/* Mathsy website styles */
@font-face{font-family:"Bricolage Grotesque";font-style:normal;font-display:swap;font-weight:200 800;font-stretch:75% 100%;src:url(fonts/bricolage-grotesque.woff2) format("woff2-variations"),url(fonts/bricolage-grotesque.woff2) format("woff2")}
@font-face{font-family:"Lexend";font-style:normal;font-display:swap;font-weight:400;src:url(fonts/lexend-400.woff2) format("woff2")}
@font-face{font-family:"Lexend";font-style:normal;font-display:swap;font-weight:500;src:url(fonts/lexend-500.woff2) format("woff2")}
@font-face{font-family:"Lexend";font-style:normal;font-display:swap;font-weight:600;src:url(fonts/lexend-600.woff2) format("woff2")}
@font-face{font-family:"Lexend";font-style:normal;font-display:swap;font-weight:700;src:url(fonts/lexend-700.woff2) format("woff2")}

:root{
  --paper:#F3F8FC; --grid:#D7E5F2; --ink:#1C2B4A; --muted:#55647D;
  --sky:#2F6FED; --sky-soft:#DCE7FD; --mint:#16A06A; --mint-soft:#D5F2E5;
  --sun:#FFC83D; --sun-soft:#FFF1C7; --coral:#E3504A; --coral-soft:#FBE0DE;
  --white:#FFFFFF; --line:#E1E8F0;
  --display:"Bricolage Grotesque","Trebuchet MS",sans-serif;
  --body:"Lexend","Segoe UI",system-ui,sans-serif;
  --wrap:1160px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6}
a{color:inherit}
:focus-visible{outline:3px solid var(--sky);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:50}
.skip:focus{left:12px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
.squared{background-color:var(--paper);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
h1,h2,h3{font-family:var(--display);font-weight:800;line-height:1.05;letter-spacing:-.015em;margin:0}
h2{font-size:clamp(2rem,4.4vw,3rem);max-width:20ch}
h3{font-size:1.35rem;line-height:1.15}
p{margin:0}
.lead{font-size:1.15rem;color:var(--muted);max-width:58ch}
.ruled{border-top:3px solid var(--ink)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:3px solid var(--ink);border-radius:14px;padding:12px 20px;font:700 1.02rem var(--body);background:var(--sky);color:#fff;text-decoration:none;cursor:pointer;box-shadow:0 5px 0 var(--ink);transition:transform .08s,box-shadow .08s}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}
.btn.sun{background:var(--sun);color:var(--ink)}
.btn.ghost{background:var(--white);color:var(--ink)}
.btn.small{padding:8px 14px;font-size:.92rem;box-shadow:0 4px 0 var(--ink)}
.btn[disabled]{opacity:.6;cursor:wait}

/* Header */
header.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(6px);border-bottom:2px solid var(--line)}
.nav{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--display);font-weight:800;font-size:1.6rem;letter-spacing:-.02em}
.logo svg{width:34px;height:34px}
.main-nav a{text-decoration:none;color:var(--muted)}
.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--ink)}

/* Forms */
.signup{display:flex;flex-direction:column;gap:12px;max-width:540px}
.signup .row{display:flex;gap:10px;flex-wrap:wrap}
.signup input[type=email]{flex:1 1 240px;min-width:0;height:54px;border:3px solid var(--ink);border-radius:14px;padding:0 16px;font:500 1rem var(--body);color:var(--ink);background:#fff}
.signup .btn{height:54px}
.heard{display:flex;flex-direction:column;gap:6px}
.heard label{font-weight:600;font-size:.9rem}
.heard label span{font-weight:400;color:var(--muted)}
.heard select{height:48px;width:100%;max-width:320px;min-width:0;border:3px solid var(--ink);border-radius:12px;padding:0 12px;font:500 1rem var(--body);color:var(--ink);background:#fff}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:var(--muted)}
.check input{width:20px;height:20px;margin:2px 0 0;flex:none;accent-color:var(--sky)}
.check a{color:var(--ink)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.formmsg{font-weight:600;min-height:1.6em;margin-top:4px}
.formmsg.ok{color:var(--mint)} .formmsg.err{color:var(--coral)}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:600;font-size:.95rem}
.field input,.field select,.field textarea{border:3px solid var(--ink);border-radius:12px;padding:12px 14px;font:500 1rem var(--body);color:var(--ink);background:#fff;width:100%}
.field textarea{min-height:110px;resize:vertical}
.field small{color:var(--muted);font-size:.85rem}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
@media (max-width:640px){.form-grid{grid-template-columns:minmax(0,1fr)}}
.form-grid .full{grid-column:1/-1}

