:root{--color-bg-dark: #0b0d1e;--color-bg-card: #151a36;--color-bg-card-light: #1e244d;--color-bg-overlay: rgba(11, 13, 30, .88);--color-primary: #38bdf8;--color-primary-hover: #0284c7;--color-primary-shadow: #0369a1;--color-accent-gold: #fbbf24;--color-accent-gold-shadow: #d97706;--color-success: #22c55e;--color-success-shadow: #15803d;--color-danger: #ef4444;--color-danger-shadow: #b91c1c;--color-purple: #a855f7;--color-purple-shadow: #7e22ce;--color-text-light: #ffffff;--color-text-muted: #cbd5e1;--color-text-dim: #94a3b8;--font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Nunito", "Quicksand", "Arial Rounded MT Bold", sans-serif;--radius-sm: 12px;--radius-md: 20px;--radius-lg: 28px;--radius-full: 9999px;--min-touch-target: 48px;--transition-fast: .18s ease;--transition-normal: .3s cubic-bezier(.34, 1.56, .64, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{width:100%;height:100%;overflow-x:hidden;background-color:var(--color-bg-dark);color:var(--color-text-light);font-family:var(--font-family);user-select:none;-webkit-user-select:none}body{display:flex;flex-direction:column;min-height:100vh;position:relative}.space-background{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;background:radial-gradient(circle at 50% 20%,#1a1040,#0d122e,#070914);overflow:hidden}.stars-layer{position:absolute;top:0;right:0;bottom:0;left:0;background-repeat:repeat}.stars-1{background-image:radial-gradient(1.5px 1.5px at 20px 30px,#fff,#0000),radial-gradient(1px 1px at 70px 120px,#fef08a,#0000),radial-gradient(1.5px 1.5px at 150px 80px,#38bdf8,#0000),radial-gradient(2px 2px at 240px 190px,#fff,#0000),radial-gradient(1px 1px at 310px 60px,#fef08a,#0000);background-size:350px 350px;opacity:.8;animation:starTwinkle 4s infinite alternate ease-in-out}.stars-2{background-image:radial-gradient(2px 2px at 50px 90px,#fff,#0000),radial-gradient(1.5px 1.5px at 180px 220px,#f472b6,#0000),radial-gradient(2.5px 2.5px at 290px 140px,#fef08a,#0000);background-size:420px 420px;opacity:.6;animation:starTwinkle 6s infinite alternate-reverse ease-in-out}.nebula-glow{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;opacity:.22}.nebula-top{width:320px;height:320px;background:#38bdf8;top:-60px;right:-60px}.nebula-bottom{width:360px;height:360px;background:#c084fc;bottom:-80px;left:-80px}@keyframes starTwinkle{0%{opacity:.4}50%{opacity:.95}to{opacity:.5}}.app-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#0b0d1ebf;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}.header-left,.header-right{display:flex;align-items:center;gap:10px}.nav-icon-btn,.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:var(--min-touch-target);height:var(--min-touch-target);background:var(--color-bg-card-light);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-full);color:var(--color-text-light);font-size:1.25rem;cursor:pointer;transition:transform var(--transition-fast),background var(--transition-fast)}.nav-icon-btn:active,.icon-btn:active{transform:scale(.92)}.offline-indicator{display:inline-flex;align-items:center;gap:6px;background:#1e293bcc;padding:6px 12px;border-radius:var(--radius-full);font-size:.8rem;font-weight:700;color:var(--color-text-muted);border:1px solid rgba(255,255,255,.08)}.offline-indicator .dot-online{width:8px;height:8px;border-radius:50%;background:var(--color-success);box-shadow:0 0 8px var(--color-success)}.offline-indicator.is-offline{background:#ef444433;border-color:#ef444466}.offline-indicator.is-offline .dot-online{background:#f97316;box-shadow:0 0 8px #f97316}.stars-badge{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#78350f,#b45309);padding:6px 