:root {
  --bg: #07111f;
  --bg-soft: #0d1d33;
  --panel: rgba(11, 28, 49, 0.78);
  --panel-strong: rgba(15, 38, 67, 0.92);
  --line: rgba(134, 187, 255, 0.14);
  --text: #edf5ff;
  --muted: #8fa7c5;
  --accent: #4fd2ff;
  --accent-2: #7fffaa;
  --accent-3: #0d6efd;
  --shadow: 0 24px 80px rgba(1, 12, 26, 0.45);
  --radius: 28px;
  --radius-sm: 18px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 10% 10%, rgba(79, 210, 255, 0.14), transparent 28%),
    radial-gradient(circle at 85% 18%, rgba(127, 255, 170, 0.1), transparent 24%),
    radial-gradient(circle at 80% 80%, rgba(13, 110, 253, 0.16), transparent 26%),
    linear-gradient(180deg, #06101d 0%, #08162a 42%, #050c17 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.82), transparent 92%);
  pointer-events: none;
}

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

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

.site-shell {
  position: relative;
  overflow: hidden;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  width: min(calc(100% - 32px), var(--max));
  margin: 18px auto 0;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(4, 13, 24, 0.72);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(79, 210, 255, 0.16);
}

.brand strong,
.brand span {
  display: block;
}

.brand strong {
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.brand span {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.2s ease, transform 0.2s ease;
}

.nav a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: white;
}

.menu-toggle span + span {
  margin-top: 6px;
}

main {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding-bottom: 80px;
}

.hero {
  min-height: calc(100vh - 110px);
  padding: 88px 0 56px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 42px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.contact-panel h2 {
  margin: 0;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero h1 {
  max-width: 9.4em;
  font-size: clamp(3rem, 8vw, 5.7rem);
}

.lead,
.section-heading p,
.timeline-item p,
.feature-card p,
.solution-panel p,
.contact-panel p,
.data-card p {
  color: var(--muted);
  line-height: 1.75;
}

.lead {
  max-width: 44rem;
  margin: 24px 0 0;
  font-size: 1.06rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.button.primary {
  background: linear-gradient(135deg, var(--accent), #2081ff);
  color: #021224;
  font-weight: 700;
  border-color: transparent;
}

.button.secondary {
  background: rgba(255,255,255,0.04);
}

.hero-points {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #d2e5ff;
}

.hero-points li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 10px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(79, 210, 255, 0.08);
}

.hero-visual {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
}

.hero-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.08);
}

.orbit-one {
  inset: 9% 4% 12% 14%;
}

.orbit-two {
  inset: 0 14% 24% 0;
}

.visual-card {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 39, 66, 0.95), rgba(8, 22, 39, 0.86));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.visual-main {
  z-index: 2;
  width: min(100%, 480px);
  padding: 32px;
}

.visual-main h2 {
  margin: 18px 0 12px;
  font-size: 2rem;
}

.visual-main p,
.visual-float p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(79, 210, 255, 0.12);
  color: #c4f6ff;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.signal-grid div {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255,255,255,0.04);
}

.signal-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.3rem;
}

.signal-grid span {
  color: var(--muted);
  font-size: 0.85rem;
}

.visual-float {
  right: 0;
  bottom: 6%;
  width: min(68%, 280px);
  padding: 24px;
  z-index: 3;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.metrics article,
.feature-card,
.solution-panel,
.data-card,
.shot,
.demo-frame,
.contact-panel,
.timeline-item {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.metrics article {
  padding: 24px;
  border-radius: 24px;
}

.metrics strong {
  display: block;
  font-size: 1.8rem;
}

.metrics span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.65;
}

.section {
  padding: 72px 0 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading h2,
.contact-panel h2 {
  font-size: clamp(2rem, 5vw, 3.6rem);
}

