:root{
  --sky:#70c8f2;
  --sky-deep:#4fb3e6;
  --cloud:#ffffff;
  --yellow:#fed90f;
  --yellow-deep:#f5c400;
  --ink:#1b1b1b;
  --fg:#1b1b1b;
  --muted:#3b3b3b;
  --paper:#fffbe8;
  --blue:#1f5fa8;
  --orange:#f05a28;
  --pink:#ff7bb0;
  --green:#5dbb46;
  --line:#1b1b1b;
  --shadow:5px 5px 0 var(--ink);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--fg);
  font:17px/1.65 "Nunito", "Segoe UI", sans-serif;
  background-color:var(--sky);
  background-image:
    radial-gradient(ellipse 120px 44px at 12% 180px, var(--cloud) 98%, transparent 100%),
    radial-gradient(ellipse 80px 38px at 17% 162px, var(--cloud) 98%, transparent 100%),
    radial-gradient(ellipse 150px 50px at 84% 120px, var(--cloud) 98%, transparent 100%),
    radial-gradient(ellipse 90px 40px at 79% 100px, var(--cloud) 98%, transparent 100%),
    radial-gradient(ellipse 110px 40px at 96% 330px, var(--cloud) 98%, transparent 100%),
    linear-gradient(180deg, var(--sky-deep) 0, var(--sky) 420px);
  background-repeat:no-repeat;
}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.page{position:relative;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:var(--blue);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--orange)}
a:focus-visible,.btn:focus-visible,a.app:focus-visible{outline:3px solid var(--pink);outline-offset:3px}

header{
  position:sticky;top:0;z-index:2;
  background:var(--yellow);
  border-bottom:4px solid var(--ink);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.logo{
  font-family:"Fredoka", "Nunito", sans-serif;
  font-weight:700;font-size:24px;letter-spacing:.03em;
  color:var(--ink);text-decoration:none;
}
.logo:hover{color:var(--ink)}
.nav nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:4px 20px}
.nav nav a{
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:500;
  font-size:16px;color:var(--ink);text-decoration:none;
  border-bottom:3px solid transparent;
}
.nav nav a:hover,.nav nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--pink)}

.hero{padding:64px 20px 40px}
.kicker{
  display:inline-block;margin:0 0 16px;padding:4px 12px;
  border:3px solid var(--ink);border-radius:999px;
  background:var(--ink);color:var(--yellow);
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:500;font-size:14px;
}
.hero h1{
  margin:0 0 16px;
  font-family:"Fredoka", "Nunito", sans-serif;
  font-weight:700;font-size:clamp(38px,6vw,58px);line-height:1.1;
  letter-spacing:.01em;color:var(--yellow);
  text-shadow:
    -3px -3px 0 var(--ink), 3px -3px 0 var(--ink),
    -3px 3px 0 var(--ink), 3px 3px 0 var(--ink),
    0 -3px 0 var(--ink), 0 3px 0 var(--ink),
    -3px 0 0 var(--ink), 3px 0 0 var(--ink),
    7px 7px 0 var(--ink);
}
.hero p{margin:0;max-width:36em;font-size:19px;font-weight:700;color:var(--ink)}
.btn{
  display:inline-block;margin-top:24px;padding:11px 20px;
  border:3px solid var(--ink);border-radius:12px;
  background:var(--yellow);color:var(--ink);box-shadow:var(--shadow);
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:700;font-size:16px;text-decoration:none;
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.hero .btn + .btn{margin-left:12px}
.btn:hover{background:var(--pink);color:var(--ink);transform:translate(2px,2px);box-shadow:3px 3px 0 var(--ink)}
.fine{font-size:14px;color:var(--muted)}
.crumb{margin:0 0 14px;font-size:15px;font-weight:700;color:var(--ink)}
.crumb a{color:var(--ink)}

section{
  margin:0 0 26px;padding:28px 26px;
  background:var(--paper);
  border:3px solid var(--ink);border-radius:18px;box-shadow:var(--shadow);
}
h2{
  display:inline-block;margin:0 0 14px;
  font-family:"Fredoka", "Nunito", sans-serif;
  font-size:24px;font-weight:700;letter-spacing:0;color:var(--ink);
  border-bottom:5px solid var(--yellow);line-height:1.2;
}
section p{margin:0 0 14px;max-width:42em;color:var(--fg)}
section p:last-child{margin-bottom:0}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:18px}
.card{
  background:var(--cloud);border:3px solid var(--ink);border-radius:14px;padding:18px 18px 16px;
}
.card:nth-child(4n+1){background:#fff3a6}
.card:nth-child(4n+2){background:#d6f0ff}
.card:nth-child(4n+3){background:#ffe0ec}
.card:nth-child(4n+4){background:#e3f6da}
.card h3{
  margin:0 0 8px;
  font-family:"Fredoka", "Nunito", sans-serif;font-size:18px;font-weight:700;color:var(--ink);
}
.card p{margin:0;font-size:15px;color:var(--fg)}

