.skip-link {
  position: fixed;
  top: calc(var(--space-2xl) * -1);
  left: var(--space-sm);
  z-index: 1000;
  padding: var(--space-xs) var(--space-sm);
  color: var(--white);
  background: var(--accent);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-sm);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  border-bottom-color: var(--border);
  border-bottom-style: solid;
  border-bottom-width: calc(var(--space-xs) / 8);
  backdrop-filter: blur(var(--radius-md));
}

.site-header.is-scrolled {
  border-bottom-color: var(--border-hover);
}

.container {
  width: min(calc(100% - var(--space-sm) - var(--space-sm)), calc(var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl) + var(--space-2xl)));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: calc(var(--space-xl) + var(--space-xs));
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text);
  font-family: var(--font-display);
}

.brand-mark {
  display: inline-grid;
  width: calc(var(--space-lg) + var(--space-xs));
  height: calc(var(--space-lg) + var(--space-xs));
  place-items: center;
}

.brand-mark svg {
  display: block;
  width: 100%;
  height: 100%;
}

.brand-name-sub {
  color: var(--accent2);
}

.nav-toggle {
  display: none;
  width: calc(var(--space-lg) + var(--space-xs));
  height: calc(var(--space-lg) + var(--space-xs));
  place-items: center;
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
  border-style: solid;
  border-width: calc(var(--space-xs) / 8);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: var(--space-md);
  height: calc(var(--space-xs) / 4);
  background: currentColor;
  content: "";
}

.nav-toggle span::before {
  transform: translateY(calc(var(--space-xs) * -1));
}

.nav-toggle span::after {
  transform: translateY(calc(var(--space-xs) - (var(--space-xs) / 4)));
}

.nav-list {
  display: flex;
  align-items: center;
  gap: calc(var(--space-xs) / 2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-link {
  display: inline-flex;
  min-height: calc(var(--space-lg) + var(--space-xs));
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  color: var(--mid);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.is-active,
.nav-link[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-dim);
}

.nav-cta {
  margin-left: var(--space-xs);
}

.hero {
  position: relative;
  padding: var(--space-2xl) 0 var(--space-xl);
  background: linear-gradient(160deg, var(--ink2), var(--ink));
  border-bottom-color: var(--border);
  border-bottom-style: solid;
  border-bottom-width: calc(var(--space-xs) / 8);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(640px 420px at 82% 12%, rgba(0, 98, 173, 0.28), transparent 62%),
    radial-gradient(520px 380px at 8% 95%, rgba(0, 98, 173, 0.14), transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44'%3E%3Cpath d='M44 0H0v44' fill='none' stroke='rgba(255,255,255,0.055)'/%3E%3C/svg%3E");
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 65% 20%, black 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 90% at 65% 20%, black 25%, transparent 78%);
  pointer-events: none;
}

.hero-aurora {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(58px);
  opacity: 0.85;
  mix-blend-mode: screen;
  will-change: transform;
}

.aurora-blob-1 {
  top: -14%;
  right: 4%;
  width: 46%;
  min-width: 360px;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 35% 35%, rgba(28, 150, 255, 1), rgba(0, 120, 210, 0) 66%);
  animation: aurora-a 15s ease-in-out infinite;
}

.aurora-blob-2 {
  bottom: -22%;
  left: -6%;
  width: 44%;
  min-width: 340px;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(64, 156, 235, 0.9), rgba(46, 134, 214, 0) 64%);
  animation: aurora-b 18s ease-in-out infinite;
}

.aurora-blob-3 {
  top: 20%;
  left: 26%;
  width: 34%;
  min-width: 280px;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(120, 200, 255, 0.7), rgba(127, 178, 222, 0) 66%);
  animation: aurora-c 13s ease-in-out infinite;
}

.aurora-blob-4 {
  top: 6%;
  right: 30%;
  width: 26%;
  min-width: 220px;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(0, 110, 190, 0.95), rgba(0, 78, 134, 0) 68%);
  animation: aurora-d 16s ease-in-out infinite;
}

