:root{
  --bg:#0b0f14;--card:#111821;--line:#1f2a37;--txt:#e8eef5;--mut:#8696a8;
  --hot:#ff4d3d;--cy:#3ad1ff;--yl:#ffd23f;--or:#ff9f1c;--blu:#4d7cff;--gr:#7a8a9c;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--txt);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-tap-highlight-color:transparent}
header{position:sticky;top:0;z-index:5;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;background:rgba(11,15,20,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{font-weight:800;letter-spacing:.5px;font-size:18px}.brand b{color:var(--hot)}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--hot);margin-right:8px;box-shadow:0 0 10px var(--hot)}
.tag{color:var(--mut);font-size:13px}
main{max-width:560px;margin:0 auto;padding:12px 12px 40px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;margin-bottom:12px}
h2{font-size:13px;margin:0 0 10px;text-transform:uppercase;letter-spacing:1.2px;color:var(--cy)}
.subh{font-size:12px;margin:12px 0 6px;color:var(--mut);text-transform:uppercase;letter-spacing:.8px;font-weight:700}
.eduTag{font-size:11px;color:var(--mut);margin:-4px 0 8px;font-style:italic}

/* stage */
.stage{position:relative;padding:6px}
svg{width:100%;height:auto;display:block}
.muscle{stroke:#000;stroke-opacity:.35;stroke-width:1;cursor:pointer;transition:opacity .2s}
.muscle.dim{opacity:.45}

/* lesson chips */
.lessonChips{display:flex;flex-wrap:wrap;gap:6px;padding:4px 6px 8px}
.lc{background:#0b1118;border:1px solid var(--line);border-radius:999px;padding:5px 10px;font-size:11.5px;color:var(--txt)}
.lc em{font-style:normal;color:var(--mut);margin-right:5px;font-size:10px;text-transform:uppercase;letter-spacing:.4px}

/* demand HUD */
.demandHud{display:grid;grid-template-columns:88px 1fr;gap:10px;padding:6px 6px 10px;align-items:center}
.angBig{background:#0b1118;border:1px solid var(--line);border-radius:14px;text-align:center;padding:10px 4px;font-variant-numeric:tabular-nums}
.angBig span{font-size:36px;font-weight:800;color:var(--cy);line-height:1}
.angBig sup{font-size:16px;color:var(--mut);font-weight:700}
.demRight{min-width:0}
.demLabel{font-size:12.5px;color:var(--mut);margin-bottom:6px}
.demLabel b{color:var(--txt);font-size:15px}
.demBar{height:14px;background:#0b1118;border:1px solid var(--line);border-radius:7px;overflow:hidden}
.demBar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#3ad1ff,#ffd23f,#ff4d3d);border-radius:7px;transition:width .08s linear}
.zoneRow{margin-top:6px;font-size:12.5px;color:var(--mut)}
.zoneRow b{color:var(--yl);text-transform:uppercase;letter-spacing:.5px;font-size:12px}
.phasePill{display:inline-block;margin-left:6px;padding:2px 8px;border-radius:999px;background:#1f2a37;color:var(--txt);font-size:11px;font-weight:700}

.peakBadge{position:absolute;top:12px;right:12px;background:var(--hot);color:#fff;font-weight:800;font-size:11px;padding:4px 10px;border-radius:20px;opacity:0;transition:opacity .2s;box-shadow:0 0 18px var(--hot);pointer-events:none}
.peakBadge.on{opacity:1}

/* grip */
.gripSeg{display:flex;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.gripSeg button{flex:1;background:none;color:var(--mut);border:0;padding:11px 6px;font-weight:700;font-size:13px}
.gripSeg button.on{background:#1f2a37;color:var(--txt);box-shadow:inset 0 -3px 0 var(--hot)}
.gripNote{font-size:12px;color:var(--mut);margin:8px 0 0}

/* controls */
.row{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px}
.btn{background:var(--hot);color:#fff;border:0;border-radius:12px;padding:10px 20px;font-weight:800;font-size:16px}
.seg{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{background:none;color:var(--mut);border:0;padding:9px 12px;font-weight:700}
.seg .on{background:#1f2a37;color:var(--txt)}
input[type=range]{width:100%;height:36px;-webkit-appearance:none;background:transparent}
input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:4px;background:linear-gradient(90deg,#1f2a37,#ff4d3d 45%,#ff4d3d 70%,#1f2a37)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:#fff;margin-top:-10px;box-shadow:0 0 0 4px rgba(58,209,255,.4)}
input[type=range]::-moz-range-track{height:8px;border-radius:4px;background:linear-gradient(90deg,#1f2a37,#ff4d3d 45%,#ff4d3d 70%,#1f2a37)}
input[type=range]::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:#fff;border:0}
.ticks{display:flex;justify-content:space-between;color:var(--mut);font-size:11px}
.tog{display:block;margin-top:10px;color:var(--mut);font-size:13px}
.conv{font-size:12px;color:var(--mut);margin:8px 0 0}

