:root{
  --paper:#F4F7FF;--surface:#FFFFFF;--surface-2:#EAF1FF;--ink:#0E1F4D;--ink-2:#4A587A;--ink-3:#7B87A6;
  --blue:#2B63F0;--blue-ink:#FFFFFF;--sky:#3BA6F7;--sun:#F6B23C;--sun-soft:#FFEFC9;--mint:#3DBF95;--mint-soft:#D9F5EA;
  --coral:#F27D6B;--coral-soft:#FFE1DB;--line:#D3DDF3;--rule:#B9C8EC;--margin:#F29A9A;
  --sky-bg:#DCEBFF;--hill-1:#B8D6FF;--hill-2:#8FBDFF;--desk:#F2C98A;--desk-2:#D9A75E;
  --shadow:0 18px 40px -22px rgba(14,31,77,.45);
  --r-s:10px;--r-m:18px;--r-l:32px;
  --f-display:"Fredoka",ui-rounded,"Arial Rounded MT Bold",system-ui,sans-serif;
  --f-body:"Lexend",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
  box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0A1331;--surface:#111C44;--surface-2:#17245A;--ink:#EEF3FF;--ink-2:#AEBBDD;--ink-3:#7E8DB8;
    --blue:#6C95FF;--blue-ink:#0A1331;--sky:#55B8FF;--sun:#F8BF55;--sun-soft:#3A3218;--mint:#4FD3A8;--mint-soft:#143A35;
    --coral:#FF8E7C;--coral-soft:#3D2028;--line:#25336C;--rule:#2D3D7A;--margin:#A85A6A;
    --sky-bg:#14205A;--hill-1:#1C2C6E;--hill-2:#22378A;--desk:#5A4A35;--desk-2:#45382A;
    --shadow:0 18px 40px -22px rgba(0,0,0,.8);color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0A1331;--surface:#111C44;--surface-2:#17245A;--ink:#EEF3FF;--ink-2:#AEBBDD;--ink-3:#7E8DB8;
  --blue:#6C95FF;--blue-ink:#0A1331;--sky:#55B8FF;--sun:#F8BF55;--sun-soft:#3A3218;--mint:#4FD3A8;--mint-soft:#143A35;
  --coral:#FF8E7C;--coral-soft:#3D2028;--line:#25336C;--rule:#2D3D7A;--margin:#A85A6A;
  --sky-bg:#14205A;--hill-1:#1C2C6E;--hill-2:#22378A;--desk:#5A4A35;--desk-2:#45382A;
  --shadow:0 18px 40px -22px rgba(0,0,0,.8);color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 90px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.65;font-weight:350;transition:background .5s,color .5s;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--paper)}
img,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.08;margin:0 0 .4em;letter-spacing:-.01em}
h1{font-size:clamp(2.5rem,6vw,4.6rem)}
h2{font-size:clamp(2rem,4.2vw,3.2rem)}
h3{font-size:1.5rem}
p{margin:0 0 1em;max-width:62ch}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
.muted{color:var(--ink-2)}
:focus-visible{outline:3px solid var(--sun);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:99;background:var(--surface);padding:8px 14px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.55em;font-family:var(--f-display);font-weight:600;font-size:1.05rem;padding:.8em 1.4em;border-radius:999px;border:0;cursor:pointer;text-decoration:none;background:var(--blue);color:var(--blue-ink);box-shadow:0 6px 0 0 color-mix(in srgb,var(--blue) 55%,#000);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 0 0 color-mix(in srgb,var(--blue) 55%,#000)}
.btn:active{transform:translateY(4px);box-shadow:0 2px 0 0 color-mix(in srgb,var(--blue) 55%,#000)}
.btn.sun{background:var(--sun);color:#3B2600;box-shadow:0 6px 0 0 #C98A1F}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line)}
.btn.ghost:hover{box-shadow:inset 0 0 0 2px var(--blue)}
.btn.small{font-size:.95rem;padding:.6em 1.1em}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s}
.top.scrolled{border-bottom-color:var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;height:78px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;margin-right:auto}
.brand-mark{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:#fff;transition:transform .5s}
.brand:hover .brand-mark{transform:rotate(-8deg)}
.brand-mark img{width:36px}
.brand-word{display:flex;flex-direction:column;line-height:1}
.brand-word strong{font-family:var(--f-display);font-weight:700;font-size:1.65rem;letter-spacing:-.02em;color:var(--ink)}
.brand-word strong span{color:var(--blue)}
.brand-word small{font-size:.62rem;letter-spacing:.32em;color:var(--ink-3);margin-top:3px}
.nav{display:flex;gap:4px}
.nav a{text-decoration:none;font-family:var(--f-display);font-weight:500;font-size:1.05rem;padding:.45em .9em;border-radius:999px;color:var(--ink-2);position:relative}
.nav>a,.dd-head>a{transition:color .25s,transform .3s cubic-bezier(.5,1.6,.4,1)}
.nav>a::after,.dd-head>a::after{content:"";position:absolute;left:.9em;right:var(--pr,.9em);bottom:.05em;height:8px;pointer-events:none;
  background:var(--blue);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='8'%3E%3Cpath d='M0 4Q5 0 10 4T20 4' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E") 0 0/20px 8px repeat-x;
          mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='8'%3E%3Cpath d='M0 4Q5 0 10 4T20 4' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E") 0 0/20px 8px repeat-x;
  clip-path:inset(0 100% 0 0);transition:clip-path .45s cubic-bezier(.6,0,.2,1),background .25s}
.nav>a:hover,.dd-head>a:hover,.nav>a:focus-visible,.dd-head>a:focus-visible{color:var(--ink);transform:translateY(-2px)}
.nav>a:hover::after,.dd-head>a:hover::after,.nav>a:focus-visible::after,.dd-head>a:focus-visible::after{clip-path:inset(0 0 0 0);animation:navWave .9s linear infinite}
@keyframes navWave{to{-webkit-mask-position:20px 0;mask-position:20px 0}}
.nav>a.on,.dd-head>a.on{color:var(--ink)}
.nav>a.on::before,.dd-head>a.on::before{content:"";position:absolute;top:.2em;right:calc(var(--pr,.9em) - .45em);width:7px;height:7px;border-radius:50%;background:var(--sun);box-shadow:0 0 0 3px var(--sun-soft);animation:navDot .5s cubic-bezier(.5,1.6,.4,1)}
