radius: 50%;
  background: #67a0f7;
}

.eco-card-ad {
  grid-column: 1;
  grid-row: 1;
}

.eco-card-service {
  grid-column: 2;
  grid-row: 1;
}

.eco-card-dev {
  grid-column: 4;
  grid-row: 1;
}

.eco-card-tech {
  grid-column: 5;
  grid-row: 1;
}

.eco-card-ad h3 {
  color: #2d68d6;
}

.eco-card-service h3 {
  color: #29abc4;
}

.eco-card-dev h3 {
  color: #ff8a22;
}

.eco-card-tech h3 {
  color: #2c9fc7;
}

.eco-card-dev li::before {
  background: #ff8a22;
}

.eco-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 8px auto 0;
  border-radius: 50%;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.46), 0 3px 10px rgba(68, 110, 173, 0.12);
}

.eco-badge img {
  object-fit: contain;
}

.eco-badge-blue {
  background: radial-gradient(circle at 35% 30%, #2f8cff, #2a60e7 72%);
}

.eco-badge-cyan {
  background: radial-gradient(circle at 35% 30%, #38d0dc, #1d9cb1 72%);
}

.eco-badge-orange {
  background: radial-gradient(circle at 35% 30%, #ffb23a, #ff7f17 72%);
}

.eco-centerpiece {
  grid-column: 3;
  grid-row: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 286px;
  margin-top: 34px;
}

.eco-center-rings,
.eco-center-rings::before,
.eco-center-rings::after {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(111, 160, 238, 0.24);
}

.eco-center-rings {
  width: 236px;
  height: 236px;
  background: radial-gradient(circle at center, rgba(84, 138, 236, 0.08), rgba(84, 138, 236, 0.015) 44%, transparent 70%);
}

.eco-center-rings::before {
  content: "";
  inset: 30px;
}

.eco-center-rings::after {
  content: "";
  inset: 66px;
}

.eco-center-cross,
.eco-center-cross::before {
  content: "";
  position: absolute;
  background: rgba(111, 160, 238, 0.18);
}

.eco-center-cross {
  width: 1px;
  height: 286px;
}

.eco-center-cross::before {
  left: -143px;
  top: 142px;
  width: 286px;
  height: 1px;
}

.eco-centerpiece img {
  width: 84px;
  height: 84px;
  opacity: 0.92;
  object-fit: cover;
  object-position: left center;
  filter: saturate(0.8);
}

.section-anchor {
  position: relative;
  top: -92px;
}

.footer-section {
  background: linear-gradient(180deg, #070d16 0%, #04080f 100%);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.2fr 1fr;
  gap: 28px;
}

.footer-card {
  min-width: 0;
}

.footer-card h3 {
  margin: 0 0 18px;
  font-size: 22px;
}

.footer-card p,
.footer-card li {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.78);
}

.footer-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-qrcode-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
}

.footer-qrcode {
  width: 138px;
  aspect-ratio: 1;
  border: 10px solid #fff;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.94) 50%, transparent 50%) 0 0/16px 16px,
    linear-gradient(rgba(0, 0, 0, 0.94) 50%, transparent 50%) 0 0/16px 16px,
    radial-gradient(circle at center, rgba(251, 186, 72, 0.95) 0 8px, transparent 9px),
    #fff;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.26);
}

.footer-qrcode-card p {
  margin-top: 14px;
  text-align: center;
}

.about-card a {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 4px;
}

.footer-bottom {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.56);
}

@media (max-width: 1180px) {
  .site-nav {
    gap: 20px;
  }

  .ecosystem-board {
    grid-template-columns: minmax(112px, 1fr) minmax(112px, 1fr) 236px minmax(112px, 1fr) minmax(112px, 1fr);
    column-gap: 14px;
  }

  .eco-card {
    padding-inline: 4px;
  }

  .eco-card h3 {
    font-size: 20px;
  }

  .eco-card p,
  .eco-card ul {
    font-size: 11px;
  }

  .eco-center-rings {
    width: 214px;
    height: 214px;
  }

  .eco-center-cross {
    height: 260px;
  }

  .eco-center-cross::before {
    left: -130px;
    top: 129px;
    width: 260px;
  }

  .eco-centerpiece {
    height: 260px;
    margin-top: 38px;
  }

  .solutions-track {
    margin-inline: 2px;
  }

  .products-grid,
  .solutions-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  :root {
    --container: calc(100vw - 28px);
  }

  .header-inner {
    grid-template-columns: auto auto;
    gap: 16px;
    min-height: 78px;
    position: relative;
  }

  .nav-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .site-nav,
  .hotline {
    display: none;
  }

  body.nav-open .site-nav {
    display: flex;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(2, 6, 13, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 18px;
    gap: 18px;
  }

  body.nav-open .hotline {
    display: block;
    position: absolute;
    right: 18px;
    top: calc(100% + 236px);
  }

  .hero-section,
  .hero-content {
    min-height: 460px;
  }

  .hero-copy {
    padding-top: 0;
  }

  .hero-copy h1 {
    font-size: 34px;
  }

  .hero-copy p {
    font-size: 18px;
  }

  .metrics-grid,
  .products-grid,
  .solutions-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 span {
    white-space: normal;
  }

  .metric-card + .metric-card::before {
    display: none;
  }

  .metric-card {
    min-height: 96px;
  }

  .section-head h2 {
    font-size: 34px;
  }

  .product-card img {
    max-width: 320px;
    margin: 0 auto;
  }

  .solution-card {
    min-height: 500px;
  }

  .solutions-track {
    display: none;
  }

  .solution-icon {
    margin-top: 110px;
  }

  .ecosystem-board {
    min-height: 0;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    row-gap: 28px;
  }

  .eco-rail,
  .eco-centerpiece {
    display: none;
  }

  .eco-card,
  .eco-card-right {
    grid-column: auto;
    grid-row: auto;
    padding: 0;
    text-align: center;
  }

  .eco-card-right li,
  .eco-card li {
    padding-right: 0;
    padding-left: 22px;
    text-align: left;
    max-width: 250px;
    margin: 0 auto;
  }

  .eco-card-right li::before,
  .eco-card li::before {
    left: 0;
    right: auto;
  }

  .eco-card-right .eco-badge,
  .eco-badge {
    margin: 0 auto;
  }

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