:root{color-scheme:dark;--bg:#151a18;--surface:#202723;--surface-hover:#29332c;--text:#f1f3eb;--muted:#b4c0b8;--line:#354039;--accent:#c8e79b;--ink:#192215;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:100%;line-height:1.6}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}
a{color:inherit;text-underline-offset:.22em}
a:hover{color:var(--accent)}
:focus-visible{outline:.18rem solid var(--accent);outline-offset:.3rem}
::selection{background:var(--accent);color:var(--ink)}
.wrap{width:min(100% - 4rem,76rem);margin-inline:auto}
.skip{position:absolute;top:1rem;left:1rem;padding:.75rem 1rem;background:var(--accent);color:var(--ink);z-index:10;transform:translateY(-200%)}
.skip:focus{transform:translateY(0)}
.site-header{border-bottom:1px solid var(--line)}
.header-inner{min-height:6rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:1rem}
.wordmark{font-size:1.65rem;font-weight:800;letter-spacing:-.065em;text-decoration:none;white-space:nowrap;display:inline-flex;align-items:center;min-height:2.75rem}
.wordmark span{color:var(--accent)}
.header-link{font-size:.9375rem;text-decoration:none;display:inline-flex;align-items:center;min-height:2.75rem}
main{flex:1}
.intro{padding-block:3rem 2.25rem;max-width:46rem}
.eyebrow{font-size:.875rem;letter-spacing:.075em;text-transform:uppercase;font-weight:650;color:var(--muted);margin:0 0 1.1rem}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(2.25rem,4.5vw,3.85rem);line-height:1.08;letter-spacing:-.055em;margin-bottom:0;font-weight:760;text-wrap:balance}
h1 em{font-style:normal;color:var(--accent)}
.subject-nav{display:flex;flex-wrap:wrap;gap:.5rem;padding-top:1rem}
.subject-nav a{padding:.5rem .75rem}
.selection{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:1rem;align-items:center;padding-block:1.25rem}
.grade-nav{display:flex;gap:.5rem;flex-wrap:wrap}
.grade-nav a{display:inline-flex;justify-content:center;align-items:center;min-height:2.9rem;padding:.6rem 1.15rem;background:var(--surface);border:1px solid transparent;border-radius:.4rem;font-weight:700;text-decoration:none;font-size:.9375rem}
.grade-nav a:hover{border-color:var(--accent)}
.grade-nav a[aria-current=page]{background:var(--accent);color:var(--ink)}
.catalogue-status{font-size:.875rem;color:var(--muted);margin:0;text-align:right}
.group{display:grid;grid-template-columns:13.5rem minmax(0,1fr);gap:1.8rem;padding-block:1.4rem;border-bottom:1px solid var(--line)}
.group:last-child{border-bottom:0}
.group h2{font-size:1rem;line-height:1.5;display:flex;align-items:baseline;gap:.8rem;margin:0;padding-top:.65rem;font-weight:650}
.group-number{color:var(--accent);font-size:.875rem;font-weight:450;font-variant-numeric:tabular-nums}
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem;list-style:none;padding:0;margin:0}
.topic-grid li:only-child{grid-column:1/-1}
.topic-grid li{display:flex;min-width:0}
.topic-card{width:100%;display:flex;flex-direction:column;gap:.8rem;min-height:10.8rem;border-radius:.75rem;padding:1.2rem 1.25rem;background:var(--surface);border:1px solid transparent;text-decoration:none;transition:background .15s,border-color .15s}
.topic-card:hover{background:var(--surface-hover);border-color:#6b8059;color:var(--text)}
.topic-card h3{font-size:1rem;line-height:1.45;margin:0;font-weight:650;overflow-wrap:anywhere}
.topic-card p{color:var(--muted);font-size:.9375rem;line-height:1.55;margin:0 0 .9rem}
.card-action{display:flex;align-items:center;justify-content:space-between;gap:1rem;color:var(--accent);font-size:.875rem;font-weight:650;margin-top:auto}
.card-arrow{font-size:1.2rem;line-height:1}
.site-footer{margin-top:auto;border-top:1px solid var(--line);padding:24px 0 32px}
.footer-inner{display:block}
.footer-nav{display:flex;flex-wrap:wrap;justify-content:flex-start;gap:4px 22px}
.footer-nav a{display:inline-flex;align-items:center;min-height:44px;font:0.875rem/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;text-decoration:underline;text-underline-offset:4px}
.back{margin-top:1.6rem}
.header-link,.back,.subject-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;max-width:100%;padding:12px 18px;border:1px solid #819776;border-radius:7px;background:var(--surface);color:var(--accent);font-size:.9375rem;font-weight:650;line-height:1.4;text-decoration:none}
.header-link:hover,.back:hover,.subject-nav a:hover{background:var(--surface-hover);border-color:var(--accent)}
.topic-heading{padding-block:2rem 2.75rem;max-width:59rem}
.topic-heading h1{font-size:clamp(2rem,4vw,3.35rem);line-height:1.14;overflow-wrap:anywhere}
.topic-heading .lead{font-size:1.15rem;margin:1.25rem 0 0;color:var(--muted);max-width:45rem}
.coming-soon{border-top:1px solid var(--line);padding-block:1.5rem;max-width:59rem;margin-bottom:3rem;color:var(--muted)}
.text-page{max-width:49rem;padding-block:2.75rem 3rem}
.text-page h1{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:1.5rem}
.text-page h2{font-size:1.35rem;line-height:1.4;margin:2.4rem 0 .8rem;letter-spacing:-.015em}
.text-page h3{font-size:1.1rem;margin:1.5rem 0 .6rem}
.text-page p,.text-page li{color:var(--muted)}
.text-page strong{color:var(--text);font-weight:650}
.text-page a{color:var(--accent);overflow-wrap:anywhere}
.text-page ul{padding-left:1.25rem}
.text-page li{padding-left:.25rem;margin-bottom:.45rem}
.text-page address{font-style:normal;line-height:1.8;margin-bottom:1rem}
.notice{background:var(--surface);padding:1.2rem 1.4rem;border-left:.2rem solid var(--accent);border-radius:0 .5rem .5rem 0;margin:1.5rem 0}
.notice p:last-child{margin-bottom:0}
.stand{font-size:.875rem;color:var(--muted)}
.game-list{max-width:59rem;margin-bottom:3rem}
.section-nav{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding-block:20px;border-bottom:1px solid var(--line)}.section-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 18px;border:1px solid var(--accent);border-radius:7px;background:var(--accent);color:var(--ink);font-size:.9375rem;font-weight:650;text-decoration:none}.section-nav a:hover{background:#d9edbb;color:var(--ink)}.section-nav a.secondary{background:var(--surface);color:var(--accent);border-color:#819776}.section-nav a.secondary:hover{background:var(--surface-hover)}.topic-card.unavailable{background:#202321;border-color:#303632;cursor:default}.topic-card.unavailable h3,.topic-card.unavailable p,.topic-card.unavailable .card-action{color:#a4aaa6}.topic-card.unavailable:hover{background:#202321;border-color:#303632}
@media(min-width:70rem){.topic-grid li:only-child .topic-card{min-height:8rem}}
@media(max-width:54rem){.group{grid-template-columns:1fr;gap:1rem}.group h2{padding-top:0}}
@media(max-width:40rem){.wrap{width:calc(100% - 2rem)}.header-inner{min-height:5rem}.wordmark{font-size:1.45rem}.header-link{font-size:.875rem}.intro{padding-block:2rem 1.7rem}.eyebrow{font-size:.875rem;letter-spacing:.03em}.selection{align-items:start;flex-direction:column;gap:.85rem}.catalogue-status{text-align:left}.topic-grid{grid-template-columns:1fr}.topic-card{min-height:10rem}.topic-heading{padding-block:1.5rem 2rem}.site-footer{margin-top:1.5rem}.footer-inner{align-items:start;flex-direction:column}.text-page{padding-top:2rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.game-preview{display:grid;grid-template-columns:114px minmax(0,1fr);gap:16px;align-items:center;box-sizing:border-box;width:100%;height:160px;flex-shrink:0;padding:16px;background:#19293c;color:#72d1f3;font:0.8125rem/1.5 Consolas,monospace;margin-bottom:18px;border:1px solid #425b70}.preview-bot{font-size:1.5625rem;line-height:.75;text-align:center;color:#ffcd72}.game-meta{font-size:0.875rem;color:#c8e79b}.pdf-material{border:1px solid #52695b;padding:18px;margin:24px 0}.pdf-material .teaching-actions{margin-bottom:14px}

