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(width<=980px){.auth-shell{grid-template-columns:1fr}.auth-showcase{min-height:auto}.studio-page{height:auto;padding-top:58px;overflow:hidden auto}.studio-header{height:58px}.studio-main-nav a:not(.is-active){display:none}.studio-layout{grid-template-columns:1fr;height:auto;min-height:calc(100svh - 58px);overflow-x:hidden}.studio-rail{z-index:10;border-bottom:1px solid #ffffff14;border-right:0;flex-direction:row;padding:8px;position:sticky;top:58px;overflow-x:auto}.studio-rail button{min-width:78px;min-height:62px}.creator-panel{width:calc(100% - 24px);margin:12px auto}.studio-stage{padding:12px;overflow:visible}}@media (width<=720px){.auth-header{width:calc(100% - 20px);top:10px}.auth-nav a span,.app-brand span:last-child{display:none}.auth-shell{width:calc(100% - 24px);padding-top:92px}.auth-showcase,.auth-card{padding:18px}.auth-card{order:-1}.auth-showcase h1{word-break:break-word;font-size:2.1rem}.auth-preview-cluster{grid-template-columns:1fr;gap:10px;height:auto;display:grid;overflow:hidden}.auth-model-card{width:100%;height:142px;position:relative;inset:auto}.model-face{left:auto}.auth-metrics,.provider-grid,.quality-guide,.result-preview,.asset-grid{grid-template-columns:1fr}.studio-header{gap:12px;padding:0 12px}.studio-logo{font-size:1.45rem}.studio-main-nav a{padding:0 10px}.creator-tabs{padding:12px}.panel-scroll{padding:0 12px 12px}.creator-upload,.creator-preview{min-height:220px}.creator-preview{height:220px}.upgrade-banner{flex-direction:column;align-items:stretch;gap:10px}.upgrade-banner span{white-space:normal}.guide-image,.avoid-card .guide-image{min-height:210px}.stage-empty h1,.stage-result h1{font-size:1.3rem}.result-head{flex-direction:column;align-items:flex-start}.support-bubble{width:60px;height:60px;bottom:14px;right:14px}}