:root{--series-ink:#12364a;--series-blue:#176183;--series-soft:#eef6f8;--series-line:#d3e1e6;--series-white:#fff;--series-focus:#f0b548;--series-max:1180px}
*{box-sizing:border-box}
body{margin:0;color:var(--series-ink);background:var(--series-soft);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif}
.skip-link{position:fixed;z-index:100;left:10px;top:8px;padding:8px 12px;border-radius:7px;background:var(--series-ink);color:#fff;transform:translateY(-150%)}.skip-link:focus{transform:none}
.container,.header-inner,.series-nav-inner{width:min(calc(100% - 36px),var(--series-max));margin-inline:auto}
.site-header{position:sticky;z-index:30;top:0;background:rgba(255,255,255,.96);border-bottom:1px solid var(--series-line);backdrop-filter:blur(10px)}
.header-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:inherit}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--series-ink);color:#fff;font-size:12px;font-weight:900}.brand strong,.brand small{display:block;line-height:1.1}.brand strong{font-size:13px}.brand small{color:#607581;font-size:10px}.tool-number,.header-note{padding:5px 9px;border-radius:999px;background:var(--series-soft);color:#607581;font-size:10px;font-weight:800}
.series-nav{border-bottom:1px solid var(--series-line);background:#fff}.series-nav-inner{display:flex;align-items:center;gap:4px;min-height:38px;overflow-x:auto;scrollbar-width:none}.series-nav-inner::-webkit-scrollbar{display:none}.series-nav a{flex:none;padding:6px 10px;border-radius:999px;color:#526d7b;text-decoration:none;font-size:11px;font-weight:800}.series-nav a:hover,.series-nav a[aria-current="page"]{background:#e7f3f7;color:var(--series-blue)}
.checker-shell{padding-top:18px}.page-intro{margin-bottom:12px}.page-intro h1{font-size:clamp(25px,3vw,37px)}.checker-card{border-radius:16px;box-shadow:0 10px 28px rgba(18,54,74,.07)}
.selection-status,.input-status.sr-status{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.site-footer{padding:20px 0;background:#0e2a3a;color:#dfe9ee}.site-footer .container{display:flex;align-items:center;justify-content:space-between;gap:30px}.site-footer strong{color:#fff;font-size:12px}.site-footer p{margin:0;color:#b7cad3;font-size:10px}
button:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid var(--series-focus)!important;outline-offset:2px}
.hub-main{padding:24px 0 44px}.hub-hero{display:grid;grid-template-columns:1.35fr .65fr;align-items:end;gap:30px;padding:22px 0 18px}.hub-eyebrow{margin:0 0 5px;color:var(--series-blue);font-size:11px;font-weight:900;letter-spacing:.12em}.hub-hero h1{max-width:760px;margin:0;font-size:clamp(30px,4vw,48px);line-height:1.2}.hub-lead{max-width:760px;margin:9px 0 0;color:#58717e;font-size:14px}.hub-count{justify-self:end;padding:14px 18px;border:1px solid var(--series-line);border-radius:14px;background:#fff;text-align:center}.hub-count strong,.hub-count span{display:block}.hub-count strong{color:var(--series-blue);font-size:30px;line-height:1}.hub-count span{margin-top:5px;color:#647a85;font-size:10px;font-weight:800}
.hub-section{margin-top:14px}.hub-section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:9px}.hub-section h2{margin:0;font-size:18px}.hub-section-heading p{margin:0;color:#607581;font-size:11px}.tool-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.tool-card{display:flex;min-height:188px;flex-direction:column;padding:16px;border:1px solid var(--series-line);border-radius:15px;background:#fff;color:inherit;text-decoration:none;box-shadow:0 8px 22px rgba(18,54,74,.05);transition:transform .15s,border-color .15s}.tool-card:hover{transform:translateY(-2px);border-color:#8eb6c6}.tool-card-number{color:var(--series-blue);font-size:10px;font-weight:900;letter-spacing:.1em}.tool-card h3{margin:9px 0 5px;font-size:18px}.tool-card p{margin:0;color:#5f7580;font-size:12px}.tool-card-cta{margin-top:auto;padding-top:14px;color:var(--series-blue);font-size:11px;font-weight:900}.research-strip{display:flex;flex-wrap:wrap;gap:5px;padding:12px;border:1px solid var(--series-line);border-radius:13px;background:#fff}.research-strip span{padding:5px 9px;border-radius:999px;background:var(--series-soft);color:#496674;font-size:10px;font-weight:800}.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:7px}.article-link{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 13px;border:1px solid var(--series-line);border-radius:11px;background:#fff;color:inherit;text-decoration:none;font-size:12px;font-weight:800}.article-link::after{content:"↗";color:var(--series-blue)}.article-link:hover{border-color:#8eb6c6}
.coverage-count{display:grid;min-width:170px;padding:8px 11px;border:1px solid #bed5dd;border-radius:10px;background:#eef7fa;color:#536d79;font-size:10px!important;line-height:1.25}.coverage-count strong{color:var(--series-blue);font-size:18px}.coverage-count span{font-size:9px}
@media(max-width:800px){.hub-hero{grid-template-columns:1fr}.hub-count{display:none}.tool-cards{grid-template-columns:1fr}.tool-card{min-height:142px}.article-list{grid-template-columns:1fr}}
@media(max-width:600px){.container,.header-inner,.series-nav-inner{width:calc(100% - 24px)}.header-inner{height:52px}.header-note,.tool-number{display:none}.series-nav-inner{width:100%;padding-inline:8px}.series-nav a{padding:7px 8px;font-size:10px}.checker-shell{padding-top:12px}.hub-main{padding:14px 0 30px}.hub-hero{display:block;padding:8px 0 12px}.hub-hero h1{font-size:27px}.hub-lead{font-size:12px}.hub-section-heading{display:block}.hub-section-heading p{margin-top:3px}.tool-card{min-height:132px;padding:14px}.site-footer .container{display:block}.site-footer p{margin-top:5px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important}}