
:root{--ink:#42313a;--muted:#89717a;--coral:#f36e50;--coral-deep:#cc513f;--teal:#208f94;--cream:#fff7e8;--canvas:#fffdf8;--line:#eee3d6;--peach:#ffe2cd;--lilac:#efe8fa;--good:#278c71;--radius:24px}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--canvas);font-family:ui-rounded,'Trebuchet MS',system-ui,sans-serif;font-size:16px;line-height:1.35}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:4px solid #478bd0;outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.55}.svg-defs{position:absolute;width:0;height:0;overflow:hidden}.app-shell{display:flex;min-height:100dvh}.rail{width:228px;flex:0 0 228px;border-right:2px solid var(--line);position:sticky;top:0;height:100dvh;display:flex;flex-direction:column;padding:30px 15px 21px;background:#fffefa}.brand{display:flex;gap:8px;align-items:center;padding:1px 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248px}}@media(max-width:710px){.content-shell{display:block;min-height:100dvh}.mobile-head{height:65px;display:flex;align-items:center;justify-content:space-between;padding:7px 16px;border-bottom:2px solid #f5e9de;background:#fffef8}.mobile-head .brand-burst{font-size:32px}.mobile-head .brand b{font-size:21px}.mobile-head .brand small{font-size:9px}.mobile-help{font-size:13px;border:2px solid #e9d8c5;background:white;border-radius:12px;padding:8px 10px;font-weight:1000}.content{padding:23px 17px 110px}.right-rail{display:none}.bottom-nav{display:flex;position:fixed;z-index:30;bottom:0;left:0;right:0;background:#fffefb;border-top:2px solid #f1e3da;justify-content:space-around;padding:8px max(9px,env(safe-area-inset-left)) calc(7px + env(safe-area-inset-bottom));box-shadow:0 -4px 14px #6b49370a}.bottom-nav button{display:flex;flex-direction:column;gap:3px;align-items:center;border:0;background:transparent;color:#a18b8b;font-weight:1000;font-size:11px;min-width:80px}.bottom-nav button span{font-size:22px}.bottom-nav button.active{color:#e16f50}.hero{min-height:217px;border-radius:23px;padding:21px 152px 22px 21px}.hero-title{font-size:27px}.hero-sub{font-size:11px;margin-bottom:14px}.hero-fox{right:-22px;bottom:-11px;width:205px;height:216px}.hero-bubble{right:7px;top:10px;font-size:10px}.primary{font-size:13px;padding:11px 14px}.chapter-head h2{font-size:20px}.chapter-head{padding:15px}.lesson-wrap{min-height:calc(100dvh - 218px)}.lesson-top{margin-bottom:24px}.lesson-bottom{position:sticky;bottom:76px;background:var(--canvas);padding:12px 0 7px;z-index:5}.collection-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:390px){.hero{padding-right:136px;min-height:205px}.hero-title{font-size:24px}.hero-fox{width:187px;right:-25px}.answer-grid{gap:8px}.answer-option{min-height:142px;padding:9px 5px}.answer-option svg{width:72px;height:75px}.answer-option strong{font-size:12px}.step-label{width:34%;padding:6px}.step-label strong{font-size:11px}.step-label small{font-size:10px}.step-row:nth-child(even) .step-label{right:calc(50% + 54px)}.step-label{left:calc(50% + 54px)}.lesson-bottom .primary{min-width:108px}.stat-chip{padding:6px 9px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}

/* Cookiddoo Play back navigation: safe-area-aware, accessible, no extra bottom tab. */
.academy-home{text-decoration:none;color:inherit}.academy-mobile-home{display:none;text-decoration:none;color:#725348;background:#fff2d9;border:2px solid #eccca5;border-radius:13px;width:44px;height:44px;flex-shrink:0;align-items:center;justify-content:center;font-size:28px;font-weight:900}.academy-mobile-home:focus-visible,.academy-home:focus-visible{outline:4px solid #267b85;outline-offset:2px}
@media(max-width:800px){.academy-mobile-home{display:flex}.mobile-head{gap:7px}.mobile-head .brand{min-width:0}.mobile-head .brand-copy b{font-size:20px}}