:root{color-scheme:dark;--bg:#090909;--panel:#151515;--panel2:#1d1d1d;--text:#fffdf7;--muted:#aaa69d;--acid:#f7ff54;--red:#ff5d4d;--green:#72ef9f;--line:#ffffff18;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Hiragino Sans","Yu Gothic",sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;min-height:100%;background:var(--bg)}body{overscroll-behavior:none}button,input{font:inherit}button{cursor:pointer}.app{min-height:100svh;background:radial-gradient(circle at 50% -10%,#2a2a17 0,transparent 34%),linear-gradient(180deg,#0d0d0d,#060606);color:var(--text);display:flex;justify-content:center}.shell{width:min(100%,520px);min-height:100svh;padding:max(14px,env(safe-area-inset-top)) 16px max(16px,env(safe-area-inset-bottom));display:flex;flex-direction:column;overflow:hidden}.top{min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:10px}.brand{display:flex;align-items:center;gap:8px;font-weight:1000;letter-spacing:-.04em}.mark{width:29px;height:29px;display:grid;place-items:center;border-radius:9px;background:var(--acid);color:#101010;font-weight:1000}.muted{color:var(--muted);font-size:12px}.small{font-size:12px}.center{text-align:center}.hero{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px 6px}.hero-kicker{font-size:12px;font-weight:1000;letter-spacing:.16em;color:var(--acid)}.hero h1{font-size:clamp(58px,18vw,92px);line-height:.88;margin:14px 0 18px;letter-spacing:-.085em}.hero p{max-width:380px;margin:0 auto 22px;color:var(--muted);font-size:15px;line-height:1.8}.hero strong{color:var(--text)}.rule{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:8px 0 22px}.rule div{border:1px solid var(--line);border-radius:18px;background:#ffffff08;padding:14px 11px;min-height:88px}.rule b{display:block;font-size:24px;margin-bottom:6px}.rule span{font-size:12px;line-height:1.5;color:var(--muted)}.btn{width:100%;min-height:58px;border:0;border-radius:18px;font-weight:1000;font-size:17px;transition:transform .08s ease,filter .15s ease}.btn:active{transform:scale(.98)}.btn.primary{background:var(--acid);color:#111}.btn.ghost{background:#ffffff0b;color:var(--text);border:1px solid var(--line)}.btn.danger{background:#ff5d4d20;color:#ffd8d3;border:1px solid #ff5d4d44}.hud{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;margin:10px 0 2px}.track{height:8px;background:#ffffff12;border-radius:99px;overflow:hidden}.fill{height:100%;background:var(--acid);transition:width .22s ease}.score{font-size:12px;color:var(--muted);white-space:nowrap}.score b{color:var(--text)}.arena{flex:1;min-height:430px;position:relative;display:flex;align-items:center;justify-content:center;touch-action:none;user-select:none}.shadow-card,.card{position:absolute;width:calc(100% - 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