/* PCA standards page — text-first editorial layout. */
.pca-page {
  background: var(--paper);
}

.pca-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4.5rem, 9vw, 8rem) 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}

.pca-hero .container { position: relative; z-index: 1; }
.pca-hero .crumbs,
.pca-hero .crumbs a { color: var(--mute); }
.pca-hero .crumbs { letter-spacing: 0; text-transform: none; }
.pca-hero .eyebrow { color: var(--clay); }
.pca-hero h1 { max-width: 19ch; margin: 1rem 0 1.25rem; color: var(--ink); }
.pca-hero .lede { max-width: 44rem; color: var(--mute); font-size: clamp(1.1rem, 2vw, 1.35rem); }
.pca-hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.pca-hero .pca-text-link { align-self: center; color: var(--brand-blue-deep); font-weight: 600; }

.pca-section { padding: clamp(4rem, 8vw, 7rem) 0; }
.pca-section--bone { background: var(--bone); }
.pca-section--paper { background: var(--bone); color: var(--ink); }
.pca-section--paper h2,
.pca-section--paper h3 { color: var(--ink); }
.pca-section--paper p { color: var(--mute); }
.pca-section-head { max-width: 48rem; margin-bottom: 2.5rem; }
.pca-section-head h2 { margin: .6rem 0 1rem; }
.pca-section-head p { color: var(--mute); font-size: 1.08rem; }

.pca-license-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, .85fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.pca-proof-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.pca-proof-list li { padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.pca-proof-list strong { display: block; margin-bottom: .25rem; color: var(--brand-blue-deep); }

.pca-origin-card { padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--line-strong); background: var(--paper); }
.pca-origin-card h3 { margin: 0 0 1rem; }
.pca-origin-links { display: grid; gap: .7rem; margin-top: 1.4rem; }
.pca-origin-links a { width: fit-content; color: var(--brand-blue-deep); font-weight: 650; }

.pca-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.pca-standard-card { min-height: 17rem; padding: clamp(1.5rem, 3vw, 2.25rem); background: var(--paper); }
.pca-standard-number { display: block; margin-bottom: 2rem; color: var(--clay); font-size: .82rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.pca-standard-card h3 { margin: 0 0 .85rem; }
.pca-standard-card p { color: var(--mute); }

.pca-level-note { max-width: 52rem; margin-top: 1.5rem; color: var(--mute); }

.pca-process { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; counter-reset: process; }
.pca-process li { display: grid; grid-template-columns: 4.25rem 1fr; gap: 1.25rem; padding: 1.4rem 0; border-top: 1px solid var(--line); counter-increment: process; }
.pca-process li:last-child { border-bottom: 1px solid var(--line); }
.pca-process li::before { content: "0" counter(process); color: var(--clay); font-family: var(--serif); font-size: 1.5rem; }
.pca-process strong { display: block; margin-bottom: .3rem; color: var(--ink); font-family: var(--serif); font-size: 1.3rem; font-weight: 400; }

.pca-related { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 2.5rem; }
.pca-related a { display: block; padding: 1.25rem; border: 1px solid var(--line-strong); color: var(--ink); text-decoration: none; }
.pca-related a:hover { border-color: var(--brand-blue); color: var(--brand-blue-deep); }

.pca-closing { padding: clamp(4rem, 8vw, 7rem) 0; border-block: 1px solid var(--line); background: var(--bone); color: var(--ink); text-align: center; }
.pca-closing h2 { max-width: 16ch; margin: 0 auto 1rem; color: var(--ink); }
.pca-closing p { max-width: 42rem; margin: 0 auto 1.8rem; color: var(--mute); }
.pca-closing .btn { color: #fff; background: var(--brand-blue); }
.pca-closing .btn:hover { color: #fff; background: var(--brand-blue-deep); }
.pca-trust-band { border-top: 1px solid var(--line); background: var(--paper); }
.pca-compact-trust { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem 1.5rem; padding: 1.25rem 0; font-size: .88rem; }
.pca-compact-trust a { color: var(--brand-blue-deep); }
.pca-compact-trust a + a::before { content: "·"; margin-right: 1.5rem; text-decoration: none; }
.pca-page .footer-heading { margin: 0 0 1.1rem; color: #fff; font-family: var(--sans); font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }

@media (max-width: 900px) {
  .pca-license-grid,
  .pca-card-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .pca-license-grid,
  .pca-card-grid,
  .pca-related { grid-template-columns: 1fr; }
  .pca-hero { padding-top: 3.5rem; }
  .pca-standard-card { min-height: 0; }
  .pca-process li { grid-template-columns: 2.5rem 1fr; }
  .pca-compact-trust { display: grid; }
  .pca-compact-trust a + a::before { content: none; }
}