14px;border-radius:var(--radius-full);font-size:1.05rem;font-weight:800;color:#fef08a;border:2px solid var(--color-accent-gold);box-shadow:0 4px 12px #fbbf2440}.btn-install{display:inline-flex;align-items:center;gap:4px;background:var(--color-primary);color:#082f49;font-weight:800;font-size:.85rem;padding:6px 12px;border:none;border-radius:var(--radius-full);cursor:pointer}.app-main{position:relative;z-index:10;flex:1;display:flex;flex-direction:column;max-width:680px;width:100%;margin:0 auto;padding:16px}.game-screen{display:none;flex-direction:column;width:100%;animation:fadeIn .28s ease-out}.game-screen.active{display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:inherit;font-weight:800;border:none;border-radius:var(--radius-md);padding:14px 24px;min-height:var(--min-touch-target);font-size:1.1rem;cursor:pointer;text-align:center;transition:transform var(--transition-fast),filter var(--transition-fast);box-shadow:0 6px #00000059;position:relative}.btn:active{transform:translateY(4px);box-shadow:0 2px #00000059}.btn-giant{font-size:1.35rem;padding:18px 28px;border-radius:var(--radius-lg);letter-spacing:.5px}.btn-primary{background:linear-gradient(180deg,#38bdf8,#0284c7);color:#032b43;box-shadow:0 6px 0 var(--color-primary-shadow)}.btn-secondary{background:linear-gradient(180deg,#fbbf24,#d97706);color:#451a03;box-shadow:0 6px 0 var(--color-accent-gold-shadow)}.btn-outline{background:var(--color-bg-card-light);color:var(--color-text-light);border:2px solid rgba(255,255,255,.18);box-shadow:0 5px #0006}.btn-danger{background:linear-gradient(180deg,#ef4444,#dc2626);color:#fff;box-shadow:0 5px 0 var(--color-danger-shadow)}.btn-sm{padding:8px 16px;font-size:.95rem;min-height:42px}.btn-back{background:var(--color-bg-card-light);color:var(--color-text-light);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-full);padding:8px 18px;font-weight:700;font-size:.95rem;cursor:pointer}.hero-section{text-align:center;padding:20px 10px 16px}.mascot-wrapper{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:12px}.floating-mascot{animation:floatMascot 3.5s infinite ease-in-out}.floating-rocket{animation:floatRocket 4s infinite ease-in-out}@keyframes floatMascot{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-12px) rotate(3deg)}}@keyframes floatRocket{0%,to{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-16px) rotate(4deg)}}.game-title{display:flex;flex-direction:column;line-height:1.05;margin-bottom:8px}.title-top{font-size:2.2rem;font-weight:900;color:#38bdf8;text-shadow:0 4px 12px rgba(56,189,248,.4)}.title-bottom{font-size:2.8rem;font-weight:900;background:linear-gradient(180deg,#fef08a 20%,#f59e0b 90%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 4px 8px rgba(245,158,11,.4))}.game-slogan{font-size:1.2rem;font-weight:800;color:#e2e8f0;margin-bottom:8px}.game-target-badge{display:inline-block;background:#ffffff14;padding:6px 14px;border-radius:var(--radius-full);font-size:.85rem;color:var(--color-text-muted)}.home-actions{display:flex;flex-direction:column;gap:14px;margin:20px 0 24px}.planets-preview-card{background:var(--color-bg-card);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:16px;margin-top:8px}.card-subtitle{font-size:1.05rem;font-weight:800;color:var(--color-text-muted);text-align:center;margin-bottom:12px}.planet-preview-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.planet-mini-card{display:flex;flex-direction:column;align-items:center;background:var(--color-bg-card-light);padding:10px 6px;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.08);text-align:center;cursor:pointer;transition:transform