/* Hero */
.hero{padding:64px 0 72px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center}
@media (max-width:900px){.hero-grid{grid-template-columns:minmax(0,1fr);gap:40px}.hero{padding:40px 0 56px}}
.hero h1{font-size:clamp(3.2rem,9vw,6.4rem);line-height:.92;letter-spacing:-.035em;margin-bottom:22px}
.hero h1 span{display:block}
.hero .lead{color:var(--ink);font-size:1.2rem;margin-bottom:28px}
.note{margin-top:14px;font-size:.92rem;color:var(--muted);max-width:52ch}
.founding{display:inline-flex;gap:10px;align-items:flex-start;margin-top:18px;background:var(--sun-soft);border:2px dashed var(--ink);border-radius:12px;padding:10px 14px;font-size:.92rem;max-width:540px}
.founding b{font-family:var(--display);font-size:1rem;flex:none}
.page-hero{padding:56px 0 64px}
.page-hero h1{font-size:clamp(2.6rem,7vw,4.6rem);line-height:.95;letter-spacing:-.03em;margin-bottom:18px;max-width:16ch}
.page-hero .lead{color:var(--ink)}
.h1-sub{display:block;font-size:.36em;line-height:1.15;letter-spacing:-.01em;margin-top:.35em}

/* Tables check card */
.tc{background:#fff;border:3px solid var(--ink);border-radius:24px;box-shadow:8px 10px 0 var(--ink);padding:24px 24px 22px}
.tc h2,.tc h3{font-size:1.5rem}
.tc .sub{color:var(--muted);font-size:.95rem;margin:4px 0 16px}
.modes{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.modes button{border:2px solid var(--ink);border-radius:999px;background:#fff;padding:6px 14px;font:600 .9rem var(--body);color:var(--ink);cursor:pointer}
.modes button[aria-pressed="true"]{background:var(--ink);color:#fff}
.stage{display:flex;flex-direction:column;align-items:center;text-align:center;min-height:300px;justify-content:center}
.count{font-size:.85rem;font-weight:600;color:var(--muted);margin-bottom:8px}
.ring{position:relative;width:96px;height:96px}
.ring svg{transform:rotate(-90deg)}
.ring b{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--display);font-size:1.4rem;color:var(--muted)}
.q{font-family:var(--display);font-weight:800;font-size:3.4rem;line-height:1.1;margin:10px 0 12px;font-variant-numeric:tabular-nums}
.ans{display:flex;align-items:center;justify-content:center;width:150px;height:64px;border:3px solid var(--ink);border-radius:14px;font:800 2rem var(--display);color:var(--ink);background:#fff;font-variant-numeric:tabular-nums}
.ans.on:empty::after{content:"";width:3px;height:1.1em;background:var(--ink);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
@media (prefers-reduced-motion:reduce){.ans.on:empty::after{animation:none}}
#tc-run:focus{outline:none}
.pad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%;max-width:264px;margin-top:14px;touch-action:manipulation;-webkit-user-select:none;user-select:none}
.pad button{height:52px;border:3px solid var(--ink);border-radius:12px;background:#fff;box-shadow:0 3px 0 var(--ink);font:800 1.5rem var(--display);color:var(--ink);cursor:pointer;-webkit-tap-highlight-color:transparent}
.pad button:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink)}
.pad .fn{font:700 .9rem var(--body)}
.pad .go{background:var(--sun)}
.pad[aria-disabled="true"] button{opacity:.5;cursor:default;transform:none;box-shadow:0 3px 0 var(--ink)}
.ans.right{background:var(--mint-soft);border-color:var(--mint)}
.ans.miss{background:var(--coral-soft);border-color:var(--coral)}
.hint{font-size:.9rem;color:var(--muted);margin-top:10px;min-height:1.5em}
.score{font-family:var(--display);font-weight:800;font-size:3rem;line-height:1}
.tally{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;width:100%;margin:16px 0}
.tally span{border-radius:8px;border:2px solid var(--line);font-size:.75rem;font-weight:700;padding:6px 0}
.tally .ok{background:var(--mint-soft);border-color:var(--mint)}
.tally .no{background:var(--coral-soft);border-color:var(--coral)}
.endtext{color:var(--muted);font-size:.95rem;max-width:36ch;margin:10px 0 16px}
.endbtns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}

/* Countdown strip */
.strip{background:var(--ink);color:#fff;padding:18px 0}
.strip p{font-size:1.05rem;text-align:center}
.strip b{font-family:var(--display);color:var(--sun);font-size:1.25rem}
.strip a{color:var(--sun)}

/* Sections */
section{padding:96px 0}
@media (max-width:700px){section{padding:64px 0}}
.head{margin-bottom:48px}
.head .lead{margin-top:16px}

