:root{--bg-page-base:rgb(243 243 240/1);--bg-page-mid:rgb(236 235 229/1);--bg-page-deep:rgb(229 228 221/1);--bg-page:var(--bg-page-base);--bg-page-gradient:linear-gradient(168deg,var(--bg-page-base) 0%,var(--bg-page-mid) 38%,var(--bg-page-base) 72%,var(--bg-page-deep) 100%);--bg-surface:#ffffff;--bg-surface-soft:color-mix(in srgb,var(--bg-surface) 72%,var(--bg-page-mid) 28%);--header-bg:color-mix(in srgb,var(--bg-page-base) 88%,transparent);--text-primary:#1a1a1a;--text-muted:#525250;--text-faint:#73736e;--text-prose:color-mix(in srgb,var(--text-muted) 88%,var(--text-faint) 12%);--accent:#009b72;--accent-bright:#00c896;--accent-soft:#dff8f1;--accent-soft-border:#b3e8d9;--border-default:#d1d1cd;--border-subtle:#e6e6e2;--border-strong:#b8b8b2;--btn-primary-bg:var(--accent);--btn-primary-fg:#ffffff;--code-block-bg:#121816;--code-block-border:#24302c;--code-bar-bg:#0d1311;--code-bar-label:#9dd9c9;--shadow-card:0 4px 20px rgba(26,26,26,0.08);--font-ui:system-ui,-apple-system,"Segoe 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