:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;color:#173b50;background:#e9f5f2}*{box-sizing:border-box}body{margin:0;background:linear-gradient(140deg,#e2f5ee,#f7fbfd 60%,#fff4e8);min-height:100vh}[hidden]{display:none!important}button,select,input{font:inherit}button{cursor:pointer}button:disabled{opacity:.47;cursor:not-allowed}.app{max-width:760px;margin:auto;padding:calc(env(safe-area-inset-top) + 15px) 14px calc(env(safe-area-inset-bottom) + 25px)}.head{display:flex;align-items:center;gap:13px;margin-bottom:12px}.logo{display:grid;place-items:center;flex:0 0 58px;height:58px;border-radius:18px;background:linear-gradient(135deg,#1d4b60,#078e7f);font-size:29px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.5px;color:#59858d}.head h1{font-size:clamp(21px,5vw,30px);letter-spacing:-.7px;margin:2px 0}.head p{margin:0;color:#66818a;font-size:14px}.back{display:inline-block;border:1px solid #c7e0e0;background:#fff;border-radius:11px;padding:10px 14px;color:#185e6b;text-decoration:none;font-size:13px;font-weight:700;margin-bottom:12px}.panel{background:#fff;border:1px solid #d6e8e8;border-radius:22px;padding:18px;margin:12px 0;box-shadow:0 6px 21px #173b500b}.panel-top{display:flex;justify-content:space-between;gap:10px;align-items:center}.kicker,.session-head{font-size:12px;font-weight:850;letter-spacing:1.25px;color:#577985}.pill{border-radius:30px;padding:7px 11px;background:#e8f6f0;font-size:11px;font-weight:750;color:#22796c}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}.stats>div{background:#f0f8f6;border-radius:14px;min-height:83px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:8px;text-align:center}.stats strong{font-size:27px;color:#146e6b}.stats span{font-size:11px;color:#718d94}.helper{font-size:12px;line-height:1.6;color:#6d8790;margin:10px 0 0}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin:14px 0}.field-grid label{display:flex;flex-direction:column;gap:6px;color:#557886;font-size:12px;font-weight:800}.field-grid select,.field-grid input{width:100%;border:1px solid #c7dfe1;color:#173b50;border-radius:11px;background:#fafdfd;padding:12px 9px;font-size:13px;min-width:0}.button-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:11px}.button{border:1px solid transparent;border-radius:12px;padding:13px 8px;font-size:13px;font-weight:800;line-height:1.3}.primary{background:linear-gradient(125deg,#16465b,#098b7a);color:#fff}.secondary{background:#f7fbfb;border-color:#c7dde0;color:#266073}.success{background:#198767;color:#fff}.warning{background:#fff9f3;border-color:#dfb783;color:#985e24}.session-head{display:flex;justify-content:space-between}.track{height:8px;background:#e7eeee;border-radius:20px;margin:13px 0}.track>div{height:100%;width:0;background:#16a38a;border-radius:20px;transition:width .2s}.flashcard{width:100%;min-height:300px;border:1px solid #d7e7e8;border-radius:20px;background:linear-gradient(145deg,#f9fdfd,#fff7ec);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;gap:15px}.card-topline{font-size:11px;font-weight:750;color:#64848d;letter-spacing:1px}.prompt{font-size:clamp(45px,13vw,91px);font-weight:700;color:#102735;line-height:1.3;overflow-wrap:anywhere;text-align:center;max-width:100%}.tap-hint{color:#7d989d;font-size:12px;text-align:center}.solution{width:100%;border-top:1px solid #cfe4dd;padding-top:15px;text-align:center;color:#147967}.solution strong{font-size:clamp(19px,5.5vw,25px);overflow-wrap:anywhere}.backup p{font-size:13px;color:#65818b;line-height:1.6}.small-note{font-size:11px!important}footer{text-align:center;margin:20px 0;color:#7c97a1;line-height:1.8;font-size:11px;font-weight:700;letter-spacing:.6px}footer strong{color:#236b76}@media(max-width:390px){.app{padding-left:10px;padding-right:10px}.panel{padding:13px}.field-grid{grid-template-columns:1fr}.button{font-size:12px;padding:12px 5px}}