:root{
  --bg:#fff7ef; --card:#ffffff; --ink:#3d3036; --sub:#8a7a80;
  --pink:#ff8fa3; --pink-d:#f06a85; --pink-l:#ffe3ea;
  --mint:#5ccfa8; --mint-l:#dcf7ec; --red:#ff6b6b; --red-l:#ffe4e4;
  --yellow:#ffd66b; --line:#f1e4dc; --radius:18px;
  --shadow:0 6px 0 #f3dcd2, 0 10px 24px rgba(160,100,90,.10);
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg);
  background-image:radial-gradient(#ffe1d6 1.2px, transparent 1.2px);
  background-size:18px 18px;
  color:var(--ink);
  font-family:"Hiragino Maru Gothic ProN","Hiragino Sans","Rounded Mplus 1c","M PLUS Rounded 1c","Noto Sans JP","Noto Sans CJK JP","Yu Gothic",Meiryo,system-ui,sans-serif;
  line-height:1.6; -webkit-text-size-adjust:100%;
}
.wrap{max-width:480px;margin:0 auto;padding:12px 16px calc(28px + env(safe-area-inset-bottom))}
.top{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 0}
.brand{text-align:center}
.brand h1{isolation:isolate;margin:0;font-size:22px;letter-spacing:.02em;font-weight:800}
.brand h1 span{color:var(--pink-d);position:relative}
.brand h1 span::after{content:"";position:absolute;left:0;right:0;bottom:1px;height:7px;background:var(--yellow);opacity:.55;z-index:-1;border-radius:4px}
.no{margin:0;font-size:12px;color:var(--sub);font-weight:700;letter-spacing:.1em}
.icon-btn{width:40px;height:40px;border-radius:50%;border:2px solid var(--line);background:#fff;font-size:17px;font-weight:800;color:var(--pink-d);cursor:pointer;flex:none}
.concept span{display:inline-block}
.concept{font-size:13px;color:var(--sub);text-align:center;margin:4px 0 14px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 16px;margin-bottom:18px;border:2px solid var(--line)}
.speaker{display:flex;gap:10px;align-items:flex-start}
.avatar{width:54px;height:54px;flex:none;margin-top:6px}
.bubble{position:relative;flex:1;background:var(--pink-l);border-radius:16px;padding:10px 14px 12px}
.bubble::before{content:"";position:absolute;left:-8px;top:20px;border:8px solid transparent;border-right-color:var(--pink-l);border-left:0}
.bubble-label{margin:0;font-size:11px;color:var(--pink-d);font-weight:700}
.broken{margin:2px 0 0;font-size:19px;font-weight:800;line-height:1.55;word-break:break-word}
.broken mark{background:linear-gradient(transparent 55%, #ffb3b3 55%);color:inherit}
.tries{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin:12px 2px 4px;font-size:12px;color:var(--sub);font-weight:700}
.dots{display:flex;gap:6px}
.dot{width:14px;height:14px;border-radius:50%;background:#eee3dd}
.dot.left{background:var(--pink)}
.dot.miss{background:var(--red)}
.dot.hit{background:var(--mint)}
.question{font-weight:800;margin:6px 0 10px;font-size:15px}
.options{display:grid;gap:10px}
.opt{display:flex;gap:10px;align-items:flex-start;text-align:left;width:100%;padding:12px 12px;border-radius:14px;border:2px solid var(--line);background:#fff;font:inherit;font-size:15px;color:var(--ink);cursor:pointer;box-shadow:0 3px 0 var(--line);transition:transform .08s, background .2s}
.opt:active{transform:translateY(2px);box-shadow:0 1px 0 var(--line)}
.opt .key{flex:none;width:26px;height:26px;border-radius:50%;background:var(--pink-l);color:var(--pink-d);font-weight:800;display:grid;place-items:center;font-size:13px}
.opt[disabled]{cursor:default}
.opt.wrong{background:var(--red-l);border-color:#ffc2c2;color:#b88;text-decoration:line-through;text-decoration-color:#e99}
.opt.wrong .key{background:var(--red);color:#fff}
.opt.correct{background:var(--mint-l);border-color:var(--mint);font-weight:800}
