.ec-crumbs { font-size: .88rem; color: var(--sage); margin: 0 0 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.ec-crumbs a { color: var(--sage); }
.sp-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 260px); gap: clamp(28px, 5vw, 64px); align-items: start; }
.sp-grid .post-body { max-width: 760px; min-width: 0; }
.sp-toc { position: sticky; top: 96px; max-height: calc(100vh - 120px); overflow: auto; background: var(--deep); border: 1px solid var(--line-strong); border-radius: 16px; padding: 18px 18px 14px; font-size: .9rem; }
.sp-toc h2 { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--sage); margin: 0 0 10px; }
.sp-toc ol { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 6px; }
.sp-toc a { color: var(--soft); text-decoration: none; line-height: 1.35; display: block; }
.sp-toc a:hover { color: var(--glow); }
.sp-toc .sp-toc-part { color: var(--mint); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; margin: 12px 0 6px; }
@media (max-width: 960px) { .sp-grid { grid-template-columns: minmax(0, 1fr); } .sp-toc { position: static; max-height: none; order: -1; } .sp-toc ol.sp-toc-list { grid-template-columns: 1fr 1fr; column-gap: 16px; } }
@media (max-width: 560px) { .sp-toc ol.sp-toc-list { grid-template-columns: 1fr; } }
.post-body h2.sp-part { margin-top: 64px; padding-top: 26px; border-top: 1px solid var(--line); color: var(--mint); font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; }
.post-body h2.sp-part + h3 { margin-top: 10px; }
.post-body h3.sp-principle { font-size: clamp(1.35rem, 2.4vw, 1.7rem); margin: 48px 0 12px; scroll-margin-top: 96px; display: flex; gap: 14px; align-items: baseline; }
.sp-num { flex: none; display: inline-grid; place-items: center; min-width: 2.1em; height: 2.1em; border-radius: 50%; border: 1px solid var(--fern); color: var(--glow); font-size: .8em; font-variant-numeric: tabular-nums; }
.post-body h2[id], .post-body h3[id] { scroll-margin-top: 96px; }
.sp-figure { margin: 26px 0 30px; background: var(--deep); border: 1px solid var(--line-strong); border-radius: 18px; padding: clamp(16px, 3vw, 26px); }
.sp-figure-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.sp-figure h4 { margin: 0 0 8px; font-size: .95rem; color: var(--snow); text-align: center; }
.sp-figure svg { width: 100%; height: auto; display: block; }
.sp-figure figcaption { margin-top: 14px; font-size: .9rem; color: var(--sage); line-height: 1.55; }
@media (max-width: 620px) { .sp-figure-grid { grid-template-columns: 1fr; } }
.fn-band { fill: rgba(126,214,180,0.10); stroke: rgba(126,214,180,0.55); stroke-width: 1; }
.fn-band.b2 { fill: rgba(126,214,180,0.16); } .fn-band.b3 { fill: rgba(126,214,180,0.22); } .fn-band.b4 { fill: rgba(126,214,180,0.28); } .fn-band.b5 { fill: rgba(126,214,180,0.34); } .fn-band.b6 { fill: rgba(126,214,180,0.40); }
.fn-label { fill: var(--snow); font: 500 13.5px/1 var(--font-body, system-ui, sans-serif); }
.fn-side { fill: var(--sage); font: 500 11.5px/1 var(--font-body, system-ui, sans-serif); letter-spacing: .08em; text-transform: uppercase; }
.fn-hand { stroke: var(--glow); stroke-width: 1.4; stroke-dasharray: 4 4; fill: none; }
.fn-dot { fill: var(--glow); }
.fn-hand-label { fill: var(--glow); font: 500 11px/1 var(--font-body, system-ui, sans-serif); }
.sp-who td:first-child { color: var(--snow); font-weight: 500; }
.sp-cert { display: inline-block; margin-left: 6px; font-size: .72rem; letter-spacing: .04em; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--fern); color: var(--mint); vertical-align: middle; }
.nav-toggle-label { white-space: nowrap; }
@media (max-width: 600px) {
  .prose-table.stack { border: 0; overflow: visible; }
  .prose-table.stack table, .prose-table.stack tbody, .prose-table.stack tr, .prose-table.stack td { display: block; width: 100%; }
  .prose-table.stack thead { display: none; }
  .prose-table.stack table { min-width: 0 !important; }
  .prose-table.stack tr { border: 1px solid var(--line); border-radius: 14px; padding: 6px 0; margin-bottom: 10px; background: var(--deep); }
  .prose-table.stack td { border: 0; padding: 6px 14px; }
  .prose-table.stack td::before { content: attr(data-label); display: block; color: var(--mint); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 2px; }
  .prose-table.stack td[data-label=""]::before { display: none; }
  .prose-table.stack td:first-child { color: var(--snow); font-weight: 500; }
}
.ec-note { color: var(--sage); font-size: .92rem; margin-top: 14px; }