:root{
  --bg:#fafaf8; --card:#ffffff; --line:#e7e5e0; --ink:#1c1e22; --dim:#6b7078;
  --accent:#e8950c; --band:#e85d75;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;line-height:1.6}
.site-head{text-align:center;padding:20px 16px 6px}
.site-head h1{margin:0;font-size:26px}
.site-head p{margin:4px 0 0;color:var(--dim)}
.wrap{max-width:1080px;margin:0 auto;padding:12px 16px 48px;display:grid;gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.stage{position:relative;padding:6px}
#sideview{width:100%;display:block;touch-action:none}
#miniframe{position:absolute;top:14px;right:14px;width:180px;max-width:28%;
  border-radius:6px;box-shadow:0 2px 10px rgba(0,0,0,.18)}
.grab{cursor:grab}
#personSharp,#treeSharp,#treeBlur{pointer-events:none}
.svg-lbl{font-size:15px;fill:var(--dim);font-variant-numeric:tabular-nums}
.svg-big{font-size:24px;font-weight:700;fill:var(--accent);font-variant-numeric:tabular-nums}
.mf-lbl{font-size:15px;font-weight:700;fill:#16181d;paint-order:stroke;stroke:#ffffff;stroke-width:3px}
.hidden{display:none}
.caption,.toast{position:absolute;left:50%;transform:translateX(-50%);
  background:rgba(22,24,29,.92);color:#fff;padding:10px 16px;border-radius:10px;
  font-size:15px;max-width:86%;text-align:center}
.caption{bottom:18px}.toast{top:14px}
.data{display:flex;flex-wrap:wrap;gap:6px 22px;justify-content:center}
.data b{font-size:20px;color:var(--accent);font-variant-numeric:tabular-nums}
.data span{color:var(--dim);font-size:13px;display:block}
.controls{display:grid;grid-template-columns:1.2fr 1fr;gap:10px 26px}
.ctl{margin-bottom:10px}
.ctl label{display:flex;justify-content:space-between;font-weight:600;font-size:14px}
.ctl output{color:var(--accent);font-variant-numeric:tabular-nums}
input[type=range]{width:100%;accent-color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.chips button,.seg button,.mini{border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:3px 12px;font-size:13px;cursor:pointer;color:var(--ink)}
.chips button:hover{border-color:var(--accent)}
.chips button.on,.seg button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.seg{display:inline-flex;gap:0}.seg button{border-radius:0}
.seg button:first-child{border-radius:999px 0 0 999px}.seg button:last-child{border-radius:0 999px 999px 0}
.big{width:100%;padding:10px;border:0;border-radius:10px;background:var(--accent);
  color:#fff;font-size:16px;font-weight:700;cursor:pointer}
.big:disabled{opacity:.5;cursor:default}
.tips{display:grid;gap:8px}
.tips .tip{background:#fff8ec;border:1px solid #f3ddb3;border-radius:10px;padding:10px 14px}
.cards-sec h2{font-size:18px;margin:6px 0}
.cards-sec details{background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:10px 14px;margin-bottom:8px}
.cards-sec summary{font-weight:700;cursor:pointer}
.cards-sec .demo{margin-top:8px}
.site-foot{text-align:center;color:var(--dim);padding:22px 16px 40px;
  margin-top:8px;border-top:1px solid var(--line)}
.foot-quote{margin:0 auto 16px;max-width:560px;font-family:Georgia,"Times New Roman",serif;
  font-style:italic;font-size:16px;line-height:1.7;color:#3a3d44}
.foot-quote cite{display:block;margin-top:6px;font-style:normal;font-size:13px;
  font-weight:600;color:var(--accent)}
.foot-contact{display:flex;justify-content:center;align-items:center;gap:22px;flex-wrap:wrap;margin-bottom:12px}
.foot-contact a{display:inline-flex;align-items:center;gap:6px;color:var(--accent);
  font-size:16px;font-weight:700;text-decoration:none}
.foot-contact a:hover{text-decoration:underline}
.foot-stats{font-size:12px;color:var(--dim);font-variant-numeric:tabular-nums}
.foot-stats b{color:#3a3d44;font-weight:700}
@media(max-width:900px){
  .controls{grid-template-columns:1fr}
  #miniframe{position:static;width:180px;margin:8px auto 0;display:block}
}