* {
  box-sizing: border-box;
}
:root {
  --bg: #050914;
  --panel: rgba(11, 22, 43, 0.78);
  --panel2: rgba(16, 33, 64, 0.62);
  --text: #f5f8ff;
  --muted: #9cadc7;
  --blue: #4a8cff;
  --cyan: #21d4fd;
  --line: rgba(90, 150, 255, .22);
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 75% 10%, rgba(33, 212, 253, .16), transparent 28%),
    radial-gradient(circle at 10% 30%, rgba(74, 140, 255, .15), transparent 32%),
    var(--bg);
}
a {
  color: inherit;
  text-decoration: none;
}
.nav {
  position: fixed;
  top: 0;
  z-index: 10;
  width: 100%;
  height: 76px;
  padding: 0 7vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(5, 9, 20, .72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(33, 212, 253, .6);
  border-radius: 12px;
  color: var(--cyan);
  font-weight: 900;
  box-shadow: 0 0 28px rgba(33, 212, 253, .25);
}
.brand strong {
  display: block;
  letter-spacing: 2px;
}
.brand small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 2px;
}
.nav nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  color: #c9d6ef;
}
.nav-cta {
  border: 1px solid rgba(74, 140, 255, .7);
  padding: 10px 16px;
  border-radius: 8px;
}
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  padding: 120px 7vw 70px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 78px 78px;
  mask-image: radial-gradient(circle at center, black, transparent 72%);
  opacity: .32;
}
.hero-content {
  position: relative;
}
.eyebrow, .section-tag {
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 2.6px;
  font-weight: 700;
}
h1 {
  margin: 18px 0;
  font-size: clamp(46px, 7vw, 86px);
  line-height: 1.02;
  letter-spacing: -3px;
}
h2 {
  margin: 10px 0 24px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  letter-spacing: -1.5px;
}
.lead {
  max-width: 690px;
  color: #c3d0e6;
  font-size: 19px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
}
.btn {
  padding: 15px 24px;
  border-radius: 10px;
  font-weight: 700;
}
.primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: white;
  box-shadow: 0 0 32px rgba(74, 140, 255, .35);
}
.secondary {
  border: 1px solid rgba(255,255,255,.22);
}
.orb-wrap {
  position: relative;
  height: 620px;
  display: grid;
  place-items: center;
}
.orb {
  width: min(42vw, 520px);
  height: min(42vw, 520px);
  border-radius: 50%;
  border: 1px solid rgba(33, 212, 253, .35);
  background:
    radial-gradient(circle at 50% 50%, rgba(33,212,253,.22), transparent 18%),
    radial-gradient(circle at 50% 50%, transparent 45%, rgba(74,140,255,.2) 46%, transparent 48%),
    radial-gradient(circle, rgba(9, 20, 42, .2), rgba(5, 9, 20, .72));
  box-shadow: inset 0 0 80px rgba(33,212,253,.12), 0 0 80px rgba(74,140,255,.28);
  display: grid;
  place-items: center;
  animation: float 6s ease-in-out infinite;
}
.core {
  font-size: 150px;
  color: rgba(245,248,255,.92);
  text-shadow: 0 0 38px rgba(33,212,253,.8);
  font-weight: 900;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}
.stats {
  margin: -70px 7vw 70px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: rgba(8, 17, 34, .74);
  backdrop-filter: blur(20px);
  border-radius: 18px;
  overflow: hidden;
}
.stats div {
  padding: 32px;
  border-right: 1px solid var(--line);
}
.stats div:last-child {
  border-right: 0;
}
.stats strong {
  display: block;
  font-size: 30px;
}
.stats span {
  color: var(--muted);
  font-size: 14px;
}
.section {
  padding: 86px 7vw;
}
.split {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 56px;
}
.panel, .card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 22px;
  padding: 34px;
}
.panel p, .card p, .contact p {
  color: #bdc9df;
  line-height: 1.85;
}
.features {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.features span {
  padding: 10px 14px;
  border: 1px solid rgba(33, 212, 253, .26);
  border-radius: 999px;
  color: #d8e7ff;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  background: linear-gradient(180deg, rgba(16,33,64,.82), rgba(8,17,34,.7));
  min-height: 360px;
}
.icon {
  display: inline-grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(33, 212, 253, .45);
  border-radius: 15px;
  color: var(--cyan);
  font-weight: 800;
}
.card h3 {
  font-size: 25px;
  margin: 28px 0 10px;
}
.card ul {
  color: #c7d4ea;
  padding-left: 18px;
  line-height: 2;
}
.glow {
  box-shadow: 0 0 70px rgba(33, 212, 253, .08);
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin: 28px 0;
}
.grid-2 div, .risk {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  background: rgba(255,255,255,.03);
}
.risk {
  color: #d6e2f8;
}
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.timeline div {
  padding: 24px;
  border-top: 1px solid var(--cyan);
  background: var(--panel2);
  border-radius: 0 0 18px 18px;
}
.timeline b {
  display: block;
  color: var(--cyan);
  margin-bottom: 12px;
}
.timeline span {
  color: #c6d3ea;
}
.contact {
  text-align: center;
}
.contact-box {
  margin: 26px auto 0;
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}
.contact-box a {
  padding: 15px 22px;
  border: 1px solid rgba(74, 140, 255, .55);
  border-radius: 12px;
  background: rgba(74, 140, 255, .08);
}
footer {
  border-top: 1px solid var(--line);
  padding: 34px 7vw;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}
@media (max-width: 900px) {
  .nav {
    padding: 0 22px;
  }
  .nav nav {
    display: none;
  }
  .hero, .split {
    grid-template-columns: 1fr;
  }
  .hero {
    padding-left: 22px;
    padding-right: 22px;
  }
  .orb-wrap {
    height: 340px;
  }
  .orb {
    width: 280px;
    height: 280px;
  }
  .core {
    font-size: 86px;
  }
  .stats, .cards, .timeline, .grid-2 {
    grid-template-columns: 1fr;
  }
  .stats {
    margin-left: 22px;
    margin-right: 22px;
  }
  .section {
    padding-left: 22px;
    padding-right: 22px;
  }
  footer {
    flex-direction: column;
    gap: 12px;
  }
}