.preview-key-art{display:grid;grid-template-columns:repeat(3,34px);gap:6px}.preview-key-art span{display:grid;place-items:center;min-height:37px;border:1px solid #a9c8ff;border-bottom:4px solid #485c7b;background:#263e70;color:#f1f5fc;font-size:1.25rem;border-radius:4px}.preview-keyboard{background:#1c2943;border-color:#485c7b;color:#a9c8ff}.preview-key-art span:nth-child(2){color:#ffcc8c}.game-preview>span:last-child{min-width:0;overflow-wrap:anywhere}@media(max-width:40rem){.game-preview{grid-template-columns:1fr;grid-template-rows:60px auto;gap:8px;padding:12px;text-align:center}.preview-key-art{justify-self:center}}

.section-nav .back{margin:0;font-size:0.9375rem;line-height:1.4}.site-footer{margin-top:auto}

/* Shrinking grid tracks and wrapping text keep zoomed content within the page. */
h1,h2,h3,p,li,address{overflow-wrap:anywhere}
.group{grid-template-columns:13.5rem minmax(0,1fr)}.group>*{min-width:0}
.group h2{display:block}.group-number{margin-right:.8rem}
.header-nav{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}
.header-nav [aria-current=page]{border-color:var(--line);color:var(--muted)}
.intro-guide{color:var(--muted);font-size:1.0625rem;max-width:38rem;margin:1.4rem 0 0}
.quick-start{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem 1.25rem;padding:1rem 1.25rem;margin:0 0 1.5rem;border:1px solid #708866;border-radius:.75rem;background:#233025}
.quick-start strong{color:var(--accent);font-size:.875rem}.quick-start a{display:block;min-width:0;max-width:100%;min-height:44px;align-content:center;font-weight:650;overflow-wrap:anywhere}
.game-preview{height:auto;min-height:160px}.game-list .topic-card{border-color:var(--line)}
.section-nav a,.header-link,.teaching-button{max-width:100%;overflow-wrap:anywhere}
@media(max-width:54rem){.group{grid-template-columns:minmax(0,1fr)}}
@media(max-width:40rem){.wrap{width:calc(100% - 2rem)}.header-nav{gap:.5rem}.header-link{padding:.65rem .85rem}.game-preview{grid-template-rows:auto auto}.topic-card{padding:1rem}.section-nav a{padding:.75rem 1rem}}

.game-list .device-requirements{padding:1rem;border-left:3px solid var(--accent);border-radius:.35rem;background:#233025;color:#f0f4ee;font-size:1rem;line-height:1.6}