/* SPDX-License-Identifier: MPL-2.0 */
/* CoreDoc discovery and reading share the home page's palette and hard shadows. */
.core-explorer-layout, .founder-layout { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(3rem, 7vw, 7rem); align-items: start; }
.core-explorer .eyebrow, .founder .eyebrow { color: var(--accent); }
.core-explorer :focus-visible, .founder :focus-visible { outline-color: var(--accent); }
.core-explorer .section-heading > .core-index-count { color: var(--ink); font-weight: 750; font-size: 1rem; }
.core-explorer .section-heading > .core-index-note { font-size: 0.8125rem; }
.core-explorer .text-link { margin-top: 1.25rem; }
.core-index-list { display: grid; gap: 0.65rem; min-width: 0; }
.core-index-item { border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow-control); }
.core-index-item summary { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr) 1rem; align-items: start; gap: 1rem; padding: 1.25rem; cursor: pointer; list-style: none; }
.core-index-item summary::-webkit-details-marker, .core-mobile-index > summary::-webkit-details-marker { display: none; }
.core-index-item:hover, .core-index-item[open] { border-color: var(--accent); }
.core-index-item summary:hover { background: var(--black-soft); }
.core-index-item[open] > summary { background: var(--black-soft); border-bottom: 1px solid var(--line); }
.core-index-number { padding-top: 0.15rem; color: var(--accent); font: 0.7rem/1.5 var(--mono); }
.core-index-title { font-size: 1rem; line-height: 1.4; font-weight: 750; }
.core-index-question { display: block; margin-top: 0.5rem; color: var(--muted); font-size: 0.8125rem; line-height: 1.6; font-weight: 400; }
.core-index-toggle { color: var(--accent); font: 1.3rem/1 var(--mono); }
.core-index-item[open] .core-index-toggle { transform: rotate(45deg); }
.core-index-body { padding: 1.25rem; }
.core-principle-link { display: inline-block; margin-bottom: 0.9rem; color: var(--accent); font-size: 0.8125rem; font-weight: 700; }
.core-index-body ol, .core-nav-group ol { list-style: none; padding: 0; margin: 0; }
.core-index-body li + li { border-top: 1px solid var(--line); }
.core-index-body li a { display: grid; grid-template-columns: 5rem minmax(0, 1fr) 1rem; gap: 0.75rem; padding: 0.85rem 0; text-decoration: none; font-size: 0.8125rem; line-height: 1.5; }
.core-index-body li a > span:first-child { font-family: var(--mono); font-size: 0.65rem; color: var(--accent); padding-top: 0.15rem; }
.core-index-body li a:hover { text-decoration: underline; }

.core-reader-heading { padding-block: clamp(3rem, 6vw, 5rem); }
.core-reader-heading h1 { max-width: none; margin-top: 1rem; }
.core-reader-lead { max-width: 52ch; margin-top: 1.25rem; font-size: 1.125rem; color: var(--muted); }
.core-version { margin-top: 1rem; color: var(--accent); font-family: var(--mono); font-size: 0.75rem; }
.core-reader-layout { display: grid; grid-template-columns: 17rem minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; padding-bottom: 4rem; }
.core-sidebar { position: sticky; top: calc(var(--site-header-height) + 1.5rem); max-height: calc(100vh - var(--site-header-height) - 3rem); max-height: calc(100svh - var(--site-header-height) - 3rem); overflow: auto; padding: 0.5rem 1rem 1rem 0.5rem; scrollbar-width: thin; }
.core-sidebar .eyebrow { margin-bottom: 1rem; }
.core-nav-intro { display: block; padding-block: 0.75rem; font-size: 0.8rem; }
.core-nav-group { border-top: 1px solid var(--line); padding-block: 0.75rem; }
.core-nav-group a { display: block; padding: 0.5rem; text-decoration: none; font-size: 0.8125rem; line-height: 1.5; }
.core-nav-group a span { display: block; margin-bottom: 0.2rem; color: var(--accent); font-family: var(--mono); font-size: 0.65rem; }
.core-nav-group .core-nav-principle { font-weight: 750; }
.core-nav-group ol { margin-left: 0.5rem; border-left: 1px solid var(--line); padding-left: 0.5rem; }
.core-nav-group li a { color: var(--muted); font-size: 0.75rem; }
.core-nav-group a:hover { background: var(--blue-tint); color: var(--ink); text-decoration: underline; }
.core-reader-content { min-width: 0; }
.core-mobile-index { display: none; }
.core-context { padding: 1rem 1.25rem; border: 1px solid var(--dark); background: white; box-shadow: var(--shadow-control); margin-bottom: 2.5rem; }
.core-context > summary, .core-history > summary { cursor: pointer; font-size: 0.8125rem; font-weight: 600; }
.core-prose { font-size: 0.9375rem; overflow-wrap: anywhere; }
.core-prose p, .core-rule-section p { margin-top: 1rem; }
.core-prose h2, .core-prose h3 { margin-block: 2rem 1rem; font-size: 1.35rem; letter-spacing: -0.025em; }
