.stacks-stage{max-width:1240px;margin:0 auto;padding:var(--spacing-md) var(--spacing-md) 0}.stacks-frame{position:relative;border:1px solid var(--color-border-strong);background:#15171b;box-shadow:var(--shadow-lg)}.stacks-frame iframe{display:block;width:100%;height:860px;border:0;transition:height var(--transition-smooth)}.stacks-corner{position:absolute;width:26px;height:26px;pointer-events:none;z-index:1}.stacks-corner--tl{top:-9px;left:-9px;border-top:1px solid var(--color-primary);border-left:1px solid var(--color-primary)}.stacks-corner--br{bottom:-9px;right:-9px;border-bottom:1px solid var(--color-primary);border-right:1px solid var(--color-primary)}.stacks-state{position:absolute;inset:0;display:grid;place-content:center;gap:var(--spacing-sm);padding:var(--spacing-md);text-align:center;background:var(--color-surface);color:var(--color-text-secondary);font-family:var(--font-serif);font-size:1.1rem}.stacks-state[hidden]{display:none}.stacks-state p{margin:0}.stacks-state a{color:var(--color-primary)}.stacks-note{max-width:var(--content-width);margin:var(--spacing-sm) auto 0;text-align:center;color:var(--color-text-muted);font-family:var(--font-serif);font-size:1rem}.stacks-h2{font-family:var(--font-display);font-weight:var(--weight-light);font-size:clamp(1.8rem,3vw,2.4rem);color:var(--color-text-primary);text-align:center;margin:0 0 var(--spacing-md);letter-spacing:-.01em}.stacks-try{margin:var(--spacing-lg) auto 0;max-width:1080px}.stacks-try ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--color-border)}.stacks-try li+li{border-left:1px solid var(--color-border)}.stacks-try li{background:var(--color-surface);padding:var(--spacing-md)}.stacks-n{display:block;font-family:var(--font-mono);font-size:.8rem;letter-spacing:.2em;color:var(--color-primary);margin-bottom:var(--spacing-sm)}.stacks-n:before{content:"0"}.stacks-try p{margin:0;font-family:var(--font-serif);font-size:1.05rem;line-height:1.65;color:var(--color-text-secondary)}.stacks-try strong{color:var(--color-text-primary);font-weight:var(--weight-semibold)}.stacks-facts{margin:var(--spacing-xl) auto 0}.stacks-facts ul{margin:0;padding:0;list-style:none;display:grid;gap:var(--spacing-sm)}.stacks-facts li{position:relative;padding-left:1.6rem}.stacks-facts li:before{content:"";position:absolute;left:0;top:.8em;width:.6rem;height:1px;background:var(--color-primary)}.stacks-more{display:flex;flex-wrap:wrap;gap:var(--spacing-sm) var(--spacing-md);justify-content:center;margin:var(--spacing-lg) auto var(--spacing-xl);padding-top:var(--spacing-md);border-top:1px solid var(--color-border);max-width:var(--content-width)}.stacks-more a{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--color-primary);text-decoration:none;padding:.7rem 0;min-height:44px;display:inline-flex;align-items:center}.stacks-more a:hover,.stacks-more a:focus-visible{color:var(--color-primary-light)}@media(max-width:860px){.stacks-try ol{grid-template-columns:1fr}.stacks-try li+li{border-left:0;border-top:1px solid var(--color-border)}}@media(max-width:640px){.stacks-stage{padding:var(--spacing-sm) 0 0}.stacks-frame{border-left:0;border-right:0}.stacks-corner{display:none}}