/* Layout: one long page that reads like a learning path. Navy "breadboard" panels for the hero and trial,
   cool paper panels for reading. Left-aligned throughout. The circuit trace connecting the levels is the one bold element. */
:root{
  --navy:#1B1F3C;        /* brand navy, from the logo */
  --navy-2:#262B52;      /* raised panel on navy */
  --ink-blue:#30426D;    /* the 0 1 eyes in the white logo */
  --orange:#EE6A2A;      /* brand orange */
  --orange-ink:#C24E16;  /* orange for small text on light grounds */
  --green:#43872D;       /* approved complementary green */
  --green-soft:#E4F0DD;
  --paper:#F3F5FA;       /* cool blueprint white */
  --white:#FFFFFF;
  --line:#D6DBEA;
  --muted:#565C7E;
  --on-navy-muted:#B9BED8;
  --led:#FFC94A;         /* LED yellow, used only on the circuit */
  --display:"Chakra Petch", "Segoe UI", system-ui, sans-serif;
  --body:"Figtree", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --wrap:1180px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--navy);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:20px}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;margin:0;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:clamp(30px,4.2vw,46px)}
h3{font-size:24px}
p{margin:0}
.lede{font-size:19px;color:var(--muted);max-width:62ch}
.section{padding-block:clamp(64px,9vw,112px)}
.section-head{display:grid;gap:16px;margin-bottom:44px;max-width:760px}
.brace{font-family:var(--mono);font-weight:700;color:var(--orange)}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--body);font-weight:700;font-size:17px;padding:15px 24px;border-radius:12px;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s ease, background .15s ease}
.btn:hover{transform:translateY(-2px)}
.btn-orange{background:var(--orange);color:var(--white)}
.btn-orange:hover{background:#DD5B1D}
.btn-ghost{border-color:rgba(255,255,255,.45);color:var(--white)}
.btn-ghost:hover{border-color:var(--white)}
.btn-navy{background:var(--navy);color:var(--white)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(243,245,250,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.nav-logo img{height:44px;width:auto}
.nav-links{display:flex;align-items:center;gap:22px;list-style:none;margin:0;padding:0;font-weight:600;font-size:15px;white-space:nowrap}
.nav-links a{text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
.nav-links a:hover{border-color:var(--orange)}
.nav-cta{padding:11px 18px;font-size:15px}
.menu-btn{display:none;background:none;border:2px solid var(--navy);border-radius:10px;padding:8px 12px;font:600 15px var(--body);color:var(--navy);cursor:pointer}
@media (max-width:1180px){
  .menu-btn{display:block}
  .nav-links{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:flex-start;gap:4px;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 20px 20px}
  .nav-links.open{display:flex}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:12px 0}
  .nav-logo img{height:38px}
}

/* ---------- Hero (breadboard) ---------- */
.hero{background:var(--navy);color:var(--white);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.13) 1.4px,transparent 1.6px);background-size:22px 22px;mask-image:linear-gradient(90deg,transparent 0%,#000 55%);-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 55%)}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;padding-block:clamp(56px,8vw,96px)}
.hero h1{font-size:clamp(38px,5.6vw,66px)}
.hero .lede{color:var(--on-navy-muted);margin-top:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));row-gap:14px;max-width:480px;margin-top:44px;border-top:1px solid rgba(255,255,255,.18)}
.hero-facts div{padding:16px 16px 0 0}
.hero-facts dt{font-size:13px;color:var(--on-navy-muted)}
.hero-facts dd{margin:2px 0 0;font-family:var(--display);font-weight:600;font-size:20px;line-height:1.2}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr}.hero-facts{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:12px}}

/* hero board */
.board{position:relative;aspect-ratio:1/1;max-width:520px;width:100%;justify-self:center}
.board svg.traces{position:absolute;inset:0;width:100%;height:100%}
.board .core{position:absolute;left:50%;top:50%;width:46%;transform:translate(-50%,-50%);background:var(--navy-2);border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:8% 7%;box-shadow:0 0 0 8px rgba(238,106,42,.07)}
.tag{position:absolute;font-family:var(--mono);font-size:13px;line-height:1.35;background:var(--white);color:var(--navy);border-radius:10px;padding:8px 11px;white-space:nowrap}
.tag b{display:block;font-family:var(--body);font-size:12px;font-weight:600;color:var(--muted)}
.tag.t1{left:0;top:6%}.tag.t2{right:0;top:14%}.tag.t3{left:2%;bottom:12%}.tag.t4{right:2%;bottom:4%}
.led{position:absolute;width:10px;height:10px;border-radius:50%;background:var(--led);box-shadow:0 0 0 4px rgba(255,201,74,.18)}
@media (max-width:520px){.tag{font-size:12px;padding:6px 8px}.tag b{font-size:11px}}

