:root {
  color-scheme: dark;
  --ink: #f6fbff;
  --muted: #a9b7c8;
  --muted-strong: #d4dfec;
  --panel: rgba(8, 18, 30, 0.74);
  --panel-solid: #0d1724;
  --line: rgba(255, 255, 255, 0.14);
  --cyan: #35d6ff;
  --blue: #3e7bff;
  --lime: #66e6a6;
  --amber: #ffb84a;
  --red: #ff6f7d;
  --paper: #f5f8fc;
  --paper-ink: #10213a;
  --paper-muted: #58677b;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 86px;
}

body {
  margin: 0;
  min-width: 320px;
  background: #08111d;
  color: var(--ink);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0;
}

body::selection {
  background: rgba(53, 214, 255, 0.34);
}

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

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

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  height: 76px;
  padding: 0 42px;
  background: rgba(5, 11, 19, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
  transition: background 0.2s ease, height 0.2s ease;
}

.site-header.is-scrolled {
  height: 66px;
  background: rgba(5, 11, 19, 0.88);
}

.brand {
  width: 156px;
}

.brand img {
  width: 100%;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 26px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  position: relative;
  padding: 28px 0 24px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.18s ease;
}

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

.header-cta,
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
  white-space: nowrap;
}

.header-cta {
  color: #0c1e34;
  background: #ffffff;
  box-shadow: 0 12px 30px rgba(27, 112, 255, 0.24);
}

.primary-action {
  color: #06111f;
  background: linear-gradient(135deg, var(--cyan), var(--lime));
  box-shadow: 0 18px 38px rgba(53, 214, 255, 0.28);
}

.secondary-action {
  color: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.08);
}

.secondary-action.light {
  color: var(--paper-ink);
  border-color: rgba(16, 33, 58, 0.18);
  background: #ffffff;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: #fff;
}

.hero {
  position: relative;
  height: calc(100vh - 70px);
  min-height: 640px;
  max-height: 680px;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 94px 42px 80px;
}

.hero-bg,
.hero-canvas,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.08);
}

.hero-canvas {
  z-index: 1;
  width: 100%;
  height: 100%;
}

.hero-shade {
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(3, 9, 16, 0.94) 0%, rgba(4, 12, 22, 0.72) 42%, rgba(5, 14, 24, 0.26) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.54) 0%, rgba(6, 12, 20, 0.18) 45%, #08111d 100%);
}

.hero-inner {
  position: relative;
  z-index: 4;
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 64px;
  align-items: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0;
}

.hero h1 {
  margin: 0;
  max-width: 790px;
  font-size: 54px;
  line-height: 1.05;
  font-weight: 950;
  text-wrap: balance;
}

.hero-lede {
  max-width: 690px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 19px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.threat-panel {
  position: relative;
  min-height: 390px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(10, 24, 38, 0.78), rgba(9, 18, 30, 0.52)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 34px);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(14px);
}

.threat-panel::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(53, 214, 255, 0.16);
  pointer-events: none;
}

.panel-top,
.signal-list div,
.hero-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-top {
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
}

.panel-top strong {
  color: var(--lime);
  font-size: 28px;
}

.panel-subline {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  color: rgba(212, 223, 236, 0.68);
  font-size: 12px;
  font-weight: 800;
}

.radar {
  position: relative;
  width: 178px;
  height: 178px;
  margin: 14px auto 16px;
  border-radius: 50%;
  border: 1px solid rgba(53, 214, 255, 0.34);
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(53, 214, 255, 0.18) 50%, transparent calc(50% + 1px)),
    linear-gradient(0deg, transparent calc(50% - 1px), rgba(53, 214, 255, 0.18) 50%, transparent calc(50% + 1px)),
    radial-gradient(circle at center, rgba(53, 214, 255, 0.22) 0 3px, transparent 4px),
    repeating-radial-gradient(circle, transparent 0 35px, rgba(53, 214, 255, 0.2) 36px 37px),
    radial-gradient(circle at 50% 50%, rgba(53, 214, 255, 0.12), rgba(53, 214, 255, 0.02) 62%, transparent 63%);
  overflow: hidden;
  box-shadow:
    inset 0 0 36px rgba(53, 214, 255, 0.14),
    0 0 36px rgba(53, 214, 255, 0.08);
}

.radar::before {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  background: conic-gradient(
    from 16deg,
    rgba(102, 230, 166, 0.2),
    rgba(53, 214, 255, 0.06) 25%,
    rgba(255, 184, 74, 0.16) 42%,
    rgba(53, 214, 255, 0.03) 70%,
    rgba(102, 230, 166, 0.2)
  );
  clip-path: polygon(50% 12%, 72% 28%, 82% 60%, 59% 78%, 31% 67%, 18% 39%);
}

