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@media(max-width:820px){body{padding-bottom:68px}.login-screen{grid-template-columns:1fr}.login-art{min-height:36vh}.brand-lockup h1{font-size:3.5rem}.login-panel{padding:1.4rem}.app-shell{display:block}.sidebar{display:none}.main-content{padding:0 1rem 1.5rem}.topbar{height:84px}.hero-card{min-height:370px;padding:1.5rem;align-items:flex-end}.hero-stamp{position:absolute;right:1.2rem;top:1rem;width:110px;height:110px;border-width:6px;box-shadow:0 0 0 4px #fff,0 7px 0 #111}.hero-stamp b{font-size:2.5rem}.hero-stamp span{font-size:.45rem}.hero-copy h3{font-size:3rem}.dashboard-grid,.two-column,.progress-grid,.nutrition-hero,.admin-grid{grid-template-columns:1fr}.macro-bars{grid-column:auto}.library-grid{grid-template-columns:1fr}.program-banner{align-items:flex-start;flex-direction:column}.program-progress{width:100%}.section-header{align-items:flex-start;flex-direction:column}.journal-cover-card{background:linear-gradient(160deg,#fff 0 72%,#ff8a00 72%);align-items:flex-start;min-height:420px}.journal-cover-card h3{font-size:2.6rem}.journal-mini{width:150px;height:170px;align-self:flex-end}.journal-mini b{font-size:3.4rem}.measurement-grid{grid-template-columns:1fr 1fr}.chat-layout{grid-template-columns:1fr;min-height:650px}.conversation-list{display:none}.admin-stats{grid-template-columns:1fr 1fr}.mobile-nav{display:grid;position:fixed;z-index:30;bottom:0;left:0;right:0;grid-template-columns:repeat(5,1fr);background:#111;padding:.45rem .25rem max(.45rem,env(safe-area-inset-bottom));box-shadow:0 -8px 25px rgba(0,0,0,.18)}.mobile-nav button{border:0;background:transparent;color:#888;display:grid;place-items:center;gap:.15rem;font-size:1rem}.mobile-nav span{font-size:.58rem}.mobile-nav button.active{color:var(--orange)}.food-row{grid-template-columns:1.4fr .7fr .7fr 34px}.food-row .mobile-hide{display:none}.modal{max-height:92vh;overflow:auto}.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.builder-exercise{grid-template-columns:1fr 1fr 1fr}.builder-exercise .builder-name{grid-column:span 3}.check-grid{grid-template-columns:1fr}}