:root{--brand:#E85D75;--accent:#D94A63;--orange:#F2A65A;--ink:#252833;--text:#34343C;--muted:#72727D;--bg:#FFF9F7;--soft:#F6F1F0;--line:#E8DEDC;--white:#fff;--max:1160px;--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(var(--max),calc(100% - 40px));margin-inline:auto}.narrow{max-width:840px}.skip{position:absolute;left:-9999px;top:8px;background:#fff;padding:8px 12px;z-index:99}.skip:focus{left:8px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,249,247,.95);border-bottom:1px solid 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