:root{--green:#064b2b;--green2:#08743e;--light:#f4faf7;--ink:#09211a;--muted:#5d716b;--gold:#f0a400;--line:#dfe9e4;--shadow:0 18px 45px rgba(5,55,34,.12)}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.55}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.ogu-container{width:min(1180px,calc(100% - 48px));margin:auto}.ogu-topbar{background:var(--green);color:#fff;font-size:14px}.ogu-topbar-inner{height:38px;display:flex;justify-content:space-between;align-items:center}.ogu-header{background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.06);position:sticky;top:0;z-index:50}.ogu-nav-wrap{height:88px;display:flex;align-items:center;gap:28px}.ogu-logo{display:flex;align-items:center;gap:14px;min-width:225px}.ogu-logo-mark{width:48px;height:48px;border-radius:50%;background:var(--green2);color:#fff;font-weight:900;display:grid;place-items:center}.ogu-logo 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