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li:before{aspect-ratio:1;background:var(--color-cyan);width:1.35rem;color:var(--color-ink);content:"✓";border-radius:50%;place-items:center;font-size:.75rem;font-weight:900;display:grid;position:absolute;top:1.1rem;left:1.1rem}.detail-meta{border:1px solid var(--color-line);border-radius:var(--radius-lg);background:var(--color-surface);align-self:start;padding:clamp(1.25rem,3vw,2rem)}.detail-meta dl{margin:0}.detail-meta dl>div{border-bottom:1px solid var(--color-line);padding-block:1rem}.detail-meta dl>div:first-child{padding-top:0}.detail-meta dl>div:last-child{border-bottom:0;padding-bottom:0}.detail-meta dt{color:var(--color-subtle);letter-spacing:.08em;margin-bottom:.3rem;font-size:.76rem;font-weight:800}.detail-meta dd{color:var(--color-heading);margin:0;font-weight:650}.screenshot-placeholder{min-height:19rem;padding:var(--space-5);border:1px dashed var(--color-line-strong);border-radius:var(--radius-lg);background:linear-gradient(135deg, #5ae5cd0d, #4e91ff0d), var(--color-surface);color:var(--color-subtle);text-align:center;place-items:center;display:grid}.screenshot-placeholder strong{color:var(--color-heading);margin-bottom:.25rem;display:block}.prose{max-width:48rem}.prose h2{margin-top:3.5rem;margin-bottom:1rem;font-size:clamp(1.6rem,3vw,2.15rem)}.prose h2:first-child{margin-top:0}.prose h3{margin-top:2rem}.prose p,.prose li{color:var(--color-muted)}.prose a{color:var(--color-accent);text-underline-offset:.2em;text-decoration:underline}.prose ul,.prose ol{padding-left:1.4rem}.callout{border-left:4px solid var(--color-cyan);border-radius:0 var(--radius-md) var(--radius-md) 0;background:var(--color-surface);margin-block:2rem;padding:1.25rem 1.4rem}.callout p:last-child{margin-bottom:0}.principle-grid{gap:var(--space-4);margin-top:var(--space-6);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.principle-card{border:1px solid var(--color-line);border-radius:var(--radius-lg);background:var(--color-surface);padding:clamp(1.4rem,3vw,2rem)}.principle-card__index{aspect-ratio:1;width:2.5rem;color:var(--color-cyan);background:#5ae5cd1f;border-radius:50%;place-items:center;margin-bottom:2rem;font-size:.76rem;font-weight:850;display:grid}.principle-card h2,.principle-card h3{margin-bottom:.65rem;font-size:1.35rem}.principle-card p{color:var(--color-muted);margin-bottom:0;font-size:.94rem}.not-found{text-align:center;place-items:center;min-height:80svh;padding-top:7rem;display:grid}.not-found__code{color:#0000;letter-spacing:-.08em;-webkit-text-stroke:1px #5ae5cd73;margin-bottom:0;font-size:clamp(6rem,22vw,14rem);font-weight:950;line-height:.85}.not-found h1{margin-bottom:var(--space-3);font-size:clamp(2rem,5vw,3.5rem)}.not-found p:not(.not-found__code){max-width:34rem;color:var(--color-muted);margin-inline:auto}.site-footer{border-top:1px solid var(--color-line);background:#061019}.site-footer__inner{align-items:end;gap:var(--space-5);grid-template-columns:1fr auto;padding-block:3.5rem;display:grid}.site-footer__brand{color:var(--color-heading);margin-bottom:.2rem;font-size:1.1rem;font-weight:800}.site-footer__inner>div p:last-child,.site-footer__copyright{color:var(--color-subtle);margin-bottom:0;font-size:.86rem}.site-footer nav{justify-content:end;gap:var(--space-4);flex-wrap:wrap;font-size:.9rem;font-weight:650;display:flex}.site-footer nav a{min-height:2.75rem;color:var(--color-muted);align-items:center;display:inline-flex}.site-footer nav a:hover{color:var(--color-heading)}.site-footer__copyright{padding-top:var(--space-4);border-top:1px solid var(--color-line);grid-column:1/-1}@media (width<=1024px){.game-grid,.principle-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.game-grid .game-card:last-child,.principle-grid .principle-card:last-child{grid-column:1/-1}.topics-grid{gap:.8rem}.learning-cta{grid-template-columns:1fr}}@media (width<=768px){.desktop-nav{display:none}.mobile-nav{display:block}.home-hero{min-height:48rem}.home-hero__shade,.detail-hero__overlay{background:linear-gradient(0deg, var(--color-bg) 0%, #040c14e0 54%, #040c1433 100%)}.home-hero__content{padding-top:19rem;padding-bottom:4.5rem}.game-visual--hero .game-visual__orb--one{width:65vw;top:10%;right:3%}.game-visual--hero .game-visual__orb--two{width:18vw;top:19%;right:25%}.game-visual--hero .game-visual__lens{width:43vw;top:13%;right:15%}.hero-scroll{display:none}.section-heading{display:block}.section-heading .text-link{margin-top:1rem}.topics-grid,.detail-grid{grid-template-columns:1fr}.topic-card{min-height:12rem}.topic-card__number{margin-bottom:2.2rem}.detail-hero{min-height:46rem}.detail-hero__content{padding-top:18rem;padding-bottom:4rem}.detail-hero .game-visual--detail .game-visual__orb--one{width:62vw;top:8%;right:5%}.detail-hero .game-visual--detail .game-visual__lens,.detail-hero .game-visual--detail .game-visual__signal{width:38vw;top:12%;right:18%}.detail-hero .game-visual--detail .game-visual__numbers{top:14%;right:10%}.site-footer__inner{grid-template-columns:1fr;align-items:start}.site-footer nav{justify-content:start}}@media (width<=560px){.game-grid,.principle-grid{grid-template-columns:1fr}.game-grid .game-card:last-child,.principle-grid .principle-card:last-child{grid-column:auto}.game-card__body p{min-height:auto}.button-row{align-items:stretch}.button-row .button{flex:100%}.home-hero__content h1{max-width:none}.page-hero:after{width:20rem}.filter-bar{margin-inline:calc(-1 * var(--space-page));padding:.25rem var(--space-page) .75rem;scrollbar-width:none;flex-wrap:nowrap;overflow-x:auto}.filter-chip{flex:none}.site-footer nav{gap:.2rem;display:grid}}@media 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