/* Three ideas */
.ideas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
@media (max-width:900px){.ideas{grid-template-columns:minmax(0,1fr);gap:48px}}
.idea .art{height:170px;padding:18px;border:3px solid var(--ink);border-radius:18px;margin-bottom:22px;display:flex;align-items:center;justify-content:center;gap:14px;overflow:hidden}
.idea h3{margin-bottom:10px}
.idea p{color:var(--muted)}
.idea .art.sky{background-color:var(--sky-soft)}
.idea .art.coral{background:var(--coral-soft)}
.idea .art.mint{background:var(--mint-soft)}
.bubble{background:#fff;border:2.5px solid var(--ink);border-radius:14px;padding:10px 14px;font-size:.9rem;max-width:230px;box-shadow:0 4px 0 var(--ink);text-align:left}
.bubble b{font-family:var(--display);display:block;font-size:1.05rem}
.mini-q{font-family:var(--display);font-weight:800;font-size:1.55rem;white-space:nowrap;background:#fff;border:2.5px solid var(--ink);border-radius:12px;padding:4px 12px}
.mini-q s{color:var(--coral);text-decoration-thickness:3px}
.arrow{font-family:var(--display);font-size:1.8rem;font-weight:800}

/* Ladder */
.ladder{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.ladder li{padding:22px 20px;border:3px solid var(--ink);border-radius:18px;background:#fff}
.ladder .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;border:2.5px solid var(--ink);font-family:var(--display);font-weight:800;margin-bottom:12px}
.ladder li:nth-child(1) .n{background:var(--sky-soft)} .ladder li:nth-child(2) .n{background:var(--mint-soft)} .ladder li:nth-child(3) .n{background:var(--sun-soft)} .ladder li:nth-child(4) .n{background:var(--coral-soft)} .ladder li:nth-child(5) .n{background:var(--ink);color:#fff}
.ladder h3{font-size:1.1rem;margin-bottom:6px}
.ladder p{font-size:.92rem;color:var(--muted)}
@media (max-width:900px){.ladder{grid-template-columns:minmax(0,1fr);gap:10px}.ladder li{display:grid;grid-template-columns:48px 1fr;column-gap:10px}.ladder .n{grid-row:span 2;margin:0}}

/* Years */
.years{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.yr{border:2.5px solid var(--ink);border-radius:14px;background:#fff;padding:16px 14px;min-height:118px;display:flex;flex-direction:column;gap:6px}
.yr b{font-family:var(--display);font-size:1.25rem;line-height:1}
.yr span{font-size:.84rem;color:var(--muted);line-height:1.4}
.yr.all{background:var(--sun-soft)} .yr.all span{color:var(--ink)}
@media (max-width:1000px){.years{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:520px){.years{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Game */
.game{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
@media (max-width:1000px){.game{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.game{grid-template-columns:minmax(0,1fr)}}
.tile{border:3px solid var(--ink);border-radius:20px;background:#fff;overflow:hidden;display:flex;flex-direction:column}
.tile .pic{height:150px;margin:10px 10px 0;border-radius:12px;display:flex;align-items:center;justify-content:center}
.tile .txt{padding:18px 18px 22px}
.tile h3{font-size:1.2rem;margin-bottom:6px}
.tile p{font-size:.94rem;color:var(--muted)}
.card-fan{display:flex;gap:10px;align-items:center}
.card-fan div{width:56px;height:80px;border:2.5px solid var(--ink);border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-family:var(--display);font-weight:800;box-shadow:0 3px 0 var(--ink)}
.card-fan small{font-size:.8rem}
.card-fan div:nth-child(1){transform:rotate(-6deg);background:#fff}
.card-fan div:nth-child(2){transform:translateY(-6px);background:var(--mint-soft)}
.card-fan div:nth-child(3){transform:rotate(6deg);background:var(--sun-soft)}
.goal{display:flex;flex-direction:column;align-items:center;gap:6px}
.goal .bar{width:150px;height:12px;border:2px solid var(--ink);border-radius:7px;background:#fff;overflow:hidden}
.goal .bar i{display:block;height:100%;width:70%;background:var(--sun)}
.goal small{font-size:.8rem;font-weight:600}

