.stack-page{max-width:800px;margin:0 auto}.stack-page h2{font-family:var(--font-display);font-size:28px;font-weight:600;color:var(--dark);margin:56px 0 12px}.stack-page>h2:first-child{margin-top:0}.stack-page p{font-size:16px;color:var(--body-text);line-height:1.75;margin:12px 0}.stack-video{position:relative;width:100%;aspect-ratio:16/9;border:1px solid var(--card-border);border-radius:var(--radius);overflow:hidden;background:var(--dark);margin:20px 0}.stack-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.stack-cards{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:16px;gap:16px;margin:20px 0}.stack-card{border:1px solid var(--card-border);border-radius:var(--radius);padding:20px 22px;background:var(--white)}.stack-card-n{font-size:12px;letter-spacing:.12em;color:var(--blue);font-weight:600}.stack-card-title{font-family:var(--font-display);font-size:18px;font-weight:600;color:var(--dark);margin:6px 0 4px}.stack-card p{font-size:15px;margin:0;line-height:1.6}.stack-guide{margin-top:56px}.stack-machines{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:12px;gap:12px}.stack-machine{text-align:left;border:2px solid var(--card-border);border-radius:var(--radius);padding:18px 20px;background:var(--white);cursor:pointer;display:flex;flex-direction:column;gap:4px}.stack-machine.is-active{border-color:var(--blue);background:var(--tint)}.stack-machine-name{font-family:var(--font-display);font-size:20px;font-weight:600;color:var(--dark)}.stack-machine-needs{font-size:14px;color:var(--grey-mid)}.stack-prompt{border-radius:var(--radius-sm);overflow:hidden;background:var(--dark);margin:16px 0}.stack-prompt-head{display:flex;justify-content:space-between;align-items:center;padding:10px 16px 10px 24px;border-bottom:1px solid var(--dark-border);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--mint)}.stack-copy{border:1px solid var(--dark-border);border-radius:var(--radius-btn);background:var(--dark-card);color:var(--white);font-size:13px;padding:6px 14px;cursor:pointer}.stack-prompt pre{margin:0;padding:20px 24px;max-height:420px;overflow:auto}.stack-prompt code{color:var(--white);font-size:13px;line-height:1.7;white-space:pre-wrap}.stack-warn{border-left:4px solid var(--blue);background:var(--tint);border-radius:var(--radius-sm);padding:14px 18px;margin:16px 0;font-size:15px;color:var(--body-text);line-height:1.6}.stack-tracker{border:1px solid var(--card-border);border-radius:var(--radius);padding:24px;margin:20px 0;background:var(--white)}.stack-rail{list-style:none;padding:0;margin:0 0 20px;display:grid;grid-template-columns:repeat(11,1fr);grid-gap:6px;gap:6px}.stack-rail button{width:100%;border:0;cursor:pointer;height:32px;border-radius:var(--radius-sm);background:var(--tint);color:var(--grey-mid);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center}.stack-rail button:hover{outline:2px solid var(--blue)}.stack-rail button.is-done{background:var(--mint);color:var(--dark)}.stack-rail button.is-here{background:var(--blue);color:var(--white)}.stack-here-label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);font-weight:600}.stack-here-title{font-family:var(--font-display);font-size:22px;font-weight:600;color:var(--dark);margin:6px 0 16px;line-height:1.35}.stack-next{margin-bottom:12px}.stack-tracker-actions{display:flex;flex-wrap:wrap;gap:20px}.stack-link{background:none;border:0;padding:0;color:var(--blue);font-size:15px;cursor:pointer;text-decoration:underline}.stack-stuck{margin-top:20px;padding-top:20px;border-top:1px solid var(--card-border)}.stack-stuck-head{font-family:var(--font-display);font-size:18px;font-weight:600;color:var(--dark)}.stack-pt{background:var(--tint);border-radius:var(--radius-sm);padding:16px 18px;margin-top:12px}.stack-pt-sit{font-weight:600;color:var(--dark);font-size:15px}.stack-page .stack-pt-txt{font-size:15px;margin:6px 0 10px;line-height:1.6}.stack-pt .stack-copy{background:var(--dark)}.stack-tip{background:var(--tint);border-radius:var(--radius-sm);padding:14px 18px}.stack-map{display:block;border:1px solid var(--card-border);border-radius:var(--radius);overflow:hidden;margin:16px 0 8px}.stack-map img{display:block;width:100%;height:auto}.stack-page .stack-map-open{font-size:14px;margin:0}.stack-btn-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:28px}.stack-hero-note{margin-top:16px;font-size:15px;color:var(--grey-mid)}.stack-anchor{scroll-margin-top:100px}.stack-cards--3{grid-template-columns:repeat(3,1fr);margin:0 0 8px}.stack-ctas{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:16px;gap:16px;margin-top:64px}.stack-cta{padding:32px;border-radius:var(--radius);background:var(--tint);display:flex;flex-direction:column;align-items:flex-start}.stack-cta h2{margin-top:0;font-size:24px}.stack-cta .btn{margin-top:auto}.stack-cta--dark{background:var(--dark)}.stack-page .stack-cta--dark h2{color:var(--white)}.stack-page .stack-cta--dark p{color:var(--white);opacity:.8}.stack-page .stack-cta-sub{margin:12px 0 0;font-size:14px}.stack-cta-sub a{color:var(--mint)}@media (max-width:640px){.stack-cards,.stack-cards--3,.stack-ctas,.stack-machines{grid-template-columns:1fr}.stack-rail{grid-template-columns:repeat(6,1fr)}}