:root{--primary:#18243a;--gold:#7e9ab8;--paper:#f4efe7;--deep:#8b5b3e;--white:#fff;--ink:#202020;--muted:#666;--line:rgba(32,32,32,.13);--shadow:0 18px 50px rgba(20,20,20,.12);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:#202020;background:#f4efe7}*{box-sizing:border-box}html,body{margin:0;overflow-x:hidden}body{line-height:1.65;background:linear-gradient(180deg,var(--paper),#fff 42%,#f8f3e8);font-size:16px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-wrap{max-width:1180px;margin:auto;padding:13px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;color:var(--primary);font-weight:760;text-decoration:none;white-space:nowrap}.brand-mark{width:34px;height:34px;border-radius:50%;background:radial-gradient(circle at 30% 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