/* The provenance register: flagship grammar. Warm paper, evidence cards,
   sticky filter chips, desktop index rail. House tokens throughout. 2026-08-12. */
.pl-wrap { max-width: 1200px; margin: 0 auto; padding: 0 1.1rem; }
@media (min-width: 980px) {
  .pl-wrap { display: grid; grid-template-columns: 210px 1fr; gap: 2.2rem; align-items: start; }
  .claim-rail { position: sticky; top: 4.2rem; max-height: calc(100vh - 5rem); overflow-y: auto;
    font-family: 'IBM Plex Mono', monospace; font-size: .72rem; line-height: 2;
    border-right: 1px solid #e0ddd5; padding-right: 1rem; }
  .claim-rail a { color: #6b6b60; text-decoration: none; display: flex; justify-content: space-between; gap: .6rem; }
  .claim-rail a:hover { color: #2d5a27; }
  .claim-rail .rail-date { color: #b0ada0; }
}
@media (max-width: 979px) { .claim-rail { display: none; } }

.pl-decomp { background: #f0ede3; border-radius: 12px; padding: 1.1rem 1.3rem; margin: 1.4rem 0 1.8rem;
  font-size: .95rem; line-height: 1.55; }
.pl-decomp strong { color: #2d5a27; }

.filters, [role="group"][aria-label*="Filter"] { position: sticky; top: 0; z-index: 5;
  background: rgba(251,250,245,.92); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  padding: .7rem 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.filter-btn { font: 600 .78rem/1 'IBM Plex Mono', monospace; letter-spacing: .06em;
  padding: .5rem .85rem; border: 1px solid #d4d0c6; border-radius: 999px;
  background: #fff; color: #57574e; cursor: pointer; min-height: 34px; }
.filter-btn:hover { border-color: #2d5a27; color: #2d5a27; }
.filter-btn.active { background: #2d5a27; border-color: #2d5a27; color: #fbfaf5; }

article.claim { background: #fff; border: 1px solid #e0ddd5; border-radius: 12px;
  padding: 1.15rem 1.3rem; margin: 0 0 1.1rem;
  box-shadow: 0 1px 2px rgba(28,28,25,.06); scroll-margin-top: 4.6rem; }
article.claim:target { border-color: #2d5a27; box-shadow: 0 0 0 3px rgba(45,90,39,.14); }
.claim-head { display: flex; flex-wrap: wrap; gap: .5rem .8rem; align-items: center; margin-bottom: .5rem; }
.claim-id { font: 700 .78rem/1 'IBM Plex Mono', monospace; letter-spacing: .05em;
  background: #1c1c19; color: #e8d5a0; border-radius: 6px; padding: .3rem .55rem; }
.claim-date { font: .8rem/1 'IBM Plex Mono', monospace; color: #6b6b60; }
.cat-tag { font: 600 .68rem/1 'IBM Plex Mono', monospace; letter-spacing: .08em; text-transform: uppercase;
  border-radius: 999px; padding: .28rem .6rem; border: 1px solid; }
.cat-timeline { color: #2d5a27; border-color: #2d5a27; background: rgba(45,90,39,.06); }
.cat-concepts { color: #8b7355; border-color: #8b7355; background: rgba(139,115,85,.07); }
.cat-findings { color: #b33a2a; border-color: #b33a2a; background: rgba(179,58,42,.06); }
.claim-title { font-family: Fraunces, Georgia, serif; font-size: 1.14rem; line-height: 1.3;
  margin: .15rem 0 .55rem; letter-spacing: -0.01em; }
.claim-text { font-size: .95rem; line-height: 1.6; max-width: 72ch; }
.claim-text .mono, .claim-evidence .mono { font: .82em 'IBM Plex Mono', monospace;
  background: #f0ede3; border-radius: 4px; padding: .08em .35em; word-break: break-all; }
.claim-meta { margin: .8rem 0 .25rem; font-size: .8rem; letter-spacing: .08em;
  text-transform: uppercase; color: #8b7355; font-family: 'IBM Plex Mono', monospace; }
.claim-evidence { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .45rem; }
.claim-evidence li { font-size: .84rem; line-height: 1.45; background: #fbfaf5;
  border: 1px solid #e0ddd5; border-radius: 8px; padding: .45rem .65rem; max-width: 100%; }
.claim-evidence a { color: #2d5a27; font-weight: 600; }
@media (max-width: 640px) {
  article.claim { padding: .95rem 1rem; }
  .claim-title { font-size: 1.05rem; }
}