/* One opaque capsule surface; content keeps a stable layout while it contracts. */
:root {
  --site-header-space: 88px;
  --site-nav-clearance: 104px;
  --nav-morph-duration: 420ms;
  --nav-morph-ease: cubic-bezier(.22, 1, .36, 1);
}
:root.home-page { --site-header-space: 104px; }
:root.home-page:not(.nav-is-compact) { --site-nav-clearance: 120px; }
:root.nav-is-compact { --site-nav-clearance: 84px; }
body { padding-top: var(--site-header-space); }
:where(main[id], main [id]) { scroll-margin-top: var(--site-nav-clearance); }
.skip-link { position: fixed; z-index: 1100; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  padding-top: 0;
  border: 0;
  background: transparent;
  pointer-events: none;
  transition: padding-top var(--nav-morph-duration) var(--nav-morph-ease);
}
.home-page .site-header { padding-top: 16px; }
.site-header .header-inner {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  width: min(1152px, calc(100% - 32px));
  max-width: calc(100% - 12px);
  height: 88px;
  min-height: 88px;
  gap: 24px;
  padding: 0 16px;
  border: 0;
  border-radius: 44px;
  overflow: hidden;
  overflow: clip;
  pointer-events: auto;
  opacity: 1;
  box-shadow: 0 8px 28px rgba(38, 62, 110, 0), 0 2px 8px rgba(38, 62, 110, 0);
  transition: width var(--nav-morph-duration) var(--nav-morph-ease),
    height var(--nav-morph-duration) var(--nav-morph-ease),
    min-height var(--nav-morph-duration) var(--nav-morph-ease),
    padding var(--nav-morph-duration) var(--nav-morph-ease),
    border-radius var(--nav-morph-duration) var(--nav-morph-ease),
    gap var(--nav-morph-duration) var(--nav-morph-ease),
    box-shadow var(--nav-morph-duration) var(--nav-morph-ease);
}
.site-header .header-inner::before,
.site-header .header-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}
.site-header .header-inner::before {
  z-index: 0;
  background: #fff;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.site-header .nav-feedback-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  overflow: hidden;
  overflow: clip;
  pointer-events: none;
}
.site-header .nav-feedback-layer::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(ellipse 150px 74px at var(--nav-glow-x, 50%) var(--nav-glow-y, 50%),
    rgba(var(--cursor-rgb, 114, 212, 161), .4),
    rgba(var(--cursor-rgb, 114, 212, 161), .14) 48%, transparent 78%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease-out;
}
.site-header .header-inner.is-lit .nav-feedback-layer::before { opacity: 1; }
.site-header .header-inner::after {
  z-index: 2;
  background: rgba(255, 255, 255, .34);
  opacity: 1;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
@supports not ((backdrop-filter: blur(8px)) or (-webkit-backdrop-filter: blur(8px))) {
  .site-header .nav-feedback-layer { filter: blur(6px); }
}
.site-header .brand,
.site-header .nav {
  position: relative;
  z-index: 3;
  opacity: 1;
}
.site-header .brand {
  flex: none;
  gap: 11px;
  color: var(--ink, #222b40);
  transition: gap var(--nav-morph-duration) var(--nav-morph-ease);
}
.site-header .brand > span {
  display: block;
  min-width: 0;
  max-width: 180px;
  overflow: hidden;
  overflow: clip;
  white-space: nowrap;
  opacity: 1;
  transition: max-width var(--nav-morph-duration) var(--nav-morph-ease);
}
.site-header .brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  transition: width var(--nav-morph-duration) var(--nav-morph-ease),
    height var(--nav-morph-duration) var(--nav-morph-ease),
    border-radius var(--nav-morph-duration) var(--nav-morph-ease);
}
.site-header .nav {
  display: flex;
  flex: 0 1 auto;
  align-items: center;
  justify-content: center;
  min-width: 0;
  width: auto;
  gap: 14px;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
  transition: gap var(--nav-morph-duration) var(--nav-morph-ease);
}
.site-header .nav::-webkit-scrollbar { display: none; }
.site-header .nav-link {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 6px 8px;
  background: transparent;
  color: #41526f;
  font-family: 'HarmonyOS Sans SC', 'HarmonyOS Sans', 'Noto Sans SC', 'DM Sans', system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  opacity: 1;
  transition: color 180ms ease-out;
}
.site-header .nav-link:hover,
.site-header .nav-link.active,
.site-header .nav-link[aria-current='page'] { color: #1e3a70; font-weight: 700; }
.site-header .nav-link:focus-visible,
.site-header .brand:focus-visible { outline: 3px solid #7292f0; outline-offset: 2px; }
.site-header .nav-link:focus-visible { outline-offset: -3px; }

