.b4a-ggu{position:relative;--ink:#18264a;--muted:#667085;--line:#eadfd8;--cream:#fffaf5;--pink:#ef8f9f;--gold:#f3c967;--blue:#5367c8;--teal:#3bb7b0;--good:#247a52;--bad:#a33a48;box-sizing:border-box;max-width:1180px;margin:1rem auto;background:linear-gradient(180deg,#fffdf9,#fff7f2);color:var(--ink);border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 14px 40px rgba(35,28,35,.12);font-family:ui-rounded,"Trebuchet MS",system-ui,sans-serif;min-height:680px}.b4a-ggu *{box-sizing:border-box}.b4a-ggu button{font:inherit}.b4a-ggu__topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 1rem;background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:4}.b4a-ggu__brand{display:flex;align-items:baseline;gap:.55rem;min-width:0}.b4a-ggu__brand strong{font-size:1.15rem}.b4a-ggu__brand span{font-size:.82rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.b4a-ggu__status{display:flex;gap:.35rem;align-items:center}.b4a-ggu__status>span{font-weight:800;min-width:62px}.b4a-ggu__status button,.b4a-ggu__footerline button{border:1px solid var(--line);background:#fff;border-radius:11px;padding:.48rem .62rem;cursor:pointer}.b4a-ggu__status button:hover,.b4a-ggu__footerline button:hover{transform:translateY(-1px)}.b4a-ggu__body{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:620px}.b4a-ggu__nav{padding:.75rem;background:#fff;border-right:1px solid var(--line);overflow:auto;max-height:620px}.b4a-ggu__nav button{width:100%;display:block;text-align:left;border:0;background:transparent;padding:.58rem .7rem;border-radius:12px;color:var(--ink);cursor:pointer;margin:.1rem 0;font-size:.91rem}.b4a-ggu__nav button:hover{background:#fff3f2}.b4a-ggu__nav button.is-active{background:linear-gradient(90deg,#ffe5e4,#fff1df);font-weight:800;box-shadow:inset 3px 0 var(--pink)}.b4a-ggu__stage{padding:1rem;display:flex;flex-direction:column;min-width:0}.b4a-ggu__scene{display:grid;grid-template-columns:minmax(170px,32%) 1fr;gap:1rem;align-items:center;min-height:295px;border:1px solid var(--line);border-radius:20px;padding:1rem;background:radial-gradient(circle at 18% 20%,#fff7d9,transparent 32%),linear-gradient(135deg,#fff,#fff8f3)}.b4a-ggu__visual{min-height:235px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(180deg,#edf8ff,#fff5e9);position:relative;overflow:hidden;border:1px dashed #dfd3cc}.b4a-ggu__mascot{font-size:6rem;filter:drop-shadow(0 8px 12px rgba(0,0,0,.12));transition:.3s transform,.3s filter}.b4a-ggu__eyebrow{margin:0 0 .2rem;text-transform:uppercase;font-size:.75rem;font-weight:900;letter-spacing:.08em;color:#b55467}.b4a-ggu h2{font-size:clamp(1.5rem,4vw,2.5rem);margin:.2rem 0 .55rem;line-height:1.05}.b4a-ggu__copy>p:not(.b4a-ggu__eyebrow){font-size:1.03rem;line-height:1.55}.b4a-ggu__feedback{min-height:3.1em;font-weight:750}.b4a-ggu__answers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem;margin-top:.85rem}.b4a-ggu__answers>button,.b4a-ggu__chip{border:2px solid #e1d7d1;background:white;border-radius:15px;min-height:56px;padding:.7rem 1rem;color:var(--ink);font-weight:750;cursor:pointer;box-shadow:0 4px 0 #eee1da;transition:.12s transform,.12s background,.12s border}.b4a-ggu__answers>button:hover,.b4a-ggu__chip:hover{transform:translateY(-2px);border-color:#c9b9b1}.b4a-ggu__answers button.is-correct{background:#e6f7ed;border-color:#67b88a;box-shadow:0 4px 0 #b8dfc9}.b4a-ggu__answers button.is-wrong{background:#fff0f1;border-color:#e5a1a9;animation:b4aShake .22s}.b4a-ggu__footerline{display:flex;justify-content:space-between;align-items:center;gap:.7rem;margin-top:auto;padding-top:.8rem;color:var(--muted);font-size:.83rem}.b4a-ggu__footerline [data-next]{background:var(--ink);color:#fff;border-color:var(--ink);margin-left:auto}.b4a-ggu__sentence{grid-column:1/-1;border:2px