:root{--paper:#f4f0e7;--white:#fbf8f1;--ink:#1a160f;--ink2:#3a342a;--mute:#6f6555;--rule:#1a160f29;--rule2:#1a160f4d;--bronze:#8f6532;--bronzesoft:#8f65321a;--serif:"Noto Serif JP",serif;--sans:"Noto Sans JP",system-ui,sans-serif;--label:"Inter",sans-serif}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased}body{background:var(--paper);color:var(--ink);font-family:var(--sans);letter-spacing:.014em;margin:0;line-height:1.9}a{color:var(--bronze)}.wrap{max-width:720px;margin:0 auto;padding:0 24px}.label{font-family:var(--sans);letter-spacing:.08em;color:var(--bronze);font-size:12.5px;font-weight:700}.site-header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--rule);z-index:10;background:#f4f0e7e6;position:sticky;top:0}.site-header .wrap{justify-content:space-between;align-items:center;max-width:1100px;height:72px;display:flex}.brand{align-items:center;gap:13px;display:flex}.brand img{height:30px}.brand 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