:root{color-scheme:dark;--bg:#202b3c;--panel:#2a374b;--panel-light:#344359;--ink:#f2f2ed;--muted:#b5c0cf;--line:#49576b;--mint:#a9e8db;--rose:#edb3c5;--mono:ui-monospace,SFMono-Regular,Consolas,monospace;--sans:Inter,Segoe UI,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 5%,#35475d55,transparent 52%),var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55}button,a,input,textarea{ -webkit-tap-highlight-color:transparent}button,input,textarea{font:inherit}button{cursor:pointer;color:inherit}button:disabled{cursor:default}a{color:inherit}button{border:0}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--mint);outline-offset:5px}[hidden]{display:none!important}.topbar{max-width:1120px;margin:auto;padding:28px 36px;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;gap:13px;text-decoration:none;align-items:center;font-size:12px;font-weight:800;letter-spacing:2px;line-height:1.25}.brand-icon{font-size:36px;color:var(--mint);font-weight:400;transform:skew(-12deg)}.brand-bottom{display:block;font-size:21px;letter-spacing:1.5px}.brand-dot{color:var(--rose)}.header-actions{display:flex;gap:16px;align-items:center}.quiet{padding:8px 0;background:transparent;color:var(--muted);font-size:13px}.quiet:hover{color:var(--ink)}.icon-btn{width:36px;height:36px;border:1px solid var(--line);border-radius:50%;background:transparent;font-size:20px}main{max-width:1048px;margin:0 auto;padding:32px 36px 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canvas{display:block;width:100%;height:100%}.road-label{position:absolute;bottom:15px;left:0;right:0;text-align:center;font-family:var(--mono);font-size:9px;letter-spacing:2px;color:#e0e6efb0;pointer-events:none}.home-play{display:flex;gap:25px;align-items:center;justify-content:space-between;padding:28px 0;border-bottom:1px solid var(--line)}.home-play h2{font-size:22px;margin-top:8px}.home-play p{color:var(--muted);font-size:14px;margin:0}.primary,.secondary{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:26px;padding:13px 22px;border-radius:9px;font-weight:700;font-size:14px;transition:background .2s,transform .2s}.primary{background:var(--mint);color:#203c3c}.primary:hover{background:#c1f5eb;transform:translateY(-1px)}.secondary{background:var(--panel-light);color:var(--ink);border:1px solid var(--line)}.secondary:hover{background:#40516a}.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}.mode-card{text-align:left;position:relative;padding:21px 19px;display:grid;gap:7px;background:var(--panel);border:1px solid #49576b99;border-radius:12px;transition:border-color .2s,background .2s}.mode-card:hover{background:#324258;border-color:var(--mint)}.mode-symbol{font-size:25px;color:var(--rose);line-height:1.1}.mode-card strong{font-size:16px}.mode-card>span:not(.mode-symbol){font-size:12px;color:var(--muted)}.mode-card b{position:absolute;right:18px;top:18px;color:var(--muted);font-size:17px;font-weight:400}.content-note{font-size:12px;color:var(--muted);line-height:1.8;max-width:720px}.game-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:20px}.progress{display:flex;gap:7px;margin-bottom:30px}.progress i{height:3px;flex:1;background:#566176;border-radius:9px}.progress i.past{background:var(--mint)}.progress i.current{background:var(--rose)}.question-heading{text-align:center;max-width:700px;margin:0 auto 24px}.question-heading 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