:root{--ink:#102238;--muted:#637083;--blue:#075ee8;--cyan:#20c6e8;--navy:#07182d;--soft:#f4f8fc;--line:#dce6ef;--white:#fff;--shadow:0 18px 60px rgba(12,43,78,.11)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic",sans-serif;color:var(--ink);line-height:1.8;background:#fff}a{color:inherit}.wrap{width:min(1180px,90%);margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px;z-index:999}header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid 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