:root{--bg-primary: #070b14;--bg-secondary: #0d1526;--bg-tertiary: #132038;--bg-card: rgba(18, 30, 52, .7);--color-cool: #00E5FF;--color-cool-rgb: 0, 229, 255;--color-hot: #FF2A85;--color-hot-rgb: 255, 42, 133;--color-gold: #FFD700;--text-main: #F0F6FC;--text-muted: #8B9BB4;--text-dim: #4E6182;--border-light: rgba(0, 229, 255, .2);--border-subtle: rgba(255, 255, 255, .08);--font-mono: "JetBrains Mono", monospace;--font-base: "M PLUS Rounded 1c", -apple-system, BlinkMacSystemFont, sans-serif;--glow-cool: 0 0 20px rgba(0, 229, 255, .45);--glow-hot: 0 0 25px rgba(255, 42, 133, .6), 0 0 10px rgba(255, 215, 0, .5)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-base);background-color:var(--bg-primary);color:var(--text-main);min-height:100vh;line-height:1.5;overflow-x:hidden;background-image:radial-gradient(ellipse at 50% 0%,rgba(0,229,255,.12) 0%,transparent 60%),radial-gradient(ellipse at 80% 50%,rgba(255,42,133,.08) 0%,transparent 50%),linear-gradient(to bottom,#070b14,#0a1120)}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;transition:all .2s ease}input,select{font-family:inherit}.ref-header{background:#0d1526d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-light);padding:12px 20px;position:sticky;top:0;z-index:100}.header-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.logo-area{display:flex;align-items:center;gap:10px}.logo-badge{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.1em;font-weight:800;padding:3px 8px;border-radius:4px;background:linear-gradient(135deg,var(--color-cool),var(--color-hot));color:#000}.logo-title{font-size:1.25rem;font-weight:900;letter-spacing:.05em;background:linear-gradient(to right,#FFF,var(--color-cool));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.btn-icon{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:6px;font-size:.85rem;font-weight:700}.btn-icon:hover{background:#00e5ff33;border-color:var(--color-cool)}.reference-bar-container{display:flex;flex-direction:column;gap:6px}.ref-label{font-size:.78rem;color:var(--text-muted);font-weight:700}.reference-digits{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}.ref-digit-card{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;padding:6px 10px;background:#13203899;border:1px solid var(--border-subtle);border-radius:8px;cursor:pointer;transition:all .2s cubic-bezier(.175,.885,.32,1.275)}.ref-digit-card:hover{transform:translateY(-2px);border-color:var(--color-cool);background:#00e5ff1a;box-shadow:0 4px 12px #00e5ff40}.ref-digit-card.is-hot:hover{border-color:var(--color-hot);background:#ff2a8526;box-shadow:0 4px 12px #ff2a8559}.ref-digit-num{font-family:var(--font-mono);font-weight:800;font-size:.95rem;margin-top:2px}.ref-digit-card.is-cool .ref-digit-num{color:var(--color-cool)}.ref-digit-card.is-hot .ref-digit-num{color:var(--color-hot)}.ref-digit-name{font-size:.65rem;color:var(--text-muted)}.mode-nav{display:flex;background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);padding:0 16px;overflow-x:auto}.nav-tab{padding:12px 18px;display:flex;align-items:center;gap:8px;color:var(--text-muted);font-weight:700;font-size:.92rem;border-bottom:3px solid transparent;white-space:nowrap}.nav-tab:hover{color:var(--text-main);background:#ffffff08}.nav-tab.active{color:var(--color-cool);border-bottom-color:var(--color-cool);background:#00e5ff0f}.nav-tab .tab-num{font-family:var(--font-mono);font-size:1rem}.main-content{max-width:1100px;margin:0 auto;padding:20px 16px}.mode-section{display:none}.mode-section.active{display:block;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.theater-workspace,.lab-container,.drill-container,.flash-container{display:flex;flex-direction:column;gap:16px}.theater-presets,.lab-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 16px;background:var(--bg-secondary);border-radius:8px;border:1px solid var(--border-subtle)}.preset-label,.helper-title{font-size:.82rem;color:var(--text-muted);font-weight:700}.btn-preset{padding:5px 12px;border-radius:6px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);font-size:.85rem;font-weight:600;color:var(--text-main)}.btn-preset:hover,.btn-preset.active{background:#00e5ff33;border-color:var(--color-cool);color:var(--color-cool)}.custom-expr-box{display:flex;align-items:center;gap:6px;margin-left:auto}.input-num{width:55px;background:var(--bg-primary);border:1px