.hero .container {
  position: relative;
  z-index: 3;
}

.text-gradient {
  background: linear-gradient(100deg, #4B93CE, #7FB2DE);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1,
.hero h2 {
  color: var(--ink-text);
}

.hero p,
.hero .lead {
  color: var(--ink-mid);
}

.hero .eyebrow {
  color: var(--accent-soft);
}

.hero .button-secondary {
  color: var(--ink-text);
  background: transparent;
  border-color: var(--ink-border);
}

.hero .button-secondary:hover {
  border-color: var(--accent-soft);
}

.hero-compact {
  padding-bottom: var(--space-lg);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(calc(var(--space-2xl) + var(--space-2xl) + var(--space-2xl)), 0.9fr);
  gap: var(--space-xl);
  align-items: center;
}

.hero-copy {
  display: grid;
  gap: var(--space-md);
  justify-items: start;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: calc(var(--space-xs) / 2) var(--space-sm);
  color: var(--ink-text);
  background: rgba(0, 98, 173, 0.18);
  border-color: var(--ink-border);
  border-style: solid;
  border-width: calc(var(--space-xs) / 8);
  border-radius: 999px;
  font-size: var(--space-sm);
}

.hero-badge-dot {
  width: var(--space-xs);
  height: var(--space-xs);
  background: var(--accent-soft);
  border-radius: 999px;
}

.hero-note {
  color: var(--ink-mid);
  font-size: var(--space-sm);
  opacity: 0.85;
}

.system-map {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--ink-surface);
  border-color: var(--ink-border);
  border-style: solid;
  border-width: calc(var(--space-xs) / 8);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px -24px rgba(11, 19, 30, 0.55);
}

.hero .system-map {
  box-shadow: 0 0 90px rgba(0, 98, 173, 0.28), 0 24px 64px -24px rgba(0, 0, 0, 0.6);
}

.system-map-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
}

.system-node {
  min-height: calc(var(--space-xl) + var(--space-md));
  padding: var(--space-sm);
  background: var(--ink2);
  border-color: var(--ink-border);
  border-style: solid;
  border-width: calc(var(--space-xs) / 8);
  border-radius: var(--radius-md);
}

.system-node strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--ink-text);
}

.system-node p {
  color: var(--ink-mid);
}

/* "Our approach" flow card (About) — icons, step numbers, hover + entrance motion */
.approach-map .system-node {
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.approach-map .system-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent-soft), var(--accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.28s ease;
}

.approach-map .system-node:hover {
  transform: translateY(-3px);
  background: var(--ink-surface);
  border-color: var(--accent-soft);
  box-shadow: 0 18px 40px -20px rgba(0, 98, 173, 0.55);
}

.approach-map .system-node:hover::before {
  transform: scaleY(1);
}

.approach-node-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.approach-ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: calc(var(--space-lg) + var(--space-xs));
  height: calc(var(--space-lg) + var(--space-xs));
  color: var(--accent-soft);
  background: rgba(0, 98, 173, 0.16);
  border: calc(var(--space-xs) / 8) solid var(--ink-border);
  border-radius: var(--radius-sm);
  animation: approach-ic-pulse 3.6s ease-in-out infinite;
  transition: transform 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.approach-ic svg {
  width: 55%;
  height: 55%;
}

.approach-map .system-node:hover .approach-ic {
  color: #fff;
  background: var(--accent);
  transform: scale(1.08);
}

.approach-step {
  font-family: var(--font-display);
  font-size: var(--space-lg);
  line-height: 1;
  color: rgba(169, 182, 201, 0.28);
  transition: color 0.2s ease;
}

.approach-map .system-node:hover .approach-step {
  color: rgba(169, 182, 201, 0.55);
}

/* staggered scroll-reveal for the three steps (backwards fill keeps hover transform free) */
.approach-map.is-visible .system-node {
  animation: approach-in 0.55s ease backwards;
}

