/* 站群静态页（/c /tag /rank /p）顶部导航条 —— 与主站 SPA 顶部同款入口
   由 work/hgai1/add_static_nav.py 注入引用；gen_pages.py 的 page() 也已内置。 */
:root{--ease:cubic-bezier(.22,1,.36,1);--t:.3s;--t-fast:.2s}
.hgnav{position:sticky;top:0;z-index:20;background:rgba(11,13,18,.92);
  backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3);
  border-bottom:1px solid #1b2130;margin-bottom:18px}
.hgnav-in{max-width:860px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.hgnav-brand{display:flex;align-items:center;gap:8px;color:#fff;font-weight:700;font-size:16px;text-decoration:none;flex:none}
.hgnav-brand::before{content:"HG";display:grid;place-items:center;width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,#ff3d6e,#ff9a3d);font-size:10px;font-weight:800;letter-spacing:.5px}
.hgnav-menu{display:flex;gap:2px;flex:none}
.hgnav-menu a{color:#98a1b2;font-size:13.5px;padding:6px 11px;border-radius:999px;text-decoration:none;transition:var(--t) var(--ease)}
.hgnav-menu a:hover{color:#fff;background:rgba(255,255,255,.07)}
.hgnav-search{position:relative;display:flex;align-items:center;flex:1 1 200px;max-width:360px;margin-left:auto;gap:8px}
.hgnav-search input{width:100%;background:#141822;border:1px solid #212633;color:#e8eaf0;border-radius:10px;
  padding:8px 12px;outline:none;font-size:13.5px}
.hgnav-search input::placeholder{color:#6b7280}
.hgnav-search input:focus{border-color:rgba(255,61,110,.55)}
.hgnav-search button{flex:none;padding:8px 14px;border:0;border-radius:10px;cursor:pointer;
  background:linear-gradient(135deg,#ff3d6e,#ff9a3d);color:#fff;font-size:13.5px;font-weight:600}
@media(max-width:640px){
  .hgnav-menu{display:none}
  .hgnav-search{flex:1 1 100%;max-width:none;margin-left:0}
}

/* 设计系统升级（2026-10-27） */
.hgnav-menu a:focus-visible,.hgnav-search input:focus-visible,.hgnav-brand:focus-visible{outline:2px solid #ff3d6e;outline-offset:2px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition-duration:.001ms!important}}