:root {
  --bg: #050816;
  --bg-soft: #0a1332;
  --card: rgba(15, 28, 68, 0.65);
  --line: rgba(95, 129, 255, 0.35);
  --text: #eef4ff;
  --text-soft: #a7b8de;
  --accent: #45d7ff;
  --accent-2: #6f7cff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 20%, rgba(69, 215, 255, 0.16), transparent 35%),
    radial-gradient(circle at 80% 5%, rgba(111, 124, 255, 0.2), transparent 42%),
    var(--bg);
  line-height: 1.7;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 78vh;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 24px;
  padding: 0;
  margin: 0;
}

.nav-links a {
  color: var(--text-soft);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--accent);
}

.hero-content {
  position: relative;
  padding: 90px 0 120px;
  z-index: 2;
}

.tag {
  color: var(--accent);
  font-size: 0.86rem;
  letter-spacing: 0.16em;
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.2;
  margin: 0 0 18px;
}

.subtitle {
  max-width: 720px;
  color: var(--text-soft);
  margin-bottom: 30px;
}

.cta {
  display: inline-block;
  color: #051329;
  background: linear-gradient(90deg, var(--accent), #8ce2ff);
  text-decoration: none;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 999px;
}

.hero-glow {
  position: absolute;
  right: -8%;
  bottom: -18%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(69, 215, 255, 0.26), transparent 62%);
  filter: blur(20px);
}

.section {
  padding: 72px 0;
}

h2 {
  margin: 0 0 24px;
  font-size: 1.6rem;
}

.section p {
  color: var(--text-soft);
}

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

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  backdrop-filter: blur(6px);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.card ul {
  margin: 10px 0 0;
  padding-left: 20px;
  color: var(--text-soft);
}

.card li {
  margin-bottom: 4px;
}

.timeline {
  display: grid;
  gap: 16px;
}

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

.node {
  border-left: 2px solid rgba(69, 215, 255, 0.5);
  padding: 10px 0 10px 16px;
  background: rgba(9, 20, 50, 0.45);
  border-radius: 8px;
}

.node h3 {
  margin: 0 0 6px;
}

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

.framework article {
  border: 1px solid rgba(130, 161, 255, 0.26);
  border-radius: 12px;
  background: rgba(10, 26, 64, 0.55);
  padding: 18px;
}

.framework h3,
.solution h3 {
  margin-top: 0;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.solution {
  border: 1px solid rgba(69, 215, 255, 0.22);
  border-radius: 12px;
  padding: 20px;
  background: linear-gradient(160deg, rgba(10, 28, 70, 0.72), rgba(8, 18, 45, 0.7));
}

.cert-list {
  display: grid;
  gap: 10px;
}

.cert-list p {
  margin: 0;
  padding: 12px 14px;
  border-left: 3px solid var(--accent);
  background: rgba(8, 18, 45, 0.65);
}

.company {
  border-top: 1px solid var(--line);
}

.company-grid {
  display: grid;
  gap: 10px 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.company-grid p {
  margin: 0;
  padding: 12px 14px;
  background: rgba(12, 23, 55, 0.6);
  border: 1px solid rgba(126, 154, 255, 0.2);
  border-radius: 10px;
}

.company-grid span {
  color: #d5e4ff;
  font-weight: 600;
  margin-right: 8px;
}

.footer {
  border-top: 1px solid var(--line);
  background: #040a1e;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  gap: 12px;
}

.footer p {
  margin: 0;
  color: #9fb3de;
}

.icp {
  color: #d6e2ff;
  font-weight: 600;
}

.icp a {
  color: #b8d4ff;
  text-decoration: none;
  border-bottom: 1px solid rgba(69, 215, 255, 0.45);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.icp a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.gallery-section .gallery-lead {
  margin-top: -12px;
  margin-bottom: 22px;
  font-size: 0.95rem;
}

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

.gallery-item {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(95, 129, 255, 0.35);
  background: rgba(10, 22, 52, 0.75);
}

.gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  vertical-align: middle;
}

.gallery-item figcaption {
  padding: 10px 14px 12px;
  font-size: 0.9rem;
  color: var(--text-soft);
  border-top: 1px solid rgba(95, 129, 255, 0.2);
}

@media (max-width: 900px) {
  .grid,
  .company-grid,
  .framework,
  .solution-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .hero-content {
    padding-top: 64px;
  }

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

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