/* Twirbo night-sky look: shared by /start/, /grownups/, /lab/ and the Junior world picker.
   Page globals live under body.tw so Junior's game screens keep their own styles. */
:root{
  --night:#0a1230;--night2:#16245a;--cream:#f3eee2;--paper-t:#fffaf0;--ink-t:#131b2d;--muted-t:#4c5366;
  --blue:#3d63c4;--blue-d:#2f4f9e;--blue-s:#243d7a;--sun:#eab766;--mint:#9fd8b0;--pink:#ffb4c8;--lav:#c9b8ff;--sky:#b6d3ff;
  --tw-ui:'Baloo 2',system-ui,sans-serif;--tw-serif:'Fraunces',Georgia,serif;
}
html:has(body.tw){overflow-x:clip;scroll-behavior:smooth}
body.tw{margin:0;background:var(--cream);color:var(--ink-t);font:500 18px/1.5 var(--tw-ui);overflow-x:clip;-webkit-font-smoothing:antialiased}
body.tw *{box-sizing:border-box}
body.tw a{color:inherit}
.tw-wrap{max-width:1160px;margin:0 auto;padding:0 28px}
@media(max-width:520px){.tw-wrap{padding:0 18px}}

/* ---------- nav ---------- */
.nav{position:relative;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:18px;padding-bottom:18px}
.brandmark{display:flex;align-items:center;gap:9px;text-decoration:none;color:#fff3d6!important;font:800 26px/1 var(--tw-ui);letter-spacing:.01em}
.brandmark svg{width:34px;height:34px;flex:none}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a:not(.pill){color:#dfe6ff;text-decoration:none;font-weight:600;font-size:16px;padding:8px 12px;border-radius:999px}
.nav-links a:not(.pill):hover,.nav-links a[aria-current]{background:rgba(255,255,255,.1);color:#fff}
@media(max-width:760px){.nav-links a.hide-m{display:none}}

/* ---------- pills + chips ---------- */
.pill{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:10px 24px;border-radius:999px;
  font:700 18px/1 var(--tw-ui);text-decoration:none;cursor:pointer;color:#fff!important;background:var(--blue);
  border:2.5px solid var(--ink-t);box-shadow:0 5px 0 var(--ink-t);transition:transform .12s,box-shadow .12s;white-space:nowrap}
.pill:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--ink-t)}
.pill:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink-t)}
.pill.sm{min-height:42px;padding:8px 18px;font-size:16px;box-shadow:0 4px 0 var(--ink-t)}
.pill.light{background:var(--paper-t);color:var(--ink-t)!important}
.pill.ghost{background:transparent;color:#fff3d6!important;border-color:#fff3d6;box-shadow:0 5px 0 rgba(255,243,214,.35)}
.pill .arr{transition:transform .15s}.pill:hover .arr{transform:translateX(3px)}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;list-style:none;margin:0;padding:0}
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 13px 5px;border-radius:12px;font:700 15px/1.1 var(--tw-ui);
  background:var(--paper-t);color:var(--ink-t);border:2px solid var(--ink-t);box-shadow:0 3px 0 var(--ink-t);text-decoration:none}
.chip svg{width:18px;height:18px;flex:none}
.hero .chip{background:rgba(255,255,255,.08);color:#fff3d6;border-color:rgba(255,243,214,.55);box-shadow:none}
a.chip:hover{transform:translateY(-1px)}
.eyebrow{display:inline-block;font:700 13px/1 var(--tw-ui);letter-spacing:.06em;text-transform:uppercase;color:var(--muted-t)}
.age{display:inline-block;font:600 15px/1.2 var(--tw-ui);background:var(--paper-t);border:2px solid var(--ink-t);border-radius:999px;padding:5px 13px 4px;color:var(--ink-t)}