.nav>a.on::after,.dd-head>a.on::after{background:var(--sun);clip-path:inset(0 0 0 0);height:9px}
@keyframes navDot{from{transform:scale(0)}to{transform:scale(1)}}
/* courses dropdown */
.nav-dd{position:relative}
.dd-head{display:flex;align-items:center}
.dd-head>a{padding-right:.35em!important;--pr:.35em}
.dd-toggle{width:28px;height:28px;margin-left:-4px;border:0;border-radius:50%;background:transparent;color:var(--ink-2);cursor:pointer;display:grid;place-items:center;padding:0}
.dd-toggle:hover{background:var(--surface-2);color:var(--ink)}
.dd-toggle svg{width:18px;height:18px;transition:transform .35s cubic-bezier(.5,1.6,.4,1)}
.nav-dd.open .dd-toggle svg{transform:rotate(180deg)}
.dd-menu{position:absolute;top:calc(100% + 10px);left:50%;width:340px;z-index:60;
  opacity:0;visibility:hidden;transform:translate(-50%,-8px) scale(.97);transform-origin:top center;
  transition:opacity .22s ease,transform .3s cubic-bezier(.2,.9,.3,1.2),visibility 0s linear .3s}
.dd-menu::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px} /* hover bridge */
.dd-inner{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--shadow);padding:8px;display:flex;flex-direction:column;gap:2px}
.nav-dd.open .dd-menu{opacity:1;visibility:visible;transform:translate(-50%,0) scale(1);transition-delay:0s}
.nav .dd-menu a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;font-family:var(--f-body);font-size:.95rem;color:var(--ink);
  opacity:0;transform:translateY(-6px);transition:opacity .25s,transform .3s cubic-bezier(.2,.9,.3,1.2),background .2s}
.nav-dd.open .dd-menu a{opacity:1;transform:none}
.nav-dd.open .dd-menu a:nth-child(1){transition-delay:.03s,.03s,0s}
.nav-dd.open .dd-menu a:nth-child(2){transition-delay:.07s,.07s,0s}
.nav-dd.open .dd-menu a:nth-child(3){transition-delay:.11s,.11s,0s}
.nav-dd.open .dd-menu a:nth-child(4){transition-delay:.15s,.15s,0s}
.nav-dd.open .dd-menu a:nth-child(5){transition-delay:.19s,.19s,0s}
.nav .dd-menu a:hover,.nav .dd-menu a.cur{background:color-mix(in srgb,var(--c,var(--blue)) 14%,transparent)}
.dd-menu b{display:block;font-family:var(--f-display);font-weight:600;font-size:1.02rem}
.dd-menu small{display:block;color:var(--ink-3);font-size:.8rem;margin-top:2px}
.dd-ic{width:40px;height:40px;border-radius:12px;flex:none;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 18%,transparent);transition:transform .4s cubic-bezier(.5,1.6,.4,1)}
.dd-ic svg{width:24px;height:24px}
.dd-menu a:hover .dd-ic{transform:rotate(-10deg) scale(1.08)}
.nav .dd-menu .dd-all{justify-content:space-between;margin-top:4px;border-top:1px dashed var(--line);border-radius:0 0 12px 12px;font-family:var(--f-display);font-weight:500;color:var(--blue)}
.dd-all svg{width:18px;height:18px;transition:transform .25s}
.dd-all:hover svg{transform:translateX(4px)}
@media (hover:hover) and (min-width:921px){.nav-dd:not(.hush):hover .dd-menu{opacity:1;visibility:visible;transform:translate(-50%,0) scale(1);transition-delay:0s}
  .nav-dd:not(.hush):hover .dd-menu a{opacity:1;transform:none}
  .nav-dd:not(.hush):hover .dd-toggle svg{transform:rotate(180deg)}}
.top-actions{display:flex;align-items:center;gap:10px}
.theme-btn{width:48px;height:48px;border-radius:50%;border:2px solid var(--line);background:var(--surface);cursor:pointer;display:grid;place-items:center;color:var(--ink)}
.theme-btn svg{width:26px;height:26px;transition:transform .6s cubic-bezier(.5,1.6,.4,1)}
.theme-btn .rays{transition:opacity .3s,transform .5s;transform-origin:12px 12px}
.theme-btn .moon-cut{transition:transform .5s;}
[data-mode="dark"] .theme-btn svg{transform:rotate(-40deg)}
[data-mode="dark"] .theme-btn .rays{opacity:0;transform:scale(.4)}
[data-mode="light"] .theme-btn .moon-cut{transform:translate(12px,-12px)}
.menu-btn{display:none;width:48px;height:48px;border-radius:14px;border:2px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
@media (max-width:920px){
  .nav{position:fixed;inset:calc(78px + env(safe-area-inset-top,0px)) 12px auto;flex-direction:column;background:var(--surface);padding:12px;border-radius:var(--r-m);box-shadow:var(--shadow);border:1px solid var(--line);transform:translateY(-12px);opacity:0;pointer-events:none;transition:.25s}
  .nav.open{transform:none;opacity:1;pointer-events:auto}
  .nav a{font-size:1.2rem;padding:.7em 1em}
  .nav>a::after,.dd-head>a::after{left:1em;right:auto;width:2.6em;bottom:.25em}
  .nav>a.on::before,.dd-head>a.on::before{right:auto;left:.35em;top:50%;margin-top:-3.5px}
  .nav>a:hover,.dd-head>a:hover{transform:none}
  .nav{max-height:calc(100dvh - 100px);overflow-y:auto}
  .dd-head{justify-content:space-between}
  .dd-head>a{flex:1}
  .dd-toggle{width:44px;height:44px}
  .dd-toggle svg{width:22px;height:22px}
  .dd-menu{position:static;width:auto;opacity:1;visibility:visible;transform:none;display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s cubic-bezier(.2,.8,.2,1)}
  .dd-menu::before{display:none}
  .nav-dd.open .dd-menu{transform:none;grid-template-rows:1fr}
  .dd-inner{min-height:0;overflow:hidden;box-shadow:none;border:0;background:transparent;padding:0 0 0 12px}
  .nav .dd-menu a{font-size:.95rem;padding:8px 10px}
  .nav-dd.open .dd-inner{padding-bottom:6px}
  .menu-btn{display:grid;place-items:center}
  .top-actions .btn{display:none}
}

