/* 领地 GEO 公共导航。内部测试/管理页面可用 data-public-nav="false" 跳过。 */
:root{--lingdi-green:#123C32;--lingdi-signal:#C8FF3D;--lingdi-paper:#F6F7F2;--lingdi-ink:#07110E;--lingdi-muted:#52615C;--lingdi-line:#D7DEDA}
.nav.lingdi-public-nav{position:sticky;top:0;z-index:40;min-height:76px;background:rgba(246,247,242,.94);border-bottom:1px solid rgba(18,60,50,.14);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.nav.lingdi-public-nav .wrap{width:min(1240px,calc(100% - 48px));min-height:76px;margin-inline:auto;display:flex;align-items:center;justify-content:space-between;gap:32px}
.lingdi-public-brand{display:flex;align-items:center;min-width:0;min-height:44px;flex:0 0 auto;text-decoration:none}
.lingdi-public-brand img{display:block;width:156px;height:auto}
.terra-brand-lockup{display:inline-flex;flex-direction:column;align-items:flex-start;justify-content:center;line-height:1;white-space:nowrap;font-family:"Helvetica Neue",Arial,sans-serif}
.terra-brand-lockup__primary{color:var(--lingdi-green);font-size:20px;font-weight:850;letter-spacing:.075em}
.terra-brand-lockup__byline{margin-top:5px;color:var(--lingdi-muted);font-size:7px;font-weight:800;letter-spacing:.16em}
.terra-brand-lockup--footer .terra-brand-lockup__primary{color:#fff;font-size:27px}
.terra-brand-lockup--footer .terra-brand-lockup__byline{color:#A9B8B3;font-size:9px}
.lingdi-public-nav .lingdi-nav-links{display:flex;align-items:center;justify-content:flex-end;gap:clamp(18px,2.3vw,34px);color:var(--lingdi-muted);font-family:"PingFang SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;font-size:14px;font-weight:700;letter-spacing:-.01em}
.lingdi-public-nav .lingdi-nav-links a{position:relative;display:inline-flex;align-items:center;min-height:44px;white-space:nowrap}
.lingdi-public-nav .lingdi-nav-links a:hover,.lingdi-public-nav .lingdi-nav-links a:focus-visible,.lingdi-public-nav .lingdi-nav-links a[aria-current="page"]{color:var(--lingdi-green)}
.lingdi-public-nav .lingdi-nav-links a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;border-radius:2px;background:var(--lingdi-signal)}
.lingdi-public-nav .lingdi-nav-links .nav-cta{min-height:44px;padding:0 16px;border-radius:999px;background:var(--lingdi-green);color:#fff}
.lingdi-public-nav .lingdi-nav-links .nav-cta:hover,.lingdi-public-nav .lingdi-nav-links .nav-cta:focus-visible{background:var(--lingdi-ink);color:#fff}
.lingdi-public-nav .lingdi-nav-links .nav-cta[aria-current="page"]{color:#fff}
.lingdi-public-nav .lingdi-nav-links .nav-cta[aria-current="page"]::after{display:none}
.lingdi-public-nav .lingdi-nav-links .nav-lang{min-width:44px;min-height:44px;padding:0 10px;border:1px solid rgba(18,60,50,.28);border-radius:999px;color:var(--lingdi-green);font-size:11px;letter-spacing:.05em;justify-content:center;text-align:center;line-height:1}
.lingdi-public-nav .lingdi-nav-links .nav-lang:hover,.lingdi-public-nav .lingdi-nav-links .nav-lang:focus-visible{border-color:var(--lingdi-green);background:#fff}
.lingdi-public-nav .lingdi-nav-links .nav-lang[aria-current="page"]::after{display:none}
.lingdi-nav-menu,.lingdi-nav-drawer{display:none}
@media(min-width:1201px) and (max-width:1500px){.nav.lingdi-public-nav .wrap{width:min(100% - 36px,1440px);gap:18px}.lingdi-public-brand img{width:132px}.lingdi-public-nav .lingdi-nav-links{gap:clamp(10px,1.35vw,20px);font-size:11px}.lingdi-public-nav .lingdi-nav-links .nav-cta{padding-inline:12px}.lingdi-public-nav-dark .lingdi-public-brand img{width:144px}.lingdi-public-nav-dark .lingdi-nav-links{font-size:9px;letter-spacing:.06em}.lingdi-public-nav-dark .lingdi-nav-links .nav-cta{padding-inline:12px}}
