:root {
  --navy-950:#07192f;
  --navy-900:#102b4e;
  --navy-800:#173b68;
  --navy-700:#285887;
  --cream:#f8f4ec;
  --paper:#fffdf8;
  --white:#ffffff;
  --ink:#152238;
  --muted:#627087;
  --line:#dfd8cb;
  --yellow:#f2bd3d;
  --yellow-soft:#fff0b9;
  --blue:#5b8db8;
  --blue-soft:#dfeefa;
  --coral:#df765e;
  --coral-soft:#f9ded7;
  --sage:#5f927b;
  --sage-soft:#dfeee7;
  --purple:#7469a7;
  --purple-soft:#e8e4f5;
  --success:#23734f;
  --danger:#a33f38;
  --shadow-sm:0 10px 24px rgba(16,43,78,.08);
  --shadow:0 24px 70px rgba(16,43,78,.14);
  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:28px;
  --radius-xl:40px;
  --page-width:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--cream);font-family:"Avenir Next","Segoe UI",Arial,sans-serif;line-height:1.58}
img{display:block;max-width:100%}
a{color:inherit}
button,input,select{font:inherit}
button{cursor:pointer}
.skip-link{position:absolute;left:-9999px;top:8px;z-index:1000;padding:10px 14px;background:var(--yellow);color:var(--navy-950);font-weight:900}
.skip-link:focus{left:8px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,253,248,.95);border-bottom:1px solid rgba(16,43,78,.12);backdrop-filter:blur(18px)}
.nav-shell{width:min(var(--page-width),calc(100% - 36px));min-height:76px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand-link{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand-link img{width:45px;height:45px}
.brand-text{display:grid;line-height:1.05}
.brand-text strong{font-size:1rem;color:var(--navy-900);letter-spacing:-.015em}
.brand-text span{margin-top:5px;color:var(--muted);font-size:.67rem;font-weight:800;letter-spacing:.13em}
.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{position:relative;padding:10px 12px;border-radius:999px;text-decoration:none;color:#43516a;font-size:.82rem;font-weight:800;white-space:nowrap}
.site-nav a:hover{background:#efe9de;color:var(--navy-900)}
.site-nav a[aria-current="page"]{background:var(--navy-900);color:#fff}
.nav-toggle{display:none;border:0;border-radius:999px;padding:10px 14px;background:var(--navy-900);color:#fff;font-size:.78rem;font-weight:900}
.container{width:min(var(--page-width),calc(100% - 36px));margin:auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;color:var(--navy-700);font-size:.75rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:4px;border-radius:99px;background:var(--yellow)}
.home-hero{position:relative;overflow:hidden;background-color:var(--cream);background-image:linear-gradient(rgba(16,43,78,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,43,78,.045) 1px,transparent 1px);background-size:34px 34px}
.home-hero::before{content:"";position:absolute;width:460px;height:460px;border-radius:50%;background:var(--yellow-soft);right:-180px;top:-210px;filter:blur(2px)}
.hero-shell{position:relative;width:min(var(--page-width),calc(100% - 36px));min-height:650px;margin:auto;display:grid;grid-template-columns:minmax(0,1.03fr) minmax(380px,.97fr);gap:68px;align-items:center;padding:74px 0 82px}
.hero-copy{position:relative;z-index:2}
.hero-kicker{display:inline-flex;align-items:center;border:1px solid rgba(16,43,78,.16);border-radius:999px;padding:8px 12px;background:rgba(255,255,255,.76);color:var(--navy-800);font-size:.72rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.home-hero h1{max-width:690px;margin:22px 0 18px;color:var(--navy-950);font-size:clamp(3.9rem,7.7vw,7.1rem);line-height:.88;letter-spacing:-.075em;font-weight:900}
.marker{position:relative;display:inline-block;z-index:0}
.marker::after{content:"";position:absolute;z-index:-1;left:-.02em;right:-.04em;bottom:.02em;height:.22em;border-radius:4px;background:var(--yellow);transform:rotate(-1.2deg)}
.hero-lead{max-width:650px;margin:0;color:#526077;font-size:clamp(1.08rem,1.6vw,1.28rem);line-height:1.65}
.hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:30px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border:1px solid transparent;border-radius:999px;padding:11px 19px;text-decoration:none;font-size:.79rem;font-weight:900;letter-spacing:.02em;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.button:hover{transform:translateY(-2px)}
.button.primary{background:var(--navy-900);color:#fff;box-shadow:0 10px 20px rgba(16,43,78,.18)}
.button.primary:hover{background:var(--navy-800)}
.button.yellow{background:var(--yellow);color:var(--navy-950)}
.button.yellow:hover{background:#f7ca5c}
.button.outline{border-color:rgba(16,43,78,.23);background:rgba(255,255,255,.7);color:var(--navy-900)}
.button.white{background:#fff;color:var(--navy-900)}
.button.navy{background:var(--navy-900);color:#fff}
.math-board{position:relative;min-height:480px;border-radius:38px;padding:30px;color:#fff;background:var(--navy-900);box-shadow:var(--shadow);overflow:hidden;transform:rotate(1.25deg)}
.math-board::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.075) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.075) 1px,transparent 1px);background-size:32px 32px}
.math-board::after{content:"";position:absolute;width:240px;height:240px;border:54px solid rgba(242,189,61,.16);border-radius:50%;right:-75px;bottom:-110px}
.board-top{position:relative;display:flex;justify-content:space-between;align-items:center;z-index:2}
.board-label{display:inline-flex;border-radius:999px;padding:7px 11px;background:var(--yellow);color:var(--navy-950);font-size:.68rem;font-weight:900;letter-spacing:.08em}
.board-dots{display:flex;gap:6px}.board-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.42)}
.board-main{position:relative;z-index:2;display:grid;place-items:center;min-height:240px;text-align:center}
.board-equation{font-size:clamp(2.2rem,4.2vw,4.3rem);font-weight:900;letter-spacing:-.05em}
.board-caption{margin-top:8px;color:rgba(255,255,255,.63);font-size:.8rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase}
.board-notes{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.note-card{border-radius:16px;padding:15px;background:#fff;color:var(--navy-900);box-shadow:0 10px 28px rgba(0,0,0,.18);font-weight:900}
.note-card small{display:block;margin-top:3px;color:var(--muted);font-size:.66rem;letter-spacing:.05em;text-transform:uppercase}
.note-card.yellow{background:var(--yellow)}
.note-card.coral{background:var(--coral-soft)}
.section{padding:82px 0}
.section.paper{background:var(--paper)}
.section.navy{background:var(--navy-950);color:#fff}
.section-heading{max-width:760px;margin-bottom:36px}
.section-heading h2,.content-title{margin:0;color:var(--navy-950);font-size:clamp(2.3rem,4.7vw,4.35rem);line-height:.98;letter-spacing:-.055em;font-weight:900}
.section-heading p{margin:17px 0 0;color:var(--muted);font-size:1.05rem}
.section.navy .section-heading h2{color:#fff}.section.navy .section-heading p{color:rgba(255,255,255,.67)}
.resource-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.resource-tile{position:relative;min-height:280px;border-radius:var(--radius-lg);padding:28px;overflow:hidden;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease}
.resource-tile:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm)}
.resource-tile.games{grid-column:span 7;background:var(--yellow)}
.resource-tile.hints{grid-column:span 5;background:var(--blue-soft)}
.resource-tile.videos{grid-column:span 5;background:var(--coral-soft)}
.resource-tile.about{grid-column:span 7;background:var(--sage-soft)}
.tile-icon{width:64px;height:64px;display:grid;place-items:center;border-radius:18px;background:rgba(255,255,255,.65);color:var(--navy-900)}
.tile-icon svg{width:34px;height:34px;stroke:currentColor;fill:none;stroke-width:2.3;stroke-linecap:round;stroke-linejoin:round}