solid var(--border-light);border-radius:4px;padding:4px 6px;color:#fff;font-family:var(--font-mono);font-size:.9rem;text-align:center}.select-op{background:var(--bg-primary);border:1px solid var(--border-light);border-radius:4px;padding:4px 6px;color:#fff;font-family:var(--font-mono)}.btn-secondary{padding:5px 12px;border-radius:4px;background:var(--bg-tertiary);border:1px solid var(--border-light);font-size:.85rem;font-weight:700}.btn-secondary:hover{background:#00e5ff40}.interactive-stage,.lab-stage,.drill-board,.flash-display-stage{position:relative;min-height:280px;background:radial-gradient(circle at center,#0e172a,#080d18);border:1px solid var(--border-light);border-radius:12px;padding:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:inset 0 0 30px #0009;overflow:hidden}.stage-background-grid{position:absolute;top:0;left:0;right:0;bottom:0;background-size:30px 30px;background-image:linear-gradient(to right,rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.02) 1px,transparent 1px);pointer-events:none}.slots-container{display:flex;gap:20px;justify-content:center;align-items:flex-end;position:relative;z-index:2;width:100%}.slot-column{display:flex;flex-direction:column;align-items:center;gap:8px}.slot-title{font-size:.75rem;color:var(--text-dim);font-weight:700;text-transform:uppercase;letter-spacing:.05em}.slot-frame{width:140px;min-height:180px;background:#0d1526b3;border:1px dashed rgba(0,229,255,.25);border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:10px;position:relative;transition:all .3s ease}.slot-frame.highlight-spark{border-color:var(--color-gold);box-shadow:0 0 35px #ffd700b3,inset 0 0 15px #ff2a8566;background:#ffd7001f;animation:spark-pulse .6s infinite alternate ease-in-out}.slot-frame.highlight-fusion{border-color:var(--color-cool);box-shadow:0 0 35px #00e5ffcc,inset 0 0 15px #00e5ff4d;background:#00e5ff1f;animation:fusion-pulse .8s infinite alternate ease-in-out}@keyframes spark-pulse{0%{transform:scale(.98)}to{transform:scale(1.03)}}@keyframes fusion-pulse{0%{transform:scale(.99)}to{transform:scale(1.02)}}.drill-btn-choice.selected{border-color:var(--color-cool)!important;background:#00e5ff40!important;box-shadow:0 0 12px #00e5ff80}.slot-number-label{font-family:var(--font-mono);font-size:1.1rem;font-weight:800;color:var(--text-muted)}.subtitle-panel{background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:8px;padding:16px 20px}.subtitle-header{display:flex;align-items:center;gap:12px;margin-bottom:8px}.step-badge{font-family:var(--font-mono);font-size:.75rem;font-weight:800;background:var(--color-cool);color:#000;padding:2px 8px;border-radius:4px}.step-title{font-size:1.05rem;font-weight:800;color:var(--text-main)}.subtitle-text{font-size:.95rem;color:var(--text-main);line-height:1.6}.playback-bar{display:flex;justify-content:space-between;align-items:center;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;padding:12px 18px;flex-wrap:wrap;gap:12px}.playback-buttons{display:flex;gap:8px}.btn-ctrl{padding:8px 16px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:6px;font-weight:700;font-size:.88rem}.btn-ctrl:hover{background:#ffffff1a}.btn-play{background:linear-gradient(135deg,#00e5ff33,#00e5ff66);border-color:var(--color-cool);color:var(--color-cool);font-size:.95rem;padding:8px 20px}.btn-play:hover{background:var(--color-cool);color:#000;box-shadow:0 0 15px #00e5ff99}.playback-options{display:flex;align-items:center;gap:20px}.option-item{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--text-muted)}.speed-toggle{display:flex;border:1px solid var(--border-subtle);border-radius:4px;overflow:hidden}.btn-speed{padding:3px 8px;font-family:var(--font-mono);font-size:.75rem;background:var(--bg-tertiary)}.btn-speed.active{background:var(--color-cool);color:#000;font-weight:800}.range-slider{cursor:pointer;accent-color:var(--color-cool)}.sub-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.sub-tab{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;padding:12px 14px;text-align:left;display:flex;flex-direction:column;gap:4px}.sub-tab strong{font-size:.9rem;color:var(--text-muted)}.sub-tab small{font-size:.75rem;color:var(--text-dim)}.sub-tab.active{border-color:var(--color-cool);background:#00e5ff14}.sub-tab.active