:root{--bg:#f7efe4;--paper:#fffaf2;--ink:#4b3d36;--muted:#8b7569;--tea:#b99a7a;--blue:#b7cbd0;--apricot:#f4d8bc;--rose:#d8aeb2;--line:rgba(95,72,58,.14);--shadow:0 22px 60px rgba(93,72,58,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:radial-gradient(circle at top left,rgba(183,203,208,.35),transparent 32%),linear-gradient(135deg,#fbf5ec,#f7efe4 48%,#f7e7df);line-height:1.75}.site-wrap{overflow:hidden}.container{width:min(1180px,92vw);margin:auto}.topbar{position:sticky;top:0;z-index:20;background:rgba(255,250,242,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 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