:root{--ink:#2A1060;--muted:#5a6475;--bg:#fbfcfe;--card:#fff;--line:#e3e8f0;--accent:#2563eb;--accent2:#0e9f6e;--warm:#f59e0b}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--accent)}a:focus,button:focus,textarea:focus{outline:3px solid #93c5fd;outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px}
header{border-bottom:1px solid var(--line);background:#fff}nav{max-width:1080px;margin:auto;display:flex;align-items:center;gap:18px;padding:14px 20px;flex-wrap:wrap}
.logo{font-weight:700;font-size:1.15rem;text-decoration:none;color:var(--ink)}.logo span{color:var(--accent)}nav .links{display:flex;gap:16px;flex-wrap:wrap;margin-left:auto}nav .links a{text-decoration:none;color:var(--muted)}nav .links a:hover{color:var(--accent)}
main{max-width:1080px;margin:auto;padding:28px 20px 48px}
.hero{padding:28px 0 12px}.hero h1{font-size:clamp(1.8rem,4vw,2.6rem);margin:.2em 0}.hero p{color:var(--muted);font-size:1.1rem;max-width:640px}
.note{font-size:.85rem;color:var(--muted);background:#f1f5f9;border-radius:8px;padding:6px 10px;display:inline-block}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}.card h2,.card h3{margin-top:0}
.tag{display:inline-block;font-size:.8rem;font-weight:600;padding:2px 10px;border-radius:99px;background:#dbeafe;color:#1e40af}.tag.g{background:#d1fae5;color:#065f46}.tag.w{background:#fef3c7;color:#92400e}
.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:10px;padding:10px 16px;font-size:1rem;cursor:pointer;text-decoration:none;font-weight:600}.btn.sec{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn:disabled{opacity:.5}
.lessons{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.lessons button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;cursor:pointer;font-size:.95rem}.lessons button[aria-current=true]{border-color:var(--accent);background:#eff6ff}.lessons button.done::after{content:" ✓";color:var(--accent2);font-weight:700}
.work{display:grid;grid-template-columns:1fr 1fr;gap:18px}@media(max-width:760px){.work{grid-template-columns:1fr}}
textarea{width:100%;min-height:220px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;border:1px solid var(--line);border-radius:10px;padding:12px;background:#0f172a;color:#e2e8f0;resize:vertical}
.msg{margin-top:10px;padding:10px 12px;border-radius:10px;min-height:1em}.msg.ok{background:#d1fae5;color:#065f46}.msg.err{background:#fee2e2;color:#991b1b}.msg.info{background:#f1f5f9;color:var(--muted)}
canvas{width:100%;max-width:420px;aspect-ratio:1;border:1px solid var(--line);border-radius:12px;background:#fff;display:block}
iframe{width:100%;height:260px;border:1px solid var(--line);border-radius:12px;background:#fff}
pre.out{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:12px;min-height:120px;white-space:pre-wrap;margin:0}
.board{display:grid;gap:4px;max-width:360px}.cell{aspect-ratio:1;border-radius:8px;background:#eef2f7;display:flex;align-items:center;justify-content:center;font-size:1.6rem}.cell.wall{background:#94a3b8}.cell.goal{background:#fef3c7}
.blocks{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.blocks button{font-size:1.4rem;width:56px;height:56px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer}
.program{display:flex;gap:6px;flex-wrap:wrap;min-height:52px;padding:8px;border:2px dashed var(--line);border-radius:12px}.program span{font-size:1.2rem;background:#dbeafe;border-radius:8px;padding:4px 8px}
footer{border-top:1px solid var(--line);background:#fff;padding:22px 20px;text-align:center;color:var(--muted);font-size:.95rem}
/* ===== v2 bold & fun ===== */
:root{--accent:#1d4ed8;--young:#d9480f;--middle:#6741d9;--teen:#087f5b;--sun:#A8F0E4;--bg:#fffaf0;--display:ui-rounded,"SF Pro Rounded","Arial Rounded MT Bold","Varela Round","Nunito","Trebuchet MS",system-ui,sans-serif}
body{background:var(--bg)}body.t-young{--accent:var(--young)}body.t-middle{--accent:var(--middle)}body.t-teen{--accent:var(--teen)}
