:root{
  --bg:#E8F3F4;--deep:#D4E8EA;--panel:#F7FCFC;--sub:#DCECEE;--title:#0A3D4A;--text:#1E4A54;--muted:#4A737C;--soft:#7A8F93;--lake:#1A6B7A;--green:#2E9A8F;--night:#08222A;--gold:#D4B46A;--white:#F2F7F8;--mist:#7DB8B0;--border:rgba(10,61,74,.16);--em-border:rgba(46,154,143,.40);--shadow:0 16px 36px rgba(8,34,42,.10);--max:1220px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}body.layer-open{overflow:hidden}a{color:inherit;text-decoration:none}a,button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;height:auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:9999;background:var(--night);color:var(--white);padding:8px 14px;border-radius:8px}.skip-link:focus{top:8px}.star-rail{position:fixed;z-index:1200;top:0;left:0;right:0;height:22px;background:var(--night);color:var(--white);font-size:12px}.top-inner,.dome-inner,.screen-tabs-inner,.section-inner,.footer-inner{width:min(calc(100% - 32px),var(--max));margin:0 auto}.top-inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:16px}.rail-brand{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rail-search{position:relative;height:22px;border:0;background:transparent;color:var(--white);padding:0 4px;min-width:44px}.rail-search::after{content:"";position:absolute;inset:-11px -8px}.rail-search:hover,.rail-search:focus-visible{text-decoration:underline;outline:2px solid var(--gold);outline-offset:-2px}.dome-bar{position:fixed;z-index:1190;top:22px;left:0;right:0;height:64px;background:var(--white);border-bottom:1px solid rgba(26,107,122,.28)}.dome-inner{height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{justify-self:start;display:flex;min-width:0;align-items:center;min-height:44px}.brand-logo{height:34px;max-width:220px;object-fit:contain;object-position:left 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a:focus-visible{color:var(--gold);outline:none;text-decoration:underline}.footer-note{max-width:880px;margin:22px 0 6px;color:#d6e7e9}.copyright{font-size:13px;color:#a9c1c5;margin:0}.overlay{position:fixed;z-index:1300;inset:0;background:rgba(8,34,42,.45);opacity:0;pointer-events:none;transition:opacity .2s}.overlay.is-active{opacity:1;pointer-events:auto}.star-map,.search-layer{position:fixed;z-index:1400;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .2s,transform .2s}.star-map{top:86px;background:var(--white);max-height:68vh;overflow:auto;border-bottom:1px solid var(--em-border);box-shadow:var(--shadow);transform:translateY(-12px)}.star-map.is-open,.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translateY(0)}.map-head,.map-groups{width:min(calc(100% - 32px),var(--max));margin:0 auto}.map-head{height:58px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid 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a:focus-visible{background:var(--lake);color:var(--white);outline:none}.search-empty{color:var(--muted);margin:12px 0 0}.mobile-bottom{display:none}.muted{color:var(--muted)}.gold-line{border-top:1px solid rgba(212,180,106,.6);padding-top:18px}.section-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
@media (max-width:980px){.constellation-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.constellation-card:nth-child(n){transform:none}.feature-grid,.page-hero-grid,.app-grid{grid-template-columns:1fr}.four-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.five-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.term-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.map-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.index-row{grid-template-columns:120px 1fr}.index-row a{grid-column:2}.app-visual .app-shot{max-width:60%}}
@media (max-width:720px){body{line-height:1.75}.star-rail{height:22px}.dome-bar{top:22px;height:64px}.dome-inner{height:64px;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:6px}.brand-logo{height:28px;max-width:120px}.brand-text{font-size:17px}.map-toggle,.app-link{min-height:44px;padding:0 10px;font-size:14px}.app-link{justify-self:end}.screen-tabs{display:none}.site-main{padding-top:86px}.section{padding:34px 0}.page-hero{padding:28px 0 20px}.hero-image-slot{min-height:180px}.constellation-grid,.four-grid,.five-grid,.split-grid,.term-grid,.quote-grid{grid-template-columns:1fr}.constellation-image{height:190px}.number-item{grid-template-columns:48px 1fr}.app-visual{min-height:220px;flex-direction:column}.app-visual .app-shot{max-width:90%;max-height:360px}.map-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.star-map{top:86px;max-height:78vh}.search-layer{top:86px}.map-head{height:56px}.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer{padding-bottom:88px}.mobile-bottom{position:fixed;z-index:1100;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));min-height:50px;padding-bottom:env(safe-area-inset-bottom);background:var(--white);border-top:1px solid var(--border);box-shadow:0 -7px 22px rgba(8,34,42,.08)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--title);font-size:13px;font-weight:800}.mobile-bottom a.is-current{background:var(--lake);color:var(--white)}.mobile-bottom a:focus-visible{outline:2px solid var(--gold);outline-offset:-3px}.index-row{grid-template-columns:1fr;gap:8px}.index-row a{grid-column:auto}.content-image-slot{min-height:190px}.page-hero .content-image-slot{min-height:190px}.page-hero .content-image-slot img{max-height:210px}}
@media (max-width:420px){.top-inner,.dome-inner,.screen-tabs-inner,.section-inner,.footer-inner,.map-head,.map-groups{width:min(calc(100% - 32px),var(--max))}.rail-brand{max-width:72vw}.brand-logo{max-width:108px}.map-toggle,.app-link{padding:0 8px;font-size:13px}.map-groups{grid-template-columns:1fr}.search-card{width:calc(100% - 24px)}.footer-groups{grid-template-columns:1fr}.hero-copy .main-line{font-size:24px}}