body{--page:#10121d;--surface:#1b1e31;--ink:#f3f2fc;--muted:#adb1ca;--accent:#b9a0ff;--line:#3b3b57;--felt:#373054;--felt-deep:#201f36;--cta:#c8b5ff;--footer:#080b14;--shell-width:1540px;font-family:Arial,sans-serif;}
.ns-arena-navigation{display:flex;justify-content:space-between;align-items:center;padding:24px 30px;border-bottom:1px solid var(--line);}
.ns-arena-main{padding:0 28px;}
.ns-signal-band{display:flex;justify-content:space-between;gap:18px;margin:24px 0;font:11px Courier New,monospace;letter-spacing:1px;}
.ns-signal-band span{color:var(--accent);}
.ns-split-stage{display:grid;grid-template-columns:240px minmax(0,1fr);gap:22px;}
.ns-briefing-pane{background:var(--surface);padding:25px 20px;border-top:4px solid var(--accent);border-radius:0 0 14px 14px;overflow:hidden;}
.ns-briefing-pane h1{font-size:38px;line-height:1.05;letter-spacing:-1.8px;}
.ns-briefing-pane [data-prologue]>p:last-child{font-size:14px;}
.ns-briefing-image{margin:30px -20px -25px;}
.ns-briefing-image img{height:260px;object-position:right;}
.ns-match-pane{min-width:0;}
.ns-split-stage[data-guide-stage]{display:block;}
.ns-split-stage[data-guide-stage] .ns-briefing-pane{display:grid;grid-template-columns:minmax(0,1fr) 34%;gap:35px;align-items:center;padding:30px;}
.ns-split-stage[data-guide-stage] .ns-briefing-image{margin:0;}
.ns-split-stage[data-guide-stage] .ns-briefing-image img{height:180px;border-radius:10px;}
@media(max-width:1100px){.ns-split-stage[data-guide-stage] .ns-briefing-pane{display:block;}}
.ns-knowledge-grid{margin:50px 0;}
.ns-knowledge-grid [data-reading]{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.ns-knowledge-grid [data-reading]>section{background:var(--surface);border:1px solid var(--line);padding:23px;border-radius:12px;margin:0;}
@media(max-width:1100px){.ns-split-stage{display:block;}.ns-briefing-pane{margin-bottom:20px;padding:22px;border-radius:12px;}.ns-briefing-image{display:none;}.ns-briefing-pane h1{font-size:36px;}.ns-knowledge-grid [data-reading]{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:600px){.ns-arena-navigation{padding:18px 14px;}.ns-arena-main{padding:0 10px;}.ns-signal-band{font-size:9px;}.ns-knowledge-grid [data-reading]{display:block;}.ns-knowledge-grid [data-reading]>section{margin-bottom:16px;}}