:root{
  --bg:#020610; --panel:#0a1424ee; --panel-line:#1e3a5f; --ink:#e8f1fb; --dim:#93a9c4;
  --accent:#4da3ff; --green:#37b24d; --ocean:#1a5fa6; --orange:#ff922b; --yellow:#ffd43b; --red:#ff6b6b;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:ui-sans-system,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;}
body{background:
  radial-gradient(1200px 700px at 78% -10%, #0b2447 0%, transparent 60%),
  radial-gradient(900px 600px at -10% 110%, #071a33 0%, transparent 55%),
  var(--bg); min-height:100dvh;}
a{color:var(--accent)}
code{background:#12283f;padding:0 .3em;border-radius:4px;font-size:.92em}

/* top bar */
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:12px 20px;border-bottom:1px solid #12283f;flex-wrap:wrap}
.brand-title{font-weight:800;letter-spacing:.14em;font-size:17px}
.brand-sub{color:var(--dim);font-size:12.5px;margin-top:2px}
.topnav{display:flex;gap:6px;flex-wrap:wrap}
.nav-btn{background:transparent;border:1px solid transparent;color:var(--dim);
  padding:7px 12px;border-radius:8px;cursor:pointer;font-size:14px;text-decoration:none}
.nav-btn:hover{color:var(--ink)}
.nav-btn.active{color:var(--ink);border-color:var(--panel-line);background:#0d1c31}

/* test layout */
#view-test{display:none}
#view-test.active{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:16px;
  padding:16px 20px;max-width:1560px;margin:0 auto;align-items:start}
.view{display:none}
.view.active{display:block}
.stage{position:relative;height:calc(100dvh - 130px);min-height:520px;border-radius:18px;overflow:hidden;
  background:
    radial-gradient(600px 380px at 30% 22%, rgba(255,196,86,.14) 0%, transparent 55%),
    radial-gradient(1000px 700px at 50% 55%, #06182f 0%, #020610 70%);
  border:1px solid #12283f}
#globe{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}
#globe:active{cursor:grabbing}
#flatFallback{position:absolute;inset:0;width:100%;height:100%}
.hud{position:absolute;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-end;
  padding:14px 18px;pointer-events:none;z-index:3}
.hud-top{top:0}
.hud-bottom{bottom:0;align-items:center}
.hud-model{font-weight:700;font-size:15px;text-shadow:0 1px 8px #000}
.hud-score{font-size:30px;font-weight:800;text-shadow:0 1px 10px #000;text-align:right;line-height:1}
.hud-score-label{display:block;font-size:11px;font-weight:600;color:var(--dim);letter-spacing:.12em;text-transform:uppercase;margin-top:3px}
.mode-toggle{pointer-events:auto;display:flex;background:#081527cc;border:1px solid var(--panel-line);border-radius:10px;overflow:hidden}
.mode-btn{background:transparent;border:0;color:var(--dim);padding:8px 13px;cursor:pointer;font-size:13px}
.mode-btn.active{background:#17365c;color:#fff}
.mode-btn:disabled{opacity:.38;cursor:not-allowed}
.stage-hint{color:var(--dim);font-size:12px;text-shadow:0 1px 6px #000;text-align:right;max-width:46%}
.hud-sheet{display:none}

