:root {
  --navy: #10283b;
  --navy-deep: #0c2132;
  --ivory: #f4f0e7;
  --gold: #c8b58d;
  --ink: #16202a;
  --line: rgba(200,181,141,.68);
  --nav-h: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: Aptos, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: var(--nav-h);
  background: rgba(16,40,59,.985);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 5px 18px rgba(9,25,38,.13);
}

.nav-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  min-height: var(--nav-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  flex: 0 0 auto;
  color: var(--ivory);
  text-decoration: none;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  line-height: 1;
  letter-spacing: .08em;
  white-space: nowrap;
}

.brand::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  background: var(--gold);
  margin-top: 8px;
}

.primary-nav {
  margin-left: auto;
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  gap: 4px;
}

.primary-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid transparent;
  color: #fff;
  text-decoration: none;
  text-align: center;
  font-size: 12.5px;
  line-height: 1.22;
  font-weight: 600;
  letter-spacing: .012em;
  border-radius: 2px;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  background: rgba(244,240,231,.10);
  border-color: rgba(200,181,141,.45);
  outline: none;
}

.primary-nav a[aria-current="page"] {
  background: var(--ivory);
  color: var(--navy);
  border-color: var(--gold);
}

.menu-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(200,181,141,.65);
  background: transparent;
  border-radius: 2px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 21px;
  height: 2px;
  margin: 5px auto;
  background: var(--ivory);
}

.page-stage {
  width: 100%;
  padding: 26px 20px 50px;
  display: flex;
  justify-content: center;
}

.portfolio-sheet {
  width: min(100%, 900px);
  display: block;
  height: auto;
  background: var(--ivory);
  box-shadow: 0 12px 36px rgba(15,37,55,.10);
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 1180px) {
  :root { --nav-h: 70px; }
  .nav-shell { padding: 0 16px; gap: 12px; }
  .brand { font-size: 15px; }
  .primary-nav a { font-size: 11.5px; padding: 8px 8px; }
}

@media (max-width: 920px) {
  .site-header { min-height: 68px; }
  .nav-shell { min-height: 68px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
  .brand { font-size: 16px; }
  .menu-toggle { display: block; }
  .primary-nav {
    display: none;
    flex: 1 0 100%;
    width: 100%;
    margin: 0;
    padding-top: 8px;
    grid-template-columns: 1fr 1fr;
    gap: 7px;
  }
  .primary-nav.open { display: grid; }
  .primary-nav a {
    justify-content: center;
    min-height: 48px;
    font-size: 12.5px;
    padding: 9px 8px;
    border-color: rgba(200,181,141,.22);
  }
  .page-stage { padding: 14px 8px 30px; }
  .portfolio-sheet { width: 100%; box-shadow: none; }
}

@media (max-width: 520px) {
  .nav-shell { padding-left: 12px; padding-right: 12px; }
  .brand { font-size: 14px; letter-spacing: .065em; }
  .primary-nav { grid-template-columns: 1fr; }
  .page-stage { padding: 8px 0 20px; }
}