/* ---------- Pathway ---------- */
.ages{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 10px}
.ages button{font:700 17px var(--mono);width:52px;height:52px;border-radius:12px;border:2px solid var(--line);background:var(--white);color:var(--navy);cursor:pointer}
.ages button:hover{border-color:var(--navy)}
.ages button[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:var(--white)}
.age-label{font-weight:600;font-size:15px;color:var(--muted)}
.result{margin:22px 0 36px;padding:18px 22px;background:var(--white);border:1px solid var(--line);border-radius:14px;font-size:18px;max-width:820px;min-height:88px}
.result strong{font-weight:700}

.circuit{position:relative}
.track-label{font-family:var(--display);font-weight:600;font-size:15px;color:var(--muted);margin-bottom:12px}
.chips{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;list-style:none;margin:0;padding:0}
.chips::before{content:"";position:absolute;left:4%;right:4%;top:50%;height:4px;background:var(--line);border-radius:2px;z-index:0}
.chips .pulse{position:absolute;top:50%;left:4%;width:16px;height:16px;margin-top:-6px;border-radius:50%;background:var(--led);box-shadow:0 0 12px 4px rgba(255,201,74,.6);opacity:0;z-index:2;pointer-events:none}
.chip{position:relative;z-index:1}
.chip a{display:grid;gap:4px;text-decoration:none;background:var(--white);border:2px solid var(--line);border-radius:14px;padding:18px 16px 16px;height:100%;transition:border-color .2s, background .2s, color .2s, transform .2s}
.chip a::before,.chip a::after{content:"";position:absolute;left:18px;right:18px;height:6px;background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 14px)}
.chip a::before{top:-8px}.chip a::after{bottom:-8px}
.chip .lvl{font-family:var(--mono);font-size:12.5px;font-weight:700;color:var(--orange-ink)}
.chip .name{font-family:var(--display);font-weight:700;font-size:20px;line-height:1.1}
.chip .age{font-size:14.5px;color:var(--muted)}
.chip .dot{position:absolute;top:14px;right:14px;width:10px;height:10px;border-radius:50%;background:var(--line)}
.chip.on a{border-color:var(--navy);background:var(--navy);color:var(--white);transform:translateY(-3px)}
.chip.on .age{color:var(--on-navy-muted)}
.chip.on .lvl{color:var(--led)}
.chip.on .dot{background:var(--led);box-shadow:0 0 10px 2px rgba(255,201,74,.7)}
.chip.on a::before,.chip.on a::after{background:repeating-linear-gradient(90deg,var(--navy) 0 6px,transparent 6px 14px)}
.side-tracks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;list-style:none;margin:0;padding:0;max-width:calc(40% + 18px)}
.side-tracks .chip a{border-style:dashed}
.side-tracks .chip.on a{border-style:solid;background:var(--green);border-color:var(--green)}
.side-tracks .chip.on .age{color:#E4F0DD}
.side-tracks .chip.on .lvl{color:var(--white)}
.circuit-note{margin-top:22px;font-size:15px;color:var(--muted)}
@media (max-width:860px){
  .chips{grid-template-columns:1fr;gap:16px;padding-left:28px}
  .chips::before{left:9px;right:auto;top:8px;bottom:8px;width:4px;height:auto}
  .chips .pulse{display:none}
  .chip a::before,.chip a::after{display:none}
  .chip::before{content:"";position:absolute;left:-23px;top:50%;width:18px;height:4px;background:var(--line)}
  .chip.on::before{background:var(--navy)}
  .side-tracks{max-width:none;grid-template-columns:1fr 1fr}
  .side-tracks .chip::before{display:none}
}
@media (max-width:420px){.side-tracks{grid-template-columns:1fr}}