/* views */
.view{display:none}
.view.active{display:block;animation:viewIn .6s cubic-bezier(.2,.8,.2,1)}
@keyframes viewIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
section{position:relative}
.pad{padding:clamp(64px,9vw,120px) 0}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}

/* ========== HOME ========== */
.hero{padding:clamp(28px,5vw,60px) 0 40px;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.hero h1{margin-bottom:.35em}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line span{display:inline-block;animation:rise 1s cubic-bezier(.2,.8,.2,1) both}
.hero h1 .line:nth-child(2) span{animation-delay:.12s;color:var(--blue)}
@keyframes rise{from{transform:translateY(105%)}to{transform:none}}
.hero .lead{font-size:1.15rem;color:var(--ink-2);margin-bottom:1.6em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.hero-note{display:flex;align-items:center;gap:10px;font-size:.95rem;color:var(--ink-2)}
.hero-note svg{width:22px;flex:none}
.scene{position:relative}
.scene svg{width:100%;height:auto;overflow:visible}
.sky{fill:var(--sky-bg);transition:fill .6s}
.hill1{fill:var(--hill-1);transition:fill .6s}.hill2{fill:var(--hill-2);transition:fill .6s}
.desk{fill:var(--desk)}.desk2{fill:var(--desk-2)}
.sun-g{transform-origin:400px 170px;animation:sunrise 1.6s .3s cubic-bezier(.2,.8,.2,1) both}
@keyframes sunrise{from{transform:translateY(120px)}to{transform:none}}
.sun-rays{transform-origin:400px 170px;animation:spin 40s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.sun-core{fill:var(--sun);transition:fill .6s}
.moon-shade{fill:var(--sky-bg);opacity:0;transform:translate(40px,-30px);transition:.8s}
.stars{opacity:0;transition:opacity .8s}
[data-mode="dark"] .sun-rays{opacity:0}
[data-mode="dark"] .sun-core{fill:#F3F0D8}
[data-mode="dark"] .moon-shade{opacity:1;transform:translate(26px,-18px)}
[data-mode="dark"] .stars{opacity:1}
.float{animation:bob 6s ease-in-out infinite}
.float.b{animation-duration:7.5s;animation-delay:-2s}.float.c{animation-duration:5s;animation-delay:-1s}
@keyframes bob{50%{transform:translateY(-12px) rotate(4deg)}}
.twinkle{animation:tw 2.4s ease-in-out infinite;transform-box:fill-box;transform-origin:center}
@keyframes tw{50%{transform:scale(.6);opacity:.6}}
.pencil-move{animation:write 3.2s ease-in-out infinite;transform-box:fill-box}
@keyframes write{0%,100%{transform:translate(0,0) rotate(0)}25%{transform:translate(8px,2px) rotate(-4deg)}50%{transform:translate(16px,-1px)}75%{transform:translate(24px,2px) rotate(-3deg)}}

/* stuck / solved card */
.ss-card{position:absolute;left:-6%;bottom:-6%;width:62%;background:var(--surface);border-radius:var(--r-m);box-shadow:var(--shadow);padding:14px 16px 12px;border:1px solid var(--line)}
.ss-card svg{width:100%}
.ss-top{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.8rem;color:var(--ink-2);margin-bottom:4px}
.ss-toggle{display:flex;background:var(--surface-2);border-radius:999px;padding:3px}
.ss-toggle button{border:0;background:transparent;font:600 .8rem var(--f-display);padding:.35em .9em;border-radius:999px;color:var(--ink-2);cursor:pointer}
.ss-toggle button.on{background:var(--ink);color:var(--paper)}
.ss-scribble{fill:none;stroke:var(--coral);stroke-width:2.4;stroke-linecap:round;stroke-dasharray:900;stroke-dashoffset:0;transition:stroke-dashoffset .9s,opacity .5s}
.ss-word{font:600 46px var(--f-display);fill:transparent;stroke:var(--blue);stroke-width:1.2;stroke-dasharray:400;stroke-dashoffset:400;transition:stroke-dashoffset 1.6s ease,fill .6s 1.2s}
.ss-card.solved .ss-scribble{stroke-dashoffset:900;opacity:0}
.ss-card.solved .ss-word{stroke-dashoffset:0;fill:var(--blue)}
.ss-rule{stroke:var(--rule);stroke-width:1}
.ss-rule.red{stroke:var(--margin)}

/* sun band */
.sunband{background:var(--ink);color:var(--paper);overflow:hidden;padding:clamp(60px,8vw,110px) 0}
[data-mode="dark"] .sunband{background:var(--surface-2);color:var(--ink)}
.sunband .wrap{display:grid;grid-template-columns:auto 1fr;gap:clamp(24px,5vw,70px);align-items:center}
.sunband h2{font-size:clamp(2.2rem,5.4vw,4.4rem);margin:0}
.sunband h2 em{font-style:normal;color:var(--sun)}
.sunband p{color:inherit;opacity:.8;margin-top:1em}
.bigsun{width:clamp(140px,22vw,260px)}
.bigsun .r{transform-origin:100px 100px;animation:spin 30s linear infinite}

/* course tiles home */
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap;margin-bottom:40px}
.sec-head p{margin:0}
.tiles{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.tile{grid-column:span 6;position:relative;border-radius:var(--r-l);padding:28px;text-decoration:none;color:var(--ink);overflow:hidden;min-height:280px;display:flex;flex-direction:column;justify-content:flex-end;transition:transform .35s cubic-bezier(.2,.8,.2,1)}
.tile:hover{transform:translateY(-6px) rotate(-.4deg)}
.tile h3{font-size:1.9rem;margin-bottom:.2em}
.tile p{margin:0;color:var(--ink-2);max-width:34ch}
.tile .art{position:absolute;right:18px;top:18px;width:45%;max-width:220px;transition:transform .5s}
.tile:hover .art{transform:scale(1.06) rotate(3deg)}
.tile .cls{position:absolute;left:28px;top:24px;font:600 .85rem var(--f-display);background:var(--surface);padding:.3em .8em;border-radius:999px}
.t-hw{background:var(--sun-soft);grid-column:span 7}
.t-ma{background:var(--surface-2);grid-column:span 5;border-radius:var(--r-l) var(--r-l) var(--r-l) 6px}
.t-en{background:var(--coral-soft);grid-column:span 5;border-radius:6px var(--r-l) var(--r-l) var(--r-l)}
.t-ld{background:var(--mint-soft);grid-column:span 7}
.t-ma{background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:22px 22px}
.t-hw{background-image:repeating-linear-gradient(to bottom,transparent 0 27px,color-mix(in srgb,var(--sun) 40%,transparent) 27px 28px)}
@media (max-width:820px){.tile,.t-hw,.t-ma,.t-en,.t-ld{grid-column:1/-1}}

/* path steps */
.journey{background:var(--surface);border-block:1px solid var(--line)}
.path{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:20px}
.path::before{content:"";position:absolute;left:4%;right:4%;top:34px;border-top:3px dashed var(--line)}
.stop{position:relative;text-align:left}
.stop .dot{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;font:700 1.5rem var(--f-display);background:var(--paper);border:3px solid var(--blue);color:var(--blue);margin-bottom:14px;position:relative;z-index:1}
.stop:nth-child(4) .dot{border-color:var(--sun);color:#B87A10;background:var(--sun-soft)}
.stop h4{font-size:1.2rem;margin-bottom:.3em}
.stop p{font-size:.95rem;color:var(--ink-2)}
@media (max-width:820px){.path{grid-template-columns:1fr}.path::before{left:33px;right:auto;top:0;bottom:0;border-top:0;border-left:3px dashed var(--line)}.stop{display:grid;grid-template-columns:68px 1fr;gap:16px}}

