/* Keyz Piano & Theory brand layer: mint / navy / sky / sun (from the logo) */
:root{
  --mint:#4CC3A5; --mint-d:#2fa588; --mint-l:#DDF5EE;
  --navy:#12285A; --navy-2:#1d3a7a;
  --sky:#7BB3F0; --sky-l:#E3F0FC; --ice:#F4FAFD;
  --sun:#FFD95A; --sun-d:#f0b800;
  --ink:#12285A; --muted:#51628a;
  --r:24px; --shadow:0 10px 30px rgba(18,40,90,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Nunito',system-ui,sans-serif;color:var(--ink);background:var(--ice);line-height:1.6;overflow-x:hidden}
h1,h2,h3,h4{font-family:'Baloo 2',sans-serif;line-height:1.15;margin:0 0 .4em;color:var(--navy)}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.kz-wrap{max-width:1140px;margin:0 auto;padding:0 20px}

/* header */
.kz-header{position:sticky;top:0;z-index:50;background:rgba(244,250,253,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(18,40,90,.06)}
.kz-nav{display:flex;align-items:center;justify-content:space-between;height:92px;position:relative}
.kz-brand{display:flex;align-items:center;gap:10px;font:800 1.45rem 'Baloo 2',sans-serif;color:var(--navy)}
.kz-brand img{width:70px;height:70px;object-fit:cover;border-radius:16px}
.kz-brand b{color:var(--mint)}
.kz-links{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0;font-weight:700}
.kz-links>li{position:relative}
.kz-links a:hover,.kz-links .current>a{color:var(--mint-d)}
.kz-sub{display:none;position:absolute;top:100%;left:-14px;min-width:230px;background:#fff;border-radius:16px;padding:8px;list-style:none;margin:0;box-shadow:var(--shadow)}
.has-kids:hover .kz-sub,.has-kids:focus-within .kz-sub{display:block}
.kz-sub a{display:block;padding:8px 14px;border-radius:10px}
.kz-sub a:hover{background:var(--mint-l)}
.kz-menu{display:none;background:none;border:0;font-size:1.8rem;cursor:pointer;color:var(--navy)}
.kz-btn{display:inline-block;padding:12px 26px;border-radius:999px;font:700 1.05rem 'Baloo 2',sans-serif;border:0;cursor:pointer;transition:.2s}
.kz-btn-primary{background:var(--mint);color:#fff!important;box-shadow:0 6px 0 var(--mint-d)}
.kz-btn-primary:hover{transform:translateY(2px);box-shadow:0 4px 0 var(--mint-d);color:#fff}
.kz-btn-ghost{background:#fff;color:var(--navy);box-shadow:0 6px 0 #d3e2f2}
.kz-btn-ghost:hover{transform:translateY(2px);box-shadow:0 4px 0 #d3e2f2}
.kz-links .kz-btn{padding:9px 22px;font-size:1rem}

/* footer */
.kz-footer{background:var(--navy);color:#b9c8ea;padding:50px 0 30px;margin-top:40px}
.kz-footer .kz-brand{color:#fff}
.kz-foot-row{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.kz-foot-blurb{margin-top:10px;max-width:280px}
.kz-footer h4{color:#fff;margin-bottom:8px}
.kz-footer a:not(.kz-brand){display:block;padding:2px 0}
.kz-footer a:hover{color:var(--mint)}
.kz-footer small{display:block;text-align:center;margin-top:34px;opacity:.7}

/* generic content */
.kz-main{min-height:60vh}
.entry-content>.kz-pz{max-width:1140px;margin:0 auto;padding:40px 20px}
.kz-doc{max-width:860px;margin:0 auto;padding:50px 20px}
.kz-doc h1{font-size:clamp(2rem,4vw,3rem);font-weight:800}
.kz-doc h2{font-size:1.5rem;margin-top:1.6em}
.kz-doc ul{padding-left:1.2em}
.kz-doc a{color:var(--mint-d);text-decoration:underline}

