:root{
  --bg1:#070714; --bg2:#141a3a; --card:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.12); --txt:#e8ecff; --muted:#9aa3c7;
  --orange:#ffa04d; --green:#4ade80; --red:#f87171; --purple:#a78bfa;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
  color:var(--txt);
  background:radial-gradient(1200px 700px at 50% -10%,#1b2350 0%,var(--bg1) 55%),var(--bg1);
  overflow-x:hidden;
}
#app{max-width:980px;margin:0 auto;padding:18px 16px 40px}

header{position:relative;text-align:center;padding:10px 0 6px}
h1{
  font-size:27px;letter-spacing:.5px;font-weight:800;
  background:linear-gradient(90deg,#ffd9a0,#ffa04d 45%,#ff6b4a);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.sub{color:var(--muted);font-size:13px;margin-top:7px}
.music-btn{
  position:absolute;right:0;top:12px;padding:8px 13px;border-radius:999px;
  background:rgba(255,160,77,.12);border:1px solid rgba(255,160,77,.4);
  color:#ffc98a;font-size:13px;cursor:pointer;min-height:44px;
}
.music-btn.on{background:rgba(74,222,128,.14);border-color:rgba(74,222,128,.45);color:#8af0b5}

#stageWrap{
  position:relative;margin-top:14px;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);box-shadow:0 20px 60px rgba(0,0,0,.5);
  background:
    radial-gradient(900px 500px at 70% 20%,rgba(122,92,255,.16),transparent 60%),
    radial-gradient(700px 500px at 15% 80%,rgba(255,110,60,.10),transparent 55%),
    linear-gradient(180deg,#0b0d24 0%,#101536 60%,#0a0b1d 100%);
}
#gl{display:block;width:100%;height:520px;touch-action:none}

#phaseBadge{
  position:absolute;left:14px;top:14px;padding:7px 14px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.5px;
  background:rgba(10,12,30,.72);border:1px solid rgba(255,255,255,.18);
  color:#ffc98a;backdrop-filter:blur(6px);transition:color .3s,border-color .3s;
}

#lever{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  display:flex;flex-direction:column;align-items:center;gap:10px;z-index:5;
}
.lever-track{
  position:relative;width:44px;height:min(300px,44vh);border-radius:22px;
  background:rgba(10,12,30,.66);border:1px solid rgba(255,255,255,.22);
  box-shadow:inset 0 2px 10px rgba(0,0,0,.6);backdrop-filter:blur(6px);
  touch-action:none;cursor:pointer;
}
.lever-fill{
  position:absolute;left:50%;bottom:6px;transform:translateX(-50%);
  width:10px;border-radius:5px;
  background:linear-gradient(180deg,#ffa04d,#ff6b4a 55%,#4ade80);
  opacity:.55;pointer-events:none;
}
.lever-knob{
  position:absolute;left:50%;top:0;transform:translate(-50%,-50%);
  width:38px;height:38px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#fff2dd,#ffa04d 45%,#c46a1f);
  border:2px solid rgba(255,255,255,.75);
  box-shadow:0 4px 14px rgba(0,0,0,.55),0 0 18px rgba(255,160,77,.45);
  cursor:grab;touch-action:none;display:flex;align-items:center;justify-content:center;z-index:3;
}
.lever-knob:active{cursor:grabbing;transform:translate(-50%,-50%) scale(1.06)}
.grip-dots{color:rgba(60,30,0,.7);font-size:10px;letter-spacing:1px;transform:rotate(90deg);font-weight:900}
#playBtn{
  width:44px;height:44px;border-radius:50%;font-size:16px;cursor:pointer;color:#fff;
  background:linear-gradient(180deg,#ffa04d,#e2691f);border:none;
  box-shadow:0 4px 12px rgba(255,140,60,.35);
}
#timeLbl{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}

#hint{
  position:absolute;left:14px;bottom:12px;font-size:12px;color:var(--muted);
  background:rgba(10,12,30,.6);padding:6px 11px;border-radius:8px;
  border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(4px);
}

#ganttCard{margin-top:14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px 10px}
.stage-bar{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.stage-bar .lbl{font-weight:800;font-size:15px;color:#ffc98a}
.stage-bar .desc{color:var(--muted);font-size:12.5px;flex:1;min-width:200px}

.gantt{position:relative;padding:2px 0 8px}
.g-row{display:flex;align-items:center;gap:10px;margin:7px 0;position:relative;z-index:1}
.g-name{width:104px;flex-shrink:0;font-size:12px;color:var(--muted);text-align:right}
.g-row.cur .g-name{color:#fff;font-weight:700}
.g-track{
  position:relative;flex:1;height:26px;border-radius:7px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);overflow:hidden;
}
.g-bar{
  position:absolute;top:3px;bottom:3px;border-radius:5px;opacity:.85;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25);
}
.g-row.cur .g-bar{opacity:1;box-shadow:0 0 12px currentColor}
#playhead{
  position:absolute;top:-2px;bottom:2px;width:2px;background:#fff;z-index:2;
  border-radius:2px;box-shadow:0 0 8px #fff,0 0 14px rgba(255,255,255,.6);
  pointer-events:none;
}
#playhead::before{
  content:"";position:absolute;left:50%;top:0;transform:translateX(-50%);
  border:5px solid transparent;border-top:7px solid #fff;border-bottom:none;
}

footer{margin-top:20px;text-align:center;font-size:12px;color:var(--muted);padding-bottom:8px}
footer a{color:#ff9d5c;text-decoration:none;border-bottom:1px dotted rgba(255,157,92,.5)}
footer a:hover{color:#ffc98a}

@media (max-width:640px){
  #app{padding:12px 10px 40px}
  h1{font-size:21px}
  .sub{font-size:11.5px;padding-right:0}
  .music-btn{position:static;margin-top:10px;display:inline-block}
  #stageWrap{overflow:visible}
  #gl{height:430px}
  #lever{position:static;transform:none;flex-direction:row;justify-content:center;align-items:center;gap:18px;margin-top:10px}
  .lever-track{width:220px;height:38px;touch-action:pan-x}
  .lever-knob{top:50%;left:0;transform:translate(-50%,-50%);position:absolute}
  .lever-fill{height:100%;bottom:0;left:0;transform:none;width:40%}
  #phaseBadge{left:10px;top:10px;font-size:12px}
  #hint{left:10px;bottom:10px;right:10px;text-align:center}
  .g-name{width:88px;font-size:11px}
}