/* ==========================================================================
   顶部导航（绝对定位，77px，随首屏一起滚走）+ 底部悬浮胶囊导航
   ========================================================================== */

.site-nav::before {
  content: "";
  position: absolute;
  inset: -1px 0 auto;
  height: 220%;
  background: linear-gradient(180deg, rgba(5, 8, 7, 0.55), transparent);
  pointer-events: none;
  z-index: -1;
}

.site-nav {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: var(--z-menu);
  height: 77px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-24);
  padding-inline: var(--grid-margin);
  color: var(--c-white);
  background: transparent;
  transition: background var(--dur-fast) var(--ease-std),
    color var(--dur-fast) var(--ease-std);
}

.site-nav__brand { display: flex; align-items: center; flex: 0 0 auto; }

.site-nav__mark {
  display: block;
  height: clamp(18px, 1.7vw, 26px);
  width: auto;
}
.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.site-nav__lang,
.site-nav__login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding-inline: 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: currentColor;
  transition: background var(--dur-fast) var(--ease-std);
}
.site-nav__lang:hover,
.site-nav__login:hover { background: rgba(255, 255, 255, 0.16); }

.site-nav__globe {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  position: relative;
}
.site-nav__globe::before {
  content: "";
  position: absolute;
  inset: -1.5px 3px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
}

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding-inline: 22px;
  border-radius: 999px;
  background: var(--c-white);
  color: var(--c-primary);
  font-weight: var(--fw-medium);
  transition: background var(--dur-fast) var(--ease-std);
}
.site-nav__cta:hover { background: var(--c-mint); }

/* ---------- 底部悬浮胶囊导航 ---------- */
.pill-nav {
  position: fixed;
  left: 50%;
  bottom: calc(clamp(18px, 3svh, 30px) + env(safe-area-inset-bottom, 0px));
  z-index: var(--z-menu);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  border-radius: 999px;
  background: var(--c-primary);
  box-shadow: 0 14px 40px rgba(150, 26, 60, 0.28);
  color: var(--c-white);
}

.pill-nav__home {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  position: relative;
  flex: 0 0 auto;
}
.pill-nav__home::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 15px;
  height: 13px;
  transform: translate(-50%, -50%);
  background: currentColor;
  clip-path: polygon(50% 0, 100% 42%, 88% 42%, 88% 100%, 12% 100%, 12% 42%, 0 42%);
}

.pill-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  transition: background var(--dur-fast) var(--ease-std);
}
.pill-nav a:hover { background: rgba(255, 255, 255, 0.18); }

@media (max-width: 743px) {
  .site-nav__login { display: none; }
  .site-nav__actions { gap: 8px; }
  .site-nav { height: 64px; }
  .site-nav__lang { display: none; }
  .pill-nav a { padding: 9px 12px; }
}