/* ================================================================ Learn hub
   The knowledge hub at /learn/: the hub page, its search and filters, the
   resource cards, and the article layout. Same tokens and rhythm as the rest
   of the site; every block on an explicit panel so copy reads at any width. */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.learn-hub-head { max-width: 44em; }
.learn-search { display: flex; gap: 10px; align-items: stretch; max-width: 44em; margin: 0 0 20px; }
.learn-search input { flex: 1 1 auto; min-width: 0; min-height: 48px; padding: 0 16px; font: inherit; font-size: 16px; color: var(--text); background: var(--panel); border: 1px solid var(--border-strong); border-radius: 12px; }
.learn-search input::placeholder { color: var(--text-3); }
.learn-search input:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.learn-search .btn { flex: none; }
.learn-filters { display: grid; gap: 14px; padding: 16px 18px; background: var(--panel); border: 1px solid var(--border-strong); border-radius: 14px; margin-bottom: 24px; }
.learn-filter-group { display: grid; gap: 8px; }
.learn-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.page-body .chip-link { display: inline-flex; align-items: center; min-height: 40px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--border-strong); background: transparent; color: var(--text-2); font-size: 14px; font-weight: 500; text-decoration: none; }
.page-body .chip-link:hover { color: var(--text); border-color: var(--text-3); }
.page-body .chip-link[aria-current="true"] { color: #1A1305; background: var(--gold); border-color: var(--gold); }
.page-body .chip-link:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.learn-status { min-height: 1.4em; font-size: 15px; color: var(--text-2); margin: 0 0 8px; }
.learn-results, .learn-featured, .learn-cat { margin: 0 0 40px; }
.learn-cat-head { display: grid; gap: 6px; margin-bottom: 14px; }
.learn-featured > .note, .learn-results > .h-tiny { margin-bottom: 14px; }
.res-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.res-grid.featured .res-card { border-color: rgba(226, 169, 59, 0.45); }
.res-card { display: grid; gap: 10px; align-content: start; padding: 18px 18px 16px; background: var(--panel); border: 1px solid var(--border-strong); border-radius: 14px; min-width: 0; }
.res-card[hidden] { display: none; }
.page-body .res-link { display: grid; gap: 6px; text-decoration: none; color: inherit; }
.page-body .res-link:hover .res-title, .page-body .res-link:focus-visible .res-title { text-decoration: underline; text-underline-offset: 0.18em; }
.page-body .res-link:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; border-radius: 6px; }
.res-cat { font-size: 11.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); }
.res-title { font-family: var(--display); font-weight: 600; font-size: 20px; letter-spacing: -0.02em; line-height: 1.15; color: var(--text); }
.res-summary { font-size: 14.5px; color: var(--text-2); }
.res-snippet { font-size: 13.5px; color: var(--text-3); }
.res-snippet mark { background: rgba(226, 169, 59, 0.22); color: var(--text); padding: 0 2px; border-radius: 3px; }
.res-meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.tag { display: inline-flex; align-items: center; min-height: 26px; padding: 0 9px; border-radius: 999px; background: var(--raised); color: var(--text-2); font-size: 12.5px; text-decoration: none; }
.page-body a.tag { display: inline-flex; align-items: center; min-height: 40px; padding: 0 11px; border-radius: 999px; background: var(--raised); color: var(--text-2); font-size: 13px; text-decoration: none; }
.page-body a.tag:hover { color: var(--text); }
.avail { display: inline-flex; align-items: center; min-height: 26px; padding: 0 9px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }
.avail-available { color: #1A1305; background: var(--gold); }
.avail-planned { color: var(--text); background: rgba(76, 141, 255, 0.18); border: 1px solid rgba(76, 141, 255, 0.5); }
.avail-guidance { color: var(--text-2); background: transparent; border: 1px solid var(--border-strong); }
.learn-empty { padding: 28px 24px; background: var(--panel); border: 1px dashed var(--border-strong); border-radius: 14px; display: grid; gap: 10px; }
.learn-empty h3 { font-family: var(--display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; }
.learn-empty p { font-size: 15px; color: var(--text-2); }

/* article */
.learn-article { max-width: 100%; }
.learn-crumbs { font-size: 14px; color: var(--text-3); margin-bottom: 20px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.page-body .learn-crumbs a { display: inline-flex; align-items: center; min-height: 40px; }
.learn-head { display: grid; gap: 18px; max-width: 46em; margin-bottom: 32px; }
.learn-facts { display: grid; grid-template-columns: repeat(3, minmax(0, auto)); gap: 12px; padding: 14px 16px; background: var(--panel); border: 1px solid var(--border-strong); border-radius: 12px; }