solid #e2c9d0;background:#fff;padding:1rem;border-radius:16px;font-size:clamp(1.2rem,3vw,1.8rem);text-align:center;line-height:1.5}.b4a-ggu__slots{grid-column:1/-1;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:.4rem}.b4a-ggu__slot{background:#fff;border:1px dashed #c7b8b0;border-radius:12px;padding:.55rem;text-align:center;min-width:0}.b4a-ggu__slot small{display:block;color:var(--muted);font-size:.68rem;text-transform:uppercase}.b4a-ggu__slot select{width:100%;margin-top:.3rem;border:1px solid #ddd;border-radius:8px;padding:.42rem;background:#fff}.b4a-ggu__world-object{font-size:6rem;display:block;transition:.35s transform,.35s filter,.35s opacity}.b4a-ggu__box{width:130px;height:95px;border:8px solid #b47842;border-top:0;background:#e7ba78;position:relative;margin-top:80px}.b4a-ggu__placed{position:absolute;font-size:4rem;left:50%;transform:translateX(-50%);transition:.4s all}.b4a-ggu__placed.in{top:-18px}.b4a-ggu__placed.on{top:-90px}.b4a-ggu__placed.under{top:88px}.b4a-ggu__placed.behind{top:-15px;opacity:.35;transform:translateX(-50%) scale(.75)}.b4a-ggu__placed.beside{top:-18px;left:150%}.b4a-ggu__bridge{display:flex;align-items:center;width:100%;gap:.5rem}.b4a-ggu__cliff{flex:1;background:#f7e3c0;padding:.8rem;border-radius:14px;font-weight:800}.b4a-ggu__gap{font-size:2.6rem}.b4a-ggu__dashboard{grid-column:1/-1}.b4a-ggu__stats{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;margin-bottom:.7rem}.b4a-ggu__stat{background:#fff;border:1px solid var(--line);padding:.8rem;border-radius:14px}.b4a-ggu__stat b{display:block;font-size:1.45rem}.b4a-ggu__mastery-row{display:grid;grid-template-columns:125px 1fr 48px;align-items:center;gap:.5rem;margin:.45rem 0}.b4a-ggu__meter{height:10px;background:#eee;border-radius:10px;overflow:hidden}.b4a-ggu__meter i{height:100%;display:block;background:linear-gradient(90deg,#6fc4b3,#5d72cc)}.b4a-ggu__toast{position:absolute;right:1rem;bottom:1rem;background:#18264a;color:#fff;padding:.55rem .8rem;border-radius:10px;opacity:0;pointer-events:none;transition:.2s opacity}.b4a-ggu__toast.show{opacity:1}.b4a-ggu.is-celebrating .b4a-ggu__mascot{transform:scale(1.25) rotate(-6deg)}.b4a-ggu[data-muted="true"] [data-mute]{opacity:.55}.b4a-ggu:fullscreen{max-width:none;width:100vw;height:100vh;margin:0;border-radius:0}.b4a-ggu:fullscreen .b4a-ggu__body{min-height:calc(100vh - 58px)}.b4a-ggu:fullscreen .b4a-ggu__nav{max-height:calc(100vh - 58px)}
@keyframes b4aShake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
@media(max-width:760px){.b4a-ggu{min-height:620px;border-radius:18px}.b4a-ggu__brand span{display:none}.b4a-ggu__body{display:block;min-height:560px}.b4a-ggu__nav{display:none;position:absolute;z-index:8;left:.5rem;right:.5rem;top:58px;max-height:75vh;border:1px solid var(--line);border-radius:16px;box-shadow:0 14px 40px rgba(0,0,0,.18)}.b4a-ggu__nav.is-open{display:block}.b4a-ggu__stage{padding:.65rem}.b4a-ggu__scene{grid-template-columns:1fr;min-height:330px;padding:.75rem}.b4a-ggu__visual{min-height:145px}.b4a-ggu__mascot,.b4a-ggu__world-object{font-size:4.3rem}.b4a-ggu__answers{grid-template-columns:1fr}.b4a-ggu__slots{grid-template-columns:repeat(2,minmax(0,1fr))}.b4a-ggu__footerline [data-reset]{font-size:.75rem}.b4a-ggu__stats{grid-template-columns:1fr}.b4a-ggu__mastery-row{grid-template-columns:95px 1fr 42px}}
@media(prefers-reduced-motion:reduce){.b4a-ggu *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(prefers-contrast:more){.b4a-ggu{--line:#7d7270}.b4a-ggu__answers>button{border-color:#4b4645}}

/* v0.9.1 real-device compact mobile pass */
@media(max-width:760px){
  .b4a-ggu{min-height:0!important;margin:.35rem auto!important;border-radius:16px!important}