/* practical */
.practical .wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:50px;align-items:center}
.do-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.do{background:var(--surface);border-radius:var(--r-m);padding:20px;border:2px solid var(--line);display:flex;gap:14px;align-items:flex-start}
.do svg{width:44px;flex:none}
.do h4{font-size:1.1rem;margin:0 0 .2em}
.do p{font-size:.9rem;margin:0;color:var(--ink-2)}
@media (max-width:820px){.practical .wrap{grid-template-columns:1fr}.do-list{grid-template-columns:1fr}}

/* camps tickets */
.tickets{display:flex;gap:18px;overflow-x:auto;padding:10px 4px 22px;scroll-snap-type:x mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch;cursor:grab;
  -webkit-mask:linear-gradient(90deg,transparent 0,#000 var(--fl,0px),#000 calc(100% - var(--fr,0px)),transparent 100%);mask:linear-gradient(90deg,transparent 0,#000 var(--fl,0px),#000 calc(100% - var(--fr,0px)),transparent 100%)}
.tickets::-webkit-scrollbar{display:none}
.tickets.drag{cursor:grabbing;scroll-snap-type:none;user-select:none}
.carousel.at-start .tickets{--fl:0px}.carousel:not(.at-start) .tickets{--fl:40px}
.carousel.at-end .tickets{--fr:0px}.carousel:not(.at-end) .tickets{--fr:40px}
.car-ctrl{display:flex;align-items:center;gap:14px;margin-top:6px}
.car-btn{width:46px;height:46px;flex:none;border-radius:50%;border:2px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;display:grid;place-items:center;
  box-shadow:0 4px 0 0 var(--line);transition:transform .25s cubic-bezier(.5,1.6,.4,1),border-color .2s,background .2s,opacity .25s,box-shadow .2s}
.car-btn svg{width:20px;height:20px}
.car-btn:hover:not(:disabled){border-color:var(--blue);background:var(--surface-2);transform:translateY(-2px)}
.car-btn:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 0 var(--line)}
.car-btn:disabled{opacity:.35;cursor:default;box-shadow:none}
.car-track{flex:1;height:10px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);position:relative;overflow:hidden;cursor:pointer}
.car-thumb{position:absolute;top:0;bottom:0;left:0;border-radius:999px;background:linear-gradient(90deg,var(--sun),#F2994A);width:var(--w,30%);transform:translateX(var(--x,0));transition:width .2s}
.car-thumb::after{content:"";position:absolute;right:3px;top:50%;width:4px;height:4px;margin-top:-2px;border-radius:50%;background:#fff;opacity:.8}
.ticket{flex:0 0 250px;scroll-snap-align:start;background:var(--surface);border-radius:var(--r-m);position:relative;padding:22px 22px 18px;border:2px dashed var(--line);--c:var(--blue)}
.ticket::before,.ticket::after{content:"";position:absolute;top:58%;width:22px;height:22px;border-radius:50%;background:var(--paper);border:2px dashed var(--line)}
.ticket::before{left:-13px}.ticket::after{right:-13px}
.ticket .ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 18%,transparent);margin-bottom:14px}
.ticket .ico svg{width:30px}
.ticket h4{font-size:1.2rem;margin-bottom:.3em}
.ticket p{font-size:.9rem;color:var(--ink-2);margin:0}
.ticket small{display:block;margin-top:16px;padding-top:12px;border-top:2px dashed var(--line);color:var(--ink-3);font-size:.8rem}

/* faq */
.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:var(--surface);border-radius:var(--r-m);border:1px solid var(--line);padding:4px 22px;transition:background .3s}
.faq details[open]{background:var(--surface-2)}
.faq summary{list-style:none;cursor:pointer;font:600 1.15rem var(--f-display);padding:16px 30px 16px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:0;top:50%;width:14px;height:14px;margin-top:-9px;border-right:3px solid var(--blue);border-bottom:3px solid var(--blue);transform:rotate(45deg);transition:transform .3s}
.faq details[open] summary::after{transform:rotate(225deg);margin-top:-2px}
.faq details p{color:var(--ink-2);padding-bottom:12px}

/* cta band */
.cta-band{margin:0 auto clamp(60px,8vw,100px);width:min(1180px,100% - 40px);border-radius:40px;background:var(--blue);color:#fff;padding:clamp(36px,6vw,70px);display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:center;overflow:hidden;position:relative}
[data-mode="dark"] .cta-band{background:#1E3A9E}
.cta-band h2{color:#fff;margin:0 0 .3em}
.cta-band p{color:#DCE6FF;margin:0}
.cta-band .btn.sun{justify-self:start}
.cta-band .deco{position:absolute;right:-40px;bottom:-60px;width:260px;opacity:.25}
@media (max-width:820px){.cta-band{grid-template-columns:1fr}}

