:root{--mist:#F4FAFC;--paper:#FFFFFF;--sea2:#E7F3F6;--ink:#0E3A46;--body:#24505A;--muted:#4A7380;--soft:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--deep:#0F5B68;--pale:#D7EEF2;--line:rgba(26,127,143,.16);--shadow:0 14px 34px rgba(14,58,70,.08);--radius:16px;--header:124px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--mist);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}.wrap{width:min(1180px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;z-index:80;left:0;right:0;top:0}.mist-line{height:20px;background:var(--deep);color:#fff;font-size:11px}.mist-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.mist-brand{color:#fff;letter-spacing:.08em}.icon-text-btn{height:20px;padding:0 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