:root{--paper:#f4f4ef;--card:#fafaf7;--ink:#27312d;--muted:#818b84;--line:#dfe4de;--sage:#dfe8df;--dark:#26322c;--accent:#b56c44;--peach:#eee0d6;--shadow:0 28px 80px rgba(45,56,49,.11)}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;overflow-x:hidden;background:var(--paper);color:var(--ink);font-family:Inter,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.nav{position:sticky;top:0;z-index:20;height:76px;padding:0 max(28px,calc((100vw - 1220px)/2));display:flex;align-items:center;gap:40px;background:rgba(244,244,239,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(39,49,45,.07)}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:750;letter-spacing:.02em}.brand-logo{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:#fff8e8;box-shadow:0 8px 24px rgba(94,67,42,.12);overflow:hidden}.brand-logo 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