.shots{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:8px}
.shots figure{margin:0}
.shots img{
  width:100%;height:auto;display:block;
  border-radius:14px;border:3px solid var(--ink);background:#fff;
}
.shots figcaption{margin-top:8px;font-size:13px;line-height:1.4;font-weight:700;color:var(--muted);text-align:left}

.catalog{display:grid;gap:16px;margin-top:4px}
a.app{
  display:grid;grid-template-columns:84px 1fr;gap:16px;align-items:center;
  padding:12px;border-radius:14px;border:3px solid var(--ink);
  background:var(--cloud);color:var(--ink);text-decoration:none;box-shadow:var(--shadow);
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
}
a.app:hover{background:#fff3a6;transform:translate(2px,2px);box-shadow:3px 3px 0 var(--ink);color:var(--ink)}
a.app img{
  width:84px;height:140px;object-fit:cover;object-position:top;
  border-radius:10px;background:#fff;display:block;border:3px solid var(--ink);
}
a.app h2{margin:0 0 4px;font-size:22px}
a.app p{margin:0;max-width:none;color:var(--muted);font-size:15px}
a.app .more{
  display:inline-block;margin-top:8px;
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:700;font-size:14px;color:var(--orange);
}
.contact a{font-size:18px;font-weight:700}

footer{
  margin-top:12px;padding:26px 0 36px;
  background:var(--green);border-top:4px solid var(--ink);
}
.foot{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:700;color:var(--ink);
}
.foot a{color:var(--ink);text-decoration:none}
.foot a:hover{color:var(--ink);text-decoration:underline}

footer{position:relative}
footer.has-meadow{margin-top:180px;padding-top:34px}
.meadow{
  position:absolute;left:0;right:0;bottom:calc(100% - 22px);height:190px;
  overflow:hidden;pointer-events:none;z-index:1;
}
.tree{position:absolute;bottom:0;line-height:0}
.tree svg{width:100%;height:auto;display:block}
.tree.t1{left:4%;width:120px}
.tree.t2{left:22%;width:96px}
.tree.t3{right:20%;width:104px}
.tree.t4{right:3%;width:136px}
.sheep{
  position:absolute;left:0;bottom:2px;z-index:2;width:96px;padding:0;
  border:0;background:none;cursor:pointer;pointer-events:auto;line-height:0;
  transition-property:transform;transition-timing-function:cubic-bezier(.3,.7,.4,1);
  -webkit-tap-highlight-color:transparent;
}
.sheep:focus-visible{outline:3px solid var(--pink);outline-offset:4px;border-radius:12px}
.sheep-body{display:block;transition:transform .15s ease}
.sheep svg{width:100%;height:auto;display:block;overflow:visible}
.sheep.running svg{animation:sheep-hop .28s ease-in-out infinite}
.sheep.running .leg.a{animation:sheep-leg .28s linear infinite}
.sheep.running .leg.b{animation:sheep-leg .28s linear infinite reverse}
.leg{transform-box:fill-box;transform-origin:50% 0}
.baa{
  position:absolute;left:50%;bottom:100%;margin-bottom:4px;transform:translateX(-50%) scale(.6);
  padding:3px 10px;border:3px solid var(--ink);border-radius:999px;background:#fff;
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:700;font-size:14px;line-height:1.3;color:var(--ink);
  white-space:nowrap;opacity:0;transition:opacity .15s ease, transform .15s ease;pointer-events:none;
}
.sheep.running .baa{opacity:1;transform:translateX(-50%) scale(1)}
@keyframes sheep-hop{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes sheep-leg{0%,100%{transform:rotate(22deg)}50%{transform:rotate(-22deg)}}

.shelf{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.shelf .btn{margin-top:18px}
.shelf-art{position:relative;width:190px;height:150px}
.shelf-art span{
  position:absolute;width:74px;height:74px;border:3px solid var(--ink);border-radius:20px;box-shadow:var(--shadow);
  display:grid;place-items:center;
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:700;font-size:34px;color:var(--ink);
}
.shelf-art .s1{left:0;top:40px;background:var(--yellow);transform:rotate(-10deg)}
.shelf-art .s2{left:58px;top:6px;background:#d6f0ff;transform:rotate(6deg)}
.shelf-art .s3{left:108px;top:58px;background:#ffe0ec;transform:rotate(-4deg)}
.shelf-art .s4{left:46px;top:84px;width:56px;height:56px;border-radius:16px;font-size:28px;background:#e3f6da;transform:rotate(12deg)}