@media(max-width:1200px){.nav.lingdi-public-nav{--lingdi-mobile-nav-height:68px;min-height:68px}.nav.lingdi-public-nav .wrap{width:calc(100% - 30px);min-height:68px;gap:16px}.lingdi-public-brand img{width:132px}.terra-brand-lockup__primary{font-size:17px}.terra-brand-lockup__byline{font-size:6px}.lingdi-public-nav .lingdi-nav-links{gap:10px;font-size:13px}.lingdi-public-nav .lingdi-nav-links a:not(.nav-mobile-priority):not(.nav-cta):not(.nav-lang){display:none}}
@media(max-width:520px){.nav.lingdi-public-nav .wrap{min-height:68px}.lingdi-public-brand img{width:108px}.terra-brand-lockup__primary{font-size:14px}.terra-brand-lockup__byline{margin-top:4px;font-size:5px}.lingdi-public-nav .lingdi-nav-links{gap:7px}.lingdi-public-nav .lingdi-nav-links .nav-mobile-priority{display:none}.lingdi-public-nav .lingdi-nav-links .nav-cta{min-height:44px;padding-inline:10px;font-size:10px}.lingdi-public-nav .lingdi-nav-links .nav-lang{min-height:44px;padding-inline:8px;font-size:10px}}
@media(max-width:1200px){
  html.lingdi-nav-open,body.lingdi-nav-open{overflow:hidden;overscroll-behavior:none}
  .lingdi-nav-menu{position:relative;z-index:4;display:inline-flex;width:44px;height:44px;flex:0 0 44px;align-items:center;justify-content:center;flex-direction:column;gap:7px;padding:0;border:0;border-radius:0;color:var(--lingdi-green);background:transparent}
  .lingdi-nav-menu span{display:block;width:22px;height:1px;background:currentColor;transform-origin:center;transition:transform .28s ease,opacity .2s ease}
  .lingdi-nav-menu[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
  .lingdi-nav-menu[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}
  .nav.lingdi-public-nav.nav-menu-open{background:rgba(5,11,9,.98);border-bottom:0;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;transition:none}
  .nav.lingdi-public-nav.nav-menu-open .lingdi-nav-menu{color:#fff}
  .nav.lingdi-public-nav.nav-menu-open .lingdi-public-brand{filter:brightness(0) invert(1)}
  .nav.lingdi-public-nav.nav-menu-open .lingdi-nav-links a:not(.nav-lang){visibility:hidden}
  .nav.lingdi-public-nav.nav-menu-open .lingdi-nav-links .nav-lang{visibility:visible;color:#fff;border-color:rgba(255,255,255,.38)}
  .lingdi-nav-drawer{position:fixed;inset:var(--lingdi-mobile-nav-height,68px) 0 0;z-index:3;display:flex;min-width:0;overflow-y:auto;overscroll-behavior:contain;counter-reset:lingdi-mobile-nav;flex-direction:column;justify-content:center;gap:clamp(18px,4.5vh,38px);padding:clamp(28px,7vh,72px) max(24px,7vw) 54px;border:0;border-radius:0;background:radial-gradient(circle at 82% 18%,rgba(46,123,103,.24),transparent 34%),rgba(5,11,9,.98);box-shadow:none;backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px)}
  .lingdi-nav-drawer[hidden]{display:none}
  .lingdi-nav-drawer a{counter-increment:lingdi-mobile-nav;display:grid;grid-template-columns:38px 1fr;min-height:48px;align-items:center;padding:0;border:0;border-radius:0;background:transparent;color:rgba(255,255,255,.92);font-size:clamp(24px,7vw,42px);font-weight:760;letter-spacing:-.035em;line-height:1.08;text-decoration:none}
  .lingdi-nav-drawer a::before{content:"0" counter(lingdi-mobile-nav);align-self:start;padding-top:.48em;color:#C8FF3D;font:700 9px/1 "SFMono-Regular",Consolas,monospace;letter-spacing:.08em}
  .lingdi-nav-drawer a:hover,.lingdi-nav-drawer a:focus-visible,.lingdi-nav-drawer a[aria-current="page"]{background:transparent;color:#C8FF3D}
}
@media(max-width:560px){.lingdi-public-nav .lingdi-nav-links .nav-cta{display:none}}

/* Immersive homepage navigation. All other public pages keep the light bar above. */
