/* Site information architecture: level 1 global header, level 2 sticky section rail, ⌘K quick jump. */
.gnav{height:76px;gap:0;padding:0 max(24px,calc((100% - 1336px)/2))}
.gnav .brand{margin-right:34px}
.gnav .gnav-tabs{display:flex;align-self:stretch;align-items:stretch;gap:0;margin-left:0;font-size:inherit}
.gnav-tab{display:grid;grid-template-columns:auto auto;grid-template-rows:auto auto;column-gap:8px;align-content:center;padding:0 20px;border-bottom:3px solid transparent;color:#3a4553;transition:background .15s,border-color .15s}
.gnav-tab:hover{background:#f5f7fa;color:#0c2a4a!important}
.gnav-tab.active{border-bottom-color:#0c2a4a;color:#0c2a4a;background:#f5f7fa}
.gnav-no{grid-row:1/3;align-self:center;font:10px var(--mono);color:#1a5296;letter-spacing:.04em}
.gnav-name{font-size:14px;font-weight:600;letter-spacing:-.02em;line-height:1.3}
.gnav-tab small{font-size:10.5px;color:#7a8492;line-height:1.4}
.gnav-tab.active small{color:#1a5296}
.gnav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.find-button{display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid #d9dee5;padding:8px 10px 8px 12px;font-size:12px;color:#3a4553;min-width:150px;justify-content:space-between}
.find-button:hover{border-color:#1a5296;color:#1a5296}
.find-button kbd,.find-dialog kbd{font:10px var(--mono);border:1px solid #d9dee5;border-bottom-width:2px;padding:1px 5px;color:#5a6573;background:#f5f7fa}
/* level 2 */
.chapter-rail.local-nav{justify-content:flex-start;gap:26px;padding:0 max(24px,calc((100% - 1336px)/2));background:rgba(255,255,255,.97);border-top:1px solid #d9dee5;border-bottom:1px solid #d9dee5;height:54px;overflow-x:auto;scrollbar-width:none}
.chapter-rail.local-nav::-webkit-scrollbar{display:none}
.chapter-rail.local-nav a{font-size:12px;white-space:nowrap;flex-shrink:0}
.rail-label{flex-shrink:0;font:10px var(--mono);letter-spacing:.1em;color:#fff;background:#0c2a4a;padding:5px 9px;text-transform:uppercase;white-space:nowrap}
.rail-find{margin-left:auto;flex-shrink:0;background:#fff;border:1px solid #d9dee5;font-size:12px;padding:6px 10px;color:#3a4553}
.rail-find:hover{border-color:#1a5296;color:#1a5296}
.chapter-rail .rail-next{color:#1a5296!important;font-weight:600;border-bottom:0!important}
.rail-current{flex-shrink:0;font-size:11.5px;color:#1a5296;background:#e8eef6;padding:4px 10px;white-space:nowrap}
.rail-current b{font-weight:600}
html{scroll-padding-top:70px}
/* atlas: dossier toc and index sit under the rail */
.dossier-toc{top:54px!important}
.paper-index{top:74px!important;max-height:calc(100vh - 94px)!important}
.d-sec{scroll-margin-top:110px!important}
/* footer */
.footer-steps{display:flex;gap:4px;order:2}
.footer-steps a{font-size:12px;padding:6px 10px;border:1px solid #d9dee5;display:inline-flex;gap:6px;align-items:baseline}
.footer-steps a span{font:9px var(--mono);color:#1a5296}
.footer-steps a:hover{border-color:#1a5296;color:#1a5296}
/* quick jump */
.find-dialog{width:min(640px,calc(100% - 32px));max-height:min(620px,80vh);padding:0;border:1px solid #d9dee5;border-top:3px solid #0c2a4a;background:#fff;box-shadow:0 24px 60px -20px #0c2a4a55;overflow:hidden;display:flex;flex-direction:column}
.find-dialog:not([open]){display:none}
.find-dialog::backdrop{background:#0c1a2c73;backdrop-filter:blur(3px)}
.find-top{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid #d9dee5}
