*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;height:auto}body{margin:0;overflow-x:hidden;overflow-y:auto}#root{min-height:100vh;min-height:100dvh;overflow-x:hidden}.app-home{min-height:100dvh;overflow-x:hidden;overflow-y:visible}.app-home-pad{position:relative;z-index:1;width:100%;box-sizing:border-box;padding:52px 12px 48px}@media(max-width:639px){.app-home-pad{padding:68px 10px 40px}}.home-tools-block{display:flex;flex-direction:column;gap:24px;max-width:900px;margin:0 auto 20px;width:100%}.home-tool-grid{display:grid;grid-template-columns:1fr;gap:10px;width:100%}.home-tool-grid>*{width:100%;min-width:0}.home-tool-btn{width:100%;min-width:0;box-sizing:border-box;text-align:center;line-height:1.3;word-break:break-word;-webkit-hyphens:auto;hyphens:auto}.home-tool-btn--barney{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}@media(min-width:520px){.home-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:768px){.home-tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(min-width:960px){.home-tool-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.home-tool-btn{font-size:12px;padding:12px 8px}}.home-hero-chars{display:flex;justify-content:center;flex-wrap:wrap;gap:4px 6px;margin-bottom:10px}.topics-grid{display:grid;grid-template-columns:1fr;gap:10px}@media(min-width:420px){.topics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.barney-chat-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;font-family:Georgia,serif;background:#fff8e6;color:#2a1006}.barney-chat-sidebar{flex-shrink:0;background:#fff3d4;border-right:1px solid rgba(200,135,74,.35);display:flex;flex-direction:column;height:100%;transition:transform .22s ease}.barney-chat-backdrop{display:none}@media(max-width:767px){.barney-chat-sidebar{position:fixed;left:0;top:0;bottom:0;width:min(88vw,280px);z-index:1102;transform:translate(-100%);box-shadow:8px 0 32px #00000073}.barney-chat-sidebar.is-open{transform:translate(0)}.barney-chat-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:1101;background:#0000008c;border:none;padding:0;cursor:pointer}.barney-chat-backdrop.is-open{display:block}}.barney-chat-main{flex:1;display:flex;flex-direction:column;min-width:0;background:#fffcf7}.barney-chat-input-row{display:flex;gap:10px;align-items:flex-end;max-width:720px;margin:0 auto;width:100%}.barney-chat-input-row textarea{flex:1;min-width:0}@media(max-width:639px){.barney-chat-input-row{flex-direction:column;align-items:stretch}.barney-chat-input-row button[type=submit],.barney-chat-input-row .barney-send-btn{width:100%}}.taxonomy-modal-header{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.taxonomy-modal-title-wrap{min-width:0;flex:1 1 200px}.study-nav-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.study-nav-bar .study-nav-center{flex:1 1 120px;min-width:0;text-align:center}.mastery-grid-section{width:100%;display:flex;justify-content:center;margin-top:8px;padding-bottom:16px}.mastery-card-shell{width:fit-content;max-width:100%;margin-left:auto;margin-right:auto}.heatmap-scroll-outer{width:100%;margin-bottom:10px;overflow-x:auto}.heatmap-scroll-inner{display:inline-flex;gap:3px;width:max-content}.heatmap-legend{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.barney-insight-row{position:relative;margin-top:14px;min-height:96px;padding-right:80px}@media(max-width:639px){.barney-insight-row{padding-right:0;padding-bottom:72px}}.sign-in-cta{position:fixed;z-index:1090;max-width:min(220px,calc(100vw - 24px));line-height:1.3;text-align:center;transition:filter .15s,transform .1s}@media(max-width:639px){.sign-in-cta{top:max(8px,env(safe-area-inset-top));right:max(8px,env(safe-area-inset-right));left:auto;font-size:9px!important;padding:8px 12px!important}}@media(max-width:639px){.study-nav-bar .study-nav-center{font-size:11px}}