/* ---------- Programmes ---------- */
.programmes{background:var(--white);border-block:1px solid var(--line)}
.prog-group{font-family:var(--display);font-weight:600;font-size:15px;color:var(--muted);padding-bottom:10px;border-bottom:2px solid var(--navy);margin:56px 0 0}
.prog{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:40px;padding-block:44px;border-bottom:1px solid var(--line)}
.prog:last-child{border-bottom:0}
.prog-art{background:var(--navy);border-radius:20px;aspect-ratio:1/1;max-width:100%;display:grid;place-items:center;position:relative;overflow:hidden}
.prog-art::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1.2px,transparent 1.4px);background-size:18px 18px}
.prog-art svg{position:relative;width:78%;height:auto}
.prog-body{min-width:0;display:grid;gap:18px;align-content:start}
.prog-meta{display:flex;flex-wrap:wrap;gap:8px}
.pill{font-size:14px;font-weight:600;padding:5px 12px;border-radius:999px;background:var(--paper);border:1px solid var(--line)}
.pill.orange{background:#FDE9DF;border-color:#F7C8B1;color:#8E3A10}
.pill.green{background:var(--green-soft);border-color:#C3DDB6;color:#2D5E1D}
.prog h3{font-size:clamp(26px,3vw,34px)}
.prog-body > p{max-width:66ch}
.cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.cols h4{font-family:var(--display);font-size:17px;font-weight:700;margin:0 0 8px}
.cols ul{margin:0;padding-left:20px;display:grid;gap:6px}
.cols li::marker{color:var(--orange)}
.good{font-size:15.5px;color:var(--muted);padding-top:14px;border-top:1px dashed var(--line)}
@media (max-width:820px){.prog{grid-template-columns:1fr;gap:24px}.prog-art{max-width:260px}.cols{grid-template-columns:1fr}}

.extras{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:56px}
.extra{background:var(--paper);border-radius:18px;padding:28px;display:grid;gap:12px;align-content:start}
.extra .keys{display:flex;gap:6px;flex-wrap:wrap}
.extra .keys span{font:700 14px var(--mono);min-width:34px;height:34px;display:grid;place-items:center;border-radius:7px;background:var(--white);border:1px solid var(--line);border-bottom-width:3px;padding:0 8px}
.extra .keys span.home{border-color:var(--orange);color:var(--orange-ink)}
@media (max-width:820px){.extras{grid-template-columns:1fr}}

/* ---------- How a class runs ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{position:relative;padding:28px 24px 0 0;border-top:4px solid var(--line);counter-increment:s;display:grid;gap:10px;align-content:start}
.steps li::before{content:counter(s);position:absolute;top:-20px;left:0;width:36px;height:36px;border-radius:50%;background:var(--navy);color:var(--white);font:700 16px var(--mono);display:grid;place-items:center}
.steps li:first-child{border-top-color:var(--orange)}
.steps h3{font-size:22px;margin-top:8px}
.steps p{color:var(--muted);font-size:16px}
@media (max-width:860px){.steps{grid-template-columns:1fr;gap:34px}.steps li{padding:26px 0 0}}

/* ---------- Why ---------- */
.why{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start}
.ratio{background:var(--navy);color:var(--white);border-radius:22px;padding:32px;display:grid;gap:18px;position:sticky;top:100px}
.ratio .big{font-family:var(--display);font-weight:700;font-size:clamp(64px,9vw,104px);line-height:.9}
.ratio .big span{color:var(--orange)}
.seats{display:grid;grid-template-columns:repeat(3,44px);gap:10px;align-items:center}
.seats i{width:44px;height:44px;border-radius:12px;background:var(--navy-2);border:2px solid rgba(255,255,255,.2);display:grid;place-items:center;font:700 13px var(--mono);font-style:normal;color:var(--on-navy-muted)}
.seats-wrap{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.coach{width:56px;height:56px;border-radius:14px;background:var(--orange);display:grid;place-items:center;font:700 13px var(--mono);color:var(--white)}
.ratio p{color:var(--on-navy-muted)}
.reasons{display:grid;gap:0;list-style:none;margin:0;padding:0}
.reasons li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.reasons li:first-child{padding-top:0}
.reasons svg{width:44px;height:44px}
.reasons h3{font-size:21px;margin-bottom:6px}
.reasons p{color:var(--muted)}
@media (max-width:900px){.why{grid-template-columns:1fr}.ratio{position:static}}


