:root{--ink:#111216;--muted:#626978;--line:#d9dde5;--paper:#fff;--soft:#f1f3f8;--blue:#1458d4;--lime:#c8ff42;--wrap:min(1180px,calc(100% - 40px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,Helvetica,sans-serif;line-height:1.75;letter-spacing:0}a{text-decoration:none;color:inherit}img{display:block;max-width:100%;height:auto}.wrap{width:var(--wrap);margin:auto}.topbar{height:72px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.97);position:sticky;top:0;z-index:20}.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:11px;font-size:21px}.logo img{border-radius:50%}.topbar nav{display:flex;align-items:center;gap:32px;font-size:14px}.topbar nav>a:not(.cta){padding:22px 0 17px;border-bottom:4px solid transparent}.topbar 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@media(max-width:820px){.phone{width:100px}.phone-back{left:58px;top:4px;transform:none}.phone-front{right:58px;bottom:4px;transform:none}.pair-label{left:50%;right:auto;top:42px;bottom:auto;width:68px;padding:4px;transform:translateX(-50%)}.pair-label strong{font-size:21px}}
@media(max-width:820px){.pair-label{display:none}}