.s1-guide-grid,.s1-story-grid,.s1-map-grid{display:grid;gap:1.25rem;grid-template-columns:repeat(3,minmax(0,1fr))}
.s1-guide-card,.s1-story-card,.s1-flow{border:1px solid var(--line);border-radius:1rem;background:var(--card);color:var(--ink)}
.s1-guide-card{padding:1.25rem}
.s1-guide-card-wide{grid-column:1/-1}
.s1-guide-card h3,.s1-story-card h3{font-size:1.15rem;font-weight:600;line-height:1.35}
.s1-guide-card p,.s1-story-copy p,.s1-flow p,.s1-map-grid p{font-size:.875rem;line-height:1.75;color:var(--muted)}
.s1-guide-card p{margin:.75rem 0}
.s1-links{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.s1-links a{padding:.65rem .85rem;border:1px solid var(--line);border-radius:.55rem;font-size:.8rem;font-weight:600;color:var(--accent);overflow-wrap:anywhere}
.s1-links a:hover{background:var(--accent-soft)}
.s1-guide-card a:focus-visible,.s1-guide-card summary:focus-visible,.s1-story-card a:focus-visible,.s1-story-card summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
#activity-system summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.s1-story-card{overflow:hidden;scroll-margin-top:120px}
.s1-story-card figure{margin:0}
.s1-story-photo{display:block;width:100%;height:200px;object-fit:contain;background:var(--accent-soft)}
.s1-story-credit{padding:.5rem 1.2rem;font-size:.65rem;line-height:1.6;color:var(--muted);border-bottom:1px solid var(--line)}
.s1-story-credit a,.s1-story-copy a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.s1-story-copy{padding:1.25rem}
.s1-story-kicker{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--accent);margin-bottom:.45rem}
.s1-story-copy>p{margin:.7rem 0}
.s1-story-copy summary{cursor:pointer;padding:.75rem 0;color:var(--accent);font-size:.875rem;font-weight:600}
.s1-story-copy details p{margin:.75rem 0}
.s1-story-copy details strong{color:var(--ink)}
.s1-story-question{border-top:1px solid var(--line);padding-top:.85rem}
.s1-flow{padding:1.25rem;margin-top:1.5rem}
.s1-flow h3{font-weight:600;font-size:1.15rem}
.s1-flow-steps{display:grid;gap:1rem;grid-template-columns:repeat(3,minmax(0,1fr));margin:1rem 0;list-style:none}
.s1-flow-node{border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:.65rem;padding:1rem;background:var(--paper)}
.s1-flow-node strong{display:block;font-size:.82rem;color:var(--ink);margin-bottom:.4rem}
.s1-flow-node p{font-size:.8rem;line-height:1.7;margin:0}
.s1-flow-wide{grid-column:1/-1;text-align:center;background:var(--accent-soft)}
.s1-flow-node[data-strand="emergent"]{border-top-color:#0d9488}
.s1-flow-node[data-strand="unrealized"]{border-top-color:#e11d48}
.s1-flow figcaption{font-size:.75rem;line-height:1.7;color:var(--muted)}
.s1-map-grid{margin:1rem 0}
.s1-map-grid>article{border-left:3px solid var(--accent);padding:1rem;background:var(--card);border-radius:.5rem}
.s1-map-grid h4{font-size:.95rem;font-weight:700;color:var(--ink)}
.s1-map-grid p{margin-top:.6rem;font-size:.8rem}
@media(max-width:900px){.s1-story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.s1-guide-card-wide .s1-map-grid{grid-template-columns:1fr}}
@media(max-width:640px){.s1-guide-grid,.s1-story-grid,.s1-map-grid,.s1-flow-steps{grid-template-columns:1fr}.s1-story-photo{height:190px}.s1-flow-wide{text-align:left}}
@media print{.s1-story-copy details{display:block}.s1-story-copy details>p{display:block}.s1-story-card,.s1-guide-card,.s1-flow-node{break-inside:avoid}.s1-story-photo{height:120px}}

/* Additive Mintzberg timeline stories, using the existing theme tokens. */
.s1tc{padding:3.5rem 1rem;border-top:1px solid var(--line);background:var(--paper);color:var(--ink)}
.s1tc-inner{max-width:1080px;margin:auto}
.s1tc h2{font-size:clamp(1.6rem,4vw,2.3rem);font-weight:700;line-height:1.25;margin:.6rem 0 1rem}
.s1tc h3{font-size:1.1rem;font-weight:650}
.s1tc p,.s1tc dd{font-size:.9rem;line-height:1.75;margin:.6rem 0;color:var(--muted)}
.s1tc-intro{max-width:80ch}
.s1tc-kicker{font-size:.72rem!important;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)!important}
.s1tc-guide,.s1tc-case{margin-top:1.25rem;padding:1.25rem;border:1px solid var(--line);border-radius:1rem;background:var(--card)}
.s1tc-guide{border-left:3px solid var(--accent)}
.s1tc-case{padding:0;scroll-margin-top:var(--sticky-offset,120px)}
.s1tc-case summary{padding:1.1rem 1.25rem;cursor:pointer;min-height:44px}
.s1tc-case summary::marker{color:var(--accent)}
.s1tc-case summary strong{font-size:1.1rem;line-height:1.45}
.s1tc-case summary>span,.s1tc-case summary>strong{display:block;margin:.2rem 0}
.s1tc-case summary>span:last-child{font-size:.85rem;line-height:1.6;color:var(--muted)}
.s1tc-case[open] summary{border-bottom:1px solid var(--line);background:var(--accent-soft);border-radius:1rem 1rem 0 0}
.s1tc-body{padding:.5rem 1.25rem 1.25rem}
.s1tc a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
.s1tc :is(a,summary,button):focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.s1tc-dates{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;list-style:none;margin:1rem 0;padding:0}
.s1tc-dates li{border-top:3px solid var(--accent);background:var(--accent-soft);border-radius:.6rem;padding:.8rem}
.s1tc-dates strong,.s1tc-dates span{display:block;font-size:.8rem;line-height:1.6}
.s1tc-dates span{color:var(--muted);margin-top:.25rem}
.s1tc-terms{margin:1rem 0}
.s1tc-terms>div{display:grid;grid-template-columns:10rem minmax(0,1fr);gap:.8rem;padding:.85rem 0;border-bottom:1px solid var(--line)}
.s1tc-terms dt{font-size:.85rem;font-weight:700;color:var(--ink)}
.s1tc-terms dd{margin:0}
.s1tc-terms [data-strand="emergent"] dt{color:var(--accent)}
.s1tc .s1tc-takeaway{padding:.9rem;border-left:3px solid var(--accent);background:var(--accent-soft)}
.s1tc .s1tc-sources{font-size:.78rem;line-height:1.7}
.s1tc-practice #timelineChecks{list-style:none;padding:0}
.s1tc-practice button{min-height:44px;white-space:normal}
@media(max-width:640px){.s1tc{padding:2.5rem .75rem}.s1tc-dates,.s1tc-terms>div{grid-template-columns:1fr}.s1tc-terms>div{gap:.3rem}.s1tc-guide,.s1tc-case summary{padding:1rem}.s1tc-body{padding:.4rem 1rem 1rem}}
@media print{.s1tc-case::details-content{content-visibility:visible}.s1tc{padding:1rem 0}.s1tc-practice{display:none}.s1tc-case summary{break-after:avoid}}