/* Pricing */
.plans{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;max-width:960px}
@media (max-width:800px){.plans{grid-template-columns:minmax(0,1fr)}}
.plan{border:3px solid var(--ink);border-radius:22px;background:#fff;padding:28px}
.plan.plus{background:var(--sun-soft);box-shadow:8px 10px 0 var(--ink)}
.plan h3{font-size:1.6rem}
.price{font-family:var(--display);font-weight:800;font-size:2.6rem;line-height:1;margin:14px 0 4px}
.price small{font-family:var(--body);font-weight:500;font-size:1rem;color:var(--muted)}
.plan .alt{color:var(--muted);font-size:.95rem;margin-bottom:18px}
.plan ul,.ticks{list-style:none;margin:0 0 24px;padding:0}
.plan li,.ticks li{padding:7px 0 7px 30px;border-top:1.5px solid rgba(28,43,74,.12);position:relative;font-size:.97rem}
.plan li:first-child,.ticks li:first-child{border-top:0}
.plan li::before,.ticks li::before{content:"";position:absolute;left:2px;top:13px;width:16px;height:9px;border-left:3px solid var(--mint);border-bottom:3px solid var(--mint);transform:rotate(-45deg)}
.plan .incl{font-weight:600}
.plan .incl::before{border-color:var(--ink)}
.offer{margin-top:28px;max-width:960px;font-size:.98rem}
.offer b{font-family:var(--display);font-size:1.1rem}

/* Safety */
.safe{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
@media (max-width:900px){.safe{grid-template-columns:minmax(0,1fr);gap:32px}}
.promises{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.promises li{display:flex;gap:14px;padding:16px 20px;border:3px solid var(--ink);border-radius:16px;background:#fff;align-items:flex-start}
.promises svg{flex:none;width:26px;height:26px;margin-top:2px}
.promises b{display:block;font-family:var(--display);font-size:1.08rem}
.promises span{font-size:.94rem;color:var(--muted)}
.signoff{margin-top:12px;font-weight:600}

/* Schools band */
.schools{background:var(--ink);color:#fff}
.schools .wrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center}
@media (max-width:900px){.schools .wrap{grid-template-columns:minmax(0,1fr);gap:36px}}
.schools .btn{border-color:#0E1626;box-shadow:0 5px 0 #0E1626}
.schools .lead{color:#C9D3E3;margin:16px 0 28px}
.schools ul{margin:0 0 30px;padding-left:20px;color:#E1E7F0}
.schools li{margin:6px 0}
.heat{display:grid;grid-template-columns:90px repeat(8,1fr);gap:4px;background:#26385E;border-radius:18px;padding:18px;font-size:.72rem;color:#C9D3E3}
.heat i{height:20px;border-radius:5px;display:block}
.heat .h0{background:#F2D4D2}.heat .h1{background:#F9E7B6}.heat .h2{background:#BFE6D2}.heat .h3{background:#59BD8E}
.heat .lbl{align-self:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.heat .colh{text-align:center;font-weight:600}
.heat-light{background:#fff;border:3px solid var(--ink);color:var(--muted)}

/* FAQ */
.faq{max-width:820px}
.faq details{border-top:2px solid var(--line);padding:6px 0}
.faq details:last-child{border-bottom:2px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:16px 40px 16px 0;font-family:var(--display);font-weight:800;font-size:1.25rem;line-height:1.25;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:10px;font-size:1.8rem;font-weight:600}
.faq details[open] summary::after{content:"\2212"}
.faq details p{padding:0 0 18px;color:var(--muted);max-width:70ch}

/* Long-form text pages */
.prose > *{max-width:760px}
.prose > .facts{max-width:900px}
.prose h2{font-size:1.7rem;margin:44px 0 12px;max-width:none}
.prose h3{font-size:1.2rem;margin:28px 0 8px}
.prose p,.prose li{color:#33415C}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:22px}
.prose li{margin:5px 0}
.prose table{border-collapse:separate;border-spacing:0;width:100%;margin:8px 0 20px;font-size:.95rem}
@media (max-width:700px){.prose table{display:block;overflow-x:auto}.prose th,.prose td{min-width:150px}}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1.5px solid var(--line);vertical-align:top}
.prose th{font-family:var(--display);font-size:1rem}
.prose .updated{color:var(--muted);font-size:.95rem}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:8px 0 32px}
@media (max-width:760px){.facts{grid-template-columns:repeat(2,minmax(0,1fr))}}
.fact{border:3px solid var(--ink);border-radius:16px;background:#fff;padding:16px}
.fact b{display:block;font-family:var(--display);font-size:2.2rem;line-height:1}
.fact span{font-size:.88rem;color:var(--muted)}
.tips{counter-reset:tip;list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.tips li{counter-increment:tip;border:3px solid var(--ink);border-radius:16px;background:#fff;padding:16px 18px 16px 64px;position:relative}
.tips li::before{content:counter(tip);position:absolute;left:16px;top:14px;width:32px;height:32px;border-radius:50%;border:2.5px solid var(--ink);display:grid;place-items:center;font-family:var(--display);font-weight:800;background:var(--sun-soft)}
.tips b{font-family:var(--display);font-size:1.08rem;display:block}
.cta-band{border:3px solid var(--ink);border-radius:22px;background:var(--sun-soft);padding:28px;margin-top:40px}
.cta-band h2{font-size:clamp(1.6rem,3.6vw,2.2rem);margin-bottom:10px}
.cta-band p{margin-bottom:18px;color:var(--ink)}