strong{color:var(--color-cool)}.sub-content{display:none;flex-direction:column;gap:16px}.sub-content.active{display:flex}.voice-bubble-container{display:flex;justify-content:center;margin-top:8px}.voice-bubble{background:linear-gradient(135deg,#1f2937,#111827);border:2px solid var(--color-gold);border-radius:20px;padding:8px 24px;font-size:1.2rem;font-weight:900;color:var(--color-gold);box-shadow:0 0 15px #ffd70059;animation:pulse-slow 2s infinite ease-in-out}.mini-kuku-helper{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;padding:12px 16px}.mini-kuku-grid{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.kuku-pill{font-family:var(--font-mono);font-size:.85rem;font-weight:700;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:4px;padding:4px 10px;color:var(--color-cool)}.drill-menu{display:flex;gap:8px}.btn-drill-select{flex:1;padding:10px 14px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:6px;font-size:.85rem;font-weight:700;color:var(--text-muted)}.btn-drill-select.active{background:#00e5ff26;border-color:var(--color-cool);color:var(--color-cool)}.drill-header-bar{width:100%;display:flex;justify-content:space-between;margin-bottom:20px;font-family:var(--font-mono);font-size:1rem;font-weight:800}.drill-score{color:var(--color-gold)}.drill-timer{color:var(--color-cool)}.drill-prompt-box{font-size:1.4rem;font-weight:800;margin-bottom:24px;text-align:center}.drill-interact-area{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}.drill-btn-choice{min-width:90px;padding:12px 18px;background:var(--bg-tertiary);border:2px solid var(--border-light);border-radius:8px;display:flex;flex-direction:column;align-items:center;gap:6px;font-weight:800}.drill-btn-choice:hover{border-color:var(--color-cool);background:#00e5ff33;transform:scale(1.05)}.drill-feedback{margin-top:16px;font-size:1.1rem;font-weight:900;min-height:28px}.drill-feedback.correct{color:#10b981}.drill-feedback.wrong{color:#ef4444}.flash-settings-bar{display:flex;justify-content:space-between;align-items:center;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;padding:12px 16px;flex-wrap:wrap;gap:12px}.flash-type-select{display:flex;align-items:center;gap:8px}.btn-flash-type{padding:6px 14px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:4px;font-size:.85rem;font-weight:700}.btn-flash-type.active{background:var(--color-cool);color:#000;font-weight:800}.flash-question-text{font-family:var(--font-mono);font-size:3.5rem;font-weight:900;letter-spacing:.05em;color:#fff;text-shadow:0 0 20px rgba(0,229,255,.5);margin-bottom:12px}.flash-fading-slots{display:flex;gap:20px}.flash-keypad-panel{display:flex;flex-direction:column;align-items:center;gap:12px}.flash-input-display{width:220px;height:52px;background:var(--bg-secondary);border:2px solid var(--border-light);border-radius:8px;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:2rem;font-weight:900;color:var(--color-cool)}.input-cursor{animation:blink 1s infinite}@keyframes blink{50%{opacity:0}}.keypad-grid{display:grid;grid-template-columns:repeat(3,70px);gap:8px}.btn-key{height:54px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;font-family:var(--font-mono);font-size:1.4rem;font-weight:800}.btn-key:hover{background:#00e5ff33;border-color:var(--color-cool)}.btn-key:active{transform:scale(.95)}.btn-clear{color:#ef4444}.btn-submit{background:linear-gradient(135deg,var(--color-cool),#0099FF);color:#000;font-size:1.1rem}.btn-submit:hover{box-shadow:0 0 15px #00e5ff99}.flash-feedback-bar{display:flex;align-items:center;justify-content:center;gap:16px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:8px;padding:14px}.flash-result-msg{font-size:1.2rem;font-weight:800}.btn-primary{padding:8px 18px;background:var(--color-cool);color:#000;border-radius:6px;font-weight:800;font-size:.95rem}.btn-primary:hover{box-shadow:0 0 15px #00e5ff80}.pulse-fast{animation:pulse-glow 1.2s infinite alternate ease-in-out}.pulse-slow{animation:rotate-dash 10s infinite linear}@keyframes pulse-glow{0%{transform:scale(.97);opacity:.85}to{transform:scale(1.05);opacity:1}}@keyframes rotate-dash{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(max-width:768px){.sub-tabs{grid-template-columns:1fr}.slots-container{gap:10px}.slot-frame{width:95px;min-height:140px}.flash-question-text{font-size:2.5rem}.custom-expr-box{margin-left:0;width:100%;margin-top:6px}}