:root{
  --ink:#1B2559; --ink-2:#36407A; --sky:#EEF5FF; --sky-2:#D9E8FF; --sun:#FFC93C; --sun-2:#FFE59A;
  --mint:#2FCB8A; --mint-2:#D3F6E6; --coral:#FF6B5B; --coral-2:#FFE1DD; --grape:#7B5CFA; --grape-2:#E9E3FF;
  --white:#fff; --line:#CFDDF4; --muted:#5D6893;
  --display:"Fredoka", "Trebuchet MS", system-ui, sans-serif;
  --ui:"Lexend", system-ui, -apple-system, "Segoe UI", sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
:root,
html[data-theme="dark"],
html[data-theme="auto"] {
    color-scheme: only light !important;
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: only light !important;
    }
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:env(safe-area-inset-top,0px);scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--sky);color:var(--ink);font:400 16px/1.6 var(--ui)}
img{max-width:100%}
a{color:var(--grape)}
:focus-visible{outline:3px solid var(--grape);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.1;margin:0 0 .45em;color:var(--ink)}
h1{font-size:clamp(2.4rem,6.4vw,4.4rem);letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,4vw,2.7rem)}
h3{font-size:1.35rem}
h4{font-size:1.08rem}
p{margin:0 0 1em;max-width:68ch}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.sec{padding:72px 0}
.sec.tight{padding:44px 0}
.white{background:var(--white)}
.inkbg{background:var(--ink);color:#E6ECFF}.inkbg h2,.inkbg h3{color:#fff}
.lead{font-size:1.15rem;color:var(--ink-2)}
.muted{color:var(--muted)}
.small{font-size:.88rem}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.between{justify-content:space-between}
.stack>*+*{margin-top:12px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 1rem var(--ui);padding:14px 26px;border-radius:999px;border:2px solid var(--ink);background:var(--sun);color:var(--ink);text-decoration:none;cursor:pointer;box-shadow:0 4px 0 var(--ink);transition:transform .08s,box-shadow .08s}
.btn:hover{transform:translateY(-1px);box-shadow:0 5px 0 var(--ink)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.btn.alt{background:var(--white)}
.btn.ink{background:var(--ink);color:#fff;box-shadow:0 4px 0 var(--grape)}
.btn.sm{padding:9px 16px;font-size:.9rem;box-shadow:0 3px 0 var(--ink)}
.btn.ghost{background:none;border-color:transparent;box-shadow:none;text-decoration:underline;padding:8px 6px}
.btn.danger{background:var(--coral-2);border-color:var(--coral);box-shadow:0 3px 0 var(--coral);color:#8B1E12}
.btn.block{width:100%}

/* header */
.top{position:sticky;top:0;z-index:40;background:rgba(238,245,255,.94);backdrop-filter:blur(8px);border-bottom:2px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:18px;height:70px}
.logo{display:flex;align-items:center;gap:8px;font:700 1.6rem var(--display);color:var(--ink);text-decoration:none}
.logo svg{flex:none}
.nav{display:flex;gap:4px;margin-left:12px}
.nav a,.nav button{font:500 .95rem var(--ui);color:var(--ink);text-decoration:none;padding:8px 12px;border-radius:10px;background:none;border:0;cursor:pointer}
.nav a:hover,.nav button:hover,.nav a.on{background:var(--sky-2)}
.dd{position:relative}
.ddm{display:none;position:absolute;top:100%;left:0;background:#fff;border:2px solid var(--ink);border-radius:16px;padding:10px;min-width:280px;box-shadow:0 8px 0 var(--sky-2)}
.dd:hover .ddm,.dd:focus-within .ddm{display:block}
.ddm a{display:block}
.top .act{margin-left:auto;display:flex;gap:10px;align-items:center}
.nav a,.nav button,.btn{white-space:nowrap}
@media (max-width:1240px){.lang{display:none}.nav a,.nav button{padding:8px 9px}}
.burger{display:none;margin-left:auto;background:none;border:2px solid var(--ink);border-radius:10px;padding:8px 10px;cursor:pointer;font:600 .9rem var(--ui)}
.mnav{display:none}
@media (max-width:1020px){.nav,.top .act{display:none}.burger{display:block}
  .mnav.open{display:block;background:#fff;border-bottom:2px solid var(--line);padding:12px 20px 20px}
  .mnav a{display:block;padding:10px 0;color:var(--ink);text-decoration:none;font-weight:500;border-bottom:1px solid var(--sky-2)}}
.lang{font:500 .85rem var(--ui);border:2px solid var(--line);background:#fff;border-radius:10px;padding:6px 8px;color:var(--ink)}