.resource-tile h3{max-width:420px;margin:42px 0 9px;color:var(--navy-950);font-size:clamp(1.75rem,3vw,2.7rem);line-height:1;letter-spacing:-.045em}
.resource-tile p{max-width:520px;margin:0;color:#33465f}
.tile-arrow{position:absolute;right:24px;bottom:22px;width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:var(--navy-900);color:#fff;font-size:1.35rem}
.tile-math{position:absolute;right:22px;top:16px;color:rgba(16,43,78,.1);font-size:7rem;font-weight:900;line-height:1}
.topic-cloud{display:flex;flex-wrap:wrap;gap:10px}
.topic-chip{display:inline-flex;align-items:center;border:1px solid rgba(16,43,78,.14);border-radius:999px;padding:11px 15px;background:#fff;color:var(--navy-800);font-size:.8rem;font-weight:800;box-shadow:0 5px 14px rgba(16,43,78,.04)}
.topic-chip::before{content:"";width:8px;height:8px;margin-right:8px;border-radius:50%;background:var(--yellow)}
.promise-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
.promise{border-top:3px solid var(--yellow);padding:18px 0 0}.promise strong{display:block;color:var(--navy-900);font-size:1.04rem}.promise span{display:block;margin-top:5px;color:var(--muted);font-size:.88rem}
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid rgba(16,43,78,.12);background:var(--paper)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(16,43,78,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(16,43,78,.035) 1px,transparent 1px);background-size:34px 34px}
.page-hero-shell{position:relative;width:min(var(--page-width),calc(100% - 36px));min-height:360px;margin:auto;display:grid;grid-template-columns:1fr 360px;gap:40px;align-items:center;padding:62px 0}
.page-hero h1{margin:0;color:var(--navy-950);font-size:clamp(3.2rem,7vw,6.5rem);line-height:.9;letter-spacing:-.07em}
.page-hero p:last-child{max-width:720px;margin:18px 0 0;color:var(--muted);font-size:1.08rem}
.hero-symbols{position:relative;min-height:220px}
.symbol{position:absolute;display:grid;place-items:center;border-radius:22px;color:var(--navy-900);font-weight:900;box-shadow:var(--shadow-sm)}
.symbol.s1{width:120px;height:120px;left:18px;top:12px;background:var(--yellow);font-size:3rem;transform:rotate(-8deg)}
.symbol.s2{width:135px;height:92px;right:12px;top:32px;background:var(--blue-soft);font-size:2.1rem;transform:rotate(7deg)}
.symbol.s3{width:110px;height:82px;left:120px;bottom:2px;background:var(--coral-soft);font-size:1.9rem;transform:rotate(3deg)}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.card-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.tool-card,.resource-card,.video-card,.info-card{border:1px solid rgba(16,43,78,.11);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.tool-card{position:relative;overflow:hidden;padding:28px}.tool-card::before{content:"";position:absolute;left:0;right:0;top:0;height:8px;background:var(--yellow)}.tool-card:nth-child(2)::before{background:var(--blue)}.tool-card:nth-child(3)::before{background:var(--coral)}.tool-card:nth-child(4)::before{background:var(--sage)}
.tool-card h3,.resource-card h3,.video-card h3{margin:13px 0 8px;color:var(--navy-950);font-size:1.55rem;letter-spacing:-.025em}.tool-card>p,.resource-card p,.video-card p{margin:0;color:var(--muted)}
.resource-card,.video-card{padding:24px}
.resource-meta{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px}
.tag{display:inline-flex;border-radius:999px;padding:6px 9px;background:var(--blue-soft);color:var(--navy-800);font-size:.65rem;font-weight:900;letter-spacing:.05em;text-transform:uppercase}.tag.gold{background:var(--yellow-soft)}.tag.green{background:var(--sage-soft);color:var(--success)}.tag.coral{background:var(--coral-soft)}
.game-area{margin-top:22px;border-radius:18px;padding:20px;background:#f5f2eb;border:1px solid #e8e0d3}
.game-row{display:flex;flex-wrap:wrap;align-items:center;gap:9px}.game-row+.game-row{margin-top:12px}