/* home */
.h-hero{padding:70px 0 50px;background:radial-gradient(600px 400px at 10% 10%,var(--mint-l),transparent 70%),radial-gradient(600px 450px at 95% 20%,var(--sky-l),transparent 70%)}
.h-hero .kz-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.h-pill{display:inline-block;background:var(--mint-l);color:var(--mint-d);font-weight:700;padding:6px 16px;border-radius:999px;font-size:.9rem;margin-bottom:18px}
.h-hero h1{font-size:clamp(2.6rem,5.5vw,4.4rem);font-weight:800;letter-spacing:-.5px}
.h-hero h1 .g{color:var(--mint)} .h-hero h1 .u{background:linear-gradient(transparent 62%,var(--sun) 62%)}
.h-lead{font-size:1.2rem;color:var(--muted);margin:20px 0 30px;max-width:520px}
.h-cta{display:flex;gap:16px;flex-wrap:wrap}
.h-art{position:relative;display:grid;place-items:center}
.h-art img{width:100%;max-width:420px;height:auto;aspect-ratio:1/1;object-fit:contain;border-radius:36px;background:#fff;padding:14px;box-shadow:var(--shadow);animation:kzfloat 6s ease-in-out infinite}
.h-note{position:absolute;z-index:2;font-size:2.4rem;animation:kzfloat 5s ease-in-out infinite}
.h-n1{top:2%;left:6%;color:var(--mint)}.h-n2{top:4%;right:4%;color:var(--sun-d);animation-delay:-3s}.h-n3{bottom:8%;left:10%;color:var(--sky);animation-delay:-2s}
@keyframes kzfloat{50%{transform:translateY(-14px)}}
.h-sec{padding:70px 0}
.h-head{text-align:center;max-width:640px;margin:0 auto 46px}
.h-head h2{font-size:clamp(2rem,4vw,3rem);font-weight:800}
.h-head p{color:var(--muted);font-size:1.1rem}
.h-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.h-app{display:block;background:#fff;border-radius:var(--r);padding:28px;box-shadow:var(--shadow);transition:.25s;border-bottom:6px solid var(--c)}
.h-app:hover{transform:translateY(-8px)}
.h-ico{width:64px;height:64px;border-radius:20px;display:grid;place-items:center;font-size:2rem;background:var(--bg);margin-bottom:16px}
.h-app h3{font-size:1.5rem}.h-app p{color:var(--muted);margin:0}
.h-tag{display:inline-block;margin-top:14px;font-weight:700;font-size:.85rem;padding:4px 12px;border-radius:999px;background:var(--bg);color:var(--c)}
.c1{--c:#2fa588;--bg:var(--mint-l)}.c2{--c:#3b82d6;--bg:var(--sky-l)}.c3{--c:#d99a00;--bg:#FFF4CC}.c4{--c:#12285A;--bg:#E6EAF5}
.h-steps{background:#fff}
.h-stepgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;counter-reset:s}
.h-step{text-align:center;padding:10px 20px}
.h-step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:var(--mint);color:#fff;font:800 1.8rem 'Baloo 2';box-shadow:0 6px 0 var(--mint-d)}
.h-step:nth-child(2)::before{background:var(--sky);box-shadow:0 6px 0 #4f8fd6}
.h-step:nth-child(3)::before{background:var(--sun);color:var(--navy);box-shadow:0 6px 0 var(--sun-d)}
.h-step p{color:var(--muted)}
.h-banner{background:linear-gradient(135deg,var(--mint),var(--sky));border-radius:36px;padding:56px 26px;text-align:center}
.h-banner h2{font-size:clamp(2rem,4vw,3rem)}.h-banner p{font-size:1.15rem;max-width:520px;margin:0 auto 26px}
.h-banner .kz-btn-primary{background:var(--navy);box-shadow:0 6px 0 #091635}
.h-banner .kz-btn-primary:hover{box-shadow:0 4px 0 #091635}

/* playable piano */
.h-piano{background:var(--navy);border-radius:32px;padding:34px 30px 40px;color:#fff;box-shadow:var(--shadow)}
.h-piano h2{color:#fff}.h-piano p{color:#b9c8ea;margin:4px 0}
#nowplaying{height:34px;font:600 1.4rem 'Baloo 2';color:var(--sun);margin:8px 0}
.keys{position:relative;display:flex;height:210px;max-width:760px;margin:10px auto 0;user-select:none;touch-action:manipulation}
.key{flex:1;background:#fff;border:1px solid #cfd9ea;border-radius:0 0 14px 14px;color:var(--muted);display:flex;align-items:flex-end;justify-content:center;padding-bottom:12px;font-weight:700;cursor:pointer;transition:background .08s,transform .08s}
.key.on{background:var(--mint);color:#fff;transform:translateY(3px)}
.key.blk{position:absolute;width:8.2%;height:62%;background:var(--navy-2);border:2px solid #0a1a40;color:#8fa6d8;z-index:2;border-radius:0 0 10px 10px;flex:none;font-size:.75rem;box-shadow:0 6px 10px rgba(0,0,0,.35)}
.key.blk.on{background:var(--sky);color:var(--navy)}

