:root{--ink: #171816;--muted: #62655f;--line: #d9ddd3;--paper: #f6f7f2;--surface: #ffffff;--panel: #eef0ea;--accent: #c52222;--accent-dark: #8c1616;--olive: #69735a;--steel: #2f3b3d;--shadow: 0 18px 48px rgba(20, 24, 18, .14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,Helvetica,sans-serif;line-height:1.5}main section{scroll-margin-top:88px}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.site-header{position:fixed;inset:0 0 auto;z-index:20;display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:28px;min-height:84px;padding:10px clamp(18px,4vw,54px);color:var(--ink);background:#f6f7f2f0;box-shadow:0 8px 30px #1217101f;backdrop-filter:blur(14px);transition:background .18s ease,color .18s ease,box-shadow .18s ease}.site-header.is-solid,.site-header.force-solid{color:var(--ink);background:#f6f7f2f0;box-shadow:0 8px 30px 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