/* right panel */
.panel{display:flex;flex-direction:column;gap:16px;min-width:0}
.panel-card{background:var(--panel);border:1px solid var(--panel-line);border-radius:16px;padding:18px}
.result-head{display:flex;justify-content:space-between;gap:10px}
.result-model{font-size:17px;font-weight:750}
.result-meta{color:var(--dim);font-size:12.5px;margin-top:3px;line-height:1.45}
.badge{flex:none;height:fit-content;font-size:11px;font-weight:800;letter-spacing:.1em;
  padding:4px 8px;border-radius:6px;background:#17365c;color:#bcd7ff;border:1px solid var(--panel-line)}
.badge.blind{background:#0f3d24;color:#8ce8a8;border-color:#1d5c38}
.badge.assisted{background:#4a3208;color:#ffd98c;border-color:#7a5a14}
.result-card.is-empty #regionTitle{display:none}
.sample-btn{margin-top:12px;background:transparent;border:1px solid var(--panel-line);color:var(--accent);
  border-radius:9px;padding:8px 12px;font-size:13px;font-weight:650;cursor:pointer}
.sample-btn:hover{border-color:var(--accent)}
.big-score{font-size:52px;font-weight:850;line-height:1.05;margin:10px 0 4px}
.big-score-unit{font-size:15px;color:var(--dim);font-weight:600;margin-left:6px}
.submetrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0 4px}
.submetric{background:#0d1f38;border:1px solid #16304f;border-radius:10px;padding:8px 10px}
.submetric .v{font-size:19px;font-weight:800}
.submetric .k{font-size:10.5px;color:var(--dim);letter-spacing:.06em;text-transform:uppercase;margin-top:2px;line-height:1.35}
.section-title{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin:16px 0 8px}
.section-title.big{font-size:15px;color:var(--ink);letter-spacing:.04em;text-transform:none;margin-top:0}
.bars{display:flex;flex-direction:column;gap:6px}
.bar-row{display:grid;grid-template-columns:118px 1fr 46px;align-items:center;gap:8px;font-size:12.5px}
.bar-row .name{color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-track{height:8px;background:#0d1f38;border-radius:5px;overflow:hidden}
.bar-fill{height:100%;border-radius:5px;background:var(--accent)}
.bar-fill.land{background:var(--green)} .bar-fill.base{background:#5b7290}
.bar-row .val{text-align:right;font-variant-numeric:tabular-nums}
.review p{margin:0 0 8px;line-height:1.55;font-size:14px}
.confusion{color:var(--dim);font-size:12.5px;line-height:1.6;border-top:1px solid #16304f;padding-top:10px;margin-top:4px}
.fineprint{color:var(--dim);font-size:12.5px;line-height:1.55}
.submit-card label{display:block;font-size:13px;font-weight:650;margin:10px 0}
.submit-card .optional{color:var(--dim);font-weight:400}
.submit-card input[type=text],.submit-card textarea{width:100%;margin-top:5px;background:#081527;
  border:1px solid var(--panel-line);border-radius:9px;color:var(--ink);padding:9px 10px;font-size:13.5px}
.submit-card textarea{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px;line-height:1.5;resize:vertical;word-break:break-all}
.submit-card label.check{display:flex;gap:8px;font-weight:400;color:var(--dim);line-height:1.5;align-items:flex-start}
.submit-card label.check input{margin-top:3px}
.grid-status{font-size:12.5px;color:var(--dim)}
.grid-status.ok{color:#8ce8a8}.grid-status.bad{color:#ffb3b3}
.submit-btn{width:100%;margin-top:8px;background:var(--accent);color:#04101f;border:0;border-radius:10px;
  padding:12px;font-size:15px;font-weight:800;cursor:pointer}
.submit-btn:hover{filter:brightness(1.1)}
.submit-btn:disabled{opacity:.5;cursor:wait}
.submit-msg{font-size:13px;margin-top:9px;line-height:1.5}
.submit-msg.err{color:#ffb3b3}.submit-msg.ok{color:#8ce8a8}
.api-details{margin-top:12px;color:var(--dim);font-size:13px}
.api-details pre{background:#081527;border:1px solid #16304f;border-radius:9px;padding:10px;overflow:auto;font-size:11.5px;color:#bcd7ff}

/* pages */
.page-wrap{max-width:880px;margin:0 auto;padding:26px 20px 50px}
.page-wrap h1{font-size:30px;margin:0 0 8px}
.page-wrap h2{font-size:19px;margin:26px 0 8px}
.lede{color:var(--dim);line-height:1.6}
.prose p{line-height:1.65;color:#cfe0f2}
table.board{width:100%;border-collapse:collapse;font-size:14px}
table.board th,table.board td{padding:9px 10px;border-bottom:1px solid #16304f;text-align:left}
table.board th{color:var(--dim);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase}
table.board td.num,table.board th.num{text-align:right;font-variant-numeric:tabular-nums}
.loading{color:var(--dim);padding:14px 0}
.footer{color:#5f7692;font-size:12px;text-align:center;padding:14px 10px 22px}

/* mobile: single non-scrolling screen, HUD fusion */
@media (max-width:900px){
  body{display:flex;flex-direction:column;height:100dvh;overflow:hidden}
  .topbar{padding:8px 10px;flex-wrap:nowrap;flex:none}
  .brand-title{font-size:13.5px;letter-spacing:.08em;white-space:nowrap}
  .brand-sub{display:none}
  .topnav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
  .topnav::-webkit-scrollbar{display:none}
  .nav-btn{padding:6px 8px;font-size:13px;white-space:nowrap}
  .footer{display:none}
  #view-test.active{display:flex;flex-direction:column;flex:1;min-height:0;padding:0;overflow-y:auto;align-items:stretch}
  .stage{flex:none;width:100%;height:calc(100dvh - 49px);min-height:0;border-radius:0;border:0}
  .stage-hint{display:none}
  .hud-score{font-size:24px}
  .panel{position:static}
  .panel-card{border-radius:0;border-left:0;border-right:0}
  .hud-sheet{display:block;position:absolute;left:10px;right:10px;bottom:52px;z-index:4;
    background:#081527d9;border:1px solid var(--panel-line);border-radius:12px;backdrop-filter:blur(6px)}
  .hud-sheet-toggle{width:100%;background:transparent;border:0;color:var(--ink);font-size:13px;
    font-weight:700;padding:9px 12px;text-align:left;cursor:pointer}
  .hud-sheet-body{display:none;padding:0 12px 10px;font-size:12.5px;color:var(--dim);line-height:1.55}
  .hud-sheet.open .hud-sheet-body{display:block}
  .hud-sheet-body .v{color:var(--ink);font-weight:800}
}