:root{--paper:#f8f7f2;--surface:#fffefa;--ink:#243e34;--muted:#59675e;--line:#d9ded4;--sage:#e7eee3;--green:#315e46;--gold:#edc56e;--red:#9a3737;--red-bg:#fcf0ed;--radius:20px;--shadow:0 12px 40px #243e3406;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;line-height:1.6}
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.metric-card,.statistics-panel,.stats-empty{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px}
.metric-card p{font-size:.85rem;margin-bottom:10px}.metric-card strong{display:block;font-family:Georgia,serif;font-size:2.3rem;font-weight:400;line-height:1.2;margin-bottom:12px}.metric-card small{display:block;color:var(--muted);font-size:.73rem}
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.stage-list{display:grid;gap:12px}.stage-label{display:flex;justify-content:space-between;gap:12px;font-size:.8rem;margin-bottom:5px}.stage-track{height:7px;background:var(--sage);border-radius:8px;overflow:hidden}.stage-track div{height:100%;background:var(--green)}
.tricky-list,.recent-sessions{list-style:none;padding:0;margin:0}.tricky-list li,.recent-sessions li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.85rem}.tricky-list span,.recent-sessions span{font-size:.75rem;color:var(--muted);text-align:right}.recent-sessions small{display:block;font-size:.73rem;color:var(--muted)}.statistics-note{margin:24px 0 0}
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.hint-setting{display:flex;align-items:center;justify-content:center;gap:9px;min-height:44px;margin-top:8px;font-size:.78rem;color:var(--muted);cursor:pointer}
.hint-setting input{width:18px;height:18px;accent-color:var(--green);flex:none}
#audio-status:empty,#speech-status:empty{display:none}

@media(max-width:620px){.metric-card strong{font-size:1.6rem;white-space:nowrap}}