var(--transition-fast)}.planet-mini-card:active{transform:scale(.96)}.planet-mini-icon{margin-bottom:6px}.planet-mini-title{font-size:.85rem;font-weight:800;margin-bottom:4px}.planet-mini-status{font-size:.75rem;font-weight:700;color:var(--color-text-dim)}.planet-mini-status.is-unlocked{color:var(--color-success)}.screen-header{display:flex;align-items:center;gap:14px;margin-bottom:12px}.screen-title{font-size:1.5rem;font-weight:900;color:#f8fafc}.planets-desc{font-size:.95rem;color:var(--color-text-muted);margin-bottom:18px}.planets-grid{display:flex;flex-direction:column;gap:16px}.planet-big-card{position:relative;display:flex;gap:16px;background:var(--color-bg-card);border:2px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:18px;cursor:pointer;overflow:hidden;transition:transform var(--transition-fast),border-color var(--transition-fast)}.planet-big-card:active{transform:scale(.98)}.planet-big-card.unlocked{border-color:#38bdf866}.planet-big-card.locked{opacity:.65;filter:grayscale(.5);cursor:not-allowed}.planet-visual{flex-shrink:0;display:flex;align-items:center;justify-content:center;width:90px}.planet-details{flex:1;display:flex;flex-direction:column;justify-content:center}.planet-title-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.planet-name{font-size:1.25rem;font-weight:900}.planet-level-badge{font-size:.75rem;font-weight:800;padding:3px 8px;border-radius:var(--radius-full);background:#ffffff1f}.planet-sub{font-size:.85rem;color:var(--color-text-muted);margin-bottom:8px}.planet-progress-bar-bg{width:100%;height:8px;background:#ffffff1f;border-radius:var(--radius-full);overflow:hidden;margin-bottom:6px}.planet-progress-fill{height:100%;background:linear-gradient(90deg,#38bdf8,#22c55e);border-radius:var(--radius-full);transition:width .4s ease}.planet-progress-label{font-size:.8rem;font-weight:700;color:var(--color-text-dim)}.game-top-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.btn-icon-round{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:var(--color-bg-card-light);border:1px solid rgba(255,255,255,.15);color:var(--color-text-light);font-size:1.1rem;cursor:pointer}.current-planet-tag{background:#38bdf826;border:1px solid rgba(56,189,248,.35);color:#7dd3fc;font-weight:800;font-size:.9rem;padding:6px 14px;border-radius:var(--radius-full)}.mission-progress-tag{background:#ffffff14;font-weight:700;font-size:.85rem;padding:6px 12px;border-radius:var(--radius-full);color:var(--color-text-muted)}.word-card{position:relative;background:var(--color-bg-card);border:2px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);padding:16px 18px 20px;display:flex;flex-direction:column;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 10px 30px #00000059}.btn-audio-speak{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg,#38bdf8,#0284c7);border:none;color:#04243a;font-weight:900;font-size:1.1rem;letter-spacing:.5px;padding:10px 24px;border-radius:var(--radius-full);cursor:pointer;box-shadow:0 5px #0369a1,0 0 16px #38bdf866;margin-bottom:6px;transition:transform var(--transition-fast)}.btn-audio-speak:active{transform:translateY(3px);box-shadow:0 2px #0369a1}.btn-audio-speak .speaker-icon{font-size:1.3rem}.illustration-box{display:flex;align-items:center;justify-content:center;min-height:160px;width:100%;margin:8px 0 10px}.vocab-illustration{filter:drop-shadow(0 12px 24px rgba(0,0,0,.5));animation:gentleBob 3.5s infinite ease-in-out;max-width:100%;height:auto}.custom-visual-badge{display:flex;align-items:center;justify-content:center;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,#38bdf840,#0f172a99);border:3px solid rgba(56,189,248,.4)}.visual-badge-emoji{font-size:5.5rem;line-height:1;filter:drop-shadow(0 8px 16px rgba(0,0,0,.4));animation:gentlePulse 