/* ---------- hero (full on /start/, short banner elsewhere) ---------- */
.hero{position:relative;background:radial-gradient(120% 80% at 50% 0%,var(--night2) 0%,var(--night) 62%);color:#fff3d6;overflow:hidden;isolation:isolate}
.sky{position:absolute;inset:0;z-index:-1;pointer-events:none}
.sky i{position:absolute;width:var(--s);height:var(--s);border-radius:50%;background:#fff;opacity:.8;
  animation:tw-drift var(--d) linear infinite,tw-twinkle var(--t) ease-in-out infinite;animation-delay:var(--dl),var(--dl)}
.sky b{position:absolute;color:var(--c);font-size:var(--s);line-height:1;animation:tw-twinkle var(--t) ease-in-out infinite,tw-drift var(--d) linear infinite;animation-delay:var(--dl),var(--dl)}
@keyframes tw-drift{from{transform:translate3d(0,0,0)}to{transform:translate3d(-40px,24px,0)}}
@keyframes tw-twinkle{0%,100%{opacity:.9}50%{opacity:.25}}
.hero-in{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;padding-bottom:96px}
.wordmark{--n:6;--fs:min(calc(140vw / var(--n)),calc(1700px / var(--n)),20vh);margin:22px 0 0;font:800 var(--fs)/.78 var(--tw-ui);letter-spacing:-.015em;color:#fff3d6;
  text-shadow:0 2px 0 var(--blue),0 4px 0 var(--blue),0 6px 0 var(--blue),0 8px 0 var(--blue-d),0 10px 0 var(--blue-d),0 12px 0 var(--blue-s),0 14px 0 var(--blue-s),0 16px 0 #021a4a,0 28px 40px rgba(0,0,0,.45);
  white-space:nowrap;padding-top:.08em;user-select:none}
.bot-wrap{position:relative;width:min(760px,100%,calc(36vh * 16 / 9));aspect-ratio:16/9;margin-top:calc(-.3 * var(--fs))}
.bot-wrap canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.lede{max-width:36ch;margin:4px auto 0;font-size:clamp(19px,2vw,22px);line-height:1.45;color:#dfe6ff}
.ctas{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:24px}
.hero-edge{position:absolute;left:0;right:0;bottom:-1px;width:100%;height:56px;display:block}
.hero-edge path{fill:var(--below,var(--cream))}
/* short banner: nav, a small chunky title, one line */
.hero.banner .hero-in{padding:6px 0 76px}
.hero.banner .wordmark{--fs:clamp(46px,8vw,96px);margin:0;text-shadow:0 2px 0 var(--blue),0 4px 0 var(--blue-d),0 6px 0 var(--blue-s),0 8px 0 #021a4a,0 16px 24px rgba(0,0,0,.4)}
.hero.banner .lede{max-width:52ch;margin-top:16px}

/* ---------- example program strip ---------- */
.code-chips{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:18px}
.code-chip{font:700 16px/1 var(--tw-ui);color:#fff;border-radius:12px;padding:10px 14px 9px;border:2px solid #021a4a;white-space:nowrap}
.code-chip.b1{background:var(--blue);box-shadow:0 4px 0 var(--blue-s)}.code-chip.b2{background:#7d70bf;box-shadow:0 4px 0 #3a1e86}.code-chip.b3{background:var(--sun);color:var(--ink-t);box-shadow:0 4px 0 #7e5400}
.code-chips .sep{color:#8d9ad0;font-weight:800}

/* ---------- sections ---------- */
.sec{position:relative;padding:80px 0}
.h2{font:600 clamp(40px,6vw,80px)/.98 var(--tw-serif);letter-spacing:-.025em;margin:0;font-variation-settings:"SOFT" 100,"WONK" 1}
.h3{font:600 clamp(30px,4vw,50px)/1 var(--tw-serif);letter-spacing:-.02em;margin:0;font-variation-settings:"SOFT" 100}
.h4{font:600 26px/1.1 var(--tw-serif);margin:0;letter-spacing:-.01em}
.dot{color:var(--blue);font-style:normal}
.dot.sun{color:#d29a45}.dot.pink{color:#d98a9e}.dot.mint{color:#18b85a}.dot.lav{color:#7d70bf}
.sub{font-size:clamp(19px,1.8vw,22px);color:var(--muted-t);max-width:44ch;margin:18px 0 0}
.center{text-align:center}.center .sub{margin-left:auto;margin-right:auto}
.dark{background:var(--night);color:#fff3d6;overflow:hidden;isolation:isolate}
.dark .sub{color:#c9d3f5}.dark .dot{color:var(--mint)}.dark .eyebrow{color:#9aa6cf}

/* ---------- winding path ---------- */
.journey{position:relative}
.journey>.road-svg{position:absolute;left:0;top:0;width:100%;z-index:0;pointer-events:none;overflow:visible}
.journey>*:not(.road-svg){position:relative;z-index:1}

/* ---------- floating islands ---------- */
.island{--edge:#6f9c3a;--rock:#a8714a;--rock2:#7c4f31;display:block;text-decoration:none;color:var(--ink-t);width:min(330px,100%);margin:0 auto}
.isl{position:relative;animation:tw-bob 5s ease-in-out infinite;animation-delay:var(--bd,0s)}
@keyframes tw-bob{50%{transform:translateY(-10px)}}
.isl-top{position:relative;z-index:2;aspect-ratio:2/1;border-radius:50%;border:4px solid var(--ink-t);background:var(--edge);overflow:hidden;
  box-shadow:0 14px 0 0 var(--edge),0 14px 0 4px var(--ink-t),inset 0 -10px 0 rgba(0,0,0,.08);transition:transform .15s}
.isl-top img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:50%;display:block}
.isl-rock{display:block;width:62%;margin:-2px auto 0;height:auto;position:relative;z-index:1}
.isl .badge{position:absolute;z-index:3;top:-14px;right:6%;transform:rotate(4deg)}
a.island:hover .isl-top,a.island:focus-visible .isl-top{transform:translateY(-4px)}
.isl-shadow{width:46%;height:14px;margin:12px auto 0;border-radius:50%;background:rgba(19,27,45,.13);animation:tw-shad 5s ease-in-out infinite;animation-delay:var(--bd,0s)}
@keyframes tw-shad{50%{transform:scaleX(.82);opacity:.7}}
.isl-copy{text-align:center;background:var(--cream);border-radius:26px;padding:10px 18px 8px;width:max-content;max-width:100%;margin:10px auto 0}
.isl-copy .h4{font-size:30px;color:var(--ink-t)}
.isl-copy p{margin:6px auto 0;color:var(--muted-t);max-width:30ch}
.starbar{display:inline-flex;align-items:center;gap:8px;margin-top:10px;font:700 15px var(--tw-ui);color:var(--muted-t)}
.starbar svg{width:20px;height:20px}
.starbar s{display:block;width:90px;height:10px;border-radius:9px;background:#e2dccd;border:2px solid var(--ink-t);overflow:hidden;text-decoration:none}
.starbar s i{display:block;height:100%;background:var(--sun)}
.isl-copy .pill{margin-top:12px}

