:root{--bg:#fafaf7;--surface:#ffffff;--surface-alt:#f4f3ee;--border:#e3e1d8;--border-strong:#c9c5b6;--text:#1d1c18;--text-muted:#5f5d54;--accent:#2d5a3d;--accent-hover:#234730;--accent-soft:#e8f0eb;--danger:#b3261e;--danger-soft:#fbe9e9;--radius:10px;--radius-sm:6px;--shadow:0 1px 2px rgba(0,0,0,0.04),0 4px 12px rgba(0,0,0,0.04)}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--accent)}button{font-family:inherit;cursor:pointer;border-radius:var(--radius-sm);border:1px solid transparent;transition:background .15s ease,border-color .15s ease,color .15s ease}button:disabled{cursor:not-allowed;opacity:.55}.site-nav{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:rgba(250,250,247,.85);backdrop-filter:saturate(180%) 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