2.8s infinite ease-in-out}@keyframes gentleBob{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes gentlePulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}.hint-bubble{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,#fbbf2438,#d9770647);border:2px solid var(--color-accent-gold);border-radius:var(--radius-full);padding:8px 22px;font-size:1.15rem;font-weight:800;color:#fef08a;box-shadow:0 4px 12px #fbbf2440;animation:fadeIn .3s ease;margin-top:4px}.hint-bubble .hint-icon{font-size:1.3rem}.hint-body{font-size:1.15rem;font-weight:900;color:#fffbeb;letter-spacing:.5px}.shake-animation{animation:gentleWobble .45s ease}@keyframes gentleWobble{0%,to{transform:translate(0)}20%,60%{transform:translate(-8px)}40%,80%{transform:translate(8px)}}.answer-section{display:flex;justify-content:center;margin-bottom:14px}.slots-container{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;max-width:100%}.answer-slot{display:flex;align-items:center;justify-content:center;width:58px;height:64px;background:#ffffff0d;border:3px dashed rgba(255,255,255,.25);border-radius:var(--radius-md);font-size:2.1rem;font-weight:900;color:#fff;cursor:pointer;transition:all var(--transition-fast);position:relative}.answer-slot.filled{background:linear-gradient(180deg,#38bdf8,#0284c7);border:3px solid #7dd3fc;box-shadow:0 5px 0 var(--color-primary-shadow);color:#04243a;animation:slotPopIn .22s cubic-bezier(.34,1.56,.64,1)}.answer-slot.active-target{border-color:var(--color-accent-gold);background:#fbbf241a}@keyframes slotPopIn{0%{transform:scale(.7);opacity:0}to{transform:scale(1);opacity:1}}.hint-bubble{background:linear-gradient(135deg,#fbbf242e,#d9770638);border:2px solid var(--color-accent-gold);border-radius:var(--radius-md);padding:12px 16px;margin-bottom:14px;animation:fadeIn .3s ease}.hint-header{display:flex;align-items:center;gap:8px;color:#fef08a;font-size:.95rem;font-weight:800;margin-bottom:4px}.hint-body{font-size:.95rem;font-weight:700;color:#fffbeb;line-height:1.4}.tiles-section{display:flex;flex-direction:column;align-items:center;margin-bottom:18px}.tiles-hint-label{font-size:.85rem;font-weight:700;color:var(--color-text-dim);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.tiles-pool{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;max-width:100%}.letter-tile{display:flex;align-items:center;justify-content:center;width:58px;height:64px;background:linear-gradient(180deg,#f8fafc,#e2e8f0);border:none;border-radius:var(--radius-md);font-size:2.1rem;font-weight:900;color:#0f172a;cursor:pointer;box-shadow:0 6px #94a3b8;transition:transform var(--transition-fast),opacity var(--transition-fast),box-shadow var(--transition-fast)}.letter-tile:active{transform:translateY(4px);box-shadow:0 2px #94a3b8}.letter-tile.used{opacity:.25;cursor:not-allowed;transform:translateY(4px);box-shadow:0 2px #475569}.game-action-bar{display:grid;grid-template-columns:1fr 1fr 1.6fr;gap:10px;margin-top:auto;padding-top:10px}.btn-action-hint{background:linear-gradient(180deg,#fbbf24,#d97706);color:#451a03;box-shadow:0 5px 0 var(--color-accent-gold-shadow);font-size:.95rem;padding:12px 10px}.btn-action-clear{background:var(--color-bg-card-light);color:#cbd5e1;border:1px solid rgba(255,255,255,.15);box-shadow:0 5px #0006;font-size:.95rem;padding:12px 10px}.btn-action-check{background:linear-gradient(180deg,#22c55e,#16a34a);color:#052e16;box-shadow:0 5px 0 var(--color-success-shadow);font-size:1.15rem}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:var(--color-bg-overlay);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:16px;animation:fadeIn .25s