/* ========== ABOUT ========== */
.about-hero{padding:clamp(40px,7vw,90px) 0 30px}
.equation{display:flex;flex-wrap:wrap;align-items:center;gap:clamp(10px,2vw,22px);font:700 clamp(2.6rem,8vw,6.4rem)/1 var(--f-display);letter-spacing:-.03em;margin-bottom:28px}
.equation .op{color:var(--ink-3);font-weight:500}
.equation .sol{color:var(--blue);position:relative}
.equation .sunword{display:inline-flex;align-items:center;gap:.15em;color:#B87A10}
[data-mode="dark"] .equation .sunword{color:var(--sun)}
.equation .sunword svg{width:.9em;height:.9em}
.eq-key{display:grid;grid-template-columns:repeat(3,auto);gap:clamp(14px,3vw,40px);color:var(--ink-2);font-size:.95rem;max-width:760px}
.eq-key b{display:block;font-family:var(--f-display);color:var(--ink);font-size:1.15rem}
.notebook{background:var(--surface);background-image:repeating-linear-gradient(to bottom,transparent 0 33px,var(--line) 33px 34px);border-radius:var(--r-l);padding:48px 40px 40px 96px;position:relative;box-shadow:var(--shadow)}
.notebook::before{content:"";position:absolute;left:64px;top:0;bottom:0;border-left:2px solid var(--margin)}
.notebook::after{content:"";position:absolute;left:22px;top:40px;bottom:40px;width:16px;background:radial-gradient(circle,var(--paper) 6px,transparent 7px) 0 0/16px 60px repeat-y}
.notebook p{line-height:34px;font-size:1.08rem;margin-bottom:34px}
.notebook h2{line-height:1.2;margin-bottom:24px}
.about-story .wrap{display:grid;grid-template-columns:1.3fr .9fr;gap:40px;align-items:center}
@media (max-width:820px){.about-story .wrap{grid-template-columns:1fr}.notebook{padding:40px 22px 30px 60px}.notebook::before{left:42px}.notebook::after{left:12px}}
.approach{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:a;margin-top:30px}
.ap{padding:26px 24px 30px;border-left:3px solid var(--line);position:relative}
.ap:first-child{border-left-color:transparent}
.ap .n{font:700 3.6rem/1 var(--f-display);color:var(--surface-2);-webkit-text-stroke:2px var(--blue);margin-bottom:14px}
.ap:last-child .n{-webkit-text-stroke-color:var(--sun);color:var(--sun-soft)}
.ap h3{font-size:1.4rem}
.ap p{color:var(--ink-2);font-size:.95rem}
@media (max-width:820px){.approach{grid-template-columns:1fr 1fr}.ap{border-left:0;border-top:3px solid var(--line)}}
.promise{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pr{padding:28px;border-radius:var(--r-m);background:var(--surface);position:relative;border:1px solid var(--line)}
.pr:nth-child(2){transform:translateY(24px);background:var(--sun-soft);border-color:transparent}
.pr svg{width:50px;margin-bottom:16px}
.pr h3{font-size:1.3rem}
.pr p{color:var(--ink-2);margin:0;font-size:.97rem}
@media (max-width:820px){.promise{grid-template-columns:1fr}.pr:nth-child(2){transform:none}}
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line)}
.split > div{padding:clamp(28px,4vw,48px)}
.split .on-l{background:var(--surface)}
.split .off-l{background:var(--surface-2)}
.split h3{font-size:1.8rem;display:flex;align-items:center;gap:12px}
.split h3 svg{width:40px}
.split ul{padding:0;margin:0;list-style:none}
.split li{padding:10px 0 10px 30px;position:relative;border-bottom:1px dashed var(--line)}
.split li::before{content:"";position:absolute;left:4px;top:19px;width:10px;height:10px;border-radius:3px;background:var(--blue);transform:rotate(45deg)}
.split .off-l li::before{background:var(--sun)}
@media (max-width:820px){.split{grid-template-columns:1fr}}

/* ========== COURSES INDEX ========== */
.courses-hero{padding:clamp(40px,7vw,80px) 0 20px}
.board{background:var(--surface);border-radius:var(--r-l);border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow)}
.board-head,.row{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr auto;gap:18px;align-items:center;padding:16px 28px}
.board-head{background:var(--surface-2);font:600 .9rem var(--f-display);color:var(--ink-2)}
.row{border-top:1px solid var(--line);text-decoration:none;color:inherit;padding-block:24px;transition:background .25s}
.row:hover{background:color-mix(in srgb,var(--c) 10%,transparent)}
.row .name{display:flex;align-items:center;gap:18px}
.row .badge{width:64px;height:64px;border-radius:20px;background:color-mix(in srgb,var(--c) 18%,transparent);display:grid;place-items:center;flex:none;transition:transform .4s cubic-bezier(.5,1.6,.4,1)}
.row:hover .badge{transform:rotate(-10deg) scale(1.08)}
.row .badge svg{width:38px}
.row h3{font-size:1.4rem;margin:0}
.row small{display:block;color:var(--ink-2);font-size:.88rem}
.classbar{display:grid;grid-template-columns:repeat(8,1fr);gap:3px}
.classbar i{height:10px;border-radius:3px;background:var(--line)}
.classbar i.y{background:var(--c)}
.row .go{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;border:2px solid var(--line);transition:.3s}
.row:hover .go{background:var(--c);border-color:var(--c);color:#fff}
.row .go svg{width:18px}
@media (max-width:860px){.board-head{display:none}.row{grid-template-columns:1fr auto;row-gap:12px}.row .cell{grid-column:1}.row .go{grid-row:1;grid-column:2}}
.cell-label{display:none;font-size:.78rem;color:var(--ink-3)}
@media (max-width:860px){.cell-label{display:block}}
.materials{display:grid;grid-template-columns:auto 1fr auto;gap:30px;align-items:center;background:var(--sun-soft);border-radius:var(--r-l);padding:clamp(24px,4vw,44px)}
.materials svg{width:110px}
@media (max-width:820px){.materials{grid-template-columns:1fr}}

/* ========== COURSE DETAIL (shared) ========== */
.c-hero{padding:clamp(30px,5vw,60px) 0 clamp(40px,6vw,70px);overflow:hidden}
.c-hero .wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.crumbs{font-size:.9rem;color:var(--ink-3);margin-bottom:18px}
.crumbs a{color:var(--ink-2)}
.c-facts{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 28px}
.c-facts span{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.4em 1em;font-size:.92rem}
.c-facts b{font-family:var(--f-display)}
@media (max-width:860px){.c-hero .wrap,.hero .wrap{grid-template-columns:1fr}.hero .wrap{gap:18px}.hero .scene{order:-1;width:min(100%,460px);margin-inline:auto}.ss-card{position:relative;left:0;bottom:0;width:100%;margin-top:-30px}}
.focus{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.fo{padding:24px 22px;border-radius:var(--r-m);background:var(--surface);border:1px solid var(--line)}
.fo svg{width:40px;margin-bottom:12px}
.fo p{margin:0;font-size:1rem}
@media (max-width:900px){.focus{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.focus{grid-template-columns:1fr}}
.modules{display:grid;gap:0;max-width:880px}
.mod{display:grid;grid-template-columns:90px 1fr;gap:20px;padding:22px 0;border-top:1px solid var(--line)}
.mod .st{font:600 .95rem var(--f-display);color:var(--c,var(--blue))}
.mod .st b{display:block;font-size:2.2rem;line-height:1}
.mod h4{font-size:1.3rem;margin-bottom:.25em}
.mod p{margin:0;color:var(--ink-2)}
.week{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
.wk{border-radius:var(--r-m);padding:24px;background:var(--surface);border:1px solid var(--line)}
.wk h4{font-size:1.2rem}
.wk p{color:var(--ink-2);font-size:.95rem;margin:0}
.wk.hl{background:var(--c);color:#fff;border-color:transparent}
.wk.hl h4,.wk.hl p{color:#fff}
@media (max-width:820px){.week{grid-template-columns:1fr}}
.c-split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
@media (max-width:860px){.c-split{grid-template-columns:1fr}}
.signs{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.signs li{background:var(--surface);border-radius:14px;padding:14px 18px 14px 50px;position:relative;border:1px solid var(--line)}
.signs li::before{content:"";position:absolute;left:18px;top:50%;width:16px;height:16px;margin-top:-8px;border-radius:50%;border:3px solid var(--c,var(--blue))}

