:root{
  color-scheme:light;
  --bg:#f6f4ee;
  --paper:#fffdf8;
  --ink:#191816;
  --muted:#55524c;
  --line:#d9d5cb;
  --soft:#ece8de;
  --accent:#173a2d;
  --accent-2:#dce9e1;
  --warn:#7a2f25;
  --warn-soft:#f5e1dd;
  --ok:#215c43;
  --shadow:0 16px 45px rgba(35,31,24,.08);
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",Meiryo,sans-serif;line-height:1.55}
button,input{font:inherit}
button{touch-action:manipulation}
.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;min-height:58px;padding:10px max(16px,env(safe-area-inset-left));background:rgba(246,244,238,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,213,203,.75)}
.brand{color:var(--ink);text-decoration:none;font-weight:800;letter-spacing:.05em}
.text-btn{border:0;background:transparent;color:var(--muted);padding:10px 6px;cursor:pointer}
.shell{width:min(680px,100%);margin:0 auto;padding:34px 18px 56px}
footer{padding:0 20px calc(26px + env(safe-area-inset-bottom));text-align:center;color:var(--muted);font-size:12px}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--accent);text-transform:uppercase}
.hero h1{margin:12px 0 14px;font-size:clamp(34px,9vw,58px);line-height:1.08;letter-spacing:-.045em}
.lead{font-size:17px;color:#44413c;margin:0 0 22px}
.lead strong{color:var(--ink)}
.promise{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:20px 0 24px}
.promise span{padding:11px 8px;border:1px solid var(--line);border-radius:12px;background:rgba(255,253,248,.55);text-align:center;font-size:13px;font-weight:700}
.primary,.secondary{width:100%;min-height:56px;border-radius:16px;border:1px solid transparent;padding:14px 18px;font-weight:800;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease,background .12s ease}
.primary{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(23,58,45,.18)}
.primary:active,.secondary:active,.choice:active,.hold:active{transform:scale(.985)}
.secondary{background:var(--paper);color:var(--ink);border-color:var(--line)}
.previous{margin-top:18px;padding:14px 16px;border-left:3px solid var(--accent);background:var(--accent-2);font-size:14px}
.section-title{font-size:25px;line-height:1.25;margin:8px 0 8px;letter-spacing:-.02em}
.section-copy{margin:0 0 20px;color:var(--muted)}
.category-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.category{border:1px solid var(--line);background:var(--paper);border-radius:16px;text-align:left;padding:16px;min-height:102px;cursor:pointer;box-shadow:0 5px 16px rgba(35,31,24,.04)}
.category b{display:block;font-size:16px;margin-bottom:5px}
.category span{font-size:12px;color:var(--muted)}
.category.selected{border-color:var(--accent);box-shadow:0 0 0 2px rgba(23,58,45,.08)}
.custom-wrap{margin-top:12px;padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:16px}
.custom-wrap label{display:block;font-size:13px;font-weight:800;margin-bottom:8px}
.custom-wrap input{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px 14px;background:#fff;color:var(--ink);outline:none}
.custom-wrap input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(23,58,45,.08)}
.actions{display:grid;gap:10px;margin-top:16px}
.progress-head{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:.04em;margin-bottom:8px}
.progress{height:7px;background:var(--soft);border-radius:999px;overflow:hidden;margin-bottom:18px}
.progress i{display:block;height:100%;background:var(--accent);border-radius:inherit;transition:width .25s ease}
.trial{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}
.pressure{display:inline-flex;align-items:center;gap:7px;padding:7px 10px;border-radius:999px;background:#efebe1;color:#4e4a43;font-size:12px;font-weight:800;margin-bottom:14px}
.pressure.urgent{background:var(--warn-soft);color:var(--warn)}
.instruction{font-size:24px;font-weight:850;line-height:1.3;letter-spacing:-.025em;margin:4px 0 18px}
.cue{display:flex;align-items:center;justify-content:center;min-height:76px;border:1px dashed #c8c2b5;border-radius:16px;background:#faf8f2;color:#4a4741;text-align:center;padding:12px;margin-bottom:14px}
.hold{position:relative;overflow:hidden;width:100%;min-height:66px;border:0;border-radius:16px;background:#e6e1d6;color:#2c2925;font-weight:850;cursor:pointer;user-select:none;-webkit-user-select:none}
.hold span{position:relative;z-index:2}
.hold::before{content:"";position:absolute;inset:0 auto 0 0;width:var(--hold-progress,0%);background:var(--accent-2);transition:width .05s linear}
.hold.ready{background:var(--accent-2);color:var(--accent)}
.choices{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.choice{min-height:74px;border-radius:16px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:900;font-size:19px;cursor:pointer;position:relative}
.choice.locked{cursor:pointer;color:#5d5a54;background:#f2efe8}
.choice.correct{border-color:var(--ok);background:#e6f0e9;color:var(--ok)}
.choice.wrong{border-color:var(--warn);background:var(--warn-soft);color:var(--warn)}
.shake{animation:shake .28s ease}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.feedback{min-height:44px;margin-top:14px;padding:10px 12px;border-radius:12px;background:#f2efe8;color:#4d4943;font-size:14px}
.feedback.ok{background:#e6f0e9;color:var(--ok)}
.feedback.warn{background:var(--warn-soft);color:var(--warn)}
.mini{font-size:12px;color:var(--muted);margin-top:8px}
.result-card{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}
.result-card h2{margin:8px 0 6px;font-size:30px;line-height:1.2;letter-spacing:-.03em}
.big-score{display:flex;align-items:flex-end;gap:8px;margin:24px 0}
.big-score strong{font-size:64px;line-height:.9;letter-spacing:-.05em}
.big-score span{font-size:16px;color:var(--muted);padding-bottom:6px}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:20px 0}
.metric{padding:14px 8px;border:1px solid var(--line);border-radius:14px;text-align:center;background:#fff}
.metric strong{display:block;font-size:22px}
.metric span{font-size:12px;color:var(--muted)}
.rule{margin:20px 0;padding:18px;border-radius:16px;background:var(--accent-2);color:#173a2d}
.rule small{display:block;font-size:12px;font-weight:900;letter-spacing:.08em;margin-bottom:6px}
.rule strong{display:block;font-size:19px;line-height:1.4}
.history{margin-top:16px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;font-size:13px;color:var(--muted)}
.history b{color:var(--ink)}
@media (max-width:520px){
  .shell{padding-top:26px}
  .hero h1{font-size:39px}
  .promise{grid-template-columns:1fr}
  .category-grid{grid-template-columns:1fr}
  .trial{padding:18px}
  .instruction{font-size:21px}
  .metrics{grid-template-columns:1fr 1fr 1fr}
  .metric{padding:12px 4px}
  .metric strong{font-size:19px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}