  .b4a-ggu__topbar{padding:.38rem .45rem!important;gap:.3rem!important}
  .b4a-ggu__brand{flex:0 1 auto;min-width:0;overflow:hidden}
  .b4a-ggu__brand strong{font-size:0;white-space:nowrap}
  .b4a-ggu__brand strong:after{content:'Grammar Goof-Up';font-size:.94rem;font-weight:900}
  .b4a-ggu__status{margin-left:auto;gap:.22rem!important;flex:0 0 auto}
  .b4a-ggu__status>span{min-width:40px!important;font-size:.8rem}
  .b4a-ggu__status button{width:38px!important;height:38px!important;min-width:38px!important;min-height:38px!important;padding:0!important;margin:0!important;border-radius:10px!important;display:grid!important;place-items:center!important;font-size:1rem!important;line-height:1!important}
  .b4a-ggu__body{min-height:0!important}
  .b4a-ggu__stage{padding:.5rem!important}
  .b4a-ggu__scene{grid-template-columns:108px minmax(0,1fr)!important;gap:.65rem!important;align-items:center!important;min-height:170px!important;padding:.65rem!important;border-radius:16px!important}
  .b4a-ggu__visual{min-height:132px!important;height:132px!important;border-radius:14px!important}
  .b4a-ggu__mascot,.b4a-ggu__world-object{font-size:3.45rem!important}
  .b4a-ggu__eyebrow{font-size:.64rem!important;margin:0 0 .12rem!important}
  .b4a-ggu h2{font-size:1.38rem!important;line-height:1.06!important;margin:.08rem 0 .28rem!important}
  .b4a-ggu__copy>p:not(.b4a-ggu__eyebrow){font-size:.9rem!important;line-height:1.3!important;margin:.25rem 0!important}
  .b4a-ggu__feedback{min-height:2.4em!important;font-size:.82rem!important}
  .b4a-ggu__answers{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:.48rem!important;margin-top:.52rem!important}
  .b4a-ggu__answers>button,.b4a-ggu__chip{min-height:50px!important;height:auto!important;padding:.52rem .55rem!important;margin:0!important;border-radius:13px!important;font-size:.94rem!important;line-height:1.15!important;box-shadow:0 3px 0 #eee1da!important}
  .b4a-ggu__footerline{padding-top:.55rem!important;gap:.4rem!important;font-size:.72rem!important;flex-wrap:wrap}
  .b4a-ggu__footerline button{min-height:38px!important;padding:.38rem .55rem!important;margin:0!important;font-size:.72rem!important}
  .b4a-ggu__nav{top:48px!important}
  .b4a-ggu__slots{grid-template-columns:repeat(2,minmax(0,1fr))!important}
  .b4a-ggu__sentence{padding:.65rem!important;font-size:1.05rem!important}
  .b4a-ggu__box{transform:scale(.72);margin-top:40px}
  .b4a-ggu__bridge{font-size:.7rem;gap:.25rem}
  .b4a-ggu__cliff{padding:.45rem!important}
  .b4a-ggu__gap{font-size:1.6rem!important}
}
@media(max-width:390px){
  .b4a-ggu__brand strong:after{content:'Grammar';font-size:.88rem}
  .b4a-ggu__status>span{min-width:34px!important}
  .b4a-ggu__status button{width:36px!important;height:36px!important;min-width:36px!important;min-height:36px!important}
  .b4a-ggu__scene{grid-template-columns:92px minmax(0,1fr)!important}
  .b4a-ggu__visual{height:118px!important;min-height:118px!important}
}

/* v0.9.2 visual containment hotfix: native emoji must never wrap/crop in compact scene cards */
.b4a-ggu__visual{isolation:isolate}
.b4a-ggu__world-object,.b4a-ggu__mascot{
  max-width:100%;
  white-space:nowrap;
  line-height:1!important;
  text-align:center;
  overflow:visible;
  transform-origin:center center;
}
@media(max-width:760px){
  .b4a-ggu__visual{padding:.35rem!important;overflow:hidden!important}
  .b4a-ggu__world-object,.b4a-ggu__mascot{font-size:2.65rem!important;letter-spacing:-.14em}
  .b4a-ggu__world-object[data-transform]{letter-spacing:0}
  .b4a-ggu__placed{letter-spacing:0!important}
  .b4a-ggu:fullscreen .b4a-ggu__stage{justify-content:flex-start!important}
}
@media(max-width:390px){
