*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #0f172a;
  background: #0b1220;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(15,23,42,.95), rgba(15,23,42,.85), transparent);
  border-bottom: 1px solid rgba(148,163,184,.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.5rem;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.logo-main {
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .78rem;
  color: #e5e7eb;
}

.logo-sub {
  font-weight: 600;
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .32em;
  color: #38bdf8;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: .9rem;
  color: #cbd5f5;
}

.main-nav a {
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  transition: background .15s ease, color .15s ease, transform .1s ease;
}

.main-nav a:hover {
  background: rgba(148,163,184,.2);
  color: #e5e7eb;
  transform: translateY(-1px);
}

.main-nav .active {
  background: rgba(56,189,248,.18);
  color: #e0f2fe;
}

.btn-nav {
  border: 1px solid rgba(148,163,184,.6);
  padding-inline: .9rem;
}

.btn-nav.active {
  border-color: rgba(56,189,248,.8);
}

/* Hero */
.hero {
  padding: 3.5rem 0 3rem;
  background:
    radial-gradient(circle at top, rgba(56,189,248,.22), transparent 55%),
    radial-gradient(circle at bottom, rgba(34,197,94,.16), transparent 60%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.4fr);
  gap: 2.75rem;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.35rem, 3vw, 3rem);
  color: #e5e7eb;
  margin-bottom: 1rem;
}

.hero-text p {
  color: #cbd5f5;
  font-size: 1rem;
  max-width: 34rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.hero-card {
  background: radial-gradient(circle at top left, rgba(56,189,248,.4), transparent 60%),
              rgba(15,23,42,.92);
  border-radius: 1.25rem;
  padding: 1.5rem 1.4rem;
  border: 1px solid rgba(148,163,184,.4);
  box-shadow: 0 22px 45px rgba(15,23,42,.8);
}

.hero-card h2 {
  font-size: 1.05rem;
  color: #e5e7eb;
  margin-top: 0;
  margin-bottom: .75rem;
}

.hero-card ul {
  padding-left: 1.1rem;
  margin: 0;
  color: #cbd5f5;
  font-size: .9rem;
  display: grid;
  gap: 0.45rem;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .1s ease, box-shadow .1s ease, background .2s ease, border-color .2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #22c55e, #38bdf8);
  color: #0b1120;
  box-shadow: 0 14px 35px rgba(34,197,94,.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 45px rgba(34,197,94,.45);
}

.btn-secondary {
  background: rgba(15,23,42, .95);
  border-color: rgba(148,163,184,.7);
  color: #e5e7eb;
}

.btn-secondary:hover {
  border-color: rgba(56,189,248,.8);
}

/* Pillars */
.pillars {
  padding: 2rem 0 2.5rem;
}

.pillars h2 {
  text-align: center;
  color: #e5e7eb;
  font-size: 1.4rem;
  margin-bottom: 1.75rem;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.3rem;
}

.pillar {
  background: rgba(15,23,42,.9);
  border-radius: 1rem;
  padding: 1.3rem 1.15rem;
  border: 1px solid rgba(148,163,184,.35);
  box-shadow: 0 18px 40px rgba(15,23,42,.7);
}

.pillar h3 {
  margin-top: 0;
  margin-bottom: .5rem;
  color: #e0f2fe;
  font-size: 1.05rem;
}

.pillar p {
  margin: 0;
  color: #cbd5f5;
  font-size: .92rem;
  line-height: 1.6;
}

/* CTA strip */
.cta-strip {
  padding: 1.75rem 0 2.5rem;
}

.cta-strip-inner {
  border-radius: 1.5rem;
  border: 1px solid rgba(56,189,248,.5);
  background: radial-gradient(circle at top left, rgba(56,189,248,.45), transparent 58%),
              rgba(15,23,42,.98);
  padding: 1.2rem 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cta-strip-inner h2 {
  margin: 0;
  color: #e5e7eb;
  font-size: 1.15rem;
}

/* Pages */
.page-main {
  padding-bottom: 3rem;
}

.page-hero {
  padding: 2.4rem 0 1.4rem;
}

.page-hero h1 {
  margin: 0 0 .4rem;
  color: #e5e7eb;
  font-size: 1.7rem;
}

.page-hero p {
  margin: 0;
  color: #cbd5f5;
  max-width: 36rem;
  font-size: .98rem;
}

.page-content {
  padding: 0.5rem 0 2.5rem;
}

.page-content .narrow {
  max-width: 720px;
}

.page-content h2 {
  color: #e5e7eb;
  font-size: 1.1rem;
  margin-top: 1.6rem;
  margin-bottom: 0.4rem;
}

.page-content p,
.page-content li,
.page-content ol {
  color: #cbd5f5;
  font-size: .95rem;
  line-height: 1.7;
}

.page-content ul,
.page-content ol {
  padding-left: 1.3rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(148,163,184,.35);
  padding: 1.1rem 0 1.4rem;
  background: radial-gradient(circle at top, rgba(15,23,42,.95), #020617 58%);
}

.footer-inner {
  text-align: center;
}

.site-footer p {
  margin: 0;
  color: #9ca3af;
  font-size: .8rem;
}

.footer-tagline {
  margin-top: 0.25rem;
  color: #e5e7eb;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .65rem;
}

/* Responsive */
@media (max-width: 800px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-card {
    order: -1;
  }

  .pillars-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .main-nav {
    gap: 0.5rem;
    font-size: .82rem;
  }

  .logo-main {
    font-size: .72rem;
  }

  .logo-sub {
    font-size: .62rem;
  }
}