:root{--paper:#FFF8F2;--white:#FFFFFF;--soft:#F3EBE3;--ink:#1A1230;--text:#2C2440;--muted:#5A5270;--light:#8A8298;--pink:#E11D8F;--indigo:#6366F1;--cyan:#0891B2;--amber:#D97706;--mint:#059669;--line:rgba(26,18,48,.10);--shadow:0 14px 34px rgba(26,18,48,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;line-height:1.75;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto;object-fit:contain}button{font:inherit}.wrap{width:min(1160px,calc(100% - 32px));margin:auto}.site-header{position:fixed;inset:0 0 auto 0;z-index:50;background:var(--paper);border-bottom:1px solid var(--line)}.masthead{height:72px;display:grid;grid-template-columns:1fr auto 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