  .b4a-ggu__world-object,.b4a-ggu__mascot{font-size:2.35rem!important}
}

/* v0.10.0 learning lab, expanded-content, and mobile menu pass */
.b4a-ggu__viewtabs{display:flex;gap:.45rem;margin:0 0 .65rem;align-items:center}
.b4a-ggu__viewtabs[hidden]{display:none!important}
.b4a-ggu__viewtabs button{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:999px;padding:.5rem .8rem;font-weight:800;cursor:pointer}
.b4a-ggu__viewtabs button.is-active{background:linear-gradient(90deg,#ffe5e4,#fff1df);border-color:#e6c6c2;box-shadow:inset 0 0 0 1px #fff}
.b4a-ggu__lesson{grid-column:1/-1;background:#fff;border:1px solid var(--line);border-radius:18px;padding:1rem;box-shadow:0 5px 0 #f1e7df}
.b4a-ggu__lesson h3{margin:.05rem 0 .35rem;font-size:1rem;color:var(--ink)}
.b4a-ggu__lesson p{margin:.2rem 0 .75rem;line-height:1.45}
.b4a-ggu__lesson ul{margin:.25rem 0 .4rem;padding-left:1.25rem}
.b4a-ggu__lesson li{margin:.35rem 0;line-height:1.35}
.b4a-ggu__lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.b4a-ggu__memory{background:#fff7d9;border-left:4px solid var(--gold);padding:.65rem .75rem;border-radius:10px}
.b4a-ggu__examples{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--line)}
.b4a-ggu__examples mark{background:#ffe0e6;color:var(--ink);padding:.05em .18em;border-radius:.3em;font-weight:900}
.b4a-ggu__lesson-actions{grid-column:1/-1;display:flex;gap:.55rem;justify-content:flex-end}
.b4a-ggu__lesson-actions button{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;min-height:46px;padding:.55rem .85rem;font-weight:800;cursor:pointer}
.b4a-ggu__lesson-actions button.is-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.b4a-ggu__backdrop{position:fixed;inset:0;border:0;background:rgba(18,25,44,.32);z-index:99990;padding:0;margin:0;width:100vw;height:100dvh}
.b4a-ggu__backdrop[hidden]{display:none!important}
body.b4a-ggu-menu-open{overscroll-behavior:none}

@media(max-width:760px){
  .b4a-ggu__viewtabs{margin:0 0 .42rem!important;gap:.35rem!important}
  .b4a-ggu__viewtabs button{padding:.4rem .65rem!important;font-size:.78rem!important;min-height:36px!important}
  .b4a-ggu__nav,.b4a-ggu__nav.is-open{
    position:fixed!important;
    display:none;
    z-index:99999!important;
    top:8vh!important;
    bottom:7vh!important;
    left:.7rem!important;
    right:.7rem!important;
    width:auto!important;
    max-height:none!important;
    height:auto!important;
    overflow-y:auto!important;
    -webkit-overflow-scrolling:touch;
    overscroll-behavior:contain;
    padding:.6rem!important;
    border:1px solid var(--line)!important;
    border-radius:18px!important;
    box-shadow:0 20px 60px rgba(0,0,0,.28)!important;
    background:#fff!important;
  }
  .b4a-ggu__nav.is-open{display:block!important}
  .b4a-ggu__nav button{font-size:.9rem!important;padding:.62rem .72rem!important;min-height:44px!important;margin:.08rem 0!important}
  .b4a-ggu:fullscreen .b4a-ggu__nav,.b4a-ggu:fullscreen .b4a-ggu__nav.is-open{top:58px!important;bottom:12px!important}
  .b4a-ggu__lesson{padding:.72rem!important;border-radius:14px!important}
  .b4a-ggu__lesson-grid{grid-template-columns:1fr!important;gap:.2rem!important}
  .b4a-ggu__lesson h3{font-size:.86rem!important}
  .b4a-ggu__lesson p,.b4a-ggu__lesson li{font-size:.78rem!important;line-height:1.35!important}
  .b4a-ggu__lesson li{margin:.24rem 0!important}
  .b4a-ggu__lesson-actions{display:grid!important;grid-template-columns:1fr 1fr!important;gap:.42rem!important}
  .b4a-ggu__lesson-actions button{min-height:42px!important;padding:.45rem .55rem!important;font-size:.78rem!important}
  .b4a-ggu.is-learning .b4a-ggu__scene{min-height:150px!important}
  .b4a-ggu.is-learning .b4a-ggu__answers{display:block!important}
