:root{--brand-blue: #0066cc;--brand-light-blue: #e6f0ff;--brand-gold: #d4af37;--bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);--card-bg: rgba(255, 255, 255, .9);--glass-bg: rgba(255, 255, 255, .7);--text-dark: #2d3436;--text-muted: #636e72;--success: #00b894;--warning: #fdcb6e;--danger: #d63031;--shadow: 0 8px 32px 0 rgba(31, 38, 135, .15);--radius: 16px}*{box-sizing:border-box;margin:0;padding:0;font-family:Outfit,Inter,system-ui,-apple-system,sans-serif}body{background:var(--bg-gradient);min-height:100vh;display:flex;justify-content:center;align-items:center;color:var(--text-dark);margin:0;padding:0;overflow:hidden}.app-container{width:100%;max-width:450px;height:100vh;background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.18);display:flex;flex-direction:column;position:relative;overflow:hidden;margin:0 auto}@media(min-height:700px){.app-container{height:92vh;border-radius:30px;box-shadow:var(--shadow)}}.header{padding:20px;background:#fff;text-align:center;border-bottom:1px solid rgba(0,0,0,.05);display:flex;flex-direction:column;align-items:center;gap:10px}.brand-logo{width:80px;height:80px;object-fit:contain;border-radius:50%;border:2px solid var(--brand-blue);background:#fff}.header h1{font-size:1.2rem;font-weight:800;color:var(--brand-blue);margin:0}.header p{font-size:.8rem;color:var(--text-muted)}.level-selector{display:flex;gap:12px;margin:10px 0;background:#f0f4f8;padding:4px;border-radius:25px}.level-btn{border:none;background:none;padding:6px 16px;font-weight:700;border-radius:20px;cursor:pointer;color:var(--text-muted);transition:all .3s}.level-btn.active{background:var(--brand-blue);color:#fff;box-shadow:0 2px 8px #06c3}.exam-selector{display:flex;gap:8px;margin-bottom:5px}.exam-btn{border:1px solid #ddd;background:#fff;padding:4px 12px;font-size:.75rem;font-weight:600;border-radius:15px;cursor:pointer;color:var(--text-muted);transition:all .2s}.exam-btn.active{background:var(--brand-gold);color:#fff;border-color:var(--brand-gold)}.task-nav-pills{display:flex;gap:8px;overflow-x:auto;width:100%;padding:10px 0;justify-content:center;scrollbar-width:none}.task-nav-pills::-webkit-scrollbar{display:none}.pill{min-width:36px;height:36px;border-radius:50%;border:2px solid #eee;background:#fff;cursor:pointer;font-weight:600;color:var(--text-muted);transition:all .3s cubic-bezier(.4,0,.2,1)}.pill.active{background:var(--brand-blue);color:#fff;border-color:var(--brand-blue);transform:scale(1.1);box-shadow:0 4px 12px #0066cc4d}.main-content{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:16px;background:#fdfdfd}.task-card{flex-shrink:0;background:#fff;padding:16px;border-radius:var(--radius);box-shadow:0 4px 15px #00000008;position:relative;border-left:6px solid var(--brand-blue)}.category-tag{font-size:.75rem;color:var(--text-muted);font-weight:600;margin-bottom:4px}.task-card h2{font-size:1.1rem;margin-bottom:12px}.task-scenario{font-size:.95rem;line-height:1.5;color:#444;margin-bottom:16px;padding:12px;background:#f8faff;border-radius:12px}.points-box{background:#fff}.points-label{font-size:.85rem;font-weight:700;color:var(--brand-blue);margin-bottom:8px}.points-box ul{list-style:none}.points-box li{font-size:.9rem;margin-bottom:6px;padding-left:20px;position:relative}.points-box li:before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:700}.editor-container{flex-shrink:0;display:flex;flex-direction:column;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 4px 15px #00000008;border:2px solid #eee;transition:all .3s;min-height:240px}.editor-container:focus-within{border-color:var(--brand-blue);box-shadow:0 0 0 4px #0066cc1a}.text-editor{width:100%;min-height:180px;padding:16px;border:none;font-size:1.05rem;line-height:1.6;resize:none;outline:none}.editor-footer{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#f8f9fa;border-top:1px