@font-face{font-family:Lesen;src:local('Trebuchet MS')}*{box-sizing:border-box}html{color-scheme:light}body{margin:0;color:#243756;background:radial-gradient(ellipse at 95% 30%,#f0eaff 0,transparent 45%),linear-gradient(155deg,#e7f4ff,#f4f9ff 63%,#e9efff);font-family:Lesen,'Trebuchet MS',Arial,sans-serif;min-height:100vh;-webkit-tap-highlight-color:transparent}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit;border:0;touch-action:manipulation}button:disabled{opacity:.42;cursor:default}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid #1670bb;outline-offset:5px}button:active:not(:disabled){transform:translateY(2px)}svg{height:24px;width:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.icon-defs{position:absolute;width:0;height:0;overflow:hidden}.app-shell{max-width:1080px;margin:auto;padding:0 42px}header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #cedef080}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#293553;font-size:22px;font-weight:800;letter-spacing:-.5px}.brand small{display:block;margin-top:5px;font-size:10px;letter-spacing:2px;color:#7787a1;font-weight:700}.brand-mark{background:#6e54d8;color:#fff;box-shadow:0 3px 0 #5940be;border-radius:15px;width:46px;height:46px;display:grid;place-content:center;position:relative;font-family:Arial,sans-serif;font-size:36px;padding-bottom:5px}.brand-mark span{position:absolute;right:5px;top:0;font-size:22px;color:#ffdb91}.header-actions{display:flex;align-items:center;gap:20px}.lesson-tag{font-size:14px;color:#657892}.icon-button{width:44px;height:44px;border-radius:50%;background:#fff9;border:1px solid #d5e0ee;display:inline-flex;align-items:center;justify-content:center}.intro{display:flex;align-items:center;justify-content:space-between;height:184px;position:relative;padding:16px 20px 4px 4px}.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:800;color:#6c72a2;margin:0 0 12px}h1{font-size:clamp(32px,4.7vw,47px);letter-spacing:-1.7px;margin:0 0 10px;font-weight:800}h1 span{color:#7b59d8}.intro p:last-child{font-size:19px;color:#6c7e99;margin:0}.mascot{width:190px;height:190px;object-fit:contain;align-self:flex-end;filter:drop-shadow(0 14px 14px #8aa5d127);animation:float 5s ease-in-out infinite}.section-top{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:14px}h2{font-size:18px;margin:0;display:flex;align-items:center;gap:10px;font-weight:700}.step{background:#fff9;border:1px solid #d7e3f1;border-radius:50%;font-size:13px;width:25px;height:25px;display:inline-flex;align-items:center;justify-content:center;color:#7183a1}.text-button{background:transparent;display:flex;align-items:center;gap:6px;font-size:14px;color:#687b97;min-height:40px;padding:4px 8px}.text-button svg{width:18px;height:18px}.cloud-zone{background:#fff;border:2px solid #fff;border-radius:44px;box-shadow:0 12px 0 #cddded50,0 20px 50px #7a9fce12;min-height:280px;padding:22px 28px 21px;text-align:center;position:relative;transition:background .2s,border-color .2s,box-shadow .2s}.cloud-zone.drag-over{border-color:#9274e9;background:#faf7ff;box-shadow:0 0 0 7px #9d83ef25}.cloud-zone>p{font-size:15px;margin:0 0 16px;color:#7a8aa2}.slots{display:flex;gap:12px;justify-content:center;min-height:96px;align-items:center}.slot{width:96px;height:98px;border-radius:23px;display:flex;align-items:center;justify-content:center;position:relative;background:#f5f8fc;border:2px dashed #dce5f0;font-size:48px;color:#cad7e8;user-select:none;-webkit-user-select:none;touch-action:none}.slot.empty::after{content:'+';font-size:26px;font-weight:400}.slot.filled{background:var(--pale);color:var(--ink);border:2px solid transparent;box-shadow:0 4px 0 var(--shadow);font-family:Arial,sans-serif;font-size:68px;font-weight:500;cursor:grab}.slot.selected{border-color:var(--ink)}.slot.speaking{background:var(--ink);color:#fff;transform:translateY(-4px);box-shadow:0 7px 0 var(--shadow)}[data-letter="m"]{--ink:#7250d1;--pale:#eee6ff;--shadow:#d5c5f5}[data-letter="a"]{--ink:#d65b42;--pale:#ffede4;--shadow:#f4cbb7}[data-letter="i"]{--ink:#247bad;--pale:#e0f3ff;--shadow:#b8ddf2}.blend-track{height:5px;max-width:420px;margin:13px auto 