:root{--bg:#F7FAF2;--deep:#E4F0D4;--card:#FFFEF8;--ink:#3A4A34;--title:#2E4A28;--muted:#5A6A52;--soft:#7A8A72;--green:#6FA83A;--leaf:#3D7A32;--pale:#C5E08A;--yellow:#F4E8A8;--line:rgba(46,74,40,.14);--shadow:0 14px 34px rgba(46,74,40,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}.shell{width:min(1140px,calc(100% - 32px));margin-inline:auto}.top-stack{position:fixed;inset:0 0 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