[hidden]{display:none!important}
code{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.9em;background:#fff3a6;padding:1px 5px;border-radius:6px}
.hero-tool{padding:40px 20px 28px}
.hero-tool .crumb{margin-bottom:10px;font-size:15px}

button.btn{cursor:pointer;line-height:1.2}
.btn.alt{background:#fff}
.btn.alt:hover{background:var(--pink)}
.btn:disabled{opacity:.45;cursor:not-allowed;background:#fff;transform:none;box-shadow:var(--shadow)}
.tool .btn{margin:0;padding:8px 14px;font-size:15px}
.tool-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.tool-row{display:flex;flex-wrap:wrap;gap:14px;align-items:end;margin-top:14px}
.tool-row .field.grow{flex:1 1 220px}
.field{display:grid;gap:6px;font-family:"Fredoka", "Nunito", sans-serif;font-weight:500;font-size:15px;color:var(--ink)}
.tool input[type=text],.tool input[type=url],.tool input[type=email],.tool input[type=tel],.tool select,.tool textarea{
  width:100%;min-width:0;padding:9px 12px;
  font:16px/1.4 "Nunito", "Segoe UI", sans-serif;color:var(--ink);
  background:#fff;border:3px solid var(--ink);border-radius:12px;
}
.tool-row select{min-width:150px}
.tool input[type=color]{width:64px;height:44px;padding:3px;border:3px solid var(--ink);border-radius:12px;background:#fff;cursor:pointer}
.tool input[type=range]{width:100%;accent-color:var(--orange)}
.tool input:focus-visible,.tool select:focus-visible,.tool textarea:focus-visible,.code-out:focus-visible{outline:3px solid var(--pink);outline-offset:2px}
.check{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;cursor:pointer}
.check input{width:20px;height:20px;margin:0;accent-color:var(--orange)}
.alert{margin:14px 0 0;padding:10px 14px;max-width:none;border:3px solid var(--ink);border-radius:12px;font-weight:700;font-size:15px}
.alert.ok{background:#e3f6da}
.alert.bad{background:#ffd6d6}
.alert.warn{background:#fff3a6}

textarea.code{
  margin-top:6px;min-height:260px;resize:vertical;white-space:pre;overflow:auto;tab-size:4;
  font:14px/1.5 ui-monospace,"Cascadia Code",Consolas,monospace;
}
.out-head{display:flex;flex-wrap:wrap;gap:10px;align-items:end;justify-content:space-between;margin-top:22px}
.out-head .tool-actions{margin:0}
.code-out{
  margin:10px 0 0;min-height:120px;max-height:560px;overflow:auto;padding:14px;
  border:3px solid var(--ink);border-radius:12px;background:#1b1b1b;color:#f5f5f5;
  font:14px/1.5 ui-monospace,"Cascadia Code",Consolas,monospace;white-space:pre;tab-size:4;
}
.code-out .tk{color:#7fd3ff}
.code-out .ts{color:#b5f08a}
.code-out .tn{color:#ffb86b}
.code-out .tl{color:#ff8fc4}
.code-out .err{color:#ffd6d6}

