:root{--bg:#FFFBF3;--bg2:#FFF6E4;--gold-soft:#F8E7B8;--title:#1C1608;--text:#3A3120;--muted:#6B5E43;--note:#8A7B5E;--gold:#D4A017;--gold-bright:#E8C547;--warm:#F0C94A;--deepgold:#B8860B;--border:rgba(212,160,23,.18);--shadow:0 16px 42px rgba(80,55,10,.10);--footer:#1A1508;--header-h:96px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.72;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1280px,calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:50;background:var(--bg);box-shadow:0 5px 24px 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