canvas{width:100%;display:block}
.meter{height:12px;background:#0b1118;border-radius:6px;overflow:hidden;margin:10px 0;border:1px solid var(--line)}
#meterFill{height:100%;width:0;background:linear-gradient(90deg,#3ad1ff,#ffd23f,#ff4d3d)}
.nums{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.nums div{background:#0b1118;border:1px solid var(--line);border-radius:10px;padding:6px 8px;text-align:center}
.nums b{font-variant-numeric:tabular-nums}
small{display:block;color:var(--mut);font-size:11px;text-transform:uppercase;letter-spacing:.6px}
select{background:#1f2a37;color:var(--txt);border:0;border-radius:6px;padding:2px 4px;font-weight:700}
.note{font-size:11.5px;color:var(--mut);margin:10px 0 0}

/* muscle lists */
.mlist{display:grid;gap:7px}
.mrow{display:grid;grid-template-columns:1fr auto;gap:6px 10px;align-items:center;background:#0b1118;border:1px solid var(--line);border-radius:12px;padding:9px 10px}
.mrow .name{font-weight:700;font-size:13.5px;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.mrow .swatch{width:10px;height:10px;border-radius:3px;flex-shrink:0}
.mrow .tag{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;padding:2px 6px;border-radius:999px;background:#1f2a37;color:var(--mut)}
.mrow .tag.pm{color:#ffb4ad;background:rgba(255,77,61,.18)}
.mrow .tag.syn{color:#ffd9a0;background:rgba(255,159,28,.16)}
.mrow .tag.ant{color:#a8c0ff;background:rgba(77,124,255,.16)}
.mrow .tag.stb{color:#c5d0dc;background:rgba(122,138,156,.18)}
.mrow .pct{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--txt)}
.mrow .pct em{font-style:normal;font-size:11px;color:var(--mut);font-weight:600;margin-left:2px}
.mrow .bar{grid-column:1/-1;height:7px;background:#151c26;border-radius:4px;overflow:hidden}
.mrow .bar i{display:block;height:100%;border-radius:4px;width:0}

/* coach */
.coach{list-style:none;padding:0;margin:0}
.coach li{position:relative;padding:8px 8px 8px 22px;border-bottom:1px solid var(--line);font-size:13.5px;color:#c3cfdc}
.coach li:last-child{border-bottom:0}
.coach li::before{content:"";position:absolute;left:4px;top:14px;width:8px;height:8px;border-radius:50%;background:var(--hot);box-shadow:0 0 8px var(--hot)}

details{border-top:1px solid var(--line);padding:8px 0}
summary{font-weight:700;cursor:pointer}
details p{color:#c3cfdc;margin:8px 0 0;font-size:14px}
footer{text-align:center;color:var(--mut);font-size:12px;padding:10px}

.lbl{cursor:pointer}
.lbl text{font:700 11px system-ui,sans-serif;paint-order:stroke;stroke:#0b0f14;stroke-width:3px}
.lbl rect{fill:rgba(11,15,20,.85);stroke-width:1}
.chip{margin:4px 6px 2px;background:#0b1118;border:1px solid var(--line);border-left:4px solid var(--hot);border-radius:10px;padding:7px 10px;font-size:12.5px;line-height:1.45;color:#c3cfdc}
.chip b{color:var(--txt)}
.chip .k{color:var(--mut);font-size:10.5px;text-transform:uppercase;letter-spacing:.5px;margin-right:4px}
.chip .hint{color:var(--mut);font-size:11px}

@media (max-width:390px){
  .angBig span{font-size:30px}
  .demandHud{grid-template-columns:76px 1fr;gap:8px}
  .gripSeg button{font-size:12px;padding:10px 4px}
  .mrow .pct{font-size:16px}
}