.approach-map.is-visible .system-node:nth-child(2) {
  animation-delay: 0.12s;
}

.approach-map.is-visible .system-node:nth-child(3) {
  animation-delay: 0.24s;
}

/* staggered idle pulse travels down the steps */
.approach-map .system-node:nth-child(2) .approach-ic {
  animation-delay: 1.2s;
}

.approach-map .system-node:nth-child(3) .approach-ic {
  animation-delay: 2.4s;
}

.section {
  padding: var(--space-2xl) 0;
}

.section-muted {
  background:
    radial-gradient(900px 420px at 92% -10%, rgba(0, 98, 173, 0.06), transparent 60%),
    radial-gradient(700px 380px at 4% 110%, rgba(0, 98, 173, 0.05), transparent 55%),
    var(--bg2);
  border-block-color: var(--border);
  border-block-style: solid;
  border-block-width: calc(var(--space-xs) / 8);
}

.section-dark {
  color: var(--ink-text);
  background: var(--ink);
}

.section-dark h2,
.section-dark h3 {
  color: var(--ink-text);
}

.section-dark p {
  color: var(--ink-mid);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(calc(var(--space-2xl) + var(--space-2xl) + var(--space-md)), 0.58fr);
  gap: var(--space-lg);
  align-items: end;
  margin-bottom: var(--space-lg);
}

.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(calc(var(--space-2xl) + var(--space-2xl) + var(--space-2xl)), 1.1fr);
  gap: var(--space-xl);
  align-items: start;
}

.site-footer {
  color: var(--ink-mid);
  background:
    radial-gradient(720px 280px at 50% 0%, rgba(0, 98, 173, 0.14), transparent 65%),
    var(--ink);
  border-top-color: var(--ink-border);
  border-top-style: solid;
  border-top-width: calc(var(--space-xs) / 8);
}

.site-footer .brand {
  color: var(--ink-text);
}

.site-footer .brand-name-sub {
  color: var(--accent-soft);
}

.site-footer .brand-mark {
  --mark-line: #F8FAFC;
  --mark-top: #2E86D6;
  --mark-right: #33415A;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(calc(var(--space-2xl) + var(--space-2xl)), 1.25fr) repeat(3, minmax(calc(var(--space-2xl) + var(--space-lg)), 0.7fr));
  gap: var(--space-lg);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-grid p,
.footer-grid a,
.footer-bottom {
  color: var(--ink-mid);
}

.footer-grid a:hover {
  color: var(--white);
}

.footer-location {
  margin-top: var(--space-xs);
  font-size: var(--space-sm);
  opacity: 0.75;
}

.footer-grid h2 {
  margin-bottom: var(--space-sm);
  color: var(--ink-text);
  font-size: var(--space-sm);
}

.footer-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-grid li {
  margin-bottom: var(--space-xs);
}

.footer-bottom {
  padding: var(--space-sm) 0 var(--space-md);
  border-top-color: var(--ink-border);
  border-top-style: solid;
  border-top-width: calc(var(--space-xs) / 8);
}

@media (max-width: 980px) {
  .hero-grid,
  .section-heading,
  .split {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  body.nav-open {
    overflow: hidden;
  }

  .nav-toggle {
    display: grid;
  }

  .nav-list {
    position: fixed;
    top: calc(var(--space-xl) + var(--space-xs));
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    max-height: calc(100vh - var(--space-xl) - var(--space-xs));
    padding: var(--space-xs) var(--space-sm) var(--space-sm);
    overflow: auto;
    background: var(--bg2);
    border-bottom-color: var(--border);
    border-bottom-style: solid;
    border-bottom-width: calc(var(--space-xs) / 8);
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    min-height: calc(var(--space-lg) + var(--space-xs));
  }

  .nav-cta {
    width: 100%;
    margin-left: 0;
    margin-top: var(--space-xs);
  }

  .grid-2,
  .grid-4,
  .system-map-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: var(--space-xl);
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .brand-name {
    max-width: calc(var(--space-2xl) + var(--space-lg));
    line-height: 1.1;
  }
}