/* handwriting */
.hw-theme{--c:#D98E12}
[data-mode="dark"] .hw-theme{--c:#F8BF55}
.hw-paper{background:var(--surface);border-radius:var(--r-l);padding:26px;box-shadow:var(--shadow);border:1px solid var(--line);transform:rotate(1.5deg)}
.hw-paper svg .l1{stroke:var(--rule)}.hw-paper svg .l2{stroke:var(--margin)}
.trace{fill:none;stroke:var(--blue);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}
.trace-ghost{fill:none;stroke:var(--line);stroke-width:5;stroke-dasharray:2 9;stroke-linecap:round;stroke-linejoin:round}
.hw-bar{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:.9rem;color:var(--ink-2)}

/* maths */
.ma-theme{--c:var(--blue)}
.grid-bg{background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:28px 28px}
.game{background:var(--surface);border-radius:var(--r-l);padding:26px;border:1px solid var(--line);box-shadow:var(--shadow)}
.game h4{font-size:1.3rem;margin-bottom:.2em}
.ten-frame{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;max-width:300px;margin:16px 0}
.ten-frame i{aspect-ratio:1;border-radius:10px;border:2px dashed var(--line);display:block;transition:.35s cubic-bezier(.5,1.6,.4,1)}
.ten-frame i.a{background:var(--blue);border:2px solid var(--blue)}
.ten-frame i.b{background:var(--sun);border:2px solid var(--sun);transform:scale(.92)}
.num-pad{display:grid;grid-template-columns:repeat(9,1fr);gap:6px}
.num-pad button{aspect-ratio:1;border-radius:12px;border:2px solid var(--line);background:var(--paper);font:600 1.2rem var(--f-display);color:var(--ink);cursor:pointer;transition:.2s}
.num-pad button:hover{border-color:var(--blue)}
.num-pad button.wrong{animation:shake .4s;border-color:var(--coral)}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.game .msg{min-height:1.6em;margin-top:12px;font-family:var(--f-display);font-weight:500}
.big-q{font:700 2.4rem var(--f-display)}
.big-q span{color:var(--blue)}

/* english */
.en-theme{--c:var(--coral)}
.bubbles .b1,.bubbles .b2{fill:var(--surface);stroke:var(--line);stroke-width:2}
.tiles-row{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}
.ltile{width:62px;height:62px;border-radius:14px;background:var(--coral-soft);border:2px solid var(--coral);font:700 1.8rem var(--f-display);color:var(--ink);cursor:pointer;transition:transform .3s cubic-bezier(.5,1.6,.4,1),opacity .3s}
.ltile:hover{transform:translateY(-4px) rotate(-4deg)}
.ltile.used{opacity:.25;pointer-events:none}
.slots{display:flex;gap:10px}
.slots i{width:62px;height:62px;border-radius:14px;border:2px dashed var(--line);display:grid;place-items:center;font:700 1.8rem var(--f-display);font-style:normal}
.slots i.f{border-style:solid;border-color:var(--mint);background:var(--mint-soft);animation:pop .35s cubic-bezier(.5,1.6,.4,1)}
@keyframes pop{from{transform:scale(.6)}}
.pic{width:90px;height:90px;border-radius:20px;background:var(--surface-2);display:grid;place-items:center}
.pic svg{width:64px}

/* ld */
.ld-theme{--c:var(--mint)}
.checks{display:grid;gap:10px;margin:16px 0}
.checks label{display:flex;gap:14px;align-items:center;background:var(--paper);border-radius:14px;padding:12px 16px;cursor:pointer;border:2px solid var(--line);transition:.2s}
.checks input{appearance:none;width:24px;height:24px;border-radius:8px;border:2px solid var(--ink-3);flex:none;display:grid;place-items:center;transition:.2s;cursor:pointer}
.checks input:checked{background:var(--mint);border-color:var(--mint)}
.checks input:checked::after{content:"";width:6px;height:12px;border:solid #fff;border-width:0 3px 3px 0;transform:rotate(45deg) translate(-1px,-1px)}
.checks label:has(input:checked){border-color:var(--mint);background:var(--mint-soft)}
.pace{display:flex;align-items:end;gap:6px;height:120px;margin-top:10px}
.pace i{flex:1;border-radius:8px 8px 4px 4px;background:var(--mint);opacity:.85;animation:grow 1.2s cubic-bezier(.2,.8,.2,1) both;transform-origin:bottom}
@keyframes grow{from{transform:scaleY(0)}}

/* ========== BLOGS ========== */
.blog-hero{padding:clamp(40px,7vw,80px) 0 20px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chip{border:2px solid var(--line);background:var(--surface);border-radius:999px;padding:.45em 1.1em;font:500 .95rem var(--f-display);color:var(--ink-2);cursor:pointer;transition:.2s}
.chip:hover{border-color:var(--blue);color:var(--ink)}
.chip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.cork{background:var(--surface-2);border-radius:var(--r-l);padding:clamp(24px,4vw,50px);background-image:radial-gradient(color-mix(in srgb,var(--ink-3) 25%,transparent) 1px,transparent 1.5px);background-size:16px 16px}
.notes{columns:3 280px;column-gap:28px}
.note{break-inside:avoid;margin-bottom:34px;background:var(--surface);border-radius:6px;padding:22px 22px 18px;box-shadow:0 14px 26px -18px rgba(14,31,77,.6);position:relative;cursor:pointer;transition:transform .35s cubic-bezier(.2,.8,.2,1);transform:rotate(var(--rot,0deg));text-align:left;border:0;width:100%;font:inherit;color:inherit;display:block}
.note:hover{transform:rotate(0) translateY(-6px) scale(1.02)}
.note::before{content:"";position:absolute;top:-12px;left:50%;width:90px;height:24px;margin-left:-45px;background:color-mix(in srgb,var(--tape,var(--sun)) 60%,transparent);transform:rotate(-3deg);border-radius:2px}
.note .thumb{border-radius:4px;overflow:hidden;margin-bottom:16px;background:var(--tc,var(--sun-soft))}
.note .thumb svg{width:100%;height:auto}
.note .cat{font:600 .8rem var(--f-display);color:var(--ink-3)}
.note h3{font-size:1.35rem;margin:.25em 0 .4em}
.note p{font-size:.94rem;color:var(--ink-2);margin:0}
.note .read{display:inline-block;margin-top:14px;font:600 .9rem var(--f-display);color:var(--blue);border-bottom:2px solid currentColor}
.note.hide{display:none}
.reader{border:0;padding:0;background:transparent;max-width:min(760px,94vw);width:100%;max-height:90vh}
.reader::backdrop{background:rgba(6,12,36,.6);backdrop-filter:blur(4px)}
.reader-in{background:var(--surface);color:var(--ink);border-radius:var(--r-l);padding:clamp(24px,5vw,50px);position:relative;max-height:90vh;overflow:auto}
.reader[open] .reader-in{animation:viewIn .4s cubic-bezier(.2,.8,.2,1)}
.reader-in h2{font-size:clamp(1.8rem,4vw,2.6rem)}
.reader-in p{color:var(--ink-2)}
.reader-in .close{position:sticky;top:0;float:right;width:44px;height:44px;border-radius:50%;border:2px solid var(--line);background:var(--surface);cursor:pointer;color:var(--ink);font-size:1.4rem;line-height:1}

