:root{--crt-green: #33ff33;--crt-green-dim: #22aa22;--crt-green-bright: #66ff66;--crt-amber: #ffaa00;--crt-bg: #0a0a0f;--crt-glow: rgba(51, 255, 51, .08);--crt-scanline-alpha: .12;--crt-flicker-speed: .05s}#crt-overlay{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:10000;background:repeating-linear-gradient(0deg,rgba(0,0,0,var(--crt-scanline-alpha)) 0px,rgba(0,0,0,var(--crt-scanline-alpha)) 1px,transparent 1px,transparent 3px);mix-blend-mode:multiply}#crt-overlay:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse at center,transparent 60%,rgba(0,0,0,.4) 100%);pointer-events:none}body{background:var(--crt-bg);overflow-x:hidden;box-shadow:inset 0 0 120px #000c}#app{position:relative;text-shadow:.5px 0 0 rgba(255,0,0,.12),-.5px 0 0 rgba(0,100,255,.12),0 0 8px var(--crt-glow);animation:crt-flicker .1s infinite alternate}@keyframes crt-flicker{0%{opacity:.985}50%{opacity:1}to{opacity:.99}}@keyframes crt-warp{0%,to{transform:scaleX(1)}50%{transform:scaleX(1.0003)}}.crt-text{text-shadow:0 0 5px var(--crt-green),0 0 10px rgba(51,255,51,.3),.5px 0 0 rgba(255,0,0,.1),-.5px 0 0 rgba(0,100,255,.1)}@keyframes crt-turn-on{0%{transform:scaleY(.005) scaleX(.3);filter:brightness(30)}20%{transform:scaleY(.005) scaleX(1);filter:brightness(10)}40%{transform:scaleY(1) scaleX(1);filter:brightness(2)}to{transform:scaleY(1) scaleX(1);filter:brightness(1)}}#app{animation:crt-turn-on .6s ease-out,crt-flicker .1s .6s infinite alternate}@keyframes scanline-scroll{0%{top:-5%}to{top:105%}}#crt-overlay:after{content:"";position:fixed;left:0;width:100%;height:4px;background:#ffffff08;z-index:10001;animation:scanline-scroll 8s linear infinite;pointer-events:none}*{margin:0;padding:0;box-sizing:border-box}html{font-size:clamp(14px,1.1vw,20px)}body{font-family:"Press Start 2P",monospace;color:var(--crt-green);min-height:100vh}#app{max-width:1100px;margin:0 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.menu-desc{font-size:9px;color:var(--crt-green-dim);display:block;margin-top:4px;margin-left:28px}.cursor-blink{display:inline-block;width:8px;height:12px;background:var(--crt-green);animation:blink 1s step-end infinite;vertical-align:middle;margin-left:4px}@keyframes blink{50%{opacity:0}}.status-bar{margin-top:auto;padding:12px 0;border-top:2px solid var(--crt-green-dim);font-size:10px;display:flex;justify-content:space-between;color:var(--crt-green-dim)}.game-container{flex:1;display:flex;flex-direction:column;position:relative}.game-header,.top-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--crt-green-dim);margin-bottom:15px;font-size:9px}.top-bar-left,.top-bar-actions,.game-stats{display:flex;align-items:center;gap:14px;flex-wrap:wrap}button,.back-btn,.auth-submit,.diff-btn,.top-bar button{cursor:pointer;color:var(--crt-amber);background:none;border:1px solid var(--crt-amber);padding:8px 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.correct{color:var(--crt-green-bright);text-shadow:0 0 8px var(--crt-green)}.word-display .wrong{color:#f33;text-shadow:0 0 8px rgba(255,0,0,.5)}.word-display .pending{color:var(--crt-green-dim)}input,select,textarea{font-family:inherit;color:var(--crt-green-bright);background:#000000a6;border:1px solid var(--crt-green-dim);padding:12px;border-radius:3px;outline:none}.form-field input:not([type=radio]):not([type=checkbox]),.form-field select,.form-field textarea{width:100%}input[type=radio],input[type=checkbox]{width:auto;padding:0;accent-color:var(--crt-green)}input:focus,select:focus,textarea:focus{border-color:var(--crt-green);box-shadow:0 0 0 2px #33ff331f,0 0 14px #33ff332e}.auth-box,.panel,.analytics-panel,.settings-panel,.family-card,.lesson-card,.drill-card,.game-card,.mini-leaderboard{border:1px solid var(--crt-green-dim);background:#00000059;padding:16px;margin:10px 0}.trial-banner{border:1px solid var(--crt-amber);color:var(--crt-amber);padding:10px;text-align:center;font-size:9px;margin-bottom:12px}.trial-banner a{color:var(--crt-amber)}table{width:100%;border-collapse:collapse}th,td{border-bottom:1px solid var(--crt-green-dim);padding:10px;text-align:left;font-size:9px}.leaderboard-sidebar{position:fixed;top:120px;width:190px;max-height:calc(100vh - 150px);overflow:auto}.leaderboard-sidebar.left{left:16px}.leaderboard-sidebar.right{right:16px}.mini-leaderboard h3{color:var(--crt-amber);font-size:8px;margin-bottom:8px}.mini-lb-row,.mini-lb-empty{display:flex;justify-content:space-between;gap:8px;color:var(--crt-green-dim);font-size:7px;line-height:1.6}@media (max-width: 1500px){.leaderboard-sidebar{display:none}}.auth-screen{width:100%;min-height:calc(100vh - 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#00000080}.auth-kicker{color:var(--crt-amber);font-size:9px;letter-spacing:1px;margin-bottom:12px;text-align:center}.auth-title{color:var(--crt-green-bright);font-size:18px;line-height:1.6;text-align:center;margin-bottom:12px;text-shadow:0 0 10px rgba(51,255,51,.45)}.auth-copy{max-width:390px;margin:0 auto 24px;color:var(--crt-green-dim);font-family:Segoe UI,system-ui,sans-serif;font-size:15px;line-height:1.55;text-align:center}.auth-form{display:grid;gap:16px}.form-field{display:grid;gap:8px}.form-field label{color:var(--crt-amber);font-size:9px;letter-spacing:1px}.auth-submit{width:100%;justify-content:center;margin-top:2px;padding:14px 16px;border:2px solid var(--crt-green);color:#071007;background:var(--crt-green);font-size:10px;box-shadow:0 0 18px #33ff332e}.auth-submit:hover:not(:disabled){color:#071007;background:var(--crt-green-bright)}.auth-submit:disabled{opacity:.6;cursor:wait}.auth-error{min-height:18px;color:#ff5d5d;font-size:9px;line-height:1.6;text-align:center}.auth-toggle,.auth-skip{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px;color:var(--crt-green-dim);font-size:9px;line-height:1.7;text-align:center}.auth-toggle button,.auth-skip button{font-size:8px;padding:8px 10px}@media (max-width: 700px){#app{padding:12px}.dos-header h1,.auth-brand-button{font-size:18px}.dos-menu li{font-size:11px}.top-bar,.game-header,.status-bar{align-items:flex-start;flex-direction:column}.auth-screen{justify-content:flex-start;padding-top:18px}.auth-box{padding:20px}}.top-bar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.child-name{color:var(--crt-green-bright);text-shadow:0 0 6px 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