/* buy / forms */
.kz-page-narrow{max-width:760px;margin:0 auto;padding:50px 20px}

@media(max-width:900px){
  .h-hero .kz-wrap{grid-template-columns:1fr}.h-art{order:-1}.h-art img{max-width:260px}
  .h-grid,.h-stepgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:700px){
  .kz-menu{display:block}
  .kz-links{display:none;position:absolute;top:92px;left:-20px;right:-20px;background:#fff;flex-direction:column;align-items:flex-start;padding:20px;gap:14px;box-shadow:var(--shadow)}
  .kz-links.open{display:flex}
  .kz-sub{display:block;position:static;box-shadow:none;padding:0 0 0 10px}
  .h-grid,.h-stepgrid{grid-template-columns:1fr}
  .keys{height:160px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.kz-footer .kz-brand img{width:120px;height:120px;border-radius:22px}.kz-footer .kz-brand{flex-direction:column;align-items:flex-start;gap:10px}
@media(max-width:700px){.kz-nav{height:78px}.kz-header .kz-brand img{width:56px;height:56px}.kz-header .kz-brand{font-size:1.2rem}.kz-links{top:78px}}

.kz-header .kz-brand img{width:78px;height:78px;border-radius:0;object-fit:contain}
@media(max-width:700px){.kz-header .kz-brand img{width:60px;height:60px}}

