:root {
  --bg: #030712;
  --bg-soft: #071426;
  --panel: rgba(7, 18, 35, 0.74);
  --panel-border: rgba(111, 214, 255, 0.18);
  --text: #eff7ff;
  --muted: #91a5ba;
  --cyan: #71f0ff;
  --blue: #2f8cff;
  --violet: #6d63ff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 16% 18%, rgba(47, 140, 255, 0.16), transparent 20%),
    radial-gradient(circle at 82% 14%, rgba(113, 240, 255, 0.14), transparent 18%),
    radial-gradient(circle at 78% 78%, rgba(109, 99, 255, 0.16), transparent 22%),
    linear-gradient(180deg, #02050c 0%, #07111e 38%, #02060d 100%);
  overflow-x: hidden;
}

.cosmos {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.cosmos__grid,
.cosmos__scan {
  position: absolute;
  inset: 0;
}

.cosmos__grid {
  background-image:
    linear-gradient(rgba(113, 240, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(113, 240, 255, 0.07) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(circle at center, #000 46%, transparent 100%);
  opacity: 0.5;
}

.cosmos__scan {
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(113, 240, 255, 0.035) 46%,
    rgba(113, 240, 255, 0.075) 50%,
    rgba(113, 240, 255, 0.035) 54%,
    transparent 100%
  );
  animation: scan 7s linear infinite;
}

.cosmos__glow,
.cosmos__beam {
  position: absolute;
  border-radius: 999px;
  filter: blur(18px);
}

.cosmos__glow--a {
  width: 380px;
  height: 380px;
  left: -80px;
  top: 70px;
  background: radial-gradient(circle, rgba(47, 140, 255, 0.42), transparent 68%);
  animation: driftA 16s ease-in-out infinite;
}

.cosmos__glow--b {
  width: 340px;
  height: 340px;
  right: -60px;
  bottom: 70px;
  background: radial-gradient(circle, rgba(109, 99, 255, 0.36), transparent 70%);
  animation: driftB 18s ease-in-out infinite;
}

.cosmos__beam {
  width: 56vw;
  height: 120px;
  left: 22%;
  top: 20%;
  transform: rotate(-12deg);
  background: linear-gradient(90deg, transparent, rgba(113, 240, 255, 0.14), transparent);
  animation: beam 9s ease-in-out infinite;
}

.cosmos__particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(113, 240, 255, 0.8);
  box-shadow: 0 0 16px rgba(113, 240, 255, 0.55);
  animation: particle 12s linear infinite;
}

.cosmos__particles span:nth-child(1) {
  left: 10%;
  top: 16%;
  animation-delay: 0s;
}

.cosmos__particles span:nth-child(2) {
  left: 24%;
  top: 66%;
  animation-delay: 2s;
}

.cosmos__particles span:nth-child(3) {
  right: 18%;
  top: 22%;
  animation-delay: 4s;
}

.cosmos__particles span:nth-child(4) {
  right: 28%;
  top: 74%;
  animation-delay: 1s;
}

.cosmos__particles span:nth-child(5) {
  left: 54%;
  top: 10%;
  animation-delay: 6s;
}

.cosmos__particles span:nth-child(6) {
  left: 68%;
  top: 54%;
  animation-delay: 3s;
}

.shell {
  position: relative;
  width: min(1240px, calc(100% - 36px));
  margin: 0 auto;
  padding: 22px 0 60px;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  animation: reveal 700ms ease forwards;
}

.reveal-delay-1 {
  animation-delay: 120ms;
}

.reveal-delay-2 {
  animation-delay: 280ms;
}

.reveal-delay-3 {
  animation-delay: 420ms;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark__logo {
  width: 54px;
  height: 54px;
  object-fit: contain;
  filter: drop-shadow(0 12px 24px rgba(74, 200, 255, 0.24));
}

.brand-mark__text strong,
.eyebrow {
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.brand-mark__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-mark__text strong {
  font-size: 12px;
  font-weight: 700;
  color: #b7ddff;
}

.brand-mark__text em {
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  font-weight: 800;
  color: #eff7ff;
}

.topbar__nav {
  display: flex;
  gap: 22px;
}

.topbar__nav a {
  color: #98add0;
  text-decoration: none;
  font-size: 14px;
}

.topbar__nav a:hover {
  color: var(--text);
}

.hero,
.panel,
.cta {
  border: 1px solid var(--panel-border);
  background:
    linear-gradient(180deg, rgba(7, 18, 35, 0.88), rgba(4, 12, 23, 0.74)),
    rgba(7, 18, 35, 0.75);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  gap: 28px;
  padding: 44px;
  border-radius: 34px;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(113, 240, 255, 0.08), transparent 24%),
    linear-gradient(290deg, rgba(109, 99, 255, 0.08), transparent 28%);
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 11px;
  color: #7ae2ff;
}

.hero__copy h1 {
  margin: 0;
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  line-height: 0.94;
  letter-spacing: 0.03em;
}

.hero__lead,
.hero__sub,
.panel p,
.panel li,
.cta p,
.signal-card span,
.signal-card p {
  color: var(--muted);
}

.hero__lead {
  max-width: 760px;
  margin: 22px 0 0;
  font-size: 1.16rem;
  line-height: 1.9;
}

.hero__sub {
  max-width: 720px;
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.9;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 176px;
  padding: 15px 24px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  color: #02111f;
  background: linear-gradient(135deg, #79f6ff 0%, #39c6ff 48%, #5672ff 100%);
  box-shadow: 0 18px 34px rgba(57, 198, 255, 0.28);
}

