/* ai-kb.css */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
  --accent:#60a5fa;
  --node-source:#3b82f6;
  --node-engine:#f59e0b;
  --node-process:#8b5cf6;
  --node-output:#10b981;
  --edge:#555577;
  --flow:#3b82f6;
  --flow-alt:#f59e0b;
  --legend-source:#3b82f6;
  --legend-engine:#f59e0b;
  --legend-process:#8b5cf6;
  --legend-output:#10b981;
}

html,body{width:100%;height:100%;overflow:hidden;background:transparent;font-family:-apple-system,"Microsoft YaHei",sans-serif;color:#fff}

#hud{position:fixed;top:16px;left:16px;z-index:100;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:14px 18px;backdrop-filter:blur(16px);pointer-events:none;box-shadow:0 4px 24px rgba(255,255,255,.08)}
#hud h2{font-size:17px;font-weight:700;color:#fff;margin-bottom:4px}
#hud p{font-size:11px;color:rgba(255,255,255,.75);line-height:1.5}
#hud a{color:rgba(255,255,255,.85);font-size:12px;pointer-events:all;display:inline-block;margin-top:4px;text-decoration:none;font-weight:500}
#hud a:hover{color:#fff}

#legend{position:fixed;bottom:20px;left:16px;z-index:100;display:flex;gap:12px;font-size:10px;flex-wrap:wrap;pointer-events:none}
#legend span{display:flex;align-items:center;gap:5px;background:rgba(255,255,255,.25);padding:4px 10px;border-radius:6px;border:1px solid rgba(255,255,255,.15);color:#fff;backdrop-filter:blur(8px)}
#legend .dot{width:8px;height:8px;border-radius:50%}

#card{position:fixed;right:16px;top:50%;transform:translateY(-50%);z-index:100;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.2);border-radius:16px;padding:18px;max-width:300px;display:none;backdrop-filter:blur(16px);box-shadow:0 8px 32px rgba(255,255,255,.08)}
#card h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:6px}
#card p{font-size:12px;color:rgba(255,255,255,.8);line-height:1.5;margin-top:2px}
#card .keywords{font-size:10px;color:rgba(255,255,255,.7);margin-top:4px}
#card button{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);color:#fff;padding:6px 14px;border-radius:8px;font-size:11px;cursor:pointer;margin-top:8px;transition:all .2s}
#card button:hover{background:rgba(255,255,255,.25)}

#ad{position:fixed;bottom:50px;right:16px;z-index:200;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.15);border-radius:10px;padding:4px 10px;font-size:10px;color:rgba(255,255,255,.6);backdrop-filter:blur(8px);pointer-events:all}
#ad a{color:rgba(255,255,255,.8);text-decoration:none}