/* ---------- Parents ---------- */
.parents{background:var(--white);border-block:1px solid var(--line)}
.quotes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.q{margin:0;padding:26px 28px;border-radius:18px;background:var(--paper);display:grid;gap:16px;align-content:space-between}
.q blockquote{margin:0;font-size:17px;line-height:1.6}
.q blockquote::before{content:"{ ";font-family:var(--mono);font-weight:700;color:var(--orange)}
.q blockquote::after{content:" }";font-family:var(--mono);font-weight:700;color:var(--orange)}
.q figcaption{font-weight:700;font-size:15px;color:var(--muted)}
.q-lead{grid-column:1/-1;background:var(--navy);color:var(--white)}
.q-lead blockquote{font-family:var(--display);font-weight:600;font-size:clamp(20px,2.3vw,26px);line-height:1.4;max-width:60ch}
.q-lead figcaption{color:var(--on-navy-muted)}
@media (max-width:760px){.quotes{grid-template-columns:1fr}}

/* ---------- Trial ---------- */
.trial{background:var(--navy);color:var(--white);position:relative;overflow:hidden}
.trial::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.1) 1.4px,transparent 1.6px);background-size:22px 22px}
.trial .wrap{position:relative}
.trial .lede{color:var(--on-navy-muted)}
.trial-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:start}
.slots{display:grid;gap:18px}
.slot-day{background:var(--navy-2);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:20px 22px}
.slot-day h3{font-size:18px;margin-bottom:12px}
.slot-times{display:flex;flex-wrap:wrap;gap:8px}
.slot-times span{font:700 15px var(--mono);padding:8px 12px;border-radius:9px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18)}
.trial-list{display:grid;gap:10px;padding-left:20px;margin:0;color:var(--on-navy-muted)}
.trial-list li::marker{color:var(--orange)}
.form{background:var(--white);color:var(--navy);border-radius:20px;padding:28px;display:grid;gap:16px}
.form h3{font-size:24px}
.field{display:grid;gap:6px}
.field label{font-weight:600;font-size:15px}
.field input,.field select{font:500 16px var(--body);padding:13px 14px;border-radius:10px;border:2px solid var(--line);background:var(--paper);color:var(--navy);width:100%}
.field input:focus,.field select:focus{border-color:var(--navy);outline:none}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form .btn{justify-content:center;width:100%}
.form small{color:var(--muted);font-size:14px}
.phone{font-family:var(--mono);font-weight:700;user-select:all}
@media (max-width:900px){.trial-grid{grid-template-columns:1fr}}
@media (max-width:420px){.row2{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;padding:20px 0;font-family:var(--display);font-weight:600;font-size:20px;line-height:1.3}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-weight:700;color:var(--orange);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq details > div{padding:0 0 22px;color:var(--muted);max-width:70ch;display:grid;gap:10px}

/* ---------- Visit ---------- */
.visit{background:var(--white);border-top:1px solid var(--line)}
.visit-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start}
.contact{display:grid;gap:0;margin:0}
.contact div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact dt{font-weight:600;color:var(--muted);font-size:15px}
.contact dd{margin:0;font-weight:600}
.contact a{color:var(--orange-ink);display:inline-block;padding-block:6px}
.copy-btn{margin-left:8px;font:600 13px var(--body);padding:4px 10px;border-radius:8px;border:1px solid var(--line);background:var(--paper);color:var(--navy);cursor:pointer}
.areas{background:var(--paper);border-radius:18px;padding:28px;display:grid;gap:14px}
.areas ul{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.areas li{font-size:15px;font-weight:600;padding:6px 12px;border-radius:999px;background:var(--white);border:1px solid var(--line)}
@media (max-width:860px){.visit-grid{grid-template-columns:1fr}.contact div{grid-template-columns:1fr;gap:2px}}

/* ---------- Footer ---------- */
.footer{background:var(--navy);color:var(--on-navy-muted);padding-block:48px 36px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:40px}
.footer img{height:46px;width:auto;margin-bottom:16px}
.footer h4{font-family:var(--display);color:var(--white);font-size:16px;margin:0 0 10px}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.footer a{text-decoration:none}
.footer a:hover{color:var(--white)}
.teach{margin-top:28px;font-size:14px;max-width:110ch}
.teach b{color:var(--white)}
.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);font-size:14px}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr}}

.wa-float{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:60;background:var(--green);color:var(--white);text-decoration:none;font-weight:700;font-size:15px;padding:13px 18px;border-radius:999px;box-shadow:0 8px 24px rgba(27,31,60,.28);display:flex;align-items:center;gap:8px}
.wa-float svg{width:20px;height:20px}