ease-out}.modal-backdrop.hidden{display:none!important}.modal-card{background:var(--color-bg-card);border:2px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);padding:24px 20px;max-width:480px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 16px 40px #0009;text-align:center}.modal-celebrate{display:flex;flex-direction:column;align-items:center}.celebrate-animation-zone{display:flex;align-items:center;justify-content:center;gap:20px;margin-bottom:12px}.bouncing-star{font-size:4.5rem;animation:bounceStar 1s infinite alternate cubic-bezier(.34,1.56,.64,1)}@keyframes bounceStar{0%{transform:translateY(0) scale(.9)}to{transform:translateY(-16px) scale(1.15)}}.launching-rocket{animation:rocketLaunchAnim 2s infinite ease-in-out}@keyframes rocketLaunchAnim{0%,to{transform:translateY(0) rotate(5deg)}50%{transform:translateY(-20px) rotate(-5deg)}}.celebrate-title{font-size:1.8rem;font-weight:900;color:#facc15;text-shadow:0 3px 10px rgba(250,204,21,.4);margin-bottom:12px}.word-celebration-badge{display:flex;flex-direction:column;align-items:center;gap:6px;background:#38bdf826;border:2px solid #38bdf8;padding:10px 24px;border-radius:var(--radius-md);margin-bottom:14px}.celebrated-word{font-size:2.2rem;font-weight:900;letter-spacing:4px;color:#fff}.syllables-pill{font-size:1.05rem;font-weight:800;color:#bae6fd}.badge-alert-box{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#a855f738;border:2px solid #c084fc;border-radius:var(--radius-full);padding:8px 20px;margin-bottom:16px;text-align:center}.badge-compact-text{font-size:1.05rem;font-weight:800;color:#f3e8ff}.badge-unlock-icon{font-size:2rem}.modal-dashboard{text-align:left}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:12px}.modal-heading{font-size:1.25rem;font-weight:800}.btn-close{background:transparent;border:none;color:var(--color-text-dim);font-size:1.4rem;cursor:pointer;padding:4px 8px}.parental-gate-box{background:var(--color-bg-card-light);border-radius:var(--radius-md);padding:16px;text-align:center}.gate-instruction{font-size:.95rem;color:var(--color-text-muted);margin-bottom:12px}.gate-math-row{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:10px}.gate-math-q{font-size:1.4rem;font-weight:900;color:var(--color-accent-gold)}.gate-input{width:80px;height:44px;font-size:1.25rem;font-weight:800;text-align:center;border-radius:var(--radius-sm);border:2px solid rgba(255,255,255,.25);background:#0f172a;color:#fff}.gate-error-text{color:#f87171;font-size:.85rem;font-weight:700}.stats-overview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}.stat-box{background:var(--color-bg-card-light);padding:12px;border-radius:var(--radius-md);text-align:center;border:1px solid rgba(255,255,255,.08)}.stat-number{display:block;font-size:1.8rem;font-weight:900;color:#38bdf8}.stat-label{font-size:.8rem;color:var(--color-text-muted);font-weight:700}.summary-section{margin-bottom:18px}.section-title{font-size:1.05rem;font-weight:800;margin-bottom:6px;color:#f1f5f9}.section-subtitle{font-size:.85rem;color:var(--color-text-dim);margin-bottom:8px}.badges-row{display:flex;flex-wrap:wrap;gap:8px}.badge-item{display:inline-flex;align-items:center;gap:6px;background:#ffffff14;padding:6px 12px;border-radius:var(--radius-full);font-size:.85rem;font-weight:700}.badge-item.unlocked{background:#fbbf242e;border:1px solid var(--color-accent-gold);color:#fef08a}.practice-list{display:flex;flex-direction:column;gap:6px;max-height:140px;overflow-y:auto}.practice-row{display:flex;align-items:center;justify-content:space-between;background:#ffffff0a;padding:8px 12px;border-radius:var(--radius-sm);font-size:.9rem}.privacy-notice{background:#38bdf81a;border:1px solid rgba(56,189,248,.3);border-radius:var(--radius-sm);padding:10px 