/* Architectural depth using the site's existing light/dark palette. */
.pg-directory,.pg-timeline{position:relative;background:radial-gradient(ellipse at 95% 0%,#8faeba18,transparent 60%),var(--soft)}
.pg-lead{max-width:68ch;color:var(--muted);font-size:1.08rem;line-height:1.75}
.pg-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-block:32px}
.pg-card{position:relative;isolation:isolate;display:flex;flex-direction:column;align-items:flex-start;gap:15px;min-width:0;padding:32px;border:1px solid var(--line);border-top:3px solid var(--gold,var(--blue));border-radius:18px;background:var(--card);box-shadow:0 12px 30px #1028400b;color:var(--ink);text-decoration:none;overflow:hidden;transition:transform .18s,box-shadow .18s}
.pg-card::after{content:'';position:absolute;z-index:-1;right:-36px;bottom:-60px;width:160px;height:160px;border:1px solid var(--line);transform:rotate(35deg);border-radius:20px}
.pg-number{font-size:.85rem;font-weight:700;color:var(--muted);border:1px solid var(--line);border-radius:50%;width:38px;height:38px;display:grid;place-items:center}
.pg-card h3{font-size:1.45rem;line-height:1.3;margin:0}.pg-card p{line-height:1.7;margin:0;color:var(--muted)}.pg-card .card-link{margin-top:auto;padding-top:16px}.pg-card .kicker{margin:0}
.pg-card:hover{transform:translateY(-3px);box-shadow:0 18px 38px #10284016}.pg-card:focus-visible,.pg-timeline :is(a,button):focus-visible{outline:3px solid var(--blue);outline-offset:4px}
.pg-heading{display:flex;align-items:center;justify-content:space-between;gap:30px}.pg-heading>a{flex-shrink:0}.pg-scope{padding:20px 24px;border-left:3px solid var(--gold,var(--blue));background:var(--card);font-size:.9rem;line-height:1.75;margin:28px 0;color:var(--muted)}
.pg-layout{display:grid;grid-template-columns:minmax(230px,.8fr) minmax(0,2fr);gap:32px;align-items:start}.pg-layout>*{min-width:0}.pg-rail ol{list-style:none;padding:0;margin:0;display:grid;gap:9px}.pg-rail a{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:10px;padding:16px;background:var(--card);text-decoration:none;line-height:1.45;color:var(--ink);min-height:60px}.pg-rail a>span{font-variant-numeric:tabular-nums;font-weight:700;color:var(--muted)}.pg-rail a[aria-current=step]{border-color:var(--blue);box-shadow:inset 4px 0 var(--blue)}
.pg-tools{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;font-size:.85rem}.pg-tools p{margin:0}.pg-tools button{font:inherit;padding:10px 14px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);cursor:pointer;min-height:44px}
.pg-panel{position:relative;padding:clamp(24px,4vw,44px);margin:0 0 22px;border:1px solid var(--line);border-radius:20px;background:var(--card);box-shadow:0 16px 40px #10284010;scroll-margin-top:140px}.pg-panel h3{font-size:clamp(1.5rem,3vw,2rem);line-height:1.25;margin:12px 0 20px}.pg-panel p{line-height:1.8}.pg-explanation{font-size:1.07rem;max-width:66ch}.pg-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;border-block:1px solid var(--line);padding-block:24px;margin-block:24px}.pg-detail-grid h4{font-size:.95rem;margin:0}.pg-detail-grid p{font-size:.93rem;color:var(--muted);margin-bottom:0}.pg-checkpoint{padding:20px;border-radius:10px;background:var(--soft);border-left:3px solid var(--gold,var(--blue))}.pg-checkpoint p{margin:8px 0 0}.pg-source{font-size:.8rem;color:var(--muted);margin:24px 0 0;overflow-wrap:anywhere}.pg-controls{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}.pg-controls button:disabled{opacity:.4;cursor:default}.pg-sources{margin-top:32px;border:1px solid var(--line);border-radius:12px;padding:22px;background:var(--card);line-height:1.8}.pg-sources summary{cursor:pointer;font-weight:700;min-height:28px}.pg-sources p,.pg-sources li{font-size:.9rem;max-width:100ch}.pg-sources li{margin-block:10px}.pg-editorial{max-width:850px}.pg-editorial p{line-height:1.85}.pg-editorial h2{margin-top:36px}
.pg-timeline [hidden]{display:none!important}
@media(min-width:1100px){.pg-card:nth-last-child(-n+2){grid-column:span 1}.pg-rail{position:sticky;top:130px}}
@media(max-width:900px){.pg-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.pg-layout{grid-template-columns:1fr}.pg-rail ol{grid-template-columns:repeat(2,minmax(0,1fr))}.pg-heading{display:block}.pg-heading>a{display:inline-block;margin-top:12px}}
@media(max-width:560px){.pg-cards{grid-template-columns:1fr}.pg-card{padding:25px}.pg-detail-grid{grid-template-columns:1fr;gap:20px}.pg-rail a{padding:12px;font-size:.85rem;gap:8px;height:100%}.pg-tools{align-items:flex-start;flex-direction:column}.pg-controls .btn{flex:1;font-size:.85rem;padding:13px}.pg-scope{padding:16px}.pg-sources{padding:18px}}
@media(prefers-reduced-motion:reduce){.pg-card{transition:none}.pg-card:hover{transform:none}}
@media print{.pg-timeline [data-process-panel][hidden]{display:block!important}.pg-tools,.pg-controls,.pg-rail{display:none!important}.pg-layout,.pg-cards{display:block}.pg-panel,.pg-card{box-shadow:none;break-inside:avoid}.pg-panel{margin-block:16px}.pg-sources{display:block}.pg-sources::details-content{content-visibility:visible}}