  .b4a-ggu.is-learning .b4a-ggu__lesson-actions{margin-top:.48rem!important}
}
@media(max-width:760px){.b4a-ggu.is-menu-open{overflow:visible!important}}

/* v0.11.0 Fantasticamos printable resource library */
.b4a-ggu-resources{max-width:1100px;margin:1.25rem auto 2.25rem;padding:1.25rem;border:1px solid #eadfd4;border-radius:24px;background:linear-gradient(145deg,#fffaf4,#f7fbff);box-shadow:0 10px 28px rgba(33,49,78,.08);color:#17305a;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.b4a-ggu-resources *{box-sizing:border-box}
.b4a-ggu-resources__head{text-align:center;max-width:760px;margin:0 auto 1rem}
.b4a-ggu-resources__eyebrow{margin:0 0 .35rem;color:#b5526a;font-size:.78rem;font-weight:900;letter-spacing:.09em}
.b4a-ggu-resources__head h2{margin:.1rem 0 .55rem;color:#17305a;font-size:clamp(1.45rem,4vw,2.15rem);line-height:1.1}
.b4a-ggu-resources__head>p:last-child{margin:0;color:#53627a;line-height:1.55}
.b4a-ggu-resources__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.b4a-ggu-resource-card{display:flex;flex-direction:column;overflow:hidden;border:1px solid #e7dcd2;border-radius:18px;background:#fff;box-shadow:0 6px 18px rgba(33,49,78,.06)}
.b4a-ggu-resource-card__cover{display:flex;align-items:center;justify-content:center;min-height:215px;padding:.75rem;background:#eef6ff;border-bottom:1px solid #e7dcd2}
.b4a-ggu-resource-card__cover img{display:block;width:auto;max-width:100%;height:205px;object-fit:contain;border-radius:8px;box-shadow:0 5px 16px rgba(33,49,78,.12)}
.b4a-ggu-resource-card__body{display:flex;flex:1;flex-direction:column;padding:1rem}
.b4a-ggu-resource-card h3{margin:0 0 .45rem;color:#17305a;font-size:1.08rem;line-height:1.2}
.b4a-ggu-resource-card p{margin:0 0 .85rem;color:#53627a;font-size:.92rem;line-height:1.45}
.b4a-ggu-resource-card__actions{display:grid;grid-template-columns:1fr 1fr;gap:.55rem;margin-top:auto}
.b4a-ggu-resource-card__actions a{display:flex;align-items:center;justify-content:center;min-height:42px;padding:.55rem .5rem;border-radius:11px;text-align:center;text-decoration:none!important;font-size:.84rem;font-weight:850;line-height:1.15}
.b4a-ggu-resource-card__actions a:first-child{border:1px solid #d9e2ef;background:#fff;color:#17305a}
.b4a-ggu-resource-card__actions a:last-child{border:1px solid #17305a;background:#17305a;color:#fff}
.b4a-ggu-resources__note{margin:1rem 0 0;padding:.85rem 1rem;border:1px solid #efd58a;border-radius:14px;background:#fff4cf;color:#34445f;line-height:1.45}
@media(max-width:820px){.b4a-ggu-resources__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.b4a-ggu-resources{padding:.85rem;border-radius:18px}.b4a-ggu-resources__grid{grid-template-columns:1fr}.b4a-ggu-resource-card{display:grid;grid-template-columns:108px 1fr}.b4a-ggu-resource-card__cover{min-height:0;padding:.6rem;border-right:1px solid #e7dcd2;border-bottom:0}.b4a-ggu-resource-card__cover img{height:135px;max-width:96px}.b4a-ggu-resource-card__body{padding:.8rem}.b4a-ggu-resource-card__actions{grid-template-columns:1fr}.b4a-ggu-resource-card__actions a{min-height:38px}.b4a-ggu-resource-card h3{font-size:1rem}.b4a-ggu-resource-card p{font-size:.84rem}}

/* v0.12.0 mobile world-menu viewport hardening */
@media(max-width:760px){
  .b4a-ggu__nav,.b4a-ggu__nav.is-open{
    top:max(12px,env(safe-area-inset-top))!important;
    bottom:max(12px,env(safe-area-inset-bottom))!important;
    max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom))!important;
    overflow-y:auto!important;
    overscroll-behavior:contain!important;
    scrollbar-gutter:stable;
  }
  body.b4a-ggu-menu-open{overflow:hidden!important;touch-action:none}
  .b4a-ggu__nav{touch-action:pan-y}
}