.portal-page {
  min-height: 100vh;
  background: linear-gradient(165deg, #0a1628 0%, #10213b 45%, #173156 100%);
  color: #e8eef5;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.portal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.portal-logo img {
  max-height: 44px;
  width: auto;
}

.portal-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.9rem;
}

.portal-nav a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
}

.portal-nav a:hover,
.portal-nav a.active {
  color: #fff;
}

.portal-nav a.muted {
  opacity: 0.45;
  pointer-events: none;
}

.portal-btn-login {
  display: inline-block;
  padding: 0.55rem 1.25rem;
  background: #3d8bfd;
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.15s ease;
}

.portal-btn-login:hover {
  background: #2f7ae5;
  color: #fff;
}

.portal-hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem 5rem;
  text-align: center;
}

.portal-hero-mark {
  width: 88px;
  height: 88px;
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

.portal-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: #fff;
}

.portal-hero p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.78);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.portal-btn-primary {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: #fff;
  color: #10213b;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.portal-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
  color: #10213b;
}

.portal-footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 640px) {
  .portal-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .portal-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1rem;
  }
}