.game-label{display:block;margin-bottom:7px;color:var(--navy-900);font-size:.72rem;font-weight:900;letter-spacing:.07em;text-transform:uppercase}
.game-input,.game-select{min-height:44px;border:1px solid #c8c0b4;border-radius:11px;padding:9px 11px;background:#fff}.game-input{width:110px}
.problem-display{min-height:88px;display:grid;place-items:center;margin:14px 0;border-radius:15px;background:#fff;color:var(--navy-950);font-size:2.55rem;font-weight:900;font-variant-numeric:tabular-nums;box-shadow:inset 0 0 0 1px rgba(16,43,78,.08)}
.game-feedback{min-height:28px;margin-top:12px;font-weight:800}.game-feedback.good{color:var(--success)}.game-feedback.bad{color:var(--danger)}
.scoreline{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;color:var(--muted);font-size:.82rem;font-weight:800}
.hint-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:30px;align-items:start}
.hint-nav{position:sticky;top:98px;border-radius:20px;padding:18px;background:var(--navy-900);color:#fff;box-shadow:var(--shadow-sm)}
.hint-nav strong{display:block;margin:2px 8px 10px}.hint-nav a{display:block;border-radius:10px;padding:9px;color:rgba(255,255,255,.74);text-decoration:none;font-size:.82rem;font-weight:750}.hint-nav a:hover{background:rgba(255,255,255,.09);color:#fff}
.hint-stack{display:grid;gap:16px}.hint-card{overflow:hidden;border:1px solid rgba(16,43,78,.12);border-radius:20px;background:#fff;box-shadow:var(--shadow-sm)}
.hint-card summary{list-style:none;cursor:pointer;padding:22px 24px;color:var(--navy-950);font-size:1.13rem;font-weight:900}.hint-card summary::-webkit-details-marker{display:none}.hint-card summary::after{content:"+";float:right;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:var(--yellow-soft);color:var(--navy-900)}.hint-card[open] summary::after{content:"−"}
.hint-content{padding:0 24px 26px}.hint-content h4{margin:20px 0 7px;color:var(--navy-800)}
.example-box,.mistake-box,.check-box{margin-top:14px;border-radius:14px;padding:16px 18px}.example-box{background:var(--blue-soft);border-left:5px solid var(--blue)}.mistake-box{background:#fff0dc;border-left:5px solid #d58d35}.check-box{background:var(--sage-soft);border-left:5px solid var(--sage)}.math-line{font-size:1.15rem;font-weight:900;font-variant-numeric:tabular-nums}
.video-empty{display:grid;grid-template-columns:.75fr 1.25fr;gap:36px;align-items:center;border-radius:30px;padding:36px;background:var(--coral-soft)}
.film-illustration{position:relative;min-height:250px;border-radius:24px;background:var(--navy-900);overflow:hidden}.film-illustration::before,.film-illustration::after{content:"";position:absolute;left:18px;right:18px;height:18px;background:repeating-linear-gradient(90deg,#fff 0 18px,transparent 18px 35px)}.film-illustration::before{top:18px}.film-illustration::after{bottom:18px}.play-disc{position:absolute;inset:0;margin:auto;width:96px;height:96px;border-radius:50%;display:grid;place-items:center;background:var(--yellow);color:var(--navy-900);font-size:2.2rem;font-weight:900}
.collection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.collection-card{border-radius:22px;padding:24px;background:#fff;border:1px solid rgba(16,43,78,.11)}.collection-card:nth-child(2){background:var(--blue-soft)}.collection-card:nth-child(3){background:var(--yellow-soft)}.collection-card:nth-child(4){background:var(--sage-soft)}.collection-card:nth-child(5){background:var(--purple-soft)}.collection-card:nth-child(6){background:var(--coral-soft)}.collection-card strong{display:block;color:var(--navy-900);font-size:1.1rem}.collection-card span{display:block;margin-top:5px;color:var(--muted);font-size:.86rem}
.about-grid{display:grid;grid-template-columns:360px minmax(0,1fr);gap:50px;align-items:start}.profile-card{position:sticky;top:98px;border-radius:30px;overflow:hidden;background:var(--navy-900);color:#fff;box-shadow:var(--shadow)}
