/* in5.cn 通用导航栏样式（全部以 .in5- 开头，首页单独引入也不会影响原有样式） */
.in5-nav {
  --n-bg: #1E1E1E;
  --n-ink: #E0E0E0;
  --n-muted: #AAAAAA;
  --n-line: #333333;
  --n-hover: #2C2C2C;
  --n-acc: #BB86FC;
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  max-width: 100%;
  align-self: stretch;
  background: rgba(30, 30, 30, .96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--n-line);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
.in5-nav *, .in5-nav *::before, .in5-nav *::after { box-sizing: border-box; }
.in5-band { display: flex; height: 5px; }
.in5-band i { flex: 1; }
.in5-nav-inner {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.in5-brand { display: flex; min-width: 0; max-width: 100%; align-items: baseline; gap: 10px; color: var(--n-ink); text-decoration: none; white-space: nowrap; }
.in5-brand b { color: #fff; font-size: 20px; font-weight: 900; letter-spacing: .04em; }
.in5-brand small { color: var(--n-muted); font-size: 12px; }
.in5-menu { display: flex; gap: 2px; margin: 0 0 0 auto; padding: 0; list-style: none; }
.in5-grp { position: relative; }
.in5-grp > button {
  font: inherit; color: var(--n-ink); background: none; border: 0; cursor: pointer;
  padding: 18px 14px; border-radius: 0;
}
.in5-grp > button::after {
  content: ""; display: inline-block; width: 5px; height: 5px; margin: 0 0 3px 7px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); opacity: .5;
}
.in5-grp > button:hover, .in5-grp.open > button { color: var(--n-acc); }
.in5-grp.active > button { color: var(--n-acc); box-shadow: inset 0 -2px 0 var(--n-acc); }
.in5-drop {
  display: none; position: absolute; top: 100%; left: 0; min-width: 220px;
  margin: 0; padding: 6px; list-style: none;
  background: var(--n-bg); border: 1px solid var(--n-line); border-radius: 0 0 6px 6px;
  box-shadow: 0 12px 28px rgba(35, 39, 43, .10);
}
.in5-grp.open .in5-drop { display: block; }
.in5-grp:last-child .in5-drop { left: auto; right: 0; }
@media (hover: hover) and (min-width: 861px) { .in5-grp:hover .in5-drop { display: block; } }
.in5-drop a { display: block; padding: 8px 10px; border-radius: 4px; color: var(--n-ink); text-decoration: none; font-size: 14px; }
.in5-drop a span { display: block; color: var(--n-muted); font-size: 12px; margin-top: 1px; }
.in5-drop a:hover { background: var(--n-hover); }
.in5-drop a[aria-current] { color: var(--n-acc); font-weight: 600; }
.in5-nav a:focus-visible, .in5-nav button:focus-visible { outline: 2px solid var(--n-acc); outline-offset: 2px; }
.in5-toggle { display: none; }

@media (max-width: 860px) {
  .in5-nav-inner { min-height: 54px; gap: 12px; }
  .in5-toggle {
    display: block; margin-left: auto; font: inherit; font-size: 14px; color: var(--n-ink);
    background: none; border: 1px solid var(--n-line); border-radius: 4px; padding: 5px 12px; cursor: pointer;
  }
  .in5-menu {
    display: none; position: absolute; top: 100%; left: 0; right: 0; margin: 0;
    flex-direction: column; gap: 0; padding: 4px 16px 16px;
    background: var(--n-bg); border-bottom: 1px solid var(--n-line);
    max-height: calc(100vh - 60px); overflow-x: hidden; overflow-y: auto;
  }
  .in5-nav.menu-open .in5-menu { display: flex; }
  .in5-grp > button { pointer-events: none; padding: 12px 4px 4px; color: var(--n-muted); font-size: 13px; }
  .in5-grp > button::after { display: none; }
  .in5-grp.active > button { box-shadow: none; }
  .in5-drop { display: grid; grid-template-columns: 1fr 1fr; position: static; min-width: 0; padding: 0; border: 0; box-shadow: none; }
  .in5-drop a span { display: none; }
}

@media (max-width: 420px) {
  .in5-nav-inner { padding-left: 14px; padding-right: 14px; }
  .in5-brand { gap: 0; }
  .in5-brand b { font-size: 18px; }
  .in5-brand small { display: none; }
  .in5-menu { padding-left: 12px; padding-right: 12px; }
  .in5-drop { grid-template-columns: 1fr; }
}