/* 160（2026-10-08）ヘッダーの追従：常に表示、最後のCTAで隠す */
html body header.site-header{position:sticky!important;top:0!important;z-index:80!important;transform:none!important;transition:transform .45s cubic-bezier(.22,1,.36,1),opacity .3s,background-color .3s!important}
html body header.site-header.is-hidden{transform:none!important}
html.hd160-off body header.site-header{transform:translateY(-110%)!important;opacity:0;pointer-events:none}
html body.aikata header.site-header{background:rgba(250,250,252,.94)!important;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
html body.aikata header.site-header.wrap{max-width:none!important}
@media(prefers-reduced-motion:reduce){html body header.site-header{transition:none!important}}
/* 172（2026-10-09）AIKATA：スクロール中のヘッダーは薄い紫 */
html body.aikata header.site-header.is-scrolled160{background:rgba(235,229,255,.96)!important}