/* ---------- coding challenge ---------- */
.game-sec{background:var(--white);border-block:1px solid var(--line)}
.game-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:56px;align-items:center}
.game-copy{display:grid;gap:18px;align-content:start}
.code-list{list-style:none;margin:6px 0 0;padding:14px;min-height:72px;border:2px dashed var(--line);border-radius:14px;background:var(--paper);display:flex;flex-wrap:wrap;gap:8px;align-content:flex-start;counter-reset:c}
.code-list:empty::before{content:"Your code will appear here";color:var(--muted);font:500 14px var(--mono);align-self:center}
.code-list li{counter-increment:c;font:700 14px var(--mono);color:#fff;padding:8px 12px;border-radius:8px;display:flex;align-items:center;gap:8px}
.code-list li::before{content:counter(c);font-size:11px;opacity:.75}
.code-list li.F{background:var(--orange)}.code-list li.L,.code-list li.R{background:var(--green)}
.code-list li.now{outline:3px solid var(--navy);outline-offset:2px}
.cmds{display:flex;flex-wrap:wrap;gap:10px}
.cmd{font:700 15px var(--body);padding:12px 16px;border-radius:10px;border:2px solid transparent;color:#fff;cursor:pointer;transition:transform .12s}
.cmd:hover{transform:translateY(-2px)}
.cmd:active{transform:translateY(1px)}
.cmd.fwd{background:var(--orange)}.cmd.lft,.cmd.rgt{background:var(--green)}
.runrow{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.btn-plain{font:600 15px var(--body);background:none;border:2px solid var(--line);border-radius:10px;padding:12px 16px;color:var(--navy);cursor:pointer}
.btn-plain:hover{border-color:var(--navy)}
.g-msg{font-weight:600;min-height:3.2em}
.g-msg.win{color:var(--green)}.g-msg.oops{color:#B9480F}
.arena-wrap{display:grid;gap:10px}
.arena{position:relative;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-template-rows:repeat(6,minmax(0,1fr));gap:6px;padding:14px;background:var(--navy);border-radius:18px;aspect-ratio:1/1;width:100%;max-width:460px}
.arena .cell{background:rgba(255,255,255,.06);border-radius:8px}
.arena .box{background:#4A5080;border-radius:8px;box-shadow:inset 0 -4px 0 rgba(0,0,0,.25)}
.arena .goal{display:grid;place-items:center;line-height:1;overflow:hidden;font-size:clamp(20px,4vw,30px);color:var(--led)}
.bot{position:absolute;width:calc((100% - 28px - 30px)/6);aspect-ratio:1/1;left:14px;top:14px;transition:transform .32s ease;display:grid;place-items:center;pointer-events:none}
.bot .face{width:84%;height:84%;border-radius:10px;background:var(--white);display:grid;place-items:center;transition:transform .25s ease;position:relative}
.bot .face span{font:700 clamp(10px,2.2vw,15px) var(--mono);color:var(--navy);letter-spacing:2px}
.bot .face::after{content:"";position:absolute;right:-7px;top:50%;margin-top:-6px;border:6px solid transparent;border-left:8px solid var(--orange)}
.bot.hit .face{background:#FFD9C7}
.next-game{font-weight:700;color:var(--orange-ink)}
.arena-note{font:600 13px var(--mono);color:var(--muted)}
@media (max-width:900px){.game-grid{grid-template-columns:1fr;gap:28px}.arena-wrap{max-width:460px}}
/* moving signals on hero traces */
.board .flow{stroke:#FFC94A;stroke-dasharray:3 46;animation:flow 2.6s linear infinite}
@keyframes flow{to{stroke-dashoffset:-98}}
/* programme drawings respond on hover */
.prog-art svg{transition:transform .35s ease}
.prog:hover .prog-art svg{transform:scale(1.05) rotate(-1.5deg)}


