:root{
  --gold:#c8a15a; --ink:#0c0d10; --panel:rgba(12,13,16,.82);
  --line:rgba(200,161,90,.35); --txt:#f4efe6; --mut:#a99f8d;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;background:#fff;font-family:-apple-system,Inter,"SF Pro",Segoe UI,Roboto,sans-serif}
#scene{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}
#vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at center,transparent 55%,rgba(0,0,0,.28) 100%);opacity:0;transition:opacity .6s}
body.night #vignette{opacity:1}
/* loader */
#loader{position:fixed;inset:0;z-index:50;background:#0b0c0e;color:var(--txt);display:flex;align-items:center;justify-content:center;transition:opacity .7s}
#loader.done{opacity:0;pointer-events:none}
.l-inner{text-align:center;width:min(420px,86vw)}
.l-logo{font-size:64px;font-weight:800;letter-spacing:6px}.l-logo span{color:var(--gold)}
.l-sub{font-size:11px;letter-spacing:4px;color:var(--mut);margin:6px 0 22px}
.l-bar{height:2px;background:#222;border-radius:2px;overflow:hidden}#lfill{height:100%;width:5%;background:var(--gold);transition:width .3s}
#lmsg{margin-top:12px;font-size:12px;color:var(--mut);letter-spacing:1px}
/* top */
#topbar{position:fixed;top:0;left:0;right:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;pointer-events:none}
.brand{display:flex;gap:10px;align-items:center;background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(12px);border-radius:14px;padding:8px 14px 8px 8px;pointer-events:auto}
.b-mark{width:34px;height:34px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#f3d896,var(--gold) 60%,#6b4d1c);display:flex;align-items:center;justify-content:center;color:#111;font-size:18px}
.b-name{color:var(--txt);font-size:13px;font-weight:700;letter-spacing:2px}.b-name span{color:var(--gold)}
.b-sub{font-size:10px;color:var(--mut);letter-spacing:1px}
.top-actions{display:flex;gap:8px;pointer-events:auto}
.pill{background:var(--panel);color:var(--txt);border:1px solid var(--line);border-radius:999px;padding:9px 16px;font-size:12px;letter-spacing:1px;cursor:pointer;backdrop-filter:blur(12px)}
.pill:hover{border-color:var(--gold)}
.pill.ghost{opacity:.85}
/* spec */
#spec{position:fixed;top:76px;right:14px;z-index:10;width:288px;max-width:82vw;background:var(--panel);border:1px solid var(--line);border-radius:18px;color:var(--txt);padding:20px;backdrop-filter:blur(16px);transition:transform .45s cubic-bezier(.2,.9,.25,1),opacity .3s}
#spec:not(.open){transform:translateX(115%);opacity:0;pointer-events:none}
#spec h2{font-size:26px;letter-spacing:1px}#spec .tag{color:var(--gold);font-size:11px;letter-spacing:2px;margin:2px 0 12px}
#specClose{position:absolute;top:8px;right:12px;background:none;border:none;color:var(--mut);font-size:22px;cursor:pointer}
.grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-bottom:12px}
.grid div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:8px 4px;text-align:center}
.grid b{display:block;font-size:16px;color:#fff}.grid span{font-size:9px;color:var(--mut)}
.feat{list-style:none;font-size:11.5px;line-height:1.9;color:#ddd6c6;margin-bottom:10px}
.feat li::before{content:"◆ ";color:var(--gold);font-size:8px}
.hint{font-size:11px;color:var(--mut);line-height:1.7;border-top:1px solid rgba(255,255,255,.1);padding-top:10px}
/* tooltip */
#tooltip{position:fixed;z-index:20;pointer-events:none;background:rgba(8,9,11,.9);color:#ffe9bd;border:1px solid var(--gold);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;padding:7px 12px;border-radius:999px;transform:translate(-50%,-140%);opacity:0;transition:opacity .15s;white-space:nowrap}
/* cabin */
#cabinBanner{position:fixed;top:74px;left:50%;transform:translateX(-50%);z-index:10;background:rgba(8,9,11,.85);border:1px solid var(--gold);color:#ffe9bd;font-size:11px;letter-spacing:2px;padding:9px 8px 9px 16px;border-radius:999px;display:flex;gap:12px;align-items:center}
#cabinBanner.hidden{display:none}
#cabinBanner button{background:var(--gold);border:none;border-radius:999px;padding:6px 12px;cursor:pointer;font-size:11px}
/* dock */
#dock{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:8px;background:var(--panel);border:1px solid var(--line);padding:10px;border-radius:18px;backdrop-filter:blur(16px);max-width:96vw;overflow-x:auto}
#dock button{background:rgba(255,255,255,.06);color:var(--txt);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:11px 15px;font-size:12px;letter-spacing:.5px;cursor:pointer;white-space:nowrap;transition:.2s}
#dock button:hover{border-color:var(--gold);color:#ffe9bd}
#dock button.active{background:var(--gold);color:#111;border-color:var(--gold);font-weight:700}
#btnEngine.running{background:#1d7a35;border-color:#1d7a35;color:#fff}
#toast{position:fixed;bottom:84px;left:50%;transform:translateX(-50%) translateY(10px);z-index:20;background:rgba(8,9,11,.92);border:1px solid var(--gold);color:#ffe9bd;padding:10px 18px;border-radius:12px;font-size:12px;letter-spacing:1px;opacity:0;transition:.3s;pointer-events:none;max-width:90vw;text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:640px){
  #spec{top:auto;bottom:86px;right:8px;left:8px;width:auto;padding:14px}
  .b-sub{display:none}
  #dock button{padding:10px 11px;font-size:11px}
}