0;border-radius:5px;background:#edf2f8;overflow:hidden}.blend-track span{height:100%;width:0;display:block;border-radius:5px;background:linear-gradient(90deg,#b6a0ef,#7250d1);transition:width .07s linear}.play-controls{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:20px}.play-button{min-height:52px;min-width:174px;padding:14px 25px;background:#7356d7;border-radius:19px;color:#fff;box-shadow:0 4px 0 #5b41b6;display:inline-flex;gap:11px;align-items:center;justify-content:center;font-size:17px;font-weight:700}.play-button:hover:not(:disabled){background:#6448c7}.slow-button{background:#f0f4fa;border:1px solid #e5ecf5;min-height:50px;padding:12px 19px;border-radius:17px;display:flex;align-items:center;gap:9px;font-size:15px;color:#60738e}.slow-button svg{color:#659884}.stop-button{width:44px;height:44px;background:#f6f8fc;border:none;color:#8290a6}.word-tools{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:12px;min-height:36px}.word-tools[hidden]{display:none}.word-tools span{font-size:14px;color:#7b84a3}.small-button{width:38px;height:36px;display:inline-flex;align-items:center;justify-content:center;font-size:20px;border-radius:10px;background:#eff3f9}.small-button svg{width:17px;height:17px}.try-row{display:flex;align-items:center;justify-content:center;gap:13px;margin:22px 0 28px;color:#7a8ba5;font-size:14px}.examples{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.example{background:#ffffff9c;border:1px solid #dbe5f2;padding:8px 15px;min-height:40px;border-radius:12px;font-size:18px;color:#53657e;letter-spacing:1px}.example:hover{border-color:#ac95e3;background:#fff}.example.active{color:#7250d1;border-color:#ae96e6;background:#f3eefe}.gesture-hint{font-size:13px;color:#7485a0}.letters{display:grid;grid-template-columns:repeat(6,1fr);gap:13px}.letter-card{background:var(--pale);border:1px solid #ffffffc0;box-shadow:0 5px 0 var(--shadow);border-radius:22px;position:relative;overflow:hidden}.letter-key{height:121px;width:100%;background:transparent;display:flex;align-items:center;justify-content:center;color:var(--ink);font-family:Arial,sans-serif;font-size:69px;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:none;position:relative;padding-bottom:14px;transition:background .15s}.letter-key.active{background:var(--ink);color:white}.letter-sound{position:absolute;left:12px;bottom:10px;width:16px;height:16px;opacity:.5}.add-letter{position:absolute;right:10px;bottom:9px;width:30px;height:30px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:#fff9;color:var(--ink);border:1px solid #fff9;z-index:2}.add-letter svg{width:18px;height:18px}.add-letter:hover{background:#fff}.add-hint{font-size:13px;color:#7f8fa8;text-align:center;line-height:1.5;margin:19px 0 0}.tiny-plus{background:#fff;border:1px solid #dee7f2;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;width:21px;height:21px;color:#687aa1;font-weight:bold}.status-line{min-height:40px;text-align:center;display:flex;align-items:center;justify-content:center;color:#6f80a0;font-size:14px;margin:8px 0 0;gap:8px}.status-line.error{color:#a74237}footer{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#8d9ab0;border-top:1px solid #d7e3f180;margin-top:10px;padding:12px 0 18px}footer .text-button{font-size:12px}.drag-ghost{position:fixed;z-index:20;pointer-events:none;width:84px;height:88px;border-radius:20px;background:var(--pale);color:var(--ink);box-shadow:0 12px 30px #4d429344;display:grid;place-content:center;font:60px Arial,sans-serif;transform:translate(-50%,-60%) rotate(-5deg)}dialog{border:0;border-radius:36px;padding:0;max-width:min(520px,calc(100vw - 32px));color:#293a59;background:#fff;box-shadow:0 30px 120px #3f477755}dialog::backdrop{background:#cedcf3bc;backdrop-filter:blur(9px)}.welcome-content{text-align:center;padding:8px 36px 27px;background:radial-gradient(ellipse at 50% 15%,#e9f3ff,white 70%)}.welcome-content img{width:240px;height:220px;object-fit:contain;margin:0 auto}.welcome-content h2{font-size:30px;justify-content:center;letter-spacing:-1px}.welcome-content>p:not(.eyebrow){font-size:16px;color:#7484a0;line-height:1.5;margin:12px 0 22px}.welcome-content .play-button{min-width:210px}.welcome-content .welcome-note{font-size:12px!important;margin:17px 0 0!important}.parent-content{padding:36px;position:relative;line-height:1.7;font-size:16px}.parent-content h2{font-size:25px;line-height:1.2}.parent-content ol{padding-left:23px}.parent-content li{margin-bottom:9px}.parent-content .eyebrow{padding-right:30px;font-size:10px}.parent-note{background:#f2f5fc;padding:16px;border-radius:15px}.privacy-note{color:#7b8aa0;font-size:14px}.dialog-close{position:absolute;right:13px;top:12px}.noscript{text-align:center;padding:30px;background:white}.shake{animation:shake .3s ease-in-out}@keyframes float{50%{transform:translateY(-6px) rotate(2deg)}}@keyframes shake{25%,75%{transform:translateX(-4px)}50%{transform:translateX(4px)}}@media(min-width:1200px){.app-shell{padding:0 55px}.intro{height:190px}.cloud-zone{padding-top:23px}.letter-key{height:126px}}@media(max-width:700px){.app-shell{padding:0 20px}header{height:80px}.lesson-tag{display:none}.intro{height:162px;padding-right:0}.intro .eyebrow{font-size:9px;letter-spacing:1px;max-width:190px;line-height:1.7}.intro p:last-child{font-size:16px}.mascot{width:135px;height:145px}.section-top{gap:8px}h2{font-size:16px}.cloud-zone{border-radius:32px;padding:20px 15px}.slots{gap:9px}.slot{width:min(20vw,88px);height:90px}.slot.filled{font-size:60px}.gesture-hint{font-size:11px;max-width:152px;text-align:right}.letters{gap:9px}.letter-card{border-radius:17px}.letter-key{font-size:54px;height:104px;padding-bottom:19px}.letter-sound{display:none}.add-letter{width:27px;height:27px;right:6px;bottom:6px;border-radius:9px}.add-hint{font-size:12px}.try-row{gap:9px;margin-bottom:24px;align-items:flex-start}.try-row>span{padding-top:12px;font-size:12px;white-space:nowrap}.examples{gap:5px}.example{font-size:16px;padding:8px 10px}.play-controls{gap:8px}.play-button{min-width:150px;padding:13px 18px}.slow-button{padding:12px}.welcome-content{padding:8px 24px 27px}.welcome-content h2{font-size:26px}.parent-content{padding:32px 24px}footer{font-size:11px}}@media(max-width:420px){.app-shell{padding:0 14px}.mascot{width:112px;height:130px}.intro{height:150px}.letters{gap:6px}.letter-key{font-size:46px;height:96px}.letter-card{border-radius:14px}.slot{height:80px;border-radius:19px}.slot.filled{font-size:53px}.play-button{min-width:137px}.slow-button{font-size:14px;padding:12px 10px}.stop-button{width:34px;height:40px}.cloud-zone>p{font-size:13px}.try-row{flex-direction:column;align-items:center;gap:4px}.try-row>span{padding:0}.example{padding:7px 11px}.intro .eyebrow{max-width:185px}.welcome-content img{height:190px;width:210px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}[hidden]{display:none!important}
/* Separate generous touch targets: audio above, add action below. */
.letter-card{display:flex;flex-direction:column}.letter-key{height:108px;padding:0 0 5px;flex:none}.add-letter{position:relative;inset:auto;width:100%;height:48px;min-height:48px;border-radius:0;border:0;border-top:1px solid var(--shadow);background:#ffffffad;flex:none;touch-action:manipulation}.add-letter svg{width:27px;height:27px;pointer-events:none}.add-letter:active:not(:disabled){transform:none;background:#fff}.letter-key:active:not(:disabled){transform:none}
@media(max-width:700px){.letter-key{height:88px;padding-bottom:5px}.add-letter{height:48px;min-height:48px}}
@media(max-width:360px){.letters{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.letter-key{height:86px;font-size:56px}}
/* Direct manipulation: insert at an edge, replace in the center, pull out to remove. */
.slot.drag-source{opacity:.28}.slot.drop-replace{outline:4px solid #e77546;outline-offset:4px;box-shadow:0 0 0 9px #fcd9bb70}.slot.drop-before::before,.slot.drop-after::after{content:'';position:absolute;top:-8px;bottom:-8px;width:5px;border-radius:8px;background:#7356d7;box-shadow:0 0 0 3px #fff;z-index:3}.slot.drop-before::before{left:-10px}.slot.drop-after::after{right:-10px}.drag-ghost.removing{opacity:.48;outline:3px dashed #d45e45}.slot.drag-source.drop-replace{outline:none}

.slot{position:relative;-webkit-touch-callout:none}.slot::before,.slot::after{pointer-events:none}.slot.filled{touch-action:none}