.core-table { overflow-x: auto; margin-block: 1.5rem; }
.core-table table { width: 100%; border-collapse: collapse; font-size: 0.8125rem; }
.core-table th, .core-table td { padding: 0.75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.core-table th { background: var(--surface); }
.core-table th:first-child { width: 40%; }
.core-prose pre { overflow-x: auto; padding: 1rem; background: var(--surface); font-size: 0.75rem; }
.core-principle { margin-bottom: 4rem; scroll-margin-top: 1.5rem; }
.core-principle-heading { padding: clamp(1.25rem, 3vw, 2rem); background: var(--dark); color: var(--paper); border: 2px solid var(--shadow-ink); box-shadow: var(--shadow-card); }
.core-principle-heading > .eyebrow { color: var(--orange-light); }
.core-principle-heading h2 { font-size: clamp(1.65rem, 3vw, 2.35rem); margin-top: 0.75rem; }
.core-principle-heading > p:not(.eyebrow) { margin-top: 1rem; color: var(--gray-light); font-size: 0.9375rem; }
.core-principle-heading .core-history { border-color: var(--black-soft); color: var(--gray-light); }
.core-principle-heading :focus-visible { outline-color: var(--orange-light); }
.core-rule { margin-top: 2rem; padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--dark); background: var(--surface); box-shadow: var(--shadow-control); scroll-margin-top: 1.5rem; }
.core-rule:target { outline: 3px solid var(--accent); outline-offset: 4px; }
.core-rule h3 { font-size: clamp(1.35rem, 2.3vw, 1.85rem); margin-top: 0.5rem; line-height: 1.25; }
.core-permalink { display: inline-block; margin-top: 0.75rem; color: var(--accent); font-size: 0.75rem; }
.core-rule-section { margin-top: 1.5rem; font-size: 0.9375rem; overflow-wrap: anywhere; }
.core-rule-section h4 { margin: 0; font-size: 0.8125rem; font-weight: 800; }
.core-rule-section p { margin-top: 0.6rem; }
.core-rule-statement { background: var(--blue-tint); border-left: 3px solid var(--accent); padding: 1.15rem; }
.core-rule-statement h4 { color: var(--accent); }
.core-history { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.core-governance { font-size: 0.75rem; margin-top: 0.5rem; }
.core-rule-navigation { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.core-rule-navigation a { font-size: 0.8125rem; line-height: 1.5; text-decoration: none; }
.core-rule-navigation a span { display: block; margin-bottom: 0.4rem; font: 0.65rem/1.5 var(--mono); color: var(--accent); }
.core-rule-navigation a:last-child { text-align: right; }
.core-rule-navigation a:hover { text-decoration: underline; }
.core-appendix { padding-top: 1rem; border-top: 2px solid var(--dark); }
.core-back-top { margin-top: 2rem; }
@media (max-width: 60rem) {
  .core-reader-layout { grid-template-columns: 14rem minmax(0, 1fr); gap: 1.5rem; }
}
@media (max-width: 56rem) {
  .core-explorer-layout, .founder-layout { gap: 2.5rem; }
}
@media (max-width: 48rem) {
  .core-reader-layout { grid-template-columns: minmax(0, 1fr); }
  .core-sidebar { display: none; }
  .core-mobile-index { display: block; position: sticky; top: calc(var(--site-header-height) + 0.75rem); z-index: 5; margin-bottom: 1.25rem; padding: 1rem 1.25rem; border: 2px solid var(--dark); box-shadow: var(--shadow-control); background: var(--paper); }
  .core-mobile-index > summary { font-size: 0.8125rem; font-weight: 750; cursor: pointer; list-style: none; }
  .core-mobile-index > summary::after { content: ' +'; float: right; }
  .core-mobile-index[open] > summary::after { content: ' −'; }
  .core-mobile-index nav { margin-top: 1rem; max-height: calc(60vh - var(--site-header-height)); max-height: calc(60svh - var(--site-header-height)); overflow-y: auto; padding: 0.35rem; }
  .core-rule, .core-principle { scroll-margin-top: 5rem; }
}
@media (max-width: 45rem) {
  .core-explorer-layout, .founder-layout { grid-template-columns: minmax(0, 1fr); }
  .core-explorer .section-heading > p { max-width: 65ch; }
  .core-index-item summary { grid-template-columns: minmax(0, 1fr) 1rem; gap: 0.5rem 0.75rem; padding: 1rem; }
  .core-index-number, .core-index-title { grid-column: 1; }
  .core-index-toggle { grid-column: 2; grid-row: 1 / 3; }
  .core-index-body { padding: 1rem; }
  .core-index-body li a { grid-template-columns: minmax(0, 1fr) 1rem; gap: 0.3rem; }
  .core-index-body li a > span:first-child { grid-column: 1 / -1; }
}
@media (max-width: 30rem) {
  .core-reader-heading h1 { font-size: clamp(2.4rem, 10vw, 3rem); }
  .core-rule, .core-principle-heading { padding: 1rem; }
  .core-rule-navigation { grid-template-columns: minmax(0, 1fr); }
  .core-rule-navigation a:last-child { text-align: left; }
}