:root{--primary-color:#2563eb;--secondary-color:#1d4ed8;--background-color:#f5f7fb;--text-color:#1f2937;--muted-text:#6b7280;--border-radius:8px;--card-background:#ffffff;--border-color:#e5e7eb}*{box-sizing:border-box;margin:0;padding:0}body,html{min-height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--background-color);color:var(--text-color);line-height:1.45}.tool-card,a,body,button,html,select{-webkit-tap-highlight-color:transparent}a:focus:not(:focus-visible),button:focus:not(:focus-visible),select:focus:not(:focus-visible){outline:none}a{color:inherit;text-decoration:none}button{font:inherit}.page-shell{min-height:100vh;padding:48px 16px;display:grid;place-items:center;background:radial-gradient(circle at 20% 15%,rgba(99,102,241,.15),transparent 50%),radial-gradient(circle at 85% 90%,rgba(14,165,233,.12),transparent 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6px;border-radius:4px}@media (hover:hover) and (pointer:fine){.vocab-banned-reset:hover{background:rgba(37,99,235,.08)}}.vocab-answered-actions{display:flex;gap:8px}.vocab-answered-actions .vocab-next{flex:1 1 auto}.vocab-ban{background:transparent;border:1px solid var(--border-color);color:var(--muted-text);padding:8px 12px;border-radius:8px;font-size:12px;font-weight:500;cursor:pointer;transition:color .15s ease,border-color .15s ease}@media (hover:hover) and (pointer:fine){.vocab-ban:hover:not(:disabled){color:#dc2626;border-color:rgba(239,68,68,.6)}}.vocab-ban:disabled{opacity:.55;cursor:default}.repeat-card{gap:16px}.repeat-audio-block{display:flex;flex-direction:column;align-items:stretch;padding:12px 0}.repeat-play{display:inline-flex;justify-content:center;align-items:center;gap:10px;background:linear-gradient(90deg,#0ea5e9,#0284c7);color:#fff;border:none;border-radius:10px;padding:14px 18px;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .15s ease,transform .1s ease;box-shadow:0 6px 16px rgba(2,132,199,.25)}@media (hover:hover) and (pointer:fine){.repeat-play:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 20px rgba(2,132,199,.35)}}.repeat-play:disabled{opacity:.55;cursor:default;box-shadow:none;transform:none}.repeat-text{padding:12px 14px;border-radius:8px;background:var(--background-color);border:1px solid var(--border-color);font-size:15px;line-height:1.5;color:var(--text-color)}.repeat-actions{display:flex;gap:8px}.repeat-actions .vocab-next{flex:1 1 auto}