/* ---------- arduino challenge ---------- */
.ard-sec{background:var(--paper)}
.ard-head{display:grid;gap:14px;max-width:780px;margin-bottom:36px}
.ard-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:36px;align-items:start}
.ide{background:#0E1230;border-radius:16px;overflow:hidden;border:1px solid #262B52;min-width:0}
.ide-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:#161B42;border-bottom:1px solid #262B52}
.ide-bar .dot{width:10px;height:10px;border-radius:50%;background:#3A4070}
.ide-bar .dot:first-child{background:var(--orange)}
.ide-title{margin-left:10px;font:600 13px var(--mono);color:var(--on-navy-muted)}
.code{margin:0;padding:20px 18px;font:500 15px/1.95 var(--mono);color:#E6E9F7;overflow-x:auto;white-space:pre;tab-size:2}
.code .c{color:#7C83AD}.code .k{color:#FF8A4C}.code .f{color:#8FD3FF}
.code select{font:700 14px var(--mono);color:#1B1F3C;background:var(--led);border:0;border-radius:6px;padding:3px 4px;margin:0 1px;cursor:pointer;vertical-align:1px}
.code select:focus-visible{outline:3px solid #fff;outline-offset:1px}
.ide-foot{display:flex;flex-wrap:wrap;gap:10px;padding:14px 18px 18px}
.ide-foot .btn-plain{color:#fff;border-color:#3A4070}
.ide-foot .btn{white-space:nowrap}
.btn-link{background:none;border:0;color:var(--led);font:700 15px var(--body);text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:12px 4px;margin-left:auto}
.code select.ans{background:#9BE47F}
@media (max-width:600px){.btn-link{margin-left:0;width:100%;text-align:left}}
.ide-foot .btn-plain:hover{border-color:#fff}
.bench{display:grid;gap:14px;min-width:0}
.breadboard{width:100%;height:auto;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:8px}
.breadboard .glow{opacity:0;transition:opacity .15s}
.breadboard .on .glow{opacity:.45}
.breadboard #ledR.on .bulb{fill:#FF5A5F}.breadboard #ledY.on .bulb{fill:#FFC94A}.breadboard #ledG.on .bulb{fill:#7BE05A}
.timeline{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 12px;align-items:center}
.tl-label{font:600 13px var(--mono);color:var(--muted)}
.tl-bar{display:flex;height:34px;border-radius:8px;overflow:hidden;background:var(--white);border:1px solid var(--line)}
.tl-bar span{display:grid;place-items:center;font:700 12px var(--mono);color:#1B1F3C;border-right:2px solid #fff;min-width:0;overflow:hidden;white-space:nowrap}
.tl-bar .R{background:#FF8A8D}.tl-bar .Y{background:#FFD873}.tl-bar .G{background:#9BE47F}.tl-bar .O{background:#E3E6F0;color:var(--muted)}.tl-bar .M{background:repeating-linear-gradient(45deg,#FFB27F 0 6px,#FFD873 6px 12px)}
.tl-bar .tl-empty{flex:1;background:none;color:var(--muted);font-weight:500}
@media (max-width:900px){.ard-grid{grid-template-columns:1fr}}
@media (max-width:600px){.code{font-size:13px;padding:16px 14px}.code select{font-size:13px}.ide-foot .btn,.ide-foot .btn-plain{flex:1;justify-content:center}}
/* ---------- skills ---------- */
.skills-sec{background:var(--white);border-block:1px solid var(--line);padding-block:clamp(56px,7vw,88px)}
.sk-head{display:grid;gap:12px;max-width:760px;margin-bottom:30px}
.sk-head a{color:var(--orange-ink);font-weight:600}
.cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px;display:grid;gap:8px;align-content:start;transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-4px);border-color:var(--navy);box-shadow:0 12px 24px -16px rgba(27,31,60,.45)}
.card .ic{width:46px;height:46px;border-radius:12px;background:var(--navy);color:var(--led);display:grid;place-items:center;font:700 13px var(--mono)}
.card h3{font-size:18px;line-height:1.15}
.card p{color:var(--muted);font-size:14.5px;line-height:1.45}
.card.hl{background:var(--orange);border-color:var(--orange)}
.card.hl .ic{background:#fff;color:var(--orange-ink);font-size:16px}
.card.hl h3{color:#fff}.card.hl p{color:#FFF1E9}
.sk-cta{margin-top:28px}
@media (max-width:900px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:400px){.card{padding:14px}.card h3{font-size:16px}.card p{font-size:13.5px}}

