/* The mobile navigation unfolds from the round menu control. */
.menu-backdrop { display: none; }

@media (max-width: 800px) {
  .menu-button {
    position: relative;
    padding: 0;
    color: var(--blue);
    border: 1px solid #cdd5ec;
    transition: color 220ms ease, background-color 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  }
  .menu-button[aria-expanded="true"] {
    color: #fff;
    background: var(--blue);
    border-color: var(--blue);
    box-shadow: 0 5px 18px #4665ff26;
  }
  .menu-glyph { position: relative; width: 19px; height: 16px; }
  .menu-glyph span {
    position: absolute;
    left: 0;
    top: 7px;
    width: 19px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 340ms cubic-bezier(.22, 1, .36, 1), opacity 180ms ease;
  }
  .menu-glyph span:nth-child(1) { transform: translateY(-6px); }
  .menu-glyph span:nth-child(2) { width: 13px; }
  .menu-glyph span:nth-child(3) { transform: translateY(6px); }
  [aria-expanded="true"] .menu-glyph span:nth-child(1) { transform: rotate(45deg); }
  [aria-expanded="true"] .menu-glyph span:nth-child(2) { opacity: 0; transform: translateX(5px); }
  [aria-expanded="true"] .menu-glyph span:nth-child(3) { transform: rotate(-45deg); }

  .menu-backdrop {
    display: block;
    position: fixed;
    inset: calc(86px + env(safe-area-inset-top, 0px)) 0 0;
    z-index: 0;
    background: linear-gradient(180deg, #14254b14, #14254b05 65%, transparent);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 240ms ease, visibility 0s 240ms;
  }
  .is-menu-open .menu-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }

  .mobile-nav {
    --menu-ease: cubic-bezier(.22, 1, .36, 1);
    top: calc(100% + 10px);
    padding: 12px 20px;
    max-height: calc(100dvh - 120px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
    overscroll-behavior: contain;
    border: 1px solid #ffffffd9;
    border-radius: 24px;
    background:
      radial-gradient(ellipse at 100% 100%, #ff96591a, transparent 65%),
      radial-gradient(ellipse at 0 0, #4665ff0d, transparent 60%),
      #fffdf9f5;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    box-shadow: 0 24px 60px -20px #172c6552, 0 6px 18px -8px #4665ff24, inset 0 0 0 1px #4665ff08;
    transform-origin: calc(100% - 22px) -32px;
    transform: translateY(-10px) scale(.96);
    clip-path: inset(0 0 100% 72% round 24px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: clip-path 260ms var(--menu-ease), transform 260ms var(--menu-ease), opacity 180ms ease, visibility 0s 260ms;
  }
  .is-menu-open .mobile-nav {
    transform: translateY(0) scale(1);
    clip-path: inset(-60px -80px -100px -80px round 24px);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: clip-path 480ms var(--menu-ease), transform 480ms var(--menu-ease), opacity 180ms ease, visibility 0s;
  }
  .mobile-nav a {
    display: grid;
    grid-template-columns: 22px minmax(0, 1fr) 34px;
    align-items: center;
    gap: 12px;
    min-height: 78px;
    padding: 18px 2px;
    color: var(--ink);
    opacity: 0;
    transform: translateY(13px);
    transition: transform 180ms ease, opacity 140ms ease, color 180ms ease;
  }
  .mobile-nav a + a { border-top: 1px solid #091a430d; }
  .is-menu-open .mobile-nav a {
    opacity: 1;
    transform: translateY(0);
    transition: transform 400ms var(--menu-ease), opacity 320ms ease, color 180ms ease;
    transition-delay: 85ms, 85ms, 0s;
  }
  .is-menu-open .mobile-nav a:nth-child(2) { transition-delay: 130ms, 130ms, 0s; }
  .is-menu-open .mobile-nav a:nth-child(3) { transition-delay: 175ms, 175ms, 0s; }
  .mobile-nav-number { color: #65749a; font-size: 12px; font-weight: 500; font-variant-numeric: tabular-nums; }
  .mobile-nav-label { font-size: clamp(19px, 5vw, 22px); line-height: 1.35; font-weight: 600; letter-spacing: -.6px; }
  .mobile-nav-arrow {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border: 1px solid #4665ff1c;
    border-radius: 50%;
    color: var(--blue);
    background: #4665ff06;
    font-size: 20px;
    line-height: 1;
    transition: color 180ms ease, background-color 180ms ease, transform 220ms ease;
  }
  .mobile-nav a:focus-visible { outline-offset: 3px; border-radius: 8px; }
  .mobile-nav a:focus-visible, .mobile-nav a:active { color: var(--blue); }
  .mobile-nav a:active .mobile-nav-arrow, .mobile-nav a:focus-visible .mobile-nav-arrow { color: #fff; background: var(--blue); transform: rotate(45deg); }
}

@media (hover: hover) and (max-width: 800px) {
  .mobile-nav a:hover { color: var(--blue); }
  .mobile-nav a:hover .mobile-nav-arrow { color: #fff; background: var(--blue); transform: rotate(45deg); }
}
@media (max-width: 380px) {
  .mobile-nav { padding-inline: 16px; }
  .mobile-nav a { gap: 8px; }
}
@media (min-width: 801px) {
  .mobile-nav { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .menu-button, .menu-glyph span, .menu-backdrop, .mobile-nav, .is-menu-open .mobile-nav,
  .mobile-nav a, .is-menu-open .mobile-nav a, .mobile-nav-arrow { transition: none; }
  .mobile-nav, .mobile-nav a { transform: none; }
}
@media print {
  .mobile-nav, .menu-backdrop, .menu-button { display: none; }
}