/* Floating playback FAB */
body{padding-bottom:calc(96px + env(safe-area-inset-bottom))}
.fab{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(14px + env(safe-area-inset-bottom));z-index:9999;display:flex;align-items:center;gap:8px;padding:8px;border-radius:999px;background:rgba(14,16,20,.78);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.12);box-shadow:0 8px 28px rgba(0,0,0,.55)}
.fab button{border:0;color:#fff;font-weight:800;cursor:pointer;-webkit-tap-highlight-color:transparent}
.fabPlay{width:60px;height:60px;border-radius:50%;background:#ff4d3d;font-size:22px;box-shadow:0 0 0 3px rgba(255,77,61,.25)}
.fabPlay.on{background:#3ad1ff;color:#071016;box-shadow:0 0 0 3px rgba(58,209,255,.25)}
.fabSpeed{min-width:64px;height:48px;border-radius:24px;background:rgba(255,255,255,.1);font-size:17px}
.fabMin{width:36px;height:36px;border-radius:50%;background:transparent;color:#aab !important;font-size:18px}
.fab.min .fabSpeed{display:none}
.fab.min .fabPlay{width:46px;height:46px;font-size:17px}
.fab.min{left:auto;right:14px;transform:none}
/* ---- library + levers ---- */
.exList{display:grid;gap:8px}
.exItem{display:flex;align-items:center;gap:10px;background:#0b1118;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--txt);text-decoration:none}
.exItem.on{border-color:var(--hot);box-shadow:inset 3px 0 0 var(--hot)}
.exNum{width:24px;height:24px;border-radius:50%;background:#1f2a37;display:grid;place-items:center;font-weight:800;font-size:12px;flex:none}
.exItem.on .exNum{background:var(--hot)}
.exMain{flex:1;min-width:0}.exMain b{display:block;font-size:14px}.exMain small{color:var(--mut);font-size:11.5px}
.diff{font-size:10px;font-weight:800;padding:3px 8px;border-radius:999px;text-transform:uppercase;letter-spacing:.5px;flex:none}
.d1{background:#12352a;color:#4be3a0}.d2{background:#3a2d10;color:var(--yl)}.d3{background:#3a1512;color:var(--hot)}
.exItem.soon{opacity:.45}
.lvClass{background:#0b1118;border:1px solid var(--line);border-radius:12px;padding:10px;font-size:12.5px;color:var(--mut)}
.lvClass b{color:var(--yl);display:block;font-size:15px;margin-bottom:2px}
.lvGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0}
.lvGrid div{background:#0b1118;border:1px solid var(--line);border-radius:10px;padding:8px;text-align:center}
.lvGrid small{display:block;color:var(--mut);font-size:10.5px}.lvGrid b{font-size:16px;font-variant-numeric:tabular-nums}
.lvNote{font-size:12.5px;margin:0 0 8px}.lvNote .dis{color:var(--hot);font-weight:700}.lvNote .adv{color:#4be3a0;font-weight:700}
.lever details summary{cursor:pointer;color:var(--cy);font-size:13px;margin-top:6px}
.lever details p{font-size:12.5px;color:#c3cfdc}
.exStage svg{width:100%;height:auto;display:block}
.exStage{position:relative}
/* v6 dropdown library */
header{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px}
header .tag{flex-basis:100%;order:3}
.exBtn{margin-left:auto;max-width:62%;display:flex;gap:6px;align-items:center;background:#16202b;border:1px solid var(--line);color:var(--txt);border-radius:999px;padding:7px 12px;font-weight:700;font-size:13px;cursor:pointer}
.exBtn span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.exSelWrap{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--mut,#8696a8)}
#exSel{width:100%;font-size:16px;padding:12px;border-radius:12px;background:#0b1118;color:var(--txt);border:1px solid var(--line);font-weight:700}
.exOpen{margin-top:10px;width:100%;padding:11px;border-radius:12px;background:#16202b;color:var(--txt);border:1px solid var(--line);font-weight:700}
.exSheet{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.6);display:flex;align-items:flex-end;justify-content:center}
.exSheet[hidden]{display:none}
.exSheetIn{width:100%;max-width:640px;max-height:88vh;background:#0e141b;border:1px solid var(--line);border-radius:20px 20px 0 0;padding:14px 14px calc(14px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px}
.exSheetHd{display:flex;justify-content:space-between;align-items:center;font-size:17px}
.exSheetHd button{background:none;border:0;color:var(--txt);font-size:20px}
#exQ{padding:11px;border-radius:12px;border:1px solid var(--line);background:#0b1118;color:var(--txt);font-size:16px}
#exSList{overflow:auto;display:flex;flex-direction:column;gap:6px}
#exSList .exItem[hidden]{display:none}
.exGrp{margin:8px 2px 2px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#8696a8}
body.noScroll{overflow:hidden}
.fabMin{width:auto!important;min-width:48px;height:48px!important;border-radius:24px!important;background:rgba(255,255,255,.1)!important;color:#fff!important;font-size:18px!important;padding:0 10px}
.fabMin small{font-size:11px;margin-left:2px}
.mrow .eff{display:block;font-size:10px;color:#8696a8;margin-left:18px}
.mAng{color:#3ad1ff}