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blink{50%{opacity:.25}}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}.brand svg{flex:none}.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-name{font-weight:900;font-size:1.1rem;letter-spacing:.04em;color:var(--navy)}.brand-en{font-family:var(--mono);font-size:.68rem;color:var(--teal);letter-spacing:.18em}.gnav ul{list-style:none;display:flex;gap:2px;margin:0;padding:0}.gnav a{display:block;padding:9px 12px;color:var(--ink-2);text-decoration:none;font-weight:700;font-size:.93rem;border-radius:var(--r);border-bottom:2px solid transparent}.gnav a .ch{font-family:var(--mono);font-size:.7rem;color:var(--dim);margin-right:6px;font-weight:400}.gnav a:hover{color:var(--navy);background:var(--bg-2)}.gnav a[aria-current=page]{color:var(--navy);background:var(--teal-bg);border-bottom-color:var(--teal);border-radius:var(--r) 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