solid #eee}.word-counter{font-size:.8rem;font-weight:600}.word-counter.insufficient{color:var(--text-muted)}.word-counter.perfect{color:var(--success);font-weight:800}.word-counter.too-many{color:var(--danger)}.level-badge{background:var(--text-dark);color:#fff;padding:2px 8px;border-radius:4px;font-size:.7rem;font-weight:700}.action-bar{display:grid;grid-template-columns:1fr 2fr 1fr;gap:12px;margin-top:auto;padding-bottom:20px}.primary-btn{background:var(--brand-blue);color:#fff;border:none;padding:14px;border-radius:30px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s;box-shadow:0 4px 15px #0066cc4d}.primary-btn:disabled{background:#ccc;box-shadow:none;cursor:not-allowed}.secondary-btn{background:#fff;color:var(--brand-blue);border:1px solid var(--brand-blue);border-radius:30px;font-size:.85rem;font-weight:600;cursor:pointer}.secondary-btn:disabled{opacity:.3;cursor:not-allowed}.result-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:flex;justify-content:center;align-items:flex-end}.result-modal{width:100%;background:#fff;border-radius:32px 32px 0 0;padding:32px 24px;max-height:85%;overflow-y:auto;animation:slideIn .4s cubic-bezier(.16,1,.3,1);box-shadow:0 -10px 40px #0003}@keyframes slideIn{0%{transform:translateY(100%)}to{transform:translateY(0)}}.close-btn{position:absolute;top:20px;right:20px;background:#f0f0f0;border:none;width:32px;height:32px;border-radius:50%;font-size:20px;cursor:pointer}.score-header{text-align:center;margin-bottom:24px}.score-ring{width:80px;height:80px;border-radius:50%;border:6px solid var(--brand-blue);display:flex;flex-direction:column;justify-content:center;align-items:center;margin:0 auto 12px}.score-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.score-item{background:#f8f9fa;padding:4px 8px;border-radius:8px;font-size:.75rem;display:flex;justify-content:space-between}.score-item span{color:var(--text-muted)}.score-item strong{color:var(--brand-blue)}.score-value{font-size:1.8rem;font-weight:800;color:var(--brand-blue)}.score-total{font-size:.7rem;color:var(--text-muted);margin-top:-4px}.feedback-section,.correction-section,.model-section{margin-bottom:24px}h4{font-size:.9rem;color:var(--brand-blue);margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.feedback-section p{font-size:.95rem;line-height:1.6;padding:12px;background:#f0f7ff;border-radius:12px;font-style:italic}.correction-item{padding:12px;border-bottom:1px solid #eee}.error{color:var(--danger);text-decoration:line-through;margin-right:8px}.correct{color:var(--success);font-weight:700}.reason{display:block;font-size:.8rem;color:var(--text-muted);margin-top:4px}.model-text{padding:16px;background:#fff9e6;border-radius:12px;font-size:.95rem;line-height:1.6;border:1px dashed var(--brand-gold)}.history-float-btn{position:absolute;top:20px;right:15px;background:#fff;border:1px solid #eee;padding:6px 12px;border-radius:20px;font-size:.7rem;font-weight:700;color:var(--brand-blue);cursor:pointer;box-shadow:0 4px 10px #0000000d;z-index:10}.history-item{background:#f8faff;padding:12px;border-radius:12px;margin-bottom:12px;border-left:4px solid var(--brand-blue);transition:all .2s}.history-item:hover{transform:translate(5px);background:#f0f7ff;box-shadow:4px 4px 15px #0000000d}.history-item-header{display:flex;justify-content:space-between;font-size:.75rem;margin-bottom:8px;color:var(--text-muted)}.history-item-content{font-size:.85rem;color:var(--text-dark)}.history-badge{background:var(--brand-blue);color:#fff;padding:2px 6px;border-radius:4px;font-weight:700}.copy-btn{background:var(--brand-blue);color:#fff;border:none;padding:4px 10px;border-radius:6px;font-size:.7rem;cursor:pointer;transition:opacity .2s}.copy-btn:hover{opacity:.8}