:root{--bg:#F6F4FC;--deep:#E8F2FA;--card:#fff;--ink:#2A2D4A;--text:#3A3E58;--muted:#6A6E88;--soft:#8A8EAA;--purple:#7B6BB5;--blue:#6BA3D6;--lilac:#C9B8E8;--mist:#B8D4F0;--peach:#E8B4B8;--border:rgba(42,45,74,.12);--shadow:0 14px 34px rgba(42,45,74,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,var(--bg),#fff 38%,var(--deep) 100%);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}.wrap{width:min(1140px,calc(100% - 32px));margin:auto}.site-header{position:fixed;inset:0 0 auto;z-index:80;box-shadow:0 1px 0 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