:root {
  --ink: #082047;
  --muted: #5f6f86;
  --line: #dbe6f2;
  --blue: #0878d8;
  --cyan: #00a9d8;
  --green: #15a980;
  --amber: #f2a93b;
  --bg: #f7fbff;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(8, 32, 71, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: var(--bg);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 64px);
  border-bottom: 1px solid rgba(219, 230, 242, 0.82);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 32px);
  color: #44566f;
  font-size: 15px;
}

.nav a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--blue);
  border-color: var(--blue);
}

.section-shell {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr);
  gap: clamp(34px, 6vw, 86px);
  align-items: center;
  min-height: calc(100vh - 75px);
  padding: clamp(54px, 8vw, 98px) 0 clamp(38px, 5vw, 72px);
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(38px, 5.2vw, 66px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-text {
  max-width: 660px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.2;
}

.button.primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(8, 120, 216, 0.22);
}

.button.secondary {
  color: var(--ink);
  border: 1px solid var(--line);
  background: var(--white);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 650px;
  margin: 42px 0 0;
  padding: 0;
}

.hero-stats div {
  min-width: 0;
  padding-left: 16px;
  border-left: 3px solid rgba(0, 169, 216, 0.36);
}

.hero-stats dt {
  margin: 0;
  font-size: clamp(23px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.2;
}

.hero-stats dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding: 22px;
  border: 1px solid rgba(219, 230, 242, 0.92);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(232, 248, 255, 0.9)),
    var(--white);
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -18px -18px auto auto;
  width: 112px;
  height: 112px;
  border: 22px solid rgba(21, 169, 128, 0.16);
  border-radius: 999px;
  pointer-events: none;
}

.visual-topbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.visual-topbar span {
  width: 38px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--green));
}

.visual-topbar strong {
  font-size: 18px;
}

.visual-topbar em {
  padding: 3px 9px;
  border-radius: 999px;
  color: #087358;
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
  background: rgba(21, 169, 128, 0.14);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.metric-strip div {
  min-width: 0;
  padding: 15px;
  border: 1px solid rgba(219, 230, 242, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
}

.metric-strip span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.metric-strip strong {
  display: block;
  margin-top: 5px;
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1.15;
}

.visual-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 14px;
  margin-top: 14px;
}

.device-map,
.trend-panel {
  min-height: 220px;
  border: 1px solid rgba(219, 230, 242, 0.9);
  border-radius: 8px;
  background: var(--white);
}

.device-map {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(rgba(8, 120, 216, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 120, 216, 0.08) 1px, transparent 1px),
    #ffffff;
  background-size: 30px 30px;
}

.device-map::before {
  content: "";
  position: absolute;
  inset: 46px 26px 54px;
  border: 2px solid rgba(8, 120, 216, 0.22);
  border-radius: 58% 42% 48% 52%;
}

.device-map p {
  position: absolute;
  left: 18px;
  bottom: 12px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.pin {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 3px solid var(--white);
  border-radius: 999px;
  background: var(--blue);
  box-shadow: 0 0 0 8px rgba(8, 120, 216, 0.14);
}

.pin-a {
  top: 42px;
  left: 34%;
}

.pin-b {
  top: 112px;
  left: 58%;
  background: var(--green);
  box-shadow: 0 0 0 8px rgba(21, 169, 128, 0.14);
}

.pin-c {
  top: 148px;
  left: 28%;
  background: var(--amber);
  box-shadow: 0 0 0 8px rgba(242, 169, 59, 0.18);
}

.pin-d {
  top: 74px;
  left: 72%;
}

.trend-panel {
  display: flex;
  align-items: end;
  gap: 12px;
  padding: 22px;
}

.trend-panel span {
  flex: 1;
  min-width: 10px;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
}

.trend-panel span:nth-child(2n) {
  background: linear-gradient(180deg, var(--green), #0f8b76);
}

.trend-panel span:nth-child(3n) {
  background: linear-gradient(180deg, var(--amber), #db7d24);
}

.alert-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(242, 169, 59, 0.32);
  border-radius: 8px;
  background: rgba(255, 249, 235, 0.92);
}

.alert-row span {
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--amber);
  box-shadow: 0 0 0 6px rgba(242, 169, 59, 0.17);
}

