.consonant-back-top {
  position: fixed;
  right: max(24px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  z-index: 90;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  padding: 0;
  border: 1px solid rgba(170, 251, 220, .5);
  border-radius: 50%;
  background: rgba(20, 16, 40, .94);
  color: #aafbdc;
  box-shadow: 0 6px 24px rgba(9, 6, 19, .25);
  backdrop-filter: blur(12px);
  cursor: pointer;
  touch-action: manipulation;
  transition: background .2s, transform .2s;
}
.consonant-back-top svg { display: block; pointer-events: none; }
.consonant-back-top:hover { background: #5545a9; transform: translateY(-3px); }
.consonant-back-top:focus-visible { outline: 3px solid #aafbdc; outline-offset: 4px; }
body:has(.consonant-shell) .consonant-back-top { bottom: max(112px, calc(env(safe-area-inset-bottom) + 96px)); z-index: 65; }
@media (max-width: 640px) {
  .consonant-back-top { right: max(16px, env(safe-area-inset-right)); bottom: max(18px, env(safe-area-inset-bottom)); width: 48px; height: 48px; }
}
@media (prefers-reduced-motion: reduce) {
  .consonant-back-top { transition: none; }
}

.consonant-mobile-header { display: none; }
@media (max-width: 800px) {
  html { scroll-behavior: auto; scroll-padding-top: 86px; }
  .has-consonant-mobile-nav .cv-nav,
  .has-consonant-mobile-nav .site-nav,
  .has-consonant-mobile-nav .site-header { display: none; }
  .consonant-mobile-header { position: fixed; inset: 0 0 auto; z-index: 1000; height: calc(74px + env(safe-area-inset-top, 0px)); padding: env(safe-area-inset-top, 0px) 20px 0; display: flex; align-items: center; justify-content: space-between; background: #141027; color: #f5f1ff; border-bottom: 1px solid #5545a9; font-family: Inter, Arial, sans-serif; box-sizing: border-box; }
  .consonant-mobile-brand { color: #f5f1ff; font-size: 23px; font-weight: 700; letter-spacing: -.8px; text-decoration: none; }
  .consonant-mobile-brand span { color: #aafbdc; }
  .consonant-menu-toggle { display: flex; align-items: center; gap: 10px; min-width: 88px; min-height: 44px; padding: 8px 10px; border: 1px solid #8273c3; border-radius: 7px; background: transparent; color: #aafbdc; font: inherit; font-size: 14px; cursor: pointer; }
  #consonant-mobile-menu { position: absolute; top: 100%; left: 0; right: 0; max-height: calc(100svh - 100px); overflow-y: auto; overscroll-behavior: contain; padding: 12px 20px 24px; background: #141027; border-bottom: 1px solid #8273c3; box-shadow: 0 15px 25px #14102755; }
  #consonant-mobile-menu[hidden] { display: none; }
  #consonant-mobile-menu a { display: flex; align-items: center; min-height: 46px; padding: 8px 12px; color: #eee8ff; text-decoration: none; font-size: 16px; border-radius: 5px; }
  #consonant-mobile-menu a[aria-current="page"] { background: #5545a9; color: #aafbdc; }
  #consonant-mobile-menu a:last-child { margin-top: 12px; background: #aafbdc; color: #141027; font-weight: 700; }
  .consonant-mobile-header :focus-visible { outline: 2px solid #aafbdc; outline-offset: 3px; }
}

/* Supplied full-color header mark; retain its transparent canvas and proportions. */
.cv-nav .cv-brand img,
.site-nav .wordmark img,
.site-header .brand-logo {
  display: block;
  width: 76px;
  height: 76px;
  flex: 0 0 76px;
  object-fit: contain;
  filter: none;
}
@media (max-width: 800px) {
  .consonant-mobile-brand { display: flex; align-items: center; gap: 8px; font-size: 20px; }
  .consonant-mobile-brand img { display: block; width: 60px; height: 60px; flex: 0 0 60px; object-fit: contain; }
  .consonant-mobile-brand .consonant-mobile-name { color: #f5f1ff; }
}