:root{--ink: #10222e;--muted: #51707f;--brand: #6d28d9;--brand-dark: #5b21b6;--accent: #f2a007;--bg: #f6f9fa;--card: #ffffff;--line: #d9e5ea;--ok: #177245;--warn: #9a6700;--err: #b42318;--radius: 14px;--shadow: 0 10px 30px rgba(16, 34, 46, .14)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}a{color:var(--brand-dark)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}.wrap{max-width:1060px;margin:0 auto;padding:0 16px}header.site{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}header.site 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