.find-top span{font-size:18px;color:#1a5296}
.find-top input{flex:1;border:0;outline:0;font-size:16px;background:transparent;padding:4px 0}
.find-list{list-style:none;margin:0;padding:6px 0;overflow-y:auto}
.find-group{font:9.5px var(--mono);letter-spacing:.1em;color:#7a8492;padding:10px 16px 4px}
.find-item a{display:grid;grid-template-columns:52px 1fr auto;gap:10px;align-items:center;padding:9px 16px;font-size:13.5px;color:#1b2430}
.find-item a small{font-size:11px;color:#7a8492}
.find-item .fi-year{font:11px var(--mono);color:#5a6573}
.find-item .fi-dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:8px;vertical-align:1px}
.find-item[aria-selected="true"] a{background:#e8eef6;color:#0c2a4a}
.find-empty{padding:26px 16px;font-size:13px;color:#7a8492}
.find-foot{display:flex;gap:16px;padding:10px 16px;border-top:1px solid #d9dee5;font-size:11px;color:#7a8492;background:#f7f8fa}
@media(max-width:1100px){.gnav-tab{padding:0 14px}.gnav .brand{margin-right:18px}.find-button{min-width:0}}
@media(max-width:800px){
  .gnav{height:62px;padding:0 16px}
  .gnav .gnav-tabs{display:flex!important}
  .gnav .brand>span{display:none}
  .gnav .brand{margin-right:8px}
  .gnav-tab{padding:0 10px;grid-template-columns:auto;grid-template-rows:auto}
  .gnav-tab small,.gnav-no{display:none}
  .gnav-name{font-size:13px}
  .find-button{min-width:0;padding:8px}
  .find-button kbd{display:none}
  .gnav .quiet-button{display:none}
  .chapter-rail.local-nav{height:48px;gap:20px;padding:0 16px}
  .rail-find span{display:none}
  .dossier-toc{top:48px!important}
  .footer-steps{order:0;width:100%}
}
@media(max-width:420px){.gnav-name{font-size:12px}.gnav-tab{padding:0 7px}.find-button{font-size:0}.find-button::before{content:'⌕';font-size:16px}}
.local-nav .rail-find{visibility:hidden;opacity:0;transition:opacity .2s}
.local-nav.stuck .rail-find{visibility:visible;opacity:1}
.local-nav.stuck{box-shadow:0 6px 16px -12px #0c2a4a55}
/* Long inline formulas scroll inside themselves on narrow screens instead of widening the page. */
@media(max-width:800px){
  .dossier-body .katex:not(.katex-display > .katex),.map-detail .katex,.guide-page .katex:not(.katex-display > .katex){display:inline-block;max-width:100%;overflow-x:auto;overflow-y:hidden;vertical-align:middle}
  .dossier-body,.dossier-layout{min-width:0;max-width:100%}
}
/* Limitations and correction request, shown above the footer on every page */
.site-notice{width:min(1240px,calc(100% - 48px));margin:70px auto 0;border:1px solid #d9dee5;border-top:3px solid #0c2a4a;background:#f5f7fa;padding:26px 30px 24px;display:grid;grid-template-columns:220px 1fr;gap:10px 36px}
.notice-head .eyebrow{color:#1a5296;font-size:10px}
.notice-head h2{font-size:20px;font-weight:600;letter-spacing:-.04em;margin-top:8px}
.site-notice ul{margin:0;padding:0;list-style:none}
.site-notice li{font-size:12.5px;line-height:1.85;color:#3a4553;padding:6px 0;border-bottom:1px solid #e3e7ec}
.site-notice li b{color:#1b2430}
.notice-contact{grid-column:2;font-size:13px;line-height:1.85;color:#1b2430;margin-top:10px}
.notice-contact a{color:#1a5296;font-weight:600;text-decoration:underline;text-underline-offset:3px}
@media(max-width:800px){.site-notice{grid-template-columns:1fr;padding:20px;width:calc(100% - 32px)}.notice-contact{grid-column:1}}