/* 미니 실험 공통: 초파리·선충 실험실과 같은 실험노트 테마 + 어두운 현미경 무대 */
:root{
  --bg:#f5efe0; --paper:#fffaf0; --card:#fff; --line:#e3d8c0; --ink:#26332e; --muted:#6f7a72;
  --teal:#1f8a7a; --teal-d:#156356; --teal-l:#d8efe9; --banana:#f2c53d; --red:#d8463c; --scope:#121829;
  --display:"Jua","Gowun Dodum","Malgun Gothic",system-ui,sans-serif;
  --body:"Gowun Dodum",system-ui,-apple-system,"Malgun Gothic",sans-serif;
  color-scheme:light;
}
[hidden]{display:none!important}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
#app{max-width:520px;margin:0 auto;padding:env(safe-area-inset-top,0px) 16px calc(28px + env(safe-area-inset-bottom,0px))}
header{display:flex;align-items:center;gap:10px;padding:10px 0 4px}
header h1{font-family:var(--display);font-weight:400;font-size:clamp(18px,5.4vw,23px);margin:0;line-height:1.2}
header .tag{cursor:pointer;margin-left:auto;font-size:12px;background:var(--ink);color:#fff;border-radius:99px;padding:2px 10px;white-space:nowrap}
.zoo-old{display:flex;gap:6px;overflow-x:auto;padding:4px 0 8px;scrollbar-width:none;margin:0 -16px;padding-left:16px;padding-right:16px}
.zoo a{flex:none;display:inline-flex;align-items:center;gap:5px;padding:5px 11px;border-radius:999px;border:1.5px solid var(--line);background:var(--paper);font-size:13.5px;text-decoration:none;color:var(--ink);white-space:nowrap}
.zoo a.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.zoo a b{color:var(--red);font-size:10.5px}
.zoo a.on b{color:#ffd76a}
/* 근거 카드: 화면 맨 위, 바로 보이게 */
.proof{background:linear-gradient(160deg,#1c2440,#121829);color:#e8ecff;border-radius:18px;padding:14px 16px;margin:4px 0 12px}
.proof .k{font-size:12.5px;color:#ffd76a;font-weight:700;letter-spacing:.01em}
.proof h2{font-family:var(--display);font-weight:400;font-size:19px;color:#fff;margin:2px 0 8px;line-height:1.3}
.proof ul{list-style:none;margin:0;padding:0}
.proof li{position:relative;padding-left:24px;margin:6px 0;font-size:14px;color:#d5dcf7;line-height:1.45}
.proof li::before{content:"✓";position:absolute;left:0;top:0;width:18px;height:18px;border-radius:50%;background:#2bb39f;color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:700}
.proof li b{color:#fff}
.proof .src{font-size:12px;color:#aab3d6;margin-top:8px;border-top:1px solid #2a3356;padding-top:8px}
.proof details{margin-top:6px;font-size:13px;color:#c4cbe8}
.proof summary{cursor:pointer;color:#ffd76a}
.stage{position:relative;border-radius:18px;overflow:hidden;background:var(--scope);border:1.5px solid #2a3356}
.stage canvas{display:block;width:100%;touch-action:manipulation}
.stage .over{position:absolute;left:10px;top:8px;font-size:12.5px;color:#cfd6f5;pointer-events:none;text-shadow:0 1px 3px #000}
.toast{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);background:rgba(255,255,255,.92);color:var(--ink);padding:6px 14px;border-radius:999px;font-size:14px;white-space:nowrap;pointer-events:none;transition:opacity .3s;max-width:94%;overflow:hidden;text-overflow:ellipsis}
.btns{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}
.btn{display:flex;align-items:center;justify-content:center;gap:6px;min-height:50px;padding:8px 10px;border-radius:14px;background:var(--card);border:1.5px solid var(--line);font-size:15px;font-weight:700;box-shadow:0 2px 0 var(--line);line-height:1.25;text-align:center}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn.on{background:#ffe0dc;border-color:var(--red);color:#8f2a22}
.btn.primary{background:var(--teal);border-color:var(--teal-d);color:#fff;box-shadow:0 2px 0 var(--teal-d)}
.btn.wide{grid-column:1/-1}
.btn{flex-wrap:wrap}
.btn small{display:block;width:100%;font-weight:400;font-size:12px;opacity:.8}
.panel{background:var(--paper);border:1.5px solid var(--line);border-radius:16px;padding:12px 14px;margin:10px 0}
.panel h3{font-family:var(--display);font-weight:400;font-size:17px;margin:0 0 6px}
.panel canvas{display:block;width:100%;height:110px}
.read{display:flex;gap:12px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.read b{color:var(--ink);font-size:16px}
.hint{font-size:13.5px;color:var(--muted);margin:8px 2px}
.fact{background:#fff4d1;border:1.5px solid #ecd27e;border-radius:14px;padding:10px 12px;font-size:14px;margin:10px 0}
a{color:var(--teal-d)}
.foot{font-size:12px;color:var(--muted);margin-top:16px;line-height:1.6}