.alert-row p {
  margin: 0;
  color: #76511b;
  font-size: 14px;
  font-weight: 700;
}

.logo-band {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 4vw, 48px);
  padding: 34px 18px;
  color: var(--white);
  background: linear-gradient(90deg, #07265a, #0878d8 56%, #15a980);
}

.logo-band img {
  width: clamp(86px, 12vw, 132px);
  height: clamp(86px, 12vw, 132px);
  object-fit: contain;
  padding: 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
}

.logo-band p {
  margin: 0 0 4px;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 700;
}

.logo-band strong {
  display: block;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.25;
}

.capability,
.architecture {
  padding: clamp(70px, 8vw, 110px) 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.compact {
  margin-bottom: 26px;
}

.section-heading h2,
.service-layout h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.service-layout p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.scene-list article {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.feature-card {
  padding: 24px;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  color: var(--white);
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.feature-card h3,
.scene-list h3 {
  margin: 18px 0 8px;
  font-size: 21px;
  line-height: 1.25;
}

.feature-card p,
.scene-list p {
  margin: 0;
  color: var(--muted);
}

.scene-section {
  padding: clamp(68px, 8vw, 104px) 0;
  background: #eef7fb;
}

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

.scene-list article {
  padding: 24px;
  border-top: 4px solid var(--cyan);
}

.scene-list article:nth-child(2) {
  border-top-color: var(--green);
}

.scene-list article:nth-child(3) {
  border-top-color: var(--amber);
}

.scene-list article:nth-child(4) {
  border-top-color: var(--blue);
}

.architecture-flow {
  display: grid;
  grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1fr;
  align-items: stretch;
  gap: 10px;
}

.architecture-flow div {
  min-width: 0;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.architecture-flow span {
  display: block;
  color: var(--blue);
  font-size: 14px;
  font-weight: 800;
}

.architecture-flow strong {
  display: block;
  margin-top: 8px;
  font-size: 18px;
  line-height: 1.35;
}

.architecture-flow i {
  position: relative;
  display: block;
  min-height: 80px;
}

.architecture-flow i::before,
.architecture-flow i::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.architecture-flow i::before {
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(8, 120, 216, 0.28);
}

.architecture-flow i::after {
  right: 0;
  width: 9px;
  height: 9px;
  border-top: 2px solid rgba(8, 120, 216, 0.58);
  border-right: 2px solid rgba(8, 120, 216, 0.58);
  transform: translateY(-50%) rotate(45deg);
}

.service-section {
  padding: clamp(68px, 8vw, 102px) 0;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(7, 38, 90, 0.98), rgba(5, 86, 130, 0.94)),
    #07265a;
}

.service-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(280px, 0.72fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.service-layout .eyebrow,
.service-layout p {
  color: rgba(255, 255, 255, 0.78);
}

.service-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-list li {
  padding: 15px 18px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.08);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(18px, 4vw, 64px);
  border-top: 1px solid var(--line);
  background: var(--white);
}

.footer-brand img {
  width: 38px;
  height: 38px;
}

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

.site-footer p {
  margin: 0;
  color: var(--muted);
  text-align: right;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-visual {
    order: -1;
  }

  .feature-grid,
  .scene-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .architecture-flow {
    grid-template-columns: 1fr;
  }

  .architecture-flow i {
    min-height: 24px;
  }

  .architecture-flow i::before {
    left: 50%;
    right: auto;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
  }

  .architecture-flow i::after {
    top: auto;
    right: 50%;
    bottom: 0;
    transform: translateX(50%) rotate(135deg);
  }

  .service-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
    padding: 14px 18px;
  }

  .brand {
    font-size: 18px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .nav {
    gap: 18px;
    font-size: 14px;
  }

  .section-shell {
    width: min(100% - 28px, 1180px);
  }

  .hero {
    padding-top: 32px;
  }

  h1 {
    font-size: clamp(34px, 12vw, 46px);
  }

  .hero-stats,
  .metric-strip,
  .visual-grid,
  .feature-grid,
  .scene-list {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 14px;
  }

  .hero-visual {
    padding: 16px;
  }

  .device-map,
  .trend-panel {
    min-height: 180px;
  }

  .logo-band {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .site-footer p {
    text-align: left;
  }
}