:root{--bg:#f7f7f3;--ink:#171717;--muted:#555650;--soft:#777870;--line:#deded6;--panel:#fff;--accent:#1f5f55;--accent-dark:#17483f;--paper:#fbfbf7;--wash:#ecece3}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,var(--paper),var(--bg) 38%,#efefe8);color:var(--ink);font-family:Satoshi,Geist,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}body:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:linear-gradient(rgba(23,23,23,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(23,23,23,.03) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(180deg,rgba(0,0,0,.38),transparent 56%)}a{color:inherit;text-decoration:none}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px clamp(18px,4vw,56px);border-bottom:1px solid 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