:root{--bg:#13261d;--felt:#1d5a3c;--felt-dark:#154630;--panel:#fbfaf6;--panel-2:#f1eee4;--ink:#1d2320;--muted:#6b726e;--accent:#d9a23b;--accent-ink:#3a2a06;--safe:#2f9e57;--caution:#d9a23b;--danger:#d0453b;--best:#f5c542;color:var(--ink);font-family:Hiragino Sans,Noto Sans JP,Yu Gothic UI,Meiryo,system-ui,sans-serif}*{box-sizing:border-box}body{background:var(--bg);min-height:100vh;margin:0}button{font:inherit}.btn{color:var(--ink);cursor:pointer;background:#fff;border:1px solid #c9c2ad;border-radius:8px;align-items:center;gap:4px;padding:8px 16px;font-weight:600;transition:transform 50ms,background .15s;display:inline-flex}.btn:hover{background:#fff6dd}.btn:active{transform:translateY(1px)}.btn.small{padding:4px 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