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60px;border-radius:24px}.stat-item{display:flex;flex-direction:column;gap:4px}.stat-val{font-size:2.4rem;font-weight:800;color:var(--text-main)}.stat-tag{font-size:.8rem;font-weight:700;color:var(--text-muted);text-transform:uppercase}.animate-slideUp{animation:slideUp .6s ease forwards}.animate-fadeIn{animation:fadeIn .8s ease forwards}.animate-bounceIn{animation:bounceIn .8s cubic-bezier(.68,-.55,.265,1.55) forwards}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes bounceIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}@media(max-width:1024px){.exam-container{grid-template-columns:240px 1fr}.setup-pane{padding:40px}}@media(max-width:860px){.exam-container{grid-template-columns:1fr}.exam-sidebar{position:static;width:100%;flex-direction:row;justify-content:space-between;align-items:center;padding:20px 30px}.options-grid{grid-template-columns:1fr}.back-link{left:20px;top:20px}}@media(max-width:480px){.setup-header h1{font-size:1.8rem}.q-content{font-size:1.3rem}.stats-box{flex-direction:column;gap:20px;padding:30px}}:root{--primary: #2dd528;--primary-dark: #15de29;--bg-page: #ffffff;--text-main: #2D3436;--text-muted: #636E72;--white: #FFFFFF;--shadow-md: 0 12px 30px rgba(0, 0, 0, .08);--transition: all .3s cubic-bezier(.165, .84, .44, 1)}.forum-wrapper{min-height:100vh;background:var(--bg-page);color:var(--text-main);font-family:Inter,sans-serif;overflow-x:hidden;padding-bottom:80px}.forum-blob{position:absolute;width:600px;height:600px;background:var(--primary);opacity:.04;border-radius:50%;filter:blur(100px);pointer-events:none}.forum-header{padding:40px 5% 60px;max-width:1280px;margin:0 auto}.forum-intro h1{font-size:3.5rem;font-weight:800;margin-bottom:16px}.forum-intro .highlight{color:var(--primary)}.forum-grid{display:grid;grid-template-columns:400px 1fr;gap:40px;max-width:1280px;margin:0 auto;padding:0 5%}.forum-badge{margin-bottom:16px;display:inline-block;background:var(--primary);color:#fff;padding:4px 12px;border-radius:12px;font-size:.75rem;font-weight:600}.form-card{background:#fff;padding:40px;border-radius:32px;box-shadow:var(--shadow-md);border:1px solid rgba(0,0,0,.03)}.input-group{display:flex;align-items:center;background:#f8faf8;border:1.5px solid #f0f3f0;border-radius:16px;padding:0 16px;margin-bottom:16px}.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:600;margin-bottom:24px;text-decoration:none;margin-left:0}.btn-submit{width:100%;display:flex;align-items:center;justify-content:center;gap:12px;background:var(--primary);color:#fff;border:none;padding:16px;border-radius:14px;font-weight:700;cursor:pointer;transition:var(--transition);box-shadow:#2dd52833}.query-card-v2{background:#fff;padding:24px;border-radius:24px;display:flex;gap:20px;border:1px solid #f0f0f0;transition:var(--transition);margin-bottom:20px}.query-card-v2:hover{transform:translate(10px);border-color:var(--primary)}.user-avatar{width:48px;height:48px;background:#f1fbf1;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--primary-dark)}:root{--primary: #2dd528;--primary-dark: #15de29;--bg-page: #f9fbf9;--text-main: #2D3436;--text-muted: #636E72;--shadow-md: 0 12px 30px rgba(0, 0, 0, .08)}.contact-wrapper{min-height:100vh;background:var(--bg-page);color:var(--text-main);font-family:Inter,sans-serif;overflow-x:hidden;padding-bottom:80px}.contact-blob{position:absolute;width:600px;height:600px;background:var(--primary);opacity:.04;border-radius:50%;filter:blur(100px);pointer-events:none}.blob-1{top:-100px;right:-100px}.contact-header{padding:40px 5% 60px;max-width:1280px;margin:0 auto}.contact-intro h1{font-size:3.5rem;font-weight:800;margin-bottom:16px}.contact-intro .highlight{color:var(--primary)}.contact-grid{display:grid;grid-template-columns:320px 1fr;gap:40px;max-width:1280px;margin:0 auto;padding:0 5%}.info-card,.form-card{background:#fff;padding:40px;border-radius:32px;box-shadow:var(--shadow-md);border:1px solid rgba(0,0,0,.03)}.info-text span{font-weight:600;color:var(--primary)}.input-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.input-group{display:flex;align-items:center;background:#f8faf8;border:1.5px solid #f0f3f0;border-radius:16px;padding:0 16px;transition:.3s}.input-group:focus-within{border-color:var(--primary);background:#fff}.input-group input,.input-group