h1,h2,h3,.logo{font-family:var(--display);font-weight:900;letter-spacing:-.01em}
header{border-bottom:4px solid var(--ink)}.logo{font-size:1.4rem}.logo span{color:var(--accent)}
.logo::before{content:"";display:inline-block;width:22px;height:22px;border-radius:7px;background:var(--sun);border:3px solid var(--ink);margin-right:8px;vertical-align:-4px;transform:rotate(12deg)}
nav .links a{font-weight:700;color:var(--ink);padding:4px 10px;border-radius:99px}nav .links a:hover{background:var(--sun);color:var(--ink)}
.hero{position:relative;background:var(--accent);color:#fff;border-radius:28px;padding:40px 32px;margin:8px 0 26px;overflow:hidden;border:4px solid var(--ink);box-shadow:8px 8px 0 var(--ink)}
.hero h1{font-size:clamp(2.2rem,6vw,3.6rem);line-height:1.05;margin:.25em 0;max-width:15ch}.hero p{color:#fff;font-size:1.2rem;position:relative}.hero code{background:rgba(0,0,0,.25);padding:1px 6px;border-radius:6px}
.hero::before{content:"";position:absolute;right:-40px;top:-40px;width:200px;height:200px;border-radius:50%;background:var(--sun);opacity:.95}
.hero::after{content:"";position:absolute;right:120px;bottom:-30px;width:110px;height:110px;background:rgba(255,255,255,.22);transform:rotate(20deg);border-radius:18px}
.t-home .hero{background:var(--accent)}.hero .note{background:#fff;color:var(--ink);font-weight:700}
.tag{font-family:var(--display);font-weight:900;font-size:.9rem;padding:4px 14px;border:3px solid var(--ink);background:var(--sun);color:var(--ink)}.hero .tag{background:#fff}
.tag.w,.tag.g{background:var(--sun);color:var(--ink)}
.card{border:4px solid var(--ink);border-radius:22px;box-shadow:6px 6px 0 var(--ink);padding:24px}
.grid .card{position:relative;overflow:hidden;transition:transform .15s}.grid .card:hover{transform:translateY(-4px) rotate(-.5deg)}
.trk{color:#fff}.trk p{color:#fff}.trk.y{background:var(--young)}.trk.m{background:var(--middle)}.trk.t{background:var(--teen)}
.trk h2{font-size:2rem;margin:.4em 0 .2em}.trk .btn{background:#fff;color:var(--ink)}
.trk::after{content:"";position:absolute;right:-26px;bottom:-26px;width:100px;height:100px;background:rgba(255,255,255,.18)}.trk.y::after{border-radius:50%}.trk.m::after{transform:rotate(45deg)}.trk.t::after{clip-path:polygon(50% 0,100% 100%,0 100%);right:-10px;bottom:-10px}
.btn{font-family:var(--display);font-weight:900;font-size:1.1rem;padding:13px 22px;border-radius:16px;border:3px solid var(--ink);box-shadow:0 5px 0 var(--ink);transition:transform .08s,box-shadow .08s,filter .15s;background:var(--accent)}
.btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--ink);filter:brightness(1.08)}.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}
.btn.sec{background:#fff;border:3px solid var(--ink)}
.lessons button{font-family:var(--display);font-weight:800;border:3px solid var(--ink);border-radius:14px;padding:10px 14px;box-shadow:0 3px 0 var(--ink);transition:transform .08s}.lessons button:active{transform:translateY(3px);box-shadow:none}
.lessons button[aria-current=true]{background:var(--accent);color:#fff;border-color:var(--ink)}.lessons button.done::after{color:inherit}
.blocks button{width:64px;height:64px;border:3px solid var(--ink);border-radius:16px;box-shadow:0 4px 0 var(--ink);background:var(--sun);transition:transform .08s}.blocks button:hover{transform:translateY(-2px)}.blocks button:active{transform:translateY(4px);box-shadow:none}
.program{border:3px dashed var(--ink);background:#fff}.program span{background:var(--accent);color:#fff;border-radius:10px;padding:6px 10px;animation:pop .2s ease-out}
.cell{border-radius:12px;background:#f1ece2}.cell.wall{background:var(--ink)}.cell.goal{background:var(--sun)}.cell.bot{animation:bounce .25s ease-out}
textarea{border:4px solid var(--ink);border-radius:16px}canvas,iframe,pre.out{border:4px solid var(--ink);border-radius:16px}
