:root{--ink:#111715;--paper:#f3faf6;--white:#fff;--red:#d83a3a;--sky:#62b8df;--yellow:#f2cf4a;--mint:#dff2e6;--line:#bfcac4;--muted:#53615a}*{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{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}.shell{width:min(1160px,calc(100% - 48px));margin:0 auto}header{height:72px;background:rgba(243,250,246,.96);border-bottom:1px solid var(--ink);position:sticky;top:0;z-index:30}header .shell{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900}.brand img{border:1px solid var(--ink)}.menu{display:none;width:40px;height:40px;background:transparent;border:1px solid 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span{position:absolute;top:8px;right:8px;font-size:10px;background:var(--red);color:#fff;padding:3px 7px}.gallery-grid img{max-height:465px;width:auto;margin:0 auto}.gallery-grid figcaption{border-bottom:1px solid var(--ink);padding:12px 4px;color:var(--muted)}.links{background:var(--mint)}.links .shell{display:grid;grid-template-columns:1fr 1fr 1fr;border:1px solid var(--ink)}.links .shell>*{padding:26px}.links h2{font-size:32px;margin:6px 0}.links a{border-left:1px solid var(--ink);background:#fff;display:flex;flex-direction:column;justify-content:space-between}.links a span{color:var(--red);font-weight:900;margin-top:30px}.cta{padding:38px 0;background:var(--yellow);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.cta .shell{display:flex;align-items:center;justify-content:space-between}.cta h2{font-size:30px;margin:2px 0}.cta .red{background:var(--ink);border-color:var(--ink)}footer{text-align:center;padding:28px 0;color:var(--muted);font-size:13px}footer p{margin:4px}.page-hero{padding:64px 0;background:#fff;border-bottom:1px solid var(--ink)}.page-hero h1{font-size:48px;line-height:1.15;margin:10px 0 14px;max-width:850px}.page-hero p{font-size:17px;color:var(--muted);max-width:780px}.page-hero .button{margin-top:16px}.article,.faq-section{padding:64px 0}.article-grid{display:grid;grid-template-columns:220px 1fr;gap:64px}.article aside{position:sticky;top:100px;align-self:start;display:flex;flex-direction:column;border-top:4px solid var(--red)}.article aside>*{padding:9px;border-bottom:1px solid var(--line)}.article article{max-width:780px}.article article section{padding-bottom:36px;margin-bottom:36px;border-bottom:1px solid var(--line)}.article h2{font-size:28px;margin:0 0 10px}.article p{color:#3d4842}.article article a{color:var(--red);font-weight:900}.step{font-size:11px;color:#187ea8}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-grid details{background:#fff;border:1px solid var(--line);padding:0 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@media(max-width:640px){.shell{width:min(100% - 28px,1160px)}header,header .shell{height:64px}.menu{display:block}nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--ink);padding:10px 14px;flex-direction:column;align-items:stretch}nav.open{display:flex}nav a{text-align:center}.hero-grid{min-height:auto;padding:20px 0 18px;gap:15px}.code{font-size:10px}.hero-copy h1{font-size:37px;margin:8px 0 12px}.hero-copy>p{font-size:14px}.actions{margin:17px 0}.button{padding:0 15px}.control-notes{margin-top:15px}.control-tower{height:245px}.tower-head{height:30px}.lane.login,.lane.profile{width:76px;top:92px}.lane.history{width:83px;top:46px;box-shadow:6px 6px 0 var(--sky)}.lane i{top:-19px;padding:1px 4px}.switchboard .shell{grid-template-columns:repeat(3,1fr)}.switchboard .shell>div{padding:10px 8px}.switchboard small{display:none}.section{padding:56px 0}.heading h2{font-size:28px}.feature-map{grid-template-columns:1fr}.feature-map article{min-height:auto}.gallery-grid{grid-template-columns:1fr}.gallery-grid figure>div{min-height:auto}.links .shell{grid-template-columns:1fr}.links a{border-left:0;border-top:1px solid var(--ink)}.cta .shell{align-items:flex-start;gap:18px}.cta h2{font-size:23px}.page-hero{padding:42px 0}.page-hero h1{font-size:35px}.article,.faq-section{padding:42px 0}.faq-end{display:block}.faq-end a{display:block;margin-top:8px}}