:root{--paper:#f7f1e7;--ink:#27231f;--muted:#766b5f;--line:rgba(39,35,31,.14);--clay:#a45f3f;--moss:#7f918b;--wood:#8b715b;--mist:#e5ded2;--shadow:0 30px 80px rgba(77,61,45,.14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Microsoft YaHei",Arial,sans-serif;line-height:1.78;background:radial-gradient(circle at 15% 0,rgba(127,145,139,.18),transparent 30%),linear-gradient(180deg,var(--paper),#efe6d8)}body:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:linear-gradient(90deg,rgba(39,35,31,.035) 1px,transparent 1px),linear-gradient(rgba(39,35,31,.026) 1px,transparent 1px);background-size:38px 38px;mix-blend-mode:multiply}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}p{margin:0 0 18px;color:var(--muted)}.container{width:min(1160px,91vw);margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(247,241,231,.82);backdrop-filter:blur(16px);border-bottom:1px solid 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