/* Shared traditional category menu: compact masthead, sticky category bar. */
:root{--category-clearance:86px}
html{scroll-padding-top:var(--category-clearance);scroll-behavior:auto}
.banner{padding:2px 8px;font-size:10px;line-height:1.5;letter-spacing:.05em}
.site-head .masthead{display:flex;gap:20px;padding-top:5px;padding-bottom:5px}
.site-head .brand{font-size:20px;line-height:1.35;letter-spacing:.02em}
.site-head .brand-mark{font-size:32px;line-height:1}
.site-head .brand small{font-size:10px;margin-top:1px;letter-spacing:.06em}
.site-head .nav{margin:0;padding:0;gap:14px;font-size:12px;flex-wrap:nowrap}
.site-head .nav a{min-height:36px;white-space:nowrap}
.site-category-dock{position:sticky;top:0;z-index:40;background:#faf9f5;border-bottom:2px solid #315d4c}
.site-category-dock>.wrap{padding-top:5px;padding-bottom:0}
.site-category-dock .category-tabs{gap:6px;margin:0}
.site-category-dock .category-tab{flex-direction:row;justify-content:center;gap:6px;min-height:60px;padding:5px 6px;border-radius:6px;border:1px solid #aab7a6;background:var(--tab-paper)}
.site-category-dock .category-tab[aria-selected=true],.site-category-dock .category-tab[aria-current=location]{margin:0;padding:4px 5px;border:2px solid #315d4c;border-bottom-color:transparent;border-radius:6px 6px 0 0;background:#faf9f5;box-shadow:none;z-index:1}
.site-category-dock .category-tab[aria-selected=true]::after,.site-category-dock .category-tab[aria-current=location]::after{content:"";position:absolute;bottom:-3px;left:0;right:0;height:4px;background:#faf9f5}
.site-category-dock .category-illustration{width:30px;height:30px;flex:0 0 30px;margin:0}
.site-category-dock .category-tab strong{font-size:14px;line-height:1.4;letter-spacing:-.04em}
.site-category-dock .category-number,.site-category-dock .category-subtitle{display:none}
.site-category-dock .category-tab:focus-visible{outline:3px solid #ad5624;outline-offset:-3px}
.site-category-dock .category-tab[aria-selected=true]:focus-visible,.site-category-dock .category-tab[aria-current=location]:focus-visible{outline:none;border-top-color:#ad5624;border-left-color:#ad5624;border-right-color:#ad5624}
.home .category-panels{border:0;border-radius:0;background:#faf9f5}
.skip:focus{position:fixed;top:4px;left:4px;z-index:100}
main .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:0 6px;font-size:13px;line-height:1.6;margin:12px 0}
main .breadcrumb a{display:inline-flex;align-items:center;min-height:32px;max-width:100%;overflow-wrap:anywhere}
main .breadcrumb [aria-current=page]{overflow-wrap:anywhere}
main .breadcrumb-bottom{margin:30px 0 0;padding-top:12px;border-top:1px solid #d9ddd4}
@media(max-width:900px){.site-head .masthead{gap:12px}.site-head .nav{gap:10px;font-size:11px}.site-head .brand{font-size:18px}.site-category-dock .category-tab strong{font-size:12px}}
@media(max-width:600px){
 :root{--category-clearance:130px}
 .site-head .masthead{display:block;padding-top:4px;padding-bottom:2px}
 .site-head .brand{font-size:18px}.site-head .brand small{display:none}.site-head .brand-mark{font-size:26px}
 .site-head .nav,.editorial-article .site-head .nav{display:flex;overflow-x:auto;gap:14px;margin-top:0;padding-bottom:0;font-size:11px;scrollbar-width:thin}
 .site-head .nav a,.editorial-article .site-head .nav a{font-size:11px;min-height:32px;flex:0 0 auto}
 .site-category-dock>.wrap{padding:5px 12px 0}
 .site-category-dock .category-tabs{grid-template-columns:repeat(3,minmax(0,1fr));gap:4px}
 .site-category-dock .category-tab{min-height:50px;gap:3px;padding:4px 3px}
 .site-category-dock .category-tab[aria-selected=true],.site-category-dock .category-tab[aria-current=location]{padding:3px 2px}
 .site-category-dock .category-illustration{width:22px;height:22px;flex-basis:22px}
 .site-category-dock .category-tab strong{font-size:11px;line-height:1.35;overflow-wrap:anywhere}
 main .breadcrumb{font-size:12px;margin:8px 0}
}
/* The six category links form the common primary navigation. */
.site-head .nav,.editorial-article .site-head .nav{display:none}

/* Use the category-tab font throughout the internal site. */
body,body *,body *::before,body *::after{font-family:"Yu Gothic",Meiryo,sans-serif!important}

/* Shared illustration and centered page title; keep article text and controls. */
main .site-page-heading{display:flex;justify-content:center;align-items:center;gap:12px;text-align:center}
main .site-page-heading-icon{width:40px;height:40px;flex:0 0 40px;object-fit:contain}
main .site-page-heading-text{min-width:0;overflow-wrap:anywhere}
@media(max-width:600px){main .site-page-heading{gap:10px}main .site-page-heading-icon{width:34px;height:34px;flex-basis:34px}}

.circled-ki{display:inline-flex;align-items:center;justify-content:center;width:1.45em;height:1.45em;box-sizing:border-box;border:1.5px solid currentColor;border-radius:50%;font-size:.8em;line-height:1;vertical-align:.05em;margin-left:.05em;white-space:nowrap}

/* Consistent opening image space across internal pages. */
.page-opening-visual{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(200px,1fr);gap:28px;align-items:start;margin:22px 0 28px;clear:both}.page-opening-copy{min-width:0}.page-opening-copy>p:first-child{margin-top:0}.page-opening-image{box-sizing:border-box;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;width:100%;aspect-ratio:1.35;margin:0;padding:20px;background:#e6ecdf;border:1px solid #d1dccb;border-radius:10px;text-align:center;min-width:0}.page-opening-image>span{font-size:13px;letter-spacing:.07em;color:#617168}.page-opening-image>figcaption{font-size:12px;line-height:1.7;color:#617168}.category-page-opening{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,230px);gap:24px;align-items:center;margin:18px 0 28px}.home .category-page-opening .category-compact-heading{margin:0;justify-content:center}.category-page-opening .page-opening-image{aspect-ratio:1.6}.omega-overview .omega-intro-subtitle{display:block;width:100%;box-sizing:border-box;text-align:center!important;margin-left:auto;margin-right:auto}.omega-overview #definition .page-opening-copy>h2{font-size:24px;line-height:1.65;border:0;padding:0 0 0 14px;border-left:4px solid #8ea08b;margin:0 0 20px}.omega-overview #definition .page-opening-visual{margin-top:0}.page-opening-visual .lead{margin-top:0}
@media(max-width:600px){.page-opening-visual{grid-template-columns:minmax(0,1fr);gap:18px;margin:18px 0 24px}.page-opening-image{aspect-ratio:1.9}.category-page-opening{grid-template-columns:minmax(0,1fr);gap:18px}.category-page-opening .page-opening-image{max-width:100%;aspect-ratio:2.2}.omega-overview #definition .page-opening-copy>h2{font-size:21px}}