/* v37 exact literacy-stage presentation. */
.lit37-practice-flip{position:relative;width:min(620px,92vw);min-height:620px;margin:0 auto 20px;perspective:1400px}
.lit37-practice-face,.lit37-practice-back{position:absolute;inset:0;border-radius:38px;border:3px solid #fff;backface-visibility:hidden;transition:transform .5s cubic-bezier(.2,.8,.2,1);box-shadow:0 15px 0 #dfcce9,0 26px 42px #4d3a6018;overflow:hidden}
.lit37-practice-face{display:grid;place-items:center;align-content:center;gap:20px;background:radial-gradient(circle at 18% 18%,#fff2a8 0 8%,transparent 8.5%),radial-gradient(circle at 82% 78%,#9fe2c5 0 10%,transparent 10.5%),linear-gradient(145deg,#ffdce9,#eadfff 55%,#fff2b4)}
.lit37-practice-face small{font-weight:900;color:#6f657b}.lit37-practice-face strong{font:900 clamp(150px,38vw,330px)/.9 'DM Sans',sans-serif;color:#111;letter-spacing:-.06em}.lit37-practice-face button{border:0;border-radius:999px;padding:13px 20px;background:#30263f;color:#fff;font-weight:900;box-shadow:0 6px 0 #1e1728}
.lit37-practice-back{transform:rotateY(180deg);background:linear-gradient(145deg,#fff,#fffaf0);display:flex;flex-direction:column}
.lit37-practice-flip.show-back .lit37-practice-face{transform:rotateY(180deg)}.lit37-practice-flip.show-back .lit37-practice-back{transform:rotateY(360deg)}
.lit37-practice-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:#ffffffd9;border-bottom:1px solid #eee5f0;z-index:4}.lit37-practice-tools>span{font-size:12px;color:#706775;font-weight:800;text-align:end}.lit37-practice-back .lit36-canvas-card{width:100%;height:100%;aspect-ratio:auto;margin:0;border:0;border-radius:0;box-shadow:none;flex:1}
.lit37-audio-only{padding:18px;border-radius:24px;background:#fff;border:1px solid #eadff0;box-shadow:0 7px 0 #e7dceb}.lit37-audio-only .lit36-sound{margin-bottom:10px}.lit37-audio-speaking{padding-top:54px!important}.lit37-audio-speaking>.lit36-sound.big{margin:0 auto 18px}.lit37-audio-speaking:before{content:'♪';display:grid;place-items:center;width:90px;height:90px;margin:0 auto 20px;border-radius:30px;background:linear-gradient(145deg,#7b5aa2,#4a385e);color:#fff;font-size:42px;box-shadow:0 9px 0 #382a49}
.fast36-articles button p{color:#312b38;text-shadow:0 1px 0 #fff;font-family:'DM Sans',ui-monospace,monospace}.fast36-articles button:not(.active) p{color:#312b3859}.fast36-articles button.active p{color:#17131f;font-weight:900}
@media(max-width:600px){.lit37-practice-flip{min-height:520px}.lit37-practice-face,.lit37-practice-back{border-radius:30px}.lit37-practice-tools{align-items:flex-start;flex-direction:column}.lit37-practice-face strong{font-size:clamp(140px,45vw,230px)}}