.sudoku-layout{display:grid;grid-template-columns:minmax(0,468px) minmax(0,1fr);gap:24px;align-items:start}
.sudoku-bar{display:flex;justify-content:space-between;gap:10px;margin-bottom:10px;font-family:"Fredoka", "Nunito", sans-serif;font-weight:700;font-size:16px}
.sudoku{
  display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr);aspect-ratio:1;width:100%;
  border:4px solid var(--ink);border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow);
  user-select:none;-webkit-user-select:none;touch-action:manipulation;
}
.cell{
  position:relative;display:grid;place-items:center;min-width:0;min-height:0;margin:0;padding:0;
  border:0;border-right:1px solid #b9c4cc;border-bottom:1px solid #b9c4cc;border-radius:0;background:#fff;
  font-family:"Fredoka", "Nunito", sans-serif;font-weight:500;font-size:clamp(18px,4.6vw,28px);line-height:1;
  color:var(--ink);cursor:pointer;-webkit-tap-highlight-color:transparent;
}
.cell:nth-child(9n){border-right:0}
.cell:nth-child(n+73){border-bottom:0}
.cell.c3{border-right:3px solid var(--ink)}
.cell.r3{border-bottom:3px solid var(--ink)}
.cell.given{font-weight:700}
.cell.user{color:var(--blue)}
.cell.peer{background:#fff6c9}
.cell.same{background:#ffe27a}
.cell.wrong{color:#d62828;background:#ffd6d6}
.cell.sel{background:var(--yellow)}
.cell:focus-visible{outline:3px solid var(--pink);outline-offset:-3px}
.notes{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);width:100%;height:100%;padding:2px}
.notes i{display:grid;place-items:center;font:700 clamp(8px,1.7vw,11px)/1 "Nunito", sans-serif;font-style:normal;color:#4a4a4a}
.sudoku-side{display:grid;gap:4px}
.sudoku-side .tool-actions{margin-top:12px}
.numpad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.pad-key{
  position:relative;height:56px;border:3px solid var(--ink);border-radius:12px;background:#fff;box-shadow:3px 3px 0 var(--ink);
  font:700 24px/1 "Fredoka", "Nunito", sans-serif;color:var(--ink);cursor:pointer;
}
.pad-key:hover{background:#fff3a6}
.pad-key:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.pad-key:disabled{opacity:.3;cursor:default;background:#fff;transform:none}
.pad-key small{position:absolute;top:3px;right:6px;font:700 11px/1 "Nunito", sans-serif;color:var(--muted)}
#sd-notes[aria-pressed="true"]{background:var(--pink)}

.qr-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}
.qr-form,.qr-form [data-type]{display:grid;gap:14px}
.qr-form .tool-row{margin-top:0}
.qr-form textarea{resize:vertical}
.qr-frame{display:grid;place-items:center;aspect-ratio:1;padding:12px;border:3px solid var(--ink);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
.qr-frame canvas{display:block;width:100%;height:auto;image-rendering:pixelated}
.qr-preview #qr-info{margin:12px 0 0}

.tools{display:grid;gap:14px;margin-top:6px}
a.tool-card{
  display:grid;grid-template-columns:64px 1fr;gap:16px;align-items:center;padding:14px;
  border:3px solid var(--ink);border-radius:14px;background:#fff;color:var(--ink);text-decoration:none;box-shadow:var(--shadow);
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
}
a.tool-card:hover{background:#fff3a6;transform:translate(2px,2px);box-shadow:3px 3px 0 var(--ink);color:var(--ink)}
a.tool-card b{display:block;font-family:"Fredoka", "Nunito", sans-serif;font-size:20px}
a.tool-card > span:last-child > span{display:block;font-size:15px;color:var(--muted)}
.tool-icon{
  display:grid;place-items:center;width:64px;height:64px;border:3px solid var(--ink);border-radius:16px;
  font:700 26px/1 "Fredoka", "Nunito", sans-serif;color:var(--ink);
}
.tool-icon.i1{background:var(--yellow)}
.tool-icon.i2{background:#d6f0ff}
.tool-icon.i3{background:#ffe0ec}

@media (max-width:760px){
  .sudoku-layout,.qr-layout{grid-template-columns:1fr}
  .sudoku-layout > div:first-child{max-width:468px;width:100%;margin:0 auto}
  .qr-preview{order:-1;max-width:320px;width:100%;margin:0 auto}
  .numpad{grid-template-columns:repeat(9,1fr);gap:5px}
  .pad-key{height:48px;font-size:20px;border-width:2px;box-shadow:2px 2px 0 var(--ink)}
  .pad-key small{top:2px;right:3px;font-size:9px}
}
@media (max-width:640px){
  .hero{padding:44px 20px 28px}
  .nav nav{gap:4px 14px}
  section{padding:22px 18px}
  .shots{display:flex;overflow-x:auto;gap:12px;padding-bottom:6px}
  .shots figure{flex:0 0 70%}
  footer.has-meadow{margin-top:140px}
  .meadow{height:150px}
  .tree.t1{left:-2%;width:84px}
  .tree.t2{left:20%;width:66px}
  .tree.t3{right:18%;width:72px}
  .tree.t4{right:-3%;width:92px}
  .sheep{width:76px}
  .shelf{grid-template-columns:1fr}
  .shelf-art{order:-1;margin:0 auto;transform:scale(.85)}
}
@media (prefers-reduced-motion:reduce){
  .btn,a.app,a.tool-card{transition:none}
  .btn:hover,a.app:hover,a.tool-card:hover{transform:none}
  .sheep.running svg,.sheep.running .leg{animation:none}
}