/* Final CTA + footer */
.final h2{font-size:clamp(2.4rem,6vw,4.2rem);max-width:16ch;margin-bottom:24px}
footer{background:var(--white);border-top:2px solid var(--line);padding:36px 0 48px;font-size:.9rem;color:var(--muted)}
footer .wrap{display:flex;gap:28px;flex-wrap:wrap;align-items:center;justify-content:space-between}
footer a{text-decoration:none}
footer a:hover{text-decoration:underline}
.legal{flex-basis:100%;font-size:.82rem}
.foot-top{flex-basis:100%;display:grid;grid-template-columns:minmax(0,1.3fr) repeat(3,minmax(0,1fr));gap:28px 32px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.foot-brand .logo{font-size:1.3rem;color:var(--ink)}
.foot-tag{margin:8px 0 10px;font:800 1.15rem var(--display);color:var(--ink)}
.foot-col p{margin:0 0 6px;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.foot-col ul{margin:0;padding:0;list-style:none}
.foot-col a{display:inline-flex;align-items:center;min-height:40px}
.foot-bottom{flex-basis:100%;display:flex;flex-wrap:wrap;align-items:center;gap:0 18px}
.foot-bottom nav{display:flex;flex-wrap:wrap;gap:0 18px}
.foot-bottom a{display:inline-flex;align-items:center;min-height:44px}
.foot-bottom nav a::before{content:"\00b7";margin-right:18px;color:var(--muted)}
@media (max-width:900px){.foot-top{grid-template-columns:repeat(3,minmax(0,1fr))}.foot-brand{grid-column:1/-1}.foot-col a,.foot-bottom a,.foot-brand .logo{min-height:44px;padding:10px 0}}
@media (max-width:560px){.foot-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 20px}.foot-bottom nav a::before{content:none}}
.follow ul{display:flex;flex-wrap:wrap;gap:4px;margin:0 0 0 -10px;padding:0;list-style:none}
.follow li a{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;color:var(--ink)}
.follow li a:hover{color:var(--sky);background:var(--paper)}
.follow svg{display:block}

/* Practice without the pressure */
.calm{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:900px){.calm{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.calm{grid-template-columns:minmax(0,1fr)}}
.calm-item{border:3px solid var(--ink);border-radius:18px;background:#fff;padding:22px 22px 24px}
.calm-item h3{font-size:1.25rem;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.calm-item h3::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;border:2.5px solid var(--coral);background:linear-gradient(45deg,transparent 45%,var(--coral) 45%,var(--coral) 58%,transparent 58%)}
.calm-item p{color:var(--muted);font-size:.97rem}

/* Header: phone menu (details/summary, works without JS) */
.nav > .main-nav{display:flex;gap:22px;margin-left:auto;font-weight:500;font-size:.95rem}
.join .short{display:none}
.menu{display:none;position:static}
.menu summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border:2px solid var(--ink);border-radius:12px;font:600 .92rem var(--body);background:#fff;color:var(--ink)}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{background:var(--ink);color:#fff}
.menu nav{position:absolute;left:0;right:0;top:100%;display:flex;flex-direction:column;background:#fff;border-bottom:2px solid var(--line);box-shadow:0 12px 24px rgba(28,43,74,.12);padding:6px 20px 14px}
.menu nav a{display:flex;align-items:center;min-height:48px;text-decoration:none;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.menu nav a:last-child{border-bottom:0}
.menu nav a[aria-current="page"]{color:var(--sky)}
@media (max-width:1080px){.nav{gap:10px}.nav > .main-nav{display:none}.menu{display:block}.nav .join{margin-left:auto}}
.main-nav a,.join{white-space:nowrap}
@media (max-width:520px){.join .long{display:none}.join .short{display:inline}}

/* Breadcrumbs: 48px tall so the squared paper carries on into the hero */
.crumbs{height:48px;overflow:hidden}
.crumbs ol{display:flex;align-items:center;height:48px;list-style:none;margin:0 auto;padding-top:0;padding-bottom:0;font-size:.88rem;color:var(--muted);white-space:nowrap;overflow:hidden}
.crumbs li{display:flex;align-items:center;min-width:0}
.crumbs li + li::before{content:"";width:6px;height:6px;border-right:2px solid var(--muted);border-top:2px solid var(--muted);transform:rotate(45deg);margin:0 12px 0 8px;flex:none}
.crumbs a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.crumbs a:hover{color:var(--ink)}
.crumbs [aria-current]{overflow:hidden;text-overflow:ellipsis;color:var(--ink);font-weight:600}
.crumbs + .page-hero{padding-top:16px}

