:root{--bg-main: #ffede6;--primary: #f6ad55;--distill: #2dd4bf;--text-main: #2d3748;--text-muted: #718096;--border: #fbd38d}*{margin:0;padding:0;box-sizing:border-box}body{background:linear-gradient(135deg,#fff5f0,#ffc1a1);color:var(--text-main);font-family:Pretendard,sans-serif;min-height:100vh}#app{max-width:1000px;margin:0 auto;padding:2rem}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:3rem}.home-btn{text-decoration:none;font-size:3rem;color:var(--text-muted);transition:all .2s;margin-right:1.5rem;display:inline-block}.home-btn:hover{transform:scale(1.1);color:#f6ad55}.logo{font-weight:800;font-size:1.5rem;letter-spacing:-.5px;display:flex;align-items:center}.card{background:#fff;padding:2.5rem;border-radius:32px;border:none;box-shadow:0 20px 40px #0000000d;color:#1e293b}.logo span{color:#ff9e6d}h3{margin-bottom:1rem;font-weight:700;font-size:1.1rem;display:flex;align-items:center;gap:12px}.header-icon{width:32px;height:32px;object-fit:contain}textarea{width:100%;height:120px;background:#fff;border:2px solid #fed7aa;border-radius:16px;padding:1.5rem;color:#1e293b;font-size:1.2rem;margin-bottom:1.5rem;resize:none;outline:none}.primary-btn{background:var(--primary);color:#fff;border:none;padding:.8rem 2rem;border-radius:12px;font-weight:600;cursor:pointer;transition:.3s}.primary-btn:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #6366f166}#workspace{animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.original-sentence-card{background:#fff;padding:2rem 3rem;border-radius:24px;margin-bottom:3rem;position:relative;border:none;box-shadow:0 10px 30px #0000000d}.badge{position:absolute;top:-15px;left:30px;background:#ff9e6d;color:#fff;padding:6px 16px;font-size:.85rem;font-weight:800;border-radius:10px;box-shadow:0 4px 10px #ff9e6d4d}.interactive-area{display:flex;gap:2rem;margin-bottom:3rem}.source-pool{flex:1}.target-slots{flex:1;display:flex;flex-direction:column;gap:1rem}.target-slots h3{font-size:1.1rem;font-weight:700;color:#1e293b;margin-bottom:.1rem}.chunks-container{display:flex;flex-wrap:wrap;gap:12px;background:#fff;padding:24px;border-radius:24px;min-height:150px;box-shadow:0 10px 25px #0000000a}.chunk{background:#fff;border:2px solid #fed7aa;padding:10px 18px;border-radius:12px;cursor:grab;font-weight:700;color:#1e293b;-webkit-user-select:none;user-select:none;transition:all .2s}.chunk:hover{border-color:var(--primary)}.chunk.dragging{opacity:.5;cursor:grabbing}.chunk.used{border-style:dashed;opacity:.8}.slot-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.drop-slot{height:60px;background:#fff;border:2px dashed #fed7aa;border-radius:16px;display:flex;align-items:center;justify-content:center;transition:.3s;position:relative;overflow:hidden}.drop-slot span{font-size:.8rem;color:var(--text-muted);font-weight:700}.drop-slot.active{border-color:var(--primary);background:#6366f10d}.drop-slot.wrong{border-color:#ef4444}.placed-box{background:var(--primary);color:#fff;padding:8px 16px;border-radius:8px;font-weight:700;cursor:grab;width:90%;text-align:center;box-shadow:0 4px 6px -1px #0000001a}.placed-box:active{cursor:grabbing}.distill-container{text-align:center;padding-top:2rem;border-top:1px solid var(--border)}.guide-msg{color:var(--distill);font-weight:600;margin-bottom:1rem}.distill-arrow{font-size:2rem;color:var(--border);margin-bottom:1.5rem}.final-slots{display:flex;justify-content:center;gap:15px;margin-bottom:2rem}.distill-slot{width:140px;height:50px;border:2px solid #fed7aa;border-radius:12px;display:flex;align-items:center;justify-content:center;background:#fff;font-weight:800;font-size:1.1rem;transition:.3s