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(max-width:899px){#app{max-width:768px;margin:0 auto}}@media (min-width:900px){#app{max-width:768px;margin:0 auto}.screen.with-nav{display:grid;grid-template-columns:244px minmax(0,1fr);grid-template-areas:"nav top" "nav content"}.screen.with-nav .topbar{grid-area:top;padding:16px 36px}.screen.with-nav .content{grid-area:content;max-width:780px;width:100%;margin:0 auto;padding:30px 40px 72px}.screen.with-nav .bottomnav{grid-area:nav;position:sticky;top:0;align-self:start;height:100vh;display:flex;flex-direction:column;align-items:stretch;gap:6px;padding:22px 14px;border-top:none;border-right:2px solid var(--line)}.nav-brand{display:flex;align-items:baseline;gap:7px;padding:6px 16px 22px}.nav-brand-cn{font-family:var(--mq-zh);font-size:30px;font-weight:800;color:var(--green)}.nav-brand-num{font-size:24px;font-weight:800;color:var(--gold)}.bottomnav .nav-item{flex-direction:row;justify-content:flex-start;gap:14px;padding:14px 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