:root{--bg:#0f1418;--card:#182028;--ink:#e8edf2;--mut:#9aa5b1;--acc:#ffb000;--bad:#e4572e;--ok:#4fb3bf}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.top,main,.foot{max-width:980px;margin:0 auto;padding:0 16px}.top{padding-top:22px}
h1{font-size:1.45rem;line-height:1.25;margin:.2em 0 .5em}h2{font-size:1.2rem;margin:0 0 .6em}
.lede{font-size:1.05rem}.sub,.hint,.foot{color:var(--mut)}.hint{font-size:.92rem}
.card{background:var(--card);border-radius:14px;padding:18px;margin:16px 0}
.stage{display:grid;grid-template-columns:minmax(260px,360px) 1fr;gap:18px;align-items:start}
.stage #ana{grid-column:1/-1}
.tach canvas{width:100%;height:auto}.readout{text-align:center;color:var(--mut)}.readout b{color:var(--ink);font-size:1.6rem}
.ctrl{display:flex;flex-direction:column;gap:12px}.ctrl canvas{width:100%;height:90px;background:#0b0f12;border-radius:8px}
.btn{display:inline-block;background:var(--acc);color:#111;border:0;border-radius:10px;padding:10px 16px;font:600 1rem system-ui;cursor:pointer;text-decoration:none;margin:2px 0}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid #3a4652}.btn.big{font-size:1.1rem;padding:14px 20px}
.btn.gas{background:#2b3640;color:var(--ink);padding:26px;font-size:1.2rem;touch-action:none;user-select:none}.btn.gas.on{background:var(--bad)}
.btn:disabled{opacity:.45;cursor:default}.btn.file input{display:none}
.thr{display:flex;flex-direction:row;gap:10px;align-items:center}.thr input{flex:1}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
label{display:flex;flex-direction:column;gap:4px;font-size:.92rem;color:var(--mut)}label.chk{flex-direction:row;align-items:center;color:var(--ink)}
input,select{background:#0f1418;color:var(--ink);border:1px solid #3a4652;border-radius:8px;padding:8px;font:inherit;font-size:max(1rem,1em)}
.big{font-size:1.25rem;margin:.2em 0}.big b{color:var(--acc)}.eq{color:var(--mut)}
.t{width:100%;border-collapse:collapse;font-size:.95rem}.t td,.t th{border-bottom:1px solid #2a343e;padding:6px;text-align:left}
.char b{color:var(--ok)}.buy{border-top:1px solid #2a343e;margin-top:14px;padding-top:10px}
.key label{display:inline-flex;flex-direction:row;gap:8px;align-items:center}#keymsg{color:var(--acc)}
.pl{list-style:none;padding:0}.pl li{padding:4px 0}.lnk{background:none;border:0;color:var(--ok);cursor:pointer;font:inherit;text-decoration:underline}.del{color:var(--bad)}
body:not(.is-pro) #run,body:not(.is-pro) #wav,body:not(.is-pro) #psave{opacity:.85}
details{border-bottom:1px solid #2a343e;padding:8px 0}summary{cursor:pointer;font-weight:600}
.foot{padding:20px 16px 40px;font-size:.88rem}
@media(max-width:640px){.stage{grid-template-columns:minmax(0,1fr)}h1{font-size:1.2rem}}