/* Shared shell, from the approved diagnosis V3 release. No diagnosis interaction selectors. */
:root{--color-primary-700:#164a7b;--color-primary-600:#1c5d99;--color-primary-100:#eaf3fa;--color-text:#17212b;--color-muted:#5b6570;--color-border:#d8dee5;--color-bg:#fff;--color-bg-subtle:#f6f8fa;--color-focus:#164a7b;--color-warning:#785018;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic UI",Meiryo,sans-serif;color:var(--color-text);background:var(--color-bg);font-size:16px;line-height:1.75;overflow-wrap:anywhere}
*{box-sizing:border-box}
body{margin:0}
a{color:var(--color-primary-700);text-underline-offset:4px}
button:focus-visible,a:focus-visible,summary:focus-visible,.home-page [tabindex]:focus-visible{outline:3px solid var(--color-focus);outline-offset:4px}
h1,h2,h3,p,ul{margin-top:0}
h1{font-size:2rem;line-height:1.5;letter-spacing:.01em;margin-bottom:20px;font-weight:700}
h2{font-size:1.35rem;line-height:1.5;margin-bottom:20px}
h3{font-size:1.1rem;line-height:1.6;margin-bottom:12px}
p{margin-bottom:16px}
.skip{position:absolute;left:16px;top:-80px;background:#fff;padding:12px;z-index:10;min-height:44px}
.skip:focus{top:8px}
.site-header{border-bottom:1px solid var(--color-border)}
.header-inner{max-width:1120px;margin:auto;min-height:88px;padding:16px 32px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.brand{font-size:1.45rem;font-weight:750;color:var(--color-primary-700);text-decoration:none;display:flex;flex-direction:column;min-height:44px;flex-shrink:0}
.brand span{font-size:.75rem;font-weight:400;color:var(--color-muted);letter-spacing:.03em}
.site-nav{display:flex;flex-wrap:wrap;gap:4px 24px;align-items:center}
.site-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;font-size:.875rem;text-decoration:none}
.site-nav a:hover,.site-nav a[aria-current]{text-decoration:underline;text-underline-offset:6px}
.site-nav a[aria-current]{font-weight:600}
main{max-width:1040px;padding:48px 32px 64px;margin:auto;min-height:calc(100svh - 285px)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:12px 28px;border:2px solid var(--color-primary-700);border-radius:5px;background:var(--color-primary-700);color:#fff;font-weight:600;text-decoration:none;text-align:center;line-height:1.6}
.button:hover{background:#103c66;border-color:#103c66;text-decoration:underline}
.button:active{background:#103c66;border-color:#103c66}
.secondary{background:#fff;color:var(--color-primary-700)}
.secondary:hover,.secondary:active{background:var(--color-primary-100);border-color:var(--color-primary-700)}
.site-footer{border-top:1px solid var(--color-border);padding:24px 32px 32px;max-width:1120px;margin:auto;color:var(--color-muted);font-size:.8rem}
.site-footer p{margin-bottom:8px}
.site-footer nav{display:flex;flex-wrap:wrap;gap:4px 24px}
.site-footer a{display:inline-flex;align-items:center;min-height:44px}
.site-footer small{font-size:.75rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media(max-width:640px){
  .header-inner{padding:12px 20px;min-height:76px;flex-direction:column;align-items:flex-start;gap:4px}
  .brand{font-size:1.25rem}.brand span{font-size:.65rem}
  .site-nav{gap:4px 20px}
  main{padding:32px 20px 48px}
  h1{font-size:1.65rem}
  .site-footer{padding:24px 20px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}