.section-menu {
  position: fixed;
  right: max(28px, calc(env(safe-area-inset-right) + 4px));
  bottom: max(90px, calc(env(safe-area-inset-bottom) + 66px));
  z-index: 81;
  width: 46px;
  height: 46px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px) scale(.92);
  transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
}

.section-menu.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.section-menu-toggle {
  position: relative;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(171, 255, 185, .39);
  border-radius: 50%;
  color: #f1fff3;
  background: radial-gradient(circle at 30% 12%, rgba(219, 255, 225, .24), transparent 43%), linear-gradient(145deg, rgba(53, 119, 66, .79), rgba(4, 22, 11, .83));
  -webkit-backdrop-filter: blur(18px) saturate(1.55);
  backdrop-filter: blur(18px) saturate(1.55);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .27), inset 0 -7px 12px rgba(0, 0, 0, .2), 0 10px 26px rgba(0, 0, 0, .4), 0 0 18px rgba(40, 255, 95, .1);
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.section-menu-toggle:hover,
.section-menu-toggle[aria-expanded="true"] {
  border-color: rgba(92, 255, 120, .77);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .31), 0 12px 30px rgba(0, 0, 0, .47), 0 0 24px rgba(40, 255, 95, .24);
}

.section-menu-toggle svg {
  position: absolute;
  width: 20px;
  height: 20px;
  transition: opacity .17s ease, transform .17s ease;
}

.section-menu-close {
  opacity: 0;
  transform: rotate(-35deg) scale(.75);
}

.section-menu-toggle[aria-expanded="true"] .section-menu-grid {
  opacity: 0;
  transform: rotate(35deg) scale(.75);
}

.section-menu-toggle[aria-expanded="true"] .section-menu-close {
  opacity: 1;
  transform: rotate(0) scale(1);
}

.section-menu-panel {
  position: absolute;
  right: -4px;
  bottom: calc(100% + 12px);
  display: grid;
  gap: 5px;
  width: min(272px, calc(100vw - 32px));
  max-height: min(410px, calc(100dvh - 150px));
  padding: 9px;
  overflow-y: auto;
  border: 1px solid rgba(174, 255, 189, .32);
  border-radius: 25px;
  background: radial-gradient(circle at 16% 0%, rgba(112, 205, 131, .27), transparent 44%), linear-gradient(145deg, rgba(25, 60, 34, .94), rgba(5, 17, 10, .94) 72%);
  -webkit-backdrop-filter: blur(28px) saturate(1.5);
  backdrop-filter: blur(28px) saturate(1.5);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .19), 0 24px 60px rgba(0, 0, 0, .55), 0 0 38px rgba(40, 255, 95, .12);
}

.section-menu-panel[hidden] { display: none; }

.section-menu-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 45px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, .045);
  border-radius: 16px;
  color: #dceee0;
  background: rgba(255, 255, 255, .035);
  font-size: 13px;
  font-weight: 750;
  line-height: 1.2;
  text-decoration: none;
  transition: border-color .18s ease, background .18s ease, color .18s ease;
}

.section-menu-link:hover,
.section-menu-link[aria-current="location"] {
  border-color: rgba(113, 255, 138, .34);
  color: #fff;
  background: radial-gradient(circle at 15% 0%, rgba(130, 255, 148, .17), transparent 70%), rgba(40, 255, 95, .1);
  text-decoration: none;
}

.section-menu-number {
  display: grid;
  flex: none;
  place-items: center;
  width: 27px;
  height: 27px;
  border: 1px solid rgba(74, 229, 103, .24);
  border-radius: 10px;
  color: #83ec98;
  background: rgba(40, 255, 95, .09);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.section-menu-link[aria-current="location"] .section-menu-number {
  border-color: rgba(95, 255, 121, .57);
  color: #c5ffd0;
  background: rgba(40, 255, 95, .2);
  box-shadow: 0 0 13px rgba(40, 255, 95, .16);
}

.section-menu-link-text { flex: 1; min-width: 0; }

.section-menu-link::after {
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(215, 255, 222, .25);
  content: '';
}

.section-menu-link[aria-current="location"]::after {
  background: #28ff5f;
  box-shadow: 0 0 10px #28ff5f;
}

.section-menu-toggle:focus-visible,
.section-menu-link:focus-visible {
  outline: 2px solid #28ff5f;
  outline-offset: 3px;
}

@media (max-width: 600px) {
  .section-menu {
    right: max(18px, calc(env(safe-area-inset-right) + 2px));
    bottom: max(76px, calc(env(safe-area-inset-bottom) + 60px));
    width: 44px;
    height: 44px;
  }

  .section-menu-toggle { width: 44px; height: 44px; }
  .section-menu-panel { right: -2px; }
}

@media (prefers-reduced-motion: reduce) {
  .section-menu,
  .section-menu-toggle,
  .section-menu-toggle svg,
  .section-menu-link { transition: none; }
  html { scroll-behavior: auto; }
}