.profile-mark{position:relative;min-height:300px;display:grid;place-items:center;overflow:hidden;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:30px 30px}.profile-mark::after{content:"";position:absolute;width:170px;height:170px;border:38px solid rgba(242,189,61,.18);border-radius:50%}.profile-mark img{position:relative;z-index:2;width:100%;height:300px;display:block;object-fit:cover;object-position:center 18%;filter:drop-shadow(0 16px 22px rgba(0,0,0,.28))}
.profile-card-body{padding:26px}.profile-card h2{margin:0;font-size:2rem;line-height:1}.profile-card p{color:rgba(255,255,255,.7)}.credentials{display:grid;gap:12px;margin-top:20px}.credential{border-top:1px solid rgba(255,255,255,.13);padding-top:12px}.credential span{display:block;color:var(--yellow);font-size:.67rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.credential strong{font-size:.91rem}
.prose{max-width:790px}.prose h2{margin:0 0 16px;color:var(--navy-950);font-size:2.7rem;line-height:1;letter-spacing:-.045em}.prose h3{margin:32px 0 9px;color:var(--navy-800);font-size:1.28rem}.prose p{margin:0 0 17px}.quote{margin:28px 0;border-radius:20px;padding:25px;background:var(--yellow-soft);color:var(--navy-900);font-size:1.25rem;font-weight:800;line-height:1.45}
.site-footer{background:var(--navy-950);color:rgba(255,255,255,.68)}.footer-shell{width:min(var(--page-width),calc(100% - 36px));margin:auto;display:grid;grid-template-columns:1fr auto;gap:30px;padding:42px 0}.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:900}.footer-brand img{width:42px}.footer-brand span{display:block;color:var(--yellow);font-size:.67rem;letter-spacing:.1em}.footer-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:14px}.footer-links a{text-decoration:none;color:rgba(255,255,255,.72);font-size:.78rem;font-weight:750}.footer-links a:hover{color:#fff}.footer-note{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.1);padding-top:16px;font-size:.74rem}
.empty-state{border:2px dashed #cfc6b8;border-radius:20px;padding:30px;text-align:center;background:#fff}.empty-state h3{color:var(--navy-900)}
@media(max-width:1000px){.site-nav a{padding-inline:9px;font-size:.76rem}.hero-shell{grid-template-columns:1fr .82fr;gap:36px}.resource-tile.games,.resource-tile.about{grid-column:span 6}.resource-tile.hints,.resource-tile.videos{grid-column:span 6}.about-grid{grid-template-columns:1fr}.profile-card{position:static}.collection-grid,.card-grid.three{grid-template-columns:repeat(2,1fr)}}
@media(max-width:780px){.nav-shell{min-height:68px;flex-wrap:wrap;padding:10px 0}.nav-toggle{display:block}.site-nav{display:none;width:100%;flex-direction:column;align-items:stretch;padding:2px 0 10px}.site-nav.open{display:flex}.site-nav a{width:100%;padding:11px 12px}.hero-shell{min-height:auto;grid-template-columns:1fr;padding:58px 0}.math-board{min-height:390px;transform:none}.home-hero h1{font-size:4rem}.resource-tile.games,.resource-tile.about,.resource-tile.hints,.resource-tile.videos{grid-column:1/-1}.page-hero-shell{grid-template-columns:1fr;min-height:auto}.hero-symbols{display:none}.tool-grid,.card-grid,.card-grid.three,.collection-grid,.promise-strip{grid-template-columns:1fr}.hint-layout{grid-template-columns:1fr}.hint-nav{position:static}.video-empty{grid-template-columns:1fr}.footer-shell{grid-template-columns:1fr}.footer-links{justify-content:flex-start}}
@media(max-width:520px){.brand-text span{display:none}.home-hero h1,.page-hero h1{font-size:3.3rem}.section{padding:62px 0}.math-board{padding:22px}.board-equation{font-size:2.35rem}.board-notes{grid-template-columns:1fr}.resource-tile{min-height:255px;padding:24px}.tile-math{font-size:5rem}.tool-card,.resource-card,.video-card{padding:21px}.video-empty{padding:24px}.game-input{width:92px}}