/* ========== CONTACT ========== */
.contact-hero{padding:clamp(40px,7vw,80px) 0 20px}
.contact-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:34px;align-items:start}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}
.postcard{background:var(--surface);border-radius:var(--r-m);padding:clamp(22px,4vw,40px);box-shadow:var(--shadow);position:relative;border:1px solid var(--line);background-image:repeating-linear-gradient(135deg,var(--coral) 0 14px,var(--surface) 14px 24px,var(--blue) 24px 38px,var(--surface) 38px 48px);background-size:100% 10px;background-repeat:no-repeat;background-position:top}
.stamp{position:absolute;right:24px;top:30px;width:84px;height:100px;background:var(--sun-soft);border:3px dashed var(--sun);border-radius:6px;display:grid;place-items:center;transform:rotate(6deg)}
.stamp img{width:52px}
.field{margin-bottom:18px}
.field label,.field .lab{display:block;font:600 .95rem var(--f-display);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:1rem;color:var(--ink);background:transparent;border:0;border-bottom:2px solid var(--line);padding:10px 2px;transition:border-color .2s;border-radius:0}
.field textarea{resize:vertical;min-height:90px}
.field select option{background:var(--surface);color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-bottom-color:var(--blue)}
.field .err{color:var(--coral);font-size:.85rem;display:none;margin-top:4px}
.field.bad .err{display:block}
.field.bad input{border-bottom-color:var(--coral)}
.class-chips{display:flex;flex-wrap:wrap;gap:8px}
.class-chips button{width:48px;height:48px;border-radius:14px;border:2px solid var(--line);background:var(--paper);font:600 1.1rem var(--f-display);color:var(--ink);cursor:pointer;transition:.2s}
.class-chips button.on{background:var(--blue);color:#fff;border-color:var(--blue);transform:translateY(-3px)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:560px){.two{grid-template-columns:1fr}}
.sent{display:none;text-align:center;padding:30px 10px}
.sent.show{display:block;animation:viewIn .5s}
.sent svg{width:120px;margin:0 auto 14px}
.info-card{background:var(--surface);border-radius:var(--r-m);padding:26px;border:1px solid var(--line);margin-bottom:18px}
.info-card h3{font-size:1.3rem}
.info-row{display:flex;gap:14px;align-items:flex-start;padding:12px 0;border-top:1px dashed var(--line)}
.info-row:first-of-type{border-top:0}
.info-row svg{width:26px;flex:none;color:var(--blue);margin-top:2px}
.info-row b{display:block;font-family:var(--f-display);font-weight:600}
.info-row a{text-decoration:none}
.map{border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line)}
.map .road{stroke:var(--surface);}
.map .land{fill:var(--surface-2)}
.map .water{fill:color-mix(in srgb,var(--sky) 35%,var(--surface-2))}
.pin{animation:drop 1s cubic-bezier(.5,1.6,.4,1) both,bob 3s 1s ease-in-out infinite;transform-box:fill-box;transform-origin:bottom}
@keyframes drop{from{transform:translateY(-60px);opacity:0}}

/* ========== FOOTER ========== */
.foot{background:var(--ink);color:#DCE4FF;padding:70px 0 calc(30px + env(safe-area-inset-bottom,0px));position:relative;overflow:hidden}
[data-mode="dark"] .foot{background:#060C24;color:var(--ink-2)}
.foot-top{display:flex;justify-content:space-between;align-items:end;gap:30px;flex-wrap:wrap;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:40px}
.foot .foot-big{font:700 clamp(2.6rem,8vw,6rem)/.95 var(--f-display);color:#fff;letter-spacing:-.03em;margin:0}
.foot .foot-big span{color:var(--sun)}
.foot-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:30px}
.foot h4{color:#fff;font-size:1.1rem;margin-bottom:14px}
.foot ul{list-style:none;padding:0;margin:0}
.foot li{margin-bottom:8px}
.foot a{color:#DCE4FF;text-decoration:none}
.foot a:hover{color:var(--sun)}
.foot .brand-word strong{color:#fff}
.foot .brand-word strong span{color:#6C95FF}
.foot p{color:#B9C4E6;font-size:.95rem}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:50px;font-size:.85rem;color:#8A97C2}
.foot-sun{position:absolute;right:-90px;top:-90px;width:300px;opacity:.12}
@media (max-width:820px){.foot-cols{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.foot-cols{grid-template-columns:1fr}}

.to-top{position:fixed;right:20px;bottom:calc(92px + env(safe-area-inset-bottom,0px));width:54px;height:54px;border-radius:50%;background:var(--sun);border:0;cursor:pointer;display:grid;place-items:center;box-shadow:var(--shadow);opacity:0;transform:translateY(20px);transition:.3s;z-index:40;color:#3B2600}
.to-top.show{opacity:1;transform:none}
.to-top svg{width:22px}
/* whatsapp chat button */
.wa-float{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:45;display:flex;align-items:center;text-decoration:none;
  height:58px;border-radius:999px;background:#25D366;color:#fff;box-shadow:0 14px 30px -12px rgba(18,140,74,.7);
  animation:waIn .6s cubic-bezier(.5,1.6,.4,1) .8s both;transition:transform .3s cubic-bezier(.5,1.6,.4,1),box-shadow .3s}
.wa-ic{width:58px;height:58px;display:grid;place-items:center;flex:none;position:relative}
.wa-ic svg{width:30px;height:30px;transition:transform .4s cubic-bezier(.5,1.6,.4,1)}
.wa-ic::before{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid #25D366;animation:waPulse 2.4s ease-out 2s infinite;pointer-events:none}
.wa-label{font-family:var(--f-display);font-weight:600;font-size:1.02rem;white-space:nowrap;max-width:0;opacity:0;overflow:hidden;padding-left:0;
  transition:max-width .4s cubic-bezier(.2,.8,.2,1),opacity .25s,padding .4s}
.wa-float:hover,.wa-float:focus-visible{transform:translateY(-3px);box-shadow:0 18px 34px -12px rgba(18,140,74,.8)}
.wa-float:hover .wa-label,.wa-float:focus-visible .wa-label{max-width:140px;opacity:1;padding-left:22px}
.wa-float:hover .wa-ic svg{transform:rotate(-12deg) scale(1.08)}
@keyframes waIn{from{opacity:0;transform:scale(.4) translateY(20px)}to{opacity:1;transform:none}}
@keyframes waPulse{0%{transform:scale(1);opacity:.8}70%,100%{transform:scale(1.6);opacity:0}}
@media print{.wa-float{display:none}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none}
}
@media (max-width:820px){.sunband .wrap{grid-template-columns:1fr}.bigsun{width:120px}}