.msg{font-weight:700;border:3px solid var(--ink);border-radius:14px}.msg.ok{background:#b2f2bb;color:#0b3d17;animation:pop .3s ease-out}
footer{background:var(--ink);color:#fff;border-top:0}footer a{color:var(--sun);font-family:var(--display);font-weight:900;font-size:1.15rem}
@keyframes pop{0%{transform:scale(.7)}70%{transform:scale(1.06)}100%{transform:scale(1)}}
@keyframes bounce{0%{transform:translateY(0)}40%{transform:translateY(-10px) scale(1.1)}100%{transform:translateY(0)}}
.confetti{position:fixed;width:12px;height:12px;pointer-events:none;z-index:99;border-radius:3px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.grid .card:hover{transform:none}}
@media(max-width:600px){.hero{padding:28px 20px;box-shadow:5px 5px 0 var(--ink)}.hero::before{width:120px;height:120px}}
.learner-bar{background:#A8F0E4;color:#2A1060;text-align:center;padding:8px 12px;font-weight:700;border-bottom:3px solid #2A1060}
.learner-bar a{color:#2A1060}
.form{display:grid;gap:12px;max-width:460px}.form label{display:grid;gap:4px;font-weight:700}.form input,.form select,.form textarea{font:inherit;padding:10px 12px;border:3px solid #2A1060;border-radius:12px}
.form .check{display:flex;gap:8px;align-items:flex-start;font-weight:400}
table.prog{border-collapse:collapse;width:100%;font-size:.95rem}table.prog th,table.prog td{border:2px solid #2A1060;padding:6px 8px;text-align:center}table.prog th:first-child,table.prog td:first-child{text-align:left}
.pics{display:grid;grid-template-columns:repeat(3,72px);gap:10px}.pics button{font-size:2.2rem;height:72px;border:3px solid #2A1060;border-radius:16px;background:#fff;cursor:pointer}.pics button[aria-pressed=true]{background:#A8F0E4}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;border:2px solid #2A1060;font-size:.85rem;font-weight:700}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* ===== v3 cat-logo palette (sampled from logo) ===== */
:root{--purple:#7B2FE0;--purple-d:#6A25C9;--teal:#08B5BB;--teal-d:#0B7A80;--deep:#4A1F95;--ink:#2A1060;--muted:#5C5277;--bg:#F6F1FF;--lav:#EFE7FF;--mint:#E3FAF6;--sun:#A8F0E4;--line:#D9CCF5;
--accent:var(--purple);--accent2:var(--teal-d);--young:#B4258A;--middle:#6A25C9;--teen:#0B7A80;--grad:linear-gradient(135deg,#7B2FE0 0%,#4A63D0 50%,#0B8F95 100%);
--display:"Nunito",ui-rounded,"SF Pro Rounded","Arial Rounded MT Bold",system-ui,sans-serif}
body{font-family:"Nunito",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg) radial-gradient(circle at 90% 0,#E3FAF6 0,transparent 40%)}
a{color:var(--purple-d)}a:focus,button:focus,textarea:focus{outline-color:var(--teal)}
header{background:#fff;border-bottom:4px solid transparent;border-image:var(--grad) 1}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--deep)}.logo::before{display:none}
.logo img{width:44px;height:44px;border-radius:12px;transition:transform .2s}.logo:hover img{transform:rotate(-8deg) scale(1.08)}
.logo .wm b{color:var(--deep);font-weight:900}.logo .wm span{color:var(--teal-d)}
nav .links a:hover{background:var(--lav);color:var(--purple-d)}
.hero,.t-home .hero{background:var(--grad)}body.t-young .hero{background:linear-gradient(135deg,#B4258A,#7B2FE0)}body.t-middle .hero{background:linear-gradient(135deg,#6A25C9,#3E5BC9)}body.t-teen .hero{background:linear-gradient(135deg,#4A1F95,#0B7A80)}
.hero::before{background:var(--teal);opacity:.55}.hero::after{background:rgba(255,255,255,.2)}
.trk.y{background:linear-gradient(160deg,#B4258A,#8A1F9E)}.trk.m{background:linear-gradient(160deg,#7B2FE0,#5A2AC0)}.trk.t{background:linear-gradient(160deg,#0B7A80,#14608A)}
.tag,.tag.w,.tag.g{background:var(--sun);color:var(--ink)}.note{background:var(--lav)}
.program span{background:var(--accent)}.cell{background:var(--lav)}.msg.ok{background:#C9F5EC;color:#063F3F}.msg.info{background:var(--lav)}
.lessons button[aria-current=true]{background:var(--accent)}
footer{background:var(--ink)}footer a{color:var(--sun)}