:root{
  --bg:#07090d; --panel:rgba(12,15,21,.78); --line:rgba(255,255,255,.10);
  --txt:#dfe6f2; --dim:#8a97ad; --accent:#5ec8ff; --accent2:#ffcf6b; --warn:#ff7a6b;
  --mono:"SF Mono",ui-monospace,"Cascadia Mono",Consolas,"DejaVu Sans Mono",monospace;
  --sans:"Segoe UI Variable Display","Segoe UI",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--txt);font-family:var(--sans);
  -webkit-font-smoothing:antialiased;user-select:none;touch-action:none}
#gl{position:fixed;inset:0;width:100%;height:100%;display:block}

/* ---------- boot ---------- */
#boot{position:fixed;inset:0;z-index:50;display:grid;place-items:center;
  background:radial-gradient(120% 100% at 50% 0%,#101725 0%,#05070b 70%);transition:opacity .6s ease}
#boot.done{opacity:0;pointer-events:none}
.boot-inner{text-align:center;width:min(440px,86vw)}
.boot-title{font:600 30px/1.1 var(--sans);letter-spacing:.42em;margin-left:.42em;
  background:linear-gradient(180deg,#fff,#7fb7d8);-webkit-background-clip:text;background-clip:text;color:transparent}
.boot-sub{margin-top:10px;color:var(--dim);font-size:12.5px;letter-spacing:.08em}
.boot-bar{margin:22px 0 10px;height:2px;background:rgba(255,255,255,.10);overflow:hidden;border-radius:2px}
.boot-bar i{display:block;height:100%;width:0%;background:linear-gradient(90deg,#3a86c8,#5ec8ff,#c9f0ff);
  transition:width .35s ease;box-shadow:0 0 12px #5ec8ff}
.boot-msg{color:var(--dim);font:11.5px/1.5 var(--mono);min-height:1.5em}

/* ---------- topbar ---------- */
#topbar{position:fixed;z-index:20;left:0;right:0;top:0;height:46px;display:flex;align-items:center;gap:14px;
  padding:0 12px;background:linear-gradient(180deg,rgba(5,7,11,.86),rgba(5,7,11,0));pointer-events:none}
#topbar>*{pointer-events:auto}
.brand{display:flex;align-items:baseline;gap:8px}
.brand b{font-size:14px;letter-spacing:.24em}
.brand span{color:var(--dim);font:10px var(--mono);letter-spacing:.12em}
#sceneTabs{display:flex;gap:2px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:9px;padding:3px}
#sceneTabs button{all:unset;cursor:pointer;padding:5px 15px;border-radius:7px;font-size:12.5px;color:var(--dim);
  transition:.18s;letter-spacing:.06em}
#sceneTabs button:hover{color:var(--txt);background:rgba(255,255,255,.06)}
#sceneTabs button.on{color:#05121b;background:linear-gradient(180deg,#8fdcff,#4fb8ee);font-weight:600}
.top-actions{margin-left:auto;display:flex;gap:6px;align-items:center}
.top-actions button,.top-actions select{all:unset;cursor:pointer;padding:6px 11px;border-radius:8px;font-size:12px;
  color:var(--txt);background:rgba(255,255,255,.06);border:1px solid var(--line);transition:.18s}
.top-actions select{padding:6px 8px}
.top-actions button:hover{background:rgba(94,200,255,.16);border-color:rgba(94,200,255,.4)}
.top-actions button:active{transform:translateY(1px)}
#btnStrike{color:#ffd9b0;border-color:rgba(255,160,90,.35)}
#btnStrike:hover{background:rgba(255,140,60,.2);border-color:rgba(255,160,90,.6)}