/* Footer: Learn list */

/* Guides and practice pages */
.page-hero .meta{margin-top:14px;color:var(--muted);font-size:.92rem}
.page-hero .narrow h1{max-width:20ch}
.fact-list{list-style:none;padding:0!important;margin:8px 0 24px!important;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;max-width:640px}
@media (max-width:560px){.fact-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
.fact-list li{margin:0!important;border:2px solid var(--line);border-radius:12px;padding:8px 12px;background:#fff;font-variant-numeric:tabular-nums;color:var(--ink)!important}
.fact-list b{font-family:var(--display);font-size:1.1rem}
.diagram{margin:12px 0 24px;max-width:680px}
.diagram svg{display:block;width:100%;height:auto;background:#fff;border:2px solid var(--line);border-radius:16px}
.diagram figcaption{font-size:.9rem;color:var(--muted);margin-top:8px}
.diagram svg.sized{width:auto;max-width:100%;padding:8px}
.steps li{margin:6px 0}
.prose .method-grid,.prose .place-value{width:auto;border-collapse:collapse;margin:0;font-variant-numeric:tabular-nums}
.method-grid caption,.place-value caption{text-align:left;font-weight:700;padding-bottom:6px}
.prose .method-grid th,.prose .method-grid td{min-width:64px;padding:10px 12px;text-align:center;border:2px solid var(--ink);font-size:1.1rem}
.prose .method-grid th{background:var(--sky-soft)}
.prose .place-value th{min-width:0;background:var(--sky-soft);font-size:.8rem;padding:8px;border:2px solid var(--ink);text-align:center}
.prose .place-value td{min-width:0;font-size:1.6rem;font-weight:700;text-align:center;padding:8px 12px;border:2px solid var(--ink)}
.prose .place-value td.pt{border-right-width:6px}
.table-cards{list-style:none;padding:0!important;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;max-width:900px!important;margin:8px 0 28px!important}
.table-cards li{margin:0!important}
.table-cards a,.table-cards .soon{display:flex;flex-direction:column;gap:2px;border:3px solid var(--ink);border-radius:16px;padding:14px 16px;background:#fff;text-decoration:none;color:var(--ink);box-shadow:0 4px 0 var(--ink)}
.table-cards a:hover{background:var(--sky-soft)}
.table-cards .soon{border-color:var(--line);box-shadow:none;color:var(--muted)}
.table-cards b{font-family:var(--display);font-size:2rem;line-height:1}
.table-cards small{color:var(--muted);font-size:.82rem}
.callout{border-left:5px solid var(--sun);background:var(--sun-soft);border-radius:0 14px 14px 0;padding:14px 18px;margin:8px 0 20px}
.callout p:last-child{margin-bottom:0}
.related{margin-top:40px}
.related h2{font-size:1.5rem;margin:0 0 10px}
.related ul{list-style:none;padding:0!important;display:flex;flex-wrap:wrap;gap:10px}
.related li{margin:0!important}
.related a{display:inline-flex;align-items:center;min-height:44px;padding:6px 14px;border:2px solid var(--ink);border-radius:16px;text-decoration:none;font-weight:600;color:var(--ink);background:#fff}
.related a:hover{background:var(--sky-soft)}
.sources{margin-top:36px;font-size:.92rem}
.sources h2{font-size:1.2rem;margin:0 0 6px}
.sources p,.sources li{color:var(--muted)!important}
.picker button{min-width:52px}

/* Printable times table grid */
.grid-tools{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;margin:8px 0 18px}
.grid-tools .modes{margin:0}
.grid-actions{display:flex;gap:10px;flex-wrap:wrap}
.grid-version{max-width:none!important;margin:0 0 28px}
.tt-grid{border-collapse:collapse!important;width:100%;max-width:640px;table-layout:fixed;font-variant-numeric:tabular-nums;margin:0!important;display:table!important}
.tt-grid caption{text-align:left;font-family:var(--display);font-weight:800;font-size:1.1rem;padding-bottom:8px;color:var(--ink)}
.prose .tt-grid th,.prose .tt-grid td{min-width:0;padding:0;height:44px;text-align:center;vertical-align:middle;border:1.5px solid #B9C8DB;font-size:.95rem}
.prose .tt-grid th{background:var(--sky-soft);font-family:var(--display);font-size:1rem}
.tt-grid td.sq{background:var(--sun-soft);font-weight:700}
.tt-grid th a{display:flex;align-items:center;justify-content:center;min-height:44px;color:inherit;text-decoration:underline;text-decoration-color:var(--sky);text-decoration-thickness:2px;text-underline-offset:3px}
.tt-grid th a:hover{color:var(--sky)}
.tt-grid.fill td.sq{background:#fff;font-weight:400}
@media (max-width:560px){.prose .tt-grid th,.prose .tt-grid td{height:30px;font-size:.72rem}.prose .tt-grid th{font-size:.78rem}.tt-grid th a{min-height:30px}}

