:root{color-scheme:light;--ink:#182226;--sub:#6d797a;--line:#dce2df;--accent:#165e52}*{box-sizing:border-box}body{margin:0;background:#f3f4ef;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif}main{max-width:1080px;margin:auto;padding:32px 42px}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:52px}a{color:inherit;text-decoration:none}.brand{font-weight:650;letter-spacing:1px}.brand span{font-weight:400;margin-left:12px;color:var(--sub)}header small,.eyebrow{font-size:11px;letter-spacing:2px;color:var(--sub)}h1{font-size:64px;line-height:1.18;letter-spacing:-3px;margin:22px 0}h1 span{color:var(--accent)}.lead{color:var(--sub);font-size:17px;line-height:1.7}.choices{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:34px 0}.card{padding:28px;background:#e8ece5;border:1px solid #d5ddd4;border-radius:18px;transition:transform .2s,background .2s}.card:nth-child(2){background:#e8edef}.card:hover{transform:translateY(-4px);background:#dfe8df}.card small{letter-spacing:2px;color:var(--sub)}.symbol{font-size:80px;line-height:1.2;color:var(--accent);margin:20px 0}.card h2{font-size:26px;margin:16px 0 8px}.card p{color:var(--sub);font-size:15px}.card strong{display:block;margin-top:26px;font-size:13px}.fine{font-size:12px;line-height:1.8;color:var(--sub);margin:18px 0}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:10px;padding:13px 21px;color:var(--ink);min-height:44px}button:disabled{opacity:.4;cursor:default}.primary{background:var(--accent);color:white;border-color:var(--accent)}.plain{background:none;border:0;padding:12px 0;font-size:14px;color:var(--sub);display:inline-block}.topline{display:flex;justify-content:space-between;font-size:13px;color:var(--sub)}.title{font-size:36px;letter-spacing:-1px;margin-bottom:12px}.hint{font-size:15px;line-height:1.7;color:var(--sub);min-height:26px}.stage{position:relative;background:radial-gradient(ellipse at 50% 35%,#fff 0,#e9ede9 70%);border:1px solid var(--line);border-radius:22px;overflow:hidden;height:440px;margin:24px 0 18px}.stage:after{content:'';position:absolute;left:35%;right:35%;height:20px;bottom:40px;border-radius:50%;background:#14261c20;filter:blur(18px);pointer-events:none}#cube{position:absolute;inset:0}canvas{display:block;touch-action:none;cursor:grab;width:100%;height:100%}.stage-label{position:absolute;top:22px;left:24px;font-size:10px;letter-spacing:2px;color:#86938d;z-index:1;pointer-events:none}.view{position:absolute;bottom:14px;right:16px;border:0;background:#ffffffa0;font-size:12px;padding:8px 12px;z-index:2}#move-cue{position:absolute;bottom:21px;left:24px;font-size:13px;color:var(--accent);pointer-events:none}.layer-line{display:flex;align-items:center;justify-content:center;gap:15px}.layer-line label{font-size:13px;color:var(--sub)}select{padding:10px 15px;border:1px solid var(--line);border-radius:8px;background:white}.turns{display:flex;justify-content:center;gap:12px;margin-top:12px}.turns button{min-width:140px}#layer-panel{text-align:center}#controls{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}#feedback{line-height:1.6;color:var(--accent);min-height:25px}.secondary{display:flex;gap:30px}#sequence{font-size:13px;color:var(--sub);min-height:22px;line-height:1.7}.record{background:white;padding:20px;margin:12px 0;border-radius:12px}.record p{color:var(--sub);font-size:13px;line-height:1.8}footer{border-top:1px solid var(--line);margin-top:44px;padding-top:20px;font-size:11px;color:var(--sub);display:flex;justify-content:space-between}[hidden]{display:none!important}:focus-visible{outline:3px solid #80bfa7;outline-offset:4px}@media(max-width:600px){main{padding:22px 20px}header{margin-bottom:30px}header small{display:none}.brand span{font-size:12px}h1{font-size:44px;letter-spacing:-2px}.choices{grid-template-columns:1fr;gap:12px}.card{padding:22px;position:relative}.symbol{position:absolute;right:22px;top:28px;font-size:55px}.card h2{font-size:23px}.card strong{margin-top:20px}.title{font-size:28px}.stage{height:360px;margin-top:18px}.hint{font-size:14px}.stage-label{top:15px;left:16px}.topline{font-size:12px}.turns button{min-width:120px}#controls button{flex:1}.fine{font-size:12px}}

#countdown{font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;margin:12px 0}#countdown.urgent{color:#b83531}
.view-tools{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 18px}.view-tools .view{position:static;min-height:44px;background:#fff}.view-tools .plain{padding:10px 12px;border:1px solid var(--line);border-radius:10px;min-height:44px}#move-cue{left:16px;right:16px;bottom:14px;font-size:12px;line-height:1.5}#controls .restart-test{order:10;background:transparent;border-color:transparent;color:var(--sub);font-size:13px;flex:0 0 100%;text-align:left;padding:10px 0}#controls .primary{min-height:48px}@media(max-width:600px){.view-tools{gap:6px}.view-tools button{font-size:12px}.view-tools .plain{flex-basis:100%;text-align:left}.stage{height:330px}}
.journey-link{display:inline-block;padding:14px 20px;border-radius:10px;margin:16px 10px 16px 0}dialog{border:1px solid var(--line);border-radius:20px;padding:30px;max-width:480px;width:90%;color:var(--ink);background:#f3f4ef}dialog::backdrop{background:#15271c88}video{width:100%;max-height:420px;background:#17231e;border-radius:14px;margin:16px 0}textarea{display:block;width:100%;min-height:100px;padding:16px;margin:18px 0;border:1px solid var(--line);border-radius:12px;font:inherit}input[type=file]{display:block;margin:20px 0;max-width:100%}details{padding:18px;border:1px solid var(--line);border-radius:12px;margin:20px 0}

.celebrate{text-align:center;overflow:hidden;padding:36px 26px;background:#f6f6ee;box-shadow:0 24px 100px #071d2244}.celebrate h2{font-size:25px;position:relative;z-index:1}.rank-badge{display:inline-block;background:#deebe2;color:#215846;border-radius:20px;padding:7px 15px;font-size:13px;letter-spacing:2px}.rank-number{font-size:100px;font-weight:800;letter-spacing:-6px;line-height:1.05;color:#165e52;font-variant-numeric:tabular-nums}.rank-note{font-size:13px;color:#52665c;line-height:1.7}.rank-facts{font-size:14px;border-top:1px solid #d5dfd6;padding-top:20px}.confetti{position:absolute;top:-20px;width:8px;height:15px;pointer-events:none;animation:confetti-fall 2s var(--delay) both}.celebrate button,.celebrate a{position:relative;z-index:2}@keyframes confetti-fall{to{transform:translateY(620px) rotate(var(--spin));opacity:0}}@media(prefers-reduced-motion:reduce){.confetti{display:none}}

@media(max-width:600px){.memory-mode #move-cue{top:40px;bottom:auto;left:16px;right:16px;text-align:center;font-size:12px}}