/* ---------- panel ---------- */
#panel{position:fixed;z-index:20;right:8px;top:52px;bottom:44px;width:296px;overflow-y:auto;overscroll-behavior:contain;
  background:var(--panel);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:12px;padding:6px;
  box-shadow:0 18px 50px rgba(0,0,0,.55);transition:transform .28s cubic-bezier(.4,0,.2,1),opacity .28s}
#panel.hide{transform:translateX(115%);opacity:0;pointer-events:none}
#panel::-webkit-scrollbar{width:8px}
#panel::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:8px}
.pg{border-bottom:1px solid rgba(255,255,255,.06)}
.pg:last-child{border-bottom:0}
.pg>summary{cursor:pointer;list-style:none;padding:9px 8px;font-size:12px;letter-spacing:.09em;color:var(--accent);
  display:flex;align-items:center;gap:7px}
.pg>summary::-webkit-details-marker{display:none}
.pg>summary::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px var(--accent);flex:none}
.pg[open]>summary{color:#eaf6ff}
.pg-body{padding:0 8px 10px}
.row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:4px 8px;margin:7px 0}
.row label{font-size:11.5px;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .val{font:10.5px var(--mono);color:var(--accent2);min-width:46px;text-align:right}
.row input[type=range]{grid-column:1/-1;-webkit-appearance:none;appearance:none;width:100%;height:16px;background:transparent;margin:0;cursor:ew-resize}
.row input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--accent) var(--p,0%),rgba(255,255,255,.13) var(--p,0%))}
.row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:11px;height:11px;border-radius:50%;
  background:#fff;margin-top:-4px;box-shadow:0 0 0 1px rgba(0,0,0,.5),0 0 9px rgba(94,200,255,.85)}
.row input[type=range]::-moz-range-track{height:3px;background:rgba(255,255,255,.13);border-radius:3px}
.row input[type=range]::-moz-range-thumb{width:11px;height:11px;border:0;border-radius:50%;background:#fff}
.row select{all:unset;grid-column:2;cursor:pointer;font:11px var(--mono);color:var(--accent2);
  background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:6px;padding:3px 6px}
.sw{position:relative;width:32px;height:17px;border-radius:9px;background:rgba(255,255,255,.14);cursor:pointer;transition:.2s;flex:none}
.sw::after{content:"";position:absolute;top:2px;left:2px;width:13px;height:13px;border-radius:50%;background:#fff;transition:.2s}
.sw.on{background:linear-gradient(90deg,#3f9ed4,#5ec8ff)}
.sw.on::after{left:17px}

/* ---------- stats / hint ---------- */
#stats{position:fixed;z-index:15;left:10px;bottom:38px;font:10.5px/1.65 var(--mono);color:var(--dim);
  text-shadow:0 1px 3px #000;pointer-events:none;white-space:pre}
#stats b{color:var(--accent);font-weight:500}
#stats .hi{color:var(--accent2)}
#stats .bad{color:var(--warn)}
#hint{position:fixed;z-index:15;left:0;right:0;bottom:8px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap;
  font-size:10.5px;color:var(--dim);pointer-events:none}
#hint kbd{font:10px var(--mono);background:rgba(255,255,255,.09);border:1px solid var(--line);border-bottom-width:2px;
  border-radius:4px;padding:1px 5px;margin-right:4px;color:var(--txt)}
#diag{position:fixed;z-index:60;left:0;top:0;max-width:100vw;max-height:100vh;overflow:auto;margin:0;padding:8px;
  background:#000d;color:#7dffa1;font:11px/1.45 var(--mono);white-space:pre-wrap}

/* 破坏提示飘字 */
#toast{position:fixed;z-index:25;left:50%;top:56px;transform:translateX(-50%);display:flex;flex-direction:column;gap:6px;
  align-items:center;pointer-events:none}
.toast-item{background:rgba(10,14,20,.8);border:1px solid rgba(255,160,90,.35);color:#ffd9b0;font-size:11.5px;
  padding:5px 12px;border-radius:20px;animation:tfade 2.6s ease forwards;backdrop-filter:blur(8px)}
@keyframes tfade{0%{opacity:0;transform:translateY(-8px)}12%{opacity:1;transform:none}75%{opacity:1}100%{opacity:0}}

@media (max-width:780px){
  #panel{width:min(280px,74vw);top:48px}
  .brand span{display:none}
  #hint span:nth-child(n+5){display:none}
}