:root{--navy:#061827;--navy2:#0a2639;--blue:#1687e8;--cyan:#52c7ef;--yellow:#ffd23f;--ink:#132333;--muted:#667786;--line:#dfe8ee;--bg:#f5f8fa;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--white);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans JP,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.header{border-bottom:1px solid var(--line);z-index:50;background:#fff;align-items:center;gap:34px;height:76px;padding:0 max(24px,50vw - 590px);display:flex;position:sticky;top:0}.brand{letter-spacing:-1.5px;grid-template-columns:auto auto;justify-content:start;align-items:center;width:200px;font-size:25px;font-weight:900;line-height:1;display:grid}.brand span{color:#0d2031}.brand b{color:var(--blue)}.brand small{letter-spacing:.4px;color:#6c8190;grid-column:1/3;margin-top:4px;font-size:9px}.header nav{gap:30px;font-size:14px;font-weight:700;display:flex}.header nav 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