:root {
  --bg: #07111f;
  --bg-soft: #0d1830;
  --panel: rgba(16, 32, 59, 0.78);
  --panel-strong: #10223e;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e7eefb;
  --muted: #9eb3cf;
  --primary: #3ba6ff;
  --primary-strong: #1d7ef0;
  --cyan: #39d0ff;
  --purple: #8b7cff;
  --gold: #f2c66d;
  --success: #54d5a7;
  --shadow: 0 20px 60px rgba(5, 11, 25, 0.35);
  --radius: 22px;
  --container: min(1180px, calc(100% - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(59, 166, 255, 0.15), transparent 32%),
    radial-gradient(circle at 85% 15%, rgba(139, 124, 255, 0.18), transparent 24%),
    linear-gradient(180deg, #05101d 0%, #081321 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.12;
  pointer-events: none;
}

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

button,
a {
  color: inherit;
}

.page-shell {
  position: relative;
  z-index: 1;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(6, 14, 24, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 1px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  box-shadow: var(--shadow);
}

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

.brand strong {
  font-size: 16px;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 15px;
  transition: color 0.25s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
}

.site-nav .nav-cta {
  padding: 12px 18px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, rgba(59,166,255,0.92), rgba(139,124,255,0.92));
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
  width: 44px;
  height: 44px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  margin: 5px auto;
  border-radius: 4px;
}

.hero-section {
  padding: 88px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: #d8e8ff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-copy h1,
.section-heading h2,
.security-copy h2,
.about-grid h2,
.contact-panel h2 {
  margin: 18px 0 18px;
  line-height: 1.12;
}

.hero-copy h1 {
  font-size: clamp(40px, 5vw, 64px);
}

.hero-copy p,
.section-heading p,
.security-copy p,
.about-grid p,
.contact-panel p,
.feature-card p,
.architecture-stack p,
.scenario-card p,
.about-points p,
.contact-box small,
.site-footer p {
  color: var(--muted);
  line-height: 1.8;
  font-size: 15px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin: 30px 0 24px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

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

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 16px 40px rgba(29, 126, 240, 0.28);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.btn-full {
  width: 100%;
}

.hero-tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-tags li {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #d8e5fa;
  font-size: 13px;
}

.hero-panel {
  position: relative;
}

.signal-card,
.mini-card,
.feature-card,
.dashboard-card,
.scenario-card,
.compliance-card,
.about-points article,
.contact-panel,
.stats-grid article {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

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

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  font-size: 14px;
  color: #c8daf6;
}

.card-top strong {
  font-size: 32px;
  color: #fff;
}

.metric-bars {
  height: 180px;
  display: grid;
  grid-template-columns: repeat(6, minmax(20px, 1fr));
  align-items: end;
  gap: 14px;
}

.metric-bars span {
  display: block;
  border-radius: 20px 20px 6px 6px;
  background: linear-gradient(180deg, rgba(57, 208, 255, 0.95), rgba(139, 124, 255, 0.45));
  min-height: var(--bar);
  box-shadow: inset 0 -10px 26px rgba(255, 255, 255, 0.08);
}

.floating-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.mini-card {
  padding: 18px;
  border-radius: 22px;
}

.mini-card strong {
  display: block;
  font-size: 22px;
  margin-bottom: 8px;
}

.mini-card span {
  color: var(--muted);
  font-size: 14px;
}

.stats-section {
  padding: 12px 0 32px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stats-grid article {
  padding: 24px;
  border-radius: 22px;
}

.stats-grid strong {
  display: block;
  font-size: clamp(30px, 4vw, 42px);
  margin-bottom: 8px;
  color: #fff;
}

.stats-grid span {
  color: var(--muted);
}

.section {
  padding: 84px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.light p,
.section-heading.light h2 {
  color: #eef4ff;
}

.feature-grid,
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  padding: 26px;
  border-radius: 24px;
}