@media print{.site-header,.hero-actions,.site-footer,.nav-toggle,.button{display:none!important}body{background:#fff}.section{padding:30px 0}.hint-card{break-inside:avoid;box-shadow:none}}


/* Classroom calculator */
.calculator-area{background:var(--navy-950);border-color:var(--navy-950)}
.calculator-shell{max-width:430px;margin:auto}
.calc-expression{min-height:25px;padding:0 4px 5px;color:rgba(255,255,255,.58);font-size:.8rem;font-weight:750;text-align:right;overflow-wrap:anywhere}
.calc-display{width:100%;min-height:76px;display:flex;align-items:center;justify-content:flex-end;overflow:hidden;border:1px solid rgba(255,255,255,.13);border-radius:16px;padding:10px 16px;background:#fff;color:var(--navy-950);font-size:clamp(2rem,5vw,3.2rem);font-weight:900;line-height:1;font-variant-numeric:tabular-nums;box-shadow:inset 0 0 0 1px rgba(16,43,78,.05)}
.calculator-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:12px}
.calc-key{min-height:52px;border:0;border-radius:13px;background:#fff;color:var(--navy-950);font-size:1.08rem;font-weight:900;box-shadow:0 5px 0 rgba(0,0,0,.16);transition:transform .08s ease,box-shadow .08s ease,background .15s ease}
.calc-key:hover{background:#f5f2eb}.calc-key:active{transform:translateY(3px);box-shadow:0 2px 0 rgba(0,0,0,.16)}
.calc-key.operator{background:var(--yellow);color:var(--navy-950)}.calc-key.utility{background:var(--blue-soft);color:var(--navy-900)}.calc-key.equals{background:var(--coral);color:#fff}
.calculator-note{margin:13px 2px 0;color:rgba(255,255,255,.55);font-size:.72rem;text-align:center}
/* Fraction Match */
.fraction-stage{display:grid;grid-template-columns:minmax(150px,1fr) minmax(120px,.55fr);grid-template-areas:"instruction instruction" "model target";gap:13px;align-items:center;margin:15px 0}
.fraction-instruction{grid-area:instruction;color:var(--navy-900);font-size:.92rem;font-weight:900;text-align:center}
.fraction-model{grid-area:model;display:grid;grid-template-columns:repeat(var(--fraction-parts,4),1fr);height:82px;overflow:hidden;border:3px solid var(--navy-900);border-radius:14px;background:#fff;box-shadow:0 8px 18px rgba(16,43,78,.09)}
.fraction-piece{border-right:2px solid var(--navy-900);background:#fff}.fraction-piece:last-child{border-right:0}.fraction-piece.shaded{background:var(--yellow)}
.fraction-target{grid-area:target;min-height:82px;display:grid;place-items:center;border-radius:14px;background:var(--navy-900);color:#fff;font-size:2rem;font-weight:900}
.fraction-stack{display:inline-grid;grid-template-rows:auto auto;min-width:1.35em;text-align:center;line-height:1}.fraction-stack span:first-child{border-bottom:.09em solid currentColor;padding:0 .13em .08em}.fraction-stack span:last-child{padding:.08em .13em 0}
.fraction-choices{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:15px 0}
.fraction-choice{min-height:62px;border:2px solid #cfc6b8;border-radius:14px;background:#fff;color:var(--navy-900);font-size:1.35rem;font-weight:900;transition:transform .15s ease,border-color .15s ease,background .15s ease}
.fraction-choice:hover:not(:disabled){transform:translateY(-2px);border-color:var(--navy-700);background:var(--blue-soft)}
.fraction-choice.correct{border-color:var(--success);background:var(--sage-soft);color:var(--success)}.fraction-choice.wrong{border-color:var(--danger);background:var(--coral-soft);color:var(--danger)}.fraction-choice:disabled{cursor:default;opacity:1}
@media(max-width:520px){.fraction-stage{grid-template-columns:1fr;grid-template-areas:"instruction" "model" "target"}.fraction-target{min-height:64px}.fraction-model{height:70px}.calculator-grid{gap:7px}.calc-key{min-height:48px}}

/* Multiplication Munch card. */
.munch-card{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) 190px;align-items:center;gap:28px;background:linear-gradient(135deg,#fff 0%,#fff8df 100%)}
