:root {
  color-scheme: dark;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: #030712;
  color: #f8fbff;
  --wall-width: 14880px;
  --wall-height: 3510px;
  --scale: 1;
  --offset-x: 0px;
  --offset-y: 0px;
}

* {
  box-sizing: border-box;
}

html,
body,
.viewport {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  background: #030712;
}

.viewport {
  position: fixed;
  inset: 0;
  background: #030712;
}

.wall {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--wall-width);
  height: var(--wall-height);
  overflow: hidden;
  transform-origin: 0 0;
  transform: translate(var(--offset-x), var(--offset-y)) scale(var(--scale));
  background:
    radial-gradient(circle at 50% 40%, rgba(20, 184, 166, 0.28), transparent 36%),
    radial-gradient(circle at 82% 22%, rgba(249, 115, 22, 0.18), transparent 24%),
    linear-gradient(135deg, #061528 0%, #0b1220 48%, #071018 100%);
}

.motion-canvas,
.grid-layer {
  position: absolute;
  inset: 0;
}

.grid-layer {
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 2px, transparent 2px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 2px, transparent 2px);
  background-size: 240px 240px;
  opacity: 0.74;
}

.screen-header {
  position: absolute;
  z-index: 4;
  left: 360px;
  right: 360px;
  top: 180px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 120px;
}

h1,
h2,
p {
  margin: 0;
  letter-spacing: 0;
}

.eyebrow {
  margin-bottom: 38px;
  color: #5eead4;
  font-size: 58px;
  line-height: 1;
  text-transform: uppercase;
}

h1 {
  font-size: 178px;
  line-height: 1;
  font-weight: 820;
  color: #ffffff;
  text-shadow: 0 0 36px rgba(20, 184, 166, 0.46);
}

.header-metrics {
  display: grid;
  justify-items: end;
  gap: 26px;
}

.header-metrics strong {
  font-size: 112px;
  line-height: 1;
}

.header-metrics span {
  color: #cbd5e1;
  font-size: 52px;
}

.scene {
  position: absolute;
  z-index: 3;
  inset: 620px 360px 250px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(54px);
  transition: opacity 260ms linear, transform 260ms linear;
}

.scene.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.hero-copy {
  max-width: 6200px;
}

.hero-copy h2 {
  font-size: 158px;
  line-height: 1.05;
  font-weight: 820;
}

.hero-copy p {
  margin-top: 44px;
  color: #dbeafe;
  font-size: 66px;
  line-height: 1.34;
}

.card-grid {
  margin-top: 150px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 72px;
}

.metric-card,
.side-stats article,
.camera-card {
  border: 4px solid rgba(94, 234, 212, 0.32);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.76);
  box-shadow: inset 0 0 60px rgba(20, 184, 166, 0.10), 0 0 42px rgba(20, 184, 166, 0.12);
}

.metric-card {
  min-height: 520px;
  padding: 74px;
}

.metric-card span,
.side-stats span {
  display: block;
  color: #a7f3d0;
  font-size: 58px;
}

.metric-card strong,
.side-stats strong {
  display: block;
  margin-top: 48px;
  color: #ffffff;
  font-size: 136px;
  line-height: 1;
}

.timeline-bars {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 960px;
  display: grid;
  grid-template-columns: repeat(32, 1fr);
  align-items: end;
  gap: 24px;
}

.timeline-bars i {
  min-height: 120px;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, #14b8a6, #f97316);
  transform-origin: bottom;
}

.flow-map {
  position: absolute;
  left: 0;
  top: 790px;
  width: 8600px;
  height: 1760px;
}

.flow-line {
  position: absolute;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(90deg, #14b8a6, #facc15, #f97316);
  box-shadow: 0 0 90px rgba(20, 184, 166, 0.46);
}

.line-a {
  left: 1100px;
  top: 690px;
  width: 5200px;
  transform: rotate(7deg);
}

.line-b {
  left: 2300px;
  top: 1050px;
  width: 4200px;
  transform: rotate(-10deg);
}

.flow-node {
  position: absolute;
  width: 980px;
  height: 420px;
  display: grid;
  place-items: center;
  border: 5px solid rgba(94, 234, 212, 0.62);
  border-radius: 8px;
  background: rgba(8, 20, 28, 0.92);
  font-size: 80px;
  font-weight: 780;
}

.node-a { left: 220px; top: 520px; }
.node-b { left: 3600px; top: 220px; }
.node-c { left: 7020px; top: 900px; }

.side-stats {
  position: absolute;
  right: 0;
  top: 690px;
  width: 4700px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px;
}

.side-stats article {
  min-height: 620px;
  padding: 78px;
}

.camera-grid {
  position: absolute;
  left: 0;
  top: 760px;
  width: 9200px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 52px;
}

.camera-card {
  height: 700px;
  padding: 58px;
  display: grid;
  align-content: space-between;
  background:
    linear-gradient(135deg, rgba(20,184,166,0.22), rgba(249,115,22,0.14)),
    rgba(15,23,42,0.78);
}

.camera-card strong {
  font-size: 78px;
}

.camera-card span {
  color: #dbeafe;
  font-size: 52px;
}

.alert-rail {
  position: absolute;
  right: 0;
  top: 740px;
  width: 4300px;
  display: grid;
  gap: 44px;
}

.alert-card {
  padding: 58px 68px;
  border-left: 20px solid #f97316;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.78);
  font-size: 64px;
}

.hud {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 10;
  max-width: min(980px, calc(100vw - 24px));
  padding: 9px 11px;
  border-radius: 6px;
  background: rgba(0,0,0,0.72);
  color: rgba(255,255,255,0.82);
  font-size: 12px;
  pointer-events: none;
}

.preview-note {
  color: #facc15;
}

.pulse {
  animation: flash 520ms ease;
}

@keyframes flash {
  0% { outline: 18px solid rgba(94, 234, 212, 0.55); }
  100% { outline: 0 solid rgba(94, 234, 212, 0); }
}