:root{--bg-main: #fff5eb;--bg-card: #ffffff;--primary: #fb923c;--primary-hover: #f97316;--accent: #10b981;--text-main: #1e293b;--text-muted: #64748b;--border: #fed7aa;--shadow-color: rgba(251, 146, 60, .2)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Pretendard,-apple-system,sans-serif;background:linear-gradient(135deg,#fffaf0,#fff5eb);color:var(--text-main);line-height:1.6;min-height:100vh}.app-container{max-width:900px;margin:0 auto;padding:40px 20px}.main-header{text-align:center;margin-bottom:60px;display:flex;flex-direction:column;align-items:center;position:relative}.home-btn{position:absolute;left:0;top:50%;transform:translateY(-50%);text-decoration:none;font-size:3rem;color:var(--text-muted);transition:all .2s}.home-btn:hover{transform:translateY(-50%) scale(1.2);color:var(--primary)}.logo{font-size:2.5rem;font-weight:800;letter-spacing:-1px}.logo span{color:#fb923c}.tagline{color:var(--text-muted);font-size:1.1rem}.card{background:var(--bg-card);border:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:24px;padding:32px;margin-bottom:24px}.shadow-lg{box-shadow:0 10px 15px -3px var(--shadow-color)}.shadow-xl{box-shadow:0 20px 25px -5px var(--shadow-color)}.shadow-2xl{box-shadow:0 25px 50px -12px var(--shadow-color)}.card-header{margin-bottom:24px}.card-header h2{font-size:1.5rem;font-weight:700;margin-bottom:4px;display:flex;align-items:center;gap:12px}.header-icon{width:32px;height:32px;object-fit:contain}.card-header p{color:var(--text-muted)}textarea{width:100%;min-height:120px;background:#fff;border:2px solid var(--border);border-radius:16px;padding:24px;color:#1e293b;font-size:1.1rem;font-family:inherit;resize:none;outline:none;transition:all .2s}textarea:focus{border-color:var(--primary);background:#00000014}.input-group{display:flex;flex-direction:column;gap:16px}.btn{padding:14px 28px;border-radius:14px;font-weight:600;font-size:1rem;cursor:pointer;border:none;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}.btn-secondary{background:#fff;color:#1e293b;border:1px solid var(--border)}.btn-secondary:hover{background:#f8fafc}.quiz-item{display:flex;align-items:center;gap:20px;padding:20px;background:#f8fafc;border-radius:16px;margin-bottom:16px;border:2px solid #e2e8f0}.quiz-avatar{width:60px;height:60px;flex-shrink:0}.quiz-content{flex:1}.quiz-question{font-size:1.2rem;font-weight:700;margin-bottom:12px;color:#1e293b}.quiz-options{display:flex;gap:12px;flex-wrap:wrap}.quiz-option{padding:10px 20px;background:#fff;border:2px solid #e2e8f0;border-radius:12px;cursor:pointer;font-weight:600;transition:all .2s}.quiz-option:hover{border-color:var(--primary);background:#fffaf0}.quiz-option.correct{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px #fb923c66}.quiz-option.wrong{opacity:.6;background:#f1f5f9}.btn-accent{background:var(--accent);color:#fff}.btn-accent:hover{opacity:.9;transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-outline:hover{color:var(--text-main);border-color:var(--text-muted)}.sentence-canvas{font-size:1.4rem;padding:100px 60px;display:flex;flex-wrap:nowrap;gap:0;align-items:flex-start;overflow-x:auto;min-height:400px;scroll-behavior:smooth;position:relative;background:#fff;border:8px solid #fdf2f2;border-radius:32px}.segment-block{display:flex;flex-direction:column;align-items:flex-start;opacity:.1;transition:all .6s cubic-bezier(.16,1,.3,1);position:relative;flex-shrink:0;margin-right:-1px;margin-left:-1px}.segment-block.is-embedded{margin-top:80px}.segment-block.is-main{margin-top:0!important}.segment-block.revealed{opacity:1}.segment-block.is-main.revealed{transform:scale(1.02)}.segment-block.is-embedded.revealed{transform:scale(1)}.segment-text{height:40px;display:flex;align-items:center;white-space:nowrap;z-index:2;padding:0 10px;font-weight:700;color:#1e293b;margin-bottom:0}.final-predicate{font-weight:900;font-size:1.2em;color:var(--text-main);letter-spacing:-.5px}.segment-visual-bar{width:100%;height:12px;background:#94a3b8;transition:all .4s ease}.corner-down{width:40px;height:92px;border-top:12px solid #94a3b8;border-right:12px solid #94a3b8;margin-top:40px;flex-shrink:0;opacity:0;transition:opacity .4s ease;margin-left:-1px;margin-right:-1px}.corner-up{width:40px;height:92px;border-top:12px solid #94a3b8;border-left:12px solid #94a3b8;margin-top:40px;flex-shrink:0;opacity:0;transition:opacity .4s