:root {
  --bg: #061b28;
  --panel: #0d2c3e;
  --panel-2: #12384d;
  --text: #eef8ff;
  --muted: #9fc4d5;
  --cyan: #27d7ff;
  --green: #45e6a1;
  --line: rgba(255,255,255,.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 12%, rgba(39,215,255,.16), transparent 28%),
    radial-gradient(circle at 78% 18%, rgba(69,230,161,.12), transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
a { color: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 34px;
  background: rgba(6,27,40,.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(39,215,255,.45);
  border-radius: 12px;
  color: var(--cyan);
  font-weight: 900;
  background: rgba(39,215,255,.08);
}
.brand strong,
.brand small { display: block; }
.brand small { color: var(--muted); margin-top: 3px; }
.nav { display: flex; gap: 22px; color: var(--muted); }
.nav a, .hotline { text-decoration: none; }
.hotline { color: var(--green); font-weight: 900; }

.hero {
  min-height: calc(100vh - 75px);
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 42px;
  align-items: center;
  padding: 72px 7vw;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 820px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.06;
  margin-bottom: 22px;
}
.lead {
  max-width: 760px;
  color: #c8dce6;
  font-size: 18px;
  line-height: 1.9;
}
.actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 900;
}
.primary { background: linear-gradient(135deg, var(--cyan), var(--green)); color: #06202d; }
.ghost { border: 1px solid var(--line); color: var(--text); }

.console {
  border: 1px solid rgba(39,215,255,.28);
  border-radius: 18px;
  padding: 18px;
  background: linear-gradient(180deg, rgba(18,56,77,.92), rgba(6,27,40,.88));
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
.console-head {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}
.console-head span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
}
.console-head strong { margin-left: auto; }
.scale-lane {
  position: relative;
  height: 210px;
  margin: 26px 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(90deg, transparent 0 48%, rgba(39,215,255,.18) 48% 52%, transparent 52%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 2px, transparent 2px 34px);
  overflow: hidden;
}
.truck {
  position: absolute;
  left: 18%;
  top: 82px;
  width: 190px;
  height: 58px;
  border-radius: 10px 26px 10px 10px;
  background: #d9f8ff;
  animation: truckMove 5s ease-in-out infinite;
}
.truck::before {
  content: "";
  position: absolute;
  right: -36px;
  top: 16px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #9defff;
}
.truck span {
  position: absolute;
  bottom: -15px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #061b28;
  border: 6px solid #7ecfe4;
}
.truck span:first-child { left: 28px; }
.truck span:last-child { right: 12px; }
.plate {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  padding: 8px 12px;
  border-radius: 6px;
  background: rgba(39,215,255,.16);
  color: var(--cyan);
}
.gate {
  position: absolute;
  top: 34px;
  width: 6px;
  height: 130px;
  background: var(--green);
}
.gate.left { left: 34px; }
.gate.right { right: 34px; }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.metric-grid div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,.05);
}
.metric-grid small { display: block; color: var(--muted); margin-bottom: 8px; }
.metric-grid b { color: var(--green); font-size: 22px; }
.signal-bars { display: flex; gap: 8px; height: 38px; align-items: end; margin-top: 18px; }
.signal-bars i {
  flex: 1;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(var(--cyan), var(--green));
  animation: pulseBar 1.8s ease-in-out infinite;
}
.signal-bars i:nth-child(2) { animation-delay: .15s; }
.signal-bars i:nth-child(3) { animation-delay: .3s; }
.signal-bars i:nth-child(4) { animation-delay: .45s; }
.signal-bars i:nth-child(5) { animation-delay: .6s; }

.strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 0 7vw 70px;
}
.strip article,
.module-grid article,
.flow-line div,
.contact {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.055);
  padding: 24px;
}
.strip b { color: var(--cyan); }
.strip p,
.module-grid p,
.flow-line p,
.contact p,
footer { color: var(--muted); line-height: 1.75; }

.flow-section,
.modules,
.scenes,
.contact {
  margin: 0 7vw 76px;
}
.section-head h2 { font-size: clamp(28px, 4vw, 48px); }
.flow-line {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.flow-line span {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--green);
  font-weight: 900;
}
.module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.scenes {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 28px;
  align-items: center;
}
.scenes ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.scenes li {
  padding: 18px;
  border-radius: 12px;
  background: rgba(39,215,255,.09);
  border: 1px solid rgba(39,215,255,.18);
  text-align: center;
  font-weight: 800;
}
.contact {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}
footer { text-align: center; padding: 0 24px 42px; }

@keyframes truckMove {
  0%, 100% { transform: translateX(-18px); }
  50% { transform: translateX(72px); }
}
@keyframes pulseBar {
  0%, 100% { height: 32%; opacity: .55; }
  50% { height: 100%; opacity: 1; }
}

@media (max-width: 980px) {
  .topbar { flex-wrap: wrap; padding: 14px 20px; }
  .nav { order: 3; width: 100%; overflow-x: auto; }
  .hero,
  .strip,
  .flow-line,
  .module-grid,
  .scenes,
  .metric-grid {
    grid-template-columns: 1fr;
  }
  .hero { padding: 44px 20px; }
  .contact { flex-direction: column; align-items: flex-start; }
}