:root {
  --hub-ink: #1f2a45;
  --hub-soft: #5f6f95;
  --hub-line: rgba(61, 90, 170, 0.16);
  --hub-panel: rgba(255, 255, 255, 0.94);
  --hub-brand: #254cc3;
  --hub-brand-soft: #e8eeff;
  --hub-shadow: 0 18px 38px rgba(23, 39, 91, 0.12);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--hub-ink);
  background:
    radial-gradient(circle at top left, rgba(163, 193, 255, 0.34), transparent 34%),
    radial-gradient(circle at 92% 12%, rgba(181, 243, 212, 0.32), transparent 28%),
    linear-gradient(165deg, #f5f8ff 0%, #eef4ff 52%, #f9fcff 100%);
}

.hub-shell {
  max-width: 1280px;
  margin: 20px auto 34px;
  padding: 0 20px 26px;
}

.hub-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(138, 163, 234, 0.42);
  border-radius: var(--radius-md);
  padding: 30px 30px 26px;
  color: #eef3ff;
  background:
    radial-gradient(circle at 18% 20%, rgba(112, 226, 191, 0.26), transparent 24%),
    linear-gradient(125deg, #172a72 0%, #2447bb 48%, #2f63df 100%);
  box-shadow: 0 24px 48px rgba(24, 41, 115, 0.24);
}

.hub-hero::after {
  content: "";
  position: absolute;
  inset: auto -70px -70px auto;
  width: 220px;
  height: 220px;
  border-radius: var(--radius-md);
  transform: rotate(18deg);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.kicker {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #bfe6d2;
}

.hub-hero h1 {
  margin: 10px 0 12px;
  font: 400 3rem/1 var(--site-font-display);
  letter-spacing: 0.01em;
}

.hub-hero > p {
  margin: 0;
  max-width: 860px;
  color: #dbe6ff;
  font-size: 1rem;
  line-height: 1.65;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.hero-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid rgba(164, 189, 255, 0.52);
  border-radius: var(--radius-sm);
  background: rgba(9, 18, 57, 0.24);
  text-decoration: none;
  color: #f4f8ff;
  font-weight: 600;
}

.hero-links a:hover {
  background: rgba(9, 18, 57, 0.38);
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.scenario-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 236px;
  padding: 18px;
  border: 1px solid var(--hub-line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 250, 255, 0.96));
  box-shadow: var(--hub-shadow);
  overflow: hidden;
}

.scenario-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, #2f63df, #4aa8ff);
}

.scenario-card:nth-child(3n+1)::before {
  background: linear-gradient(90deg, #b96b15, #f1b25e);
}

.scenario-card:nth-child(3n+2)::before {
  background: linear-gradient(90deg, #177053, #47b185);
}

.card-index {
  margin: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 28px;
  border: 1px solid #d5def8;
  border-radius: var(--radius-sm);
  background: #f8faff;
  color: #5270c2;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.card-industry {
  margin: 12px 0 0;
  color: #5c7099;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.scenario-card h2 {
  margin: 10px 0 8px;
  color: #22304f;
  font-size: 1.22rem;
  line-height: 1.25;
  font-weight: 700;
}

.scenario-card p {
  margin: 0;
  color: var(--hub-soft);
  line-height: 1.62;
}

.card-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid #cbd7ff;
  border-radius: var(--radius-sm);
  background: var(--hub-brand-soft);
  color: var(--hub-brand);
  text-decoration: none;
  font-weight: 700;
}

.card-link:hover {
  background: #dfe7ff;
}

.builder-card {
  background: linear-gradient(145deg, #10183d 0%, #1a2a68 48%, #2441a0 100%);
  border-color: rgba(100, 126, 218, 0.42);
  color: #e4ebff;
}

.builder-card::before {
  background: linear-gradient(90deg, #93c9ff, #d2edff);
}

.builder-card .card-index {
  border-color: rgba(168, 194, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
  color: #d9e7ff;
}

.builder-card .card-industry,
.builder-card p,
.builder-card h2 {
  color: #dce6ff;
}

.builder-card .card-link {
  border-color: rgba(173, 215, 255, 0.62);
  background: #bfe0ff;
  color: #0f3168;
}

@media (max-width: 1040px) {
  .hub-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .hub-shell {
    margin-top: 18px;
    padding: 0 14px 20px;
  }

  .hub-hero {
    padding: 24px 18px 20px;
  }

  .hub-hero h1 {
    font-size: 2.35rem;
  }

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