:root{--ink:#15130f;--paper:#fffaf0;--paper2:#f8edcf;--card:#fff;--yellow:#f6c927;--yellow2:#ffe582;--red:#b94f3a;--muted:#6f624f;--line:rgba(21,19,15,.14);--shadow:0 18px 42px rgba(35,28,12,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#fffdf7 0,#fff7e6 100%);color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden;padding-top:118px}a{color:inherit;text-decoration:none}button,input{font:inherit}.masthead{position:fixed;z-index:60;top:0;left:0;right:0;background:#15130f;color:#fffaf0;border-bottom:4px solid var(--yellow)}.masthead-inner{max-width:1100px;height:72px;margin:auto;display:flex;align-items:center;gap:14px;padding:0 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