.radar-sweep {
  position: absolute;
  inset: 50% 0 auto 50%;
  width: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  transform-origin: left center;
  animation: sweep 4s linear infinite;
}

.radar-label {
  position: absolute;
  z-index: 2;
  color: rgba(212, 223, 236, 0.8);
  font-size: 11px;
  font-style: normal;
  font-weight: 900;
}

.label-cloud {
  left: 72px;
  top: 15px;
}

.label-vehicle {
  right: 15px;
  top: 80px;
}

.label-gateway {
  left: 72px;
  bottom: 15px;
}

.label-supply {
  left: 14px;
  top: 80px;
}

.ping {
  position: absolute;
  z-index: 3;
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 22px var(--amber);
}

.ping::after {
  content: "";
  position: absolute;
  inset: -7px;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.28;
  animation: pulse 2.6s ease-out infinite;
}

.ping-alert {
  left: 62%;
  top: 34%;
  color: var(--amber);
}

.ping-safe {
  left: 34%;
  top: 62%;
  color: var(--lime);
  background: var(--lime);
  box-shadow: 0 0 22px var(--lime);
}

@keyframes sweep {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  to {
    transform: scale(1.8);
    opacity: 0;
  }
}

.signal-list {
  display: grid;
  gap: 8px;
}

.signal-list div {
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.signal-list span {
  color: var(--muted);
  font-size: 13px;
}

.signal-list strong {
  font-size: 18px;
}

.hero-metrics {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 16px;
  width: min(1180px, calc(100% - 84px));
  transform: translateX(-50%);
  gap: 14px;
}

.hero-metrics span {
  flex: 1;
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(8, 18, 30, 0.58);
  backdrop-filter: blur(12px);
  font-weight: 800;
  text-align: center;
}

.section {
  padding: 104px 42px;
}

.section-head {
  width: min(1120px, 100%);
  margin: 0 auto 46px;
}

.section-head h2,
.support-copy h2,
.contact h2 {
  margin: 0;
  color: var(--paper-ink);
  font-size: 42px;
  line-height: 1.18;
}

.section-head p,
.support-copy p,
.contact p {
  margin: 16px 0 0;
  max-width: 720px;
  color: var(--paper-muted);
  font-size: 17px;
  line-height: 1.75;
}

.split {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
}

.industry,
.lifecycle,
.standards {
  background: var(--paper);
  color: var(--paper-ink);
}

.industry {
  padding-top: 54px;
}

.industry-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.insight {
  min-height: 190px;
  padding: 28px;
  border: 1px solid rgba(13, 32, 56, 0.08);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 20px 60px rgba(17, 38, 66, 0.08);
}

.insight h3,
.product-card h3,
.timeline-step h3,
.support-list h3,
.standard-grid h3,
.contact-card h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
}

.insight p,
.product-card p,
.timeline-step p,
.support-list p,
.standard-grid p,
.contact-card p {
  margin: 12px 0 0;
  color: var(--paper-muted);
  line-height: 1.7;
}

.mark {
  display: block;
  width: 34px;
  height: 5px;
  margin-bottom: 22px;
  border-radius: 999px;
}

.mark-blue {
  background: var(--blue);
}

.mark-green {
  background: var(--lime);
}

.mark-amber {
  background: var(--amber);
}

.industry-media {
  grid-column: 2;
  grid-row: 1 / span 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: minmax(150px, 1fr);
  gap: 18px;
  align-content: stretch;
}

.industry-media img {
  width: 100%;
  height: 100%;
  min-height: 180px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(17, 38, 66, 0.18);
}

.industry-media img:first-child {
  grid-row: span 2;
}

.dark-band {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, #07111d 0%, #101a2a 100%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 74px);
}

.dark-band .section-head h2,
.dark-band .section-head p {
  color: var(--ink);
}

.dark-band .section-head p {
  color: var(--muted);
}

.mini-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mini-proof span {
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: var(--muted-strong);
  background: rgba(255, 255, 255, 0.06);
  font-weight: 800;
}

.product-grid,
.standard-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card {
  position: relative;
  min-height: 242px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    rgba(10, 24, 38, 0.78);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.18);
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--accent);
}

.product-card h3 {
  color: var(--ink);
  margin-top: 24px;
  font-size: 20px;
}

.product-card p {
  color: var(--muted);
  font-size: 15px;
}

.product-icon {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: #07111d;
  background: var(--accent);
  font-weight: 950;
  font-size: 22px;
}