/* ---------- compact programme list ---------- */
.plist-label{font:700 14px var(--display);color:var(--muted);margin:30px 0 12px}
.plist{list-style:none;margin:0;padding:0;display:grid;gap:10px;position:relative}
.plist.path::before{content:"";position:absolute;left:37px;top:30px;bottom:30px;width:3px;background:var(--orange);border-radius:2px;opacity:.6}
.prow{position:relative;background:var(--white);border:2px solid var(--line);border-radius:14px;transition:border-color .2s,box-shadow .2s}
.prow summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:16px;align-items:center;padding:12px 16px 12px 10px}
.prow summary::-webkit-details-marker{display:none}
.p-ic{position:relative;z-index:1;width:56px;height:56px;border-radius:12px;background:var(--navy);display:grid;place-items:center;overflow:hidden}
.p-ic svg{width:100%;height:100%;transition:transform .3s}
.prow:hover .p-ic svg{transform:scale(1.08)}
.p-main{display:grid;gap:3px;min-width:0}
.p-tags{display:flex;flex-wrap:wrap;gap:6px}
.p-tags .pill{font-size:12px;padding:2px 9px}
.p-name{font-size:20px;line-height:1.15}
.p-one{color:var(--muted);font-size:15px;line-height:1.4}
.p-side{display:flex;align-items:center;gap:10px}
.p-fit{display:none;font:700 12px var(--body);color:#fff;background:var(--green);border-radius:999px;padding:4px 10px;white-space:nowrap}
.p-more{font:700 14px var(--body);color:var(--orange-ink);white-space:nowrap}
.p-more::after{content:" +";font-family:var(--mono)}
.prow[open] .p-more{font-size:0}
.prow[open] .p-more::after{content:"Close \2212";font:700 14px var(--body)}
.prow.rec{border-color:var(--green);box-shadow:0 10px 24px -16px rgba(67,135,45,.7)}
.prow.rec .p-fit{display:inline-block}
.prow[open]{border-color:var(--navy)}
.p-detail{padding:4px 22px 22px 82px;display:grid;gap:16px;max-width:900px}
.p-detail > p:first-child{font-size:16.5px}
.plist-note{margin-top:16px;color:var(--muted);font-size:15px;max-width:80ch}
.cta-strip{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:var(--navy);color:#fff;border-radius:16px;padding:20px 24px}
.cta-strip p{font-size:17px}
@media (max-width:640px){
  .prow summary{grid-template-columns:48px minmax(0,1fr);gap:12px;padding:12px 12px 12px 8px}
  .p-ic{width:48px;height:48px}
  .plist.path::before{left:31px}
  .p-side{grid-column:2;justify-content:space-between}
  .p-name{font-size:18px}
  .p-detail{padding:2px 16px 18px}
  .cta-strip .btn{width:100%;justify-content:center}
}
/* ---------- why: class loop strip ---------- */
.why-sec{background:var(--paper);border-block:1px solid var(--line)}
.loop-strip{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px;counter-reset:l}
.loop-strip li{counter-increment:l;display:flex;align-items:center;gap:8px;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:7px 14px 7px 7px;font-size:15px}
.loop-strip li::before{content:counter(l);width:24px;height:24px;border-radius:50%;background:var(--orange);color:#fff;font:700 13px var(--mono);display:grid;place-items:center}
.reasons li{padding-block:14px}
/* ---------- more quotes ---------- */
.more-q{margin-top:16px}
.more-q summary{cursor:pointer;font:700 16px var(--body);color:var(--orange-ink);list-style:none;padding:8px 0}
.more-q summary::-webkit-details-marker{display:none}
.more-q summary::after{content:" +"}
.more-q[open] summary::after{content:" \2212"}
.more-q .quotes{margin-top:12px}

/* ---------- game tabs ---------- */
.g-top{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:30px}
.g-top h2{margin-top:6px}
.g-tabs{display:flex;gap:6px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:5px}
.g-tabs button{font:700 15px var(--body);border:0;background:none;color:var(--navy);padding:10px 16px;border-radius:10px;cursor:pointer}
.g-tabs button span{font-weight:500;color:var(--muted);font-size:13px;margin-left:4px}
.g-tabs button[aria-selected="true"]{background:var(--navy);color:#fff}
.g-tabs button[aria-selected="true"] span{color:var(--on-navy-muted)}
.gp-title{font-size:clamp(24px,2.6vw,30px)}
#gp-robot .game-grid{align-items:start}
#arduino-challenge .ard-head{margin-bottom:24px}
@media (max-width:600px){.g-tabs{width:100%}.g-tabs button{flex:1;padding:10px 8px;font-size:14px}.g-tabs button span{display:block;margin:0}}
.why-sec .section-head{max-width:none}
/* ---------- phone polish ---------- */
@media (max-width:600px){
  .tag.t3{display:none}
  .hero-actions .btn{flex:1 1 100%;justify-content:center}
  .keys span{min-width:28px;height:28px;font-size:12px}
  .footer ul{gap:10px}
}