.munch-card::before{background:var(--yellow)!important}.munch-card h3{font-size:clamp(2rem,4vw,3.2rem)}
.munch-avatar{width:180px;max-height:220px;object-fit:contain;justify-self:end;filter:drop-shadow(0 14px 18px rgba(16,43,78,.18))}
.munch-privacy{margin:14px 0 0;color:var(--muted);font-size:.78rem}
@media(max-width:680px){.munch-card{grid-template-columns:1fr}.munch-avatar{width:145px;justify-self:center;order:-1}}


/* Knight Math Defender featured card */
.knight-card{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) 260px;align-items:center;gap:30px;overflow:hidden;background:linear-gradient(135deg,#111319 0%,#20242c 58%,#3b0d12 100%);color:#fff}
.knight-card::before{background:#c4121c!important}
.knight-card h3{color:#fff;font-size:clamp(2rem,4vw,3.25rem)}
.knight-card p{color:rgba(255,255,255,.78)}
.knight-card .tag.coral{background:#c4121c;color:#fff}
.knight-card .tag.green{background:#e8edf0;color:#111319}
.knight-button{background:#c4121c;color:#fff;box-shadow:0 8px 20px rgba(196,18,28,.28)}
.knight-button:hover{background:#e11d2a;color:#fff}
.knight-card-art{width:250px;max-height:310px;object-fit:contain;justify-self:end;filter:drop-shadow(0 18px 20px rgba(0,0,0,.42))}
.knight-privacy{margin:14px 0 0!important;color:rgba(255,255,255,.58)!important;font-size:.78rem}
@media(max-width:720px){.knight-card{grid-template-columns:1fr}.knight-card-art{width:190px;max-height:230px;justify-self:center;order:-1}}


/* Knight Percent Bingo feature card */
.bingo-card{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) 330px;align-items:center;gap:30px;background:linear-gradient(135deg,#f7f8fa 0%,#eceff3 56%,#ead2d4 100%)}
.bingo-card::before{background:#b51520!important}.bingo-card h3{font-size:clamp(2rem,4vw,3.1rem)}
.bingo-button{background:#a7111c;color:#fff;border-color:#a7111c}.bingo-button:hover{background:#790b13;transform:translateY(-2px)}
.bingo-privacy{margin:13px 0 0!important;font-size:.75rem;color:#687180!important}
.bingo-card-art{position:relative;min-height:245px;display:grid;place-items:center}.bingo-card-art img{position:absolute;right:-18px;bottom:-63px;width:178px;height:270px;object-fit:contain;filter:drop-shadow(0 15px 18px rgba(0,0,0,.28))}
.mini-bingo-grid{width:205px;display:grid;grid-template-columns:repeat(5,1fr);gap:5px;transform:rotate(-4deg) translateX(-45px);filter:drop-shadow(0 12px 16px rgba(16,19,25,.2))}.mini-bingo-grid i{aspect-ratio:1;border-radius:5px;background:linear-gradient(145deg,#fff,#cbd0d7);border:1px solid #8e96a1}.mini-bingo-grid i:nth-child(3n){background:linear-gradient(145deg,#c21b27,#7e0d15)}.mini-bingo-grid i:nth-child(13){background:#222833;box-shadow:inset 0 0 0 3px #ddb04f}
@media(max-width:720px){.bingo-card{grid-template-columns:1fr}.bingo-card-art{min-height:190px;order:-1}.bingo-card-art img{width:135px;height:205px;right:8%;bottom:-48px}.mini-bingo-grid{width:165px;transform:rotate(-4deg) translateX(-35px)}}


/* Knight Castle: Integer Quest feature card */
.castle-quest-card{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) 340px;align-items:center;gap:30px;overflow:hidden;background:linear-gradient(135deg,#fffaf1 0%,#f3e3d3 48%,#d9b29d 100%)}
.castle-quest-card::before{background:#7b2637!important}.castle-quest-card h3{font-size:clamp(2rem,4vw,3.15rem)}
.castle-quest-button{background:#6d1f30;color:#fff;border-color:#6d1f30;box-shadow:0 8px 20px rgba(91,23,36,.22)}.castle-quest-button:hover{background:#501522;color:#fff}
.castle-quest-privacy{margin:13px 0 0!important;font-size:.76rem;color:#6a5b59!important}
.castle-card-art{position:relative;min-height:270px;align-self:stretch;overflow:hidden;border-radius:22px;background:linear-gradient(#b8d8e8 0 55%,#d8caa8 55% 100%);box-shadow:inset 0 0 0 1px rgba(91,23,36,.12)}