/* speech bubble — the signature element */
.bub{position:relative;display:inline-block;background:#fff;border:2px solid var(--ink);border-radius:22px;padding:12px 18px;font:600 1.05rem var(--display);color:var(--ink)}
.bub::after{content:"";position:absolute;left:26px;bottom:-12px;width:20px;height:20px;background:inherit;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:skewX(-25deg) rotate(45deg) scaleY(.7)}
.bub.r::after{left:auto;right:26px;transform:skewX(25deg) rotate(45deg) scaleY(.7)}
.bub.sun{background:var(--sun)}.bub.mint{background:var(--mint-2)}.bub.grape{background:var(--grape-2)}.bub.coral{background:var(--coral-2)}

/* hero */
.hero{padding:56px 0 80px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.chat{position:relative;min-height:440px}
.chat .bub{position:absolute;max-width:240px;animation:pop .5s cubic-bezier(.3,1.6,.5,1) both}
@keyframes pop{from{opacity:0;transform:scale(.6) translateY(10px)}}
.screen{position:absolute;inset:60px 30px 50px 50px;background:var(--ink);border-radius:26px;border:4px solid var(--ink);box-shadow:12px 12px 0 var(--sun);overflow:hidden;display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:6px}
.screen .cam{border-radius:18px;display:grid;place-items:center;font:600 3.4rem var(--display);color:#fff}
.screen .board{grid-column:1/-1;background:#fff;border-radius:18px;display:flex;align-items:center;justify-content:center;gap:14px;font:600 1.4rem var(--display);color:var(--ink);padding:12px}
@media (max-width:540px){.chat{min-height:360px}.screen{inset:50px 6px 40px 16px}.chat .bub{font-size:.88rem;max-width:180px}}

/* quick quiz card */
.qcard{background:#fff;border:2px solid var(--ink);border-radius:24px;padding:24px;box-shadow:0 8px 0 var(--ink);max-width:520px}
.ages{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 16px}
.chip{font:600 .95rem var(--ui);border:2px solid var(--line);background:#fff;color:var(--ink);border-radius:999px;padding:8px 14px;cursor:pointer}
.chip.on,.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
label.f{display:block;font-weight:500;margin:0 0 6px;font-size:.92rem}
.in,select.in,textarea.in{width:100%;font:400 1rem var(--ui);padding:12px 14px;border:2px solid var(--line);border-radius:14px;background:#fff;color:var(--ink)}
.in:focus{border-color:var(--grape);outline:none}
.field{margin-bottom:14px}

/* cards */
.card{background:#fff;border:2px solid var(--line);border-radius:20px;padding:22px}
.card.bold{border-color:var(--ink);box-shadow:0 6px 0 var(--ink)}
.card h3{margin-top:0}
.tag{display:inline-block;font:600 .78rem var(--ui);padding:4px 10px;border-radius:999px;background:var(--sky-2);color:var(--ink)}
.tag.sun{background:var(--sun-2)}.tag.mint{background:var(--mint-2);color:#0C6B44}.tag.coral{background:var(--coral-2);color:#8B1E12}.tag.grape{background:var(--grape-2);color:#3E2A9E}
.ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:1.6rem;margin-bottom:12px;border:2px solid var(--ink)}
.ticks{list-style:none;padding:0;margin:0}
.ticks li{padding-left:30px;position:relative;margin:8px 0}
.ticks li::before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--mint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' stroke='white' stroke-width='2.2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") center/14px no-repeat}