.feature-card .icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  margin-bottom: 16px;
  font-weight: 700;
  background: linear-gradient(135deg, rgba(59, 166, 255, 0.18), rgba(139, 124, 255, 0.18));
  color: #eaf4ff;
}

.feature-card h3,
.scenario-card h3,
.compliance-card h3,
.about-points strong,
.contact-box strong {
  margin: 0 0 12px;
  font-size: 20px;
}

.section-dark {
  background: linear-gradient(180deg, rgba(8, 18, 34, 0.92), rgba(4, 10, 20, 0.95));
}

.architecture-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 24px;
  align-items: center;
}

.architecture-stack {
  display: grid;
  gap: 18px;
}

.architecture-stack article,
.matrix-row,
.compliance-item,
.contact-box > div {
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}

.architecture-stack strong,
.compliance-item strong,
.contact-box span,
.contact-box strong {
  display: block;
}

.architecture-stack strong,
.compliance-item strong {
  margin-bottom: 8px;
}

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

.dashboard-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 22px;
}

.dashboard-header span {
  font-size: 22px;
  font-weight: 700;
}

.dashboard-header small,
.footer-meta span,
.contact-box small {
  color: var(--muted);
}

.matrix-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.matrix-row div {
  height: 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}

.matrix-row i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
}

.dashboard-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 12px;
}

.dashboard-list li {
  position: relative;
  padding-left: 18px;
  color: #dfeaff;
}

.dashboard-list li::before,
.security-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--primary));
}

.scenario-card {
  min-height: 230px;
  border-radius: 24px;
  padding: 26px;
  position: relative;
  overflow: hidden;
}

.scenario-card::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  right: -60px;
  bottom: -60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
}

.accent-blue { background: linear-gradient(160deg, rgba(59,166,255,0.18), rgba(16,32,59,0.82)); }
.accent-cyan { background: linear-gradient(160deg, rgba(57,208,255,0.16), rgba(16,32,59,0.82)); }
.accent-purple { background: linear-gradient(160deg, rgba(139,124,255,0.18), rgba(16,32,59,0.82)); }
.accent-gold { background: linear-gradient(160deg, rgba(242,198,109,0.18), rgba(16,32,59,0.82)); }

.security-grid,
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 26px;
  align-items: start;
}

.security-list,
.dashboard-list,
.security-copy ul {
  list-style: none;
  padding: 0;
}

.security-list {
  margin: 22px 0 0;
  display: grid;
  gap: 16px;
}

.security-list li {
  position: relative;
  padding-left: 18px;
  color: #d9e7fd;
}

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

.compliance-item {
  margin-top: 14px;
}

.compliance-item span,
.contact-box span {
  color: var(--muted);
  font-size: 13px;
}

.about-points {
  display: grid;
  gap: 18px;
}

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

.contact-section {
  padding-top: 10px;
}

.contact-panel {
  border-radius: 30px;
  padding: 34px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.contact-box {
  padding: 24px;
  border-radius: 24px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  display: grid;
  gap: 16px;
}

.site-footer {
  padding: 28px 0 36px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-meta {
  display: grid;
  gap: 8px;
  text-align: right;
}

@media (max-width: 1080px) {
  .hero-grid,
  .architecture-grid,
  .security-grid,
  .about-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 82px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 18px;
    border-radius: 20px;
    background: rgba(9, 20, 36, 0.98);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow);
  }

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

  .hero-section {
    padding-top: 54px;
  }

  .hero-copy h1 {
    font-size: 34px;
  }

  .feature-grid,
  .scenario-grid,
  .stats-grid,
  .floating-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 68px 0;
  }

  .signal-card.large,
  .dashboard-card,
  .contact-panel,
  .compliance-card,
  .feature-card,
  .scenario-card,
  .stats-grid article,
  .about-points article {
    padding: 22px;
  }

  .footer-meta {
    text-align: left;
  }
}