cubic-bezier(.175,.885,.32,1.2)}.distill-slot.active{border-color:var(--distill);background:#2dd4bf1a;transform:translateY(-5px) scale(1.02);box-shadow:0 10px 20px -10px #2dd4bf80}.distill-slot.success{border-color:#10b981;background:#10b9811a}.distill-slot.wrong{border-color:#ef4444;background:#ef44441a}.distilled-word{animation:bounceIn .5s cubic-bezier(.175,.885,.32,1.275)}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.1)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}.blink{animation:blinkEffect .6s infinite}@keyframes blinkEffect{0%,to{opacity:1}50%{opacity:.4}}.prediction-card{background:#fff;border:3px solid #fbd38d;text-align:center;padding:3rem!important}.prediction-card h3{font-size:1.8rem;margin-bottom:2rem;color:#1e293b}.options-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;max-width:600px;margin:0 auto}.option-btn{padding:1rem;background:#ffffff0d;border:1px solid var(--border);border-radius:12px;color:var(--text-muted);font-weight:600;cursor:pointer;transition:all .2s}.option-btn:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}.tree-container{margin-top:3rem;padding:2.5rem;background:#fff;border-radius:32px;border:none;box-shadow:0 15px 40px #0000000d}.tree-node{display:flex;flex-direction:column;align-items:center;margin:1rem}.node-box{padding:.8rem 1.5rem;background:#fff;border:2px solid var(--primary);border-radius:12px;color:var(--text-main);font-weight:700;position:relative;box-shadow:0 4px 12px #0000000d}.node-type{font-size:.9rem;color:var(--primary);margin-bottom:.3rem;font-weight:800;text-transform:uppercase}.blueprint-wrapper,.blueprint-wrapper *{box-sizing:border-box!important}.blueprint-wrapper{display:flex;flex-direction:row;align-items:flex-end;padding:100px 50px;gap:0;overflow-x:auto;min-height:550px}.bp-node{padding:0 40px 15px;font-weight:800;white-space:nowrap}.bp-node.main{align-self:flex-start;margin-bottom:212px;margin-left:-12px;font-size:2.3rem;color:#1e293b;border-bottom:12px solid #94a3b8}.bp-node.sub{align-self:flex-end;margin-right:-12px;font-size:1.6rem;color:#475569;border-bottom:12px solid #94a3b8;margin-bottom:0}.bp-up-line{width:60px;height:200px;border-left:12px solid #94a3b8;border-top:12px solid #94a3b8;align-self:flex-end;margin-bottom:12px;position:relative;z-index:10}.bp-connector{width:52px;height:12px;background:#94a3b8;margin-bottom:0;margin-left:-12px;margin-right:-12px}.chunk{border:1px solid var(--border);padding:10px 18px;border-radius:12px;background:#fff;box-shadow:0 4px 6px -1px #0000000d;cursor:grab;transition:all .2s;font-weight:500}.chunk:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:0 8px 15px -3px #0000001a}.node-text{font-size:1.2rem;font-weight:700}.node-children{display:flex;flex-direction:row;gap:2rem;margin-top:2rem;position:relative}.node-children:before{content:"";position:absolute;top:-1rem;left:50%;transform:translate(-50%);width:2px;height:1rem;background:var(--primary)}.choice-item{transition:all .2s ease;padding:10px 20px;border-radius:12px}.choice-item:hover{transform:translateY(-5px);background:#a855f71a}#mission-complete-btn{transition:all .2s ease}#mission-complete-btn:hover{transform:scale(1.05);background:#9333ea}.difficulty-badge{background:linear-gradient(135deg,#1e293b,#334155);color:#fff;padding:6px 14px;border-radius:20px;font-size:.9rem;font-weight:700;box-shadow:0 4px 10px #00000026;display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.1);animation:fadeInScale .4s ease-out forwards}.difficulty-badge span{color:#fca5a5;font-weight:900}@keyframes fadeInScale{0%{opacity:0;transform:scale(.8) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}.shake{animation:shake .4s ease-in-out}