/* steps (real sequence) */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px}
.step{counter-increment:s;background:#fff;border:2px solid var(--line);border-radius:20px;padding:22px 22px 22px}
.step::before{content:counter(s);display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--sun);border:2px solid var(--ink);font:700 1.2rem var(--display);margin-bottom:12px}

/* pricing */
.cfg{display:grid;grid-template-columns:1.3fr .9fr;gap:28px;align-items:start}
@media (max-width:900px){.cfg{grid-template-columns:1fr}}
.seg{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.opt{flex:1 1 120px;border:2px solid var(--line);background:#fff;border-radius:16px;padding:14px;cursor:pointer;text-align:left;font:400 .95rem var(--ui);color:var(--ink)}
.opt b{display:block;font:600 1.1rem var(--display)}
.opt.on{border-color:var(--ink);background:var(--sun-2);box-shadow:0 4px 0 var(--ink)}
.sum{position:sticky;top:90px;background:#fff;border:2px solid var(--ink);border-radius:24px;padding:24px;box-shadow:0 8px 0 var(--grape)}
.sum .big{font:700 3rem var(--display);line-height:1}
.line{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:.95rem}
.addon{display:flex;gap:14px;align-items:flex-start;border:2px solid var(--line);border-radius:16px;padding:14px;background:#fff;cursor:pointer;margin-bottom:10px}
.addon.on{border-color:var(--mint);background:var(--mint-2)}
.addon input{margin-top:5px;width:20px;height:20px;accent-color:var(--mint)}
.addon .p{margin-left:auto;font-weight:600;white-space:nowrap}
table.cmp{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}
table.cmp th,table.cmp td{padding:12px 14px;border-bottom:1px solid var(--sky-2);text-align:left;font-size:.95rem}
table.cmp th{background:var(--ink);color:#fff;font-weight:500}
.scroll{overflow-x:auto}

/* teacher */
.tch{background:#fff;border:2px solid var(--line);border-radius:20px;overflow:hidden}
.tch .ph{height:170px;display:grid;place-items:center;font:600 3.6rem var(--display);color:var(--ink)}
.tch .b{padding:16px}
.av{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font:600 1.1rem var(--display);border:2px solid var(--ink);flex:none}

/* faq */
details.q{background:#fff;border:2px solid var(--line);border-radius:16px;padding:0 20px;margin-bottom:10px}
details.q summary{cursor:pointer;font:600 1.08rem var(--display);padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
details.q summary::after{content:"+";font-size:1.4rem;line-height:1}
details.q[open] summary::after{content:"–"}
details.q[open]{border-color:var(--ink)}

/* reviews */
.rev{background:#fff;border:2px solid var(--line);border-radius:22px;padding:20px}
.stars{color:#E5A500;letter-spacing:2px}

/* footer */
footer{background:var(--ink);color:#C9D3F5;padding:60px 0 30px;margin-top:0}
footer a{color:#E6ECFF;text-decoration:none;display:block;padding:4px 0;font-size:.93rem}
footer a:hover{text-decoration:underline}
footer h4{color:#fff;font-size:1rem}
.fgrid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}
@media (max-width:900px){.fgrid{grid-template-columns:1fr 1fr}}

