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var(--border);border-radius:8px;min-height:44px;padding:8px}.pp-empty{text-align:center;background:var(--card);border:1px solid var(--border);border-radius:20px;min-height:300px;padding:45px 24px}.pp-empty-knight{color:var(--primary);font-family:Georgia,serif;font-size:60px}.pp-empty h2{margin:15px 0;font-size:25px;font-weight:800}.pp-empty p{color:var(--muted-foreground);max-width:500px;margin:12px auto;font-size:14px;line-height:1.6}.pp-empty .pp-primary{max-width:300px;margin:24px auto 0}.pp-footnote{text-align:center;color:var(--muted-foreground);max-width:770px;margin:26px auto 0;font-size:11px;line-height:1.7}.pp-footnote p+p{margin-top:7px}.pp-footnote a{text-underline-offset:3px;text-decoration:underline}@media (width>=1250px){.pp-piece{font-size:56px}}@media (width<=1000px){.pp-intro{gap:25px}.pp-daily-card{gap:12px;padding:24px}.pp-daily-icon{font-size:48px}.pp-topics 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label{flex-direction:column;align-items:flex-start;gap:5px}.pp-session-bar strong{font-size:13px}.pp-session-bar .pp-eyebrow{font-size:9px}.pp-play-layout{grid-template-columns:1fr}.pp-board-card{padding:12px}.pp-piece{font-size:clamp(28px,8.5vw,60px)}.pp-coach-card{padding:23px}.pp-tools button{font-size:13px}.pp-tools svg{width:17px}.pp-feedback{margin-top:17px}.pp-footnote{text-align:left}.pp-empty{padding:30px 18px}.pp-empty h2{font-size:23px}}@media (prefers-reduced-motion:reduce){.puzzle-playground *{transition:none!important}}.pp-session-controls{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;display:flex}.pp-sound-toggle{border:1px solid var(--border);background:var(--card);min-height:44px;color:var(--foreground);border-radius:10px;justify-content:center;align-items:center;gap:7px;padding:8px 12px;font-size:12px;display:inline-flex}@media (width<=760px){.pp-session-controls{gap:8px}.pp-sound-toggle{padding:8px}.pp-session-bar{flex-wrap:wrap}}