/* ---------- cards ---------- */
.tcard{background:var(--paper-t);border:2.5px solid var(--ink-t);border-radius:28px;box-shadow:0 7px 0 var(--ink-t);padding:28px}
.tcard .h3{margin-top:10px}
.tcard>p{color:var(--muted-t);margin:10px 0 0}
ul.ticks{list-style:none;padding:0;margin:14px 0 0}
ul.ticks li{position:relative;padding-left:30px;margin:7px 0;line-height:1.4}
ul.ticks li::before{content:"";position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:6px;background:var(--mint);border:2px solid var(--ink-t)}
ul.ticks li::after{content:"";position:absolute;left:6px;top:6px;width:5px;height:9px;border:solid var(--ink-t);border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.stepn{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;font:800 22px/1 var(--tw-ui);border:2.5px solid var(--ink-t);box-shadow:0 3px 0 var(--ink-t);flex:none}
.stop-head{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:10px 0}
.stop-head .bubble{background:var(--cream);padding:14px 26px;border-radius:30px}
.tstop{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:40px 0 70px}
.tstop>*{min-width:0}
.tstop.flip>.island{order:2}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.box{margin-top:22px;padding:18px 20px;border-radius:22px;border:2.5px dashed var(--ink-t);background:#fff6e2}
.box b{font:600 22px/1.2 var(--tw-serif)}.box p{margin:6px 0 0;font-size:17px}
@media(max-width:860px){.tstop{grid-template-columns:1fr;gap:20px;padding:30px 0 50px}.tstop.flip>.island{order:0}}

/* ---------- coding levels ladder ---------- */
.ladder{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:30px 0 0;padding:0;list-style:none}
.rung{display:flex;align-items:center;gap:10px;min-height:48px;padding:6px 18px 6px 8px;border-radius:999px;background:var(--paper-t);border:2.5px solid var(--ink-t);font:700 17px/1 var(--tw-ui);box-shadow:0 4px 0 var(--ink-t);text-decoration:none;color:var(--ink-t)}
.rung b{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--sky);border:2px solid var(--ink-t);font-size:16px}
.rung small{font:600 13px var(--tw-ui);color:var(--muted-t)}
.rung.got{background:var(--blue);color:#fff}.rung.got b{background:#fff;color:var(--blue)}.rung.got small{color:#dfe6ff}
.rung.next{background:#fff3d6;border-color:var(--ink-t);box-shadow:0 4px 0 #7e5400}
a.rung:hover{transform:translateY(-2px)}

/* ---------- footer (footer.js fills it) ---------- */
#site-footer.foot{max-width:none;margin:0;border:0;background:var(--night);color:#c9d3f5;padding:60px 0 40px;font:500 15px/1.5 var(--tw-ui)}
.foot>*{max-width:1160px;margin-left:auto!important;margin-right:auto!important;padding-left:28px;padding-right:28px}
.foot .bigmark{font:800 clamp(64px,13vw,170px)/.8 var(--tw-ui);color:#fff3d6;letter-spacing:-.015em;text-shadow:0 6px 0 var(--blue),0 10px 0 var(--blue-s);margin-bottom:34px;user-select:none}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 22px;font-weight:600;margin-bottom:12px}
.foot nav a,.foot a{color:#fff3d6}
.foot p{color:#9aa6cf;margin-top:10px}
.foot .site-links{font-size:17px}
.foot .analytics-choice,.foot .analytics-choice .check-label{color:#c9d3f5}
.foot .feedback-panel summary{color:#fff3d6}
.foot .feedback-panel label{color:#dfe6ff}
.foot .feedback-panel p{color:#c9d3f5}
@media(max-width:520px){.foot>*{padding-left:18px;padding-right:18px}}

@media (prefers-reduced-motion:reduce){.sky i,.sky b,.isl,.isl-shadow{animation:none!important}.pill,.isl-top{transition:none}html{scroll-behavior:auto}}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* calmer world art (Ravi: some colours too bright) */
.island{filter:saturate(.78) brightness(.97)}