* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: #e2e8f0;
  background: radial-gradient(900px 420px at 10% 0%, rgba(30,58,138,.35), transparent 60%),
              radial-gradient(800px 420px at 90% 10%, rgba(14,116,144,.28), transparent 55%),
              linear-gradient(180deg, #050913, #0b1220 55%, #0f172a);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.08) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  mask-image: radial-gradient(circle at 20% 0%, rgba(0,0,0,.7), transparent 60%);
  z-index: -1;
}
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 6vw;
  background: rgba(7,18,38,.88);
  color: #e2e8f0;
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  border-bottom: 1px solid rgba(56,189,248,.25);
}
.logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(79,70,229,.12);
  border: 1px solid rgba(79,70,229,.35);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 24px rgba(79,70,229,.25);
}
.logo img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
}
.brand h1 { font-size: 20px; color: #e2e8f0; }
.brand p { color: #94a3b8; font-size: 14px; }
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}
.badges span {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(14,165,233,.12);
  border: 1px solid rgba(14,165,233,.35);
  color: #0ea5e9;
  box-shadow: 0 0 12px rgba(14,165,233,.35);
}
.enter {
  margin-left: auto;
  padding: 10px 16px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0ea5e9, #4f46e5);
  color: #fff;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
  box-shadow: 0 10px 22px rgba(79,70,229,.35);
}
.enter:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(79,70,229,.45); }

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 40px 6vw 52px;
  align-items: start;
  animation: fadeIn .4s ease;
}
.intro h2 {
  font-size: 24px;
  margin: 8px 0 8px;
  color: #e2e8f0;
  text-shadow: 0 0 22px rgba(56,189,248,.35);
}
.intro p { line-height: 1.8; color: #cbd5f5; }
.intro .lead { font-size: 15px; color: #cbd5f5; }
.block {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(7,18,38,.78);
  border: 1px solid rgba(56,189,248,.25);
  box-shadow: inset 0 0 24px rgba(56,189,248,.08);
}
.block h3 { font-size: 14px; color: #93c5fd; margin-bottom: 6px; }
.features {
  list-style: none;
  display: grid;
  gap: 8px;
}
.features li {
  padding-left: 10px;
  position: relative;
  color: #cbd5f5;
}
.features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: #38bdf8;
  box-shadow: 0 0 10px rgba(56,189,248,.8);
}
.metrics {
  margin: 18px 0 6px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.metrics div {
  background: rgba(7,18,38,.8);
  border: 1px solid rgba(56,189,248,.25);
  border-radius: 12px;
  padding: 10px 12px;
  display: grid;
  gap: 4px;
  text-align: center;
}
.metrics strong { font-size: 20px; color: #e2e8f0; }
.metrics span { font-size: 12px; color: #94a3b8; }
.cta { margin-top: 18px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0ea5e9, #4f46e5);
  color: #fff;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
  box-shadow: 0 10px 22px rgba(79,70,229,.35);
}
.btn.ghost {
  background: transparent;
  color: #e2e8f0;
  border: 1px solid rgba(56,189,248,.35);
}
.btn.ghost:hover { box-shadow: 0 8px 16px rgba(56,189,248,.25); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 16px rgba(79,70,229,.25); }



.footer {
  text-align: center;
  padding: 20px;
  color: #94a3b8;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 24px rgba(56,189,248,.15); }
  50% { box-shadow: 0 0 48px rgba(56,189,248,.35); }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  .enter { margin-left: 0; }
  .metrics { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .metrics { grid-template-columns: 1fr; }
}