
:root{--navy:#0c2f5f;--blue:#1d75bd;--blue2:#eaf4ff;--ink:#172033;--muted:#667085;--line:#e4eaf1;--bg:#f7f9fc;--white:#fff;--success:#18794e;--danger:#b42318}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Helvetica Neue",Arial,sans-serif;color:var(--ink);line-height:1.75;background:#fff}a{color:inherit;text-decoration:none}.container{max-width:1180px;margin:auto;padding:0 28px}header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:13px}.brand img{width:176px;max-width:42vw}.legal{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:13px}.navlinks{display:flex;align-items:center;gap:24px;font-size:14px;font-weight:700}.lang{padding:7px 11px;border:1px 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