:root{--bg:#FFFCF6;--bg2:#F8F3E8;--soft:#FBF0CE;--line:rgba(154,110,18,.18);--line2:rgba(201,154,39,.42);--ink:#1C170D;--text:#393124;--muted:#6B604C;--gold:#C99A27;--deep:#9A6E12;--brown:#211B10;--shadow:0 14px 36px rgba(61,45,15,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.82;overflow-x:hidden}.shell{width:min(1320px,calc(100% - 40px));margin:auto}.age-line{height:26px;background:var(--brown);color:var(--soft);font-size:12px;line-height:26px}.age-line .shell{display:flex;justify-content:space-between;gap:20px}.site-header{position:sticky;top:0;z-index:60;background:rgba(255,252,246,.97);border-bottom:1px solid var(--line2);box-shadow:0 5px 16px rgba(61,45,15,.05)}.header-grid{height:78px;display:grid;grid-template-columns:1fr auto 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