/* Apps hub (/apps/): match the home page look (light mint/sky hero, coloured app cards, mint buttons) */
.kz-pz-hero{background:radial-gradient(600px 400px at 10% 10%,var(--mint-l),transparent 70%),radial-gradient(600px 450px at 95% 20%,var(--sky-l),transparent 70%),#fff;color:var(--navy);border-radius:var(--r);box-shadow:var(--shadow)}
.kz-pz-hero::before{color:rgba(18,40,90,.06)}
.kz-pz-hero h1{color:var(--navy);font-family:'Baloo 2',sans-serif;font-weight:800}
.kz-pz-hero p{color:var(--muted)}
.kz-pz .kz-pz-tag{background:var(--mint-l);color:var(--mint-d);text-transform:none;letter-spacing:0;font-size:.9rem}
.kz-pz-hero p.kz-pz-from{background:var(--sky-l);color:var(--navy)}
.kz-pz-hero p.kz-pz-from strong{color:var(--mint-d)}
.kz-pz a.kz-pz-btn{background:var(--mint);color:#fff;box-shadow:0 8px 20px rgba(47,165,136,.3)}
.kz-pz a.kz-pz-btn:hover{background:var(--mint-d)}
.kz-pz a.kz-pz-btn.kz-pz-btn-ghost{background:transparent;color:var(--navy);border:2px solid var(--navy);box-shadow:none}
.kz-pz a.kz-pz-btn.kz-pz-btn-ghost:hover{background:var(--sky-l)}
.kz-pz-cta a.kz-pz-btn.kz-pz-btn-ghost{color:var(--navy)}
.kz-pz-h2,.kz-pz h2,.kz-pz h3{font-family:'Baloo 2',sans-serif;color:var(--navy)}
.kz-pz-card{border:0;border-bottom:6px solid var(--c,var(--mint));border-radius:var(--r);box-shadow:var(--shadow);padding:28px 26px 26px}
.kz-pz-apps .kz-pz-card{padding-bottom:56px}
a.kz-pz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.kz-pz-icon{width:64px;height:64px;border-radius:20px;background:var(--bg,var(--mint-l));color:var(--c,var(--mint-d))}
.kz-pz-card h3{font-size:1.5rem}
.kz-pz-card p{color:var(--muted)}
.kz-pz-go{color:var(--c,var(--mint-d))}
.kz-pz-grid .kz-pz-card:nth-child(4n+1){--c:#2fa588;--bg:var(--mint-l)}
.kz-pz-grid .kz-pz-card:nth-child(4n+2){--c:#3b82d6;--bg:var(--sky-l)}
.kz-pz-grid .kz-pz-card:nth-child(4n+3){--c:#d99a00;--bg:#FFF4CC}
.kz-pz-grid .kz-pz-card:nth-child(4n+4){--c:#12285A;--bg:#E6EAF5}
.kz-pz-live{border-color:transparent}
.kz-pz-ribbon{background:var(--sun);color:var(--navy)}
.kz-pz-ribbon.kz-pz-ribbon-on{background:var(--mint-l);color:var(--mint-d)}
.kz-pz-soon{background:#fff}
.kz-pz-soon .kz-pz-icon{background:#E6EAF5;color:#8a97b8}
.kz-pz-more{border:2px dashed var(--sky);border-radius:var(--r)}
.kz-pz-more .kz-pz-icon{border-color:var(--sky);color:var(--sky)}
.kz-pz-plans{border:0;border-radius:var(--r);box-shadow:var(--shadow)}
.kz-pz-plans h2{color:var(--navy)}
.kz-pz-plan{background:var(--ice);border-radius:20px}
.kz-pz-plan-price{color:var(--navy)}
.kz-pz-plan-best{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);border-color:var(--sun)}
.kz-pz-plan-flag{background:var(--sun);color:var(--navy)}
.kz-pz-plans a.kz-pz-btn{background:var(--mint);color:#fff}
.kz-pz-plans a.kz-pz-btn:hover{background:var(--mint-d)}
.kz-pz-plans a.kz-pz-btn.kz-pz-btn-ghost{background:transparent;color:var(--navy);border:2px solid var(--navy)}
.kz-pz-why div{background:var(--mint-l);border-left-color:var(--mint);border-radius:18px}
.kz-pz-cta{background:var(--sky-l);border:0;border-radius:var(--r)}
/* Buy page (/buy/): match the home page look (Nunito/Baloo, rounded cards, mint buttons, mint/sky palette) */
.kz-page-narrow h1{font-size:clamp(2rem,4vw,2.8rem);font-weight:800}
.kz-page-narrow>p{color:var(--muted)}
.kz-buy-card,.kz-form.kz-buy,.kz-buy-card input,.kz-buy-card textarea,.kz-buy-card button{font-family:'Nunito',system-ui,sans-serif}
.kz-buy-card{border-radius:var(--r);box-shadow:var(--shadow)}
.kz-buy-side{background:radial-gradient(circle at 88% 8%,rgba(76,195,165,.45),transparent 50%),linear-gradient(150deg,var(--navy) 0%,var(--navy-2) 100%)}
.kz-buy-side::before{background:radial-gradient(circle,rgba(123,179,240,.35) 0%,rgba(123,179,240,0) 70%)}
.kz-buy-head h3,.kz-buy-title{font-family:'Baloo 2',sans-serif}
.kz-buy-badge{background:var(--sun);color:var(--navy);box-shadow:none}
.kz-buy-ai{background:rgba(255,255,255,.1);border-left-color:var(--mint)}
.kz-buy-ai-tag{color:var(--sun)}
.kz-buy-list li::before{background:var(--mint);box-shadow:none}
.kz-buy-app-ico{color:var(--sun)}
.kz-buy-dev svg{stroke:var(--sun)}
