/* Public documents share the Core matrix and the application's compact identity. */
.document-page { margin: 0; position: relative; isolation: isolate; min-height: 100svh; background: var(--bg); color: var(--text); font: 1rem/1.65 var(--font); }
.document-page::before { content: ''; position: absolute; z-index: -1; inset: 0 0 auto; height: 300px; pointer-events: none; background: linear-gradient(to bottom, var(--scene-shade), var(--bg)), var(--scene-roleplay) center 46% / cover; }
.document-page .container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 24px max(16px, env(safe-area-inset-right)) 48px max(16px, env(safe-area-inset-left)); display: flex; flex-direction: column; gap: 28px; }
.document-page .container > header { display: flex; justify-content: flex-start; margin: 0; }
.document-page .brand-block { display: inline-flex; flex-direction: row; align-items: center; gap: 10px; padding: 8px 12px; border: 1px solid var(--border-2); border-radius: var(--radius-md); background: var(--surface); color: var(--text); text-decoration: none; }
.document-page #main-logo { display: block; width: 48px; height: 48px; margin: 0; object-fit: contain; filter: none; animation: none; }
.document-page .brand-title { position: static; color: var(--text); font-size: 1.625rem; line-height: 1.25; font-weight: 800; letter-spacing: -.035em; text-shadow: none; }
.document-page .nav-bar { display: flex; flex-wrap: wrap; justify-content: flex-start; gap: 4px 12px; margin: 0; padding: 0 0 12px; background: transparent; border: 0; border-bottom: 1px solid var(--border); border-radius: 0; backdrop-filter: none; -webkit-backdrop-filter: none; }
.document-page .nav-link { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 10px; border: 0; border-radius: var(--radius-sm); color: var(--text-2); font-size: .875rem; font-weight: 650; text-decoration: none; }
.document-page .nav-link:hover { background: var(--surface-2); color: var(--text); }
.document-page .nav-link.active { background: var(--brand-soft); color: var(--brand); box-shadow: inset 0 -2px var(--brand); }
.document-page .hero, .document-page .page-header { width: 100%; max-width: none; margin: 0; align-items: flex-start; text-align: left; gap: 8px; }
.document-page .hero h1, .document-page .page-header h1 { font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.3; letter-spacing: -.025em; font-weight: 800; color: var(--text); }
.document-page .hero .hero-desc, .document-page .page-header p { max-width: 68ch; font-size: 1rem; line-height: 1.65; color: var(--text-2); }
.document-page .badge-status { padding: 0; border: 0; border-radius: 0; background: transparent; color: var(--text-3); font-size: .75rem; letter-spacing: .04em; }
.document-page .badge-status::before { display: none; animation: none; }
.document-page :is(.card, .principles-box, .tech-item, .faq-item, .download-card, .step-card, .update-card, .doc-section) { min-width: 0; border-radius: var(--radius-md); box-shadow: none; }
.document-page .card:hover { transform: none; box-shadow: none; }
.document-page :is(.card, .principles-box, .download-card) { padding: clamp(16px, 3vw, 28px); }
.document-page :is(.download-button, .btn) { display: inline-flex; justify-content: center; align-items: center; min-height: 44px; max-width: 100%; white-space: normal; background: var(--brand-solid); color: var(--on-accent); border: 1px solid var(--brand); border-radius: var(--radius-md); box-shadow: none; text-align: center; }
.document-page :is(p, h1, h2, h3, h4, li, .meta-item) { overflow-wrap: anywhere; }
.document-page :is(pre, .table-wrap) { max-width: 100%; overflow: auto; }
.document-page footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; margin-top: 12px; padding: 20px 0 0; border-top: 1px solid var(--border); color: var(--text-3); font-size: .8125rem; }
.document-page footer a { display: inline-flex; align-items: center; min-height: 44px; color: var(--text-2); }
.document-page #announcement-container:empty { display: none; }
.document-story { display: grid; gap: 28px; }
.document-page .document-lead { max-width: 72ch; color: var(--text-2); font-size: 1.0625rem; }
.document-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 24px; }
.document-features article { min-width: 0; padding-top: 20px; border-top: 1px solid var(--border-2); }
.document-features h2, .document-more h2, .document-guide h2 { margin: 0 0 12px; font-size: 1.25rem; line-height: 1.4; }
.document-features h3 { margin: 0 0 8px; font-size: 1.125rem; }
.document-features p { margin: 0; color: var(--text-2); }
.document-page :is(.document-story, .document-guide) a { color: var(--brand); text-underline-offset: 3px; }
.document-start { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 24px; }
.document-start > a { display: inline-flex; align-items: center; min-height: 44px; }
.document-page .document-start > .btn {
  min-height: 48px;
  padding: 10px 20px;
  border-color: color-mix(in srgb, var(--brand) 58%, var(--border-2));
  background: var(--brand-soft);
  color: var(--text);
  font-size: .9375rem;
  font-weight: 750;
  line-height: 1.35;
  text-decoration: none;
  transition: background .16s ease, border-color .16s ease;
}
.document-page .document-start > .btn:hover {
  border-color: var(--brand);
  background: color-mix(in srgb, var(--brand-solid) 32%, var(--surface-2));
  color: var(--text);
}
.document-more { padding-top: 24px; border-top: 1px solid var(--border); }
.document-page .document-note { color: var(--text-3); font-size: .875rem; }
.document-faq details, .document-reference { border-block-end: 1px solid var(--border); }
.document-page :is(.document-faq, .document-reference) summary { min-height: 44px; padding: 16px 0; color: var(--text); font-weight: 700; cursor: pointer; overflow-wrap: anywhere; }
.document-faq summary::marker, .document-reference summary::marker { color: var(--brand); }
.document-faq details > p { padding: 0 0 20px; max-width: 78ch; color: var(--text-2); }
.document-guide { padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.document-guide ol { padding-left: 24px; display: grid; gap: 16px; color: var(--text-2); }
.document-guide strong { color: var(--text); }
.document-guide .document-note { margin-top: 20px; }
.document-reference-body { display: grid; gap: 24px; padding-bottom: 20px; }
.document-simulation h2 { margin: 0 0 16px; font-size: 1.25rem; }
.document-simulation dl { display: grid; gap: 16px; margin: 0; }
.document-simulation dl > div { display: grid; grid-template-columns: minmax(160px, .4fr) minmax(0, 1fr); gap: 8px 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.document-simulation dt { font-weight: 700; }
.document-simulation dd { margin: 0; color: var(--text-2); }
@media (max-width: 540px) {
    .document-page .container { gap: 24px; padding-top: 16px; }
    .document-page #main-logo { width: 44px; height: 44px; }
    .document-page .nav-bar { gap: 2px; }
    .document-page .nav-link { padding-inline: 8px; }
    .document-page .card { flex-direction: column; align-items: flex-start; }
    .document-features { gap: 16px; }
    .document-features article { padding-top: 14px; }
    .document-features h2 { margin-bottom: 6px; font-size: 1.0625rem; }
    .document-features p { font-size: .9375rem; line-height: 1.6; }
    .document-simulation dl > div { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) { .document-page .spinner { animation: none; } }