.learn-fact { display: grid; gap: 6px; align-content: start; justify-items: start; min-width: 0; }
.learn-fact-k { font-size: 11.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); }
.learn-fact-line { font-size: 13px; color: var(--text-2); }
.learn-fact time { font-size: 15px; color: var(--text); }
.learn-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.learn-team { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 8px 0 6px; }
.learn-member { display: grid; gap: 6px; justify-items: center; text-align: center; padding: 16px 10px 12px; background: var(--panel); border: 1px solid var(--border-strong); border-radius: 14px; }
.learn-ring { --state: var(--working); position: relative; width: 64px; height: 64px; border-radius: 50%; display: block; }
.learn-ring::before { content: ''; position: absolute; inset: -4px; border-radius: 50%; border: 2px solid var(--state); }
.learn-ring[data-state="waiting"] { --state: var(--waiting); }
.learn-ring[data-state="blocked"] { --state: var(--blocked); }
.learn-ring[data-state="idle"] { --state: var(--idle); }
.learn-ring img, .learn-ring .initials { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.learn-ring .initials { display: flex; align-items: center; justify-content: center; background: var(--raised); color: var(--text); font-weight: 600; font-size: 18px; }
.learn-member-name { font-size: 13px; color: var(--text-3); }
.learn-member-role { font-family: var(--display); font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.learn-member-note { font-size: 13px; color: var(--text-2); }
.learn-caption { font-size: 13px; color: var(--text-3); margin: 0 0 28px; }
.learn-flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; padding: 0; margin: 0 0 32px; list-style: none; counter-reset: flow; }
.learn-flow li { position: relative; display: grid; gap: 4px; padding: 14px 14px 12px 14px; background: var(--panel); border: 1px solid var(--border-strong); border-radius: 12px; }
.learn-flow li::before { counter-increment: flow; content: counter(flow); width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; background: var(--gold); color: #1A1305; margin-bottom: 4px; }
.learn-flow li b { font-family: var(--display); font-weight: 600; font-size: 15px; }
.learn-flow li span { font-size: 13.5px; color: var(--text-2); }
.learn-body { max-width: 46em; }
.learn-body h2 { font-size: 28px; margin: 40px 0 10px; }
.learn-body h3 { font-family: var(--display); font-weight: 600; font-size: 20px; letter-spacing: -0.02em; margin: 24px 0 8px; }
.learn-body p, .learn-body li { font-size: 17px; line-height: 1.6; color: var(--text-2); }
.learn-body p { margin: 0 0 14px; }
.learn-body strong { color: var(--text); }
.learn-body ul { padding-left: 22px; margin: 0 0 14px; display: grid; gap: 6px; }
.learn-body ol { margin: 0 0 14px; }
.learn-body blockquote { margin: 0 0 16px; padding: 16px 18px; border-left: 3px solid var(--gold); background: rgba(226, 169, 59, 0.06); border-radius: 0 12px 12px 0; }
.learn-body blockquote p { color: var(--text); margin: 0 0 8px; }
.learn-body blockquote p:last-child { margin: 0; }
.learn-body pre { margin: 0 0 16px; padding: 16px 18px; background: var(--ground-deep); border: 1px solid var(--border-strong); border-radius: 12px; overflow-x: auto; font-size: 14px; line-height: 1.55; color: var(--text); white-space: pre-wrap; overflow-wrap: anywhere; }
.learn-body code { font-family: ui-monospace, 'Cascadia Mono', 'Segoe UI Mono', Menlo, monospace; font-size: 0.92em; }
.learn-body table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 15px; display: block; overflow-x: auto; }
.learn-body th, .learn-body td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border-strong); vertical-align: top; color: var(--text-2); }
.learn-body th { color: var(--text); font-weight: 600; }
.learn-body hr { border: 0; border-top: 1px solid var(--border-strong); margin: 28px 0; }
.learn-sources { margin-top: 32px; max-width: 46em; }
.learn-sources h2, .learn-related h2 { font-family: var(--display); font-weight: 600; font-size: 24px; letter-spacing: -0.02em; margin: 0 0 12px; }
.learn-sources ul { padding-left: 20px; display: grid; gap: 6px; }
.learn-sources li { font-size: 15px; color: var(--text-2); }
.learn-sources .quiet { color: var(--text-3); }
.learn-related { margin-top: 40px; }
.learn-foot { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-strong); }
@media (max-width: 1100px) { .res-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .learn-team { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) {
  .learn-facts { grid-template-columns: 1fr; }
  .learn-body h2 { font-size: 24px; }
}
@media (max-width: 640px) {
  .res-grid { grid-template-columns: 1fr; }
  .learn-search { flex-direction: column; }
  .learn-search .btn { width: 100%; }
  .learn-body p, .learn-body li { font-size: 16px; }
}
@media (max-width: 360px) {
  .learn-team { grid-template-columns: 1fr; }
  .learn-flow { grid-template-columns: 1fr; }
}