.accent-cyan {
  --accent: var(--cyan);
}

.accent-lime {
  --accent: var(--lime);
}

.accent-amber {
  --accent: var(--amber);
}

.accent-blue {
  --accent: var(--blue);
}

.timeline {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: rgba(16, 33, 58, 0.12);
  border: 1px solid rgba(16, 33, 58, 0.12);
  border-radius: 8px;
  overflow: hidden;
}

.timeline-step {
  min-height: 220px;
  padding: 26px;
  background: #fff;
}

.timeline-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 42px;
  border-radius: 50%;
  color: #07111d;
  background: var(--cyan);
  font-weight: 950;
}

.support {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 58px;
  align-items: center;
  background: #ffffff;
  color: var(--paper-ink);
}

.support-visual,
.support-copy {
  width: min(100%, 560px);
}

.support-visual {
  justify-self: end;
}

.support-visual img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(17, 38, 66, 0.18);
}

.privacy-line {
  padding: 16px 18px;
  border-left: 4px solid var(--lime);
  background: #eef8f3;
}

.support-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.support-list article {
  padding: 22px 24px;
  border: 1px solid rgba(13, 32, 56, 0.08);
  border-radius: 8px;
  background: #f8fbff;
}

.standard-grid {
  grid-template-columns: repeat(3, 1fr);
}

.standard-grid article {
  min-height: 244px;
  padding: 28px;
  border: 1px solid rgba(13, 32, 56, 0.1);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 20px 60px rgba(17, 38, 66, 0.08);
}

.standard-grid strong {
  color: var(--blue);
  font-size: 14px;
}

.standard-grid h3 {
  margin-top: 18px;
}

.contact {
  position: relative;
  padding: 100px 42px;
  overflow: hidden;
  background: #08111d;
}

.contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 17, 29, 0.96), rgba(8, 17, 29, 0.62)),
    url("./assets/banderrs.e4a68811.jpg") center / cover;
  opacity: 0.9;
}

.contact-inner {
  position: relative;
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 42px;
  align-items: center;
}

.contact h2,
.contact p {
  color: var(--ink);
}

.contact p {
  color: var(--muted-strong);
}

.contact-card {
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.contact-card a {
  display: block;
  margin-top: 14px;
  color: var(--cyan);
  font-size: 19px;
  font-weight: 900;
}

.contact-card p {
  color: rgba(255, 255, 255, 0.76);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  min-height: 92px;
  padding: 24px 42px;
  color: rgba(255, 255, 255, 0.68);
  background: #050b13;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}

.site-footer img {
  width: 132px;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 1060px) {
  .site-header {
    padding: 0 24px;
    gap: 16px;
  }

  .site-nav {
    gap: 20px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .threat-panel {
    max-width: 420px;
  }

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

  .timeline {
    grid-template-columns: 1fr;
  }

  .support {
    grid-template-columns: 1fr;
  }

  .support-visual,
  .support-copy {
    justify-self: center;
    width: min(100%, 900px);
  }
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .brand {
    width: 142px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 66px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(5, 11, 19, 0.96);
  }

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

  .site-nav a {
    padding: 14px 12px;
  }

  .site-nav a::after {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .hero {
    height: auto;
    max-height: none;
    min-height: auto;
    padding: 104px 22px 30px;
  }

  .hero h1 {
    font-size: 38px;
    line-height: 1.08;
  }

  .hero-lede {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .threat-panel {
    display: none;
  }

  .hero-metrics {
    position: relative;
    left: auto;
    bottom: auto;
    width: 100%;
    margin: 26px auto 0;
    transform: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .hero-metrics span {
    min-height: 50px;
    font-size: 13px;
  }

  .section,
  .contact {
    padding: 74px 22px;
  }

  .industry {
    padding-top: 24px;
  }

  .section-head h2,
  .support-copy h2,
  .contact h2 {
    font-size: 32px;
  }

  .split {
    display: block;
  }

  .mini-proof,
  .secondary-action.light {
    margin-top: 18px;
  }

  .industry-grid,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .industry-media {
    grid-column: auto;
    grid-row: auto;
  }

  .product-grid,
  .standard-grid {
    grid-template-columns: 1fr;
  }

  .product-card,
  .standard-grid article,
  .insight {
    min-height: auto;
  }

  .site-footer {
    justify-content: flex-start;
    padding: 24px 22px;
  }
}

@media (max-width: 520px) {
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .industry-media {
    grid-template-columns: 1fr;
  }

  .industry-media img {
    min-height: 150px;
  }
}