12px;font-size:.8rem;line-height:1.4;color:#bae6fd;margin-bottom:18px}.danger-zone{border-top:1px solid rgba(239,68,68,.3);padding-top:14px}.danger-zone h4{color:#f87171;font-size:.95rem;margin-bottom:4px}.danger-zone p{font-size:.8rem;color:var(--color-text-dim);margin-bottom:10px}.victory-trophy{font-size:5rem;margin-bottom:10px;animation:bounceStar 1.2s infinite alternate ease-in-out}.victory-msg{font-size:1.1rem;color:var(--color-text-muted);margin-bottom:16px;line-height:1.5}.large-stars-badge{font-size:1.6rem;padding:10px 24px;margin-bottom:24px}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.floating-mascot,.floating-rocket,.bouncing-star,.launching-rocket,.stars-1,.stars-2{animation:none!important}}@media(min-width:600px){.app-main{padding:24px}.title-top{font-size:2.6rem}.title-bottom{font-size:3.4rem}.answer-slot,.letter-tile{width:66px;height:72px;font-size:2.4rem}.big-emoji{font-size:6rem}}@media(max-height:640px)and (orientation:landscape){.mascot-wrapper{display:none}.hero-section{padding:8px}.title-top{font-size:1.6rem}.title-bottom{font-size:2.1rem}.word-card{padding:10px;margin-bottom:8px}.illustration-box{min-height:60px}.big-emoji{font-size:3.2rem}.answer-slot,.letter-tile{width:48px;height:52px;font-size:1.6rem}}.header-mode-switcher{display:inline-flex;align-items:center;gap:4px;background:#0f172ad9;border:1px solid rgba(255,255,255,.14);padding:4px;border-radius:var(--radius-full)}.header-mode-btn{background:transparent;border:none;color:var(--color-text-muted);font-family:inherit;font-size:.78rem;font-weight:800;padding:6px 10px;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.header-mode-btn:hover{color:#fff}.header-mode-btn.active{background:linear-gradient(135deg,#38bdf8,#0284c7);color:#032b43;box-shadow:0 2px 8px #38bdf859}body.theme-math-d2 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var(--transition-fast),background var(--transition-fast)}.portal-mode-item:active{transform:scale(.96)}.portal-mode-item.active{background:linear-gradient(180deg,#38bdf840,#0284c759);border-color:#38bdf8;box-shadow:0 0 16px #38bdf84d}.portal-mode-item[data-mode=math_d2].active{background:linear-gradient(180deg,#fbbf2440,#ea580c59);border-color:#fbbf24;box-shadow:0 0 16px #fbbf244d}.portal-mode-item[data-mode=math_d3].active{background:linear-gradient(180deg,#4ade8040,#05966959);border-color:#4ade80;box-shadow:0 0 16px #4ade804d}.portal-icon{font-size:1.5rem;line-height:1.1}.portal-title{font-size:.85rem;font-weight:900;text-align:center}.portal-age{font-size:.68rem;color:var(--color-text-muted);font-weight:700}.portal-stars{font-size:.72rem;font-weight:800;background:#00000059;padding:2px 8px;border-radius:var(--radius-full);color:#fef08a;margin-top:2px}.math-question-card{width:100%;display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;padding:4px 6px}.math-category-pill{display:inline-flex;align-items:center;gap:6px;background:#38bdf829;border:1px solid rgba(56,189,248,.4);color:#bae6fd;font-size:.82rem;font-weight:800;padding:4px 14px;border-radius:var(--radius-full)}.math-question-prompt{font-size:1.05rem;font-weight:800;color:#f1f5f9;line-height:1.4;max-width:540px}.math-equation-banner{background:linear-gradient(180deg,#0f172a,#1e293b);border:2px solid rgba(56,189,248,.5);border-radius:var(--radius-md);padding:12px 24px;font-size:2rem;font-weight:900;letter-spacing:2px;color:#fef08a;box-shadow:inset 0 2px 10px #0009;width:100%;max-width:420px}.math-vertical-helper{display:flex;flex-direction:column;gap:4px;background:#0f172abf;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-md);padding:10px 