:root {
  --surface-0: #030304;
  --surface-1: #08090c;
  --surface-2: #111216;
  --surface-contrast: #f5f5f5;
  --text-primary: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.6);
  --accent-primary: #33808a;
  --accent-secondary: #4fb2ff;
  --border-soft: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --radius-pill: 999px;
  --nav-blur: 16px;
  --transition-base: 0.25s ease;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Montserrat","Space Grotesk", "Microsoft YaHei", sans-serif;
  background-color: var(--surface-0);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--accent-primary);
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

main {
  position: relative;
  z-index: 1;
}

.navbar {
  background: transparent;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.navbar-solid {
  background: rgba(3, 3, 4, 0.92);
  backdrop-filter: blur(var(--nav-blur));
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
}

.nav-link {
  color: rgba(255, 255, 255, 0.72) !important;
  font-weight: 500;
}

.nav-link:hover,
.nav-link:focus {
  color: #fff !important;
}

.section-pad {
  padding: 5rem 0;
  background: var(--surface-0);
}

.section-heading {
  margin-bottom: 2rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.component-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  overflow: hidden;
  height: 100%;
  backdrop-filter: blur(10px);
}

.component-card__body {
  padding: 1.75rem;
}

.media-cover {
  height: 220px;
  background-size: cover;
  background-position: center;
}

.badge-outline {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #041510;
  font-weight: 600;
}

.btn-primary:hover {
  background: #5fe0b4;
  border-color: #5fe0b4;
}

.btn-outline-light {
  border-radius: var(--radius-pill);
}

.text-muted-soft {
  color: var(--text-muted);
}

.layout-grid {
  display: grid;
  gap: 1.5rem;
}

.cta-section {
  padding: 5rem 0;
  background: var(--surface-1);
}

.cta-card {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15, 116, 179, 0.92), rgba(5, 5, 5, 0.94));
  padding: clamp(2rem, 4vw, 3rem);
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  border: 1px solid var(--border-strong);
}

.cta-form .form-control {
  border-radius: 0.85rem;
  border: none;
}

.cta-form .form-control:focus {
  box-shadow: 0 0 0 0.2rem rgba(120, 248, 200, 0.4);
}

.site-footer {
  padding: 2.5rem 0;
  background: var(--surface-1);
  border-top: 1px solid var(--border-soft);
  color: rgba(255, 255, 255, 0.75);
}

.section-hidden {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 576px) {
  .section-pad {
    padding: 3rem 0;
  }
}