.opt.correct .key{background:var(--mint);color:#fff}
.opt.dim{opacity:.55}
.shake{animation:shake .35s}
@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
.hint{margin-top:14px;background:#fff8dc;border:2px dashed var(--yellow);border-radius:14px;padding:10px 12px;font-size:14px}
.hint b{color:#c7920f}
.free{margin-top:14px;font-size:14px}
.free summary{cursor:pointer;color:var(--sub);font-weight:700;padding:4px 0}
.free form{display:flex;gap:8px;margin-top:8px}
.free input{flex:1;min-width:0;font:inherit;font-size:16px;padding:10px 12px;border-radius:12px;border:2px solid var(--line);outline:none}
.free input:focus{border-color:var(--pink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:999px;background:var(--pink);color:#fff;font:inherit;font-weight:800;font-size:16px;padding:12px 20px;cursor:pointer;box-shadow:0 4px 0 var(--pink-d);text-decoration:none}
.btn:active{transform:translateY(2px);box-shadow:0 2px 0 var(--pink-d)}
.btn.small{font-size:14px;padding:8px 14px}
.btn.x{background:#222;box-shadow:0 4px 0 #000}
.result{text-align:center;animation:pop .35s ease-out}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:none;opacity:1}}
.result-title{font-size:22px;font-weight:800;margin:0 0 10px}
.compare{text-align:left;display:grid;gap:8px;background:#fffaf6;border-radius:14px;padding:10px 12px}
.row{display:flex;gap:8px;align-items:flex-start}
.row p{margin:0;font-weight:700}
.row mark{background:linear-gradient(transparent 55%, var(--yellow) 55%);color:inherit}
.tag{flex:none;font-size:11px;font-weight:800;color:#fff;border-radius:6px;padding:2px 7px;margin-top:3px}
.tag.bad{background:var(--red)} .tag.good{background:var(--mint)}
.explain{margin:12px 0 4px;font-size:15px}
.explain::before{content:"💡 "}
.share-preview{font-family:inherit;background:#f7f2ef;border-radius:12px;padding:10px;margin:14px auto 12px;font-size:14px;white-space:pre-wrap;display:inline-block;text-align:left;min-width:70%}
.share-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.next{margin-top:16px;border-top:2px dashed var(--line);padding-top:10px}
.next p{margin:0;font-size:13px;color:var(--sub);font-weight:700}
.countdown{font-size:30px!important;color:var(--ink)!important;letter-spacing:.06em;font-variant-numeric:tabular-nums}
.stats h2{margin:0 0 10px;font-size:17px;text-align:center}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.stat-grid b{display:block;font-size:24px}
.stat-grid span{font-size:11px;color:var(--sub)}
.dist{margin-top:12px;display:grid;gap:6px}
.bar{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700}
.bar i{display:block;height:20px;min-width:22px;background:#eadfd8;border-radius:6px;color:#fff;font-style:normal;text-align:right;padding-right:6px;line-height:20px;font-size:12px}
.bar i.me{background:var(--mint)}
footer{text-align:center;font-size:13px;color:var(--sub)}
footer a{color:var(--pink-d);font-weight:700;text-decoration:none}
footer .small{font-size:11px}
dialog{border:0;border-radius:20px;padding:20px;max-width:360px;width:calc(100% - 32px);box-shadow:0 20px 50px rgba(0,0,0,.2);color:var(--ink);font-family:inherit}
dialog::backdrop{background:rgba(60,40,45,.4)}
dialog h2{margin:0 0 8px;text-align:center}
dialog ul{padding-left:1.2em;font-size:14px}
dialog form{text-align:center}
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#3d3036;color:#fff;padding:10px 18px;border-radius:999px;font-weight:700;font-size:14px;opacity:0;pointer-events:none;transition:.25s}
.toast.show{opacity:1;transform:translate(-50%,0)}
[hidden]{display:none!important}