:root{--forest: #1f6b3a;--forest-d: #16472a;--clay: #d98c5f;--clay-d: #b96b3e;--cream: #f7f3ea;--paper: #fffdf8;--paper-2: #fffdf8;--ink: #23271f;--muted: #6c6a5e;--line: rgba(35, 39, 31, .12);--display: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Noto Sans TC", "Source Han Sans SC", "WenQuanYi Micro Hei", sans-serif;--body: "Inter", system-ui, sans-serif;--radius: 20px;--shadow: 0 22px 50px -24px rgba(22, 71, 42, .4)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Microsoft YaHei,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:20px clamp(20px,5vw,64px);transition:background .4s,box-shadow .4s,padding .4s}.nav 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