/* ---------- play & learn games ---------- */
.play-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
@media (max-width:1000px){.play-grid{grid-template-columns:1fr 1fr}.play-grid #gMem{grid-column:1/-1;max-width:520px;width:100%;justify-self:center}}
@media (max-width:660px){.play-grid{grid-template-columns:1fr}}
.pl-card{--c:var(--blue);position:relative;overflow:hidden;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:24px 22px 20px;box-shadow:var(--shadow)}
.pl-card::before{content:"";position:absolute;inset:0 0 auto;height:6px;background:var(--c)}
.pl-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.pl-top h3{font-size:1.3rem;margin:0}
.pl-top small{color:var(--ink-3);font-size:.82rem}
.pl-ic{width:48px;height:48px;flex:none;border-radius:14px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 18%,transparent);transition:transform .4s cubic-bezier(.5,1.6,.4,1)}
.pl-card:hover .pl-ic{transform:rotate(-10deg) scale(1.06)}
.pl-ic svg{width:30px;height:30px}
.pl-score{margin-left:auto;white-space:nowrap;font:500 .9rem var(--f-display);padding:.35em .8em;border-radius:999px;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--ink)}
.pl-score b{display:inline-block}
.pl-score b.bump{animation:pop .35s cubic-bezier(.5,1.6,.4,1)}
.pl-q{display:grid;place-items:center;min-height:118px;margin-bottom:14px;padding:14px;border-radius:var(--r-m);background:var(--paper);border:2px dashed var(--line);
  font:700 clamp(2.1rem,5vw,2.7rem) var(--f-display);color:var(--ink);letter-spacing:.02em;text-align:center}
.pl-q .in{animation:plIn .4s cubic-bezier(.2,.9,.3,1.2)}
@keyframes plIn{from{opacity:0;transform:translateY(10px) scale(.95)}}
.pl-wordq{gap:2px}
.pl-emoji{font-size:2.4rem;line-height:1}
.pl-word{letter-spacing:.12em}
.pl-word i{display:inline-block;min-width:.8em;font-style:normal;color:var(--c);border-bottom:4px solid var(--c);line-height:1;margin:0 .04em}
.pl-word i.fill{animation:pop .35s cubic-bezier(.5,1.6,.4,1);color:var(--mint);border-color:var(--mint)}
.pl-q .pl-op{color:var(--c)}
.pl-q .pl-ans{display:inline-block;min-width:1.3em;color:var(--c);border-bottom:4px solid var(--c)}
.pl-q .pl-ans.fill{color:var(--mint);border-color:var(--mint);animation:pop .35s cubic-bezier(.5,1.6,.4,1)}
.pl-opts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.pl-opts button{height:64px;border-radius:16px;border:2px solid var(--line);background:var(--surface);color:var(--ink);font:700 1.6rem var(--f-display);cursor:pointer;
  box-shadow:0 4px 0 0 var(--line);transition:transform .25s cubic-bezier(.5,1.6,.4,1),border-color .2s,background .2s,box-shadow .2s}
.pl-opts button:hover:not(:disabled){transform:translateY(-3px);border-color:var(--c);box-shadow:0 6px 0 0 color-mix(in srgb,var(--c) 50%,var(--line))}
.pl-opts button:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 0 var(--line)}
.pl-opts button:focus-visible{outline:3px solid var(--c);outline-offset:2px}
.pl-opts button.right{background:var(--mint-soft);border-color:var(--mint);box-shadow:0 4px 0 0 var(--mint);animation:pop .35s cubic-bezier(.5,1.6,.4,1)}
.pl-opts button.wrong{background:var(--coral-soft);border-color:var(--coral);animation:shake .4s}
.pl-opts button:disabled{cursor:default}
.pl-msg{min-height:1.5em;margin:12px 0 0;text-align:center;font:500 1rem var(--f-display);color:var(--ink-2);transition:color .2s}
.pl-msg.good{color:color-mix(in srgb,var(--mint) 75%,var(--ink))}
.pl-msg.bad{color:var(--coral)}
.pl-mem{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;perspective:700px}
.pl-mem button{aspect-ratio:1;border:0;padding:0;background:transparent;cursor:pointer;position:relative;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,1.4,.5,1);border-radius:12px}
.pl-mem button:focus-visible{outline:3px solid var(--c);outline-offset:2px}
.pl-mem button:hover:not(.flip):not(.done){transform:translateY(-3px) rotate(-2deg)}
.pl-mem button.flip,.pl-mem button.done{transform:rotateY(180deg)}
.pl-mem .fr,.pl-mem .bk{position:absolute;inset:0;border-radius:12px;display:grid;place-items:center;-webkit-backface-visibility:hidden;backface-visibility:hidden}
.pl-mem .fr{background:linear-gradient(135deg,var(--mint),color-mix(in srgb,var(--mint) 55%,var(--blue)));color:#fff;font:700 1.5rem var(--f-display);box-shadow:inset 0 -4px 0 rgba(0,0,0,.12)}
.pl-mem .fr svg{width:42%;height:42%;opacity:.9}
.pl-mem .bk{transform:rotateY(180deg);background:var(--paper);border:2px solid var(--line)}
.pl-mem .bk svg{width:62%;height:62%}
.pl-mem button.done .bk{background:var(--mint-soft);border-color:var(--mint);animation:plMatch .5s cubic-bezier(.5,1.6,.4,1)}
@keyframes plMatch{50%{transform:rotateY(180deg) scale(1.1)}}
.pl-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:12px}
.pl-foot .pl-msg{margin:0;text-align:left}
.pl-reset{flex:none;border:2px solid var(--line);background:transparent;color:var(--ink);font:600 .9rem var(--f-display);padding:.45em 1em;border-radius:999px;cursor:pointer;transition:border-color .2s,transform .2s}
.pl-reset:hover{border-color:var(--c);transform:translateY(-2px)}
.pl-burst{position:absolute;width:9px;height:9px;border-radius:2px;pointer-events:none;z-index:2;animation:plBurst .9s cubic-bezier(.2,.8,.3,1) forwards}
@keyframes plBurst{to{transform:translate(var(--dx),var(--dy)) rotate(var(--r));opacity:0}}