:root {
  --navy: #0B1F3A;
  --navy-2: #132A4D;
  --blue: #2F6FED;
  --blue-light: #6E9BFF;
  --ink: #16233B;
  --muted: #5B6B85;
  --bg: #F6F8FC;
  --card: #FFFFFF;
  --border: #E2E8F0;
  --amber: #D98B23;
  --radius: 12px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header.site {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--navy);
}
.brand img { height: 32px; width: auto; display: block; }
.brand-cardo { color: var(--navy); }
.brand-nexus { color: var(--blue); }
nav.primary { display: flex; align-items: center; gap: 28px; }
nav.primary a {
  color: var(--ink);
  font-size: 15px;
  font-weight: 400;
}
nav.primary a:hover { color: var(--blue); text-decoration: none; }
.nav-cta {
  background: var(--navy);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 500 !important;
}
.nav-cta:hover { background: var(--blue); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  color: var(--navy);
  cursor: pointer;
}

@media (max-width: 820px) {
  nav.primary {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }
  nav.primary.open { display: flex; }
  nav.primary a { padding: 14px 24px; width: 100%; border-top: 1px solid var(--border); }
  .nav-toggle { display: block; }
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  padding: 84px 0 96px;
}
.hero h1 {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 500;
  max-width: 780px;
  margin: 0 0 20px;
}
.hero p.lead {
  font-size: 19px;
  color: #C7D3EA;
  max-width: 620px;
  margin: 0 0 32px;
}
.hero-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.hero-tags span {
  border: 1px solid rgba(255,255,255,0.25);
  color: #C7D3EA;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
}

/* Hero split layout — text left, orbit canvas right */
.hero-split {
  display: flex;
  align-items: center;
  gap: 48px;
}
.hero-text {
  flex: 1;
  min-width: 0;
}
.hero-orbit-wrap {
  flex: 0 0 440px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-orbit-wrap canvas {
  width: 100%;
  height: auto;
  max-width: 440px;
  display: block;
}

@media (max-width: 1040px) {
  .hero-orbit-wrap { flex: 0 0 360px; }
}
@media (max-width: 860px) {
  .hero-split { flex-direction: column; gap: 40px; }
  .hero-orbit-wrap { flex: none; width: 100%; max-width: 380px; margin: 0 auto; }
}

.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 15px;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #245ad1; text-decoration: none; }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
  margin-left: 12px;
}
.btn-outline:hover { background: rgba(255,255,255,0.08); text-decoration: none; }

/* Sections */
section { padding: 72px 0; }
section.tight { padding: 48px 0; }
.section-label {
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue);
  margin: 0 0 10px;
}
h2 { font-size: 30px; font-weight: 500; margin: 0 0 14px; color: var(--navy); }
h3 { font-size: 19px; font-weight: 500; margin: 0 0 8px; color: var(--navy); }
p.section-sub { color: var(--muted); max-width: 680px; font-size: 16px; margin: 0 0 40px; }

.grid {
  display: grid;
  gap: 20px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 32px; }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card p { color: var(--muted); font-size: 15px; margin: 0; }
.card .icon-dot {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(47,111,237,0.1);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-weight: 500;
  margin-bottom: 14px;
}

.alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.model-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 460px;
  margin: 0 auto;
}
.model-step {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
}
.model-step h3 { margin: 0 0 6px; }
.model-step p { margin: 0; color: var(--muted); font-size: 14px; }
.model-arrow { font-size: 20px; line-height: 1; color: var(--blue); margin: 6px 0; }

.band {
  background: var(--navy);
  color: #fff;
}
.band h2 { color: #fff; }
.band p.section-sub { color: #AEBEDC; }
.band .card {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.12);
}
.band .card p { color: #AEBEDC; }
.band .card h3 { color: #fff; }

.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--ink);
  background: #fff;
}

.cta-band {
  background: var(--blue);
  color: #fff;
  text-align: center;
  padding: 64px 0;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: #E4ECFE; margin-bottom: 28px; }
.cta-band .btn-primary { background: #fff; color: var(--blue); }
.cta-band .btn-primary:hover { background: #eef3ff; }
.cta-band .btn-outline { border-color: rgba(255,255,255,0.5); }

/* Footer */
footer.site {
  background: var(--navy);
  color: #AEBEDC;
  padding: 56px 0 28px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-grid h4 { color: #fff; font-weight: 500; font-size: 14px; margin: 0 0 14px; }
.footer-grid a { color: #AEBEDC; display: block; margin-bottom: 10px; font-size: 14px; }
.footer-grid a:hover { color: #fff; text-decoration: none; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 600; font-size: 17px; margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.4px; }
.footer-brand img { height: 26px; width: auto; }
.footer-brand .brand-nexus { color: var(--blue-light); }
.footer-tagline { color: #7E90B3; font-size: 12px; letter-spacing: 0.6px; text-transform: uppercase; margin: 0 0 16px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: #7E90B3;
  font-size: 13px;
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Legal pages */
.legal h2 { margin-top: 40px; }
.legal h2:first-child { margin-top: 0; }
.legal p, .legal li { color: var(--ink); font-size: 15.5px; }
.legal ul { padding-left: 22px; }
.disclaimer {
  background: #FFF7E8;
  border: 1px solid #F0DDAE;
  color: #7A5B14;
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 14.5px;
  margin-bottom: 36px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 500; color: var(--navy); margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
.field textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }