.kat-tool{--kat-ink:#25304a;--kat-purple:#7c3aed;--kat-purple-dark:#6d28d9;--kat-pink:#ec4899;--kat-yellow:#f59e0b;--kat-blue:#2563eb;--kat-green:#16a34a;--kat-red:#dc2626;--kat-muted:#64748b;position:relative;isolation:isolate;overflow:hidden;padding:clamp(1rem,3vw,2rem);border:1px solid #ede9fe;border-radius:24px;background:linear-gradient(145deg,#fdfcff 0%,#f5f3ff 55%,#fff7ed 100%);color:var(--kat-ink);box-shadow:0 18px 50px rgba(91,33,182,.09)}
.kat-shape{position:absolute;z-index:-1;display:grid;place-items:center;border-radius:50%;font-weight:900;pointer-events:none}
.kat-shape-one{width:180px;height:180px;right:-70px;top:-75px;background:#ede9fe;color:rgba(124,58,237,.1);font-size:5rem;transform:rotate(12deg)}
.kat-shape-two{width:150px;height:150px;left:-70px;bottom:-80px;background:#ffedd5;color:rgba(249,115,22,.11);font-size:5rem;transform:rotate(-14deg)}
.kat-hero{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;margin-bottom:1.25rem}
.kat-brand{display:flex;align-items:center;gap:1rem;min-width:260px}
.kat-logo{position:relative;width:65px;height:65px;display:grid;place-items:center;flex:0 0 auto;border:4px solid #fff;border-radius:20px;background:linear-gradient(145deg,#a78bfa,var(--kat-purple));color:#fff;font-size:2rem;font-weight:900;box-shadow:0 9px 22px rgba(124,58,237,.25);transform:rotate(-4deg)}
.kat-logo small{position:absolute;right:-8px;bottom:-8px;width:27px;height:27px;display:grid;place-items:center;border:3px solid #fff;border-radius:9px;background:var(--kat-pink);font-size:.8rem}
.kat-kicker{display:block;color:var(--kat-purple);font-size:.68rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.kat-hero h2{margin:.15rem 0 .2rem;color:var(--kat-ink);font-size:clamp(1.5rem,3vw,2rem);line-height:1.1}
.kat-hero p{max-width:36rem;margin:0;color:var(--kat-muted);font-size:.92rem}
.kat-stats{display:grid;grid-template-columns:repeat(4,minmax(78px,1fr));gap:.55rem}
.kat-stat{display:flex;align-items:center;gap:.45rem;min-width:82px;padding:.65rem .7rem;border:1px solid #ede9fe;border-radius:14px;background:rgba(255,255,255,.9);box-shadow:0 4px 12px rgba(91,33,182,.05)}
.kat-stat-icon{width:27px;height:27px;display:grid;place-items:center;flex:0 0 auto;border-radius:9px;background:#f5f3ff;color:var(--kat-purple);font-size:.78rem;font-weight:900}
.kat-stat strong{display:block;color:var(--kat-ink);font-size:1.15rem;line-height:1;font-variant-numeric:tabular-nums}
.kat-stat small{display:block;margin-top:.15rem;color:var(--kat-muted);font-size:.56rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
.kat-tabs{display:flex;gap:.4rem;margin-bottom:1rem;padding:.3rem;border:1px solid #ddd6fe;border-radius:14px;background:rgba(255,255,255,.8)}
.kat-tab{display:inline-flex!important;align-items:center;justify-content:center;gap:.45rem;visibility:visible!important;flex:1;min-height:43px;padding:.55rem 1rem;border:0;border-radius:10px;background:transparent;color:#64748b;font:inherit;font-size:.8rem;font-weight:900;cursor:pointer}
.kat-tab span{width:25px;height:25px;display:grid;place-items:center;border-radius:7px;background:#f1f5f9;font-size:.68rem}
.kat-tab.is-active{background:#fff;color:var(--kat-purple-dark);box-shadow:0 4px 12px rgba(91,33,182,.12)}
.kat-tab.is-active span{background:#ede9fe;color:var(--kat-purple)}
.kat-panel{padding:clamp(.85rem,2vw,1.2rem);border:1px solid #ede9fe;border-radius:20px;background:rgba(255,255,255,.93);box-shadow:0 10px 28px rgba(91,33,182,.06)}
.kat-toolbar{display:flex;align-items:flex-end;gap:1rem;flex-wrap:wrap;margin-bottom:.65rem}
.kat-control-label{display:block;margin-bottom:.25rem;color:#64748b;font-size:.63rem;font-weight:900;letter-spacing:.07em;text-transform:uppercase}
.kat-case-switch{display:flex;padding:.25rem;border-radius:10px;background:#f5f3ff}
.kat-case-switch button{min-width:58px;padding:.38rem .55rem;border:0;border-radius:7px;background:transparent;color:#64748b;font:inherit;font-size:.72rem;font-weight:900;cursor:pointer}
.kat-case-switch button.is-active{background:#fff;color:var(--kat-purple);box-shadow:0 2px 7px rgba(91,33,182,.1)}
.kat-auto-speak{display:flex;align-items:center;gap:.45rem;min-height:34px;color:#475569;font-size:.75rem;font-weight:800;cursor:pointer}
.kat-auto-speak input{width:17px;height:17px;accent-color:var(--kat-purple)}
.kat-progress-copy{margin-left:auto;color:#64748b;font-size:.7rem;font-weight:800}
.kat-letter-progress{height:7px;overflow:hidden;border-radius:99px;background:#e2e8f0}
.kat-letter-progress span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--kat-purple),var(--kat-pink));transition:width .25s ease}
.kat-grid{display:grid;grid-template-columns:repeat(13,minmax(42px,1fr));gap:.42rem;margin-top:.8rem}
.kat-letter{--kat-letter-bg:#f8fafc;--kat-letter-border:#cbd5e1;--kat-letter-color:#334155;position:relative;display:grid!important;place-items:center;visibility:visible!important;min-width:0;min-height:51px;padding:.4rem;border:2px solid var(--kat-letter-border);border-radius:12px;background:var(--kat-letter-bg);color:var(--kat-letter-color);font:inherit;font-size:1.08rem;font-weight:900;cursor:pointer;box-shadow:0 3px 9px rgba(51,65,85,.06);transition:transform .15s,border-color .15s,background .15s,box-shadow .15s}
.kat-grid>.kat-letter:nth-child(6n+1){--kat-letter-bg:#fef2f2;--kat-letter-border:#fecaca;--kat-letter-color:#b91c1c}
.kat-grid>.kat-letter:nth-child(6n+2){--kat-letter-bg:#fff7ed;--kat-letter-border:#fed7aa;--kat-letter-color:#c2410c}
.kat-grid>.kat-letter:nth-child(6n+3){--kat-letter-bg:#fefce8;--kat-letter-border:#fde68a;--kat-letter-color:#a16207}
.kat-grid>.kat-letter:nth-child(6n+4){--kat-letter-bg:#f0fdf4;--kat-letter-border:#bbf7d0;--kat-letter-color:#15803d}
.kat-grid>.kat-letter:nth-child(6n+5){--kat-letter-bg:#eff6ff;--kat-letter-border:#bfdbfe;--kat-letter-color:#1d4ed8}
.kat-grid>.kat-letter:nth-child(6n+6){--kat-letter-bg:#faf5ff;--kat-letter-border:#e9d5ff;--kat-letter-color:#7e22ce}
.kat-letter:hover:not(:disabled),.kat-letter:focus-visible{z-index:1;transform:translateY(-2px);border-color:#a78bfa;outline:3px solid rgba(167,139,250,.2)}
.kat-letter.is-explored::after{content:"";position:absolute;right:4px;top:4px;width:6px;height:6px;border-radius:50%;background:#22c55e}
.kat-letter.is-active{border-color:var(--kat-purple)!important;background:var(--kat-purple)!important;color:#fff!important;box-shadow:0 6px 15px rgba(124,58,237,.24)}
.kat-letter.is-correct{border-color:#16a34a!important;background:#dcfce7!important;color:#14532d!important;box-shadow:0 5px 13px rgba(22,163,74,.16);animation:kat-pop .35s ease}
.kat-letter.is-wrong{border-color:#dc2626!important;background:#fee2e2!important;color:#7f1d1d!important;box-shadow:0 5px 13px rgba(220,38,38,.12);animation:kat-shake .35s ease}
.kat-letter:disabled:not(.is-correct):not(.is-wrong){opacity:.68}
.kat-detail{display:grid;grid-template-columns:auto auto 1fr auto;align-items:center;gap:1rem;margin-top:1rem;padding:1rem;border:1px solid #ddd6fe;border-radius:18px;background:linear-gradient(135deg,#faf5ff,#fff)}
.kat-detail-letter{width:96px;height:96px;display:grid;place-items:center;border:4px solid #fff;border-radius:22px;background:linear-gradient(145deg,#a78bfa,var(--kat-purple));color:#fff;font-size:3rem;font-weight:900;box-shadow:0 8px 20px rgba(124,58,237,.2)}
.kat-detail-copy{min-width:0}.kat-detail-label{color:var(--kat-purple);font-size:.62rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.kat-detail h3{margin:.15rem 0 .3rem;color:var(--kat-ink);font-size:1.15rem}
.kat-example{margin:0;color:var(--kat-ink);font-size:1.15rem}.kat-example strong{color:var(--kat-purple);font-size:1.35rem}
.kat-phonics{margin:.2rem 0 .65rem;color:#64748b;font-size:.78rem}
.kat-nav-button{display:grid!important;place-items:center;visibility:visible!important;width:38px;height:48px;padding:0;border:1px solid #ddd6fe;border-radius:11px;background:#fff;color:var(--kat-purple);font:inherit;font-size:1.7rem;font-weight:700;cursor:pointer}
.kat-nav-button:hover{background:#f5f3ff}
.kat-action,.kat-listen{display:inline-flex!important;align-items:center;justify-content:center;gap:.4rem;visibility:visible!important;min-height:42px;padding:.6rem .9rem;border:2px solid var(--kat-purple);border-radius:10px;font:inherit;font-size:.77rem;font-weight:900;line-height:1.2;cursor:pointer}
.kat-action-primary{background:var(--kat-purple)!important;color:#fff!important;box-shadow:0 6px 14px rgba(124,58,237,.2)}
.kat-action-primary:hover{border-color:var(--kat-purple-dark);background:var(--kat-purple-dark)!important}
.kat-action-outline,.kat-listen{border-color:#c4b5fd!important;background:#fff!important;color:var(--kat-purple-dark)!important}
.kat-action-outline:hover,.kat-listen:hover{background:#f5f3ff!important}
.kat-action:disabled{display:inline-flex!important;visibility:visible!important;cursor:not-allowed;opacity:.55}
.kat-quiz-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:.8rem}.kat-quiz-head h3{margin:.15rem 0 0;color:var(--kat-ink)}
.kat-quiz-setting{display:flex;flex-direction:column;gap:.25rem;color:#64748b;font-size:.62rem;font-weight:900;text-transform:uppercase}
.kat-quiz-setting select{min-height:38px;padding:.4rem 2rem .4rem .65rem;border:1px solid #c4b5fd;border-radius:9px;background:#fff;color:var(--kat-ink);font:inherit;font-size:.74rem;font-weight:800;text-transform:none}
.kat-quiz-progress{max-width:650px;margin:0 auto .85rem}.kat-round-row{display:flex;justify-content:space-between;gap:1rem;margin-bottom:.35rem;color:#64748b;font-size:.67rem;font-weight:900}
.kat-quiz-card{max-width:650px;margin:0 auto;padding:1.2rem;border:1px solid #ddd6fe;border-radius:18px;background:linear-gradient(145deg,#faf5ff,#fff);text-align:center}
.kat-quiz-prompt{margin:0 0 .25rem;color:#64748b;font-size:.78rem;font-weight:800}
.kat-quiz-target{color:var(--kat-purple);font-size:clamp(2.8rem,7vw,4.2rem);font-weight:900;line-height:1.1}.kat-quiz-target.is-word{font-size:clamp(1.8rem,5vw,2.7rem)}
.kat-listen{min-height:34px;margin:.55rem auto .2rem;padding:.35rem .65rem;border-width:1px;font-size:.68rem}
.kat-grid-quiz{grid-template-columns:repeat(6,1fr);max-width:540px;margin:.9rem auto}
.kat-quiz-choice{min-height:66px;font-size:1.35rem}.kat-choice-key{position:absolute;left:5px;top:5px;width:18px;height:18px;display:grid;place-items:center;border-radius:5px;background:#f1f5f9;color:#64748b;font-size:.55rem}
.kat-feedback{min-height:38px;margin:.65rem 0;padding:.55rem .7rem;border-radius:10px;color:#64748b;font-size:.76rem;font-weight:800}.kat-feedback.is-info{border:1px solid #bfdbfe;background:#eff6ff;color:#1e3a8a}.kat-feedback.is-success{border:1px solid #86efac;background:#dcfce7;color:#14532d}.kat-feedback.is-error{border:1px solid #fca5a5;background:#fee2e2;color:#7f1d1d}
.kat-quiz-actions{display:flex;justify-content:center;gap:.55rem}.kat-quiz-actions .kat-action{min-width:155px}
.kat-summary{max-width:650px;margin:1rem auto 0;padding:1.4rem;border:1px solid #fde68a;border-radius:18px;background:linear-gradient(135deg,#fffbeb,#fff7ed);text-align:center}
.kat-summary-badge{width:50px;height:50px;display:grid;place-items:center;margin:0 auto .55rem;border-radius:50%;background:#fef3c7;color:#d97706;font-size:1.4rem}.kat-summary h3{margin:.2rem 0;color:var(--kat-ink)}.kat-summary p{margin:.3rem auto .9rem;color:#64748b;font-size:.86rem}
.kat-footer{padding:.75rem .2rem 0;color:#64748b;text-align:center;font-size:.67rem}
@keyframes kat-pop{0%{transform:scale(1)}50%{transform:scale(1.08)}100%{transform:scale(1)}}@keyframes kat-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
@media(max-width:920px){.kat-hero{align-items:flex-start;flex-direction:column}.kat-stats{width:100%}.kat-grid{grid-template-columns:repeat(9,1fr)}}
@media(max-width:640px){.kat-tool{border-radius:18px}.kat-brand{align-items:flex-start}.kat-logo{width:54px;height:54px;border-radius:16px;font-size:1.6rem}.kat-stats{grid-template-columns:repeat(2,1fr)}.kat-stat{justify-content:center}.kat-tabs{flex-direction:column}.kat-toolbar{align-items:flex-start}.kat-progress-copy{width:100%;margin-left:0}.kat-grid{grid-template-columns:repeat(5,1fr)}.kat-detail{grid-template-columns:36px 1fr 36px;text-align:center}.kat-detail-letter{grid-column:2;width:86px;height:86px;margin:0 auto}.kat-detail-copy{grid-column:1/-1;grid-row:2}.kat-nav-button:first-child{grid-column:1;grid-row:1}.kat-nav-button:last-child{grid-column:3;grid-row:1}.kat-quiz-head{align-items:stretch;flex-direction:column}.kat-grid-quiz{grid-template-columns:repeat(3,1fr)}.kat-quiz-actions{flex-direction:column-reverse}.kat-quiz-actions .kat-action{width:100%}}
@media(max-width:380px){.kat-grid{grid-template-columns:repeat(4,1fr)}}
@media(prefers-reduced-motion:reduce){.kat-letter-progress span,.kat-letter{transition:none}.kat-letter.is-correct,.kat-letter.is-wrong{animation:none}}