/* app shell (parent account / student) */
.app{display:grid;grid-template-columns:250px 1fr;min-height:calc(100vh - 70px)}
.side{background:#fff;border-right:2px solid var(--line);padding:22px 14px}
.side a{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:12px;color:var(--ink);text-decoration:none;font-weight:500;margin-bottom:2px}
.side a.on,.side a:hover{background:var(--sky-2)}
.side .kid{display:flex;gap:10px;align-items:center;padding:10px;border:2px solid var(--line);border-radius:14px;margin-bottom:16px}
.main{padding:28px 28px 60px;min-width:0}
@media (max-width:860px){.app{grid-template-columns:1fr}.side{display:flex;overflow-x:auto;gap:4px;padding:10px;border-right:0;border-bottom:2px solid var(--line)}.side a{white-space:nowrap}.side .kid,.side h4{display:none}.main{padding:20px 16px 50px}}
.stat{background:#fff;border:2px solid var(--line);border-radius:18px;padding:18px}
.stat b{display:block;font:700 2rem var(--display)}
.bar{height:12px;background:var(--sky-2);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--mint);border-radius:99px}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal .d{background:#fff;border:2px solid var(--line);border-radius:12px;min-height:84px;padding:6px;font-size:.78rem}
.cal .d .n{font-weight:600}
.cal .ev{display:block;margin-top:4px;border-radius:8px;padding:3px 5px;background:var(--sun-2);font-size:.72rem;line-height:1.25}
.cal .ev.g{background:var(--grape-2)}
.slot{border:2px solid var(--line);background:#fff;border-radius:12px;padding:10px;font:500 .9rem var(--ui);cursor:pointer;color:var(--ink)}
.slot.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.slot:disabled{opacity:.35;cursor:not-allowed;text-decoration:line-through}

/* student world */
.world{background:linear-gradient(180deg,#5B8CFF 0%,#8FB3FF 55%,#BFE8B0 55%,#9ED98A 100%);min-height:calc(100vh - 70px);padding:24px}
.world .panel{background:rgba(255,255,255,.95);border:3px solid var(--ink);border-radius:24px;padding:20px}
.isle{background:#fff;border:3px solid var(--ink);border-radius:26px;padding:18px;text-align:center;box-shadow:0 6px 0 var(--ink);cursor:pointer}
.isle .e{font-size:2.6rem}
.aitutor{max-height:300px;overflow:auto;display:flex;flex-direction:column;gap:14px;padding:6px 6px 14px}

/* quiz flow */
.flow{max-width:640px;margin:0 auto}
.prog{display:flex;gap:6px;margin-bottom:26px}
.prog i{flex:1;height:8px;border-radius:99px;background:var(--sky-2)}
.prog i.on{background:var(--grape)}
.big-opt{display:block;width:100%;text-align:left;margin-bottom:10px}

/* misc */
.dev{display:block;background:#FFF6C2;border:2px dashed #C9A100;border-radius:12px;padding:10px 14px;font-size:.84rem;color:#5A4600;margin:14px 0}
.dev::before{content:"Dev: ";font-weight:600}
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.banner{background:var(--sun);border-bottom:2px solid var(--ink);text-align:center;padding:9px 16px;font-weight:500;font-size:.92rem}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 20px;border-radius:999px;z-index:90;font-weight:500;display:none}
.toast.show{display:block;animation:pop .3s both}
.modal{position:fixed;inset:0;background:rgba(27,37,89,.55);display:none;place-items:center;z-index:80;padding:16px}
.modal.show{display:grid}
.modal .box{background:#fff;border:2px solid var(--ink);border-radius:24px;padding:26px;max-width:520px;width:100%;max-height:90vh;overflow:auto}
.cookie{position:fixed;left:16px;right:16px;bottom:16px;max-width:560px;background:#fff;border:2px solid var(--ink);border-radius:20px;padding:18px;z-index:70;box-shadow:0 6px 0 var(--ink)}
.prose{max-width:72ch}.prose h2{margin-top:1.4em;font-size:1.6rem}
.blogimg{height:180px;border-radius:16px;display:grid;place-items:center;font-size:3.6rem;margin-bottom:14px;border:2px solid var(--ink)}
.sitemap a{display:block;padding:6px 0}