ease;margin-left:-1px;margin-right:-1px}.corner-down.revealed,.corner-up.revealed{opacity:1}.hl-topic,.hl-subject{color:#0ea5e9;font-weight:800}.hl-condition{color:#10b981;font-weight:800}.segment-arrow,.segment-arrow.revealed{display:none!important}.segment-arrow.is-embedded{margin-top:120px}.toggle-group{display:flex;flex-direction:column;justify-content:flex-end;height:52px;opacity:0;margin-top:0;transition:all .5s ease;width:80px;z-index:10;border:none!important;background:transparent!important;margin-left:-1px;margin-right:-1px}.toggle-group.is-embedded{margin-top:80px}.toggle-group.revealed{opacity:1}.toggle-group *{border:none!important;background:transparent!important}.toggle-group .switch-pill{background:#10b981!important}.toggle-group .switch-circle{background:#fff!important}.toggle-wrapper{display:flex;align-items:center;justify-content:center;flex:1;margin-bottom:5px}.dashed-arrow-line{width:100%;height:12px;background:#94a3b8!important;color:transparent;font-size:0;margin-top:0;position:relative;flex-shrink:0}.toggle-group.active{opacity:1;transform:translateY(0)}.toggle-wrapper{display:flex;align-items:center;margin:0}.toggle-wrapper.active{opacity:1;transform:scale(1)}.switch-pill{width:44px;height:24px;background:#10b981;border-radius:100px;position:relative;box-shadow:none}.switch-circle{width:18px;height:18px;background:#fff;border-radius:50%;position:absolute;right:3px;top:3px;transition:all .3s ease}.controls{display:flex;justify-content:center;gap:16px;margin-top:24px}.premium-unit-card{background:#fff!important;color:#333!important;padding:0!important;overflow:hidden;border:4px solid #f1f5f9;max-width:600px;margin:40px auto;border-radius:24px;box-shadow:0 25px 50px -12px #0006}.card-top-banner{background:linear-gradient(to right,#f43f5e,#fb7185);padding:24px;text-align:center;border-bottom:4px solid rgba(0,0,0,.05)}.top-title{color:#fff;font-size:2rem;font-weight:900;text-shadow:2px 2px 4px rgba(0,0,0,.2);letter-spacing:-1px}.card-body{padding:32px;display:flex;flex-direction:column;gap:24px}.info-row{display:flex;align-items:center;gap:20px;padding:16px;border-radius:16px;background:#f8fafc;border:2px solid #e2e8f0}.icon-label{display:flex;align-items:center;gap:8px;padding:8px 16px;border-radius:10px;color:#fff;font-weight:800;min-width:110px;justify-content:center}.icon-label.green{background:#10b981}.icon-label.blue{background:#3b82f6}.badge-icon{font-size:1.3rem}.info-content{flex:1;font-size:1.4rem;font-weight:700;color:#1e293b}.content-text-main{border-bottom:2px dashed #cbd5e1;padding-bottom:2px}.card-footer{padding:24px;background:#f1f5f9;display:flex;justify-content:flex-end}#reset-btn{padding:12px 24px;border:2px solid #cbd5e1;color:#64748b;font-weight:800;background:#fff;border-radius:12px;cursor:pointer;transition:all .2s}#reset-btn:hover{background:#e2e8f0;transform:translateY(-2px)}@media(max-width:600px){.info-row{flex-direction:column;align-items:flex-start;gap:12px}.top-title{font-size:1.5rem}}.diagnosis-badge-container{position:fixed;top:100px;right:20px;display:flex;flex-direction:column;gap:15px;z-index:9999;max-width:320px;pointer-events:none}.diagnosis-badge{pointer-events:auto;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;padding:16px;box-shadow:0 10px 30px #0000001f;border:1px solid rgba(255,255,255,.3);border-left:6px solid #3b82f6;animation:slideIn .5s cubic-bezier(.16,1,.3,1) forwards;transition:all .3s ease;position:relative}.diagnosis-badge.level-high{border-left-color:#ef4444}.diagnosis-badge.level-medium{border-left-color:#f59e0b}.diagnosis-badge.level-low{border-left-color:#3b82f6}.badge-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.badge-title{font-weight:800;font-size:.95rem;display:flex;align-items:center;gap:8px}.level-high .badge-title{color:#dc2626}.level-medium .badge-title{color:#d97706}.level-low .badge-title{color:#2563eb}.badge-close{background:none;border:none;font-size:1.2rem;color:#94a3b8;cursor:pointer;line-height:1;padding:4px;transition:color .2s}.badge-close:hover{color:#475569}.badge-msg{color:#475569;font-size:.85rem;line-height:1.5;font-weight:500}.diagnosis-badge:hover{transform:translate(-5px) scale(1.02);box-shadow:0 15px 40px #0000002e}@keyframes slideIn{0%{opacity:0;transform:translate(50px)}to{opacity:1;transform:translate(0)}}@media(max-width:600px){.diagnosis-badge-container{top:auto;bottom:20px;right:10px;left:10px;max-width:none}}.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)}}