.nav.lingdi-public-nav.lingdi-public-nav-dark{position:fixed;inset:0 0 auto;z-index:80;background:linear-gradient(180deg,rgba(7,17,14,.72),rgba(7,17,14,0));border-bottom:0;backdrop-filter:none;-webkit-backdrop-filter:none;transition:background .35s ease,backdrop-filter .35s ease}
.nav.lingdi-public-nav.lingdi-public-nav-dark.nav-scrolled:not(.nav-menu-open){background:rgba(7,17,14,.9);box-shadow:0 1px 0 rgba(255,255,255,.1);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.nav.lingdi-public-nav.lingdi-public-nav-dark .wrap{width:min(1600px,calc(100% - 80px));min-height:88px}
.lingdi-public-nav-dark .lingdi-public-brand img{width:174px}
.lingdi-public-nav-dark .terra-brand-lockup__primary{color:#fff;font-size:22px;letter-spacing:.09em}
.lingdi-public-nav-dark .terra-brand-lockup__byline{color:rgba(255,255,255,.66)}
.lingdi-public-nav-dark .lingdi-nav-links{color:rgba(255,255,255,.82);font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:11px;letter-spacing:.09em;text-transform:uppercase}
.lingdi-public-nav-dark .lingdi-nav-links a:hover,.lingdi-public-nav-dark .lingdi-nav-links a:focus-visible,.lingdi-public-nav-dark .lingdi-nav-links a[aria-current="page"]{color:#fff}
.lingdi-public-nav-dark .lingdi-nav-links .nav-cta{min-height:44px;padding:0 18px;border:1px solid rgba(255,255,255,.72);border-radius:2px;background:transparent;color:#fff;transition:background .2s ease,color .2s ease,border-color .2s ease}
.lingdi-public-nav-dark .lingdi-nav-links .nav-cta:hover,.lingdi-public-nav-dark .lingdi-nav-links .nav-cta:focus-visible{border-color:#C8FF3D;background:#C8FF3D;color:#07110E}
.lingdi-public-nav-dark .lingdi-nav-links .nav-lang{border-color:rgba(255,255,255,.4);border-radius:2px;color:#fff}
.lingdi-public-nav-dark .lingdi-nav-links .nav-lang:hover,.lingdi-public-nav-dark .lingdi-nav-links .nav-lang:focus-visible{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
@media(max-width:1200px){.lingdi-public-nav-dark .lingdi-nav-menu{color:#fff}.lingdi-public-nav-dark .lingdi-nav-drawer{border:0}.lingdi-public-nav-dark .lingdi-nav-drawer a{color:rgba(255,255,255,.92)}.lingdi-public-nav-dark .lingdi-nav-drawer a:hover,.lingdi-public-nav-dark .lingdi-nav-drawer a:focus-visible{background:transparent;color:#C8FF3D}}
@media(max-width:1200px){.nav.lingdi-public-nav.lingdi-public-nav-dark{--lingdi-mobile-nav-height:76px}.nav.lingdi-public-nav.lingdi-public-nav-dark .wrap{width:calc(100% - 40px);min-height:76px}.lingdi-public-nav-dark .lingdi-public-brand img{width:142px}.lingdi-public-nav-dark .lingdi-nav-links a:not(.nav-cta):not(.nav-lang){display:none}}
@media(max-width:520px){.nav.lingdi-public-nav.lingdi-public-nav-dark{--lingdi-mobile-nav-height:68px}.nav.lingdi-public-nav.lingdi-public-nav-dark .wrap{width:calc(100% - 24px);min-height:68px}.lingdi-public-nav-dark .lingdi-public-brand img{width:108px}.lingdi-public-nav-dark .terra-brand-lockup__primary{font-size:14px}.lingdi-public-nav-dark .terra-brand-lockup__byline{font-size:5px}.lingdi-public-nav-dark .lingdi-nav-links .nav-cta{min-height:44px;padding-inline:9px;font-size:9px}.lingdi-public-nav-dark .lingdi-nav-links .nav-lang{display:inline-flex;min-height:44px}}
@media(max-width:1200px){.nav.lingdi-public-nav.lingdi-public-nav-dark.nav-menu-open{background:rgba(5,11,9,.98);box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;transition:none}}

/* More service entries stay reachable on shorter mobile screens. */
@media(max-width:1200px){.lingdi-nav-drawer{justify-content:flex-start;gap:clamp(14px,3vh,26px);padding-top:28px;padding-bottom:40px}.lingdi-nav-drawer a{flex:0 0 auto;font-size:clamp(22px,5.5vw,36px)}}