.kz-buy-term-side{color:var(--sun)}
.kz-form.kz-buy{background:#fff}
.kz-buy .kz-buy-title{color:var(--navy)}
.kz-buy .kz-buy-title::after{background:linear-gradient(90deg,var(--mint),rgba(76,195,165,0))}
.kz-buy .kz-field label,.kz-buy-terms .kz-label-block{color:var(--navy)}
.kz-buy .kz-field input[type=text],.kz-buy .kz-field input[type=email],.kz-buy .kz-field input[type=tel]{border:2px solid #d5deee;background:var(--ice);border-radius:12px}
.kz-buy .kz-field input:focus{border-color:var(--mint);box-shadow:0 0 0 3px rgba(76,195,165,.25)}
.kz-opt-in{border-radius:16px;border-color:#d5deee}
.kz-opt-in strong,.kz-opt-in em{color:var(--navy)}
.kz-opt:hover .kz-opt-in{border-color:var(--mint)}
.kz-opt input:checked + .kz-opt-in{border-color:var(--mint);background:var(--mint-l);box-shadow:0 0 0 3px rgba(76,195,165,.3)}
.kz-opt input:focus-visible + .kz-opt-in{outline-color:var(--navy)}
.kz-buy-terms .kz-terms-box{border:2px solid #d5deee;border-radius:12px;background:var(--ice)}
.kz-buy-terms .kz-terms-box strong{color:var(--navy)}
.kz-buy-terms .kz-check input{accent-color:var(--mint-d)}
.kz-buy .kz-submit{background:var(--mint);color:#fff;border-radius:999px;box-shadow:0 8px 20px rgba(47,165,136,.3);font-family:'Baloo 2',sans-serif}
.kz-buy .kz-submit:hover,.kz-buy .kz-submit:focus{background:var(--mint-d);filter:none}
.kz-buy-term{color:var(--navy)}
/* Flashcards game (/flashcards/): page background and card match the home page */
body:has(.mnq-quiz){background:radial-gradient(600px 400px at 10% 8%,var(--mint-l),transparent 70%),radial-gradient(600px 450px at 95% 15%,var(--sky-l),transparent 70%),var(--ice);min-height:100vh}
.mnq-quiz{box-shadow:0 10px 30px rgba(18,40,90,.12)!important}.mnq-quiz .mnq-staff-wrap{border-radius:22px;background:#fff;border:2px solid var(--mint-l);box-shadow:0 10px 24px rgba(18,40,90,.12)!important}
.mnq-quiz .mnq-clef-group,.mnq-quiz .mnq-fullscreen-btn,.mnq-quiz .mnq-exit-btn{border-color:var(--mint)!important}
/* Made-by-a-music-teacher block (home) and About page */
.h-teacher-sec{padding:30px 0}
.h-teacher{display:flex;align-items:center;gap:30px;background:#fff;border-radius:var(--r);padding:34px 38px;box-shadow:var(--shadow);border-left:8px solid var(--mint)}
.h-teacher-ico{flex:none;width:96px;height:96px;border-radius:28px;display:grid;place-items:center;font-size:3rem;background:var(--mint-l)}
.h-teacher-txt h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800;margin:.35em 0 .2em}
.h-teacher-txt p{color:var(--muted);font-size:1.08rem;margin:0 0 18px;max-width:640px}
.ab-hero .h-lead{max-width:520px}
.ab-story{max-width:780px}
.ab-story p{font-size:1.12rem;color:var(--muted);margin:0 0 1.1em}
.ab-story strong{color:var(--navy)}
.ab-values{background:#fff}
.h-banner .kz-btn-ghost{border-color:var(--navy);color:var(--navy)}
@media(max-width:700px){.h-teacher{flex-direction:column;text-align:center;padding:28px 22px;border-left:0;border-top:8px solid var(--mint)}.h-teacher-txt p{margin-left:auto;margin-right:auto}}
/* "Apps that listen" block (home) */
.h-listen-sec{padding:30px 0}
.h-listen{display:grid;grid-template-columns:1.4fr .6fr;gap:30px;align-items:center;background:linear-gradient(135deg,var(--sky-l),var(--mint-l));border-radius:var(--r);padding:38px 42px;box-shadow:var(--shadow)}
.h-listen-txt h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin:.35em 0 .3em}
.h-listen-txt p{color:var(--muted);font-size:1.08rem;margin:0 0 16px}
.h-listen-chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.h-listen-chips li{background:#fff;color:var(--navy);font-weight:700;font-size:.95rem;padding:8px 16px;border-radius:999px;box-shadow:0 4px 12px rgba(18,40,90,.08)}
.h-listen-art{display:grid;grid-template-columns:1fr 1fr;gap:14px;justify-items:center;align-items:center;font-size:2.6rem}
.h-listen-art span{width:92px;height:92px;border-radius:26px;background:#fff;display:grid;place-items:center;box-shadow:var(--shadow)}
.h-listen-art i{font-style:normal;color:var(--mint-d);font-size:2.4rem}
@media(max-width:800px){.h-listen{grid-template-columns:1fr;padding:28px 22px}.h-listen-art{display:none}}