:root{--navy:#071d49;--blue:#0875f5;--blue2:#04a7ff;--pale:#eff8ff;--line:#dceaf7;--green:#10b86d;--amber:#f59e0b;--red:#ef4444;--shadow:0 16px 50px rgba(20,79,132,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--navy);font-family:Noto Sans JP,sans-serif;background:#fff;line-height:1.65}a{color:inherit;text-decoration:none}button,input{font:inherit}.site-header{height:76px;display:flex;align-items:center;gap:40px;max-width:1200px;margin:auto;padding:0 24px;background:#fff}.brand{display:flex;align-items:center;font-size:20px;font-weight:900;white-space:nowrap}.brand-mark{display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--blue),#04bfe9);border-radius:10px;width:34px;height:34px;margin-right:9px}.site-header nav{display:flex;gap:28px;font-size:14px;font-weight:700;flex:1}.site-header nav 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