textarea{width:100%;border:none;background:transparent;padding:16px 12px;font-size:.95rem;outline:none}.btn-submit{width:100%;display:flex;align-items:center;justify-content:center;gap:12px;background:var(--primary);color:#fff;border:none;padding:16px;border-radius:14px;font-weight:700;cursor:pointer;transition:.3s;box-shadow:0 10px 20px #2dd52833}.btn-submit:hover{transform:translateY(-3px);background:var(--primary-dark)}.submission-card-v2{background:#fff;padding:24px;border-radius:24px;display:flex;gap:20px;border:1px solid #f0f0f0;transition:.3s;margin-top:16px}.sub-avatar{width:44px;height:44px;background:#f1fbf1;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--primary-dark)}:root{--primary: #2dd528;--primary-dark: #15de29;--bg-page: #f9fbf9;--text-main: #2D3436;--text-muted: #636E72;--white: #FFFFFF;--shadow-card: 0 4px 20px rgba(0, 0, 0, .04);--shadow-hover: 0 12px 30px rgba(45, 213, 40, .1);--transition: all .3s cubic-bezier(.165, .84, .44, 1)}.pre-exercise-page{min-height:100vh;background:var(--bg-page);color:var(--text-main);font-family:Inter,Poppins,sans-serif;padding-top:30px}.page-header{padding:24px 5%;display:flex;justify-content:space-between;align-items:center}.back-link{display:flex;align-items:center;gap:8px;background:none;border:none;color:var(--text-muted);font-weight:600;cursor:pointer;padding:10px 16px;border-radius:100px;transition:var(--transition);margin-top:50px;margin-bottom:-50px}.back-link:hover{color:var(--primary);background:#2dd52814}.topic-indicator{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--text-muted);background:#fff;padding:8px 16px;border-radius:100px;box-shadow:var(--shadow-card)}.topic-indicator .dot{width:8px;height:8px;background:var(--primary);border-radius:50%;box-shadow:0 0 8px var(--primary)}.header-actions{display:flex;align-items:center;gap:16px}.btn-ai-header{display:flex;align-items:center;gap:8px;background:#2dd5281a;color:var(--primary);border:1px solid rgba(45,213,40,.2);padding:8px 16px;border-radius:20px;font-weight:600;cursor:pointer;transition:var(--transition)}.btn-ai-header:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-1px)}.hub-container{max-width:900px;margin:0 auto;padding:40px 5%}.hub-header{text-align:center;margin-bottom:60px}.hub-badge{display:inline-block;padding:6px 14px;background:#2dd5281a;color:var(--primary-dark);border-radius:100px;font-weight:700;font-size:.7rem;text-transform:uppercase;margin-bottom:16px}.hub-header h1{font-size:3rem;font-weight:800}.hub-header .highlight{color:var(--primary)}.topic-cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.topic-card-v2{background:#fff;padding:24px;border-radius:20px;display:flex;align-items:center;gap:16px;cursor:pointer;border:1px solid rgba(0,0,0,.03);box-shadow:var(--shadow-card);transition:var(--transition)}.topic-card-v2:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-color:#2dd52833}.topic-icon-ring{width:50px;height:50px;background:#2dd5280d;border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--primary);transition:var(--transition)}.topic-card-v2:hover .topic-icon-ring{background:var(--primary);color:#fff}.topic-info h3{margin:0;font-size:1.2rem;font-weight:700;color:var(--text-main)}.topic-info p{margin:4px 0 0;font-size:.85rem;color:var(--text-muted)}.topic-arrow{color:var(--text-muted);transition:var(--transition)}.topic-card-v2:hover .topic-arrow{color:var(--primary)}.chapter-view{display:flex;max-width:1200px;margin:40px auto;padding:0 5%;gap:40px}.pdf-sidebar{flex:0 0 300px;background:#fff;border-radius:20px;padding:24px;box-shadow:var(--shadow-card);border:1px solid rgba(0,0,0,.03)}.pdf-sidebar h2{margin:0 0 20px;font-size:1.5rem;font-weight:700;color:var(--text-main)}.pdf-list{display:flex;flex-direction:column;gap:12px}.pdf-link{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#2dd5280d;border-radius:12px;text-decoration:none;color:var(--text-main);transition:var(--transition);border:1px solid transparent}.pdf-link:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-hover)}.pdf-link span{font-weight:500}.content-area{flex:1;background:#fff;border-radius:20px;padding:40px;box-shadow:var(--shadow-card);border:1px solid rgba(0,0,0,.03)}.content-area h1{margin:0 0 20px;font-size:2.5rem;font-weight:800;color:var(--text-main)}.content-area p{font-size:1.1rem;color:var(--text-muted);line-height:1.6}