14px;width:100%;max-width:340px}.pv-row{display:grid;align-items:center;gap:6px}.pv-col-title{font-size:.72rem;font-weight:800;text-transform:uppercase;color:#7dd3fc;background:#38bdf81f;padding:3px 4px;border-radius:6px}.pv-op-col{font-size:1.35rem;font-weight:900;color:#fbbf24;text-align:center}.pv-digit-cell{font-size:1.35rem;font-weight:900;color:#fff;background:#ffffff0d;border-radius:8px;padding:4px 0;min-height:36px;display:flex;align-items:center;justify-content:center}.pv-bottom-line{padding-bottom:6px;border-bottom:3px solid #38bdf8}.slot-pv-tag{position:absolute;top:-10px;left:50%;transform:translate(-50%);background:#1e293b;border:1px solid rgba(56,189,248,.5);color:#7dd3fc;font-size:.62rem;font-weight:800;padding:1px 6px;border-radius:var(--radius-full);white-space:nowrap;pointer-events:none}.answer-slot.choice-slot-wide{width:auto;min-width:220px;padding:0 24px;font-size:1.45rem}.tiles-pool.choices-grid-pool{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;width:100%;max-width:480px}.letter-tile.choice-card-tile{width:100%;height:auto;min-height:60px;padding:12px 16px;display:flex;align-items:center;justify-content:flex-start;gap:12px;font-size:1.35rem}.choice-badge-letter{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:#0284c7;color:#fff;font-size:.95rem;font-weight:900;flex-shrink:0}.choice-card-value{font-weight:900;color:#0f172a}.parent-mode-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:14px;background:#0f172ab3;padding:6px;border-radius:var(--radius-md)}.parent-tab-btn{background:transparent;border:1px solid transparent;color:var(--color-text-muted);font-family:inherit;font-size:.82rem;font-weight:800;padding:8px 6px;border-radius:var(--radius-sm);cursor:pointer}.parent-tab-btn.active{background:var(--color-bg-card-light);border-color:#38bdf8;color:#fff}@media(max-width:460px){.offline-indicator .status-text{display:none}.offline-indicator{padding:6px 8px}.math-equation-banner{font-size:1.55rem;padding:10px 14px}.tiles-pool.choices-grid-pool{grid-template-columns:1fr}}html,body{height:100vh;height:100dvh;max-height:100dvh;overflow:hidden}body{min-height:100vh;min-height:100dvh;height:100dvh;overflow:hidden}.app-header{flex-shrink:0;padding:6px 10px}.nav-icon-btn,.icon-btn{width:38px;height:38px;font-size:1.05rem}.stars-badge{padding:4px 10px;font-size:.9rem}.header-mode-switcher{padding:3px;gap:2px}.header-mode-btn{font-size:.72rem;padding:5px 8px}.app-main{flex:1;min-height:0;padding:8px 12px 10px;overflow:hidden}.game-screen.active{flex:1;min-height:0;height:100%;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.mode-portal-card{padding:8px 10px;margin-bottom:4px;flex-shrink:0}.mode-portal-label{font-size:.7rem;margin-bottom:6px}.mode-portal-grid{gap:6px}.portal-mode-item{padding:6px 4px;gap:2px;border-radius:14px}.portal-icon{font-size:1.2rem}.portal-title{font-size:.76rem}.portal-age{font-size:.62rem}.portal-stars{font-size:.66rem;padding:1px 6px}.hero-section{padding:4px 6px;flex-shrink:0}.mascot-wrapper{gap:10px;margin-bottom:4px}.mascot-wrapper svg{width:68px!important;height:68px!important}.game-title{margin-bottom:4px}.title-top{font-size:clamp(1.35rem,3.2vh,2rem)}.title-bottom{font-size:clamp(1.75rem,4.2vh,2.5rem)}.game-slogan{font-size:.9rem;margin-bottom:4px}.game-target-badge{font-size:.72rem;padding:3px 10px}.home-actions{gap:8px;margin:6px 0;flex-shrink:0}.home-actions .btn{padding:9px 16px;min-height:40px;font-size:.92rem;box-shadow:0 4px #00000059}.home-actions .btn-giant{padding:11px 20px;min-height:46px;font-size:1.08rem}.planets-preview-card{padding:8px 10px;margin-top:0;flex-shrink:0}.card-subtitle{font-size:.82rem;margin-bottom:6px}.planet-preview-row{gap:8px}.planet-mini-card{padding:6px 