* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top, #dbeafe 0%, #f8fbff 24%, #eef4ff 48%, #0f1220 100%);
  color: #0f172a;
}
a { color: inherit; text-decoration: none; }
.shell { min-height: 100vh; padding: 32px 16px; }
.topbar {
  width: min(1440px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 999px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { display: block; width: 165px; height: 40px; object-fit: contain; }
.back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 18px;
  border: 1px solid #e2e8f0;
  border-radius: 999px;
  background: #fff;
  color: #334155;
  font-size: 14px;
  font-weight: 500;
}
.layout {
  width: min(1080px, 100%);
  margin: 32px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 40px;
  padding: 48px;
  border-radius: 36px;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(135deg, #0b0f1b 0%, #1a1f35 52%, #2f3147 100%);
}
.hero {
  padding: 32px;
  border-radius: 28px;
  background: radial-gradient(circle at top right, rgba(96,165,250,0.16), transparent 24%), linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
}
.hero p.kicker { margin: 0; font-size: 18px; font-weight: 600; color: #f1f5f9; }
.hero h1 {
  margin: 32px 0 0;
  max-width: 520px;
  font-size: 56px;
  line-height: 1.15;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}
.hero p.desc {
  margin: 24px 0 0;
  max-width: 520px;
  font-size: 18px;
  line-height: 1.8;
  color: #cbd5e1;
}
.feature-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.feature {
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
}
.feature h2 { margin: 0; font-size: 14px; }
.feature p { margin: 12px 0 0; font-size: 14px; line-height: 1.8; color: #cbd5e1; }
.contact-panel {
  width: 360px;
  aspect-ratio: 199 / 284;
  align-self: center;
  justify-self: center;
}
.contact-panel img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 199 / 284;
  object-fit: contain;
  border-radius: 10px;
}
@media (max-width: 1023px) {
  .layout { grid-template-columns: 1fr; padding: 24px; }
  .contact-panel { width: min(100%, 360px); justify-self: center; }
}
@media (max-width: 640px) {
  .shell { padding: 20px 12px; }
  .topbar { padding: 12px; }
  .layout { margin-top: 20px; padding: 18px; }
  .hero { padding: 20px; }
  .contact-panel { width: 100%; }
  .hero h1 { font-size: 34px; line-height: 1.18; }
  .feature-grid { grid-template-columns: 1fr; }
}