.copy-btn{min-height:32px}
@media (max-width:600px){
  .wa-float{padding:0;width:56px;height:56px;justify-content:center;font-size:0;gap:0;border-radius:50%}
  .wa-float svg{width:28px;height:28px}
  .cmds{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .cmd{padding:12px 6px;font-size:14px}
  .runrow{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:8px}
  .runrow .btn,.runrow .btn-plain{justify-content:center;padding:12px 8px}
  .board{max-width:380px}
  .section{padding-block:64px}
  h2{font-size:30px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ---------- multi-page additions ---------- */
.nav-links a[aria-current="page"]{border-color:var(--orange)}
.phero{background:var(--navy);color:var(--white);position:relative;overflow:hidden}
.phero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1.4px,transparent 1.6px);background-size:22px 22px;mask-image:linear-gradient(90deg,transparent 10%,#000 70%);-webkit-mask-image:linear-gradient(90deg,transparent 10%,#000 70%)}
.phero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center;padding-block:clamp(40px,6vw,72px)}
.crumbs{font-size:14px;color:var(--on-navy-muted);margin-bottom:14px}
.crumbs a{color:var(--on-navy-muted)}
.crumbs a:hover{color:#fff}
.phero h1{font-size:clamp(34px,4.8vw,56px)}
.phero .lede{color:var(--on-navy-muted);margin-top:16px;max-width:60ch}
.phero .pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.phero .pills span{font-weight:600;font-size:14px;padding:6px 12px;border-radius:999px;background:var(--navy-2);border:1px solid rgba(255,255,255,.16)}
.phero .hero-actions{margin-top:26px}
.phero-art{width:200px;height:200px;border-radius:24px;background:var(--navy-2);border:1px solid rgba(255,255,255,.14);display:grid;place-items:center}
.phero-art svg{width:84%;height:auto}
@media (max-width:820px){.phero .wrap{grid-template-columns:1fr}.phero-art{display:none}}
.level-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.level-nav a{font-weight:700;font-size:15px;text-decoration:none;padding:9px 14px;border-radius:10px;border:2px solid var(--line);background:var(--white)}
.level-nav a span{font-weight:500;color:var(--muted);margin-left:6px;font-size:13px}
.level-nav a:hover{border-color:var(--navy)}
.others{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.others a{display:grid;grid-template-columns:56px minmax(0,1fr);gap:14px;align-items:center;text-decoration:none;background:var(--white);border:2px solid var(--line);border-radius:14px;padding:12px}
.others a:hover{border-color:var(--navy)}
.others .p-ic{width:56px;height:56px}
.others b{display:block;font-family:var(--display);font-size:18px}
.others small{color:var(--muted);font-size:14px}
@media (max-width:820px){.others{grid-template-columns:1fr}}
a.prow{display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:16px;align-items:center;padding:12px 16px 12px 10px;text-decoration:none;color:inherit}
a.prow:hover{border-color:var(--navy)}
a.prow .p-more::after{content:""}
@media (max-width:640px){a.prow{grid-template-columns:48px minmax(0,1fr);gap:12px;padding:12px 12px 12px 8px}}
.band-cta{background:var(--navy);color:#fff}
.band-cta .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;padding-block:44px}
.band-cta h2{font-size:clamp(26px,3vw,36px)}
.band-cta p{color:var(--on-navy-muted);margin-top:6px}
.band-cta .hero-actions{margin:0}
.teaser{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
.teaser a{display:grid;gap:8px;text-decoration:none;border-radius:16px;padding:24px;background:var(--navy);color:#fff;border:2px solid var(--navy)}
.teaser a:nth-child(2){background:var(--white);color:var(--navy);border-color:var(--line)}
.teaser a:hover{border-color:var(--orange)}
.teaser b{font-family:var(--display);font-size:22px}
.teaser span{opacity:.85}
.teaser em{font-style:normal;font-weight:700;color:var(--orange)}
@media (max-width:720px){.teaser{grid-template-columns:1fr}}
.section.tight{padding-block:clamp(48px,6vw,80px)}