:root{--background:#f2efe9;--surface:#f2efe9;--text:#1a1814;--muted:#6b6560;--line:#d6d0c6;--accent:#1a1814;--accent-hover:#39332d;--paper:#f2efe9;--ink:#1a1814;--font-body:"SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--content-width:1120px;--space-1:8px;--space-2:16px;--space-3:24px;--space-4:40px;--space-5:64px;--space-6:96px;--space-section:var(--space-6);--nav-h:64px;--ease:cubic-bezier(.22, 1, .36, 1);--duration:.35s;--duration-cover:.55s;--radius-soft:4px;font-family:var(--font-body);color:var(--text);background:var(--background);font-synthesis:none;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 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