.flow{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));align-items:stretch;gap:10px}.flow article,.principle-grid article,.timeline article,.loop-grid article{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}.flow article{grid-column:span 1;display:flex;flex-direction:column}.flow i{align-self:center;color:var(--gold);font-size:24px;font-style:normal;font-weight:800}.flow span,.flow small{color:var(--muted)}.flow b{font-size:17px;margin:7px 0}.flow small{margin-top:auto}.model-rules{counter-reset:model;display:grid;grid-template-columns:1fr 1fr;gap:12px;list-style:none;padding:0;margin:22px 0}.model-rules li{position:relative;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 16px 16px 48px}.model-rules li:before{counter-increment:model;content:counter(model,decimal-leading-zero);position:absolute;left:15px;color:var(--gold);font-weight:800}.model-rules b,.model-rules span{display:block}.model-rules span{color:var(--muted);margin-top:4px}.principle-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.principle-grid i,.timeline i,.loop-grid i{color:var(--gold);font-style:normal;font-weight:800}.principle-grid h3,.timeline h3,.loop-grid h3{margin:6px 0}.principle-grid p,.timeline p{color:var(--muted);margin-bottom:0}.pits-table tbody tr:nth-child(4),.pits-table tbody tr:nth-child(5){background:color-mix(in srgb,var(--gold) 8%,var(--card))}.identity-fields{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.identity-fields b{width:100%}.identity-fields span{border:1px solid var(--line);border-radius:999px;background:var(--card);padding:6px 11px;color:var(--muted)}.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.acceptance,.formula{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--card)}.acceptance{border-left:4px solid var(--blue)}.acceptance p,.formula p{margin:5px 0;color:var(--muted)}.loop-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.loop-grid ul{padding-left:18px;margin-bottom:0;color:var(--muted)}.formula{display:grid;grid-template-columns:max-content 1fr;gap:8px 18px;align-items:center}.formula code{overflow:auto;padding:8px 10px;border-radius:7px;background:var(--bg);color:var(--ink)}.formula p{grid-column:1/-1}.side-toc nav a{font-variant-numeric:tabular-nums}
@media(max-width:1050px){.flow{grid-template-columns:1fr}.flow i{transform:rotate(90deg)}.principle-grid,.loop-grid{grid-template-columns:1fr 1fr}.timeline{grid-template-columns:repeat(3,1fr)}}
@media(max-width:650px){.model-rules,.principle-grid,.timeline,.loop-grid{grid-template-columns:1fr}.formula{grid-template-columns:1fr}.formula p{grid-column:auto}.pits-table th,.pits-table td{white-space:normal;min-width:110px}}