:root{--navy:#061f3d;--navy2:#0b3c68;--blue:#0b6cae;--gold:#c5a15b;--ink:#102235;--muted:#64778a;--pale:#f3f7fa;--line:#dce6ef;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Segoe UI,Arial,"Noto Sans TC",sans-serif;color:var(--ink);line-height:1.65}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}.shell{max-width:1240px;margin:auto;padding:0 28px}.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.nav{height:84px;display:flex;align-items:center;justify-content:space-between}.logo-img{height:64px;width:auto}.menu{display:flex;align-items:center;gap:25px;font-size:14px;font-weight:700}.dropdown{position:relative}.dropbtn{background:none;border:0;font:inherit;padding:28px 0;cursor:pointer}.dropdown-content{display:none;position:absolute;top:68px;left:-18px;min-width:340px;background:white;border:1px solid var(--line);box-shadow:0 20px 45px 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