.castle-card-art::before{content:"";position:absolute;width:112px;height:112px;right:24px;top:22px;border-radius:50%;background:#f6cf62;box-shadow:0 0 0 14px rgba(246,207,98,.18)}
.castle-cloud{position:absolute;width:86px;height:24px;border-radius:999px;background:rgba(255,255,255,.78)}.castle-cloud::before,.castle-cloud::after{content:"";position:absolute;border-radius:50%;background:inherit}.castle-cloud::before{width:34px;height:34px;left:13px;bottom:3px}.castle-cloud::after{width:43px;height:43px;right:12px;bottom:1px}.cloud-one{left:24px;top:38px}.cloud-two{right:44px;top:92px;transform:scale(.72)}
.castle-silhouette{position:absolute;left:50%;bottom:42px;width:250px;height:156px;transform:translateX(-50%);filter:drop-shadow(0 13px 10px rgba(72,35,31,.24))}.castle-silhouette i{position:absolute;display:block;background:repeating-linear-gradient(0deg,#9f5847 0 17px,#c78168 17px 20px);border:4px solid #6a332e}.castle-silhouette .tower{bottom:0;width:65px;height:122px}.castle-silhouette .tower::before,.castle-silhouette .keep::before{content:"";position:absolute;left:-4px;right:-4px;top:-18px;height:20px;background:linear-gradient(90deg,#6a332e 0 18%,transparent 18% 30%,#6a332e 30% 48%,transparent 48% 60%,#6a332e 60% 78%,transparent 78% 82%,#6a332e 82% 100%)}.castle-silhouette .left{left:0}.castle-silhouette .right{right:0}.castle-silhouette .keep{left:55px;bottom:0;width:140px;height:150px}.castle-silhouette .gate{left:101px;bottom:-1px;width:48px;height:65px;border-radius:28px 28px 0 0;background:#302827;border-color:#6a332e;z-index:3}.castle-path{position:absolute;left:50%;bottom:-25px;width:105px;height:95px;transform:translateX(-50%) perspective(150px) rotateX(58deg);background:repeating-linear-gradient(90deg,#bca37f 0 16px,#dcc9a5 16px 19px);border:3px solid rgba(91,23,36,.18)}
@media(max-width:720px){.castle-quest-card{grid-template-columns:1fr}.castle-card-art{min-height:225px;order:-1}.castle-silhouette{transform:translateX(-50%) scale(.82);transform-origin:center bottom}}

/* Ratio Recipe Quest feature card */
.candy-quest-card{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) 285px;align-items:center;gap:30px;overflow:hidden;background:radial-gradient(circle at 85% 18%,rgba(255,255,255,.92) 0 5%,transparent 5.5%),linear-gradient(135deg,#fff4d7 0%,#ffe1ec 48%,#dff5fb 100%)}
.candy-quest-card::before{background:#7b275f!important}.candy-quest-card h3{font-size:clamp(2rem,4vw,3.15rem);color:#541747}
.candy-quest-button{background:#6a1f57;color:#fff;border-color:#6a1f57;box-shadow:0 8px 20px rgba(90,23,79,.23)}.candy-quest-button:hover{background:#4c123e;color:#fff}
.candy-quest-privacy{margin:13px 0 0!important;font-size:.76rem;color:#705a6d!important}
.candy-card-art{width:275px;max-height:330px;object-fit:contain;object-position:center;justify-self:end;filter:drop-shadow(0 17px 18px rgba(78,28,64,.23))}
@media(max-width:720px){.candy-quest-card{grid-template-columns:1fr}.candy-card-art{width:210px;max-height:250px;justify-self:center;order:-1}}


/* Games-only Math Lab deployment */
.games-only-site .nav-shell{justify-content:space-between}
.header-badge{display:inline-flex;align-items:center;min-height:36px;border:1px solid rgba(16,43,78,.14);border-radius:999px;padding:7px 12px;background:var(--yellow-soft);color:var(--navy-900);font-size:.69rem;font-weight:900;letter-spacing:.08em}
.games-only-site .page-hero{background-image:linear-gradient(rgba(16,43,78,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,43,78,.045) 1px,transparent 1px);background-size:34px 34px}
.games-only-site .tool-grid{align-items:stretch}
.games-only-site .site-footer .footer-shell{grid-template-columns:1fr}
.games-only-site .site-footer .footer-note{grid-column:1}
@media(max-width:600px){.header-badge{display:none}.games-only-site .nav-shell{justify-content:center}.games-only-site .brand-link{text-align:left}}