.capability-grid,
.showcase-grid,
.data-cards {
  display: grid;
  gap: 18px;
}

.capability-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  position: relative;
  padding: 28px;
  border-radius: 26px;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: auto -16% -42% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 210, 255, 0.22), transparent 70%);
}

.feature-index {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.12em;
}

.feature-card h3,
.solution-panel h3,
.data-card h3,
.timeline-item h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
}

.workflow .timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 18px;
  padding: 22px;
  border-radius: 24px;
}

.timeline-item span {
  display: grid;
  place-items: center;
  min-height: 88px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(79,210,255,0.2), rgba(127,255,170,0.12));
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 800;
}

.timeline-item p,
.solution-panel ul,
.contact-meta span {
  margin: 0;
}

.solution-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 18px;
}

.solution-panel {
  padding: 28px;
  border-radius: 28px;
}

.solution-panel.highlight {
  background:
    radial-gradient(circle at top right, rgba(79, 210, 255, 0.18), transparent 32%),
    linear-gradient(180deg, rgba(17, 43, 73, 0.94), rgba(8, 20, 35, 0.88));
}

.solution-panel ul {
  padding-left: 18px;
  color: #d4e8ff;
  line-height: 1.8;
}

.showcase-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.shot {
  overflow: hidden;
  border-radius: 28px;
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.shot-large {
  grid-column: span 2;
  grid-row: span 2;
}

.shot figcaption {
  padding: 16px 18px 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.demo-frame {
  padding: 18px;
  border-radius: 30px;
}

.demo-frame video {
  width: 100%;
  border-radius: 22px;
  display: block;
  background: #02060b;
}

.video-fallback {
  margin-top: 16px;
  padding: 18px;
  border: 1px dashed rgba(79, 210, 255, 0.28);
  border-radius: 22px;
  background: rgba(255,255,255,0.03);
}

.video-fallback p {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.7;
}

.video-fallback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.data-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.data-card {
  padding: 28px;
  border-radius: 26px;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
  padding: 34px;
  border-radius: 32px;
  background:
    radial-gradient(circle at top left, rgba(79, 210, 255, 0.16), transparent 32%),
    linear-gradient(180deg, rgba(12, 30, 50, 0.92), rgba(7, 18, 31, 0.96));
}

.contact-meta {
  display: grid;
  gap: 14px;
}

.contact-meta div {
  padding: 20px;
  border-radius: 22px;
  background: rgba(255,255,255,0.04);
}

.contact-meta span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-meta strong {
  display: block;
  line-height: 1.6;
}

.site-footer {
  width: min(calc(100% - 32px), var(--max));
  margin: 40px auto 0;
  padding: 0 0 36px;
  text-align: center;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.site-footer span {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .hero,
  .solution-layout,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .metrics,
  .capability-grid,
  .data-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .shot-large {
    grid-column: span 2;
    grid-row: span 1;
  }

  .hero {
    min-height: auto;
    padding-top: 72px;
  }
}

@media (max-width: 720px) {
  .topbar {
    width: min(calc(100% - 18px), var(--max));
    padding: 12px 14px;
    border-radius: 28px;
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-grid;
    place-content: center;
    margin-left: auto;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-top: 8px;
  }

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

  .hero,
  .section {
    padding-top: 56px;
  }

  .hero h1 {
    font-size: clamp(2.4rem, 13vw, 4.1rem);
  }

  .visual-main,
  .visual-float {
    position: relative;
    width: 100%;
    right: auto;
    bottom: auto;
  }

  .hero-visual {
    min-height: auto;
    gap: 16px;
  }

  .hero-orbit {
    display: none;
  }

  .metrics,
  .capability-grid,
  .showcase-grid,
  .data-cards {
    grid-template-columns: 1fr;
  }

  .shot-large {
    grid-column: auto;
  }

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

  .timeline-item span {
    min-height: 64px;
  }

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

  .contact-panel,
  .solution-panel,
  .feature-card,
  .metrics article,
  .data-card,
  .demo-frame {
    border-radius: 22px;
  }
}