:root {
  color-scheme: light;
  --bg: #060b14;
  --bg-soft: #0f1726;
  --ink: #eaf0ff;
  --ink-muted: #9fb0d0;
  --accent: #3fe5c7;
  --accent-2: #f9bf3b;
  --accent-3: #5c7dff;
  --card: rgba(16, 24, 40, 0.82);
  --border: rgba(92, 125, 255, 0.25);
  --glow: rgba(63, 229, 199, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

.bg-gradient {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 15% 20%, #1d3b55 0%, transparent 45%),
    radial-gradient(circle at 80% 10%, #163b3a 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, #251736 0%, transparent 45%),
    linear-gradient(145deg, #050a12 0%, #0b1220 60%, #090f1b 100%);
  z-index: -2;
}

.bg-grid {
  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: 80px 80px;
  opacity: 0.5;
  z-index: -1;
}

.site-header {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  width: 64px;
  height: 64px;
}

.brand-title {
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

.brand-subtitle {
  color: var(--ink-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
}

.site-nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.site-nav a {
  position: relative;
  padding-bottom: 4px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.cta {
  border: 1px solid var(--accent);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--accent);
  transition: all 0.3s ease;
}

.cta:hover {
  background: var(--accent);
  color: #031014;
  box-shadow: 0 0 18px rgba(63, 229, 199, 0.4);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px 120px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 48px;
  align-items: center;
  padding-top: 40px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.75rem;
  color: var(--accent-2);
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  margin: 18px 0 16px;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--ink-muted);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-3));
  color: #02040b;
  box-shadow: 0 12px 30px rgba(63, 229, 199, 0.25);
}

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

.btn.ghost {
  border-color: var(--border);
  color: var(--ink);
}

.btn.ghost:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(92, 125, 255, 0.2);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.hero-stats div {
  padding: 16px;
  border-radius: 16px;
  background: rgba(9, 16, 29, 0.6);
  border: 1px solid rgba(92, 125, 255, 0.15);
}

.hero-stats strong {
  display: block;
  font-size: 1.5rem;
  color: var(--accent);
}

.hero-stats span {
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.hero-visual {
  position: relative;
  min-height: 360px;
}

.orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  animation: float 8s ease-in-out infinite;
}

.orb-1 {
  width: 260px;
  height: 260px;
  top: 20px;
  right: 40px;
  background: radial-gradient(circle, rgba(63, 229, 199, 0.2), transparent 70%);
}

.orb-2 {
  width: 180px;
  height: 180px;
  top: 160px;
  right: 160px;
  background: radial-gradient(circle, rgba(92, 125, 255, 0.2), transparent 70%);
  animation-delay: -2s;
}

.orb-3 {
  width: 120px;
  height: 120px;
  top: 40px;
  right: 220px;
  background: radial-gradient(circle, rgba(249, 191, 59, 0.2), transparent 70%);
  animation-delay: -4s;
}

.core {
  position: absolute;
  right: 110px;
  top: 120px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(63, 229, 199, 0.5), rgba(92, 125, 255, 0.4));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  box-shadow: 0 0 40px var(--glow);
}

.core span {
  font-size: 1.6rem;
  letter-spacing: 0.2em;
}

.core em {
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
}

.section {
  margin-top: 120px;
}

.section-title {
  margin-bottom: 32px;
}

.section-title h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-top: 12px;
}

.grid {
  display: grid;
  gap: 24px;
}

.grid.two {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid.three {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  backdrop-filter: blur(10px);
  min-height: 180px;
}

.card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.card p {
  color: var(--ink-muted);
}

.card ul {
  margin-top: 16px;
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.card ul li::before {
  content: "▸";
  color: var(--accent);
  margin-right: 8px;
}

.mini-visual {
  width: 100%;
  height: 160px;
  margin-bottom: 16px;
  border-radius: 16px;
  background: rgba(8, 14, 24, 0.7);
  border: 1px solid rgba(92, 125, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.mini-visual svg {
  width: 100%;
  height: 100%;
}

.mini-visual text {
  fill: var(--ink-muted);
  font-size: 12px;
  letter-spacing: 0.2em;
}

.card.highlight {
  background: rgba(18, 28, 48, 0.85);
  border-color: rgba(63, 229, 199, 0.35);
  box-shadow: 0 18px 40px rgba(7, 15, 30, 0.4);
}

.glass {
  padding: 60px 48px;
  border-radius: 30px;
  background: rgba(10, 18, 32, 0.7);
  border: 1px solid rgba(63, 229, 199, 0.15);
}

.timeline-list {
  display: grid;
  gap: 20px;
}

.timeline-item {
  padding: 24px;
  border-radius: 18px;
  background: rgba(8, 14, 24, 0.7);
  border: 1px solid rgba(92, 125, 255, 0.2);
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: #021015;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  margin-bottom: 12px;
}

.contact {
  text-align: center;
}

.contact-card {
  margin-top: 32px;
  padding: 32px;
  border-radius: 24px;
  background: rgba(10, 18, 32, 0.8);
  border: 1px solid rgba(63, 229, 199, 0.25);
  display: grid;
  gap: 20px;
  justify-items: center;
}

.contact-label {
  color: var(--ink-muted);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.site-footer {
  text-align: center;
  padding: 32px 24px 60px;
  color: var(--ink-muted);
  font-size: 0.85rem;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.9s ease forwards;
}

.delay-1 {
  animation-delay: 0.15s;
}

.delay-2 {
  animation-delay: 0.3s;
}

.delay-3 {
  animation-delay: 0.45s;
}

.delay-4 {
  animation-delay: 0.6s;
}

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

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@media (max-width: 900px) {
  .site-header {
    flex-wrap: wrap;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    margin-left: 0;
  }

  .hero-visual {
    min-height: 320px;
  }

  .orb-1 {
    right: 0;
  }

  .orb-2 {
    right: 80px;
  }

  .orb-3 {
    right: 140px;
  }
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 12px;
  }

  .cta {
    align-self: stretch;
    text-align: center;
  }

  .glass {
    padding: 40px 24px;
  }

  .hero-visual {
    min-height: 260px;
  }

  .core {
    right: 40px;
  }
}