4px}.planet-mini-icon{margin-bottom:2px}.planet-mini-icon svg{width:34px!important;height:34px!important}.planet-mini-title{font-size:.74rem;margin-bottom:2px}.planet-mini-status{font-size:.68rem}#screen-planets .screen-header{margin-bottom:4px;flex-shrink:0}#screen-planets .screen-title{font-size:1.25rem}#screen-planets .planets-desc{font-size:.82rem;margin-bottom:8px;flex-shrink:0}#screen-planets .planets-grid{flex:1;min-height:0;display:flex;flex-direction:column;justify-content:space-evenly;gap:8px}#screen-planets .planet-big-card{flex:1;max-height:150px;padding:10px 14px;gap:12px;align-items:center}#screen-planets .planet-visual{width:64px}#screen-planets .planet-visual svg{width:60px!important;height:60px!important}#screen-planets .planet-name{font-size:1.05rem}#screen-planets .planet-sub{font-size:.78rem;margin-bottom:6px}.game-top-bar{margin-bottom:6px;flex-shrink:0}.btn-icon-round{width:36px;height:36px;font-size:.95rem}.current-planet-tag,.mission-progress-tag{font-size:.78rem;padding:4px 10px}.word-card{flex:1;min-height:0;padding:8px 12px;margin-bottom:6px;overflow:hidden}.btn-audio-speak{padding:5px 16px;font-size:.88rem;margin-bottom:4px;flex-shrink:0;box-shadow:0 3px #0369a1}.btn-audio-speak .speaker-icon{font-size:1rem}.illustration-box{flex:1;min-height:0;margin:2px 0;overflow:hidden}.vocab-illustration{max-height:115px;width:auto}.custom-visual-badge{width:96px;height:96px}.visual-badge-emoji{font-size:3.8rem}.math-question-card{gap:4px;padding:0}.math-category-pill{font-size:.72rem;padding:2px 10px}.math-question-prompt{font-size:.85rem;line-height:1.25}.math-equation-banner{font-size:1.35rem;padding:5px 12px;max-width:310px}.math-vertical-helper{padding:5px 10px;gap:2px;max-width:280px}.pv-col-title{font-size:.62rem;padding:1px 3px}.pv-op-col{font-size:1.05rem}.pv-digit-cell{font-size:1.05rem;min-height:24px;padding:1px 0}.pv-bottom-line{padding-bottom:3px}.hint-bubble{padding:4px 10px;margin:2px 0 0;flex-shrink:0}.hint-body{font-size:.76rem;line-height:1.2}.answer-section{margin-bottom:6px;flex-shrink:0}.slots-container{gap:8px}.answer-slot{width:48px;height:50px;font-size:1.65rem}.answer-slot.choice-slot-wide{min-width:180px;height:46px;font-size:1.2rem}.tiles-section{margin-bottom:6px;flex-shrink:0}.tiles-hint-label{font-size:.72rem;margin-bottom:4px}.tiles-pool{gap:8px}.letter-tile{width:46px;height:48px;font-size:1.55rem;box-shadow:0 4px #94a3b8}.tiles-pool.choices-grid-pool{grid-template-columns:repeat(2,1fr)!important;gap:8px}.letter-tile.choice-card-tile{min-height:46px;padding:6px 10px;gap:8px;font-size:1.02rem}.choice-badge-letter{width:24px;height:24px;font-size:.78rem}.game-action-bar{margin-top:0;padding-top:2px;gap:8px;flex-shrink:0}.game-action-bar .btn{padding:9px 8px;min-height:42px;font-size:.9rem}@media(max-height:700px){.mascot-wrapper svg{width:48px!important;height:48px!important}.hero-section{padding:2px 4px}.title-top{font-size:1.25rem}.title-bottom{font-size:1.55rem}.game-slogan{font-size:.8rem;margin-bottom:2px}.home-actions{gap:6px;margin:4px 0}.home-actions .btn{padding:7px 12px;min-height:36px;font-size:.85rem}.home-actions .btn-giant{padding:9px 16px;min-height:40px;font-size:.98rem}.planets-preview-card{padding:6px 8px}.planet-mini-icon svg{width:28px!important;height:28px!important}.vocab-illustration{max-height:90px}.math-equation-banner{font-size:1.2rem;padding:4px 10px}.pv-digit-cell{font-size:.95rem;min-height:20px}.answer-slot,.letter-tile{width:42px;height:44px;font-size:1.4rem}}.btn-install{width:38px;height:38px;padding:0;justify-content:center;border-radius:var(--radius-full);font-size:1.05rem}