/* Print: just the content, black on white. On the grid page, one grid per A4 page. */
@media print{
  @page{size:A4 portrait;margin:12mm}
  body{font-size:11pt;background:#fff;color:#000}
  header.top,footer,.crumbs,.skip,.tc,.cta-band,.related,.grid-tools,.strip,form{display:none!important}
  .squared{background:#fff!important}
  .page-hero{padding:0 0 8mm}
  .page-hero h1{font-size:22pt;max-width:none}
  section{padding:0}
  a{color:#000}
  main:has(.tt-grid) .page-hero,.prose:has(.tt-grid) > :not(.grid-version){display:none!important}
  .grid-version{break-inside:avoid;page-break-inside:avoid}
  .grid-version:not([hidden]) ~ .grid-version:not([hidden]){break-before:page;page-break-before:always}
  .prose .tt-grid{max-width:none;width:100%}
  .prose .tt-grid th,.prose .tt-grid td{height:17mm!important;font-size:15pt!important;border:1pt solid #000!important;color:#000}
  .prose .tt-grid th{background:#eee!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .tt-grid td.sq{background:#f3f3f3!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .tt-grid.fill td.sq{background:#fff!important}
  .tt-grid caption{font-size:16pt;padding-bottom:4mm}
  .tt-grid th a{text-decoration:none!important;color:#000!important;min-height:0}
}
.words{margin:8px 0 24px;max-width:760px}
.words dt{font-family:var(--display);font-weight:800;font-size:1.05rem;margin-top:14px}
.words dd{margin:2px 0 0;color:#33415C}
.prose details{border:2px solid var(--line);border-radius:14px;padding:10px 16px;margin:8px 0 20px;background:#fff}
.prose details summary{cursor:pointer;font-weight:700;min-height:28px}
.frac{white-space:nowrap}.frac sup,.frac sub{font-size:.72em}
.afrac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;line-height:1.3;margin:0 .15em;white-space:nowrap}.afrac-top{border-bottom:1.5px solid currentColor;padding:0 .2em}.afrac-bot{padding:0 .2em}.nowrap{white-space:nowrap}
.formula{font-size:1.25em;text-align:center}.sqrt-bar{border-top:1.5px solid currentColor;padding-left:.1em}
/* SATs arithmetic practice (/sats-arithmetic/) */
.ap{background:#fff;border:3px solid var(--ink);border-radius:24px;box-shadow:8px 10px 0 var(--ink);padding:24px;margin:8px 0 44px}
.ap h2{margin-top:0}
.ap-start:focus,.ap-end:focus{outline:none}
.ap-start,.ap-end,.ap-list>li{scroll-margin-top:96px}
.ap-btns{display:flex;flex-wrap:wrap;gap:12px;margin:12px 0}
.ap-small{color:var(--muted);font-size:.9rem;margin:8px 0 0}
.ap-runbar{position:sticky;top:76px;z-index:5;display:flex;justify-content:space-between;flex-wrap:wrap;gap:4px 16px;background:var(--sun-soft);border:2px solid var(--ink);border-radius:14px;padding:8px 14px;font-weight:700;margin-bottom:8px}
.ap-runbar .ap-clock{font-variant-numeric:tabular-nums}
.ap-list,.ap-sheet{list-style:none;counter-reset:q;padding:0;margin:0}
.ap-list>li,.ap-sheet>li{counter-increment:q;position:relative;padding:14px 8px 14px 48px;border-top:1px solid var(--line)}
.ap-list>li::before,.ap-sheet>li::before{content:counter(q);position:absolute;left:4px;top:16px;width:32px;height:32px;border-radius:50%;background:var(--sky-soft);font:800 .95rem/32px var(--display);text-align:center}
.ap-list>li.ok{background:var(--mint-soft)}.ap-list>li.no{background:var(--coral-soft)}
.ap-q{font-size:1.25rem;font-weight:600;line-height:2.1;margin:0}
.ap-in{font:inherit;font-size:1.2rem;width:7.5em;max-width:100%;padding:4px 8px;border:2px solid var(--ink);border-radius:10px;background:#fff;color:var(--ink);vertical-align:middle}
.ap-in:focus{outline:3px solid var(--sky);outline-offset:2px}