.site-header.is-compact { padding-top: 12px; }
.site-header.is-compact .header-inner {
  width: min(460px, calc(100% - 32px));
  height: 56px;
  min-height: 56px;
  gap: 12px;
  padding: 6px 56px;
  border-radius: 28px;
  box-shadow: 0 8px 28px rgba(38, 62, 110, .08), 0 2px 8px rgba(38, 62, 110, .03);
}
.site-header.is-compact .brand { gap: 0; }
.site-header.is-compact .brand > span { max-width: 0; }
.site-header.is-compact .brand-mark {
  width: 30px;
  height: 30px;
}
.site-header.is-compact .nav { gap: 4px; }

/* Keep one column on phones: the brand row folds away while navigation rises. */
@media (max-width: 760px) {
  :root { --site-header-space: 114px; --site-nav-clearance: 130px; }
  :root.home-page { --site-header-space: 130px; }
  :root.home-page:not(.nav-is-compact) { --site-nav-clearance: 146px; }
  .site-header .header-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    width: calc(100% - 12px);
    height: 114px;
    min-height: 114px;
    gap: 8px;
    padding: 12px;
    border-radius: 32px;
  }
  .site-header .brand {
    height: 38px;
    max-height: 38px;
    overflow: hidden;
    overflow: clip;
    visibility: visible;
    transition: height var(--nav-morph-duration) var(--nav-morph-ease),
      max-height var(--nav-morph-duration) var(--nav-morph-ease),
      gap var(--nav-morph-duration) var(--nav-morph-ease), visibility 0s;
  }
  .site-header .nav {
    flex: 0 0 44px;
    width: 100%;
    justify-content: space-between;
    gap: 4px;
  }
  .site-header .nav-link { padding: 6px; font-size: 13px; }
  .site-header.is-compact .header-inner {
    width: min(460px, calc(100% - 24px));
    height: 56px;
    min-height: 56px;
    gap: 0;
    padding: 6px 10px;
    border-radius: 28px;
  }
  .site-header.is-compact .brand {
    height: 0;
    max-height: 0;
    visibility: hidden;
    transition: height var(--nav-morph-duration) var(--nav-morph-ease),
      max-height var(--nav-morph-duration) var(--nav-morph-ease),
      gap var(--nav-morph-duration) var(--nav-morph-ease),
      visibility 0s var(--nav-morph-duration);
  }
  .site-header.is-compact .nav-link { padding: 6px 5px; }
}

/* Layout changes snap to their new geometry; scroll-driven contraction still animates. */
.site-header.is-resizing,
.site-header.is-resizing .header-inner,
.site-header.is-resizing .header-inner::before,
.site-header.is-resizing .header-inner::after,
.site-header.is-resizing .nav-feedback-layer::before,
.site-header.is-resizing .brand,
.site-header.is-resizing .brand > span,
.site-header.is-resizing .brand-mark,
.site-header.is-resizing .nav { transition: none; }

@media (hover: none), (pointer: coarse) {
  .site-header .nav-feedback-layer::before { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .site-header,
  .site-header .header-inner,
  .site-header .header-inner::before,
  .site-header .header-inner::after,
  .site-header .nav-feedback-layer::before,
  .site-header .brand,
  .site-header .brand > span,
  .site-header .brand-mark,
  .site-header .nav,
  .site-header .nav-link { transition: none; }
  .site-header .nav-feedback-layer::before { display: none; }
}