.btn--secondary {
  color: var(--text);
  border: 1px solid rgba(126, 200, 255, 0.24);
  background: rgba(7, 21, 42, 0.56);
}

.btn--large {
  min-width: 206px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.hero__stats article,
.signal-card {
  border: 1px solid rgba(113, 240, 255, 0.14);
  background: rgba(5, 16, 31, 0.62);
}

.hero__stats article {
  padding: 18px 18px 16px;
  border-radius: 20px;
}

.hero__stats strong {
  display: block;
  margin-bottom: 10px;
  font-size: 0.96rem;
  color: var(--text);
}

.hero__stats span {
  color: #88a3be;
  font-size: 0.92rem;
  line-height: 1.7;
}

.hero__stage {
  position: relative;
  min-height: 520px;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(113, 240, 255, 0.12);
  background:
    radial-gradient(circle at center, rgba(57, 198, 255, 0.08), transparent 46%),
    linear-gradient(180deg, rgba(5, 15, 29, 0.9), rgba(3, 10, 20, 0.96));
}

.radar {
  position: absolute;
  inset: 32px 30px 150px;
  display: grid;
  place-items: center;
}

.radar__ring,
.radar__core,
.radar__pulse {
  position: absolute;
  border-radius: 50%;
}

.radar__ring {
  border: 1px solid rgba(113, 240, 255, 0.14);
}

.radar__ring--1 {
  width: 180px;
  height: 180px;
}

.radar__ring--2 {
  width: 280px;
  height: 280px;
}

.radar__ring--3 {
  width: 390px;
  height: 390px;
}

.radar__pulse {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(113, 240, 255, 0.12), transparent 66%);
  animation: pulse 5.2s ease-in-out infinite;
}

.radar__core {
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, #7ef8ff, #4d7dff);
  box-shadow: 0 0 24px rgba(113, 240, 255, 0.7);
}

.radar__label {
  position: absolute;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(4, 17, 33, 0.8);
  border: 1px solid rgba(113, 240, 255, 0.16);
  color: #d7f3ff;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.radar__label--a {
  top: 76px;
  right: 20px;
}

.radar__label--b {
  bottom: 92px;
  left: 12px;
}

.radar__label--c {
  top: 210px;
  left: 44px;
}

.signal-card {
  position: absolute;
  padding: 18px 20px;
  border-radius: 22px;
  box-shadow: 0 0 40px rgba(57, 198, 255, 0.12);
}

.signal-card strong {
  display: block;
  margin: 10px 0 8px;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.5;
}

.signal-card--primary {
  left: 24px;
  right: 24px;
  bottom: 24px;
}

.signal-card--secondary {
  top: 28px;
  left: 26px;
  width: 220px;
}

.signal-card--secondary ul {
  margin: 10px 0 0;
  padding-left: 18px;
  color: #d7e8fb;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.panel,
.cta {
  border-radius: 28px;
}

.panel {
  padding: 28px;
}

.panel--feature {
  grid-column: span 6;
}

.panel--wide {
  margin-top: 18px;
  padding: 30px;
}

.panel__heading {
  max-width: 760px;
}

.panel h2,
.cta h2 {
  margin: 0 0 12px;
  font-size: 1.9rem;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.solution-grid article {
  padding: 22px 20px;
  border-radius: 22px;
  background: rgba(5, 16, 31, 0.52);
  border: 1px solid rgba(113, 240, 255, 0.12);
}

.solution-grid span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(113, 240, 255, 0.12);
  color: #9de8ff;
  font-size: 0.85rem;
}

.solution-grid h3 {
  margin: 16px 0 10px;
  font-size: 1.08rem;
}

.solution-grid p,
.list li {
  color: var(--muted);
  line-height: 1.8;
}

.panel--capability {
  grid-column: span 6;
}

.list {
  margin: 0;
  padding-left: 18px;
}

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
  padding: 30px;
}

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scan {
  0% {
    transform: translateY(-35%);
  }

  100% {
    transform: translateY(40%);
  }
}

@keyframes driftA {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(42px, 26px, 0);
  }
}

@keyframes driftB {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(-40px, -24px, 0);
  }
}

@keyframes beam {
  0%,
  100% {
    transform: translate3d(-6%, 0, 0) rotate(-12deg);
    opacity: 0.32;
  }

  50% {
    transform: translate3d(10%, 0, 0) rotate(-12deg);
    opacity: 0.58;
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(0.92);
    opacity: 0.5;
  }

  50% {
    transform: scale(1.04);
    opacity: 0.86;
  }
}

@keyframes particle {
  0% {
    transform: translate3d(0, 0, 0) scale(0.8);
    opacity: 0;
  }

  15%,
  85% {
    opacity: 1;
  }

  100% {
    transform: translate3d(24px, -80px, 0) scale(1.18);
    opacity: 0;
  }
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .shell {
    width: min(100% - 18px, 1240px);
    padding: 16px 0 36px;
  }

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

  .topbar__nav {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .hero,
  .panel,
  .cta {
    border-radius: 22px;
  }

  .hero {
    padding: 24px;
  }

  .hero__stats,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  .hero__stage {
    min-height: 440px;
  }

  .radar__ring--3,
  .radar__pulse {
    width: 300px;
    height: 300px;
  }

  .panel--feature,
  .panel--capability {
    grid-column: span 12;
  }

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

  .btn {
    width: 100%;
  }
}