*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-surface);
}
img { max-width: 100%; display: block; }

a { color: inherit; }

.wrap {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--color-navy-deep);
  color: var(--color-surface);
  padding: 0.75rem 1.25rem;
  z-index: 200;
  border-radius: var(--radius-sm);
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklch, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.1rem;
}
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--color-navy-deep);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}
.brand .brand-mark {
  color: var(--color-gold-deep);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.7rem;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-navy-deep);
  margin: 4px 0;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  font-weight: 500;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--duration-fast) ease;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-navy-deep);
}
.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--color-gold);
}

.header-cta {
  display: inline-flex;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              background var(--duration-fast) ease,
              border-color var(--duration-fast) ease,
              color var(--duration-fast) ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-navy-deep);
  color: var(--color-surface);
}
.btn-primary:hover {
  background: var(--color-navy);
  transform: translateY(-1px);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}
.btn-ghost {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-navy-deep);
}
.btn-ghost:hover {
  border-color: var(--color-navy-deep);
  transform: translateY(-1px);
}
.btn-gold {
  background: var(--color-gold);
  color: var(--color-navy-deep);
}
.btn-gold:hover {
  background: var(--color-gold-deep);
  transform: translateY(-1px);
}

/* Section rhythm */
section { padding-block: var(--space-section); }
section.tight { padding-block: var(--space-lg); }

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}
.section-head .eyebrow { display: block; margin-bottom: var(--space-xs); }
.section-head h2 { margin: 0 0 var(--space-sm); }

/* Cards */
.card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px oklch(20% 0.04 260 / 0.25);
}

/* Footer */
.site-footer {
  background: var(--color-navy-deep);
  color: color-mix(in oklch, var(--color-surface) 80%, transparent);
  padding-block: var(--space-lg);
}
.site-footer a { color: var(--color-surface); text-decoration: none; }
.site-footer a:hover { color: var(--color-gold); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-lg);
}
.footer-grid h3 {
  font-size: var(--text-base);
  color: var(--color-surface);
  margin: 0 0 var(--space-sm);
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; font-size: var(--text-xs); }
.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid oklch(40% 0.02 260 / 0.4);
  font-size: var(--text-xs);
  opacity: 0.7;
}

/* Responsive nav */
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .main-nav {
    position: fixed;
    inset: 0 0 0 30%;
    background: var(--color-surface-raised);
    padding: var(--space-xl) var(--space-md);
    transform: translateX(100%);
    transition: transform var(--duration-normal) var(--ease-out-expo);
    z-index: 150;
  }
  .main-nav[data-open="true"] { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: var(--space-md); }
  .main-nav a { font-size: var(--text-lg); }
  .header-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}