.ap-in[readonly]{background:transparent}
.ap-fr{display:inline-flex;align-items:center;gap:8px;vertical-align:middle}
.ap-fr .w{width:3em;text-align:center}
.ap-nd{display:inline-flex;flex-direction:column;gap:7px;background:linear-gradient(var(--ink),var(--ink)) center/100% 2px no-repeat}
.ap-nd .ap-in{width:3.2em;text-align:center;padding:1px 4px;line-height:1.5}
.ap-mk{color:var(--muted);font-size:.85rem;margin:2px 0 0}
.ap-fb{margin:6px 0 0;font-weight:600}
.ap-finish{margin-top:18px}
.ap-finish-msg{font-weight:600;margin:12px 0 0}
.ap-score{font:800 2rem var(--display);margin:0 0 4px}
.ap-help{display:block;font-weight:400;font-size:.9rem}
.ap-wrong ul{padding-left:1.2em}.ap-wrong li{margin:6px 0}
.ap-box{display:inline-block;width:5em;height:1.5em;border:2px solid var(--ink);border-radius:6px;vertical-align:middle}
.ap-printable.ap-js{display:none}
.ap .frac,.ap-printable .frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;font-size:0;line-height:1;margin:0 .1rem}
.ap .frac sup,.ap .frac sub,.ap-printable .frac sup,.ap-printable .frac sub{font-size:1.05rem;line-height:1.15;position:static;padding:0 .15rem}
.ap .frac sup,.ap-printable .frac sup{border-bottom:2px solid currentColor}
.ap-key .frac sup,.ap-key .frac sub,.ap-printable p .frac sup,.ap-printable p .frac sub,.ap-help .frac sup{font-size:.85rem}
.ap-sheet .ap-q{line-height:1.9}
.ap-sheet-meta .ap-line{display:inline-block;width:10em;border-bottom:1.5px solid currentColor;margin-right:1em}.ap-sheet-meta .ap-line.short{width:3em;margin-right:.3em}
.ap-key ol{padding-left:1.8em}.ap-key li{margin:4px 0}.ap-km{color:var(--muted);font-size:.85em}
@media (max-width:600px){.ap{padding:18px 14px;box-shadow:5px 6px 0 var(--ink)}.ap-list>li,.ap-sheet>li{padding-left:42px}.ap-runbar{top:68px}.ap-q{font-size:1.15rem}.ap-in{width:5.2em}}
@media print{
  main:has(.ap-printable) .page-hero,.prose:has(.ap-printable) > :not(.ap-printable){display:none!important}
  .ap-printable,.ap-printable.ap-js{display:block!important}
  .ap-sheet-title{font-size:17pt;margin:0 0 3mm}
  .ap-sheet-intro{font-size:10pt}
  .ap-sheet{display:grid;grid-template-columns:1fr 1fr;column-gap:8mm}
  .ap-sheet>li{min-height:36mm;break-inside:avoid;page-break-inside:avoid;border-top:1pt solid #999;padding:3mm 0 3mm 9mm}
  .ap-sheet>li.m2{grid-column:1/-1;min-height:80mm}
  .ap-sheet>li::before{background:none;border:1pt solid #000;width:6.5mm;height:6.5mm;font-size:10pt;line-height:6.5mm;top:3mm;left:0}
  .ap-sheet .ap-q{font-size:14pt}
  .ap-box{width:28mm;height:10mm;border:1.5pt solid #000}
  .ap-mk{font-size:9pt;color:#000;text-align:right}
  .ap-key{break-before:page;page-break-before:always}
  .ap-key h3{font-size:15pt}
  .ap-key ol{columns:2;column-gap:10mm;font-size:11pt}.ap-key li{break-inside:avoid}
  .ap-km{color:#000}
  .ap-sheet .frac sup,.ap-sheet .frac sub{font-size:12pt}.ap-sheet .frac sup{border-bottom-width:1.2pt}
  .ap-key .frac sup,.ap-key .frac sub{font-size:9pt}
}
/* The /learn/ hub */
.prose .learn-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px;margin:12px 0 8px;max-width:none}
.prose .learn-list li{margin:0}
.learn-list a{display:flex;flex-direction:column;justify-content:center;min-height:56px;height:100%;box-sizing:border-box;padding:10px 16px;border:2px solid var(--ink);border-radius:16px;background:#fff;text-decoration:none;font-weight:700;color:var(--ink)}
.learn-list a:hover{background:var(--sky-soft)}
.learn-list span{display:block;font-size:.82rem;font-weight:500;color:var(--muted);margin-top:2px}