/* 御剑长歌 · 全站统一导航（仙侠气质） */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 2rem);
  background: linear-gradient(180deg, rgba(15, 14, 12, 0.82) 0%, rgba(15, 14, 12, 0.35) 70%, transparent 100%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
nav.scrolled {
  background: rgba(15, 14, 12, 0.94);
  border-bottom-color: rgba(125, 154, 122, 0.12);
}
.logo {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
}
.logo-primary {
  font-family: var(--font-display); font-size: 1.4rem;
  letter-spacing: 0.18em; line-height: 1.15;
}
.logo-sub {
  font-family: var(--font-en, var(--font-display)); font-size: 0.48rem;
  letter-spacing: 0.32em; color: var(--accent); margin-top: 0.05rem;
}
.nav-end { display: flex; align-items: center; gap: 0.65rem; }
.nav-links {
  display: flex; list-style: none; margin: 0; padding: 0;
  gap: clamp(0.35rem, 1.2vw, 1rem);
}
.nav-links a {
  color: var(--muted); text-decoration: none;
  font-size: 0.82rem; letter-spacing: 0.04em;
  padding: 0.35rem 0.15rem;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--gold); }
.nav-cta {
  flex-shrink: 0;
  padding: 0.45rem 1rem;
  font-family: inherit; font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink-deep, #0f0e0c);
  background: linear-gradient(135deg, #d4b96a, var(--gold) 50%, #a88640);
  border: 1px solid rgba(255, 240, 200, 0.18);
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(201, 169, 98, 0.3);
}
.lang-picker { position: relative; }
.lang-picker-btn {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.38rem 0.5rem; font-size: 0.72rem; font-family: inherit;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 2px; color: var(--text); cursor: pointer;
}
.lang-picker-menu {
  position: absolute; top: calc(100% + 0.35rem); right: 0;
  min-width: 7.5rem; margin: 0; padding: 0.3rem 0; list-style: none;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 2px; box-shadow: 0 12px 40px rgba(0,0,0,0.45);
}
.lang-picker-menu[hidden] { display: none; }
.lang-picker-menu li {
  padding: 0.4rem 0.85rem; font-size: 0.78rem;
  cursor: pointer; color: var(--muted);
}
.lang-picker-menu li:hover,
.lang-picker-menu li[aria-selected="true"] {
  color: var(--gold); background: rgba(201,169,98,0.06);
}
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  color: var(--text); font-size: 1rem; padding: 0.35rem 0.5rem;
  cursor: pointer; border-radius: 2px;
}
.account-widget { position: relative; flex-shrink: 0; }
.account-btn {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.38rem 0.65rem; font-size: 0.72rem; font-family: inherit;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 2px; color: var(--text); cursor: pointer;
  max-width: 9.5rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.account-btn:hover { border-color: var(--gold-dim); color: var(--gold); }
.account-login-link {
  font-size: 0.72rem; color: var(--muted); background: none; border: none;
  cursor: pointer; font-family: inherit; letter-spacing: 0.04em;
}
.account-login-link:hover { color: var(--gold); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(15, 14, 12, 0.98);
    padding: 1.25rem; border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
}